CN219895645U - Waterway system of dish washer - Google Patents

Abstract

The utility model discloses a waterway system of a dish washer, which comprises a water tank, a respirator, a water cup, a water softener and a drainage pump, wherein the outlet end of the water softener is communicated with a first water hose, the water injection pipe at the water outlet end of the water tank penetrates through the side wall of an inner container, a first drainage channel is formed in the respirator, a first drainage pipe head and a second drainage pipe head are formed at the bottom end of the respirator, the first drainage pipe head is communicated with the outlet of the drainage pump through the first drainage pipe, the second drainage pipe head is communicated with the second drainage pipe, an S-shaped repeatedly bent inner airway is formed in the water tank, the lower end of the inner airway is provided with an airway outlet communicated with the space below the inner container, a fan box is fixed at the top of the inner container, a front airway is formed in the fan box, the inlet end of the front airway is provided with a fan, the fan is used for sucking water vapor from the top of the inner container, and the outlet end of the front airway is communicated with the upper end of the inner airway. The utility model can improve the water vapor heat exchange efficiency and can drain the residual dish washing water.

Description

Waterway system of dish washer

Technical Field

The utility model relates to a dish washer, in particular to a waterway system of the dish washer.

Background

For realizing the dish washing function, the dish washer needs to have a plurality of functions such as washing, main washing, cold bleaching, hot bleaching, to this, need set up the waterway system who has functions such as soft water, heating water delivery, drainage around the dish washer inner bag, the waterway system of current dish washer contains water tank, water softener, drain pump, drinking cup etc. utilizes the pipeline to communicate between each mechanism to constitute waterway system, because dish washer can form a large amount of steam in the inner bag in the course of working, so need set up drying mechanism in the inner bag outside, the relevant solution please see the chinese patent publication of publication No. CN207306640U, the name "dish washer drying system and dish washer", wherein it has been recorded:

the novel heat exchange device comprises at least one first heat exchange chamber and at least one second heat exchange chamber, wherein the first heat exchange chambers and the second heat exchange chambers are alternately arranged at intervals, the first heat exchange chambers and the second heat exchange chambers are connected through heat exchange membranes, one end of each first heat exchange chamber is communicated with the upper end of a liner of a dish washer, the other end of each first heat exchange chamber is connected with a fan, one end of each second heat exchange chamber is communicated with the liner of the dish washer, and the other end of each second heat exchange chamber is communicated with the outside. The utility model also provides a dish washer, which comprises the dish washer drying system. Through the first heat exchange cavity and the second heat exchange cavity that just interval set up in turn, connect through the heat exchange membrane between first heat exchange cavity and second heat exchange cavity, can carry out the heat exchange with vapor in the dish washer inner bag and outside air, on the one hand with the energy utilization of vapor, avoided the waste of the energy, on the other hand reduced indoor humidity, improved the drying efficiency of dish washer.

Referring to fig. 2 and 3 of the specification of the publication, the mechanism utilizes the heat exchange membrane to exchange heat between internal water vapor and external air, and the exchange mode relies on the heat exchange between the internal side and the external side of the heat exchange membrane to realize heat exchange, so that the heat exchange area is small, the heat exchange speed is low, the efficiency is low, and a large amount of water vapor in the liner cannot be cooled and dried in time. In addition, the problem that the residual water is difficult to drain after dish washing is finished is also existed, if dishes are washed for a plurality of days at intervals, more bacteria can be bred in the dish washing machine, and the health of the user is not facilitated.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a water path system of a dish washing machine, which can improve the water vapor heat exchange efficiency and drain the residual dish washing water, aiming at the defects of the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme.

The utility model provides a dish washer waterway system, its including water tank, respirator, drinking cup, water softener and drain pump, the water tank with the respirator divides the inner bag both sides of locating dish washer, the water inlet end of water softener is used for the intercommunication water supply circuit that goes upward, the exit end intercommunication of water softener has first hose, the exit end intercommunication of first hose in the water tank, the water injection pipe of water tank water outlet end passes the lateral wall of inner bag, the drinking cup inlay and locate the bottom of inner bag, the steam inlet of respirator with the inside cavity intercommunication of inner bag, be formed with first drainage tube head and second drainage tube head in the respirator, the drain pump install in the lateral part of drinking cup, first drainage tube head with through first drain pipe intercommunication between the export of drain pump, the second drainage tube head intercommunication have the inside that is S shape a lot of bending, the lower extreme of inside be equipped with the inner bag below space is located the bottom, the air flue is equipped with in the inner bag is located to the bottom of inner bag, the fan is equipped with the air flue is located to the top end, the fan is equipped with the air flue is located to the top of inner bag, the fan is connected with the top end, the fan is connected with the top of inner bag.

