Method for regulation of steam installation in home appliance

FIELD: engineering.

SUBSTANCE: the invention relates to method of regulation of steam installation in home appliances, where the steam installation produces water steam, in particular, hot steam of overheated steam. Water steam is fed to the processing section, specifically, to the drum. The said steam installation comprises at least one steam generator with heating element and water feeding means. The steam generator temperature is measured, specifically, the surface temperature and/or the heating element temperature, and in normal operating mode the heating element of water feeding means are regulated in such a manner so the measure temperature is kept within the given lower and upper limits. The normal operation mode comprises the first stage and the second stage, furthermore, in the first stage which begins after reaching the given lower temperature limit until reaching the given upper temperature limit the heating element is active and the water feeding means feed the water with the given volume flow, which is the fixed second volume flow or the volume flow which is changed accoring to the measured temperature in the given second dependence. In the second phase of normal operating mode which which begins after reaching the given upper temperature limit until reaching the given lower temperature limit the heating element is deactivated or its heat reduced in comparison with the first phase, and the water feeding means feed the water with the given third volume flow or the volume flow which is changed in accordance with the measured temperature in the third dependence. The second phase duration is measured, compared with the given duration value, and if the measured value differs from the given value more than the given difference value, the troubleshooting service begins.

EFFECT: guaranteed constant steam temperature and/or steam constant volume flow, which prevents spotting and textile products damage.

25 cl, 6 dwg

 

The invention relates to a method of regulating the steam installation in a household device, in particular in the drying machine for textiles or in the washing machine.

Household appliances are well known in the art. Thanks to them, as you know, are washing and drying textiles. Usually in the drying machines are used or condensation process, or the process of displacement of moisture in the air.

Found that the quality of processing of textile products can be improved by the use of steam, which is used for textiles in the domestic device. It applies, in particular, in the washing and drying machines. Thanks to it can be removed unwanted odors. Also can be made favorable treatment of textiles with steam. With this purpose, water vapor, particularly in hot or superheated steam, is fed into the processing area, which is usually the drum containing textiles. To do this in a washing machine or a drying machine, you must have a steam installation for steam generation.

Usually steam the installation is located inside a household product. Steam system contains at least the steam generator. To generate steam for the steam generator water is required. Typically, this water is supplied from a water tank through which the your pump, therefore, this pump is usually a component of the steam unit. By means of the pump can be adjusted volumetric flow rate of water in the steam generator. Undoubtedly, there are various ways of regulating the volumetric flow of water, for example by means of adjustable valves.

Inside the steam generator feedwater is evaporated to produce steam. The steam generated by the steam generator, is usually served through the steam pipe to the outlet nozzle in the processing area of the household device.

In document WO 2006/067756 described a device for generating steam containing a boiler fitted with electrical heating means and means for regulating current to control the current in the heating means; the device also includes at least one temperature sensor and pressure sensor. The device can generate pairs with different performance; however, when a relatively small performance regulatory tool has the ability to regulate the current in the heating means based on a signal from a temperature sensor, and at a relatively high performance regulatory tool has the ability to regulate the current in the heating means based on the pressure.

In document WO 01/75360 described household device for generating steam containing reservoir in the s at atmospheric pressure; a boiler designed to accommodate subject to evaporation of water and containing a heating unit comprising a heat source for evaporation of water, at least partially submerged in water and having a raised portion which protrudes along a predetermined direction, and a temperature sensor located in a protective shell, while the protective sheath is in contact with the heat source, means for supplying water from the tank to the boiler for delivery of steam from the boiler in using steam device, while the contact area between the protective sheath and a raised part runs along the given direction so that the contact area is quite wide.

In document EP 1659205 described the method of controlling a washing machine containing a steam generator having a temperature sensor and a control unit for supplying water into the steam generator to generate steam. The method includes the step of determining the temperature of the steam generator and the water supply to the steam generator when the set temperature is reached.

Lack of work of the steam generators is that pairs produced usually contains some amount of water droplets. In the processing of textiles ferry these drops are in contact with textiles and can lead to the formation of undesirable spots.

Another problem with the her is that produced steam generator steam usually has variable properties, such as temperature and volume flow. This can cause damage to delicate textiles.

Another problem is that the planned steam processing of textile products may not continue for reasons connected with defects in the steam system, such as a leaking pipe in the water supply system. This can damage textiles and/or household device.

The present invention is to develop a method of regulating the steam installation in a household device, in particular in household drying or washing machine, which would eliminate the aforementioned problems. In particular, the preferred method, which leads to improved steam production, steam generator, in particular, the method, which produces a vapor that does not contain water droplets, or at least containing a small amount of drops and having almost constant properties, such as temperature and/or volume flow. In addition, a particularly desirable such a method, which can detect a malfunction in the steam system, such as inadequate or interrupted water supply, and to respond to these faults.

This problem is solved in the method according to claim 1 of the formula the invention. Preferred embodiments of the invention are mentioned in the dependent claims.

The invention relates to a method of regulating the steam installation in a household device. Specified steam system produces water vapor, particularly in hot or superheated steam, which is fed into the processing area, in particular in the drum. Steam plant comprises at least one steam generator with a heating element and means of water supply for supplying water to the steam generator. The method is characterized by the fact that the measured temperature of the steam generator, in particular the surface temperature of the steam generator and/or the temperature of the heating element of the steam generator, and/or the temperature of the water vapor, and when the normal mode is the heating element of the steam generator and/or water supply facilities are regulated so that the measured temperature was maintained between specified lower and upper temperature limits.

This way, you receive the possibility of generation of steam, not containing drops of water or containing a small number of them. This method ensures a constant temperature of steam and/or about his constant volume flow. In the drops of water there are no or very little contact with obrabatyvaimym textiles. Accordingly, there are no unwanted stains, caused by drops of water, or, at least, there are only a small number of them.

