Washing machine with device of prevention of back flow

FIELD: textiles, paper.

SUBSTANCE: washing machine comprises a washing tank (1), a feeding pipeline (2) for feeding water taken from the water-supply network, and a device (3) for preventing the back flow, made with the ability to close the water flow channel, at that the device (3) for prevention of the back flow is connected to at least one outer wall of the tank (1).

EFFECT: increased efficiency.

19 cl, 6 dwg

 

The invention relates to a washing machine equipped with a device to prevent reverse flow according to the restrictive part of paragraph 1 of the claims.

Known washing machine (usually a washing or washing-drying machine) connected to the water supply through the supply pipe, so that they may be lled with water during various stages of work. To prevent reverse flow from the washing machine into the water system typically uses a device to prevent reverse flow: the sudden drop of pressure in the distribution network can lead to undesirable reverse flow is contained in a washing machine technical water in the water supply network that will lead to contamination contained in the water system with clean tap water with detergents and dirt.

This problem is resolved through the creation of devices capable of preventing the occurrence of reverse flow.

It is known safe and cheap device to prevent reverse flow, the principle is based on the gap of the channel for water in the feed line to prevent the spread of any pressure waves in the direction of the water network, which can lead to the transfer of contaminated water into the water system. Such a device is azyvaetsja "air circuit breaker".

Generally, washing machines are equipped with a drawer dispenser for dispensing detergent, a device to prevent reverse flow is in the box, closer to flow to the compartments containing detergents, to prevent the ingress of such funds in the water supply network. Usually the water gets on detergents top: with this purpose, the supply pipe is raised to the upper part of the box containing detergents, and water gets on top of him, so that the feed water flow channel is aborted.

However, this involves the creation of a fairly complex system that is associated with the dispenser drawer: essentially, the supply pipe must be routed from the back of the machine (where it is normally connected to the water network) to the front side (where the drawer dispenser); then it should go in the dispenser located above the drawer, so that the water could get into the box, where another pipe must be directed to the washing Baku.

This solution is not optimal from a constructive point of view, even for machines equipped with a dispenser in the form of a box; for vehicles without such dispensers this decision even more challenging.

In such machines, the detergent dispensers are located essentially on the inner or outer walls of the tank (including those dispensers which are located on the door for access into the tank), ka is described, for example, in document EP 1445368 from MERLONI ELETTRODOMESTICI S.p.A. or in documents WO 2007/119170 and WO 2008/044131 from INDESIT COMPANY S.p.A.

In such a washing solution tank can also be supplied with water directly from the mains, so that the location of the device to prevent reverse flow used in cars equipped with dispenser drawer, creates additional disadvantages because such a device must be installed in a separate node on the body or frame of the machine and connect it to the supply pipeline water supply network and with the feed pipe of the tank, which complicates the design of the machine.

To prevent reverse flow is commonly used non-return valve. However, in addition to increasing the cost of manufacture, it is subject to possible failure, because it is not inherently trusted by the device.

The objective of the invention is to provide a washing machine equipped with an inexpensive, reliable and easy to manufacture device to prevent reverse flow.

The objective of the invention is solved in a washing machine, including signs attached claims, which is an integral part of the present description.

The present invention is based on the idea of creating a device to prevent reverse flow, which is integral with analnogo tank and which may interrupt channel to supply water to prevent reverse flow of process water in the water supply.

As follows from the description, it helps to simplify the design of washing machines, allowing you to use a very reliable and inexpensive device for preventing the reverse flow.

Features and additional advantages of the present invention will be clear from the following description of a variant embodiment of the invention, given as non-limiting example with reference to the accompanying drawings.

Figure 1 shows the tank of the washing machine with a device to prevent reverse flow according to the invention, a rear view in perspective;

figure 2 shows the tank shown in figure 1, with no split device to prevent reverse flow, a front view in section;

figure 3 - same as figure 2, but with split device to prevent reverse flow;

figure 4 shows in perspective of the device to prevent reverse flow in figure 3;

figure 5 shows a device for preventing reverse flow, shown in figure 2, on an enlarged scale;

figure 6 shows a device for preventing reverse flow, is shown in figure 3 in an enlarged scale.

