CN216589144U

CN216589144U - Washing heating pump and cleaning equipment

Info

Publication number: CN216589144U
Application number: CN202122357500.9U
Authority: CN
Inventors: 朱中存; 李占; 翟延阳
Original assignee: Dreame Innovation Technology Suzhou Co Ltd
Current assignee: Dreame Innovation Technology Suzhou Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-05-24
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a washing heating pump, comprising: the outer pump body is provided with a first cavity and a second cavity which are communicated with each other, and the cross sectional area of the first cavity is larger than that of the second cavity; the heating assembly comprises a heating pipe arranged in the first cavity; the driving assembly comprises a closed impeller arranged in the second cavity and a rotary driving device for driving the closed impeller to rotate; the liquid inlet pipe is used for feeding liquid into the outer pump body; the closed impeller comprises a front cover body, a rear cover body and blades arranged between the front cover body and the rear cover body, wherein the front cover body is provided with a liquid inlet in butt joint with the liquid inlet pipe, and the rear cover body comprises a guide part bent towards the side where the heating pipe is located. The washing heating pump provided by the utility model has higher heating efficiency.

Description

Washing heating pump and cleaning equipment

Technical Field

The utility model belongs to the technical field of water pumps, and particularly relates to a washing heating pump and washing equipment.

Background

Washing equipment, such as dish washer, can automatic clear dish washing, chopsticks, dish, sword, fork etc. tableware, along with the improvement day by day of standard of living, dish washer has gradually gone into masses' life. The dish washer need use hot water to improve clean effect at the during operation, consequently, dish washer need possess the heating function, and the heating system in the present dish washer is independent of the water pump of dish washer, has the calorific loss height, and heating efficiency is low, occupies the condition such as dish washer chassis space is big.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to provide a washing and heating pump with high heating efficiency.

In order to solve the above technical problems, the present invention provides a washing heat pump, including:

a washing heat pump comprising:

the pump comprises an outer pump body, a first cavity and a second cavity, wherein the first cavity and the second cavity are communicated with each other;

the heating assembly comprises a heating pipe arranged in the first cavity;

the driving assembly comprises a closed impeller arranged in the second cavity and a rotary driving device for driving the closed impeller to rotate; and

the liquid inlet pipe is used for feeding liquid into the outer pump body;

the closed impeller comprises a front cover body, a rear cover body and blades arranged between the front cover body and the rear cover body, wherein the front cover body is provided with a liquid inlet in butt joint with the liquid inlet pipe, and the rear cover body comprises a guide part bent towards the side where the heating pipe is located.

In one embodiment, the first cavity and the second cavity are coaxially arranged.

In one embodiment, the angle a between the outer edge of the guide and the axis of rotation of the shrouded impeller is in the range 55 ° to 70 °.

In one embodiment, the shortest distance L between the heating pipe and the front cover body ranges from: the shortest distance L is more than 2mm and less than or equal to 3 mm.

In one embodiment, the liquid inlet pipe comprises a conical pipe portion extending into the liquid inlet.

In one embodiment, an included angle B between the inner surface of the conical pipe portion and the central line of the conical pipe portion ranges from: the included angle B is more than or equal to 10 degrees and less than 20 degrees.

In one embodiment, the heating assembly further comprises a housing connected to the heating tube, the outer pump body comprises a first end forming the first cavity, and the housing is connected to the outer pump body and encloses the first end.

In one embodiment, the housing includes a ring portion surrounding an outer circumferential surface of the outer pump body, and the ring portion is riveted to the outer circumferential surface of the outer pump body.

In one embodiment, the closed impeller further comprises an inner pump body connected with the shell, the shell and the inner pump body are respectively arranged at two ends of the outer pump body, the rotary driving device is connected to the inner pump body, and a driving shaft of the rotary driving device penetrates through the inner pump body to be connected with the closed impeller.

The utility model also provides a cleaning device comprising the washing heat pump as described in any of the above embodiments.

The technical scheme provided by the utility model has the following advantages:

according to the washing and heating pump provided by the utility model, the cross sectional area of the first cavity for accommodating the heating pipe is set to be larger than that of the second cavity for accommodating the closed impeller, so that the flow speed of liquid flowing through the first cavity can be effectively reduced, the retention time of the liquid in the second cavity is prolonged, the heating time of the heating pipe on the liquid is ensured, and the heating efficiency is improved. Furthermore, the rear cover body of the closed impeller is provided with a guide part which is bent towards the side where the heating pipe is located, so that the liquid thrown out from the tail end of the blade can be guided to flow towards the direction of the heating pipe, the heat transfer efficiency of the liquid and the heating pipe is guaranteed, and the heating effect of the liquid is improved.

