CN116548885A - Washing system and dish washer - Google Patents

Abstract

The invention relates to the technical field of dish washers, and discloses a washing system and a dish washer, wherein the washing system comprises: a washing chamber; the water storage cup is arranged below the washing cavity and communicated with the washing cavity, and is provided with a first water outlet; the filter is arranged outside the water storage cup, the filter comprises a shell and a filter screen arranged in the shell, the shell is provided with a first water inlet, a second water inlet, a filtering water outlet and a water outlet, the first water inlet and the water outlet are positioned on one side of the filter screen, the filtering water outlet and the second water inlet are positioned on the other side of the filter screen, the first water inlet is connected with the first water outlet through a connecting pipe, the connecting pipe is provided with a first water pump, the second water inlet is suitable for being communicated with a water inlet pipe, the filtering water outlet is connected with a washing cavity through a water return pipe, the water outlet is connected with a sewage drainage pipe, and a sewage drainage pipe and/or a water outlet are provided with a sewage discharge control valve. The invention can clean the filter screen easily without disassembly, and can improve the user experience.

Description

Washing system and dish washer

Technical Field

The invention relates to the field of dish washers, in particular to a washing system and a dish washer.

Background

The washing process of the household dish washer is to pump out the water in the water storage cup by using a water pump and spray the water onto tableware by using a spray arm, and the water flows back into the water storage cup again for circular washing. In order to avoid food residues to circulate along with the washing water, a filter is usually arranged between the bottom of the liner and the water storage cup, the filter comprises a plane filter and a micro-filter for filtering residues with different sizes, and the micro-filter can filter micro-residues to prevent the micro-residues from causing secondary pollution to tableware along with the washing water circulation and influencing the washing effect. After the washing is finished, the filter needs to be manually detached and cleaned by a user, the flat filter is used for filtering large-volume residues, and the micro-filter is used for filtering tiny residues, so that the micro-filter is difficult to clean compared with the flat filter, the user experience is greatly discounted, and if the flat filter is not cleaned, bacteria microorganisms are easy to breed due to long-term being in a closed environment of the dish washer, bad smell can be generated, and the body health of the user can be influenced.

Disclosure of Invention

In view of the above, the present invention provides a washing system and a dishwasher to solve the problem of inconvenient cleaning of the filter.

In a first aspect, the present invention provides a washing system comprising: a washing chamber; the water storage cup is arranged below the washing cavity and communicated with the washing cavity, and is provided with a first water outlet; the filter is arranged outside the water storage cup and comprises a shell and a filter screen arranged in the shell, the shell is provided with a first water inlet, a second water inlet, a filtering water outlet and a water outlet, the first water inlet and the water outlet are positioned on one side of the filter screen, the filtering water outlet and the second water inlet are positioned on the other side of the filter screen, the first water inlet is connected with the first water outlet through a connecting pipe, the connecting pipe is provided with a first water pump, the second water inlet is suitable for being communicated with a water inlet pipe, the filtering water outlet is connected with the washing cavity through a water return pipe, the water outlet is connected with a sewage drain pipe, and a sewage drain control valve is arranged at the position of the sewage drain pipe and/or the water outlet;

the water storage cup, the first water inlet, the filter screen, the filter water outlet and the washing cavity are sequentially communicated to form a filter channel, and the water inlet pipe, the second water inlet, the filter screen and the water outlet are sequentially communicated to form a back flushing channel.

When the washing system is in a washing stage, the first water pump works, the sewage discharge control valve is closed, the second water inlet is not filled with water, water after tableware washing in the washing cavity flows into the water storage cup, then flows out from the first water outlet under the action of the first water pump, enters the filter cavity in the filter along the connecting pipe, residues in the water are intercepted by the filter screen when passing through the filter screen, and the water filtered by the filter screen can flow out from the filter water outlet and then enter the washing cavity again to wash the tableware, so that the secondary pollution of the residues to the tableware along with washing water circulation is prevented, and the washing effect is influenced. After the washing is finished, the first water pump stops working, the pollution discharge control valve is opened, water enters the shell from the second water inlet to wash the filter screen, and residues fall off the filter screen and are discharged from the water outlet along with the wash water. Therefore, the washing system can easily clean the filter screen without disassembling the filter screen, and the user experience can be improved.

