CN107713939B

CN107713939B - Respirator of dish-washing machine and sink-type dish-washing machine

Info

Publication number: CN107713939B
Application number: CN201711194273.4A
Authority: CN
Inventors: 付安东; 孙凯; 乌守保; 许平平; 仇灿华; 辛载奎
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2017-11-24
Filing date: 2017-11-24
Publication date: 2023-08-29
Anticipated expiration: 2037-11-24
Also published as: CN107713939A

Abstract

The invention discloses a respirator of a dish-washing machine and a sink-type dish-washing machine. The respirator shell is internally provided with a drainage channel and a gas connection channel, the drainage channel is provided with a sewage inlet and a sewage outlet, the gas connection channel is provided with a drainage vent and a breathing port, the drainage vent is communicated with the drainage channel and is positioned between the sewage inlet and the sewage outlet, and the breathing port is communicated with the outside atmosphere. The one-way valve comprises a valve body and a valve core, wherein the valve body is arranged in the air connecting channel, an outer joint and an inner joint are respectively arranged on the opposite side walls of the valve body, the outer joint is communicated with the breathing port, the inner joint is communicated with the drainage vent, the valve core is provided with a limiting part and a blocking part, and the blocking part is suitable for blocking the outer joint. The breather of the dish washer according to the embodiment of the invention is very reliable and stable in a way of opening or closing the breathing port by utilizing the movement of the valve core, and has long service life.

Description

Respirator of dish-washing machine and sink-type dish-washing machine

Technical Field

The invention relates to the field of dish washing equipment, in particular to a respirator of a dish washing machine and a sink type dish washing machine.

Background

In the related art, the one-way valve in the respirator has an excessively simple structure and poor pressure difference balancing capability.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the respirator of the dish-washing machine, which has strong pressure difference balancing capability and can balance the pressure difference more stably.

The invention also aims to provide a sink type dish-washing machine with the respirator of the dish-washing machine.

The respirator of the dish washer according to the embodiment of the invention comprises a respirator shell, wherein a drainage channel and a gas connection channel are defined in the respirator shell, the drainage channel is provided with a sewage inlet and a sewage outlet, the gas connection channel is provided with a drainage vent and a breathing port, the drainage vent is communicated with the drainage channel and is positioned between the sewage inlet and the sewage outlet, and the breathing port is communicated with the outside atmosphere; a one-way valve, the one-way valve comprising: the valve body is arranged in the air connecting channel, an outer connector and an inner connector are respectively arranged on the opposite side walls of the valve body, the outer connector is communicated with the breathing port, and the inner connector is communicated with the water draining vent; the valve core is provided with a limiting part and a blocking part, the limiting part is matched in the inner connector and limits the valve core to move along the extending direction of the inner connector, the blocking part is arranged at one end of the limiting part, which is positioned in the valve body, the valve core is provided with an opening position and a closing position, the blocking part is blocked on the side wall of the valve body, which is provided with the outer connector, and is used for blocking the outer connector, and the blocking part is blocked on the side wall of the valve body, which is provided with the inner connector, and forms an air gap with the inner connector to circulate air.

According to the respirator of the dish washer, the valve core for opening or closing the outer connector communicated with the breathing port is arranged in the air connecting channel, so that the phenomenon that sewage is discharged out of the respirator through the breathing port and the pressure difference in the drainage channel is balanced when the dish washer normally drains water can be well ensured, and the phenomenon that the sewage in the drainage channel flows back is prevented. In addition, the manner of opening or closing the breathing port by the movement of the check sheet is very reliable and stable, and the service life is long.

In some embodiments, the one-way valve further comprises: and the sealing piece is arranged on one side of the valve core, which faces the breathing hole.

Specifically, the sealing element is an O-shaped sealing ring.

In some embodiments, the stop portion and the blocking portion are each cylindrical extending in a direction of movement of the spool.

In some embodiments, the valve cartridge further comprises: the tail part is arranged at one end of the limiting part, which is far away from the plugging part.

Specifically, the cross-sectional dimension of the tail portion gradually increases in a direction away from the blocking portion.