Drawings

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

Fig. 1 is a schematic perspective view of a washing heat pump according to embodiment 1 of the present invention;

FIG. 2 is a schematic diagram showing a longitudinal sectional structure of the washing heat pump shown in FIG. 1;

fig. 3 is a schematic view of a transverse sectional structure of the washing heat pump shown in fig. 1.

Description of reference numerals:

1-an outer pump body; 1 a-a first end; 4-a liquid inlet pipe; 10-a first cavity; 11-a second cavity; 2-a heating assembly; 20-heating a tube; 210-a ring portion; 21-a housing; 3-a drive assembly; 30-a closed impeller; 31-a rotation drive; 310-a drive shaft; 300-front cover body; 301-rear cover; 302-a blade; 3000-liquid inlet; 3010-a guide; 303-the axis of rotation; 400-a conical tube part; 4001-center line; 4000-inner surface; 5-inner pump body.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. The utility model will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the utility model.

Example 1

The present embodiment provides a washing heat pump. Fig. 1 is a schematic perspective view of a washing heat pump according to the present embodiment; FIG. 2 shows a schematic view of the construction of the washing heat pump shown in FIG. 1 in longitudinal section (section through its axis); fig. 3 is a schematic structural view of a transverse section (a section perpendicular to an axis thereof) of the washing heat pump shown in fig. 1. As shown in fig. 1 to 3, the washing heat pump includes: the pump comprises an outer pump body 1, a heating component 2, a driving component 3 and a liquid inlet pipe 4.

A washing heat pump is understood to be a pump with a heating function for washing an object. The passing liquid can be heated in order to increase the cleaning capacity of the liquid. Washing heat pumps are used for washing appliances, such as dishwashers, washing machines and other household appliances.

The heating assembly 2 is used to heat the liquid to increase the temperature of the liquid flowing therethrough. In particular, the heating assembly 2 comprises a heating tube 20. In order to improve the heating efficiency, the heating pipe 20 is in a spiral shape, and thus, may be called a heating plate.

The drive assembly 3 is used for conveying and pressurizing the liquid. Specifically, the drive assembly 3 includes a shrouded impeller 30 and a rotary drive 31 that drives the shrouded impeller 30 to rotate. The driven rotation of the shrouded impeller 30 creates a negative pressure, under which liquid and air are drawn in an axial direction and then expelled radially outward. More specifically, the rotation driving device 31 is a driving motor.

Wherein, the outer pump body 1 is formed with a first cavity 10 and a second cavity 11 which are communicated with each other. The heating pipe 20 is disposed in the first cavity 10, and the closed impeller 30 is disposed in the second cavity 11. Wherein the cross-sectional area of the first cavity 10 is larger than that of the second cavity 11, and the liquid is pressurized and thrown out by the closed impeller 30 in the second cavity 11, flows to the first cavity 10, exchanges heat with the heating pipe 20 in the second cavity 10, and is finally discharged outwards. In this embodiment, the cross-sectional area of the first cavity 10 is greater than that of the second cavity 11, so that the speed of the liquid flowing out from the closed impeller 30 at a high speed is slowed down when the liquid flows into the second cavity 10 with a larger cross-sectional area, the residence time of the liquid in the second cavity 10 is prolonged, the heat exchange time of the liquid in the second cavity 10 and the heating pipe 20 is also prolonged, and the heating efficiency of the liquid is improved. On the other hand, the cross-sectional area of the second cavity 10 is larger, so that a heating pipe 20 with a larger volume can be arranged, the total heat productivity of the heating pipe 20 is improved, and the heating efficiency of the liquid is further ensured. The cross-sectional areas of the first cavity and the second cavity are both referred to the axis of the shrouded impeller, and the cross-sections of the first cavity and the second cavity perpendicular to the axis of the shrouded impeller are defined as cross-sections.