Thanks to the invention becomes possible to control the heating element of the steam generator and/or the means of its water supply so that the measured temperature ranged between specified lower and upper temperature limits.

Furthermore, the method can include the operation start. During this operation, run the heating element of the steam generator and/or water supply facilities are regulated so that the measured temperature has reached the temperature range between predetermined lower and upper temperature limits. For operation run normal operating mode.

Preferably, when the operation start in its first phase, which continues until it reaches the preset first temperature, the heating element of the steam generator and means of water supply is turned off, and in the second phase, which begins when the pre-set first temperature, the heating element of the steam generator remains enabled, and the means of water supply to supply water to the steam generator with the given volumetric flow rate, which is fixed to the first volumetric flow rate or volumetric flow rate, which changes in accordance with amendments the adopted temperature specified in the first dependency.

Favourable is the fact that in the proposed method when the normal mode in the first phase, which begins when the preset lower temperature limit and continues until it reaches the specified upper temperature, the heating element of the steam generator is enabled and means of water supply to supply water to the steam generator with the given volumetric flow rate, which is fixed to the second volumetric flow rate or volumetric flow rate, which varies in accordance with the measured temperature at a given second dependency. In addition, when the normal mode in the second phase, which starts when the specified upper temperature and is continued until the desired lower temperature, the heating element of the steam generator is switched off, or the heating is reduced compared with the first phase of the normal operating mode, and means of water supply to supply water to the steam generator with the given volumetric flow rate, which is fixed to the third volumetric flow rate or volumetric flow rate, which varies in accordance with the measured temperature at a given third dependencies.

From the final temperature operation start depends on what phase starts normal operating mode, with the first or with the second. If the operation start ends when Saginomiya temperature limit, normal operation begins with the first phase, as described above. If the operation is run ends when a predetermined upper temperature limit, normal operation begins with the above-described second phase.

Preferably fixed to the second volumetric flow rate of water equal to the third volumetric water flow rate, and/or set the second dependency and specified third dependence of equivalent or equal. Also fixed the first volumetric flow rate of water may be equal to the fixed second and third volumetric water flow rate, and/or set the first dependency, given as the second dependency and specified third dependence of equivalent or equal to, and/or set the first dependency, given as the second dependency and specified third dependence are part of a coherent underlying dependencies between the measured temperature and volumetric flow.

Preferably the rate of flow depends only on the measured temperature and does not depend on active operations or phases.

Undoubtedly, the dependencies must be adapted to the used thermodynamic system.

Preferably, the volumetric flow rate is low when measured low temperatures and high when measured high temperatures.

Favored that set the first dependency, and/or set the second dependent is th and/or third set dependence, and/or fundamental dependence is or are directly proportional dependency between the measured temperature and volumetric flow.

Ultimately, the result of the above-mentioned method is the low tendency to form developed in couple of drops of water, even if the steam generator operates at low temperatures, for example near or at the lower temperature limit. In addition, adequate relationship between volumetric flow rate and the measured temperature leads to low frequency on-off of the heating element of the steam generator, particularly for adequate regulation of the volume flow of water to reach the upper or lower temperature limits. The result is a high quality pair produced, for example, constant properties.

In a preferred embodiment of the invention a preset lower temperature limit is in the range from 115C to 140C, preferably from 120C to 135C, and most preferably at about 130C, as specified upper temperature limit is in the range from 140C to 170C, preferably from 145C to 160C, and most preferably is about 150C.

Favourable is the fact that the said first temperature equal to or higher than 100C, and pre is respectfully is in the range from 100C to 130C, even more preferably in the range from 100C to 115C.

The proposed method mainly includes the following steps:

a) measuring the duration of the second phase of the normal operating mode;

b) comparison of the measured duration with the specified duration value;

C) start of operation Troubleshooting if the measured duration of the phase deviates from the set value of the length more than the specified tolerance value.

Alternative or additionally, the method can include the following steps:

a) measuring frequency of the temperature cycle during the normal operating mode and/or frequency of on-off of the heating element of the steam generator when the normal mode;

b) comparison of the measured frequency with a predetermined frequency value;

C) start of operation Troubleshooting if the measured frequency deviates from the setpoint frequency is greater than the preset deviation value.

Both the above variants of the invention can detect a malfunction in the steam system, such as inadequate or interrupted water supply, and to respond to these faults. For example, the alarm and/or message can be delivered to the user and/or service instances shall be. In addition, adequate response can help prevent damage to the components of device-related malfunctions.

Mentioned operation Troubleshooting may contain at least one of the following procedures:

(a) the filing of a warning signal, in particular display a visual warning signal and/or a loud acoustic warning signal, and/or

b) stop or interrupt an active workflow home appliance, and/or

C) turning on the water supply of the water reservoir, which is located in a residential unit or on it, to get water for steam machines, mainly the opening of the valve, in particular a magnetic valve installed to open and close the water supply tank, and/or

g) commissioning spare capacity, located in a residential unit or to maintain steam installation water.

Means of water supply for supplying water to the steam generator can be a pump or contain the pump. The volume flow pumped water can be adjusted by adjusting the operating frequency of the pump and/or pump.

Alternative or additionally, the means of water supply can be a valve or contain clap the us, installed with the ability to regulate the volumetric flow of water.

In the proposed method, the regulation can be carried out at least one electronic control device located in a residential unit or on it. This is an electronic regulating device can be combined with electronic regulating device, home appliance and/or may be connected to an electronic control apparatus household appliances.

Referred to home appliance can be a drying machine for textiles, in particular tumble dryer condensing type. The proposed method is also suitable for washing machines, in particular for household washing machines.

Undoubtedly, all the above parameters can be saved and later can be displayed on at least one of the electronic control devices, e.g. for maintenance.

