Residual water treatment assembly and dish washing machine with same

Abstract

The residual water treatment assembly comprises a water storage bin, the bottom of the water storage bin is communicated with a residual water collecting and releasing pipe, and the other end of the residual water collecting and releasing pipe is communicated with the bottom of a water cup; the air suction end of the air pump is communicated with the inner cavity of the water storage bin at the upper part of the water storage bin through a first pipeline; the air outlet end of the air pump is communicated with the external atmosphere through a second pipeline; a gas path control valve unit is mounted on the first pipeline or / and the second pipeline; according to the structure, a, when the air pump is started, the air pump is communicated with the water storage bin to extract air from the water storage bin, and the second pipeline exhausts air to the outside atmosphere; b, when the air pump is closed, the upper part of the inner cavity of the water storage bin is isolated from external atmosphere; and c, when the water storage bin drains water into the water cup from the residual water collecting and releasing pipe, the upper part of the water storage bin is communicated with the external atmosphere. The residual amount of residual water in the water cup is greatly reduced, and pollution of the residual water in the water cup to the whole washing cavity of the dish washing machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of washing equipment, in particular to a residual water treatment component and a dishwasher. Background Art

[0002] Since the drainage pump of the existing dishwasher adopts a centrifugal impeller pump, it will cause the centrifugal impeller pump to inhale some air in the later stage of drainage (when there is less water), and the drainage efficiency will be greatly reduced. In addition, the high pipe hanging section of the dishwasher drain pipe causes the water from the drainage pump to the high pipe hanging section to be unable to be completely discharged, and finally remain inside the cavity water cup. Some existing dishwashers are equipped with a strong discharge port at the very bottom of the machine, which cannot overcome the problem of water from the hanging height to the drainage pump flowing back into the water cup and the strong discharge port being easily blocked. Some other dishwashers use a self-priming pump or a self-priming pump in conjunction with a negative pressure chamber to pump the residual water through the pump body into the drainage pipe after the hanging height. However, since the residual water will inevitably pass through the pump body, long-term use will cause pollution to the pump body, resulting in a reduction in the self-priming effect generated by the pump body, affecting the service life of the pump body. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a residual water treatment component in view of the above-mentioned technical deficiencies, wherein the residual water can be sucked into the water storage tank through the negative pressure generated by the air pump, thereby greatly reducing the remaining amount of residual water in the water cup, and can reduce the odor generated by the residual water in the water cup, reduce the growth of bacteria, and reduce the pollution of the entire washing chamber of the dishwasher by the residual water in the water cup.

[0004] The technical solution adopted by the utility model is: a residual water treatment component, which is used for treating residual water in a dishwasher, wherein the dishwasher comprises a controller, a water cup, a drainage pump, and a drainage pipe, wherein the water cup is arranged at the bottom of a washing bin of the dishwasher; the water inlet end of the drainage pump is connected to the bottom of the water cup; a residual water treatment component comprises:

[0005] A water storage tank, the bottom of which is connected to a residual water collecting and releasing pipe, the other end of which is connected to the bottom of the water cup or to the bottom of the pump chamber of the drainage pump;

[0006] An air pump, wherein the air suction end of the air pump is connected to the inner cavity of the water storage tank at the upper part of the water storage tank through a first pipeline; the air outlet end of the air pump is connected to the external atmosphere through a second pipeline; an air circuit control valve unit is installed on the first pipeline and / or the second pipeline;

[0007] The air circuit control valve unit and the air pump are both controlled by the controller and are constructed to achieve: a. when the air pump is started, the air pump is connected to the water storage tank to draw air from the water storage tank, and the second pipeline exhausts air to the external atmosphere; b. when the air pump is turned off, the upper part of the inner cavity of the water storage tank is isolated from the external atmosphere; c. when the water storage tank drains water from the residual water collection and release pipe into the water cup, the upper part of the water storage tank is connected to the external atmosphere.

[0008] As a specific optimization technical solution, the water storage tank is set at a position higher than the highest water level of the water cup. When the air pump is turned off, the air outlet and air intake ends of the air pump are in a conducting state. The air circuit control valve unit includes an electromagnetic switch valve, and the electromagnetic switch valve is installed in series in the second pipeline.