Specifically, the shrouded impeller 30 includes a front shroud 300, a rear shroud 301, and a vane 302 disposed between the front shroud 300 and the rear shroud 301. The middle part of preceding lid 300 is formed with inlet 3000, and feed liquor pipe 4 is used for introducing liquid into outer pump body 1 in, and the play liquid end of feed liquor pipe 4 docks with inlet 3000, and liquid gets into between the blade 302 of closed impeller 30 through feed liquor pipe 4, inlet 3000 in proper order, is driven by blade 302 rotatory, from the radial outwards discharge of blade 302. The rear cover body 301 comprises a guide part 3010 bent towards the side where the heating pipe 20 is located, and can guide the liquid thrown from the tail end of the blade 302 to flow towards the direction of the heating pipe 20, so that the heat transfer efficiency between the liquid and the heating pipe 20 is guaranteed, and the heating effect of the liquid is improved.

The washing heat pump that this embodiment provided sets the cross-sectional area through the first cavity that will accept the heating pipe to be greater than the cross-sectional area of the second cavity of accepting the closed impeller, can effectively reduce the velocity of flow of liquid through first cavity, and the dwell time of extension liquid in the second cavity ensures that the heating pipe is long to the heating of liquid, improves heating efficiency. Furthermore, the rear cover body of the closed impeller is provided with a guide part which is bent towards the side where the heating pipe is located, so that the liquid thrown out from the tail end of the blade can be guided to flow towards the direction of the heating pipe, the heat transfer efficiency of the liquid and the heating pipe is guaranteed, and the heating effect of the liquid is improved.

Since the guide portion 3010 makes the rear cover body 301 closer to the heating pipe 20, that is, closer to the front cover body 300, the area of the circumferential opening of the shrouded impeller is reduced. That is, the inclination angle of the guide portion 3010 enables guiding of the liquid on the one hand, and on the other hand, reduces the area of the circumferential opening of the shrouded impeller, resulting in a reduction in the discharge flow rate thereof. In order to balance the above guiding effect, an included angle a between the outer edge of the guiding portion 3010 and the rotation axis 303 of the shrouded impeller 30 is set to be 55 ° to 70 °, which ensures that the discharge flow rate is in a desired range on one hand, and ensures the guiding effect and improves the liquid heating efficiency on the other hand.

In order to reduce the liquid flow power loss, it is considered that the shrouded impeller 30 generally throws liquid radially and uniformly outward therefrom. In one embodiment, the first cavity 10 and the second cavity 11 are coaxially arranged. Further, the axes of the first cavity 10 and the second cavity 11 are collinear with the axis of the closed impeller 30, so that liquid can uniformly fill the whole first cavity and the whole second cavity and uniformly act on the heating pipe, the hydrodynamic loss is small, the heat exchange is uniform, and the efficiency is high.

In order to ensure that the liquid can come into contact with the heating tube in a more direct path, heat exchange takes place. In one embodiment, the shortest distance L between the heating pipe 20 and the front cover 300 is set to a range of: the shortest distance L is more than 2mm and less than or equal to 3 mm. This distance sets up, can increase the heat-conduction between heating pipe and the liquid, ensures heating efficiency.

In one embodiment, the inlet tube 4 includes a conical portion 400 that extends into the inlet 3000. The cross section of taper pipe portion 400 reduces along the direction that liquid got into gradually, can accelerate the liquid speed of the taper pipe portion 400 of flowing through, promotes the efficiency of fetching water of closed impeller. Specifically, the range of the included angle B between the inner surface 4000 of the cone portion 400 and the centerline 4001 of the cone portion 400 is: the included angle B is more than or equal to 10 degrees and less than 20 degrees.

The heating module 2 and its connection structure will be described in detail below. In this embodiment, the heating tube 20 is an electric heating tube, the outer tube thereof is a metal tube, a high temperature resistance wire connected to a power supply is arranged in the metal tube, a filling material (such as magnesium oxide powder) with good heat conduction performance and insulation performance is filled in a gap portion of the high temperature resistance wire, the heat efficiency is high, the heating is uniform, when current passes through the high temperature resistance wire, the generated heat is diffused to the surface of the metal tube through the filling material and then is transferred to a heated object or air, and the heating purpose is achieved.

In this embodiment, the heating assembly 2 and the outer pump body 1 are integrally assembled into a whole, that is, the heating assembly 2 is integrated on the outer pump body, which is beneficial to the miniaturization of the size of the whole machine and the reduction of the space occupancy rate. Specifically, the heating assembly 2 further includes a housing 21 connected to the heating pipe 20, the outer pump body 1 includes a first end 1a forming the first cavity 10, and the housing 21 is connected to the outer pump body 1 and encloses the first end 1 a. More specifically, the housing 21 includes a ring portion 210 surrounding the outer peripheral surface of the outer cylinder 1, and the ring portion 210 is riveted to the outer peripheral surface of the outer cylinder 1. So, heating element 2 is through the first end 1a of the outer pump body 1 and the fixed assembly of the outer pump body 1, and assembly structure is simple, and is efficient.

