CN202247414U - Self-cleaning filter for washing machine capable of circularly washing and washing machine thereof - Google Patents

Self-cleaning filter for washing machine capable of circularly washing and washing machine thereof Download PDF

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Publication number
CN202247414U
CN202247414U CN2011202871028U CN201120287102U CN202247414U CN 202247414 U CN202247414 U CN 202247414U CN 2011202871028 U CN2011202871028 U CN 2011202871028U CN 201120287102 U CN201120287102 U CN 201120287102U CN 202247414 U CN202247414 U CN 202247414U
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China
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filter
screen pack
washing machine
screen
water
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CN2011202871028U
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Chinese (zh)
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许升
李海涛
赵新宇
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Haier Group Corp
Qingdao Haier Drum Washing Machine Co Ltd
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Abstract

The utility model discloses a self-cleaning filtering device for a washing machine capable of circularly washing. The filtering device comprises a filtering cavity and a filtering net arranged in the filtering cavity, wherein openings are arranged at opposite two ends of the filtering cavity and a water inlet and a water outlet are arranged at the two ends respectively; the filtering device can realize the filtering function by flowing washing water through the filtering net from the water inlet to the water outlet and can realize the self-cleaning function by reversely impacting the filtering net through the washing water from the water outlet to the water inlet so as to discharge water. The filtering device provided by the utility model has the self-cleaning function so that a user nearly does not need to clean the filtering device; the washing machine is filtered after being used each time so as to avoid remaining impurities mixed in lint on the filtering net. The self-cleaning filtering device inhibits the inner mildew, decay and bacteria growth, eliminates the source of secondary pollution and realizes healthy, clean and sanitary washing. Furthermore, the self-cleaning filtering device is simple in structure and low in cost, and is good for popularizing and using.

Description

A kind of self-cleaning filter and washing machine thereof of the washing machine that is used to circulate
Technical field
The utility model relates to the washing machine field, particularly a kind of self-cleaning filter and washing machine thereof of the washing machine that is used to circulate.
Background technology
Along with the continuous lifting of washing machine performance, when cleaning than obviously improving, to the also progressively increase of wear rate of clothing; Line during laundry in the water is considered also showed increased to be worth doing; The line bits that come off when going offline simultaneously much the clothes washing of bits easily, can't rinsing clean, after the final spin-drying; Most of line bits are bonded on the clothing, pollute.After drying, clothes is difficult to again clean out.The line bits filter of existing rotary drum washing machine; Have only symmetrically arranged two filter screens, it mainly is through when washing, and the current that rise in the wash bucket are rushed in the line bits in the screen pack; Receive the too low and too little restriction of filter screen water inlet of flow rate of water flow, its filter efficiency is very low.This be since washings at the impeller back blade stir down, can only get into filter from the impeller bottom and filter the back and discharge from the filter protecgulum; Because it is limited that blade is stirred strength, filtered water gets into filter and has arrived not top, discharges from filter protecgulum the latter half mostly, and upper filter part is under-utilized; Rotating during washing machine work, the water of the above segment space of impeller can not filter simultaneously in the inner core.Record through experiment, existing filter generally can only be collected about the 30%-45% of line bits foreign material, has a strong impact on the clean rate of clothing.
China application CN200610036929.5 discloses a kind of washing machine with water circulating pump, comprises the outer bucket (13) that is suspended in the casing (11), in outer bucket (13) by interior barrel (15) of outer shaft driven rotary; The drainage channel of the water in casing (11) effluxes the bucket (13) of going out; The upper reaches of the water inlet (1) of water pump (4) are communicated with outer bucket (13) inner bottom part, and the downstream of its water discharge outlet connect the pipeline (3) that leads to washing machine inner tub (15); It is characterized in that: the upper reaches of the water inlet (1) of said water pump (4) are provided with filter (2,2 '), and the filtering surface of this filter (2,2 ') is positioned at the water (flow) direction parallel position of said drainage channel.Washing machine is when washing, and water circulating pump 4 turns round simultaneously, and washings earlier through the passage entering water pump 4 of screen pack 2 along filter 7, up flow back to washing machine inner tub 15 via the pipeline 3 that connects water pump 4 downstream by outer bucket 13 again.When washing machine drainage or dehydration; Except that utilize bucket 13 toward the draining current of water discharge outlet 8 the line that screen pack 2 surface filtrations get off consider to be worth doing, outside foreign material go out and drain; Be higher than water inlet 9 like diagram because pipeline 3 up flows back to the outlet of washing machine inner tub 15, when water circulating pump 4 shut down, the water in the pipeline 3 i.e. bucket 13 outside water pump 4 flows backwards back; Reverse impact screen pack 2 improves the line bits of removing on the screen pack, the ability of foreign material.
