CN220045832U - Heating pump and dish washer that has it - Google Patents

Abstract

The utility model discloses a heating pump and a dish washer with the same, wherein the heating pump comprises: a first housing; the heating piece is embedded in the first shell, extends along the circumferential direction of the first shell and has an extending angle larger than 360 degrees, and the overlapped part of the two ends of the heating piece in the circumferential direction of the first shell is a first heating part; and the protector is arranged on the first shell and is used for detecting the temperature of the first shell at the position of the first heating part. According to the heating pump, the heating piece is annular, and the first heating part overlapped in the circumferential direction of the first shell is formed on the heating piece, so that the contact area between the heating piece and the first shell can be increased, and the heating efficiency of the heating piece can be further improved; meanwhile, the protector is arranged on the first shell and used for detecting the temperature of the first shell at the position of the first heating part, so that the protection effect of the protector can be improved, and the use safety of the heating pump is improved.

Description

Heating pump and dish washer that has it

Technical Field

The utility model relates to the technical field of household appliances, in particular to a heating pump and a dish washer with the same.

Background

Along with rapid development of science and technology, automatic household appliances have more functions to better serve people's life, for example, automatic dish washing machines can realize heating liquid in a pump body when driving water flow through the pump body, so that tableware can be cleaned more conveniently, and convenience is provided for people's life.

In the prior art, a heater in a heat pump is usually arranged in a circle inside a pump shell and is in direct contact with liquid in the pump shell, a protector is arranged at the upper part of the pump shell, and when special conditions occur, such as no water or no water full state in a pump cavity, the heater is still in normal operation, and the protector acts to cut off after the heater is heated to a certain temperature. However, the heater is bent into a circle, which can cause the temperature reaching the protection of the protector to be too long, so that the heating pump is easy to generate dangerous situations such as water leakage, electric leakage, ignition and the like.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide a heating pump which can improve the protection effect of a protector and the use safety of the heating pump.

The utility model also provides a dish washer with the heating pump.

A heat pump according to a first aspect of the present utility model includes: a first housing; the heating piece is embedded in the first shell, extends along the circumferential direction of the first shell and has an extending angle larger than 360 degrees, and the overlapped part of the two ends of the heating piece in the circumferential direction of the first shell is a first heating part; and the protector is arranged on the first shell and is used for detecting the temperature of the first shell at the position of the first heating part.

According to the heating pump, the heating piece is annular, and the first heating part overlapped in the circumferential direction of the first shell is formed on the heating piece, so that the contact area between the heating piece and the first shell can be increased, and the heating efficiency of the heating piece can be further improved; meanwhile, the protector is arranged on the first shell and used for detecting the temperature of the first shell at the position of the first heating part, so that the protection effect of the protector can be improved, and the use safety of the heating pump is improved.

According to some embodiments of the utility model, the heating element extends over an angle of greater than 450 ° in the circumferential direction of the first housing.

According to some embodiments of the utility model, the heating element extends helically in radial and axial direction of the first housing in a direction from one end of the heating element towards the other end.

According to some embodiments of the utility model, the first heating part comprises a first section and a second section at both ends of the heating element, respectively, the protector being located between the first section and the second section in a projection plane perpendicular to the axis of the first housing.

According to some embodiments of the utility model, the heating element is integrally formed with the first housing by die casting or by squeeze casting.

According to some embodiments of the utility model, the heating element comprises a working part for heating and a wiring part for connecting electricity, the working part is wrapped in the side wall of the first shell, at least part of the wiring part is located outside the first shell, and the wiring part is electrically connected with the protector.

According to some embodiments of the utility model, the protector is provided on an outer side surface of the first housing, and the protector is connected to the first housing by welding, riveting or screwing.

According to some embodiments of the utility model, the first housing is a metal piece.

According to some embodiments of the utility model, the first housing has a pump chamber and a water inlet in communication with the pump chamber, the water inlet being located at a top of the first housing, the heating element being disposed around the water inlet.

According to some embodiments of the utility model, further comprising: the impeller is arranged in the pump cavity; an end plate, the lower side of the pump cavity is open, and the end plate is covered on the lower side of the pump cavity; the second shell is connected with the first shell and is positioned at the lower side of the end plate; and the motor is arranged on the second shell, and a motor shaft of the motor penetrates through the end plate to be connected with the impeller.

According to some embodiments of the utility model, the second housing is a plastic piece.

