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Drum type washing machine with jet processing of articles. RU patent 2517544. |
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IPC classes for russian patent Drum type washing machine with jet processing of articles. RU patent 2517544. (RU 2517544):
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FIELD: textiles, paper. SUBSTANCE: drum type washing machine with jet processing of articles, comprising a cylindrical horizontally located tank, the rotatable washing drum located in it with the ridges and holes in its cylindrical part, the drum rotary drive, the control system, the hydraulic pump, several nozzles located in a row parallel to the axis of rotation of the drum, the working fluid is supplied to them by the hydraulic pump. At that the washing machine is also provided with a hydropneumatic accumulator and a three-way three-position flow distributor. In the starting position the three-way three-position flow distributor connects the input line to the hydropneumatic accumulator with the output line from the pump, and in the second position it connects the hydropneumatic accumulator to the hydraulic line supplied to the jet nozzles. The first hydraulic valve position corresponds to the period of time of the drum rotation, for which the working ridge of the drum raises the washed article to a height at which the jet nozzles are actuated, and the second position corresponds to the period of time of alignment of the nozzle holes with the holes in the washing drum. EFFECT: increased operational reliability. 1 dwg
The invention relates to household appliances, in particular for household washing machines drum type, and can be used in industrial and domestic washing machines with horizontal drum. Known washing machines, including housing, washing tank and placed in it we turn the wheel, on the inner surface of which there are ridges to penelopedevine linen washing, for example washing machine "Vyatka machine" (Modern washing machines and detergents / Skorobogatov N.A. BHV, S. Petersburg, arlit, 2001, str) /1/. Such washing machines contain tank, the dryer, the pump is used, at least for the evacuation of the spent cleaning solution, the control system providing the selection mode and an algorithm for washing. The washing machine drum-type due to their characteristics, possibilities of program management washing process and run in the same container processes soaking, penelopedevine, rinse, pressing and drying - are the most common. In these washing machines, washing process is ensured by raising the crests of linen with its subsequent fall in the lower part of the rotating drum, the drum rotation frequency is limited by the manifestation of centrifugal forces, pressing linen to the surface of the drum, and the rate of fall of linen in the lower part of the tank, due to the acceleration of free fall. These constraints do not allow to increase the frequency of rotation of the drum and thus increase the overall speed of washing. Consequently, the intensity of washing - low, the washing process takes a relatively long time, which is a disadvantage of such washing machines. Known technical solution where the washing process is complemented by the impact jets from nozzles for washing machines top loading. (Washing machine with top loading. Patent RU №2435884 C2, IPC D06F 21/00. Patentee: ELECTROLUX HOME PRODUCTS CORPORATION NV (BE)published: 10.12.2011) /2/. Such washing machine also provides a means of spraying, which are connected with the pipeline of water supply and are designed for spraying placed in the drum linen for its moisturizing with the aim of reducing the size of wet linen under the action of gravity. The disadvantages of this washing machines are the low intensity of processing of sheets in the wash due to the impact on erasable products are not jets, and by spraying and not washing solution, and water. It still remains relatively low drum rotation frequency, which causes increased the period of the washing process and increased energy consumption. Closest to the technical nature of the claimed is a washing machine drum type, including cylindrical and horizontal tank, placed in it rotating washing drum with ridges and holes in its cylindrical part, the drive of rotation of the drum, the control system, hydraulic pump (Washing machine drum. Patent RU №2412289. Publ. 20.02.2011) /3/. This washing machine is provided with multiple nozzles arranged in a row parallel to the axis of rotation of the drum, the working fluid which is served by the water pump. Jet nozzles mounted on a cylindrical surface of the tank symmetrically relative to the vertical plane passing through the axis of rotation, at a height of 0.5...0.9 diameter of the drum, and the outlet nozzle is oriented downwards at an angle of 10...90 degrees to the horizontal, and the holes on