CN210902885U

CN210902885U - Anti-siphon structure and dish washing machine

Info

Publication number: CN210902885U
Application number: CN201921491627.6U
Authority: CN
Inventors: 王德洪
Original assignee: Guangzhou Haike Electronics Technology Co ltd
Current assignee: Guangzhou Haike Electronics Technology Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-07-03
Anticipated expiration: 2029-09-09

Abstract

The utility model relates to an anti-siphon structure and dish washer, including body and plug member. The body is hollow; the body is also provided with a vent hole, a first water inlet and a first water outlet, and the vent hole is used for being respectively communicated with the inner container of the dish washing machine and the inside of the body; the first water inlet is respectively communicated with the inside of the body and a drain pipe of the dishwasher, and the first water outlet is communicated with the inside of the body and used for discharging wastewater. The plug piece is arranged in the body, and when the dishwasher drains water, the plug piece blocks the vent hole; when the dishwasher is supplied with water, the stopper is separated from the vent. The anti-siphon structure is simple and compact in structure, occupied space is reduced, production cost is reduced, and waste water can be effectively prevented from flowing backwards.

Description

Anti-siphon structure and dish washing machine

Technical Field

The utility model relates to an anti-siphon technical field especially relates to an anti-siphon structure and dish washer.

Background

The dish washer is a device for washing tableware, reduces the labor intensity of people, improves the working efficiency and improves the cleanness and sanitation. After the dishwasher is cleaned at high temperature, the pressure of the inner container of the dishwasher can be reduced and is less than the external air pressure, and wastewater flows back into the inner container through the drainage pipeline under the action of the internal and external pressure difference, so that the environment of the inner container is polluted. Accordingly, commercial dishwashers are generally provided with an anti-siphon structure.

However, the anti-siphon structure on the market at present is more complicated, and the part that uses is more, and each part manufacturing procedure is many and connect the water pipe that needs to be used many, and the whole setting is dispersed, occupies more inner space, and material cost and processing cost are also higher.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an anti-siphon structure and a dishwasher that have simple structure, small occupied space and can effectively prevent the backflow of wastewater.

An anti-siphon structure for being provided in a dishwasher, comprising:

a body, the body being hollow inside; the body is also provided with a vent hole, a first water inlet and a first water outlet, and the vent hole is used for being respectively communicated with the inner container of the dish washing machine and the inside of the body; the first water inlet is respectively communicated with the inside of the body and a drain pipe of the dishwasher, and the first water outlet is communicated with the inside of the body and used for discharging wastewater;

the plug piece is arranged inside the body, and blocks the vent hole when the dishwasher drains water; when the dishwasher is supplied with water, the stopper is separated from the vent.

The technical solution is further explained below:

in one embodiment, the anti-siphon structure further comprises a first partition arranged in the body, the first partition is used for dividing the interior of the body into a first cavity and a second cavity, the plug is arranged in the first cavity, and the air vent is arranged on the side wall of the first cavity; the first water inlet and the first water outlet are arranged on the side wall of the second cavity.

In one embodiment, the first separator has a notch, and the first cavity is communicated with the second cavity through the notch.

In one embodiment, the plug member is a PP plastic member; or, the plug member is a valve, and the valve is arranged in the first cavity and used for controlling the opening degree of the vent.

In one embodiment, the body includes a first inner wall surface forming the second cavity, a second partition is disposed in the second cavity, the second partition includes a first end and a second end, the first end is fixed on the first inner wall surface, and the second end is a free end;

the second partition divides the second cavity into a first part and a second part, the first part is communicated with the second part, the first water inlet is arranged on the side wall of the first part, and the first water outlet is arranged on the side wall of the second part.

In one embodiment, the body further includes a second inner wall surface forming the second cavity, the first inner wall surface is connected with the second inner wall surface, the first water inlet is arranged on the second inner wall surface, and the distance from the free end to the first inner wall surface is larger than the distance from the first water inlet to the first inner wall surface.

A dish washing machine comprises a spray arm structure, a first water tank, a main washing pump and an anti-siphon structure, wherein the first water tank and the spray arm structure are arranged in an inner container, and the main washing pump is arranged outside the inner container and communicated with the first water tank;

the spray arm structure includes honeycomb duct and spray arm casing, the honeycomb duct includes out the water end, it locates to go out the water end inside the spray arm casing, keeping away from of honeycomb duct go out the one end of water end communicate in the main wash pump, it is equipped with cyclic annular extension to go out the water end, just cyclic annular extension laminating in on the inner wall of spray arm casing.