[0009] The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve opens; when the air pump is turned off and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve opens; when the air pump is turned off and the water storage tank needs to store water, the electromagnetic switch valve closes.

[0010] As a specific optimization technical solution, the water storage tank is set at a position higher than the highest water level of the water cup. When the air pump is turned off, the air outlet and air intake ends of the air pump are isolated; the air circuit control valve unit includes an electromagnetic switch valve, one end of the electromagnetic switch valve is connected in parallel with the first pipeline, and the other end is connected to the external atmosphere; the air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve is closed; when the air pump is turned off and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve is opened; when the air pump is turned off and the water storage tank needs to store water, the electromagnetic switch valve is closed.

[0011] As a specific optimization technical solution, the water storage tank is set at a position higher than the highest water level of the water cup, and when the air pump is turned off, the air outlet and air intake ends of the air pump are in a conducting state; the air circuit control valve unit includes an electromagnetic switch valve and a one-way valve; one end of the electromagnetic switch valve is connected in parallel with the first pipeline, and the other end is connected to the external atmosphere; the one-way valve is connected in series in the second pipeline and is unidirectionally conducted to the external atmosphere; the air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve is closed; when the air pump is turned off and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve is opened; when the air pump is turned off and the water storage tank needs to store water, the electromagnetic switch valve is closed.

[0012] As a specific optimization technical solution, the water storage tank is set at a position higher than the highest water level of the water cup, and the air circuit control valve unit includes a three-position three-way electromagnetic reversing valve; the first interface of the three-position three-way electromagnetic reversing valve is connected to the external atmosphere, the second interface is connected to the upstream of the first pipeline and leads to the suction end of the air pump, and the third interface is connected to the downstream of the first pipeline and leads to the water storage tank;

[0013] The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the second interface is connected to the third interface, and the first interface is closed; when the air pump closes the water storage tank and needs to drain water through the residual water collection and release pipe, the first interface is connected to the third interface, and the second interface is closed; when the air pump closes the water storage tank and needs to store water, the first interface is connected to the second interface, and the third interface is closed.

[0014] As a specific optimization technical solution, the air circuit control valve unit includes A two-position three-way electromagnetic reversing valve and B two-position three-way electromagnetic reversing valve; the A1 interface of the A two-position three-way electromagnetic reversing valve is connected to the external atmosphere, the A2 interface is connected to the upstream of the first pipeline to the air suction end of the air pump, and the A3 interface is connected to the downstream of the first pipeline to the water storage tank; the B1 interface of the B two-position three-way electromagnetic reversing valve is connected to the external atmosphere, the B2 interface is connected to the second pipeline to the air outlet end of the air pump, and the B3 interface is connected to the downstream of the first pipeline to the water storage tank;

[0015] The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the A2 interface is connected to the A3 interface, the A1 interface is closed, the B2 interface is connected to the B1 interface, and the B3 interface is closed; when the air pump closes the water storage tank and needs to drain water through the residual water collection and release pipe, the A1 interface is connected to the A2 interface, the A3 interface is closed, the B2 interface is connected to the B3 interface, and the B2 interface is closed; when the air pump closes the water storage tank and needs to store water, the A1 interface is connected to the A2 interface, the A3 interface is closed, the B1 interface is connected to the B2 interface, and the B3 interface is closed.

[0016] Another technical solution provided by the utility model is: a dishwasher, installed with a residual water treatment component described in any one of the first five specific optimization technical solutions mentioned above; when the drainage pump of the dishwasher finishes the sewage discharge work for the last time, the controller controls the air pump to turn on, and sucks the residual water in the water cup into the water storage tank, and then turns off the air pump, and isolates the upper part of the inner cavity of the water storage tank from the external atmosphere through the air path control valve unit; when the dishwasher is performing the cleaning work, the controller controls the air pump to turn off, and connects the upper part of the inner cavity of the water storage tank to the external atmosphere through the air path control valve unit, and discharges the residual water collected in the water cup during the last work into the water cup.