In an alternative embodiment, the second water inlet is in communication with the water inlet pipe via a flushing water pipe, and a flushing control valve is provided at the flushing water pipe and/or the second water inlet.

In an alternative implementation mode, the water inlet pipe is communicated with the water storage cup through a water inlet branch pipe, a washing water inlet control valve is arranged on the water inlet branch pipe, and a whole machine water inlet control valve is arranged on the water inlet pipe.

In an alternative embodiment, the return water pipe is provided with a return water control valve.

In an alternative embodiment, the washing system further includes a controller, where the controller can obtain the current of the first water pump, and can control the backwater control valve and the first water pump to be closed, the whole machine water inlet control valve to be opened, the flushing control valve to be opened, and the blowdown control valve to be opened again after a preset time is allowed for the backwater control valve to be opened, the first water pump to be opened, the whole machine water inlet control valve to be closed, the blowdown control valve to be closed, and the flushing control valve to be closed when the current of the first water pump is increased.

When the current of the first water pump increases, the residues intercepted on the filter screen are more, most of the surface of the filter screen is covered, so that the first water pump needs larger current to drive water flow, at the moment, the backwater control valve is controlled to be closed, the first water pump is closed, the whole machine water inlet control valve is opened, the flushing control valve is opened, the sewage disposal control valve is opened for preset time, at the moment, water enters the filter screen from the second water inlet after passing through the water inlet pipe and the flushing pipe, the residues fall off from the filter screen and are discharged from the water outlet along with flushing water, then the backwater control valve is opened again, the first water pump is opened, the whole machine water inlet control valve is closed, the sewage disposal control valve is closed, the flushing control valve is closed, and cyclic washing is carried out, and the water quantity in the filter is ensured to be basically unchanged, namely the water quantity in the washing cavity is maintained to be basically unchanged due to the consistency of the water entering from the water inlet pipe and the water outlet.

In an alternative embodiment, the sewer pipe is further provided with a non-return valve.

In an alternative embodiment, the washing system further comprises a planar filter disposed at the bottom of the washing chamber and covering the top inlet of the water storage cup.

In an alternative embodiment, the water storage cup is further provided with a second water outlet, a spray arm is arranged in the washing cavity, the second water outlet is communicated with the spray arm through a spray pipe, and the spray pipe is provided with a second water pump.

In a second aspect, the invention also provides a dishwasher comprising the washing system described above.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a washing system according to an embodiment of the present invention;

fig. 2 is an enlarged view of the filter of fig. 1.

Reference numerals illustrate:

1. a filter; 101. a housing; 102. a filter screen; 103. a first water inlet; 104. a second water inlet; 105. filtering the water outlet; 106. a water outlet; 107. a filter chamber; 2. a washing chamber; 3. a water storage cup; 301. a top inlet; 4. a connecting pipe; 5. a first water pump; 6. a water return pipe; 7. a backwater control valve; 8. a sewage drain pipe; 9. a blowdown control valve; 10. a flushing water pipe; 11. a water inlet pipe; 12. a flush control valve; 13. a water inlet branch pipe; 14. a washing water inlet control valve; 15. a complete machine water inlet control valve; 16. a respirator; 17. a check valve; 18. a planar filter; 19. a spray arm; 20. a shower pipe; 21. and a second water pump.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

An embodiment of the present invention is described below with reference to fig. 1.

The washing process of the household dish washer is to pump out the water in the water storage cup by using a water pump and spray the water onto tableware by using a spray arm, and the water flows back into the water storage cup again for circular washing. In order to avoid food residues to circulate along with the washing water, a filter is usually arranged between the bottom of the liner and the water storage cup, the filter comprises a plane filter and a micro-filter for filtering residues with different sizes, and the micro-filter can filter micro-residues to prevent the micro-residues from causing secondary pollution to tableware along with the washing water circulation and influencing the washing effect. After the washing is finished, the filter needs to be manually detached and cleaned by a user, the flat filter is used for filtering large-volume residues, and the micro-filter is used for filtering tiny residues, so that the micro-filter is difficult to clean compared with the flat filter, the user experience is greatly discounted, and if the flat filter is not cleaned, bacteria microorganisms are easy to breed due to long-term being in a closed environment of the dish washer, bad smell can be generated, and the body health of the user can be influenced.