Below is a detailed description of the preferred embodiments of the invention with reference to the drawings.

Figure 1 schematically shows a household tumble dryer with steam plant, which can be adjusted by the method according to the invention (shown for illustration)front view;

figure 2 schematically shows a steam installation, situated inside the drying machine shown is figure 1, view from above;

figure 3 is another example of the complete household drying machines with a steam plant, which can be adjusted by the method according to the invention;

figure 4 is an enlarged portion of figure 3, showing the steam module installation;

figure 5 - diagram of the time-temperature during the normal operation of the steam unit in a household device, for example in a drying machine, which is shown in figure 1-4;

figure 6 - chart time-temperature on the basis of figure 5 and the comparison is consistent with the work of the fault in the steam installation in a household device, for example in a drying machine, which is shown in figure 1-4.

Shown in figure 1 home appliance 1 is a household tumble dryer for drying textiles, in which the drying of textiles is well known manner. Textile products (not shown) placed in the drum 3, which is usually the treatment area. The drum 3 is closed by the door 20. In this case, the drying machine 1 is a tumble dryer condensing type, i.e. it has a condensing tank 16, which is going to be extracted from the wet textiles water.

To improve the treatment of textile products in the drying machine 1 executes the processing steam. Pairs, i.e. hot or superheated steam, submit the I to textiles in the drum 3 drying machine 1. With this purpose in a drying machine 1 is modular steam unit 2 to generate steam. Water tank 6 for supplying steam installation water is located in the side part 13 of the drying machine 1, in its upper part 14 near the side panel 17 and between the side panel 17 and the condensing tank 16. Condensing tank 16 is part of the drawer (not shown), which can be removed from the drying machine 1 for emptying the tank. The front panel 21 of this box is visible in figure 1. In addition, this front panel 21 at least partially covers the water reservoir 6.

Steam unit 2 is designed as a compact modular unit, so it can be inserted into the drying machine 1 or extracted from it.

As shown in figure 1, steam unit 2 located on the left side, i.e. in the side 13 of the drying machine, in the lower part 15, in particular, between the drum 3 and the side panel 17 of the drying machine 1. Also you can put steam installation 2 in the upper part 14 of the home appliance 1.

Details of the steam unit 2 shown in figure 2. Steam unit 2 contains various components: the steam generator 4 with a heating element which is supplied with water from the water reservoir 6 via a pump 5, which is located inside the steam unit 2. The steam generator 4 and the pump 5 is fixed yoporno plate 11, inserted into the receiving means 12, installed in the drying machine 1 and are shown schematically. These receiving means 12 adapted to openings 22 in the base plate 11. Base plate 11 is mounted on the receiving means 12 by means of vertical motion and recorded additional horizontal movement, whereby a horizontal recess (not shown) in the receiving means 12 is included in a corresponding recess 23 in the base plate 11.

Alternatively, it may be used a variety of tools for rapid separation, which ensure a reliable installation in a domestic unit 1 base plate 11 carrying the various parts of the steam unit 2.

In addition, a water tank 6 can be installed as an additional part of the modular steam unit 2 (not shown), for example when placing it over the steam generator 4 and/or the pump 5.

Produced by the steam generator 4 steam is supplied through the steam pipe 18 to the outlet nozzle 19 and the drum 3.

Moreover, although it is shown only schematically, the steam unit 2 also has a safety device 7 and an electronic regulating device 8. In addition, there is a device 9 electrical connection with the control apparatus 10 of the drying machine 1 (Fig 1). One piece 9' device 9 mounted on the base plate 11, and others who Gaya part 9" of the device 9 may be connected to the consumer device 1. When inserting the support plate 11 in the home appliance 1 and moving it in a horizontal direction electric connection is achieved automatically, since the two parts 9' and 9" are in contact.

Alternatively, as the electrical connections you can use the plug type connector socket. In this case, the electrical connection between the steam setting and regulating device of the drying machine can be performed by connecting the plug with the socket.

Tank 6 provides storage and supply a clean and disinfected water for steam generation. As shown in figure 1, it has a small size to use free space between the condensing tank 16 and side panel 17.

On the base plate 11 can be fixed various components using multiple bolts, for example four, providing a secure mounting of the components on the base plate 11.

Figure 3 shows another example of performing household drying machine 1 according to the invention. The side panels are removed, allowing a good view of the location of the water reservoir 6 and the steam module installation 2 in the tumble dryer 1. Figure 4 shows in enlarged scale the arrangement of the steam unit 2, is shown in figure 3. You can see the steam generator 4, the pump 5, the support plate 11 and the reception of the s means 12, installed in the drying machine 1 for receiving the support plate 11.

Figure 5 is a diagram of the time-temperature and time pending on the X-axis and temperature on the y-axis Line 24 indicates the temperature measured on the surface of the steam generator 4 steam installation 2 home appliance 1. A similar curve was obtained by measuring the temperature of the heating element of the steam generator 4 or the temperature measurement of the water vapor.

On the specified graph shows the temperature change of the steam generator 4 at a time in the process. The work begins with operation run 26 of the steam unit 2, which is indicated on the chart starting point 25. During the operation run 26 of the heating element of the steam generator 4 and the pump 5 is regulated so that the measured temperature 24 has reached a predetermined lower temperature limit of 30. Subsequently, upon reaching normal operating mode 32, the curve 24 of the measured temperature varies between predetermined lower temperature limit of 30 and a specified upper temperature limit of 31.

Operation run 26 is divided into two phases, with the second phase 28 follows the first phase 27. The first phase 27 continues until the desired first temperature 29, which exceeds 100C. During the specified first phase 27 of the heating element of the steam generator 4 is enabled,and means 5 water supply is turned off. As a result, the steam generator is heated, and the chart there is a continuous increase of the measured temperature on line 24 during the first phase 27 of the startup operation 26. Because the supply of water to the steam generator is missing, during this first phase of the 27 pairs is not produced or is produced in small quantity.