[0017] Another technical solution provided by the utility model is: a dishwasher, equipped with a residual water treatment component described in the sixth specific optimization technical solution; when the drainage pump of the dishwasher finishes the sewage discharge work for the last time, the controller controls the air pump to turn on, and the residual water in the water cup is sucked into the water storage tank, and then the air pump is turned off, and the upper part of the inner cavity of the water storage tank is isolated from the external atmosphere through the air path control valve unit; when the dishwasher is performing the cleaning work, the controller controls the air pump to turn on, and the upper part of the inner cavity of the water storage tank is connected to the air outlet end of the air pump through the air path control valve unit, and the residual water collected in the water cup during the last work is discharged into the water cup.

[0018] According to the technical solution recorded in the utility model, the residual water recovery mechanism is to use an air pump to create negative pressure in the water storage tank, and to suck the residual water from the bottom of the water cup into the water storage tank through the internal and external pressure difference; since the residual water after the drainage pump discharges sewage is recovered and stored, the amount of residual water is basically limited and stable, and during the recovery process of the residual water, the air pump has no direct contact with the residual water, and the oil and acidic and alkaline solvents in the residual water will not contact the air pump and the air path control valve unit, so the components have high stability and low failure rate.

[0019] The discharge mechanism of the residual water collected in the water storage tank is to select the stage of the dishwasher in the washing and spraying operation. The residual water discharged in this stage is mixed with the water cup and discharged with the primary drainage of the dishwasher. After the discharge in this stage, the secondary drainage or the final rinsing stage of the dishwasher will not be affected by the pollution. The water storage tank removes the residual water recovered from the last operation in the washing and spraying operation stage, and collects the residual water in the water cup in the final rinsing stage. The residual water will be renewed each time the dishwasher operates, and will not accumulate repeatedly, nor will it cause pollution to affect the final washing, spraying and rinsing effect of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 A schematic diagram of the structure of Embodiment 1 of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;

[0024] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of Example 5 of the present utility model.

[0026] In the figure, 1, dishwasher; 2, water cup; 3, drain pump; 4, drain pipe; 5, hanging pipe section; 6, circulation pump; 7, spray arm; 8, bowl basket; 9, water storage tank; 10, residual water collection and release pipe; 11, air pump; 12, air suction end; 13, first pipeline; 14, air outlet end; 15, second pipeline; 16, air path control valve unit; 17, A solenoid switch valve; 18, B solenoid switch valve; 19, C solenoid switch valve; 20, one-way valve; 21, three-position three-way solenoid reversing valve; 22, first interface; 23, second interface; 24, third interface; 25, A two-position three-way solenoid reversing valve; 26, B two-position three-way solenoid reversing valve; 27, A1 interface; 28, A2 interface; 29, A3 interface; 30, B1 interface; 31, B2 interface; 32, B3 interface. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, a residual water treatment component is used for treating residual water in a dishwasher. The dishwasher 1 includes a controller, a water cup 2, a drainage pump 3, and a drainage pipe 4. The water cup 2 is arranged at the bottom of the washing bin of the dishwasher 1; the water inlet end of the drainage pump 3 is connected to the bottom of the water cup 2; a residual water treatment component includes:

[0028] A water storage tank 9, the bottom of which is connected to a residual water collecting and releasing pipe 10, the other end of which is connected to the bottom of the water cup 2 or to the bottom of the pump chamber of the drainage pump 3;

[0029] An air pump 11, wherein the air suction end 12 of the air pump 11 is connected to the inner cavity of the water storage tank 9 at the upper part of the water storage tank 9 through a first pipeline 13; the air outlet end 14 of the air pump 11 is connected to the external atmosphere through a second pipeline 15; an air circuit control valve unit 16 is installed on the first pipeline 13 and / or the second pipeline 15;

[0030] The air circuit control valve unit 16 and the air pump 11 are both controlled by the controller and are constructed to achieve: a. When the air pump 11 is started, the air pump 11 is connected to the water storage tank 9 to extract air from the water storage tank 9, and the second pipeline 15 exhausts air to the external atmosphere; b. When the air pump 11 is turned off, the upper part of the inner cavity of the water storage tank 9 is isolated from the external atmosphere; c. When the water storage tank 9 drains water from the residual water collection and release pipe 10 into the water cup 2, the upper part of the water storage tank 9 is connected to the external atmosphere.