Though above-mentioned filter can play certain line bits filtration; But because filtering surface is parallel with the water (flow) direction of drainage channel, during draining, the water screen pack of not flowing through; Almost do not have a souring to what tightly be attached to line bits on the filtering surface; And the line bits effect that only relies on the water refluence in the pipeline 3 to remove on the filter screen is not remarkable, and therefore, the line bits are difficult in time fully removal.In addition, because it adopts the plane screen pack, the line bits of collection lack a storage area, therefore are easy to cause screen pack to stop up, and influence draining.Add that screen pack is arranged on the water inlet upper reaches, also non-detachable setting can't artificial treatment, also can't play automatic cleaning action, and long-time the use is easy to cause that screen pack stops up, and bacteria breed causes a series of health concerns.
In view of this, special the utility model that proposes.
The utility model content
The purpose of the utility model is to provide a kind of filter that can realize comprehensive filtration, for realizing first purpose of the utility model, specifically adopts following technical scheme:
A kind of automatically cleaning filter of the washing machine that is used to circulate; Described filter comprises filter chamber and screen pack located therein; The both ends open that said filter chamber is relative also is provided with water inlet and delivery port respectively; Described filter is circulated to wash and realizes its filtration to the delivery port screen pack of flowing through by water inlet with washings, carries out draining from delivery port to water inlet reverse impact screen pack with washings and realizes its automatic cleaning action.
Said screen pack is three-dimensional, and the axial cross section of this three-dimensional screen pack is the trapezoidal of V-arrangement or both ends open, and wherein V-arrangement or trapezoidal big openend are towards delivery port.
Described screen pack is that two flat screen are oppositely arranged the V-arrangement filter screen that forms; Or described screen pack is the conical filtering net; Or described screen pack is the conical screen of both ends open.
Wherein preferred described screen pack is the conical filtering net that cylindrical broach shape screen pack is gathered formation apicad; Or described screen pack is the conical screen of both ends open, and wherein mesh is circular on the screen cloth.
Also be provided with the screen pack bracing or strutting arrangement in the described filter chamber, described screen pack bracing or strutting arrangement is to be arranged on screen pack bottom and/or the screen pack reinforcement on axially.
Described screen pack is a disc type plane screen pack; Described filter chamber is respectively equipped with the upper and lower screen support device that screen pack is played position-limiting action near the both sides of water inlet and delivery port; Screen pack rotatably is connected a side of lower filter screen bracing or strutting arrangement, makes it can change the folding condition of self according to water (flow) direction; The upper filter screen bracing or strutting arrangement is provided with perpendicular baffle plate, and when this baffle plate was opened screen pack, the angle of screen pack and delivery port was 45 °-60 ° to the maximum.
Described filter chamber is a cylindrical cavity, and its sidewall is provided with the cleaning window that can freely open.
Second purpose of the utility model is to provide a kind of washing machine of being located at above-mentioned filter, for realizing second purpose of the utility model, adopts following technical scheme:
A kind of washing machine of filter as stated that is provided with; Described washing machine is provided with water discharge outlet, pumping plant, filter, circulation and washes water inlet and draining valve; Described water discharge outlet is washed water inlet with filter, pumping plant, circulation successively and is linked to each other and form circulation and wash system; Described water discharge outlet links to each other with described pumping plant, described filter and draining valve successively and forms drainage system, and system is washed in circulation and drainage system switches through the control valve control system.
Described water discharge outlet is connected to form the drainage system of washing machine successively with pumping plant, filter and draining valve; Also be provided with one between water discharge outlet and the draining valve and belong to pipeline water route arranged side by side with pumping plant and filter; One end in this water route is arranged between water discharge outlet and the pumping plant; The other end is arranged between filter and the draining valve; Be provided with the inlet pipeline that circulation is washed between pumping plant and the washing machine inner tub, water discharge outlet is washed system through the circulation of described water route arranged side by side, filter, pumping plant and inlet pipeline formation washing machine successively.