Preferably, the outlet end of the front end air passage is communicated with the upper end of the inner air passage through a square tube.

Preferably, a soft water accommodating cavity is arranged in the water tank, and the soft water accommodating cavity is separated from the inner air passage through a water tank partition plate.

Preferably, a filter block is disposed within the internal airway.

Preferably, a breather cavity and a residual water containing cavity are formed in the breather, an inlet of the breather cavity is communicated with an inner cavity of the liner, a breather drain pipe head is arranged at the bottom of the breather, a breather drain pipe is communicated with the breather drain pipe head, and a first electromagnetic valve is communicated with the tail end of the breather drain pipe.

Preferably, the outlet end of the first electromagnetic valve is provided with a respirator drainage joint, an external thread is formed on the outer side of the respirator drainage joint, and a filter screen is arranged on the inner side of the respirator drainage joint.

Preferably, the upper end of the residual water accommodating cavity is communicated with a negative pressure pump, the lower end of the residual water accommodating cavity is provided with a residual water connecting pipe head, the residual water connecting pipe head is communicated with a second electromagnetic valve through a first residual water drain pipe, the second electromagnetic valve is communicated with a drainage pump supporting seat at the side part of the water cup through a second residual water drain pipe, the drainage pump is fixed on the drainage pump supporting seat, and the joint of the second residual water drain pipe and the drainage pump supporting seat is close to the bottom of the drainage pump supporting seat.

Preferably, the upper end of the residual water accommodating cavity is provided with an air passage pipe head, the air passage pipe head is communicated with an air pipe, the air pipe extends upwards to the upper part of the inner container, and a negative pressure port of the negative pressure pump is communicated with the upper end of the air pipe.

Preferably, a bottom support is fixed at the bottom of the inner container.

Preferably, the side of the bottom bracket is formed with a receiving groove, and the respirator drain fitting and the end of the second drain pipe are both secured within the receiving groove.

In the waterway system of the dish washing machine disclosed by the utility model, soft water generated by the water cup water softener is conveyed to the water tank through the first soft water pipe, then is injected into the inner container through the water injection pipe at the water outlet end of the water tank and is converged into the water cup, water is supplied to the spray arm in the dish washing process through the water cup, when certain water vapor is generated after heating and washing, the fan in the fan box at the top of the inner container can be started, the fan conveys the water vapor to the inner air passage, and because the inner air passage is positioned in the water tank filled with water and is bent in an S shape for multiple times, the heat exchange area between the water vapor and the water in the water tank is greatly improved, and meanwhile, compared with the heat exchange mode with external air, the water vapor and the water are subjected to heat exchange.

Drawings

FIG. 1 is a perspective view of a dishwasher waterway system and an inner container of the present utility model;

FIG. 2 is a second perspective view of the waterway system and the liner of the dishwasher of the present utility model;

FIG. 3 is a perspective view of a dishwasher waterway system and an inner container of the present utility model;

FIG. 4 is a perspective view of a dishwasher waterway system and an inner container of the present utility model;

FIG. 5 is a bottom view of the water circuit and the liner of the dishwasher of the present utility model;

FIG. 6 is a perspective view of a dishwasher waterway system of the present utility model;

FIG. 7 is an internal structural view of the water tank;

FIG. 8 is a second perspective view of the waterway system of the dishwasher of the present utility model;

FIG. 9 is a block diagram of a cup portion;

FIG. 10 is a partially exploded view of the cup portion;

FIG. 11 is a top view of the respirator;

fig. 12 is a cross-sectional view taken along line C-C in fig. 11.

Detailed Description

The utility model is described in more detail below with reference to the drawings and examples.