[0031] The position of the water storage tank 9 installed in the dishwasher 1 can be divided into two situations relative to the highest water level of the water cup 2. One situation is that the water storage tank 9 is installed above the highest water level of the water cup 2. In this case, when the water storage tank 9 is drained, as long as its upper part is connected to the external atmosphere, the residual water collected in the water storage tank 9 can be discharged into the water cup 2 under the action of the height difference; the other situation is that the water storage tank 9 is installed below the highest water level of the water cup 2. In this case, when the water storage tank 9 is drained, it is necessary to generate positive pressure in the water storage tank 9 through the air pump 11 to press the collected residual water out into the water cup 2.

[0032] The air pump used in the present technical solution can be divided into two categories. One is self-closing when the air pump 11 is turned off, such as a peristaltic pump or an electromagnetic pump. For a self-closing air pump, when the air pump is turned off, the air intake end 12 and the air outlet end 14 are in an isolated state. When the water storage tank 9 stores water statically, outside air will not enter the water storage tank 9 from the air outlet end 14 to cause leakage of residual water. When the water storage tank 9 needs to drain water into the water cup 2, the pipeline where the air intake end 12 or the air outlet end 14 of the air pump 11 is located is opened through the air circuit control valve unit 16 to allow outside air to enter the water storage tank 9.

[0033] The other is that when the air pump is turned off, the air pump is not self-closing, such as a diaphragm pump or a centrifugal impeller pump. When the air pump is turned off, the air pump's air intake or air outlet pipeline needs to be closed through an air path control valve unit to prevent outside air from entering the water storage tank and causing residual water leakage. The above is a summary of the technical solution, and a specific technical solution can be further provided through the following embodiments.

[0034] Example 1: Figure 2 As shown, as a specific embodiment of the above-mentioned technical solution, the water storage tank 9 is set at a position higher than the highest water level of the water cup 2, and when the air pump 11 is turned off, the air outlet end 14 and the air intake end 12 of the air pump 11 are in a conducting state, and the air circuit control valve unit 16 includes an A electromagnetic switch valve 17, and the A electromagnetic switch valve 17 is installed in series in the second pipeline 15;

[0035] The air circuit control valve unit 16 and the air pump 11 are both controlled by the logic of the controller: when the air pump 11 starts to extract air from the water storage tank 9, the A electromagnetic switch valve 17 opens; when the air pump 11 closes the water storage tank 9 and needs to drain water through the residual water collection and release pipe 10, the A electromagnetic switch valve 17 opens; when the air pump 11 closes the water storage tank 9 and needs to store water, the A electromagnetic switch valve 17 closes.

[0036] Example 2: Figure 3As shown, as a specific embodiment of the above-mentioned technical solution, the water storage tank 9 is set at a position higher than the highest water level of the water cup 2, and when the air pump 11 is turned off, the air outlet end 14 and the air intake end 12 of the air pump 11 are isolated; the air circuit control valve unit 16 includes a B electromagnetic switch valve 18, one end of the B electromagnetic switch valve 18 is connected in parallel with the first pipeline 13, and the other end is connected to the external atmosphere;

[0037] The air circuit control valve unit 16 and the air pump 11 are both controlled by the logic of the controller: when the air pump 11 starts to extract air from the water storage tank 9, the B electromagnetic switch valve 19 is closed; when the air pump 11 closes the water storage tank 9 and needs to drain water through the residual water collection and release pipe 10, the B electromagnetic switch valve 19 is opened; when the air pump 11 closes the water storage tank 9 and needs to store water, the B electromagnetic switch valve 19 is closed.