In some embodiments, a sum of a distance of movement of the spool and an axial dimension of the inner interface is less than an axial dimension of the limit.

In some embodiments, the outer port is provided on a top wall of the valve body, the inner port is provided on a bottom wall of the valve body, and the valve spool moves in an up-down direction.

In some embodiments, the valve body is integrally formed on an inner wall of the gas communication channel.

According to an embodiment of the invention, a sink dishwasher comprises a breather of the dishwasher.

According to the sink type dish washer provided by the embodiment of the invention, due to the arrangement of the respirator, when the dish washer is used for draining water normally, sewage can not be drained out of the respirator through the breathing port, the pressure difference in the drainage channel can be balanced, and the phenomenon that sewage in the drainage channel flows back is prevented. In addition, the reliability of the respirator is better, and the service life of the one-way valve of the respirator is longer.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of a respirator according to an embodiment of the present invention.

Fig. 2 is an enlarged view at circle a of fig. 1.

Fig. 3 is a schematic view of a structure in which a spool of a check valve according to an embodiment of the present invention is in a closed position.

Fig. 4 is a schematic structural view of a spool of a check valve in an open position according to an embodiment of the present invention.

Reference numerals:

respirator 100,

A respirator shell 10,

A drainage channel 110, a sewage inlet, a sewage outlet 112,

A gas connecting channel 120, a water draining vent 121, a breathing port 122,

Check valve 20

A valve body 210, an inner joint 213, an outer joint 214,

Valve element 240, limiting portion 241, tapered portion 2411, blocking portion 242, tail portion 243,

And a seal 250.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

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

The specific structure of a respirator 100 of a dishwasher according to an embodiment of the present invention is described below with reference to FIGS. 1-4.

A respirator 100 of a dishwasher in accordance with an embodiment of the present invention includes a respirator housing and a one-way valve 20. The inside of the respirator housing defines a drainage channel 110 and a gas connection channel 120, the drainage channel 110 has a sewage inlet 111 and a sewage outlet 112, the gas connection channel 120 has a drainage vent 121 and a breathing port 122, the drainage vent 121 is communicated with the drainage channel 110 and is positioned between the sewage inlet 111 and the sewage outlet 112, and the breathing port 122 is communicated with the outside atmosphere.

As shown in fig. 2, the check valve 20 includes a valve body 210 and a valve body 240, the valve body 210 is disposed in the air connecting passage 120, an outer port 214 and an inner port 213 are provided on opposite side walls of the valve body 210, the outer port 214 communicates with the breathing port 122, the inner port 213 communicates with the drain vent 121, the valve body 240 has a stopper 241 and a blocking portion 242, the stopper 241 is fitted in the inner port 213 and restricts the valve body 240 to be movable in an extending direction of the inner port 213, the blocking portion 242 is provided at one end of the stopper 241 located in the valve body 210, the valve body 240 has an open position in which the blocking portion 242 is stopped against a side wall of the valve body 210 where the outer port 214 is provided and blocks the outer port 214 (as shown in fig. 3), and an air gap is formed between the blocking portion 242 and the inner port 213 to circulate air (as shown in fig. 4).

The sewage inlet 111 of the respirator 100 communicates with the washing chamber of the dishwasher, and the sewage outlet 112112 is adapted to communicate with a sewer, and the drain vent 121 communicates with the atmosphere. The draining process of the sink type dish washer is as follows: the washing sewage generated in the washing chamber enters the drain passage 110 through the sewage inlet 111 and is then discharged into the sewer through the sewage outlet 112112, thereby realizing the drain process of the sink dishwasher. When the drainage process is stopped, negative pressure is formed in the upstream section of the drainage channel 110, so that water retained in the downstream section of the drainage channel 110 communicated with the sewer has a tendency of backflow due to siphoning, and air in the atmosphere can enter the drainage channel 110 through the drainage vent 121 due to the communication between the drainage vent 121 and the atmosphere so as to balance the pressure difference in the drainage channel 110 and prevent the siphon phenomenon of the drainage channel 110, thereby preventing water in the drainage channel 110 from flowing back into the washing cavity of the sink dishwasher after drainage and ensuring smooth drainage of the retained water in the drainage channel 110.