As shown in figure 1, a tank 1 of a washing machine equipped with a feed pipe 2 for supplying water from the water supply and drain pipe 3 for discharging those who practical water from the tank 1.

Inside the tank 1 is a rotating drum (not shown) for processing linen in the washing machine. The side wall 41 and the rear wall 42 of the tank shown in figure 2-6.

In the tank 1 usually has a front opening which can be closed by a door (not shown)located on the front side of the washing machine. Through the front hole linen is loaded into the rotating drum.

In the upper part of the tank 1 there is a 3 to prevent reverse flow according to the invention.

As shown in figure 2, 3 and 4, device 3 includes a container, which is connected with the wall of the tank 1 and is connected to the supply pipe 2.

Internal camera unit 3 to prevent back-flow is limited to the lower wall 31 formed by the wall of the tank 1, and the outer walls 33, 34 and 35, is made in one piece with the tank 1. On top of the camera is closed by the top wall 32 and is connected by fluid from the interior of the tank through the drain hole 5.

The camera device 3 to prevent reverse flow is divided into two parts perforated wall 6, through holes which pass water supplied by the feed pipe 2, interrupting, thus, the smooth flow of supplied water and preventing the spread of any pressure waves in the direction of the water network, i.e. preventing reverse p is current.

Device 3 to prevent back-flow works as follows: pick up from the mains water is supplied through the pipeline 2 in the upper part of the camera device 3, where it flows through the holes of the perforated wall 6 and passes into the second part of the chamber toward its bottom, which represents the outer wall of the tank, and then through the drain hole 5 gets into the tank 1.

It should be noted that the drain hole 5 is located at the bottom of the camera device 3, which excludes the presence of any of the recesses, which can accumulate water.

It should be noted that although the device 3 to prevent reverse flow is shown in the form of an essentially parallelepiped, it may have another shape, for example, cubic, cylindrical or prismatic.

Performing at least part of the device to prevent reverse flow in one piece with the tank 1 and, in particular, that the bottom wall 31 is the wall of the tank 1, provides several advantages: for plastic tanks mentioned part may be molded together with the rest of the tank, which reduces the time of Assembly, installation and the cost of such devices, simplifying at the same time, the internal hydraulic circuit of the machine.

In this connection it should be emphasized that the device for preventing reverse PhotoImage to be performed in several different ways, all of which are advantageous from the standpoint of Assembly time and cost of production.

According to the first method, the outer wall bounding the chamber below the perforated wall 6, made in one piece with the side wall of the tank. Preferably, for example, if the tank is made of plastic material, these walls are performed during the same molding operation, which is performed for the manufacture of the tank (i.e., they are molded together). The perforated wall 6 and other elements of the device to prevent reverse flow, in particular, for example, the upper wall 32, are made as an element separate from the tank, and attached as a cover, for example, by means of rods or screws.

According to another variant embodiment of the invention the entire device, if the geometry is made in one piece with the tank, for example, if the tank is made of plastic, joint formation; this provides significant advantages during Assembly and installation, which are much faster and easier.

It is also worth noting that this design may be subjected to various changes, for example, it is possible to make the entire device in one piece with the tank, with the exception of one outer wall, or attach all external walls to Baku or in other ways. All of these options are not beyond altoadige of the invention, whereby at least part of the device is made in one piece with the tank.

An additional advantage is that the reliability of the hydraulic circuit, as a device to prevent reverse flow with no moving parts (such as valve), which could be prone to malfunction.

To create an effective device to prevent back-flow interrupt flow channel extends to a minimum length of 20 mm In this example this corresponds to the minimum distance between the perforated wall 6 and bottom wall 31.

From the side of the perforated wall 6, where water flows through the supply pipe 2, funds are available 7 deviation of flow made with the possibility of the flow direction of the water supplied evenly through the holes in the wall 6.