[0038] Example 3: Figure 4 As shown, as a specific embodiment of the above-mentioned technical solution, the water storage tank 9 is set at a position higher than the highest water level of the water cup 2. When the air pump 11 is turned off, the air outlet end 14 and the air intake end 12 of the air pump 11 are in a conducting state; the air circuit control valve unit 16 includes a C electromagnetic switch valve 19 and a one-way valve 20; one end of the C electromagnetic switch valve 19 is connected in parallel with the first pipeline 13, and the other end is connected to the external atmosphere; the one-way valve 20 is connected in series in the second pipeline 15 to conduct unidirectionally in the direction of the external atmosphere;

[0039] The air circuit control valve unit 16 and the air pump 11 are both controlled by the logic of the controller: when the air pump 11 starts to extract air from the water storage tank 9, the C electromagnetic switch valve 19 is closed; when the air pump 11 closes the water storage tank 9 and needs to drain water through the residual water collection and release pipe 10, the C electromagnetic switch valve 19 is opened; when the air pump 11 closes the water storage tank 9 and needs to store water, the C electromagnetic switch valve 19 is closed.

[0040] Example 4: Figure 5 As shown, as a specific embodiment of the above-mentioned technical solution, the water storage tank 9 is set at a position higher than the highest water level of the water cup 2, and the air circuit control valve unit 16 includes a three-position three-way electromagnetic reversing valve 21; the first interface 22 of the three-position three-way electromagnetic reversing valve 21 is connected to the external atmosphere, the second interface 23 is connected to the upstream of the first pipeline 13 to the suction end 12 of the air pump 11, and the third interface 24 is connected to the downstream of the first pipeline 13 to the water storage tank 9;

[0041] The air circuit control valve unit 16 and the air pump 11 are both controlled by the logic of the controller: when the air pump 11 starts to extract air from the water storage tank 9, the second interface 23 and the third interface 24 are connected, and the first interface 22 is closed; when the air pump 11 closes the water storage tank 9 and needs to drain water through the residual water collection and release pipe 10, the first interface 22 and the third interface 24 are connected, and the second interface 23 is closed; when the air pump 11 closes the water storage tank 9 and needs to store water, the first interface 22 and the second interface 23 are connected, and the third interface 24 is closed.

[0042] Example 5: Figure 6 As shown, as a specific embodiment of the above-mentioned technical solution, the air circuit control valve unit 16 includes an A two-position three-way electromagnetic reversing valve 25 and a B two-position three-way electromagnetic reversing valve 26; the A1 interface 27 of the A two-position three-way electromagnetic reversing valve 25 is connected to the external atmosphere, the A2 interface 28 is connected to the upstream of the first pipeline 13 to the suction end of the air pump 11, and the A3 interface 29 is connected to the downstream of the first pipeline 13 to the water storage tank 9; the B1 interface 30 of the B two-position three-way electromagnetic reversing valve 26 is connected to the external atmosphere, the B2 interface 31 is connected to the second pipeline 15 to the air outlet end 14 of the air pump 11, and the B3 interface 32 is connected to the downstream of the first pipeline 13 to the water storage tank 9;

[0043] The air circuit control valve unit 16 and the air pump are both controlled by the logic of the controller: when the air pump 11 starts to extract air from the water storage tank 9, the A2 interface 28 and the A3 interface 29 are connected, the A1 interface 27 is closed, the B2 interface 31 and the B1 interface 30 are connected, and the B3 interface 32 is closed; when the air pump 11 starts to pressurize the water storage tank 9 to drain water through the residual water collection and release pipe 10, the A1 interface 27 and the A2 interface 28 are connected, the A3 interface 29 is closed, the B2 interface 31 and the B3 interface 32 are connected, and the B1 interface 30 is closed; when the air pump 11 closes the water storage tank 9 and needs to store water, the A1 interface 27 and the A2 interface 28 are connected, the A3 interface 29 is closed, the B1 interface 30 and the B2 interface 31 are connected, and the B3 interface 32 is closed.

[0044] In this embodiment, the air pump 11 can realize pressurized drainage and decompressed water absorption from the water storage tank 9, and there is no requirement for the installation height of the water storage tank 9 relative to the highest water level of the water cup 2, so the installation position of the water storage tank 9 is more flexible; in addition, by using the conversion coordination of the two-position three-way electromagnetic reversing valve 25 of A and the two-position three-way electromagnetic reversing valve 26 of B, there is no requirement for whether the air pump 11 is self-closing, so this technical solution is more adaptable.