Be provided with the three-way pipeline that links to each other with the washing machine drainage mouth in the outer barrel of washing machine bottom; A passage links to each other with the washing machine drainage mouth in the threeway; Another pipeline links to each other with filter, pumping plant, water inlet pipe successively and forms the inlet channel of washings, and the 3rd pipeline forms the drainage pipeline of washings successively with described pumping plant, described filter and draining valve.
Described pumping plant is the combination of a bidirectional circulating pump or two one-way pumps.
Described control valve is a triple valve or is arranged at circulation respectively and washes two check valves in system and the drainage system.
Below to combining accompanying drawing that the utility model is done further to introduce in detail.
The line bits filter of existing rotary drum washing machine; Have only symmetrically arranged two filter screens, it mainly is through when washing, and the current that rise in the wash bucket are rushed in the line bits in the screen pack; Receive the too low and too little restriction of filter screen water inlet of flow rate of water flow, its filter efficiency is very low.
The utility model provides a kind of automatically cleaning filter that is used to water circulating pump device washing machine; The internal circulation pump cooperating of this filter and washing machine; According to circulating pump 20L/ minute flow, the rotary drum washing machine of 60L capacity just can all filter the water in the bucket one time in 3 minutes; And the less interior water of laundry drum machine barrel of water has only 15L, just can all filter one time less than 1 minute.
Above-mentioned filter comprises filter chamber and screen pack located therein; The both ends open that filter chamber is relative also is provided with water inlet and delivery port respectively; Described filter is circulated to wash and realizes its filtration to the delivery port screen pack of flowing through by water inlet with washings, carries out draining from delivery port to water inlet reverse impact screen pack with washings and realizes its automatic cleaning action.Because the water inlet process of band water circulating pump device washing machine is that circulation continues, therefore, in the washing process of whole clothing, the washings filter of all can flowing through gets off the interceptions such as line bits in the water via screen pack; After washing process finished, washings oppositely flowed to water inlet by the delivery port of filter, under impact force of water flow, be attached to that line bits on the screen pack also can rinse out thereupon and the discharge machine outside.
In addition, filter and collecting effect in order to obtain better line bits, the preferred said screen pack of the utility model is three-dimensional, and the axial cross section of this three-dimensional screen pack is the trapezoidal of V-arrangement or both ends open, and wherein V-arrangement or trapezoidal big openend are towards delivery port.
The design of screen pack size can be fixed in the filter chamber with screen pack and can play maximum filtration and be as the criterion.Normally the width of three-dimensional screen pack and highly all with filter chamber in wide, high coincideing.Three-dimensional filter screen can be fixed in the filter chamber well, and simultaneously, no matter washings still are that delivery port gets into filter chamber from the water inlet of filter, and the filter of can both flowing through plays and filters or self-cleaning effect.
The described screen pack of the utility model is that two flat screen are oppositely arranged the V-arrangement filter screen that forms; Or described screen pack is the conical filtering net; Or described screen pack is the conical screen of both ends open.The mesh shape of screen pack is not limit in the utility model, any screen pack that can play the filtration of line bits all can, like the screen pack of broach shape, grid-like, circular hole or rhombus or irregular mesh.
Shown in accompanying drawing, the utility model screen pack can be oppositely arranged the V-arrangement filter screen that forms for two broach shape flat screen; Wherein the drift angle of V-arrangement filter screen is towards water inlet, and in the clothes washing process, washings continue to pass through filter; The line bits are intercepted at the surface of V-arrangement filter screen; After washing finished, washings flowed out from broach shape mesh from the bottom opening reverse impact screen pack of V-arrangement filter screen; Thereby take away the line bits that are attached on the broach shape filter screen, accomplish washing.
As a kind of preferred version of the utility model, described screen pack is the conical filtering net that cylindrical broach shape screen pack is gathered formation apicad.The axial cross section of this screen pack is a V-type, and the mesh of broach shape helps the quick circulation of water, the good filtration of getting up again simultaneously.This conical filtering net mesh can also be circular hole or square, diamond hole.The size design of mesh can be decided according to concrete condition.
In addition, screen pack can also be the conical screen of both ends open, this taper screen pack upper and lower opening, and axial cross section is the trapezoidal of both ends open.The filter screen advantage of this structure is that little opening is also arranged at its top, therefore, has the fraction current directly to get into or discharge filter without the filtration of conical screen.Nonetheless, wash because washing machine is circulation, therefore, washings can continue the filter of flowing through, and can not have much impact to the filter effect of conical screen.And helping washings, passes through fast the little opening on top.The mesh of this conical screen is preferably circle, forms the screen cloth of band circular hole.