the reel at the base of the ridge is made of oval form and is in line parallel to the tops of the ridges at a distance equal the gap between the nozzle, so that when rotating drum injector nozzles tank and the hole in the drum briefly together and washing machine are fitted with sensors combine nozzle holes and working holes of the perforated drum, the output signal which is transmitted to the control system, short-term opening of the nozzle injectors with respect to the direction of rotation of the drum. This technical decision has been taken as a prototype. The main reason of the limited effectiveness of this technical solution is relatively small performance standard pumps, used in household washing machines. For most manufactured washing machines their performance does not exceed 40 l/min (40 dm3 /min). As shown by theoretical calculations, this pump performance is not enough for effective implementation of the method of washing with impact jets washing solution on the objects, the washing of the prototype. For example, inkjet nozzles with outlet diameter of 6 mm at the speed of a jet of more than 10 m/s (100 DM/s) the necessary expenditure for one injector is equal to: Q=V C ·S C =100 DM/s·78,5·10 -4 DM 2 =0,785 DM 3 /sec, where V c is the velocity of the jet, S c - section of a jet at the exit of the nozzle. For eight nozzles consumption is equal to Q 8 =6.28 DM 3 /sec, or 376 l/min It is approximately 10 times the performance of the pump type of household washing machines. Thus, the performance of the model of the pump household washing machines are not sufficient for the implementation of the device is a washing machine of the prototype. Extra pump with high productivity will increase the cost of washing machines. The disadvantage of the washing machine the prototype is a low intensity Laundry and a small increase in the frequency of rotation at operations "wash" and "rinse". Another disadvantage of such washing machines is the need to use additional water pump for speed jets from nozzles and sufficient performance (second consumption), which increases the cost of washing machines. The objective of the invention is to eliminate these disadvantages, namely the increase of the efficiency of the washing process and reducing the cost of washing machines. The task is achieved by washing machine drum-type type with jet processing products, including the cylindrical and horizontal tank, placed in it rotating washing drum with ridges and holes in its cylindrical part, the drive of rotation of the drum, the control system, hydraulic pump, several nozzles arranged in a row parallel to the axis of rotation of the drum, the working fluid which is served by the water pump, equipped with hydropneumatic accumulator, three-way, three-speed valve flow in the initial (first) position this thread allocator line connects the entrance to the hydropneumatic accumulator with an output line from the pump, and in the second position of the valve flow connects the hydropneumatic accumulator with hydroline connected to jet injectors, so that the first position of a three-way three-position valve flow corresponds to the period of rotation of the drum, for which work crest drum raises erasable product to a height at which included jet injectors; and three times the state of this distributor flow corresponds to the period of time combining nozzle holes with the holes in the washing drum. The force of the blast pressure (P), due to the speed of a jet, a cross-section of a jet from a nozzle jet injectors and density of washing solution. As is known (Timbuktu. Engineering hydraulics/ reference book. Ed. 2nd revised and enlarged. - M: machine-building, 1971. - S) /4/, this effort can be defined by expression: P=ω·V 2 ·p, where the Uragan - sectional area of the jet, V - stream velocity, p is the density of the washing solution. To increase the impact of the jet to erase the product it is necessary to increase the cross-section builds, and/or the speed of a jet, and/or density of the washing solution. The increase in the cross section of the outlet of jet injectors and increase the speed of the jet will lead to increase of consumption of liquid transferred to inkjet nozzles. In the invention of the second increase of consumption of washing liquid to inkjet nozzle is provided due to application of the hydropneumatic accumulator. When the speed of the jet from a nozzle, equal, for example, 10 m/s, air force, developed eight nozzles, whose cross-sectional area of the outlet openings equal 78.5 mm 2 is approximately 22 H and at a speed of 20 m/s - 89 N. In the second case, the second consumption of the washing solution will be 12,56 l/s, or about 752 l/min, which can be achieved using hydropneumatic accumulator. The essence of the invention is illustrated by drawings, where the scheme of inclusion of jet injectors and hydropneumatic