The utility model discloses a waterway system of a dish washer, which is shown in combination with figures 1 to 12 and comprises a water tank 1, a breather 2, a water cup 3, a water softener 4 and a drainage pump 5, wherein the water tank 1 and the breather 2 are respectively arranged at two sides of an inner container 7 of the dish washer, the water inlet end of the water softener 4 is used for communicating an uplink water supply loop, the outlet end of the water softener 4 is communicated with a first soft water pipe 8, the outlet end of the first soft water pipe 8 is communicated with the water tank 1, a water injection pipe 100 at the water outlet end of the water tank 1 penetrates through the side wall of the inner container 7, the water cup 3 is embedded at the bottom of the inner container 7, a steam inlet 200 of the breather 2 is communicated with an inner cavity of the inner container 7, a first drainage channel 201 is formed in the breather 2, the bottom of respirator 2 is formed with first drainage tube head 202 and second drainage tube head 203, drain pump 5 install in the lateral part of drinking cup 3, first drainage tube head 202 with connect through first drain pipe 204 between drain pump 5' S the export, second drainage tube head 203 connects has second drain pipe 205, be formed with in the water tank 1 and be S-shaped multiple crooked inside air flue 101, the lower extreme of inside air flue 101 be equipped with the air flue export 102 that the space below inner bag 7 is linked together, the top of inner bag 7 is fixed with fan box 103, be formed with the front end air flue in the fan box 103, the entry end of front end air flue is equipped with fan 105, fan 105 is used for follow the top suction steam of inner bag 7, the exit end of front end air flue 104 communicate in the upper end of inside air flue 101.

In the above structure, the soft water generated by the water cup water softener 4 is delivered to the water tank 1 through the first soft water pipe 8, and then is injected into the inner container 7 through the water injection pipe 100 at the water outlet end of the water tank 1, and is converged into the water cup 3, the water cup 3 supplies water to the spray arm in the bowl washing process, when a certain amount of water vapor is generated after heating and washing, the fan 105 in the fan box 103 at the top of the inner container 7 can be started, the fan 105 delivers the water vapor to the inner air flue 101, and because the inner air flue 101 is positioned in the water tank 1 filled with water and bent in an S shape for many times, the heat exchange area between the water vapor and the water in the water tank 1 is greatly improved.

Referring to fig. 7, the fan box 103 is mounted on the top of the inner container 7, so as to facilitate water vapor transportation, and in this embodiment, an outlet end of the front air passage 104 is communicated with an upper end of the inner air passage 101 through a square tube 106.

In order to ensure that the water vapor in the inner air passage 101 exchanges heat with the water in the water tank 1 well, in this embodiment, a soft water accommodating chamber 107 is provided in the water tank 1, and the soft water accommodating chamber 107 is separated from the inner air passage 101 by a water tank partition 108. In practical applications, the water tank partition 108 may be configured to be ultra-thin, so as to be capable of blocking water and steam and bearing a certain pressure.

In order to prevent dust, insects, etc. from entering the inner air passage 101, in the present embodiment, a filter block 109 is provided in the inner air passage 101.

With respect to the preferred construction of the respirator 2, in this embodiment, a respirator inner cavity 206 and a residual water containing cavity 207 are formed in the respirator 2, an inlet of the respirator inner cavity 206 is communicated with an inner cavity of the liner 7, a respirator drain pipe head 208 is arranged at the bottom of the respirator 2, the respirator drain pipe head 208 is communicated with a respirator drain pipe 209, and a first electromagnetic valve 210 is communicated with the tail end of the respirator drain pipe 209. The respirator 2 functions to draw hot gas from the bladder during the hot washing process, to facilitate balancing the pressure in the bladder, thereby providing a respirator lumen 206. On this basis, in order to solve another technical problem proposed by the present utility model, it is preferable that a residual water containing cavity 207 is disposed adjacent to the inner respirator cavity 206 of the respirator 2, and the residual water containing cavity 207 has a specific structure:

as shown in fig. 6 and 8, the negative pressure pump 6 is communicated with the upper end of the residual water accommodating cavity 207, the residual water connecting pipe head 214 is arranged at the lower end of the residual water accommodating cavity 207, the residual water connecting pipe head 214 is communicated with the second electromagnetic valve 216 through the first residual water drain pipe 215, the second electromagnetic valve 216 is communicated with the drain pump supporting seat 300 at the side part of the water cup 3 through the second residual water drain pipe 217, the drain pump 5 is fixed on the drain pump supporting seat 300, and the joint of the second residual water drain pipe 217 and the drain pump supporting seat 300 is close to the bottom of the drain pump supporting seat 300.