In the above-mentioned embodiment, all also the screen pack bracing or strutting arrangement can be set in the filter chamber, described screen pack bracing or strutting arrangement is to be arranged on screen pack bottom and/or the screen pack reinforcement on axially.As be located at the circular fixture in conical screen bottom, and the perpendicular muscle of screen pack on axially.The effect of screen pack bracing or strutting arrangement is to keep the stability of filter screen structure.Those skilled in the art can design the structure of filtering bracing or strutting arrangement as the case may be.
Another kind of embodiment as the utility model; Described screen pack can also be disc type plane screen pack; At this moment; Filter chamber is respectively equipped with the upper and lower screen support device that screen pack is played position-limiting action near the both sides of water inlet and delivery port, screen pack with rotary type be connected a side of lower filter screen bracing or strutting arrangement, make it can change the folding condition of self according to water (flow) direction; The upper filter screen bracing or strutting arrangement is provided with perpendicular baffle plate, and when this baffle plate was opened screen pack, the angle of screen pack and lower filter screen bracing or strutting arrangement was 45 °-60 ° to the maximum.
Filter chamber described in the utility model is a cylindrical cavity, and its sidewall is provided with the cleaning window that can freely open.This cleaning window can be the elongated end of filter chamber sidewall, and this elongated end is provided with and its enclosing cover to be threaded.
The utility model also provides a kind of washing machine that above-mentioned automatically cleaning filter is housed; Shown in accompanying drawing 1; The described washing machine of the utility model comprises outer bucket, is arranged at rotating interior bucket in the outer bucket; Be provided with the three-way pipeline that links to each other with the washing machine drainage mouth at outer barrel bottom; A passage links to each other with the washing machine drainage mouth in the threeway, and another pipeline links to each other with filter, pumping plant, water inlet pipe successively and forms the inlet channel of washings, and the 3rd pipeline forms the drainage pipeline of washings successively with described pumping plant, described filter and draining valve.
The utility model preferably is provided with the threeway selector valve in the three-way pipeline intersection at washing machine drainage mouth place, and the threeway selector valve can select to open different directions during with draining at circulated sprinkling lets water pass through.
As another embodiment of the utility model, shown in accompanying drawing 2, replace the threeway selector valve at three-way pipeline place, check valve is set to control the single flow direction of washings respectively at an end of inlet channel of stating and the contiguous threeway of drainage pipeline.
Above-mentioned pumping plant is preferably bidirectional circulating pump; When washing procedure of washing machine begins and start spray function; Bidirectional circulating pump is fetched water to right-hand; The water that the washing machine drainage mouth is discharged passes through filter again through check valve shown in the figure, and line bits and solid matter in the washings are remained in the filter chamber.
As another embodiment of the utility model, can adopt two one-way pumps to be used in combination and replace bidirectional circulating pump.Keep one of them one-way pump to close in the washing course of washing machine, move washings that another one-way pump will discharge from the washing machine drainage mouth through the inlet channel pump to inner tank of washing machine; After washing finishes, then close the one-way pump on the water direction into, use the one-way pump on the drainage direction that the washing water pump device is gone out washing machine.
After washing finishes; The washing machine master controller can be opened draining valve; Controlling bidirectional circulating pump simultaneously fetches water left; The washings that the washing machine drainage mouth is discharged are through another check valve, and the bidirectional circulating pump of flowing through gets into filter, consider the line that retains in the filter to be worth doing simultaneously and solid impurity together outside the drainpipe expelling tube.
The filter of the utility model possesses self-cleaning function, and the user spends the cleaning filter hardly, and uses once and filter once, has avoided impurity that the line bits are mingled with in the filter screen purpose.In mouldy, rotten, breed bacteria, the washing of healthy sanitation and hygiene has been realized in the source of having eliminated secondary pollution.In addition, the utility model is simple in structure, and production cost is low, helps promoting the use of.