accumulator. Washing machine consists of a housing 1, tank 2, which made the hole and placed nozzle 6; drum 3 attached to its inner surface ridges 4; pump 5; the first three-way three-position valve flow 8 to connect the hydropneumatic accumulator 7 to the injectors 6; the second three-way three-position valve flow 9 to supply cleaning solution or water to the injectors 6, three-way dip valve 11, hydraulically connect the output of the pump or Sewerage line, or line input in hydropneumatic accumulator, a control unit 13. Washing machine fitted with sensors provisions of the ridges (not shown). At the entrance to the hydropneumatic accumulator 7 installed valve pressure limits 10. In the initial position (shown in the drawing) of the first three-way three-position valve flow 8 output line from the three-way dip drain valves 11 are connected with line of input in the hydropneumatic accumulator 7, in this line of liquid supply (cleaning solution or water) during the second three-way three-position valve 9 closed. In the second position of this thread allocator 8 all hydroline connected to this distributor, are closed. In the third position this thread allocator 8 hydroline from hydropneumatic accumulator 7 is connected to the input of the second three-way three-position valve flow 9, and the line connected to the three-way dip the drain valve is closed. Three provisions of the second three-way three-position valve flow 9 provide the direction of the flow of fluid from the hydropneumatic accumulator 7 in the left (see drawing), a number of nozzles (with spin counterclockwise) or in the right lane nozzles(with spin clockwise) or simultaneously in both the number of injectors in the moisture regime, products after time and download drum or for simultaneous impact jets to wash products. Valve pressure limits 10 is configured for maximum allowable pressure in the hydropneumatic accumulator. The use of the valve 10 is not necessary. The second three-way three-position valve flow 9 can be replaced with three-way-off valve, which will be excluded function feed cleaning solution or water to two rows of nozzles at the same time. In the control system of pump 13 provides for the use of a pressure sensor in the hydropneumatic accumulator (not shown), Manager of the pump off 5 if the preset pressure in the hydropneumatic accumulator 7. The first three-way three-position valve flow 8 can be replaced at least two independent, double-throw-off valve. One of the valves will be used for switching of the hose of submission of the solution or water from the pump 5 in hydropneumatic accumulator 7, and the second to turn on/off the supply of cleaning solution or water from the hydropneumatic accumulator 7 to the injectors. All the valves and valve have an electromagnetic drive and connected to the control unit 13 washing process. The first and second three-way three-position valves flow must be designed for a relatively large flow rate (up to 700...800 l/min), and the section of the pipelines to the injectors to match the calculated values of consumption of cleaning solution or water. Given that time alignment holes - time feed stream is 0.1...0.5 seconds, the total supply of detergent solution to the injectors relatively small. For example, in the above case, when the jet velocity of 20 m/s, the volume of cleaning solution will be approximately 1,3...6.5 liters that could be provided hydropneumatic accumulator 7 capacity, for example, 10 l In the initial state (the position of the valves and valves is shown in the drawing) of the first and second three-way three-position valves flow 8 and 9 are located in the first - source - position, three-way dip drain valve 11 is also in the original - the first position. Works declare a washing machine in the following way. After filling erasable products drum 3, introduction, user-wash program and enable the start washing running water in the tank 2 for the formation of a washing solution. This device control 13 washing machine is controlled by the level of the cleaning solution in the tank, and when you reach a certain level of filling of the tank 2 the flow of water stops. At the same time or with some (20...30 C) time delay with the beginning of the filling of the tank 2 wash solution pump is switched on 5 and filled hydropneumatic accumulator 7. This controls the pressure in the hydropneumatic accumulator. When the preset pressure in the hydropneumatic accumulator produced command to shut down the pump and the team for translation distributor flow 8 in the second position. The yield of the hydropneumatic accumulator 7 and exit pump 5 closed. After achieving a given level of the cleaning solution in the tank 2 are cyclic rotational motion of a drum, "Laundry". In accordance with the given program washing alternate command: spin 3 in the forward direction (for example, counterclockwise rotation), pause