WO2021018094A1 - Heat pump, and household appliance having same - Google Patents

Heat pump, and household appliance having same Download PDF

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Publication number
WO2021018094A1
WO2021018094A1 PCT/CN2020/104894 CN2020104894W WO2021018094A1 WO 2021018094 A1 WO2021018094 A1 WO 2021018094A1 CN 2020104894 W CN2020104894 W CN 2020104894W WO 2021018094 A1 WO2021018094 A1 WO 2021018094A1
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WO
WIPO (PCT)
Prior art keywords
groove
heating
heat
heating element
pump body
Prior art date
Application number
PCT/CN2020/104894
Other languages
French (fr)
Chinese (zh)
Inventor
王松
Original Assignee
佛山市威灵洗涤电机制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山市威灵洗涤电机制造有限公司 filed Critical 佛山市威灵洗涤电机制造有限公司
Publication of WO2021018094A1 publication Critical patent/WO2021018094A1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4285—Water-heater arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer

Definitions

  • This application relates to a household appliance, in particular to a heat pump and a household appliance having the same.
  • the pump cover is provided with a groove, and the heating element is arranged in the groove.
  • the inner side of the heating element is attached to the inner side of the groove to conduct heat.
  • the bottom edge is attached to the bottom edge of the groove for heat conduction.
  • the radial length of the lower bottom side of the heating element is often chosen to increase the overall bonding area, that is, the outer diameter of the pump body is limited. Under the conditions, increase the diameter of the outer side of the heating element. But in this case, on the one hand, the area that can be enlarged on the outer side is limited, on the other hand, the heating element is too close to the pump body.
  • the pump body is often made of non-metallic materials (such as PP, etc.). The heat of the heating element is transferred to the pump body through the pump cover.
  • the heat of the heating element is transferred to the pump body faster , Causing the temperature of the pump body to rise.
  • the test found that the temperature of the pump body under the traditional technology is often close to or even exceed the upper limit of its use, which shortens the service life of household appliances.
  • This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application aims to propose a heat pump to increase the heating contact area while reducing the heat transfer from the heating element to the pump body.
  • This application also aims to propose a household appliance with the above-mentioned heat pump.
  • the heat pump includes: a pump body defining a heating cavity, the pump body having a first end and a second end, the pump body being open at the first end; a pump cover assembly ,
  • the pump cover assembly includes: a thermally conductive cover fitted to the first end of the pump body, a part of the thermally conductive cover is recessed toward the second end of the pump body to form a first groove, A part of the bottom wall of the first groove is recessed toward the second end of the pump body to form a second groove, and the side wall of the second groove is spaced apart from the peripheral wall of the pump body; a heating element,
  • the heating element is arranged in the second groove, the heating element has a heating bottom surface that is thermally connected to the bottom surface of the second groove, and the heating element has a connection with the second groove.
  • the peripheral surface is attached to the heat-conductingly connected heating outer surface.
  • a first groove is provided on the heat-conducting cover, and a second groove is further provided on the bottom wall of the first groove, so that the rigidity of the heat-conducting cover and its restraining ability on the pump body become stronger;
  • the heating element goes deeper into the heating chamber, the liquid in the entire heating chamber absorbs heat from the heat conducting cover faster.
  • the heat conduction area between the heating element and the heat conducting cover can be greatly increased. Increase can reduce thermal resistance, improve heat transfer efficiency, and reduce power loss.
  • the shape of the first groove and the second groove to separate the side wall of the second groove from the pump body, and the second groove is filled with flowable liquid on the outside, the pump body is highly likely to be overheated Lowering can extend the service life of the heat pump.
  • the heating outer side surface is formed as a circular mesa with a diameter gradually increasing from the second end to the first end of the pump body, and the circular mesa is integral with the second groove.
  • the circumferential surface is connected in a thermally conductive manner.