It will be appreciated that during normal draining of the dishwasher, the flow of waste water is split after entering the drain passage 110, with a portion of the waste water flowing to the waste water outlet 112112 for draining and another portion entering the air connecting passage 120. When the water level is continuously raised and contacts the check sheet, the blocking portion 242 of the valve core 240 seals the outer port 214 of the valve body 210 due to buoyancy, so that sewage cannot flow out of the outer port 214 to the breathing port 122. Thus, it is achieved that when the dishwasher is normally drained, the contaminated water is not discharged out of the respirator 100 through the breathing port 122. In addition, the mode of utilizing the valve core 240 to move and seal the outer interface 214 prevents sewage from leaking out and has high reliability and good stability.

When negative pressure occurs upstream of the drain passage 110, the air pressure in the drain passage 110 is smaller than the external atmospheric pressure, and therefore, the valve body 240 falls back under the action of the external pressure and the gravity of the valve body 240 itself, so that the valve body 240 is stopped against the side wall of the valve body 210, which is disposed on the inner joint 213, and an air gap is formed between the valve body and the inner joint 213 to circulate air. Thereby, the balance of the pressure difference in the drain passage 110 is realized, and the phenomenon that the sewage in the drain passage 110 flows back is prevented. In addition, the limiting portion 241 of the valve core 240 can limit the moving direction of the blocking portion 242, so that the phenomenon that the outer joint 214 is not tightly closed due to the deviation of the blocking portion 242 is prevented.

According to the respirator 100 of the dish washer, the valve core 240 for opening or closing the outer connector 214 communicated with the breathing port 122 is arranged in the air connecting channel 120, so that the condition that sewage is not discharged out of the respirator 100 through the breathing port 122 when the dish washer is normally drained can be well ensured, the pressure difference in the drainage channel 110 can be balanced, and the phenomenon that the sewage in the drainage channel 110 flows back is prevented. In addition, the manner of opening or closing the suction port 122 by the movement of the check sheet is very reliable and stable, and the service life is long.

In some embodiments, as shown in FIG. 2, the check valve 20 further includes a seal 250, the seal 250 being disposed on a side of the valve core 240 facing the breathing orifice 122. This ensures a seal between the plug 242 and the outer port 214 when the valve element 240 is in the closed position, so that no sewage can flow out through the outer port 214 to the breathing opening 122.

Specifically, the seal 250 is an O-ring seal. The sealing effect of the O-ring is better, and of course, the sealing member 250 may be other sealing rings.

In some embodiments, the stop portion 241 and the blocking portion 242 are each cylindrical extending in the direction of movement of the spool 240. Thus, the stopper 241 and the stopper 242 can be easily manufactured, and the stopper 241 and the stopper 242 may be formed in other shapes, for example, rectangular parallelepiped, triangular prism, or the like.

In some embodiments, as shown in fig. 2, the valve core 240 further includes a tail portion 243 provided at an end of the limiting portion 241 away from the blocking portion 242, and the cross-sectional dimension of the tail portion 243 gradually increases in a direction away from the blocking portion 242. It will be appreciated that if the tail 243 is arranged, the limit portion 241 of the valve core 240 may be separated from the inner port 213 when the water level is high, so that when the water level is low, the limit portion 241 may deviate from the inner port 213, which is disadvantageous for the blocking portion 242 to block the outer port 214 when the water level rises again. Therefore, the tail portion 243 having the gradually increasing cross-sectional size provided at the end away from the blocking portion 242 in the direction away from the blocking portion 242 may make it less likely that the stopper portion 241 is separated from the inner joint 213 regardless of the height of the water level. In summary, the core further includes the tail 243 disposed at the end of the limiting portion 241 away from the blocking portion 242, so as to ensure the blocking effect of the blocking portion 242, thereby improving the reliability of the valve core 240.

Advantageously, the maximum cross-sectional dimension of the tail 243 is greater than the inner diameter of the inner interface 213. Thus, no matter how high the water level is, the phenomenon that the limiting part 241 is separated from the inner interface 213 is unlikely to occur, and the reliability of the valve core 240 is further improved.