Preferably, the device 3 is not at the top of the tank, which reduces the overall height of the machine. Essentially, this device is located at the downward surface of the side wall of the tank so that it acts up only a small height or not is, remaining in the latter case, within the vertical dimension of the tank and thereby allowing you to obtain a compact and low machine.

In particular, it is preferable that the drain hole 5 was is located at the downward surface of the side wall of the tank in the direction of rotation of the drum during the spin cycle. Essentially, although washing machines offer the ability to change the direction of rotation of the drum, the drum during the spin cycle usually rotates only in one direction (clockwise or counterclockwise).

During this cycle contained in the tank water is subjected to drum rotating at high speed, hitting the inside wall of the tank. When the drain hole is located as described above, the vector of the tangential velocity of the water in the above-mentioned hole is rotated relative to the holes 5 in the direction opposite the side on which the camera device 3, therefore, the device 3 is not filled with water.

At the location of the drain hole 5 of the device 3 on the descending part (in the direction of rotation of the drum side wall of the tank prevents re-entry of water into the chamber of the device through the hole.

From this point of view, if you look at the tank from its hole, as shown in figure 2, one can see that during the spin cycle the drum rotates counter-clockwise, therefore, the drain hole 5 of the device 3 is located on the left side of the upper part of the tank (as shown here). If the drum rotates clockwise during the spin cycle, 5 hole would be located on the right side is rhna of the drum.

The outlet connecting the camera device to prevent reverse flow from the environment, can be so arranged as to avoid excess pressure in the chamber. Of course, the hole must be of such a size and location to avoid any leakage of water from a feed line 2: for example, it can be placed on the wall 33, the most remote from the wall to which is connected the pipe 2.

In a washing machine according to the invention also has a hole 8 located in the upper part of the tank, the inner part of which is connected with the environment at atmospheric pressure. Hole 8 is made in the tank below the drain hole 5, so that if the tank is overfilled above the normal operating levels, the excess water out through the hole 8 and not through the hole 5.

In the drawings, the hole 8 is located on the side of the tank opposite to that on which the device 3. According to a preferred variant of the invention (not shown), the hole is located on the side of the tank, which represents the descending portion of the side wall in the direction of rotation of the drum during the spin cycle to prevent leakage of water from the tank through the opening 8 during rotation of the drum.

During normal operation styra Inoi machine the water in the tank never reaches the heights of the openings 8, which, therefore, performs the function of maintaining the air pressure in the tank is equal to the atmospheric, thus preventing damage to the sealing gaskets of the machine any excess pressure (for example, due to temperature increase).

In the case of complete filling the tank with water because of a malfunction, the hole 8 is able to prevent any reverse flow, because it is below the drain hole 5, therefore, the excess water is bypassed as soon as reached the level of the hole 8, which prevents re-formation of a continuous flow channel, interrupted by the device 3. Essentially the hole 8 performs two functions: it maintains the air pressure in the tank 1 is equal to atmospheric and prevents any reverse flow of water toward the water supply network in case a malfunction of the machine causes the filling of the tank 1.

Of course, this device may be subjected to numerous modifications within the scope of the present invention.

Among the possible changes worth mentioning is easy and very inexpensive solution, characterized by the removal of the perforated wall 6. In this embodiment of the invention, water is supplied to the device to prevent reverse flow of the feed pipe 2 and then passes through the direction is to the drain hole 5. In this case, it is also advisable to interrupt a length of at least 20 mm in order to avoid any risk of excessive pressure, as described above.

According to an additional preferred variant implementation of the invention, the device 3 to prevent reverse flow can also be used to transfer the detergent into the tank. For this device to prevent reverse flow may contain underneath the perforated wall 6 of the compartment for detergent, for example, the mailbox is accessible from the outside of the machine, or additional pipeline underneath the perforated wall 6 to supply detergent into the chamber so that the stream of water hits in detergents and transfers them into the tank through the opening 5.