With the achievement of the first temperature 29 the first phase 27 of the startup operation ends 26 and starts the second phase 28 of the startup operation 26. During the second phase 28 of the heating element of the steam generator 4 is still enabled, and means 5 water supply to supply water to the steam generator with the given volumetric flow rate. The specified set volume flow of water is fixed, the first volumetric flow of water. This first volume flow of water can be obtained by adjusting the pump 5 with a certain first frequency. Of course, there is the possibility of changing the volumetric flow of water in accordance with the measured temperature at a given first dependency. During the second phase 28 operations run 26 of the steam generator 4 is further heated, while there is a continuous increase of the measured temperature on line 24 during the second phase 28 of the startup operation 26. In addition, during the specified second phase 28 operations run 26 of the steam generator produces steam.

When the measured temperature (line 24) reached is no lower temperature limit of 30, the second phase 28 operations run 26 and the operation start end 26, and starts normal operating mode 32. During this normal operating mode 32 heating element of the steam generator 4 and means 5 water supply is regulated so that the measured temperature was maintained between predetermined lower temperature limit of 30 and a specified upper temperature limit of 31. Normal operating mode 32 consists of a first phase 33 and the second phase 34, which constantly alternate during normal operating mode 32.

Normal operating mode 32 begins at the end of the startup operation 26, when the measured temperature (line 24) reaches the lower temperature limit of 30. Normal operating mode 32 begins with the first phase 33. During this first phase 33 normal operating mode 32 heating element of the steam generator 4 is turned on and the pump 5 supplies water to the steam generator 4 with a given volumetric flow rate. This set volume flow of water is fixed, the second volumetric rate of water. The specified second volume flow of water can be obtained by adjusting the operation of the pump 5 with a certain second frequency. Of course, there is the possibility of changing the volumetric flow of water in accordance with the measured temperature at a given second dependency.

During the first phase 33 normal RA is Otsego mode 32 steam generator 4 is heated, thus there is an increase in measured temperature line 24 during the first phase 33 normal operating mode 32. In addition, during this first phase 33 normal operating mode 32 steam generator 4 generates steam.

The first phase 33 normal operating mode 32 is terminated when reaching the upper temperature limit of 31. At this time begins the second phase 34 of the normal operating mode 32.

During the specified second phase 34 of the normal operating mode 32 heating element of the steam generator 4 is switched off and the pump 5 supplies water with a given volumetric flow rate to the steam generator 4. This given volumetric flow rate is fixed to the third volumetric rate of water. Specified third volumetric flow rate of water can be obtained by adjusting the operation of the pump 5 with certain third frequency. Of course, there is the possibility of changing the volumetric flow of water in accordance with the measured temperature at a given third dependencies.

During the second phase 34 of the normal operating mode 32 steam generator 4 is cooled, while there is a decrease in the measured temperatures on line 24 during the second phase 34 of the normal operating mode 32. In addition, during the specified second phase 34 of the normal operating mode 32 steam generator 4 continues to produce pairs.

The second phase 34 of the normal operating mode is 32 continues until it reaches a preset lower temperature limit of 30. At this time, the next one begins the first phase 33 normal operating mode 32. When the upper temperature limit 31 again, in turn, begins following the second phase 34 of the normal operating mode 32

Due to the described method, throughout the normal operating mode 32 produces a vapor, and this vapor does not contain water droplets or, at least, contains a small number of them. In addition, the generated steam has approximately a constant temperature within the temperature range, which is limited to two temperature limits. Also remains approximately constant volume flow of steam.

Shown in figure 5 preset lower temperature limit is about 130C, the specified upper temperature limit is about 150C, and the first temperature is about 110C.

Alternatively, there is the possibility of continuing operations start to reach the upper temperature limit of 31. This means that the second phase of the operation start is longer, it ends when reaching no lower temperature limit is 30, and the upper temperature limit of 31. In the normal operating mode begins again at the end of the startup operation, and in this case the measured temperature reaches the upper temperature limit of 31. the consequence of this normal operating mode in this case starts from the second phase, as was described above. Specified the second phase ends when reach the lower temperature limit of 30. At this time, the first phase of the normal operating mode, as described above, starts and continues until it reaches the specified upper temperature limit of 31. Then the next one begins the second phase of the normal operating mode, etc.

Figure 6 shows another diagram of the time-temperature similar to that shown in figure 5. Line 24 measured temperature during the normal operation, corresponding to the diagram in figure 5 depicts continuous. Additionally, figure 6 by the dashed line depicts the corresponding line 35 indicating the measured temperature when the malfunction. Faults can be associated with a leak in the water system, with empty water tank, defective pump, etc. In this case, the volume flow of water in the steam generator 4 is lower than usual, and therefore the cooling of the steam generator, which mainly depends on the volumetric flow of water takes more time.

Figure 6 shows the differences in the duration of the second phase 34 of the normal operating mode 32. The duration of the second phase 34 during the normal operation is indicated by position 36, and the duration of the second phase 34 when the malfunction indicated by the position 37. The length 37 of the second phase when it is the malfunctions in the work is much greater than the length 36 of the second phase during the normal operation, therefore, when measuring the duration of the second phase 34 and comparing the measured values with the specified value or the specified range of values there is a possibility of detection of malfunctions of the steam install and start the operation for their removal.

Additionally, or alternatively, have the ability to measure or determine the frequency of oscillation of the measured temperature and comparing it with the specified value or the specified range of values. Also can be measured or determined by the switching frequency of the heating element of the steam generator and subsequently this frequency can be used for detection of malfunctions of and the start of the operation for their removal.