  • the angle between the circumferential surface of the second groove and the bottom surface of the second groove is greater than 90 degrees, and is in the direction from the second end of the pump body to the first end The circumference of the peripheral surface of the second groove gradually increases.
  • an outlet is provided on the bottom wall of the second groove, and the heating element has a ring shape arranged around the outlet.
  • the inner peripheral surface of the heating element is a heating inner surface
  • the included angle between the heating outer surface and the heating bottom surface is greater than the included angle between the heating inner surface and the heating bottom surface .
  • the inner peripheral surface of the heating element is a heating inner surface.
  • the angle between a tangent to any point on the heating inner surface and the heating bottom surface is greater than or equal to 90 degrees.
  • the second groove has an annular shape arranged concentrically with the outlet, and the radial width of the bottom surface of the second groove is at least 1.5 times the radial width of the heating bottom surface,
  • the radial width of the bottom surface of the second groove is the difference between the outer diameter and the inner diameter of the bottom surface of the second groove, and the radial width of the heating bottom surface is the difference between the outer diameter and the inner diameter of the heating bottom surface value.
  • the pump body is provided with a sealing groove on the end surface of the first end
  • the pump cover assembly includes a sealing ring arranged in the sealing groove, and the depth of the first groove is greater than that of the first groove. The depth of the sealing groove.
  • the heating cavity is in the shape of a disc, and the diameter of the heating cavity is at least 3 mm larger than the maximum radial width of the second groove; the maximum radial width of the second groove is The largest dimension of the second groove in a direction perpendicular to the axis of the heating cavity.
  • the pump cover assembly further includes: a heat conductor, the heat conductor is provided between the heating element and the outlet, the heat conductor has a bottom surface of the second groove A thermally conductive bottom surface that is thermally connected, and the thermal conductor has a thermally conductive outer surface that is thermally connected to the inner peripheral surface of the heating element in a fit and thermally conductive manner.
  • the household appliance according to the present application includes the heat pump according to the above-mentioned embodiment of the present application.
  • the heating efficiency can be significantly improved, and the service life can be extended.
  • Fig. 1 is a schematic diagram of the structure of a heat pump in an embodiment.
  • Fig. 2 is a schematic diagram of the structure of the heating element in an embodiment.
  • Fig. 3 is a schematic diagram of the structure of the heat conducting cover in an embodiment.
  • Figure 4 is a schematic diagram of the pump body in an embodiment.
  • Fig. 5 is a schematic view of the structure of a heat conductor in an embodiment.
  • the heat pump 100 according to an embodiment of the present application will be described below with reference to the drawings.
  • the heat pump 100 includes: a pump body 1 and a pump cover assembly 2.
  • the pump body 1 defines a heating chamber V.
  • the pump body 1 has a first end 1A and a second end 1B.
  • the pump body 1 is open at the first end 1A, and the pump cover assembly 2 is fitted to the first end 1A of the pump body 1.
  • the pump cover assembly 2 includes a thermally conductive cover 21 and a heating element 22.
  • the thermally conductive cover 21 is fitted to the first end 1A of the pump body 1, and a part of the thermally conductive cover 21 faces the second end of the pump body 1.
  • 1B is recessed to form a first groove 211, and a part of the bottom wall of the first groove 211 is recessed toward the second end 1B of the pump body 1 to form a second groove 212.
  • the side walls of the second groove 212 and the pump body The peripheral walls of 1 are spaced apart.
  • the heating element 22 is arranged in the second groove 212, the heating element 22 has a heating bottom surface s5 that is thermally connected to the bottom surface s3 of the second groove 212, and the heating element 22 has a peripheral surface s4 attached to the second groove 212. Join the heat-conductingly connected heating outer side s6.
  • the heating pump 100 has a liquid circuit, and the heating chamber V is a part of the liquid circuit.
  • the heat-conducting cover 21 is used to cover one end of the heating chamber V, and the side of the heat-conducting cover 21 facing the heating chamber V is filled with liquid.