The washing and heating pump further comprises an inner pump body 5 connected with the shell 21, and the shell 21 and the inner pump body 5 are respectively arranged at two ends of the outer pump body 1. Specifically, the outer pump body 1 further includes another end opposite to the first end 1a, and the inner pump body 5 is disposed at the other end. The rotary drive 31 is connected to the inner body 5, and its drive shaft 310 passes through the inner body 5 and is connected to the shrouded impeller 30 for driving the shrouded impeller 30 to rotate.

Compared with the prior art, the washing and heating pump provided by the embodiment can obviously improve the heating efficiency of liquid and reduce heat loss.

Example 2

Embodiment 2 of the present invention provides a cleaning apparatus including the washing heat pump according to any of the above embodiments. The cleaning apparatus according to this embodiment is an apparatus for cleaning by pressurizing and heating a liquid by the washing heat pump according to any of the above embodiments. Illustratively, the washing device may be a household appliance, such as a dishwasher, a washing machine, a washer-dryer, or the like.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art may make other variations or modifications without creative efforts, and shall fall within the protection scope of the present invention.

Claims

1. A washing heat pump, comprising:

the pump comprises an outer pump body (1) and a pump body, wherein a first cavity (10) and a second cavity (11) which are communicated with each other are formed, and the cross sectional area of the first cavity (10) is larger than that of the second cavity (11);

the heating assembly (2) comprises a heating pipe (20) arranged in the first cavity (10);

the driving assembly (3) comprises a closed impeller (30) arranged in the second cavity (11) and a rotary driving device (31) for driving the closed impeller (30) to rotate; and

one end of the liquid inlet pipe (4) is communicated with the first cavity (10) and the second cavity (11) and is used for introducing liquid into the outer pump body (1);

the closed impeller (30) comprises a front cover body (300), a rear cover body (301) and blades (302) arranged between the front cover body (300) and the rear cover body (301), wherein the front cover body (300) is provided with a liquid inlet (3000) in butt joint with the liquid inlet pipe (4), and the rear cover body (301) comprises a guide part (3010) bent towards the side where the heating pipe (20) is located.

2. A washing heat pump according to claim 1, characterized in that the first cavity (10) and the second cavity (11) are arranged coaxially.

3. A washing and heating pump according to claim 1, characterised in that the angle a between the outer edge of the guide (3010) and the axis of rotation (303) of the shrouded impeller (30) is in the range 55 ° to 70 °.

4. The washing heat pump according to claim 1, characterized in that the shortest distance L between the heating pipe (20) and the front cover (300) ranges from: the shortest distance L is more than 2mm and less than or equal to 3 mm.

5. A washing heat pump according to claim 1, characterized in that the liquid inlet pipe (4) comprises a conical pipe portion (400) extending into the liquid inlet (3000).

6. The washing heat pump according to claim 5, characterized in that the angle B between the inner surface (4000) of the conical portion (400) and the centerline (4001) of the conical portion (400) ranges from: the included angle B is more than or equal to 10 degrees and less than 20 degrees.

7. A washing and heating pump according to any of claims 1 to 6, characterised in that the heating assembly (2) further comprises a housing (21) connected to the heating pipe (20), the outer body (1) comprising a first end (1a) forming the first cavity (10), the housing (21) being connected to the outer body (1) and enclosing the first end (1 a).

8. A washing and heating pump according to claim 7, characterized in that the casing (21) comprises a ring (210) surrounding the outer peripheral surface of the outer pump body (1), the ring (210) being riveted to the outer peripheral surface of the outer pump body (1).

9. A washing and heating pump according to claim 7, characterized in that it further comprises an inner pump body (5) connected to the casing (21), the casing (21) and the inner pump body (5) being respectively arranged at the two ends of the outer pump body (1), the rotary drive means (31) being connected to the inner pump body (5) and its drive shaft (310) passing through the inner pump body (5) to be connected to the closed impeller (30).

10. A cleaning apparatus, characterized in that it comprises a washing heat pump according to any one of claims 1 to 9.