[0045] The utility model provides a dishwasher, which is equipped with a residual water treatment component described in the overview technical solution and any one of the first four embodiments; when the drainage pump 3 of the dishwasher 1 finishes the sewage discharge work, the controller controls the air pump 11 to turn on, and the residual water in the water cup 2 is sucked into the water storage tank 9, and then the air pump 11 is turned off, and the upper part of the inner cavity of the water storage tank 9 is isolated from the external atmosphere through the air path control valve unit 16; when the dishwasher 1 is performing the cleaning work, the controller controls the air pump 11 to turn off, and the upper part of the inner cavity of the water storage tank 9 is connected to the external atmosphere through the air path control valve unit 16, and the residual water collected in the water cup 2 during the last work is discharged into the water cup 2.

[0046] The utility model provides a dishwasher, which is equipped with a residual water treatment component of embodiment 5; when the drainage pump 4 of the dishwasher 1 finishes the sewage discharge work, the controller controls the air pump 11 to start, and the residual water in the water cup 2 is sucked into the water storage tank 9, and then the air pump 11 is turned off, and the upper part of the inner cavity of the water storage tank 9 is isolated from the external atmosphere through the air path control valve unit 16; when the dishwasher 1 is performing the cleaning work, the controller controls the air pump 11 to start, and the upper part of the inner cavity of the water storage tank 9 is connected to the air outlet end 14 of the air pump 11 through the air path control valve unit 16, and the residual water collected in the water cup 2 during the last work is discharged into the water cup 2.

[0047] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

Claims

1. A residual water treatment component for treating residual water in a dishwasher, the dishwasher comprising a controller, a water cup, a drainage pump, and a drainage pipe, the water cup being arranged at the bottom of a washing bin of the dishwasher; the water inlet end of the drainage pump being connected to the bottom of the water cup; characterized in that: include: A water storage tank, the bottom of which is connected to a residual water collecting and releasing pipe, the other end of which is connected to the bottom of the water cup or to the bottom of the pump chamber of the drainage pump; An air pump, wherein the air suction end of the air pump is connected to the inner cavity of the water storage tank at the upper part of the water storage tank through a first pipeline; the air outlet end of the air pump is connected to the external atmosphere through a second pipeline; an air circuit control valve unit is installed on the first pipeline and / or the second pipeline; The air circuit control valve unit and the air pump are both controlled by the controller and are constructed to achieve: a. when the air pump is started, the air pump is connected to the water storage tank to draw air from the water storage tank, and the second pipeline exhausts air to the external atmosphere; b. when the air pump is turned off, the upper part of the inner cavity of the water storage tank is isolated from the external atmosphere; c. when the water storage tank drains water from the residual water collection and release pipe into the water cup, the upper part of the water storage tank is connected to the external atmosphere.

2. A residual water treatment component according to claim 1, characterized in that: The water storage tank is arranged at a position higher than the highest water level of the water cup. When the air pump is turned off, the air outlet and the air intake of the air pump are in a conducting state. The air circuit control valve unit includes an electromagnetic switch valve, and the electromagnetic switch valve is installed in series in the second pipeline. The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve opens; when the air pump is turned off and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve opens; when the air pump is turned off and the water storage tank needs to store water, the electromagnetic switch valve closes.

3. A residual water treatment assembly according to claim 1, characterized in that: The water storage tank is arranged at a position higher than the highest water level of the water cup. When the air pump is turned off, the air outlet and air intake ends of the air pump are isolated. The air path control valve unit comprises an electromagnetic switch valve, one end of which is connected in parallel with the first pipeline, and the other end is connected to the external atmosphere. The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve is closed; when the air pump is closed and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve is opened; when the air pump is closed and the water storage tank needs to store water, the electromagnetic switch valve is closed.