The reference list of items

1 home appliance20 Door
2 steam installation21 Front panel
3 the processing Area (drum)22 Hole
4 steam Generator23 Deepening
5 Tools water pump24, the Line showing the measured surface temperature of the steam generator trouble-free operation)
6 Water tank25 the Starting point
7 safety device26 Operation start
8 Electronic regulating device27 the First phase of the operation start 26
9, 9', 9" Device electrical connections28 the Second phase of the operation start 26
10 Regulating device29 First temperature
11, the base plate30 Lower temperature limit
12 Receiving funds31 Upper temperature limit
13 Side32 Normal operating mode
14 the Upper part33 the First phase of the normal operating mode 32
15 the lower part34 the Second phase of the normal operating mode 32
16 Condensing tank35 the Line showing the measured surface temperature of progeneral the RA (when Troubleshooting)
17 Sidebar36 Duration of the second phase 34 (trouble-free operation)
18 steam pipe37 Duration of the second phase 34 (when Troubleshooting)
19 outlet

1. The method of regulating the steam install (2) in a consumer device (1)including production using steam install (2) water vapor, particularly in hot or superheated steam, which is fed into the processing area, in particular, in the drum, and a steam installation (2) contains at least one steam generator (4) with a heating element and means of water supply (5) for supplying water to the steam generator (4), temperature (24, 35) of the steam generator (4), in particular the temperature of its surface, and/or temperature of the heating element of the steam generator (4), and/or temperature, water vapor, and when the normal operation mode (32) regulation of the heating element of the steam generator (4) and/or water supply facilities (5) so that the measured temperature (24, 35) was maintained between predetermined lower temperature limit of (30) and a specified upper temperature limit (31), while the normal mode of operation consists of first phase and second is phase, moreover, in the first phase (33) when the normal mode (32), beginning when the preset lower temperature limit (30) and continuing until it reaches the specified upper temperature limit (31), the heating element of the steam generator (4) is enabled, and the money supply (5) to supply water to the steam generator (4) with a given volumetric flow rate, which is fixed to the second volumetric flow rate or volumetric flow rate, which varies in accordance with the measured temperature (24, 35) in the specified according to the second, and the second phase (34) under normal the operating mode (32), beginning when the preset upper temperature limit (31), continuing to achieve the preset lower temperature limit (30), the heating element of the steam generator (4) is turned off or the heating is reduced compared with the first phase (33) normal operating mode (32), and means of water supply (5) to supply water to the steam generator (4) with a given volumetric flow rate, which is fixed to the third volumetric flow rate or volumetric flow rate, which varies in accordance with the measured temperature (24, 35) in a given third dependencies characterized in that the measured duration (36, 37) of the second phase (28) when the normal mode (26), comparing this measured length (36, 37) for the data value of the length, and if the measured duration (36, 37) deviates from the set value of the length is greater than the preset deviation value, start the operation Troubleshooting.

2. The method according to claim 1, characterized in that the heating element of the steam generator (4) and/or water supply facilities (5) is adjusted so that the measured temperature (24, 35) varies between predetermined lower temperature limit of (30) and a specified upper temperature limit (31).

3. The method according to claim 1, characterized in that when the operation start (26) the heating element of the steam generator (4) and/or water supply facilities (5) is adjusted so that the measured temperature (24, 35) reaches the value in the temperature range between the predetermined lower temperature limit of (30) and a specified upper temperature limit (31), in particular reaches a predetermined temperature lower temperature limit (30) or a specified upper temperature limit (31), and the operation of launch (26) follows the normal operating mode (32).

4. The method according to claim 2, characterized in that when the operation start (26) the heating element of the steam generator (4) and/or water supply facilities (5) is adjusted so that the measured temperature (24, 35) reaches the value in the temperature range between the predetermined lower temperature limit of (30) and a specified top the meters temperature limit of (31), in particular reaches a predetermined lower temperature limit (30) or a specified upper temperature limit (31), and the operation of launch (26) to be the normal mode (32).

5. The method according to claim 3, characterized in that in the first phase (27) operation start (26), continuing until the desired first temperature (29), the heating element of the steam generator (4) is enabled, and the money supply (5) is turned off, and during the second phase (28) operation start (26), beginning when the pre-set first temperature (29), the heating element of the steam generator (4) is enabled, and the money supply (5) to supply water to the steam generator (4) with a given volumetric flow rate, which is fixed to the first volume the water flow rate or volumetric flow rate, which varies in accordance with the measured temperature (24, 35) specified in the first dependency.

6. The method according to claim 4, characterized in that in the first phase (27) operation start (26), continuing until the desired first temperature (29), the heating element of the steam generator (4) is enabled, and the money supply (5) is turned off, and during the second phase (28) operation start (26), beginning when the pre-set first temperature (29), the heating element of the steam generator (4) is enabled, and the money supply (5) to supply water to the steam generator (4) with a given volumetric flow rate, which are the two which is fixed the first volumetric flow rate or volumetric flow rate, which varies in accordance with the measured temperature (24, 35) specified in the first dependency.

7. The method according to claim 1, characterized in that the fixed second volume flow of water equal to the third volumetric flow rate of water and/or second set dependence and specified third dependence of equivalent or equal.

8. The method according to any one of claims 1, 5-7, characterized in that the first fixed volume flow of water is equal to the fixed second and third volumes of water, and/or set the first dependency, given as the second dependency and specified third dependence of equivalent or equal to, and/or set the first dependency, given as the second dependency and specified third dependence are part of a coherent underlying dependencies between the measured temperature and volumetric flow.

9. The method according to claim 1, wherein the first set dependence, and/or set the second dependency, and/or third set dependence, and/or fundamental dependence is or are directly proportional dependency between the measured temperature and volumetric flow.

