CN113862971A

CN113862971A - Drain pump and filter piece, washing machine thereof

Info

Publication number: CN113862971A
Application number: CN202010614158.3A
Authority: CN
Inventors: 王超超; 齐玉文; 杨凯; 陈立栋; 戴相花
Original assignee: Suzhou Samsung Electronics Co Ltd; Samsung Electronics Co Ltd
Current assignee: Suzhou Samsung Electronics Co Ltd; Samsung Electronics Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-12-31
Anticipated expiration: 2040-06-30
Also published as: CN113862971B

Abstract

The invention discloses a drainage pump, a filtering piece of the drainage pump and a washing machine. According to the filtering piece of the drainage pump, as the filtering piece is provided with the pipe body, a water inlet channel is formed inside the pipe body after the filtering piece is arranged in the filtering cavity of the drainage pump; because the circumference side of body exit end is provided with the gas outlet, the outer wall of body and filter the cavity promptly and form exhaust passage, then when appearing a large amount of gas in the drain pump, gaseous can be discharged to exhaust passage from the gas outlet to avoid appearing the trapping phenomenon, solved the trapping problem promptly.

Description

Drain pump and filter piece, washing machine thereof

Technical Field

The invention relates to the technical field of drainage of washing machines, in particular to a drainage pump, a filter piece of the drainage pump and a washing machine.

Background

At present, the washing machine adopts the formula drain pump of raising upward to carry out the drainage, sets up filter assembly in the drain pump, can filter the washing water, prevents that impurity such as line bits from getting into the drain pump subassembly and resulting in the drain pump subassembly to become invalid, produces the influence to the performance of drain pump.

Specifically, the drain pump has a filter chamber in which an impeller of the drain pump is located and a drain chamber in which a strainer is located. The waste water after washing the clothes firstly enters the filtering chamber from the water inlet pipe, then enters the drainage chamber after being filtered by the filter screen, and is discharged from the higher drainage pipe under the power action of the drainage pump.

Due to the adoption of the upward drainage, the drainage pump often has the air trapping phenomenon. When air trapping occurs in the drainage pump, the density of water is 1000 times of that of air, so that the centrifugal force applied to the same volume of water is 1000 times of that of the air, and the water is concentrated on the outer side of the pump shell and the air is concentrated on the center of the pump shell under the action of the centrifugal force. Along with the high-speed rotation of drain pump, the pressure of the inside aqueous vapor mixture of cavity of drain pump constantly increases, however, because aqueous vapor mixture's density is lower, leads to the exhaust pressure less, can't support the water column and rise to the height of drain pipe, leads to the unable exhaust of air for the ability of drain pump is lower, even unable normal work, causes the accompanying noise. Moreover, the high pressure water-gas mixture flows back from the drainage chamber to the filtration chamber, blocking water from entering the filtration chamber, further exacerbating the air entrapment.

In summary, how to solve the air trapping problem of the drain pump is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention aims to provide a filter element of a drainage pump, which solves the problem of air trapping of the drainage pump. Another object of the present invention is to provide a drain pump having the above filter member, and a washing machine having the above drain pump.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a filter piece of drain pump, includes body and filter house, wherein, the filter house sets up the body entrance point of body, the circumference side of the body exit end of body is provided with the gas outlet.

Preferably, the pipe diameter of the outlet end of the pipe body is larger than that of the inlet end of the pipe body.

Preferably, the tube body is divergent from the tube body inlet end to the tube body outlet end.

Preferably, the tube is trumpet-shaped.

Preferably, the filter portion is provided on an end face of the inlet end of the tubular body.

Preferably, the filter part is a filter screen.

Preferably, the tube and the filter part are of an integral structure.

According to the filtering piece of the drainage pump, as the filtering piece is provided with the pipe body, a water inlet channel is formed inside the pipe body after the filtering piece is arranged in the filtering cavity of the drainage pump; because the circumference side of body exit end is provided with the gas outlet, the outer wall of body and filter the cavity promptly and form exhaust passage, then when appearing a large amount of gas in the drain pump, gaseous can be discharged to exhaust passage from the gas outlet to avoid appearing the trapping phenomenon, solved the trapping problem promptly.