In one embodiment, the dishwasher further comprises a second water tank and a first water inlet pipe, wherein two ends of the first water inlet pipe are respectively communicated with the first water tank and the second water tank; an electrolytic component is arranged in the second water tank.

In one embodiment, the dishwasher further comprises a second water inlet pipe and a water inlet valve, wherein two ends of the second water inlet pipe are respectively communicated with the water inlet valve and the second water tank.

In one embodiment, the dishwasher further comprises a vent pipe, wherein one end of the vent pipe is communicated with the vent hole, and the other end of the vent pipe is communicated with the inner container.

Above-mentioned anti-siphon structure and dish washer have following beneficial effect at least:

(1) the anti-siphon structure that this embodiment provided includes body and this internal plug member, and simple structure and compactness are favorable to reducing the space and occupy, reduction in production cost.

(2) At the in-process of dish washer drain pipe drainage (drainage process is generally by the drain pump drive, and the drain pump sets up on the drain pipe), the water level descends in the inner bag, and atmospheric pressure reduces, and atmospheric pressure is less than external atmospheric pressure, and the plug member blocks up the blow vent this moment, can prevent that waste water from in proper order from preventing that first water inlet, the blow vent of siphon structure body flow back to the inner bag, polluting the inner bag environment. The wastewater in the inner container can only be discharged out of the dishwasher through the drain pipe and the first water inlet and then the first water outlet.

(3) When the drainage pump of dish washer is in the inoperative condition (non-drainage state), the plug part does not block up the blow vent, and the blow vent passes through first cavity and second cavity and communicates in first delivery port this moment, and first delivery port communicates with each other with the external world again, and the air and the external air phase of inner bag circulate promptly, and atmospheric pressure in the inner bag is equal to external atmospheric pressure, and inner bag and drain pipe form the linker promptly. According to the communicating vessel principle, water in the inner container can not flow to the first water inlet and the first water outlet through the drain pipe, water in the inner container is effectively prevented from flowing out of the drain pipe, and waste water can be prevented from flowing back to the inner container from the drain pipe.

(4) The honeycomb duct in the spray arm structure of the dish washer is provided with the annular extension part, and the annular extension part is attached to the inner wall of the spray arm shell, so that water can be effectively prevented from overflowing from the joint of the water outlet end of the honeycomb duct and the spray arm shell, and the improvement of the water utilization rate and the cleaning efficiency of the dish washer are facilitated.

(5) Be equipped with the second water tank in the dish washer, set up electrolysis part in the second water tank and be used for the electrolysis water, the water after the electrolysis is used for the washing in first water tank through first inlet pipe flow, effectively improves dish washer's clean efficiency.

Drawings

Fig. 1 is a schematic view of an internal structure of a dishwasher according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base of a dishwasher according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an anti-siphon structure according to an embodiment of the present invention;

FIG. 4 is a schematic view of an alternate angle of the anti-siphon structure of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the anti-siphon structure of FIG. 4 along line A-A;

fig. 6 is a schematic structural view of a spray arm structure according to an embodiment of the present invention;

FIG. 7 is a schematic view of an alternate angle of the spray arm configuration of FIG. 6;

fig. 8 is a schematic cross-sectional view of the nozzle arm structure of fig. 7 taken along line B-B.

Description of reference numerals: 1. an anti-siphon structure; 11. a body; 111. a first cavity; 112. a second cavity; 112a, a first inner wall surface; 112b, a second inner wall surface; 112c, a first portion; 112d, a second portion; 113. a vent; 114. a first water inlet; 115. a first water outlet; 116. a second separator; 116a, a first end; 116b, a second end; 12. a plug member; 13. a first separator; 131. a notch; 2. a water inlet valve; 3. an inner container; 31. a spray arm structure; 311. a flow guide pipe; 311a, a water outlet end; 311b, an annular extension; 312. a spray arm housing; 32. a filter; 33. a breather pipe; 4. a base; 5. draining pump; 51. a drain pipe; 6. a main wash pump; 61. a first main wash conduit; 62. a second main wash conduit; 7. a first water tank; 8. a second water tank; 81. a first water inlet pipe; 82. a second water inlet pipe; 9. a heating plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The embodiment provides an anti-siphon structure and a dish washing machine, which have the advantages of simple structure, small occupied space and effective anti-siphon effect, and will be described in detail with reference to the accompanying drawings.

