CN219242311U

CN219242311U - Exhaust structure for submersible pump, built-in miniature submersible pump and electric appliance

Info

Publication number: CN219242311U
Application number: CN202223500083.XU
Authority: CN
Inventors: 李宝龙; 欧家明; 程斯奇; 张彦超; 梁浩
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-23
Anticipated expiration: 2032-12-23

Abstract

The utility model provides an exhaust structure for a submersible pump, a built-in miniature submersible pump and an electric appliance, and belongs to the technical field of submersible pumps, wherein the exhaust structure comprises an exhaust hole arranged on one side of a water pump impeller and a water passing port arranged on the water pump impeller, and the exhaust hole is arranged on the water inlet side of the water pump impeller along the circumferential direction of the water pump impeller; the water passing port is arranged opposite to the air exhaust hole. The exhaust structure is stable and reliable, can solve the problem of trapping air in operation of the submersible pump, reduces the operation noise of the water pump, and can not influence the flow and the lift of the water pump.

Description

Exhaust structure for submersible pump, built-in miniature submersible pump and electric appliance

Technical Field

The utility model relates to the technical field of submersible pumps, in particular to an exhaust structure for a submersible pump, a built-in miniature submersible pump and an electric appliance.

Background

The submersible pump is a water treatment tool with very wide application, and is different from a common water pump in that the submersible pump works under water, and most of the water pump works on the ground and generally comprises a pump body, a motor and an impeller, wherein a water inlet and a water outlet are formed in the pump body, the motor is started to drive the impeller to rotate, and water is driven to enter from the water inlet and then is discharged from the water outlet. The miniature submersible pump is a common component for conveying liquid on household appliances such as a humidifier, a cooling fan and the like. When the impeller of the submersible pump rotates at a high speed, the pressure of each area in the cavity of the water pump is different, and the gas in the pump cannot be discharged from the water outlet along with water. Due to the pressure, bubbles will collect in the low pressure area of the impeller close to the shaft and form a vortex there. This can lead to the water pump operation unstable, flow and lift drop sharply and accompany great noise for the conveying efficiency of water pump liquid is lower can not satisfy the complete machine demand. In the prior art, bubbles are removed by a method of punching through holes outwards from a plane parallel to the impeller in a water pump cavity, but the flow and the lift of the water pump are greatly attenuated by the scheme, so that the performance of the whole machine is influenced.

Accordingly, there is a need for improvements in the venting structure of existing submersible pumps to ensure the performance of the submersible pump.

Disclosure of Invention

In order to overcome the problems in the related art, one of the purposes of the utility model is to provide an exhaust structure for a submersible pump, which is stable and reliable, can solve the problem of air trapping during operation of the submersible pump, reduces the operation noise of the water pump, and does not affect the flow and the lift of the water pump.

An exhaust structure for a submersible pump, comprising:

the exhaust hole is arranged at one side of the water pump impeller and is arranged at the water inlet side of the water pump impeller along the circumferential direction of the water pump impeller;

the water passing port is arranged on the water pump impeller, and the water passing port and the exhaust hole are oppositely arranged.

In a preferred technical scheme of the utility model, the water pump impeller comprises a shaft body and a plurality of blades, wherein the blades are uniformly distributed on the side wall of the shaft body along the circumferential direction of the shaft body;

the exhaust holes are arranged in a plurality, the exhaust holes form an exhaust ring on the water inlet side of the water pump impeller, and the axis of the exhaust ring is overlapped with the axis of the shaft body.

In the preferred technical scheme of the utility model, the water passing ports are arranged at the connection positions of the blades and the shaft body, and the water passing ports are arranged at the connection positions of each blade and the shaft body.

In a preferred technical scheme of the utility model, the height of the shaft body is H, and the depth of the water passing hole is H along the axial direction of the shaft body, wherein h=1/2H.

In the preferred technical scheme of the utility model, the length of the blade is L, and the width of the water passing port is d along the diameter direction of the shaft body, wherein d=1/4L-1/5L.

In the preferred technical scheme of the utility model, the diameter of the exhaust hole is 1mm-2mm.

The second object of the utility model is to provide a built-in miniature submersible pump, which comprises a main body, wherein the main body is provided with the water pump impeller, the water inlet side of the water pump impeller is provided with an impeller cover, and the impeller cover is provided with the exhaust hole.

In the preferred technical scheme of the utility model, the impeller cover is provided with a water inlet chamfer, and the axis of the water inlet chamfer is coincident with the axis of the impeller; the exhaust hole is arranged at the edge of the water inlet chamfer.

In the preferred technical scheme of the utility model, the utility model also comprises a front cover; the front cover is arranged on the outer side of the impeller cover along the flowing direction of water flow; the front cover is provided with a plurality of water guide holes; the front cover is provided with a hollowed-out opening, and the hollowed-out opening corresponds to the water inlet chamfer opening.