Description of drawings
The structural representation of Fig. 1 the utility model washing machine
The structural representation of Fig. 2 the utility model washing machine
The structural representation of Fig. 3-1 the utility model filter
The left view of Fig. 3-2 the utility model filter
Fig. 3-3 is that the A-A of Fig. 3-2 is to cutaway view
The structural representation of Fig. 4-1 the utility model filter
Fig. 4-2 is that the A-A of Fig. 4-1 is to cutaway view
The structural representation of Fig. 5 the utility model screen pack
The main element explanation
1 inner core, 2 urceolus, 3 check valves, 4 check valves, 5 filters, 6 pumping plants, 7 draining valves, 8 water inlet pipes, 9 outlet pipes, 10 filter chambers, 11 screen packs, 12 screen packs, 13 screen packs, 14 rotating shafts, 15 cleaning windows, 16 triple valves, 17 water inlets, 18 delivery ports, 19 screen support devices, 20 upper filter screen bracing or strutting arrangements, 21 lower filter screen bracing or strutting arrangements, 22 baffle plates
The specific embodiment
Below in conjunction with embodiment the utility model is carried out further detailed explanation.
Embodiment 1
Being used to shown in Fig. 3-1,3-2,3-3 the circulate automatically cleaning filter 5 of washing machine; Comprise filter chamber 10 and screen pack 11 located therein; Filter chamber 10 relative both ends opens also are provided with water inlet 17 and delivery port 18 respectively; This filter 5 is circulated to wash and realizes its filtration to delivery port 18 screen pack 11 of flowing through by water inlet 17 with washings, carries out draining from delivery port 18 to water inlet 17 reverse impact screen packs 11 with washings and realizes its automatic cleaning action.
Filter chamber 10 is a cylindrical cavity in the present embodiment, and its sidewall is provided with the cleaning window 15 that can freely open.Screen pack 11 is that two broach shape flat screen are oppositely arranged the V-arrangement filter screen that forms.Also be provided with screen pack bracing or strutting arrangement 19 in the filter chamber 10, this screen pack bracing or strutting arrangement 19 is for being arranged on screen pack bottom and the reinforcement of screen pack on axial.
Embodiment 2
Compare with embodiment 1, distinctive points only is that the structure of screen pack in the present embodiment is different.
Shown in Fig. 4-1,4-2, screen pack 12 is gathered the conical filtering net of formation apicad in the present embodiment for cylindrical broach shape screen pack.The base diameter of this conical filtering net 12 equates that with the internal diameter of filter chamber 10 top of screen pack 12 is near water inlet 17, and the bottom surface is towards delivery port 18.
Embodiment 3
Compare with embodiment 2, distinctive points only is, in the present embodiment, screen pack 12 axially on reinforcement is not set.
Embodiment 4
Compare with embodiment 1, distinctive points only is that the structure of screen pack in the present embodiment is different.Screen pack is that axial cross section is the trapezoidal conical screen of both ends open in the present embodiment, and wherein mesh is circular on the conical screen.
Embodiment 4
Compare with embodiment 1, distinctive points only is that the structure of screen pack in the present embodiment is different.And the sidewall of filter chamber 10 is not provided with cleaning window 15 in the present embodiment.
As shown in Figure 5; Screen pack 13 is a disc type plane screen pack in the present embodiment; Wherein filter chamber 10 is respectively equipped with the upper and lower screen support device that screen pack is played position-limiting action near the both sides of water inlet 17 and delivery port 18; Following bracing or strutting arrangement 21 is provided with rotating shaft 14 near a jiao of filter chamber wall, and screen pack 13 rotatably is connected in the rotating shaft 14, makes screen pack 13 can change the folding condition of self according to water (flow) direction.The upper filter screen support is adorned 20 and is provided with perpendicular baffle plate 22, and when this baffle plate 22 was opened screen pack 13, the angle of screen pack and delivery port was 45 ° to the maximum.
Embodiment 5
Compare with embodiment 2, distinctive points only is that screen pack is the wafer-type screen pack that is fixed in the filter chamber 11 in the present embodiment, and this screen pack and filter chamber are isometrical, and washings can fully be filtered.。
Embodiment 6
Washing machine as shown in Figure 1; This washing machine is provided with water discharge outlet, pumping plant 6, filter 5, circulates and wash water inlet and draining valve 7; Described water discharge outlet is washed water inlet with filter 5, pumping plant 6, circulation successively and is linked to each other and form the system of washing that circulates; Water discharge outlet links to each other with pumping plant 6, filter 5 and draining valve 7 successively and forms drainage system, and system is washed in circulation and drainage system switches through the control valve control system.