In one embodiment, referring to fig. 1, 2 and 5, an anti-siphon structure 1 is used in a dishwasher, which includes a tub 3 and a drain pipe 51 communicated with the tub 3. The anti-siphon structure 1 comprises a body 11 and a plug 12. The body 11 is hollow inside. The body 11 is further opened with a vent 113, a first water inlet 114 and a first water outlet 115. The vent hole 113 is provided to communicate with the inner container 3 and the interior of the main body 11. The first water inlet 114 is respectively communicated with the interior of the body 11 and one end of the water discharge pipe 51 far away from the inner container 3. The first water outlet 115 is communicated with the inside of the body 11 for discharging waste water. Plug 12 is provided inside body 11. When the dishwasher is draining, the stopper 12 blocks the vent 113. When the dishwasher is supplied with water, the stopper 12 is separated from the vent 113.

Specifically, the anti-siphon structure 1 further includes a first partition 13 provided inside the body 11, and the first partition 13 is used to divide the inside of the body 11 into a first cavity 111 and a second cavity 112. The plug 12 is arranged in the first cavity 111, and the side wall of the first cavity 111 is provided with a vent 113; the side wall of the second cavity 112 is opened with a first water inlet 114 and a first water outlet 115.

In the process of draining water in the drain pipe 51 of the dishwasher (the draining process is generally driven by the drain pump 5), the water level in the inner container 3 is lowered, the air pressure is reduced, and the air pressure is lower than the external atmospheric pressure, at this time, the plug 12 blocks the vent 113, so that the wastewater can be prevented from flowing back to the inner container 3 from the first water inlet 114 and the vent 113 of the anti-siphon structure 1 in sequence to pollute the environment of the inner container 3. The waste water in the inner container 3 can be discharged out of the dishwasher only through the drain pipe 51, the first water inlet 114 and the first water outlet 115.

When the drainage pump 5 of the dishwasher is in a non-working state (non-drainage state), the plug 12 does not block the vent 113, at this time, the vent 113 is communicated with the first water outlet 115 through the first cavity 111 and the second cavity 112, the first water outlet 115 is communicated with the outside, namely, the air of the inner container 3 is communicated with the outside air, the air pressure in the inner container 3 is equal to the outside atmospheric pressure, namely, the inner container 3 and the drainage pipe 51 form a communicating vessel. According to the principle of the communicating vessel, the water in the inner container 3 cannot flow to the first water inlet 114 and the first water outlet 115 through the water discharge pipe 51, the water in the inner container 3 is effectively prevented from flowing out of the water discharge pipe 51, and the wastewater can be prevented from flowing back to the inner container 3 from the water discharge pipe 51.

In addition, the anti-siphon structure 1 provided by the embodiment comprises the body 11 and the plug 12 in the body 11, and the anti-siphon structure is simple and compact in structure, and is beneficial to reducing the occupied space and reducing the production cost.