10. The method according to claim 7, characterized in that the first set dependence, and/or set the second dependency, and/or third set dependence, and/or fundamental dependence is or are directly proportional to what zavisimosti between the measured temperature and volumetric flow.

11. The method of claim 8, wherein the first set dependence, and/or set the second dependency, and/or third set dependence, and/or fundamental dependence is or are directly proportional dependency between the measured temperature and volumetric flow.

12. The method according to any one of claims 1 to 7, 9 to 11, characterized in that the preset lower temperature limit (30) is in the range from 115C to 140C, preferably from 120C to 135C, and most preferably about 130C, as specified upper temperature limit (31) is in the range from 140C to 170C, preferably from 145C to 160C, and most preferably about 150C.

13. The method of claim 8, wherein the preset lower temperature limit (30) is in the range from 115C to 140C, preferably from 120C to 135C, and most preferably about 130C, as specified upper temperature limit (31) is in the range from 140C to 170C, preferably from 145C to 160C, and most preferably about 150C.

14. The method according to any of pp.5-7, 9-11, 13, characterized in that the first temperature (29) is equal to or higher than 100C, preferably is in the range from 100C to 130C, and most preferably in the range from 100C to 115C.

15. The method according to claim 8, characterized in that the first temperature (29) is equal to or higher than 100C, preferably is in the range of from 100 the C to 130C, and most preferably in the range from 100C to 115C.

16. The method according to item 12, wherein the first temperature (29) is equal to or higher than 100C, preferably is in the range from 100C to 130C, and most preferably in the range from 100C to 115C.

17. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, characterized in that the measuring frequency of the temperature cycle (33 and 34) during normal operation (32) and/or frequency of on-off of the heating element of the steam generator (4) in the normal mode (32), compare this measured frequency with a given frequency value, and if the measured frequency deviates from the setpoint frequency is greater than the preset deviation value, start the operation Troubleshooting.

18. The method according to claim 8, characterized in that the measuring frequency of the temperature cycle (33 and 34) during normal operation (32) and/or frequency of on-off of the heating element of the steam generator (4) in the normal mode (32), compare this measured frequency with a given frequency value, and if the measured frequency deviates from the setpoint frequency is greater than the preset deviation value, start the operation Troubleshooting.

19. The method according to item 12, characterized in that the measuring frequency of the temperature cycle (33 and 34) during normal operation (32) and/or the switching frequency in the switching of the heating element of the steam generator (4) in the normal mode (32), compare this measured frequency with a given frequency value, and if the measured frequency deviates from the setpoint frequency is greater than the preset deviation value, start the operation Troubleshooting.

20. The method according to any claims 1 to 7, 9-11, 13, 15, 16, 18, 19, characterized in that the operation Troubleshooting includes at least one of the following stages:
(a) the filing of a warning signal, in particular, display a visual warning signal and/or a loud acoustic warning signal, and/or
b) stop or interrupt an active workflow home appliance, and/or
C) turn on water supply water tank (6), which is located in the household appliance (1) or on it, to get water for the steam install (2), mainly by opening a valve, in particular, magnetic limit for opening and closing the water supply of the water reservoir (6), and/or
g) commissioning spare capacity, located in the household appliance (1) or to provide steam installation water.

21. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, characterized in that the money supply (5) for supplying water to the steam generator are the pump (5) or contain a pump (5).

22. The method according to item 21, wherein the volumetric flow rate of padave the second pump (5) water can be adjusted by adjusting the operating frequency of the pump (5) and/or it is included.

23. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, 22, characterized in that the regulation is, at least one electronic control device (8, 10), located in the household appliance (1) or on it.

24. The method according to item 23, wherein the electronic regulating device (8) is combined with an electronic regulating device (10) home appliance (1) and/or connected to an electronic regulating device (10) home appliance (1).

25. The method according to any one of claims 1 to 7, 9-11, 13, 15, 16, 18, 19, 22, 23, wherein the household appliance (1) is a drying machine for textiles, in particular condensing tumble dryer or washing machine.



 

Same patents:

FIELD: electricity.

SUBSTANCE: heat generating electrode is made in the form of conductive plate (1) with one side coated by heat generating substances consisting of layer (2) of powdered homogenous mixture of polycrystalline substances covered by electroinsulating oxide film (3). During manufacture of electrode the following mixture is made with mass fractions (wt %) of calcinated magnesia oxide - 10-30, rubidium chloride 16-20, cesium chloride 5-15, ferrous oxide 10-14, iron oxide 10-14, granite 20-36. Components are powered up to size of particles less than 50 mcm and mixed. Ready mixture is mixed up with water up to pasty consistency. One layer of the mixture is applied to surface of one or two sides of electrode. Pin-point welding of each layer is made. Protruding irregularities of ready coating are removed. Coated electrode is conditioned at muffle furnace at 800C during 2 hours. Electrode coating is baked till non-conductive oxide film is formed at the surface.

EFFECT: improvement of operational performance.

8 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: heating element with controlled power for liquids includes housing, disconnecting device coupled with temperature sensor and mains. The housing of heating element is made of stainless steel in the form of truncated cone or part of sphere and installed up side down and represented as a vessel bottom. Insulating glass ceramic layer is located on the outer surface. Apart from the lower cone cross section or top part of the sphere having cross section diametre no more than 20% of large diametre of heating element bottom, metal ceramic resistor (7) with temperature sensor (8) is installed on the outer surface. There is a shield inside truncated cone or part of sphere, which is made from sheet material capable of withstanding liquid boiling temperature and ensure permanent clearance no less than 3 mm between heating element surface contacting liquid and shield. In addition, there is an opening in the top part of the shield (4), which diametre coincides the diametre of the part of heating element, which is not covered with resistance layer. The electrical diagram of heating element includes unit (9), which controls power of heating element (7) regulated by temperature sensor (8), installed on the surface of metal ceramic resistor (7).