Based on the filter element of the drainage pump, the invention also provides the drainage pump, which comprises a filter chamber and a drainage chamber which are communicated, wherein a filter element is arranged in the filter chamber, the filter element is the filter element in any one of the above parts, the tube body forms a water inlet channel, the outer wall of the tube body forms an exhaust channel with the filter chamber, and the filter chamber is provided with an exhaust port communicated with the exhaust channel.

Based on the drainage pump provided by the invention, the invention further provides a washing machine, which comprises the drainage pump, wherein the drainage pump is the drainage pump, and the barrel of the washing machine is provided with an exhaust structure communicated with the exhaust port.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a filter member of a drain pump according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a sump pump according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a drain pump according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the filter member of the drain pump according to the embodiment of the present invention includes a tubular body 1 and a filter portion 4, wherein the filter portion 4 is disposed at a tubular body inlet end 11 of the tubular body 1, and a circumferential side of a tubular body outlet end 12 of the tubular body 1 is provided with an air outlet 13.

It will be appreciated that the inlet end 11 of the pipe body is intended to be in sealed connection with the inlet of the filtering chamber 5 of the drain pump, so as to ensure that the water entering the filtering chamber 5 flows into the pipe body 1 from the inlet end 11 of the pipe body. The outlet end 12 of the pipe body is adapted to communicate with the drainage chamber 6 of the drain pump to ensure that filtered water enters the drainage chamber 6.

When the air volume is less, gas outlet 13 helps reducing flow resistance, increases the lift and the flow of drainage pump, strengthens the drainage pump ability, helps gaseous discharge, has prevented the trapping phenomenon. When the air volume is more, the internal channel of body 1 automatically becomes into water channel, and the outer wall of body 1 and the automatic exhaust passage that becomes of filter chamber, the aqueous vapor does not take place to mix, and gaseous independent smooth and easy passageway has helps gaseous emission. Therefore, the filter element of the drain pump increases the density of the gas-liquid mixture inside the drain pump chamber. When the impeller rotating speed and the impeller shape of the drainage pump are unchanged, the outlet pressure of the drainage pump is in direct proportion to the density of the gas-water mixture, so that the density is increased, the drainage and exhaust capacity of the drainage pump can be obviously increased, and the normal work of the drainage pump is ensured.

According to the filtering piece of the drainage pump, as the filtering piece is provided with the pipe body 1, after the filtering piece is arranged in the filtering cavity 5 of the drainage pump, a water inlet channel is formed inside the pipe body 1; because the circumference side of body exit end 12 is provided with gas outlet 13, and the outer wall of body 1 forms exhaust passage with filtering chamber 5 promptly, then when appearing a large amount of gas in the drain pump, gas can be discharged to exhaust passage from gas outlet 13 to the trapping phenomenon has been avoided appearing, the trapping problem has been solved promptly.

The size and number of the air outlets 13 are set according to actual needs, which is not limited in this embodiment.

During the operation of the drainage pump, gas is easy to gather at the top of the outlet section of the pipe body 1. Thus, to facilitate gas venting, the tube outlet end 12 is of a larger diameter than the tube inlet end 11. The specific numerical values of the pipe diameter of the outlet end 12 and the pipe diameter of the inlet end 11 are set according to actual needs, and this embodiment does not limit this.

Preferably, the tube 1 is divergent from the tube inlet end 11 towards the tube outlet end 12. In this way, water flow is facilitated. Of course, the tube body 1 may be a stepped tube, and is not limited to the above embodiment.

Further, the pipe body 1 is formed in a horn shape as shown in fig. 1 and 2.

In order to facilitate the entry of water into the tubular body 1 and the filtration thereof, the filter portion 4 is provided on the end face of the inlet end 11 of the tubular body. Of course, the filter part 4 may be disposed on the inner wall or the outer wall of the inlet end 11 of the tube body, which is not limited in this embodiment.

In the filter member of the drain pump, the filter portion 4 may be another filter member such as a filter net, a filter plate, or a filter element, which is not limited in this embodiment.

In order to simplify the structure and facilitate the installation, the pipe body 1 and the filter part 4 are of an integrated structure. At this time, one end of the pipe body 1 is closed, and the closed end is provided with a filtering hole, which forms the filtering part 4.