In one embodiment, referring to fig. 3-5, the first separator 13 has a notch 131. When the drainage pump 5 of the dishwasher stops working, the plug 12 is in a state of not blocking the vent 113, the vent 113 can be communicated with the air of the second cavity 112 through the gap 131, and because the air outside the second cavity 112 and the first water outlet 115 is communicated, the vent 113 is communicated with the air outside, so that the inner container 3 and the drainage pipe 51 can form a communicating vessel. According to the principle of the communicating vessel, the water in the inner container 3 cannot flow to the first water inlet 114 and the first water outlet 115 through the water discharge pipe 51, the water in the inner container 3 is effectively prevented from flowing out of the water discharge pipe 51, and the wastewater can be prevented from flowing back to the inner container 3 from the water discharge pipe 51. Further, the dishwasher further includes a vent pipe 33, and one end of the vent pipe 33 is communicated with the vent hole 113, and the other end is communicated with the inner container 3. The end of the vent pipe 33 away from the vent hole 113 is higher than the water level of the inner container 3, so that one end of the vent pipe 33 is connected with the outside air, and the other end is connected with the inner container 3. In one embodiment, referring to fig. 5, plug 12 is a PP plastic (PP, abbreviated as Polypropylene, chinese name Polypropylene). The use of the plug 12 is described in more detail below, taking the plug 12 as a PP ball for example: in the process of draining water from the drain pipe 51 of the dishwasher, the water level in the inner container 3 is lowered, the air pressure of the inner container 3 is lowered when the volume of the gas in the inner container 3 is increased, and the air pressure of the inner container 3 is lower than the external atmospheric pressure. Under the action of the pressure difference between the inner container 3 and the outside, the PP balls disposed in the first cavity 111 float and block the vent holes 113. Thus, the wastewater can be prevented from flowing back into the inner container 3 from the first water inlet 114 and the air vent 113 of the anti-siphon structure 1 body 11 in sequence, and polluting the environment of the inner container 3. The waste water in the inner container 3 can be discharged out of the dishwasher only through the drain pipe 51, the first water inlet 114 and the first water outlet 115. Similarly, when the drain pump 5 of the dishwasher is in a non-operating state (non-draining state), the PP ball falls from the position blocking the vent 113 under the action of its own gravity, at this time, the vent 113 is not blocked by the PP ball, so that the vent 113 sequentially passes through the notch 131 of the first separator 13, the first cavity 111 and the second cavity 112 to be communicated with the first water outlet 115, the first water outlet 115 is communicated with the outside, that is, the air of the inner container 3 and the outside air circulate, the air pressure in the inner container 3 is equal to the outside atmospheric pressure, that is, the inner container 3 and the drain pipe 51 form a communicating vessel. According to the principle of the communicating vessel, the water in the inner container 3 does not flow to the first water inlet 114 and the first water outlet 115 through the water discharge pipe 51, the water in the inner container 3 is effectively prevented from flowing out of the water discharge pipe 51, and the wastewater can be prevented from flowing back to the inner container 3 from the water discharge pipe 51. It will be appreciated that plug 12 may take other shapes such as a cube, and other less dense, lightweight materials may be used, and are not specifically limited herein. It will be appreciated that instead of providing the first partition 13 with a notch 131, apertures may be provided in the side walls of the first cavity 111. The orifice is used for communication between the vent 113 and the outside atmosphere.

The first cavity 111 may be a cylindrical cavity or a cavity with other shapes, and the size of the first cavity 111 is slightly larger than that of the PP plastic part. That is, the PP plastic member can be accommodated in the first cavity 111, but the PP plastic member can move in the first cavity 111 only along the direction from the first partition 116 to the vent 113, and the movement of the PP plastic member in other directions is limited due to the narrow space of the first cavity 111. For example, when the plug is a PP ball, the first cavity 111 is a rectangular parallelepiped cavity. The length of the long side and the wide side of the cuboid are both 6cm, the diameter of the sphere is 5.5cm, but the height of the cuboid is 10 cm. In this way, the movement path of the PP ball in the first cavity 111 can only be along the height direction of the cuboid, and the movement of the cuboid in both width and length directions is limited. Thus, the PP ball can be precisely moved to the vent 113 by the pressure difference between the inner bladder pressure and the atmospheric pressure. And the wastewater can not flow back to the inner container 3 through the anti-siphon structure 1 in the working process of the drainage pump 5.

Further, the body 11 may be an integrally formed structure, or the body 11 includes an upper housing and a lower housing, which are integrally formed by clamping, wherein the first cavity 111 is disposed in the upper housing, and the second cavity 112 is disposed in the lower housing.