EFFECT: exclusion of liquid boiling on thermal element surface, exclusion of counter current hot and cold liquid flows crossing in heating element, increased rate of liquid heating, energy conservation during liquid heating, reduced noise levels and scale formation on thermal element surface during liquid heating.

3 dwg

FIELD: electricity.

SUBSTANCE: invention relates to electric heating elements intended for equipment of tubular electric heaters (THE) protected against overheating. Four versions of electric heating element design with thermal switch are proposed, where the element comprises heater made of metal wire with high specific electric resistance, in the form of helical spatial spiral, and thermal switch, having thermal link arranged in the form of tube from fusible metal alloy and compensator made of metal wire with high specific electric resistance. In the first version of design thermal switch comprises electric terminal made of metal wire, end of which is connected to end of thermal link, and contact made from metal tube, end of which is partially placed onto other end of thermal link and is connected to it. Compensator of thermal switch is arranged in the form of stepped spatial spiral, narrowed part of which is introduced into other end of contact and is connected to it. Electric terminal is introduced with its other end to end part of heater and is connected to it. In the second version of design thermal link is partially inserted by its one end into end portion of compensator at the side of turns connected to each other and is connected to it, by its other end it is connected to electric terminal. Electric terminal is introduced with its other end to end part of heater and is connected to it. In the third version of design thermal link is partially inserted by its one end into end portion of compensator, and is connected to it, by its other end it is connected to electric terminal end. By its other end electric terminal is introduced into end part of heater and is connected to it. In the fourth version of design thermal link of thermal switch is arranged as closed at one end, other end of thermal link is inserted into end part of compensator and is connected to it. End of heater is placed onto closed end of thermal link and is connected to it.

EFFECT: simple design of device, lower labour intensiveness of device making, small time of thermal switch actuation.

10 cl, 35 dwg

FIELD: heating.

SUBSTANCE: invention refers to heating device of appliance with water conduit for operation on running and/or contaminated water, namely for electric household appliances, such as washing or dishwashing machine; at that, heating device has at least one heating element, and this heating element is located on or in water conduit; at that, water conduit wall has the hole in the heater zone and conductivity metre is also provided, which is installed so that it is in the zone of that hole or protrudes through the hole inside water conduit.

EFFECT: invention allows optimising the need for washing liquids owing to improved measuring devices of water and time saving.

18 cl, 3 dwg

FIELD: food industry.

SUBSTANCE: invention relates to cooking stoves controlling units. Device for food cooking contains inlet for energy source, element of cooking for usage of cooking energy for the product, cooking controlling unit for controlling usage of cooking energy for the product, block system which is chosen to prevent usage of cooking energy for the cooking element, block system cannot be chosen when controlling unit is on and user's interface. Interface provides block choice indication as a respond for try to activate cooking controlling unit when block system is chosen.

EFFECT: increased serviceability of stove using, increased safety.

10 cl, 4 dwg

FIELD: instrument engineering.

SUBSTANCE: invention concerns liquid heater (1) that comprises pipe coil (5), electrical heating coils (4) and switch (6) selectively positioned to switch on and switch off the heating coils. Besides, the invention involves safety fuse (7) which while in service is to be heated with the electrical heating coils and designed to be fused at least partially when temperature at least within zone (8) of the electrical heating coils passes a critical threshold and to change switch (6) between on/off position.

EFFECT: invention allows to power off the heater in a certain operation threshold.

9 cl, 4 dwg

FIELD: mechanics, heating.

SUBSTANCE: proposed device comprises the following components, i.e. multiple sheet heaters wherein electrically conducting material made up of graphite and black is dispersed and mixed with disperse medium of polyimide-based synthetic pitch, water-resistant insulating materials made up of polyimide-based pitch. Each of the aforesaid materials features high heat stability, mechanical properties, electrical characteristics and chemical inactivity in a wide temperature range from very low to high temperatures. The device comprises also a container made from synthetic pitch to house sheet heaters and insulating layered materials. Note here that the sheet heaters are arranged in layers between which insulating material is fitted. The second version of the device comprises a set of sheet heater units.

EFFECT: simple design and long life, low production costs.

12 cl, 8 dwg

FIELD: chemistry; electro-chemistry.

SUBSTANCE: present invention pertains to the chemical industry, and particularly to silicon production in reactors of hydrogen reduction of polychorosilanes, and can be used for controlled heating of polycrystalline silicon bars in a reactor. The outcome is achieved by that, the rectifier unit of the input supply voltage of the device, consisting of two independent rectifiers, has a circuit which provides for serial or parallel connection of the rectifiers. A voltage of 1000 V is obtained from a series connection of the rectifiers, which is used in the initial period of growing silicon bars. Parallel connection of the rectifiers produces 500 V, used in the final stage of growing silicon bars, which uses more than 1000 A. Powerful transistor switches for controlling the heating current are controlled using a pulse-duration conversion method. Rectification of pulsed current of transistor switches is done using a power impedance coil, connected in series with the heated bar and a diode, reverse connected to the supply and closing the circuit of the impedance coil through the heated bar in the off-state period of the transistor switches. Control of the current regulator is done using a microprocessor system with an operator console. Initial heating of the silicon bars to working state is done using the operating voltage of the device through series connection and warming up parts of the silicon bars.

EFFECT: design of a device for controlling heating of silicon bars with high utilisation factor of electrical energy and high smoothing factor of direct current, used for heating the silicon bars.

5 dwg

FIELD: electricity.

SUBSTANCE: plastic element (2) designed for attachment onto the electric heater has mounting hole (12) arranged in it for insertion of fixture element required for the plastic element fastening onto the electric heater surface. The mounting hole (12) has insert (16) fabricated of low thermal conductivity material such as stainless steel that covers virtually the whole of the mounting hole lateral surface.