In the simplest case, there may be additional pipe connected to the chamber and associated with the container for detergent, for example, with long container filling, which is usually located at the base of the machine. Detergents can get from this container, for example, using a pump and fed directly into the device to prevent reverse flow, from which they then fed into the tank through the drain hole 5.

According to alternative detergents are placed in the camera device underneath the perforated wall 6 with OSU filled mailbox. In this case, the device to prevent reverse flow must be placed in front of the vehicle, where the access hole to the tank, being easily accessible to the user. In fact, the mailbox is part of the device 3, since it can be inserted into the chamber and removed from it, and it can get a stream of water, which then transfers the detergents in the direction of the drain hole 5 in the tank.

For this purpose, the box can be made holes for passage of water and detergents.

1. Washing machine containing a washing tank (1), the supply pipe (2) to supply water from the water supply and the device (3) to prevent reverse flow, is arranged to interrupt channel for the flow of water, characterized in that the device (3) to prevent reverse flow connected with at least one outer wall of the tank (1).

2. Washing machine according to claim 1, characterized in that the device (3) to prevent reverse flow at least partially made in one piece with the tank (1), and in the case of complete tank of plastic material device to prevent reverse flow, at least partially performed during operation of the forming tank (1).

3. Washing machine according to claim 1, characterized in that the device (3) to prevent the oil return flow contains a hollow body, defining a chamber to which is connected the supply pipe (2), and this camera is limited to, at least one bottom wall (31), which is the wall of the tank (1), made it a drain hole (5)providing fluid communication of the chamber with the tank (1).

4. Washing machine according to claim 2, characterized in that the device (3) to prevent reverse flow contains a hollow body defining a chamber to which is connected the supply pipe (2), and this camera is limited to, at least one bottom wall (31), which is the wall of the tank (1), made it a drain hole (5)providing fluid communication of the chamber with the tank (1).

5. Washing machine according to claim 3, characterized in that the camera device (3) to prevent reverse flow is divided into the first part related to the conveying pipe (2), and the second part, partially limited the bottom wall (31), and between the first and second parts is perforated wall (6), made with the possibility of bandwidth supplied by the feed pipe (2) water from the first part to the second part for the interrupt channel for water flow.

6. Washing machine according to claim 4, characterized in that the camera device (3) to prevent reverse flow is divided into the first part related to the conveying pipe (2), and the second part, partially ogran the Chennai bottom wall (31), moreover, between the first and second parts is perforated wall (6), made with the possibility of bandwidth supplied by the feed pipe (2) water from the first part to the second part for the interrupt channel for water flow.

7. Washing machine according to claim 3, characterized in that the drain hole (5) is made in the bottom of the camera.

8. Washing machine according to claim 4, characterized in that the drain hole (5) is made in the bottom of the camera.

9. Washing machine I, characterized in that the drain hole (5) is made in the bottom of the camera.

10. Washing machine according to claim 6, characterized in that the drain hole (5) is made in the bottom of the camera.

11. Washing machine according to any one of claims 1 to 10, characterized in that the device for preventing the return flow is arranged to interrupt channel for the flow of water to a minimum length of 20 mm, in particular, the distance between the perforated wall (6) and bottom wall (31) is about 20 mm

12. Washing machine according to any one of claims 1 to 10, characterized in that it further comprises means (7) deviation of flow direction of flow of the water supplied evenly through the holes in the perforated wall (6), and the means of deflection of the stream are located on the side of the perforated wall (6)directed toward feeding the mu pipeline (2).

13. Washing machine according to any one of claims 1 to 10, characterized in that the tank (1) and the part of the device (3) to prevent reverse flow is made of plastic by a single molding operation.

14. Washing machine according to any one of claims 1 to 10, characterized in that it further has a hole (8)connecting the internal space of the tank with the environment.

15. Washing machine 14, characterized in that said hole (8) is located on the tank below the drain hole (5).

16. Washing machine according to any one of claims 1 to 10, 15, characterized in that the drain hole (5) is located on the descending part of the side wall of the tank in the direction of rotation of the drum during the working cycle of the spinning machine, so that the drain hole (5) the vector of the tangential velocity of the water is turned in the direction from the side on which the camera device (3) to prevent reverse flow.