In the above structure, when the dish washing is completed, the water in the water cup 3 is discharged to the outside through the first water discharge pipe head 202 and the second water discharge pipe head 203, however, a certain gap must exist between the impeller of the water discharge pump 5 and the inner wall of the water discharge pump supporting seat 300, a small amount of water can not be discharged completely after the water is discharged in the gap, if the water is placed for a long time, bacteria can grow, but in this embodiment, a negative pressure pump 6, a residual water containing cavity 207 and a second electromagnetic valve 216 are additionally arranged, when the water discharge pump 5 is completed, the negative pressure pump 6 can perform suction on the residual water containing cavity 207 to enable negative pressure to be generated in the residual water containing cavity 207, when the negative pressure is enough and the negative pressure pump 6 is stopped, the second electromagnetic valve 216 is powered on, and the connection end point of the second residual water discharge pipe 217 is close to the bottom of the water discharge pump supporting seat 300, so that the water which is not discharged at the bottom of the supporting seat 300 can be sucked into the residual water containing cavity 207 quickly under the action of the instant negative pressure, and finally the water discharge pump 216 is closed, and the water discharge pump 300 can be prevented from growing in the clean water cup 3 based on the clean water cup.

To facilitate the drainage of the cooled water in the respirator 2, in this embodiment, the outlet end of the first solenoid valve 210 is provided with a respirator drain fitting 211, an external thread 212 is formed on the outer side of the respirator drain fitting 211, and a filter screen 213 is provided on the inner side of the respirator drain fitting 211.

In order to better communicate with the negative pressure pump 6, in this embodiment, an air passage head 219 is disposed at the upper end of the remaining water accommodating cavity 207, the air passage head 219 is communicated with an air pipe 218, the air pipe 218 extends upward to the upper side of the inner container 7, and a negative pressure port of the negative pressure pump 6 is communicated with the upper end of the air pipe 218.

As a preferred way, a bottom support 9 is fixed to the bottom of the inner container 7. In practical application, the bottom support 9 not only can reliably support the liner 7, but also can be provided with a pipe head at the side part thereof so as to be communicated with an external pipeline, specifically means: the bottom bracket 9 is formed with a receiving groove 900 at a side portion thereof, and both the respirator drain fitting 211 and the end portion of the second drain pipe 205 are fixed in the receiving groove 900.

In this embodiment, the water softener 4 includes a resin chamber and a salt chamber, wherein the resin in the resin chamber is used for softening water, and the salt in the salt chamber is used for regenerating the resin. The traditional dish washer, its resin chamber only has an export, this export passes through the pipeline intercommunication water tank, the effect of water tank is the pre-installation softened water, another effect is carrying out the heat exchange with the heat in the inner bag, make the water in the water tank absorb certain heat, possibly promote the rate of heating up to the soft water and save the energy consumption in the dish washing process, but, the capacity of water tank is general 2L, when the water tank is full and when washing dishes, can fill water into the inner bag by the water tank, nevertheless once wash needs approximately 3.5L water, when the soft water in the water tank is used up in the follow-up dish washing link, need the water softener to fill water tank again, the water route of this moisturizing process is longer, can not fill water cup 3 fast, consequently prolonged the water filling time, work efficiency is not high.

To solve the above technical problem, in this embodiment, the water outlet end of the water softener 4 is provided with a first switching electromagnetic valve 400, the first switching electromagnetic valve 400 includes a water inlet end and two water outlet ends, the water inlet end of the first switching electromagnetic valve 400 is communicated with the resin cavity of the water softener 4, one water outlet end of the first switching electromagnetic valve 400 is communicated with the first water hose 8, the other water outlet end of the first switching electromagnetic valve 400 is communicated with the water cup 3 through a straight-through pipeline 401, and the first switching electromagnetic valve 400 is used for switching the resin cavity to be communicated to the first water hose 8 or the straight-through pipeline 401 according to a control instruction.

In the above structure, in the initial working stage of the dish washer, through command control, the first switching electromagnetic valve 400 is made to switch and communicate the resin cavity to the first soft water pipe 8, soft water is filled in the water tank 1, in a series of processes of dish washing, if the soft water in the water tank 1 is used up, the first switching electromagnetic valve 400 can be controlled to generate switching action, the resin cavity is switched and communicated to the through pipeline 401, the through pipeline 401 with shorter length is directly filled with water into the water cup 3, thereby shortening the water supplementing path, shortening the water supplementing time, and further improving the working efficiency of the dish washer.

In this embodiment, the water softener 4 has two switching electromagnetic valves at the same time, specifically, the water softener 4 includes a salt cavity, a second switching electromagnetic valve 402 is disposed on the outer side of the water softener 4, the second switching electromagnetic valve 402 includes a common end and two switching ends, the common end of the second switching electromagnetic valve 402 is communicated with the resin cavity, the two switching ends of the second switching electromagnetic valve 402 are respectively communicated with the water inlet end of the water softener 4 and the salt cavity, and the second switching electromagnetic valve 402 is used for switching and communicating the resin cavity to the water inlet end of the water softener 4 or the salt cavity according to a control instruction. When the resin cavity is switched and communicated to the water inlet end of the water softener 4, the resin cavity can be communicated with an uplink water supply waterway, and when the resin in the resin cavity needs to be regenerated after being used for a period of time, the resin cavity can be switched and communicated to the salt cavity by utilizing a control instruction, and the resin is regenerated by utilizing the salt in the salt cavity.