As another alternative, the plug 12 may be a valve, which is disposed in the first cavity 111 for controlling the opening of the vent 113. Wherein, the valve can be an electric control valve and is controlled by a control module of the dishwasher. When the drain pump 5 of the dishwasher drains water, the electric control valve automatically closes the vent 113 under the control of the control module, so that the wastewater can be prevented from flowing back to the inner container 3 from the first water inlet 114 and the vent 113 of the anti-siphon structure 1 body 11 in sequence to pollute the environment of the inner container 3. The waste water in the inner container 3 can be discharged out of the dishwasher only through the drain pipe 51, the first water inlet 114 and the first water outlet 115. When the drainage pump 5 of the dishwasher is in a non-working state, the electrically controlled valve can partially close or completely unblock the vent 113, at this time, the vent 113 is communicated with the first water outlet 115 through the first cavity 111 and the second cavity 112, the first water outlet 115 is communicated with the outside, that is, the air of the inner container 3 is communicated with the outside air, the air pressure in the inner container 3 is equal to the outside atmospheric pressure, that is, the inner container 3 and the drainage pipe 51 form a communicating vessel. According to the principle of the communicating vessel, the water in the inner container 3 does not flow to the first water inlet 114 and the first water outlet 115 through the water discharge pipe 51, the water in the inner container 3 is effectively prevented from flowing out of the water discharge pipe 51, and the wastewater can be prevented from flowing back to the inner container 3 from the water discharge pipe 51. It will be appreciated that when the plug 12 is a valve, the first partition 13 may not be provided in the anti-siphon structure 1, i.e. the interior of the body 11 is a cavity, and need not be divided into two cavities.

In one embodiment, referring to fig. 3-5, the body 11 includes a first inner wall surface 112a defining a second cavity 112, and a second divider 116 is disposed within the second cavity 112. The second separator 116 is a sheet-like structure including a first end 116a and a second end 116b disposed opposite to each other. The first end 116a is fixed on the first inner wall 112a, and the second end 116b is a free end. I.e., the second divider 116 does not completely divide the second cavity 112. Specifically, the second partition 116 divides the second cavity 112 into a first portion 112c and a second portion 112d, the first portion 112c is communicated with the second portion 112d, a first water inlet 114 is formed in a side wall of the first portion 112c, and a first water outlet 115 is formed in a side wall of the second portion 112 d. Further, the body 11 further includes a second inner wall surface 112b forming the second cavity 112, the first inner wall surface 112a is connected to the second inner wall surface 112b, the second inner wall surface 112b is provided with a first water inlet 114, and a distance from the free end to the first inner wall surface 112a is greater than a distance from the first water inlet 114 to the first inner wall surface 112 a. The distance from the first water inlet 114 to the first inner wall surface 112a is the maximum distance from the edge of the first water inlet 114 to the first inner wall surface 112 a. Specifically, the first inner wall surface 112a is provided on a surface of the second cavity 112 away from the first partition 13, and the second inner wall surface 112b is provided perpendicular to the first inner wall surface 112 a. The second partition 116 is disposed perpendicularly to the first inner wall surface 112a and in parallel with the second inner wall surface 112 b. The first water inlet 114 is disposed near the junction of the first inner wall surface 112a and the second inner wall surface 112 b. The first water outlet 115 is opened on the first inner wall surface 112a, and the first water outlet 115 and the first water inlet 114 are respectively provided on both sides of the second partition 116.

Thus, during draining of the dishwasher, the waste water in the drain pipe 51 enters the first portion 112c through the first water inlet 114, and then bypasses the second partition 116 to enter the second portion 112d of the second cavity 112 and is discharged to the outside of the dishwasher through the first water outlet 115 of the second portion 112 d. Thus, the second partition 116 prevents the water in the drain pipe 51 from flowing out of the first water outlet 115 after the drain pump 5 of the dishwasher is stopped. In one embodiment, referring to fig. 6 to 8, a dishwasher includes a spray arm structure 31, a first tank 7, a main wash pump 6, and the anti-siphon structure 1 as described above.

Since the dishwasher comprises the anti-siphon structure 1 according to any of the above embodiments, the technical effects are brought by the anti-siphon structure 1, and the beneficial effects already include the beneficial effects of anti-siphon, so that the detailed description is omitted here.

Further, referring to fig. 1, 6 and 8, the first water tank 7 and the spray arm structure 31 are both disposed in the inner container 3, and the main wash pump 6 is disposed outside the inner container 3 and communicated with the first water tank 7. The spray arm structure 31 includes a flow guide tube 311 and a spray arm housing 312, the flow guide tube 311 includes a water outlet end 311a, the water outlet end 311a is disposed inside the spray arm housing 312, one end of the flow guide tube 311 far from the water outlet end 311a is communicated with the main washing pump 6, the water outlet end 311a is provided with an annular extension portion 311b, and the annular extension portion 311b is attached to the inner wall of the spray arm housing 312. The water in the first water tank 7 is pressurized by the main washing pump 6 and then transported to the water outlet 311a of the draft tube 311, and is sprayed to the dishes to be washed through the holes formed in the spray arm housing 312. Thus, the annular extension part 311b is attached to the inner wall of the spray arm housing 312, which can effectively prevent water from overflowing from the connection between the water outlet end 311a of the flow guide pipe 311 and the spray arm housing 312, and is beneficial to improving the water utilization rate and the cleaning efficiency of the dishwasher.