17. Washing machine according to any one of claims 1 to 10, 15, characterized in that the device for preventing the return flow has an outlet opening to maintain atmospheric pressure in the chamber.

18. Washing machine according to any one of claims 1 to 10, 15, characterized in that the device for preventing reverse flow contains a compartment for the storage of detergents, located in the camera device to prevent reverse flow under performtowin the second wall (6).

19. Washing machine according to any one of claims 1 to 10, 15, characterized in that the storage compartment detergent made in the form of a box and accessible from the outside of the machine, preferably with the front wall.



 

Same patents:

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23 cl, 2 dwg

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1 cl, 2 dwg

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FIELD: machine building.

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5 cl, 5 dwg

FIELD: textile, paper.

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EFFECT: optimised washing process.

18 cl, 4 dwg

FIELD: textile, paper.

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7 cl, 2 dwg

FIELD: electricity.

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EFFECT: improving domestic device operation reliability.

13 cl, 5 dwg

FIELD: textile, paper.

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28 cl, 3 dwg

FIELD: textile, paper.

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EFFECT: improved reliability of device for processing linen with a tool of weight measuring, the possibility of replacing the tool of weight measuring in case of breakage, without disassembly of the processing linen device housing.

13 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: on an external side of a false control panel (22) there are control segments (38) and indicator segments (36) for control or monitoring, and also with an electric circuit device (24), which is connected to control segments (38) and indicator segments (36) and is arranged in the area of inner side of the false control panel (22). At the same time the circuit device (24) has at least three electrodes (50), which are arranged as distributed approximately in parallel to the false control panel (22), and also facilities of data processing (54), which are tuned to determine the spatial position of a control facility (40) by an estimate relative to the position of three electrodes (50), and namely by determination of a numerical value of fields between electrodes (50) and the control facility (40) so that the control segments (38) as locations of the control facility (40) are made with the possibility of free determination in the area of the outer side of the false control panel (22), besides, for numerical determination of the specified fields, each of the electrodes (50) by means of an oscillator unit (56) is connected with a comparison device (58), providing for assessment of frequency displacement in the area of the oscillator unit (56), and outlets of comparison devices (58) are connected with a microcontroller (60), providing for recalculation of frequency displacements into parameters of position of the control device (40).

EFFECT: creation of an improved design of a false control panel and an improved method to manufacture such a false control panel design.

19 cl, 8 dwg

FIELD: textiles, paper.

SUBSTANCE: washing and/or drying system includes a washing machine of mainly domestic type with an electronic control unit and contains a radio frequency identification device (RFID) able to communicate with the means of communication of labels corresponding to the items of linen. Means of communication of labels are embedded in a variety of flexible containers wherein the items of washed linen are selectively loaded according to their different characteristics. At the top of the washing machine a radio frequency identification device and strain-gauge scales are integrated in order to send appropriate input signals to the control unit of the machine and to operate it.

EFFECT: improved organisation of selective collecting of dirty garments for the most efficient and accurate loading of washing machine.

5 cl, 1 dwg

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

FIELD: textiles, paper.

SUBSTANCE: invention relates to the method of determining of at least one parameter of textile products and/or at least one parameter of a programme execution in the device of textile products treatment, in particular, in a drying device, a refreshing device or in a washing machine with a drying function. At that the device of textile products treatment contains a compartment intended for keeping the treated textile products, and at least one device for feeding additive, in particular, a steam. The method includes the steps, at which: the additive is supplied from at least one device for feeding additive, the response (S, A, C) of textile products in the compartment is determined as reaction to feeding supply, and by processing a specific response at least one parameter of textile goods is determined. The parameter of textile products is a type of textile products and/or the number of textile products. Also a textile products processing device is disclosed, having a control module and made with the ability to determine at least one parameter of textile products.

EFFECT: convenience of use and efficiency are provided.

32 cl, 5 dwg

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