Referring to fig. 5, in practical applications, the water cup 3, the drain pump 5 and some pipelines need to be disposed below the liner 7, limited by the size of the dishwasher, the space below the liner 7 is particularly narrow, and the space occupied by the components such as the water cup 3 is relatively large, because the water cup 3 needs to be disposed at the middle position of the liner 7, so that the drain pump 5 needs to be disposed in the triangular space between the water cup 3 and the corner of the bottom support 9, in the conventional structure, the third drain pipe head 301 at the side of the drain pump support 300 is generally perpendicular to the axis of the drain pump support 300, which results in that the third drain pipe head 301 extends toward the bottom support 9, and the third drain pipe head 301 interferes with the bottom support 9.

In order to solve this problem, in this embodiment, referring to fig. 5, a third drain pipe head 301 is formed at a side portion of the drain pump support base 300, the third drain pipe head 301 is communicated between the first drain pipe 204 and the outlet of the drain pump 5, the third drain pipe head 301 includes an axial line a, the drain pump support base 300 includes an axial line B, and an included angle between the axial line a and the axial line B is 30 ° to 50 °. The angle is preferably 40 °.

The design of this embodiment is based on the above-mentioned contained angle, so that the third drain pipe head 301 is installed in an inclined manner with respect to the drain pump supporting seat 300, and is parallel with respect to the bottom support 9, and this structure not only can facilitate the insertion of the first drain pipe 204, but also can avoid the mutual interference between the first drain pipe 204 and the bottom support 9, and can effectively avoid the occurrence of the poor condition of water leakage.

Referring to fig. 10, in one embodiment of the present utility model, a cylindrical valve seat 302 is disposed in the third drain pipe head 301, an inner step edge 303 is formed inside the outlet end of the cylindrical valve seat 302, the outlet side of the inner step edge 303 is covered with a second silicon sheet 304, and the edge of the second silicon sheet 304 is hinged with the cylindrical valve seat 302.

In the above-described configuration, the second silicone rubber sheet 304 is used as a check valve, and when the water in the water cup 3 is discharged to the outside through the third water discharge pipe head 301, the water in the first water discharge pipe 204 is prevented from flowing back by the check function of the second silicone rubber sheet 304, and this configuration has a small disadvantage in that the cylindrical valve seat 302 is in a lateral state due to being accommodated in the third water discharge pipe head 301, and thus the second silicone rubber sheet 304 is in a vertical state, and in the check state, the second silicone rubber sheet 304 is reliably stopped only when a sufficient water pressure is provided in the first water discharge pipe 204, and when a small amount of residual water is provided in the first water discharge pipe 204, a gap is generated between the second silicone rubber sheet 304 and the inner step edge 303, which gap causes the residual water to flow back into the water cup 3, and thus the check effect is not good.

Referring to fig. 12, an inverted "J" shaped second drain passage 220 is formed in the respirator 2, the lower end of the second drain passage 220 is connected to the first drain pipe head 202, and the upper end of the second drain passage 220 is connected to the first drain passage 201.

Specifically, a step portion 221 is formed in a vertical section of the second drain channel 220, a drain through hole 222 is formed in the step portion 221, a first silica gel sheet 223 is attached to the top of the step portion 221, the first silica gel sheet 223 covers the drain through hole 222, the edge of the first silica gel sheet 223 is hinged to the step portion 221, when water in the first drain pipe head 202 is drained into the second drain channel 220, water flows through the first silica gel sheet 223 and is drained into the first drain channel 201, and when the drain in the first drain pipe head 202 is stopped, the first silica gel sheet 223 falls back under the action of gravity and covers the drain through hole 222. In the above preferred alternative structure, a flat step portion 221 is provided in the second drainage channel 220 in the respirator 2, and the first silica gel sheet 223 is covered on the top of the drainage through hole 222 on the step portion 221, when the drainage is completed, the first silica gel sheet 223 will naturally cover the drainage through hole 222 under the action of gravity, thereby avoiding a gap between the two, and having better non-return effect.