4. A residual water treatment assembly according to claim 1, characterized in that: The water storage tank is arranged at a position higher than the highest water level of the water cup. When the air pump is turned off, the air outlet and air intake ends of the air pump are in a conducting state. The air circuit control valve unit comprises an electromagnetic switch valve and a one-way valve. One end of the electromagnetic switch valve is connected in parallel with the first pipeline, and the other end is connected to the external atmosphere. The one-way valve is connected in series in the second pipeline and is one-way connected to the external atmosphere. The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the electromagnetic switch valve is closed; when the air pump is closed and the water storage tank needs to drain water through the residual water collection and release pipe, the electromagnetic switch valve is opened; when the air pump is closed and the water storage tank needs to store water, the electromagnetic switch valve is closed.

5. A residual water treatment assembly according to claim 1, characterized in that: The water storage tank is arranged at a position higher than the highest water level of the water cup, and the air circuit control valve unit comprises a three-position three-way electromagnetic reversing valve; the first interface of the three-position three-way electromagnetic reversing valve is connected to the external atmosphere, the second interface is connected to the upstream of the first pipeline and leads to the suction end of the air pump, and the third interface is connected to the downstream of the first pipeline and leads to the water storage tank; The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the second interface is connected to the third interface, and the first interface is closed; when the air pump closes the water storage tank and needs to drain water through the residual water collection and release pipe, the first interface is connected to the third interface, and the second interface is closed; when the air pump closes the water storage tank and needs to store water, the first interface is connected to the second interface, and the third interface is closed.

6. A residual water treatment assembly according to claim 1, characterized in that: The air circuit control valve unit includes an A two-position three-way electromagnetic reversing valve and a B two-position three-way electromagnetic reversing valve; the A1 interface of the A two-position three-way electromagnetic reversing valve is connected to the external atmosphere, the A2 interface is connected to the upstream of the first pipeline to the air suction end of the air pump, and the A3 interface is connected to the downstream of the first pipeline to the water storage tank; the B1 interface of the B two-position three-way electromagnetic reversing valve is connected to the external atmosphere, the B2 interface is connected to the second pipeline to the air outlet end of the air pump, and the B3 interface is connected to the downstream of the first pipeline to the water storage tank; The air circuit control valve unit and the air pump are both controlled by the logic of the controller: when the air pump starts to extract air from the water storage tank, the A2 interface is connected to the A3 interface, the A1 interface is closed, the B2 interface is connected to the B1 interface, and the B3 interface is closed; when the air pump closes the water storage tank and needs to drain water through the residual water collection and release pipe, the A1 interface is connected to the A2 interface, the A3 interface is closed, the B2 interface is connected to the B3 interface, and the B2 interface is closed; when the air pump closes the water storage tank and needs to store water, the A1 interface is connected to the A2 interface, the A3 interface is closed, the B1 interface is connected to the B2 interface, and the B3 interface is closed.

7. A dishwasher, characterized in that A residual water treatment component as described in any one of claims 1 to 5 is installed; when the drain pump of the dishwasher finishes the last sewage discharge work, the controller controls the air pump to turn on, and the residual water in the water cup is sucked into the water storage tank, and then the air pump is turned off, and the upper part of the inner cavity of the water storage tank is isolated from the external atmosphere through the air path control valve unit; when the dishwasher is performing the cleaning work, the controller controls the air pump to turn off, and the upper part of the inner cavity of the water storage tank is connected to the external atmosphere through the air path control valve unit, and the residual water collected in the water cup during the last work is discharged into the water cup.

8. A dishwasher, characterized in that A residual water treatment component as claimed in claim 6 is installed; when the drain pump of the dishwasher finishes draining sewage for the last time, the controller controls the air pump to turn on, and sucks the residual water in the water cup into the water storage tank, and then turns off the air pump, and isolates the upper part of the inner cavity of the water storage tank from the external atmosphere through the air path control valve unit; when the dishwasher is performing cleaning work, the controller controls the air pump to turn on, and connects the upper part of the inner cavity of the water storage tank with the air outlet end of the air pump through the air path control valve unit, and discharges the residual water collected in the water cup during the last work into the water cup.

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