In some embodiments, the sum of the moving distance of the spool 240 and the axial dimension of the inner joint 213 is less than the axial dimension of the limit portion 241. It will be appreciated that if the axial dimension of the limiting portion 241 is smaller than the moving distance of the spool 240 and the axial dimension of the inner joint 213, the following may occur: first, the valve core 240 moves to the highest point blocking portion 242 still can completely block the outer port 214, which can cause sewage to flow out of the outer port 214. Secondly, the blocking portion 242 blocks the outer joint 214, and the limiting portion 241 is completely separated from the inner joint 213, which may cause the limiting portion 241 to deviate from the inner joint 213 when the water level is lowered, so that the blocking portion 242 cannot completely block the outer joint 214 when the water level rises again. Therefore, the sum of the moving distance of the valve core 240 and the axial dimension of the inner joint 213 is smaller than the axial dimension of the limiting part 241, so that the valve core 240 can be ensured to move to the highest point, the blocking part 242 can be ensured to completely block the outer joint 214, the limiting part 241 can be ensured to be always matched in the inner joint 213, and the blocking effect of the blocking part 242 is ensured.

In some embodiments, as shown in fig. 2, the outer port 214 is provided on the top wall of the valve body 210, the inner port 213 is provided on the bottom wall of the valve body 210, and the valve body 240 moves in the up-down direction. Thus, when the negative pressure in the exhaust passage is small, the valve element 240 may also fall back to the open position under the action of its own gravity to balance the pressure difference in the exhaust passage. Therefore, the outer port 214 is provided on the top wall of the valve body 210, the inner port 213 is provided on the bottom wall of the valve body 210, and the valve body 240 moves in the up-down direction, so that the check valve 20 is very sensitive to the pressure difference in the exhaust passage, thereby enhancing the effect of balancing the pressure difference.

In some embodiments, as shown in fig. 2, a portion of the lower portion of the blocking portion 241 connected to the stopper portion 241 is formed as a tapered portion 2411 having a cross-sectional area that gradually decreases downward, and when the outer peripheral surface of the tapered portion 2411 abuts against the end surface of the inner joint 213, the cross-sectional area of the tapered portion 2411 truncated by the end surface of the inner joint 213 is smaller than the area of the inner joint 213.

It will be appreciated that when the water level in the gas connection channel 120 is low and the valve core 240 is not exceeded, the valve core 240 falls freely under the action of gravity so that the outer peripheral surface of the tapered portion 2411 abuts against the end surface of the inner port 213, and the cross-sectional area of the tapered portion 2411 cut out from the end surface of the inner port 213 is smaller than the area of the inner port 213, so that gas can still enter from the inner port 213 and flow to the drain vent 121. In summary, the tapered portion 2411 ensures that gas can still enter from the inner joint 213 and flow to the drain vent 121 when the water level in the gas connection channel 120 is too low, thereby ensuring the ability of the check valve 20 to balance the internal pressure differential in the drain channel 120.

In some embodiments, the valve body 210 is integrally formed on an inner wall of the gas communication channel 120. Thereby, the production cost of the check valve 20 is reduced, and the assembling process of the check valve 20 is simplified.

The specific construction of a respirator 100 for a dishwasher in accordance with one embodiment of the present invention is described below with reference to FIGS. 1-4.

As shown in fig. 1, the respirator 100 of the present embodiment includes a respirator shell and a one-way valve 20. The inside of the respirator housing defines a drainage channel 110 and a gas connection channel 120, the drainage channel 110 has a sewage inlet 111 and a sewage outlet 112, the gas connection channel 120 has a drainage vent 121 and a breathing port 122, the drainage vent 121 is communicated with the drainage channel 110 and is positioned between the sewage inlet 111 and the sewage outlet 112, and the breathing port 122 is communicated with the outside atmosphere.