According to some embodiments of the utility model, the pump further comprises a volute, wherein the volute is positioned in the pump cavity, the impeller is arranged in the volute, and the volute and the end plate are integrally formed.

A dishwasher according to a second aspect of the utility model comprises a heat pump according to the first aspect of the utility model.

According to the dishwasher of the utility model, the heating pump of the first aspect is arranged, so that the overall performance of the dishwasher is improved.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

FIG. 1 is a cross-sectional view of a heat pump according to an embodiment of the utility model;

FIG. 2 is a top view of a heat pump according to an embodiment of the utility model;

FIG. 3 is a schematic view of the installation of the protector and the heating element;

FIG. 4 is a partial schematic view of a heat pump according to an embodiment of the utility model;

fig. 5 is a partial schematic view of another angle of a heat pump according to an embodiment of the utility model.

Reference numerals:

100. heating the pump;

10. a first housing; 11. a water inlet;

20. a heating member; 21. a working section; 211. a first heating section; 2111. a first section; 2112. a second section; 22. a wiring section;

30. a protector; 31. a protector terminal; 32. a power line;

40. an impeller;

50. an end plate;

60. a second housing;

70. a motor; 71. a motor shaft;

80. and a volute.

Detailed Description

Embodiments of the present utility model 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 and intended to explain the present utility model and should not be construed as limiting the utility model.

A heat pump 100 according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1, a heat pump 100 according to an embodiment of the first aspect of the present utility model includes: the heating element 20 is embedded in the first shell 10, the heating element 20 extends along the circumferential direction of the first shell 10 and has an extending angle larger than 360 degrees, and the part, overlapped in the circumferential direction of the first shell 10, of the two ends of the heating element 20 is a first heating part 211; the protector 30 is provided on the first housing 10 for detecting the temperature of the first housing 10 at the position of the first heating portion 211.

Wherein the first housing 10 has a certain strength, and can provide installation space and supporting function for the heating member 20 and the protector 30; the heating member 20 is mainly used for heating the liquid entering the first housing 10, and the protector 30 is used for detecting the temperature of the first housing 10 to provide overheat protection for the heat pump 100.

Specifically, the heating element 20 is embedded in the first casing 10, that is, the heating element 20 can be isolated from the liquid by the first casing 10, so that the heating element 20 can be prevented from being in direct contact with the liquid, and thus damage to the heat pump 100 caused by electric leakage can be prevented, and the use safety of the heat pump 100 is improved. The circumference of the first housing 10 is a direction surrounding the axis of the heat pump 100, the heating element 20 extends along the circumference of the first housing 10, and the extending angle of the heating element 20 is greater than 360 °, that is, the heating element 20 is annular, and the number of turns of the heating element 20 is greater than one turn, for example, one and half turns, two turns, etc., so that the contact area between the heating element 20 and the first housing 10 can be increased, and the heating efficiency of the heating element 20 can be further increased.

The first heating portion 211 is located at the portion where the two ends of the heating element 20 overlap in the circumferential direction of the first housing 10, so that the heating temperature of the area where the first heating portion 211 is located is higher, the temperature transfer is faster, and the protector 30 is disposed on the first housing 10 for detecting the temperature of the first housing 10 where the first heating portion 211 is located, so that the protection effect of the protector 30 can be improved, and the use safety of the heat pump 100 can be improved.

Further, as shown in fig. 1, for example, the first housing 10 has a cylindrical shape, the heating member 20 is a uniform heating tube, and the heating member 20 extends to be annularly arranged at one side of the upper portion of the first housing 10 near the protector 30. When the heating temperature is too high, the heat transfer time from the heating element 20 to the protector 30 and the reaction time of the protector 30 are reduced due to the fact that the heating element 20 is arranged close to the protector 30, so that the protector 30 can quickly detect abnormal temperature rise of the heating pump 100, the power supply of the heating element 20 is further quickly cut off, the heat transfer time from the heating element 20 to the protector 30 and the reaction time of the protector 30 are reduced, the protection efficiency of the protector 30 can be improved, and the use safety of the heating pump 100 is increased.

According to the heating pump 100 of the embodiment of the present utility model, by providing the heating element 20 in the shape of a ring, and forming the heating element 20 with the first heating portion 211 overlapping in the circumferential direction of the first casing 10, the contact area between the heating element 20 and the first casing 10 can be increased, and thus the heating efficiency of the heating element 20 can be improved; meanwhile, the protector 30 is arranged on the first shell 10 for detecting the temperature of the first shell 10 where the first heating part 211 is located, so that the protection effect of the protector 30 can be improved, and the use safety of the heating pump 100 can be improved.