It should be noted that, in fig. 1 and 2, black dots on the filter screen 102 represent residues filtered thereby.

According to an embodiment of the present invention, in one aspect, a washing system is provided.

In one embodiment, the washing system comprises a washing chamber 2, a water storage cup 3 and a filter 1. The water storage cup 3 is arranged below the washing cavity 2 and is communicated with the washing cavity 2, and the water storage cup 3 is provided with a first water outlet; the filter 1 is arranged outside the water storage cup 3.

The filter comprises a shell 101 and a filter screen 102 arranged in the shell 101, wherein the shell 101 is provided with a first water inlet 103, a second water inlet 104, a filter water outlet 105 and a water outlet 106, the first water inlet 103 and the water outlet 106 are positioned on one side of the filter screen 102, the filter water outlet 105 and the second water inlet 104 are positioned on the other side of the filter screen 102, the first water inlet 103 is connected with the first water outlet through a connecting pipe 4, the connecting pipe 4 is provided with a first water pump 5, the second water inlet 104 is suitable for being communicated with a water inlet pipe 11, the filter water outlet 105 is connected with a washing cavity 2 through a water return pipe 6, the water outlet 106 is connected with a sewage drain pipe 8, and a sewage drain control valve 9 is arranged at the position of the sewage drain pipe 8 and/or the water outlet 106.

The water storage cup 3, the first water inlet 103, the filter screen 102, the filter water outlet 105 and the washing cavity 2 are sequentially communicated to form a filter channel, and the water inlet pipe 11, the second water inlet 104, the filter screen 102 and the water outlet 106 are sequentially communicated to form a back flushing channel.

In this embodiment, when the washing system is in the washing stage, the first water pump 5 is operated, the blowdown control valve 9 is closed, the second water inlet 104 is not fed with water, the water after washing tableware in the washing cavity 2 flows into the water storage cup 3, then flows out from the first water outlet under the action of the first water pump 5, enters the filter cavity 107 in the filter 1 along the connecting pipe 4, and when the residues in the water pass through the filter screen 102, the residues in the water are intercepted by the filter screen 102, and the water filtered by the filter screen 102 can flow out from the filter water outlet 105 and then enter the washing cavity 2 again to wash the tableware, so that the residues are prevented from causing secondary pollution to the tableware along with washing water circulation, and the washing effect is affected. After the washing is completed, the first water pump 5 stops operating, the drain control valve 9 is opened, water is introduced into the casing 101 from the second water inlet 104 to wash the filter screen 102, and residues fall off the filter screen 102 and are discharged from the drain port 106 together with the wash water. Therefore, the washing system can easily clean the filter screen 102, and the filter screen 102 does not need to be detached, so that the user experience can be improved.

On the basis of the above-described embodiments, in a preferred embodiment, the second water inlet 104 communicates with the water inlet pipe 11 via the flushing water pipe 10, and a flushing control valve 12 is provided at the flushing water pipe 10 and/or the second water inlet 104. In this embodiment, by providing the flush control valve 12, the flush control valve 12 is opened when the filter screen 102 needs to be cleaned. In an alternative embodiment, the flushing control valve 12 may not be provided, and the second water inlet 104 may be connected to a faucet, and the filter screen 102 may be flushed by opening the faucet.

In particular, in one embodiment, a flush control valve 12 is provided to the flush water tube 10.

On the basis of the above embodiment, in a preferred embodiment, the water inlet pipe 11 is communicated with the water storage cup 3 through the water inlet branch pipe 13, the water inlet branch pipe 13 is provided with a washing water inlet control valve 14, and the water inlet pipe 11 is provided with a complete machine water inlet control valve 15. In this embodiment, the same water inlet pipe 11 is communicated with the water storage cup 3 and the filter 1 at the same time, and the water path layout is simple and compact. Of course, in other alternative embodiments, an additional line may be provided for supplying water to the water storage cup 3. In the water inlet stage, the flushing control valve 12 is closed, and the whole machine water inlet control valve 15 and the washing water inlet control valve 14 are opened; in the washing stage, the whole machine water inlet control valve 15, the washing water inlet control valve 14 and the flushing control valve 12 are all closed; after the washing is finished, the whole machine water inlet control valve 15 and the flushing control valve 12 are opened, and the washing water inlet control valve 14 is closed.