in the rotation and then rotating in the opposite direction (in this example - clockwise rotation). These commands are generated by the control system 13, and the number of cycles reversal is determined by the selected program washing. Simultaneously with the beginning of rotation of the drum 3 control system 13 begins to poll the sensor position of rotation of the drum in the tank (not shown). In the beginning of combining the necessary holes in the rotating drum with holes jet injectors management system 13 generates the command of the first three-way three-position valve flow 8 in third position, while the water flow from the hydropneumatic accumulator 7 is served in the left number of nozzles and is the impact of the jets to wash product. By default (without control power voltage) second three-way three-position valve and 9 is in a state of submission of a solution in the left number of injectors (in the drawing). The duration of the spray on erasable products is determined by the frequency of drum rotation radius of the drum and long oval openings in the shell. Consequently, stop flow of liquid from the hydropneumatic accumulator 7 to the injectors 6, and the device management washing process goes into standby mode, the next align the holes nozzles and dryer. This controls the pressure in the hydropneumatic accumulator, and a decrease to very minimum values pump is switched on and the first three-way three-position valve flow 8 translated in the first position. So, the washing process is repeated in accordance with the programme of washing prior to reverse the direction of rotation of the drum. After establishing control system 13 teams reverse simultaneously switch the direction of rotation of the drum is produced by the team of the translation of the second three-way three-position valve flow 9 in the second position. This switch is accompanied by a redirection of the flow in the right lane jets (adopted scheme and the inclusion of a control regime align the holes on the opposite side of the tank 2 (drawing on the right). All control commands and three-way switch three-position valve flow 8 for the supply of the washing solution in the right nozzle identical to the above submission process of the washing solution left to the injectors. The process is repeated cyclically in accordance with the program of the washing process. At the end of the program "wash" management system 13 commands on the three-way switching-off valve discharge 11 in the second position and a pump for liquid removal in sewage 12, simultaneously removes fluid from the hydropneumatic accumulator. The procedure of rinsing is also performed according to above algorithm. The third position of the second three-way three-position valve flow 9 is used when you want the simultaneous operation of two rows of nozzles to hydrate and pre-treatment erasable products. This way of management schemes washing machine drum-type type with jet impact on erasable the product shows the feasibility of a new hallmark of the claimed washing machines - an introduction to the design of the washing machine the hydropneumatic accumulator and at least one valve flow. The use of two flow distributors and switch valve, as shown in the example, provides useful option with the improved features of the proposed washing machines according to the description. Introduction to the design of the washing machine hydropneumatic accumulator reveals other options in the modernization of drum-type washing machine. Namely, to increase the efficiency of jet wash solution the wash and increase the efficiency of rinsing for linen and underwear treatment jets of water. In the example presented with the option of a second three-way three-position valve flow 9, the introduction of which provides hydration linen for the same purpose, as in the analogue /2/ - simultaneously from two numbers of jet injectors. At the same time, three-way three-position valve flow can be replaced with three-way-off valve, which will be excluded function feed cleaning solution or water to two rows of nozzles at the same time. There may be other patterns of use in washing machines drum-type hydropneumatic accumulator. Sources of information 1. Modern washing machines and detergents. /Naskrebaet/ BHV, S. Petersburg, arlit, 2001, str, RIS. 2. Washing machine with a top loading. Patent RU №2435884 C2, IPC D06F 21/00. Patentee: ELECTROLUX HOME PRODUCTS CORPORATION NV (BE)published: 10.12.2011. Convention priority: 24.11.2006, ER 06124769.8. Date of publication of the application: 27.05.2009. 3. Washing machine drum. Patent RU №2412289/ Lemeshko M.A., Alekhin S.N., Klimov A.P., A.A. Kalashnikov, S.A. Smirnova, Lemeshko A.M. Publ. 20.02.2011. 4 Basta T.M. Engineering hydraulics/ reference book. Ed. 2nd revised and enlarged. - M: machine-building, 1971. - S).
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