According to some embodiments of the present utility model, as shown in fig. 3, the heating member 20 extends at an angle greater than 450 ° in the circumferential direction of the first housing 10. For example, the extending angle of the heating member 20 in the axial direction of the first housing 10 may be 460 °, 480 °, 500 °, 540 °, 720 °, and the like. The heating element 20 is annular, and the heating element 20 is greater than 5/4 of a circle, so that the contact area between the heating element 20 and the first housing 10 can be increased by the multi-circle heating element 20, and the heating rate and the heating effect of the heating pump 100 can be improved.

According to some embodiments of the present utility model, as shown in fig. 3, the heating member 20 spirally extends in the radial and axial directions of the first housing 10 in a direction from one end of the heating member 20 toward the other end. The heating element 20 extends spirally along the radial direction and the axial direction of the first housing 10, that is, the heating element 20 may have a tower structure, so that the occupied area of the heating element 20 may be reduced, and meanwhile, the contact area with the first housing 10 may be increased, so that the heating efficiency of the heating element 20 and the heating uniformity of the first housing 10 may be improved.

According to some embodiments of the present utility model, as shown in fig. 3, the first heating part 211 includes a first section 2111 and a second section 2112 at both ends of the heating member 20, respectively, and the protector 30 is located between the first section 2111 and the second section 2112 in a projection plane perpendicular to the axis of the first housing 10. The first section 2111 and the second section 2112 are arranged at intervals in a projection plane perpendicular to the axis of the first housing 10, and then in a region between the first section 2111 and the second section 2112, the heating effect is better, and the heating speed is higher. Therefore, the protector 30 is disposed on the first housing 10 and located between the first section 2111 and the second section 2112 in a plane perpendicular to the axis of the first housing 10, so that the temperature of the first housing 10 can be quickly transferred to the protector 30, and the protection time can be shortened, thereby improving the use safety of the heat pump 100.

According to some embodiments of the present utility model, as shown in fig. 1, the heating member 20 is integrally formed with the first housing 10 by die casting or by squeeze casting. Wherein, the heating element 20 and the first shell 10 are integrally formed, which can reduce the overall space occupation ratio and improve the space utilization ratio, thereby being beneficial to the miniaturization design of the overall equipment; meanwhile, the assembling process of assembling the heating element 20 to the housing can be reduced, and the assembling efficiency of the heat pump 100 can be improved.

Specifically, the die casting is to utilize high pressure to press molten metal into a precise metal mold cavity at high speed, and the molten metal is cooled and solidified under the action of pressure to form a casting. Extrusion casting is a method for solidifying or flowing and forming liquid or semi-solid metal under high pressure to directly obtain a workpiece or blank, and has the advantages of high utilization rate of liquid metal, simplified working procedure, stable quality and the like. Therefore, the heating member 20 and the first housing 10 are integrally formed by die casting or squeeze casting, so that the production speed of the product can be increased, the production cost can be reduced, and the product quality can be improved.

According to some embodiments of the present utility model, as shown in fig. 1, the heating member 20 includes a working portion 21 for generating heat and a wiring portion 22 for receiving electricity, the working portion 21 is wrapped in a sidewall of the first housing 10, at least a portion of the wiring portion 22 is located outside the first housing 10, and the wiring portion 22 is electrically connected with the protector 30. Wherein, the heating element 20 is wrapped in the side wall of the first housing 10, the side wall of the first housing 10 can separate the heating element 20 from the liquid to be heated, so that the heating element 20 can be prevented from being in direct contact with the heating element 20, and the use safety of the heating pump 100 can be improved. The wire connection portion 22 is mainly used for externally connecting a power line 32 to provide electric heating for the working portion 21. The connection portion 22 may be partially located outside the first housing 10 or may be entirely located outside the first housing 10, so that convenience of external connection may be improved. The wire connection portion 22 is electrically connected with the protector 30, and when the temperature is too high, the protector 30 can rapidly cut off the heating of the heating element 20, so that the heating pump 100 can play a role of power-off protection.

Further, as shown in fig. 1, for example, the protector 30 further includes a protector 30 terminal, and the wiring portion 22 of the heating element 20 is connected to the protector 30 terminal through a power wire 32.