Particularly; Bucket 2 bottoms are provided with the three-way pipeline that links to each other with the washing machine drainage mouth outside; A passage links to each other with the washing machine drainage mouth in the threeway; Another pipeline links to each other with filter 5, pumping plant 6, water inlet pipe 8 successively and forms the inlet channel of washings, and the 3rd pipeline forms the drainage pipeline of washings successively with described pumping plant 6, described filter 5 and draining valve 7.Wherein pumping plant 6 can be the combination of a bidirectional circulating pump or two one-way pumps.In the three-way pipeline with the folding condition of each pipeline of triple valve 16 control.
Embodiment 7
The distinctive points of present embodiment and embodiment 6 only is, the triple valve 16 that present embodiment replaces among the embodiment 6 with check valve 3 and the check valve 4 that is arranged at respectively in inlet channel and the drainage pipeline.
Embodiment in the foregoing description can further make up or replace; And embodiment describes the preferred embodiment of the utility model; Be not that design and scope to the utility model limits; Under the prerequisite that does not break away from the utility model design philosophy, the various changes and modifications that the professional and technical personnel makes the technical scheme of the utility model in this area all belong to the protection domain of the utility model.

Claims (10)

1. the automatically cleaning filter of the washing machine that is used to circulate; It is characterized in that: described filter comprises filter chamber and screen pack located therein; The both ends open that said filter chamber is relative also is provided with water inlet and delivery port respectively; Described filter is circulated to wash and realizes its filtration to the delivery port screen pack of flowing through by water inlet with washings, carries out draining from delivery port to water inlet reverse impact screen pack with washings and realizes its automatic cleaning action.
2. filter according to claim 1 is characterized in that: said screen pack is three-dimensional, and the axial cross section of this three-dimensional screen pack is the trapezoidal of V-arrangement or both ends open, and wherein V-arrangement or trapezoidal big openend are towards delivery port.
3. filter according to claim 1 and 2 is characterized in that: described screen pack is that two flat screen are oppositely arranged the V-arrangement filter screen that forms; Or described screen pack is the conical filtering net; Or described screen pack is the conical screen of both ends open.
4. filter according to claim 2 is characterized in that: also be provided with the screen pack bracing or strutting arrangement in the described filter chamber, described screen pack bracing or strutting arrangement is to be arranged on screen pack bottom and/or the screen pack reinforcement on axially.
5. filter according to claim 1; It is characterized in that: described screen pack is a disc type plane screen pack; Described filter chamber is respectively equipped with the upper and lower screen support device that screen pack is played position-limiting action near the both sides of water inlet and delivery port; Screen pack rotatably is connected a side of lower filter screen bracing or strutting arrangement, makes it can change the folding condition of self according to water (flow) direction; The upper filter screen bracing or strutting arrangement is provided with perpendicular baffle plate, and when this baffle plate was opened screen pack, the angle of screen pack and delivery port was 45 °-60 ° to the maximum.
6. filter according to claim 1 is characterized in that: described filter chamber is a cylindrical cavity, and its sidewall is provided with the cleaning window that can freely open.
7. one kind is provided with the washing machine of filter according to claim 1; It is characterized in that: described washing machine is provided with water discharge outlet, pumping plant, filter, circulation and washes water inlet and draining valve; Described water discharge outlet is washed water inlet with filter, pumping plant, circulation successively and is linked to each other and form circulation and wash system; Described water discharge outlet links to each other with described pumping plant, described filter and draining valve successively and forms drainage system, and system is washed in circulation and drainage system switches through the control valve control system.
8. washing machine according to claim 8; It is characterized in that: be provided with the three-way pipeline that links to each other with the washing machine drainage mouth in the outer barrel of washing machine bottom; A passage links to each other with the washing machine drainage mouth in the threeway; Another pipeline links to each other with filter, pumping plant, water inlet pipe successively and forms the inlet channel of washings, and the 3rd pipeline forms the drainage pipeline of washings successively with described pumping plant, described filter and draining valve.
9. according to claim 7 or 8 described washing machines, it is characterized in that: described pumping plant is the combination of a bidirectional circulating pump or two one-way pumps.
10. according to claim 7 or 8 described washing machines, it is characterized in that: described control valve is a triple valve or is arranged at circulation respectively and washes two check valves in system and the drainage system.
CN2011202871028U 2011-08-09 2011-08-09 Self-cleaning filter for washing machine capable of circularly washing and washing machine thereof Expired - Fee Related CN202247414U (en)

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CN2011202871028U CN202247414U (en) 2011-08-09 2011-08-09 Self-cleaning filter for washing machine capable of circularly washing and washing machine thereof

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Application Number Priority Date Filing Date Title
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