It is a further object of the present utility model to provide an electrical appliance comprising a built-in miniature submersible pump as described above.

The beneficial effects of the utility model are as follows:

the utility model provides an exhaust structure for a submersible pump, which comprises an exhaust hole arranged on one side of a water pump impeller and a water passing hole arranged on the water pump impeller, wherein the exhaust hole is arranged on the water inlet side of the water pump impeller along the circumferential direction of the water pump impeller; the water passing port is arranged opposite to the air exhaust hole. In practical application, due to the existence of the water passing port, bubbles in the cavity can gradually move and converge in a low-pressure area close to the center of the impeller shaft of the water pump when the water pump runs, and the bubbles are discharged from the air exhaust hole under the action of pressure. The cavity of the water pump is not provided with bubbles, the pressure distribution is uniform, and the drainage basin is stable, so that the water pump impeller can work stably. The air trapping problem of the water pump is effectively solved, the running noise of the water pump is reduced, and the flow and the lift of the water pump are not influenced.

The utility model provides a still provide the built-in miniature immersible pump of adopting above-mentioned exhaust structure and including this built-in miniature immersible pump's electrical apparatus, this immersible pump operation is stable, noise is low in operation, and the lift can not diminish because of exhaust structure's existence moreover.

Drawings

FIG. 1 is a perspective view of a submersible pump exhaust structure provided by the utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a perspective view of a water pump impeller provided by the present utility model;

fig. 4 is a perspective view of the built-in miniature submersible pump provided by the utility model.

Reference numerals:

1. a main body; 2. a water pump impeller; 21. a blade; 3. an impeller cover; 31. a water inlet chamfer; 4. a front cover; 41. a water guide hole; 42. a hollowed-out opening; 22. a shaft body; 100. an exhaust hole; 200. and (5) a water passing port.

Detailed Description

Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Examples

As shown in fig. 1-3, the present application proposes an exhaust structure for a submersible pump, including:

an exhaust hole 100 provided at one side of the water pump impeller 2, the exhaust hole 100 being arranged at the water intake side of the water pump impeller 2 in the circumferential direction of the water pump impeller 2;

and a water passing port 200 arranged on the water pump impeller 2, wherein the water passing port 200 is arranged opposite to the air exhaust hole 100.

Specifically, the water pump impeller 2 includes a shaft body 22 and a plurality of blades 21, wherein the blades 21 are uniformly distributed on the side wall of the shaft body 22 along the circumferential direction of the shaft body 22;

the plurality of exhaust holes 100 are provided, the plurality of exhaust holes 100 form an exhaust ring on the water inlet side of the water pump impeller 2, and the axis of the exhaust ring coincides with the axis of the shaft body 22. The number of the air discharge holes 100 may be 3 to 6, and more preferably, the diameter of the air discharge holes 100 is 1mm to 2mm. The vent 100 is used to vent foam from the cavity of the water pump. In practical application, the exhaust hole 100 is arranged at the water inlet of the water pump, when the water pump impeller 2 operates, a low-pressure area is formed at the water passing port 200, and under the action of pressure, bubbles in the water pump cavity gradually move to the water passing port 200 of the water pump impeller 2. And the bubbles at the water passing port 200 are discharged from the air discharging hole 100 by the pressure.

The exhaust structure for the submersible pump comprises an exhaust hole 100 arranged on one side of the water pump impeller 2 and a water passing port 200 arranged on the water pump impeller 2, wherein the exhaust hole 100 is arranged on the water inlet side of the water pump impeller 2 along the circumferential direction of the water pump impeller 2; the water passing port 200 is disposed opposite to the air discharging hole 100. In practical application, due to the existence of the water passing port 200, bubbles in the cavity gradually move and converge in a low-pressure area near the axial center of the water pump impeller 2 during operation of the water pump, and under the action of pressure, the bubbles are discharged from the air outlet 100. No bubbles exist in the cavity of the water pump, the pressure distribution is uniform, and the drainage basin is stable, so that the water pump impeller 2 can work stably. The air trapping problem of the water pump is effectively solved, the running noise of the water pump is reduced, and the flow and the lift of the water pump are not influenced.

Further, the water passing ports 200 are disposed at the connection positions of the blades 21 and the shaft body 22, and the water passing ports 200 are disposed at the connection positions of each blade 21 and the shaft body 22. The water passing ports 200 are uniformly distributed on the water pump impeller 2 along with the arrangement of the blades 21, so that the uniformity of a low-pressure drainage basin in the center of the water pump impeller 2 is guaranteed.

Further, the height of the shaft 22 is H, and the depth of the water passing opening 200 is H along the axial direction of the shaft 22, wherein h=1/2H; the length of the vane 21 is L, and the width of the water passing port 200 is d along the diameter direction of the shaft 22, wherein d=1/4L-1/5L. The design ensures that a sufficient low-pressure area can be formed at the center of the water pump impeller 2 for exhausting, and ensures that the water pump impeller 2 has a firm structure and stable operation without reducing the lift of the water pump.