More specifically, the water inlet pipe 11 is communicated with the breather 16 through the water inlet branch pipe 13, and the breather 16 is communicated with the water storage cup 3.

In addition to the above embodiments, in a preferred embodiment, the return water pipe 6 is provided with a return water control valve 7. In the embodiment, by arranging the backwater control valve 7, the backwater control valve 7 is opened in the washing stage, and the washing water filtered by the filter screen 102 enters the washing cavity 2 again through the backwater pipe 6; after the washing is finished, the backwater control valve 7 is closed, so that the flushing water for flushing the filter screen 102 can be prevented from entering the backwater pipe 6. Of course, in other alternative embodiments, it is contemplated that the return water control valve 7 may not be provided.

On the basis of the above embodiment, in a preferred embodiment, the washing system further includes a controller capable of acquiring the current of the first water pump 5 and controlling the backwater control valve 7 and the first water pump 5 to be closed, the whole water inlet control valve 15 to be opened, the flushing control valve 12 to be opened, the blowdown control valve 9 to be opened for a preset time, and then, opening the backwater control valve 7, the first water pump 5 to be opened, the whole water inlet control valve 15 to be closed, the blowdown control valve 9 to be closed, and the flushing control valve 12 to be closed when the current of the first water pump 5 is increased.

In this embodiment, when the current of the first water pump 5 increases, it means that more residues are intercepted on the filter screen 102, and most of the surface of the filter screen 102 is covered, so that the first water pump 5 needs a larger current to drive the water flow, at this time, the water return control valve 7 and the first water pump 5 are controlled to be closed, the whole water inlet control valve 15 is opened, the flushing control valve 12 is opened, the pollution discharge control valve 9 is opened for a preset time, at this time, water enters the housing 101 from the second water inlet 104 after passing through the water inlet pipe 11 and the flushing water pipe 10 to flush the filter screen 102, the residues fall off from the filter screen 102 and are discharged along with the flushing water from the water outlet 106, and then the water return control valve 7 is opened again, the first water pump 5 is opened, the whole water inlet control valve 15 is closed, the pollution discharge control valve 9 is closed, the flushing control valve 12 is closed, and the circulating washing is performed, and the water amount in the filter 1 is ensured to be substantially unchanged, i.e. the water amount in the washing chamber 2 is maintained to be substantially unchanged.

It should be noted that the preset time may be 1 minute or less than 1 minute.

In addition to the above embodiments, in a preferred embodiment the sewer pipe 8 is also provided with a non-return valve 17. In this embodiment, by providing the check valve 17 in the drain pipe 8, backflow during the process of discharging the washing water and the residue can be avoided.

On the basis of the above embodiments, in a preferred embodiment, the washing system further comprises a planar filter 18, provided at the bottom of the washing chamber 2 and covering the top inlet 301 of the water storage cup 3. In this embodiment, the flat filter 18 can filter out larger debris, preventing the larger debris from entering the water storage cup 3 and causing the waterway to be blocked.

The black dots on the flat filter 18 in fig. 1 represent the filtered residues thereof.

On the basis of the above embodiment, in a preferred embodiment, the water storage cup 3 is further provided with a second water outlet, the washing chamber 2 is provided with a spray arm 19, the second water outlet is communicated with the spray arm 19 through a spray pipe 20, and the spray pipe 20 is provided with a second water pump 21. In this embodiment, the second water pump 21 is operated to pump the water filtered by the flat filter 18 and introduced into the water storage cup 3 into the washing chamber 2 again for spray washing.

According to an embodiment of the present invention, in another aspect, there is provided a dishwasher including the above-described washing system.

The dishwasher works as follows:

and (3) water inlet stage: the whole machine water inlet control valve 15 and the washing water inlet control valve 14 are opened, the flushing control valve 12, the backwater control valve 7 and the pollution discharge control valve 9 are closed, and tap water enters the water storage cup 3 from the water inlet pipe 11 through the breather 16.

Washing: the whole machine water inlet control valve 15 and the washing water inlet control valve 14 are closed, the second water pump 21 operates to spray, large-volume residues are blocked by the plane filter 18, small residues enter the water storage cup 3, meanwhile, the first water pump 5 operates, the water return control valve 7 is opened, the pollution discharge control valve 9 and the flushing control valve 12 are kept closed, water with the small residues in the water storage cup 3 enters the filter cavity 107 through the circulating pollution discharge pump and the connecting pipe 4, the small residues are blocked by the filter screen 102, and water without impurities returns to the whole machine washing cavity 2 through the filter screen 102 and the water return pipe 6. The circulating filtration system always keeps running in the whole washing process, so that small residues in the washing water can be ensured to be completely trapped on the filter screen 102.