EFFECT: reduction of heat transfer towards the plastic element ensuring the latter's protection against thermal damage.

13 cl, 2 dwg

FIELD: industry for heat treatment of objects of various physical natural.

SUBSTANCE: the conveyer-type radiant heating installation has a polished tunnel with electric heaters located inside the tunnel, overhead conveyor moving the heating objects inside the tunnel, overhead device, conveyer electric drive, computer, furnace thermocouples, in addition the installation is provided with a controller of the electric heaters and object position pickups, controller of the conveyor electric drive, infra-read images and contactless position pickups of the position of each heating object relative to the heating zone, the controller of the electric heaters and position pickups is series-connected to the contactless pickups of the object position and the electric heaters, and the controller of the conveyer electric drive is series-connected to its electric drive, the outputs of all the controllers are connected to the control computer via a coupling device.

EFFECT: reduced consumption of electric power due to the use of a separate controller control of the electric heaters and conveyer electric drive.

1 dwg

FIELD: electricity.

SUBSTANCE: what is offered is an electric appliance containing a tank in which water is boiled, and lime scale removers for the boiler; said lime scale removers comprise a scale collector mounted close to a tank bottom. The tank mentioned above is demountable through a hole formed in either a side wall of the tank, or at the top of the tank, and said hole is plugged, while the collector is elongated to facilitate removal from the tank through said aperture.

EFFECT: promoted easy lime scale remove from the water boiling devices.

12 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: washing machine comprises housing accommodating steam generator arranged there inside. Said steam generator comprises water chamber. Said water chamber incorporates water heater and steam chamber to accumulate steam generated as water is heated. Vertical water chamber length exceeds horizontal length. Steam chamber horizontal length exceeds water chamber horizontal length. Hear is arranged vertically in water chamber.

EFFECT: higher operating performances, ease of steam generator mounting in washing machine.

18 cl, 14 dwg

FIELD: power engineering.

SUBSTANCE: vertically arranged heater-heat exchanger comprises fastening flange, hollow stand, tubes and electric contacts arranged helically along periphery. Diametre of tubes reduces to their upper part. Tubes are installed in one-piece vessel around heater.

EFFECT: activation of principle of spontaneous thermosiphon circulation of liquid with its direct changeover into steam-like aggregate condition.

3 dwg

FIELD: power engineering.

SUBSTANCE: point steam generator comprises hollow base with outer thread, heater installed inside, electric contacts, mount flange and inbuilt rod-heat sink, which changes into cone-shaped heat exchanger with vertical main rod. Cone-shaped hollow heat exchanger is fixed onto base by means of thread, having outer heat insulation and having diametrically opposite inlet channels in its lower part, and outlet nozzle - in its upper part.

EFFECT: activation of principle of spontaneous thermosiphon circulation of liquid with its direct changeover into steam-like aggregate condition.

1 dwg

FIELD: personal effects.

SUBSTANCE: evaporative unit for washing machine consists of a body with water storage area, heater located inside machine body to heat water and circuit breaker preventing overheating. Temperature sensor is located close to the second end of heater opposite to the first end. Sensor measures temperature at the second end of heater. According to option 2 of invention, heater is inclined so that the end area where circuit breaker in installed is above opposite end. If evaporative unit is installed in washing machine with inclination, one heater end where circuit breaker is installed is above opposite heater end.

EFFECT: prevention of inflammation and body deformation due to heater overheating.

9 cl, 12 dwg

FIELD: mechanic, energetic.

SUBSTANCE: the invention relates to steam generators with electrical heating and can be used for generating overheated steam. The technical result of the invention is the increase in temperature of the overheated steam and decrease in the metal consumption and the steam generator dimensions. The said technical result is achieved by installing a metallic shell coaxially inside of the steam generator body; the shell has a hole for water feeding, in which an electrical heater is located, made of two parallel-wound nickel-chromium spirals separated by a filter; the cavity inside of the electrical heater and the area between the walls of the shell and the electrical heater are filled with a thermal-resistant granular material.

EFFECT: increases overheated steam temperature, decreases metal consumption and device dimensions.

1 dwg

The invention relates to agriculture, and is intended for separate production of steam and hot water in a single device when working in open systems hot steam and water and can be used for steaming and washing maintenance, milk equipment, packaging, pasteurization, cooking and Park the feed, thermal processing of vegetables and fruits, sanitary needs, and in other processes on livestock farms, lines and plants for processing of dairy products

The invention relates to a power system and can be used for simultaneous and separate production of steam and hot water mainly in agriculture

The invention relates to agriculture, and is intended for separate production of steam and hot water in a single device when working in open systems hot steam and water and can be used for cooking, steaming, feed, heat treatment of fruit and vegetables, steaming and washing maintenance, pasteurization of milk, hygiene needs and in other processes on livestock farms, mini-mills and plants for processing of dairy products

The invention relates to a power system, and more particularly to a device for generating superheated steam by electricity, and is designed to produce superheated steam to compensate for the consumed electricity, heating of residential and industrial premises, as well as other industrial and commercial purposes

FIELD: consumer electronics.

SUBSTANCE: invention refers to the washing machines. Washing machine with upper loading contains the tub wheel rotating around horizontal axis placed inside the tank with the hole in the top, cover for opening/closing access to said tub wheel, outer frame with upper cover hinged in its rear part, locking unit for locking/unlocking the cover with upper surface of frame and outer control unit capable of controlling said locking unit. Outer control unit includes the button element located on front upper part of frame. Said cover is outfitted with elastic device for its lifting into open position at releasing and automatic braking device.

EFFECT: increased convenience of upper cover opening.

6 cl, 7 dwg

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