The utility model also provides a built-in miniature submersible pump, which comprises a main body 1, wherein the main body 1 is provided with the water pump impeller 2, the water inlet side of the water pump impeller 2 is provided with an impeller cover 3, and the impeller cover 3 is provided with the exhaust hole 100. The impeller cover 3 is fixed on the main body 1 through bolts, and the distance between the impeller cover 3 and the top of the water pump impeller 2 is designed according to actual needs.

The submersible pump is stable in operation and low in working noise, and the lift cannot be reduced due to the existence of an exhaust structure.

Further, the impeller cover 3 is provided with a water inlet chamfer 31, and the axis of the water inlet chamfer 31 coincides with the axis of the impeller; the exhaust hole 100 is provided at the edge of the water inlet chamfer 31.

The flow area of the water inlet chamfer 31 is gradually reduced along the flow direction of the water flow. When the water inlet chamfer 31 is applied to a submersible pump, it is coaxial with the impeller of the submersible pump. The design can make the water inlet chamfer 31 play the role of guiding water flow, so that the water flow entering the submersible pump is more stable, flows through the impeller at a certain angle, and is beneficial to prolonging the service life of the impeller. The water inlet chamfer 31 can increase the working efficiency of the submersible pump.

In a preferred embodiment, as shown in fig. 4, the built-in miniature submersible pump further comprises a front cover 4; the front cover 4 is arranged on the outer side of the impeller cover 3 along the flowing direction of water flow; the front cover 4 is provided with a plurality of water guide holes 41; the front cover 4 is provided with a hollowed-out opening 42, and the hollowed-out opening 42 corresponds to the water inlet chamfer opening 31.

The front cover 4 plays a role in protecting the impeller cover 3, and can also guide water flow into the impeller, so that the water flow entering the cavity of the water pump is more stable.

The electric appliance has low operation noise and can provide good use experience for consumers.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application. The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An exhaust structure for a submersible pump, comprising:

an exhaust hole (100) provided on one side of the water pump impeller (2), the exhaust hole (100) being arranged on the water inlet side of the water pump impeller (2) in the circumferential direction of the water pump impeller (2);

the water passing port (200) is arranged on the water pump impeller (2), and the water passing port (200) is arranged opposite to the exhaust hole (100).

2. The exhaust structure for a submersible pump according to claim 1, wherein:

the water pump impeller (2) comprises a shaft body (22) and a plurality of blades (21), wherein the blades (21) are uniformly distributed on the side wall of the shaft body (22) along the circumferential direction of the shaft body (22);

the water pump is characterized in that a plurality of exhaust holes (100) are formed, the exhaust holes (100) are formed on the water inlet side of the water pump impeller (2), and the axis of the exhaust ring is overlapped with the axis of the shaft body (22).

3. The exhaust structure for a submersible pump according to claim 2, wherein:

the water passing ports (200) are arranged at the connection positions of the blades (21) and the shaft body (22), and the water passing ports (200) are arranged at the connection positions of the blades (21) and the shaft body (22).

4. The exhaust structure for a submersible pump according to claim 2, wherein:

the height of the shaft body (22) is H, and the depth of the water passing port (200) is H along the axial direction of the shaft body (22), wherein h=1/2H.

5. The exhaust structure for a submersible pump according to claim 2, wherein:

the length of the blade (21) is L, and the width of the water passing port (200) is d along the diameter direction of the shaft body (22), wherein d=1/4L-1/5L.

6. The exhaust structure for a submersible pump according to any one of claims 1 to 5, wherein:

the diameter of the exhaust hole (100) is 1mm-2mm.

7. A built-in miniature submersible pump, characterized in that: comprising a main body (1), wherein the main body (1) is provided with a water pump impeller (2) as claimed in any one of claims 1-6, the water inlet side of the water pump impeller (2) is provided with an impeller cover (3), and the impeller cover (3) is provided with an exhaust hole (100) as claimed in any one of claims 1-6.

8. The built-in miniature submersible pump of claim 7, wherein:

a water inlet chamfer opening (31) is formed in the impeller cover (3), and the axis of the water inlet chamfer opening (31) coincides with the axis of the impeller; the exhaust hole (100) is arranged at the edge of the water inlet chamfer opening (31).

9. The built-in miniature submersible pump of claim 8, wherein:

also comprises a front cover (4); the front cover (4) is arranged on the outer side of the impeller cover (3) along the flowing direction of water flow; a plurality of water guide holes (41) are formed in the front cover (4); the front cover (4) is provided with a hollowed-out opening (42), and the hollowed-out opening (42) corresponds to the water inlet chamfer opening (31).

10. An electrical appliance, characterized in that: a miniature submersible pump comprising a built-in as claimed in any one of claims 7-9.