And (3) a drainage stage: the first water pump 5 keeps running, the second water pump 21 stops running, the washing water inlet control valve 14 keeps closing, the water return control valve 7 closes, the whole machine flushing control valve 12 and the sewage control valve 9 open, the water pressure of tap water flushes from the back of the filter screen 102 through the flushing water pipe 10, small residues trapped are flushed down, and the small residues are discharged together with sewage through the sewage pipe 8; after draining for a period of time, the whole machine water inlet control valve 15 and the flushing control valve 12 are closed, the backwater control valve 7 is opened, and the residual water in the backwater pipe 6 flows back to the filter cavity 107 and is discharged together with sewage.

Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.

Claims (9)

1. A washing system, comprising:

a washing chamber (2);

the water storage cup (3) is arranged below the washing cavity (2) and is communicated with the washing cavity (2), and the water storage cup (3) is provided with a first water outlet;

the filter (1) is arranged outside the water storage cup (3) and comprises a shell (101) and a filter screen (102) arranged in the shell (101), the shell (101) is provided with a first water inlet (103), a second water inlet (104), a filter water outlet (105) and a water outlet (106), the first water inlet (103) and the water outlet (106) are positioned on one side of the filter screen (102), the filter water outlet (105) and the second water inlet (104) are positioned on the other side of the filter screen (102), the first water inlet (103) is connected with the first water outlet through a connecting pipe (4), the connecting pipe (4) is provided with a first water pump (5), the second water inlet (104) is suitable for being communicated with a water inlet pipe (11), the filter water outlet (105) is connected with the washing cavity (2) through a water return pipe (6), the water outlet (106) is connected with a sewage pipe (8), and/or a sewage drain control valve (9) is arranged at the water outlet (8) and/or the water outlet (106);

the water storage cup (3) the first water inlet (103) the filter screen (102) the filtering water outlet (105) the washing chamber (2) communicate in proper order and form the filtration passageway, inlet tube (11) the second water inlet (104) the filter screen (102) the outlet (106) communicate in proper order and form the back flush passageway.

2. The washing system according to claim 1, characterized in that the second water inlet (104) communicates with the water inlet pipe (11) via a flushing water pipe (10), a flushing control valve (12) being provided at the flushing water pipe (10) and/or the second water inlet (104).

3. The washing system according to claim 2, characterized in that the water inlet pipe (11) is communicated with the water storage cup (3) through a water inlet branch pipe (13), a washing water inlet control valve (14) is arranged on the water inlet branch pipe (13), and the water inlet pipe (11) is provided with a complete machine water inlet control valve (15).

4. A washing system according to claim 3, characterized in that the return water pipe (6) is provided with a return water control valve (7).

5. The washing system according to claim 4, further comprising a controller capable of acquiring the current of the first water pump (5) and controlling the backwater control valve (7) and the first water pump (5) to be closed, the whole machine water inlet control valve (15) to be opened, the flushing control valve (12) to be opened, the blowdown control valve (9) to be opened, the backwater control valve (7) to be opened again after a preset time is opened, the first water pump (5) to be opened, the whole machine water inlet control valve (15) to be closed, the blowdown control valve (9) to be closed, and the flushing control valve (12) to be closed when the current of the first water pump (5) is increased.

6. A washing system according to any one of claims 1-5, characterized in that the drain pipe (8) is further provided with a non-return valve (17).

7. The washing system according to any one of claims 1-5, characterized in that it further comprises a plane filter (18) provided at the bottom of the washing chamber (2) and covering the top inlet (301) of the water storage cup (3).

8. The washing system according to any one of claims 1-5, characterized in that the water storage cup (3) is further provided with a second water outlet, a spray arm (19) is arranged in the washing chamber (2), the second water outlet is communicated with the spray arm (19) through a spray pipe (20), and the spray pipe (20) is provided with a second water pump (21).

9. A dishwasher, characterized by comprising a washing system according to any one of claims 1-8.