Specifically, referring to fig. 1, 6 and 7, the spray arm structures 31 may be disposed at the bottom of the liner 3, or the spray arm structures 31 may be disposed at both the top and the bottom of the liner 3, and the number and specific positions of the spray arm structures 31 are not specifically limited herein. For example, when the spray arm structures 31 are respectively provided at the top and bottom of the tub 3, the main wash pump 6 is provided on the pedestal 4 of the dishwasher. One end of the main washing pump 6 is communicated with the first water tank 7 in the inner container 3, the main washing pump 6 is further respectively connected with the first main washing pipeline 61 and the second main washing pipeline 62, wherein the main washing pump 6 is connected with the spray arm structure 31 at the top of the inner container 3 through the first main washing pipeline 61, and the main washing pump 6 is connected with the spray arm structure 31 at the bottom of the inner container 3 through the second main washing pipeline 62. Alternatively, when only one spray arm structure 31 is provided at the bottom of the inner tub 3, the main wash pump 6 is provided on the pedestal 4 of the dishwasher. One end of the main washing pump 6 is communicated with the first water tank 7 in the inner container 3, the main washing pump 6 is only connected with the second main washing pipeline 62, and the main washing pump 6 is connected with the spray arm structure 31 at the bottom of the inner container 3 through the second main washing pipeline 62.

Further, referring to fig. 1 and 2, the dishwasher further includes a second water tank 8 and a first water inlet pipe 81, both ends of the first water inlet pipe 81 are respectively communicated with the first water tank 7 and the second water tank 8; an electrolytic member (not shown) is provided in the second water tank 8. An electrolytic component is arranged in the second water tank 8 for electrolyzing water. Water molecules are decomposed under the action of current to form hydrogen cations (H +) and oxygen anions (O-), so that hydroxyl groups are formed, and the hydroxyl groups can quickly oxidize organic matters which are difficult to decompose. So, the water after the electrolysis flows to the first water tank 7 through the first water inlet pipe 81 and is used for washing the tableware, and the hydroxyl in the water after the electrolysis makes the organic matter on the tableware oxidized rapidly and is convenient for wash, and the cleaning efficiency of the dish washer can be effectively improved.

Further, referring to fig. 1 and 2, the dishwasher further includes a second inlet pipe 82 and a feed valve 2, and both ends of the second inlet pipe 82 are respectively communicated with the feed valve 2 and the second tank 8. Specifically, the water inlet valve 2 is disposed on the base 4 of the dishwasher for introducing clean water from the outside, such as connecting the water inlet valve 2 with an external tap water pipe, and the clean water enters the second water tank 8 along the second water inlet pipe 82 for electrolysis. The electrolyzed water is then passed through the first water inlet pipe 81 to the first water tank 7. Further, the dishwasher further comprises a heating plate 9, wherein the heating plate 9 is electrically connected to the first water tank 7 and used for heating water in the first water tank 7. In this way, the electrolyzed water is heated in the first water tank 7, and since the main wash pump 6 communicates with the first water tank 7, the main wash pump 6 pressurizes the heated water and flows into the spray arm structure 31 through the first main wash pipe 61 and the second main wash pipe 62. The hot water is sprayed to the tableware from the spray arm structure 31, so that oil stains on the tableware can be removed efficiently, and the cleaning efficiency and the cleaning quality of the dish-washing machine are improved.

In one embodiment, referring to fig. 1 and 2, the dishwasher further includes a filter 32. The filter 32 is disposed in the inner container 3 for filtering large food residues in the wastewater, and the filtered wastewater is discharged to the outside of the dishwasher through the drain pipe 51 and the first water outlet 115 of the anti-siphon structure 1. Further, the first water outlet 115 is externally connected with a pipe for discharging the waste water to a sewer or a waste water tank.

The anti-siphon structure 1 provided by the embodiment comprises a body 11 and a plug 12 in the body 11, and is simple and compact in structure, beneficial to reducing the occupied space and reducing the production cost.