In the filter piece of the drainage pump, the pipe body 1 and the filter part 4 can be selected to be of a split structure, and the two are fixedly and hermetically connected.

In order to facilitate the installation of the filter element of the drain pump, the filter element of the drain pump further comprises a mounting seat 3, and the pipe body 1 is fixed on the mounting seat 3. In order to increase the strength, the filter element of the drain pump further comprises a reinforcement 2 connecting the tubular body 1 and the mounting seat 3. The number of the reinforcing members 2 is at least two, and the reinforcing members are distributed along the circumferential direction of the pipe body 1.

Based on the filter member provided in the above embodiment, the present embodiment further provides a drain pump, which includes a filter chamber 5 and a drain chamber 6 that are communicated with each other, and a filter member is disposed in the filter chamber 5, and the filter member is the filter member of the drain pump according to the above embodiment, wherein the pipe body 1 forms a water inlet passage, the outer wall of the pipe body 1 forms a gas exhaust passage with the filter chamber 5, and the filter chamber 5 has a gas exhaust port 7 communicated with the gas exhaust passage.

It will be understood that the tubular body 1 is mounted on the pump casing of the drain pump, and that, when the filter element has the mounting seat 3, the tubular body 1 is fixed to the pump casing by means of the mounting seat 3. The inlet end 11 of the tube is sealingly connected to the inlet of the filter chamber 5 to ensure that water enters the tube 1, i.e. the inlet channel through the filter part 4. Body exit end 12 and the export sealing connection who filters cavity 5, and body exit end 12 and drainage cavity 6 intercommunication, filter cavity 5 promptly and communicate with drainage cavity 6 through body 1, like this, guaranteed that water flows into in drainage cavity 6 from the water inlet channel. The black arrowed lines in fig. 3 indicate the flow direction of the gas in the drain pump, specifically, the gas reaches the gas outlet 7 through the gas discharge passage.

Since the filter member of the drain pump provided in the above embodiment has the above technical effects, and the drain pump provided in the above embodiment includes the filter member of the drain pump, the drain pump provided in the above embodiment also has corresponding technical effects, and details are not described herein again.

Based on the drainage pump provided in the above embodiments, the present embodiment further provides a washing machine, which includes the drainage pump described in the above embodiments, and the drum of the washing machine has a gas exhaust structure communicating with the gas exhaust port 7.

Since the drainage pump provided by the embodiment has the technical effects, and the washing machine has the drainage pump, the washing machine also has corresponding technical effects, and the detailed description is omitted herein.

The type of the washing machine is selected according to actual needs, and the embodiment does not limit the type.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The filtering piece of the drainage pump is characterized by comprising a pipe body (1) and a filtering part (4), wherein the filtering part (4) is arranged at a pipe body inlet end (11) of the pipe body (1), and an air outlet (13) is arranged on the circumferential side of a pipe body outlet end (12) of the pipe body (1).

2. A filter element as claimed in claim 1, characterised in that the tube diameter of the tube outlet end (12) is greater than the tube diameter of the tube inlet end (11).

3. The filter element according to claim 2, wherein the tubular body (1) is divergent from the tubular body inlet end (11) towards the tubular body outlet end (12).

4. The filter according to claim 3, characterized in that the tubular body (1) is trumpet-shaped.

5. A filter element as claimed in claim 1, characterised in that the filter portion (4) is provided on an end face of the inlet end (11) of the tubular body.

6. The filter element according to claim 1, wherein the filter portion (4) is a filter screen.

7. The filter element according to claim 1, characterised in that the tubular body (1) and the filter portion (4) are of one-piece construction.

8. A drain pump comprising a filtering chamber (5) and a draining chamber (6) communicating with each other, a filter element being arranged in the filtering chamber (5), characterized in that the filter element is a filter element according to any one of claims 1 to 7, the tubular body (1) forming a water inlet passage, the outer wall of the tubular body (1) forming an air outlet passage with the filtering chamber (5), the filtering chamber (5) having an air outlet (7) communicating with the air outlet passage.

9. Washing machine comprising a drain pump, characterized in that it is a drain pump according to claim 8, the drum of which has a venting structure communicating with the vent (7).