As shown in fig. 2, the check valve 20 includes a valve body 210, a valve core 240 and a sealing member 250, the valve body 210 is disposed in the air connecting channel 120, an inner interface 213 is disposed on an outer interface 214 and a bottom wall of the valve body 210, the outer interface 214 is communicated with the breathing port 122, the inner interface 213 is communicated with the drainage vent 121, the valve core 240 includes a limiting portion 241, a blocking portion 242 and a tail portion 243, the limiting portion 241 is fitted in the inner interface 213 and limits the valve core 240 to move in an up-down direction, the blocking portion 242 is disposed at one end of the limiting portion 241 located in the valve body 210, the tail portion 243 is disposed at one end of the limiting portion 241 away from the blocking portion 242 and the cross-sectional dimension of the tail portion 243 is gradually increased in a direction away from the blocking portion 242. The seal 250 is provided on the side of the valve body 240 facing the breathing port 122. The valve body 240 has an open position in which the blocking portion 242 abuts against the side wall of the valve body 210 where the outer port 214 is provided and blocks the outer port 214, and a closed position in which the blocking portion 242 abuts against the side wall of the valve body 210 where the inner port 213 is provided and forms an air gap with the inner port 213 to circulate air.

A tub dishwasher according to an embodiment of the present invention includes a breather 100 of the dishwasher.

According to the sink type dish washer provided by the embodiment of the invention, the breather 100 can better ensure that sewage is not discharged out of the breather 100 through the breathing port 122 when the dish washer is normally drained, and can balance the pressure difference in the drainage channel 110, so that the phenomenon of backflow of sewage in the drainage channel 110 is prevented. In addition, the reliability of the respirator 100 is better, and the service life of the one-way valve 20 of the respirator 100 is longer.

Other constructions of the sump dishwasher according to an embodiment of the present invention, such as a water softener, a sump, etc., and operations thereof are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A respirator of a dishwasher, comprising:

the respirator comprises a respirator shell, wherein a drainage channel and a gas connection channel are defined in the respirator shell, the drainage channel is provided with a sewage inlet and a sewage outlet, the gas connection channel is provided with a drainage vent and a breathing port, the drainage vent is communicated with the drainage channel and is positioned between the sewage inlet and the sewage outlet, and the breathing port is communicated with the outside atmosphere;

a one-way valve, the one-way valve comprising:

the valve body is arranged in the air connecting channel, an outer connector and an inner connector are respectively arranged on the opposite side walls of the valve body, the outer connector is communicated with the breathing port, and the inner connector is communicated with the water draining vent;

the valve core is provided with a limiting part and a blocking part, the limiting part is matched in the inner joint and limits the valve core to move along the extending direction of the inner joint, the blocking part is arranged at one end of the limiting part, which is positioned in the valve body, the valve core is provided with an opening position and a closing position, the blocking part is abutted against the side wall of the valve body, which is provided with the outer joint, and is used for blocking the outer joint, and the blocking part is abutted against the side wall of the valve body, which is provided with the inner joint, and forms an air gap with the inner joint to circulate air;

the sum of the moving distance of the valve core and the axial dimension of the inner interface is smaller than the axial dimension of the limiting part;

the part of the lower part of the plugging part connected with the limiting part is formed into a conical part with the cross-sectional area gradually decreasing downwards, and when the outer peripheral surface of the conical part is stopped on the end surface of the inner joint, the cross-sectional area of the conical part cut out by the end surface of the inner joint is smaller than the area of the inner joint.

2. The respirator of a dishwasher of claim 1, wherein the one-way valve further comprises: and the sealing piece is arranged on one side of the valve core, which faces the breathing hole.

3. The dishwasher respirator of claim 2 wherein the seal is an O-ring seal.

4. The respirator of claim 1, wherein the retainer and the plug are each cylindrical extending in the direction of movement of the valve cartridge.

5. The respirator of a dishwasher of claim 1, wherein the valve cartridge further comprises: the tail part is arranged at one end of the limiting part, which is far away from the plugging part.

6. The dishwasher of claim 5 wherein the tail portion has a cross-sectional dimension that increases progressively in a direction away from the blocking portion.

7. The dishwasher of any one of claims 1-6 wherein the outer port is provided on a top wall of the valve body and the inner port is provided on a bottom wall of the valve body, the valve cartridge being movable in an up-down direction.

8. The dishwasher of any one of claims 1 to 6, wherein the valve body is integrally formed on an inner wall of the gas connection channel.

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