In the present embodiment, a water blocking portion 224 protruding upward is formed between the step 221 and the first drain passage 201. Wherein, since the water blocking portion 224 has a certain height, a small amount of water remains in the channel above the first silica gel sheet 223 after water is discharged, and the small amount of water increases the weight borne by the first silica gel sheet 223, so that the first silica gel sheet 223 can be more tightly attached to the step portion 221.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a dishwasher waterway system, its characterized in that, including water tank (1), respirator (2), drinking cup (3), water softener (4) and drain pump (5), water tank (1) with respirator (2) divide to locate inner bag (7) both sides of dishwasher, the water inlet of water softener (4) is used for the intercommunication water supply circuit that goes upward, the exit end intercommunication of water softener (4) has first hose (8), the exit end intercommunication of first hose (8) in water tank (1), water injection pipe (100) of water tank (1) water outlet passes through the lateral wall of inner bag (7), drinking cup (3) inlay in the bottom of inner bag (7), steam inlet (200) of respirator (2) with the inside cavity intercommunication of inner bag (7), be formed with first drainage channel (201) in respirator (2), the bottom of respirator (2) is formed with first drainage tube head (202) and second drainage pump (203), install in water injection pipe (100) of water outlet end passes through the lateral wall of inner bag (7) drainage tube (2) water outlet (200) is connected with second drainage pump (203), the novel water tank is characterized in that an inner air passage (101) which is S-shaped and bent repeatedly is formed in the water tank (1), an air passage outlet (102) which is communicated with the space below the inner container (7) is formed in the lower end of the inner air passage (101), a fan box (103) is fixed at the top of the inner container (7), a front end air passage is formed in the fan box (103), a fan (105) is arranged at the inlet end of the front end air passage, the fan (105) is used for sucking water vapor from the top of the inner container (7), and the outlet end of the front end air passage (104) is communicated with the upper end of the inner air passage (101).

2. The dishwasher waterway system of claim 1, characterized in that the outlet end of the front air channel (104) is connected to the upper end of the inner air channel (101) by means of a square tube (106).

3. The dishwasher waterway system according to claim 1, characterized in that a soft water receiving chamber (107) is provided in the water tank (1), the soft water receiving chamber (107) being separated from the inner air duct (101) by a tank partition (108).

4. The dishwasher waterway system of claim 1, characterized in that a filter block (109) is provided in the internal air channel (101).

5. The dishwasher waterway system of claim 1, characterized in that a breather cavity (206) and a residual water containing cavity (207) are formed in the breather (2), an inlet of the breather cavity (206) is communicated with an internal cavity of the liner (7), a breather drain pipe head (208) is arranged at the bottom of the breather (2), a breather drain pipe (209) is communicated with the breather drain pipe head (208), and a first electromagnetic valve (210) is communicated with the tail end of the breather drain pipe (209).

6. The dishwasher waterway system of claim 5, characterized in that an outlet end of the first solenoid valve (210) is provided with a breather drain fitting (211), an external thread (212) is formed on an outer side of the breather drain fitting (211), and a filter screen (213) is provided on an inner side of the breather drain fitting (211).

7. The dishwasher waterway system of claim 5, characterized in that the upper end of the residual water holding cavity (207) is communicated with a negative pressure pump (6), the lower end of the residual water holding cavity (207) is provided with a residual water connecting pipe head (214), the residual water connecting pipe head (214) is communicated with a second electromagnetic valve (216) through a first residual water drain pipe (215), the second electromagnetic valve (216) is communicated with a drain pump supporting seat (300) at the side part of the water cup (3) through a second residual water drain pipe (217), the drain pump (5) is fixed on the drain pump supporting seat (300), and the joint of the second residual water drain pipe (217) and the drain pump supporting seat (300) is close to the bottom of the drain pump supporting seat (300).

8. The waterway system of dish washer according to claim 7, characterized in that the upper end of the residual water containing cavity (207) is provided with a gas pipe head (219), the gas pipe head (219) is communicated with a gas pipe (218), the gas pipe (218) extends upwards to the upper part of the inner container (7), and the negative pressure port of the negative pressure pump (6) is communicated with the upper end of the gas pipe (218).

9. The dishwasher waterway system of claim 6, characterized in that the bottom of the liner (7) is fixed with a bottom support (9).

10. The dishwasher waterway system of claim 9, characterized in that the side of the bottom bracket (9) is formed with a receiving groove (900), the ends of the respirator drain fitting (211) and the second drain pipe (205) being secured within the receiving groove (900).