In the process of draining water in the drain pipe 51 of the dishwasher, the water level in the inner container 3 is reduced, the air pressure is reduced, and the air pressure is lower than the external atmospheric pressure, at this time, the plug 12 blocks the vent 113, so that the wastewater can be prevented from flowing back to the inner container 3 from the first water inlet 114 and the vent 113 of the anti-siphon structure 1 body 11 in sequence to pollute the environment of the inner container 3. The waste water in the inner container 3 can be discharged out of the dishwasher only through the drain pipe 51, the first water inlet 114 and the first water outlet 115. When the drainage pump 5 of the dishwasher is in a non-working state, the plug 12 does not block the vent 113, at this time, the vent 113 is communicated with the first water outlet 115 through the first cavity 111 and the second cavity 112, the first water outlet 115 is communicated with the outside, namely, the air of the inner container 3 is communicated with the outside air, the air pressure in the inner container 3 is equal to the outside atmospheric pressure, namely, the inner container 3 and the drainage pipe 51 form a communicating vessel. According to the principle of the communicating vessel, the water in the inner container 3 cannot flow to the first water inlet 114 and the first water outlet 115 through the water discharge pipe 51, the water in the inner container 3 is effectively prevented from flowing out of the water discharge pipe 51, and the wastewater can be prevented from flowing back to the inner container 3 from the water discharge pipe 51.

In addition, the flow guide tube 311 of the spray arm structure 31 of the dishwasher is provided with the annular extension 311b, and the annular extension 311b is attached to the inner wall of the spray arm housing 312, so that water can be effectively prevented from overflowing from the joint of the water outlet end 311a of the flow guide tube 311 and the spray arm housing 312, and the water utilization rate and the cleaning efficiency of the dishwasher can be improved. Further, be equipped with second water tank 8 in the dish washer, set up the electrolysis part in the second water tank 8 and be used for the brineelectrolysis, the water after the electrolysis flows to first water tank 7 through first inlet tube 81 and is used for the washing, effectively improves dish washer's clean efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An anti-siphon structure for being disposed in a dishwasher, the anti-siphon structure comprising:

2. The anti-siphon structure according to claim 1, further comprising a first partition provided in the body for dividing the interior of the body into a first cavity and a second cavity, the plug being provided in the first cavity, and the vent being provided in a sidewall of the first cavity; the first water inlet and the first water outlet are arranged on the side wall of the second cavity.

3. The anti-siphon structure according to claim 2, wherein the first separator is provided with a notch, and the first cavity is communicated with the second cavity through the notch.

4. The anti-siphon structure according to claim 2, wherein the plug member is a PP plastic member; or, the plug member is a valve, and the valve is arranged in the first cavity and used for controlling the opening degree of the vent.

5. The anti-siphon structure according to claim 2, wherein the body comprises a first inner wall surface forming the second cavity, a second partition is arranged in the second cavity, the second partition comprises a first end and a second end which are oppositely arranged, the first end is fixedly arranged on the first inner wall surface, and the second end is a free end;

6. The anti-siphon structure according to claim 5, characterized in that the body further comprises a second inner wall surface forming the second cavity, the first inner wall surface and the second inner wall surface are connected, the first water inlet is provided on the second inner wall surface, and a distance from the free end to the first inner wall surface is greater than a distance from the first water inlet to the first inner wall surface.

7. A dish washing machine is characterized by comprising a spray arm structure, a first water tank, a main washing pump and an anti-siphon structure according to any one of claims 1 to 6, wherein the first water tank and the spray arm structure are arranged in an inner container, and the main washing pump is arranged outside the inner container and communicated with the first water tank;

8. The dishwasher of claim 7, further comprising a second water tank and a first water inlet pipe, wherein both ends of the first water inlet pipe are respectively communicated with the first water tank and the second water tank; an electrolytic component is arranged in the second water tank.

9. The dishwasher of claim 8, further comprising a second inlet pipe and a feed valve, wherein both ends of the second inlet pipe are respectively communicated with the feed valve and the second water tank.

10. The dishwasher of claim 7, further comprising a vent pipe, wherein one end of the vent pipe is communicated with the vent hole, and the other end of the vent pipe is communicated with the inner container.