According to some embodiments of the present utility model, as shown in fig. 1, the protector 30 is disposed on the outer surface of the first housing 10, and the protector 30 is connected to the first housing 10 by welding, riveting or screw fastening, so that the convenience of installation, disassembly and maintenance of the protector 30 can be improved, and thus the convenience of overall assembly and maintenance of the heat pump 100 can be improved.

For example, as shown in fig. 1, a screw hole is formed in the first housing 10, and the protector 30 is coupled to the first housing 10 by using a screw, so that convenience in installation, removal, and maintenance of the protector 30 can be improved by screwing the first housing 10 with a screw.

According to some embodiments of the present utility model, as shown in fig. 1, the first housing 10 is a metal piece. The metal material has high heat transfer efficiency, high strength and good heat resistance, so that the heat transfer efficiency of the first shell 10 can be improved by manufacturing the first shell 10 by using the metal material, and the heat of the working part 21 of the heating element 20 can be quickly transferred to the fluid, so that the temperature rising speed of the fluid is accelerated, the power consumption can be reduced, and the use cost is reduced; meanwhile, the situation that the first shell 10 is deformed due to high temperature can be effectively avoided by utilizing the metal material with good strength, and therefore the use safety of the heating pump 100 can be improved. In addition, the metal material may include various kinds, for example, aluminum, copper, or other metal materials having good heat conduction and high temperature resistance may be used.

Further, the first housing 10 may be made of aluminum, and the aluminum die casting may be relatively easy to produce complex shapes, so as to reduce the production difficulty and increase the production speed; meanwhile, the aluminum material has higher heat conduction performance, and further the aluminum material is used for manufacturing the first shell 10, so that the heat conduction performance of the first shell 10 can be improved.

According to some embodiments of the present utility model, as shown in fig. 1, the first housing 10 has a pump chamber and a water inlet 11 communicating with the pump chamber, the water inlet 11 is located at the top of the first housing 10, and the heating member 20 is disposed around the water inlet 11. Wherein the water inlet 11 is used for communicating with an external water inlet pipe so as to provide a water source for the pump cavity. The water inlet 11 is arranged at the top of the first shell 10, so that the water inlet 11 can be conveniently connected with a pipeline externally, and further the installation, the disassembly and the maintenance of the heating pump 100 can be improved; meanwhile, when the pump case is not full of water, the position is the first position without water, and the heating part 20 is arranged around the water inlet 11, so that the temperature of the position can be quickly increased, the temperature can be quickly transferred to the protector 30, the transfer time is shortened, and the dry burning and the state that the pump case is not full of water are prevented from being heated, thereby improving the protection effect of the protector 30 and the safety performance of the heat pump 100. According to some embodiments of the utility model, as shown in fig. 1, the heat pump 100 further comprises: impeller 40, end plate 50, second housing 60 and motor 70, impeller 40 locates in the pump cavity; the underside of the pump chamber is open, and an end plate 50 covers the underside of the pump chamber; the second housing 60 is connected to the first housing 10 and is located at the lower side of the end plate 50; the motor 70 is provided to the second housing 60, and a motor shaft 71 of the motor 70 is connected to the impeller 40 through the end plate 50.

Wherein the impeller 40 is located in the pump cavity to provide a pumping function for the heating pump 100; the pump chamber is used for containing liquid, the pump chamber is connected with the water inlet 11, the end plate 50 is used for sealing the pump chamber, and the pump chamber and the first shell 10 together define a containing chamber for containing liquid; the second housing 60 is mainly used for installing the motor 70, providing installation space and protection for the motor 70, and improving the appearance aesthetic property of the heat pump 100; the motor 70 is a core component of the heat pump 100 and is a device for providing power for pumping liquid; the motor shaft 71 is drivingly connected to the impeller 40 through the end plate 50 for driving the impeller 40 to rotate within the pump chamber, thereby pumping fluid for the dishwasher.

When liquid enters the pump cavity from the water inlet 11, the motor 70 is started, the motor shaft 71 of the motor 70 drives the impeller 40 to rotate, the entered low-pressure liquid is converted into high-pressure liquid to be discharged from the water outlet, meanwhile, the heating element 20 is started, and the liquid entering the pump cavity is heated by the heating element 20, so that the liquid from the water outlet is liquid with temperature. In this working process, the protector 30 is always in a working state, detects the temperature of the heating element 20 in real time, and when the temperature is too high, the protector 30 cuts off the heating of the heating element 20 to complete the power-off protection of the heating pump 100.

Further, the first casing 10 and the second casing 60 may be connected by a buckle, which is simpler, and facilitates connection and disassembly of the first casing 10 and the second casing 60, so as to improve the assembly efficiency of the heat pump 100.

According to some embodiments of the utility model, as shown in fig. 1, the second housing 60 is a plastic piece. The second housing 60 mainly plays roles of installing the motor 70 and sealing the pump cavity, and does not need to bear high temperature and strength, so that the plastic part is adopted as the second housing 60, and the production cost and the maintenance cost of the heat pump 100 can be reduced while the use requirement of the heat pump 100 is met. In addition, the plastic material may include various materials, for example, polyurethane plastic or epoxy plastic may be used to make the second housing 60.

According to some embodiments of the present utility model, as shown in fig. 4-5, heating pump 100 further includes a volute 80, volute 80 is located in the pump cavity, impeller 40 is located in volute 80, and volute 80 is integrally formed with end plate 50. Among them, the scroll casing 80 is mainly used for guiding the flow of the liquid driven by the impeller 40, reducing the generation of turbulence, and thus improving the hydraulic efficiency. The end plate 50 is mainly used for closing the pump chamber to form a receiving chamber for receiving liquid. Integrating volute 80 with end plate 50 can reduce the assembly process of heat pump 100, and can further increase the production rate of heat pump 100.

A dishwasher according to an embodiment of a second aspect of the present utility model includes a heat pump 100 according to an embodiment of a first aspect of the present utility model.

According to the dishwasher of the embodiment of the present utility model, by providing the heating pump 100 of the embodiment of the first aspect as described above, the overall performance of the dishwasher is improved.

In the description of the present utility model, 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 utility model 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 utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. 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.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

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 utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model 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 utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A heat pump, comprising:

a first housing;

the heating piece is embedded in the first shell, extends along the circumferential direction of the first shell and has an extending angle larger than 360 degrees, and the overlapped part of the two ends of the heating piece in the circumferential direction of the first shell is a first heating part;

and the protector is arranged on the first shell and is used for detecting the temperature of the first shell at the position of the first heating part.

2. A heat pump according to claim 1, wherein the heating element extends over an angle of greater than 450 ° in the circumferential direction of the first housing.

3. A heat pump according to claim 1, wherein the heating member extends spirally in the radial and axial directions of the first housing in a direction from one end of the heating member toward the other end.

4. A heat pump according to claim 3, wherein the first heating portion comprises a first section and a second section at both ends of the heating element, respectively, the protector being located between the first section and the second section in a projection plane perpendicular to the axis of the first housing.

5. A heat pump according to any one of claims 1-4, wherein the heating element is integrally formed with the first housing by die casting or by squeeze casting.

6. A heat pump according to any one of claims 1 to 4, wherein the heating element comprises a working portion for generating heat and a wiring portion for receiving electricity, the working portion being enclosed within a side wall of the first housing, at least part of the wiring portion being located outside the first housing, and the wiring portion being electrically connected to the protector.

7. A heat pump according to any one of claims 1 to 4, wherein the protector is provided on the outer side surface of the first housing, and the protector is attached to the first housing by welding, riveting or screw fastening.

8. A heat pump according to any one of claims 1 to 4, wherein the first housing is a metal piece.

9. A heat pump according to any one of claims 1 to 4, wherein the first housing has a pump chamber and a water inlet in communication with the pump chamber, the water inlet being located at the top of the first housing, the heating element being disposed around the water inlet.

10. A heat pump according to claim 9, further comprising:

the impeller is arranged in the pump cavity;

an end plate, the lower side of the pump cavity is open, and the end plate is covered on the lower side of the pump cavity;

the second shell is connected with the first shell and is positioned at the lower side of the end plate;

and the motor is arranged on the second shell, and a motor shaft of the motor penetrates through the end plate to be connected with the impeller.

11. A heat pump according to claim 10, wherein the second housing is a plastic piece.

12. A heat pump according to claim 10, further comprising a volute within the pump chamber, the impeller being disposed within the volute, the volute being integrally formed with the end plate.

13. A dishwasher, characterized by comprising a heat pump according to any one of claims 1-12.