  • Most of the heat emitted by the heating element 22 after being energized passes through the heating element
  • the bonding surface between 22 and the heat conducting cover 21 is transferred to the heat conducting cover 21, and the heat received from the heating element 22 is transferred to the liquid flowing in the heating cavity V by the heat conducting cover 21.
  • the so-called hydroelectric separation means that the heating element 22 and the heated liquid are separated by the heat conducting cover 21, which is safer to use and can reduce accidents caused by the heated liquid directly contacting the heating element 22. For example, once a certain abnormality occurs, such as cracking of the pipe wall of the heating element 22, if the water and electricity are not separated, the heated liquid may enter the heating element 22, causing abnormal accidents such as electric leakage of household appliances.
  • a first groove 211 is provided on the heat conducting cover 21, and a second groove 212 is provided on the bottom wall of the first groove 211.
  • the first groove 211 and the second groove 212 are both facing the pump body 1.
  • the second end 1B is recessed.
  • first groove 211 and the second groove 212 are both recessed toward the inside of the heating cavity V, and the heating element 22 is deeper into the heating cavity V than in the existing solution, so that the entire heating cavity V is The liquid absorbs the heat on the heat conducting cover 21 faster.
  • the prior art solution that uses the lower bottom edge of the heating element to be attached to the bottom edge of the groove Compared with the prior art solution that uses the lower bottom edge of the heating element to be attached to the bottom edge of the groove, and the prior art solution that uses the lower bottom edge and the inner side of the heating element to adhere to the inner wall of the groove
  • the heating bottom surface s5 of the heating element 22 is attached to the bottom surface s3 of the second groove 212, but also the heating outer surface s6 of the heating element 22 is attached to the circumference of the second groove 212. If the surface s4 is attached, the heat conduction area between the heating element 22 and the heat conduction cover 21 can be greatly increased, and in the pump body 1 of the same size, the heat conduction area is increased by using the heating outer surface s6 bonding solution very large.
  • the heating outer surface s6 of the heating element 22 does not adhere to the peripheral surface s4 of the second groove 212, the heat transferred from the heating outer surface s6 of the heating element 22 is basically absorbed by the air and conducted to the air. The heat is basically lost as useless power. To reduce the power loss, the area where the heating element 22 and the heat conducting cover 21 are attached can be maximized.
  • the inner side of the additional heating element is selected as the bonding surface, but the diameter of the inner side is small, and the heat transfer area is also small, resulting in large thermal resistance and low heat transfer efficiency.
  • the heating outer surface s6 of the heating element 22 is selected as the bonding surface, and the bonding area is increased greatly, which can reduce the thermal resistance, improve the heat transfer efficiency, and reduce the power loss.
  • a part of the bottom wall of the first groove 211 forms a second groove 212, and the side wall of the second groove 212 is connected to the pump body.
  • the peripheral walls of 1 are spaced apart, and the heating element 22 is arranged in the second groove 212.
  • the above arrangement not only causes the side wall of the second groove 212 to be separated from the first end 1A of the pump body 1, but also the side wall of the second groove 212 is in diameter with the peripheral wall of the pump body 1. It also opened a distance upwards.
  • the second groove 212 is filled with liquid on the radially outer side, and most of the heat conducted from the heating outer surface s6 of the heating element 22 to the peripheral surface s4 of the second groove 212 can be absorbed by the liquid. Because the liquid has fluidity, the temperature of the liquid will not be too high after being heated. In summary, the possibility of the pump body 1 being overheated will be greatly reduced, thereby prolonging the service life of the pump body 1.
  • a first groove 211 is provided on the heat conducting cover 21, and a second groove 212 is further provided on the bottom wall of the first groove 211.
  • the confinement ability of the heating element becomes stronger; and because the heating element goes deeper into the heating cavity V, the liquid in the entire heating cavity V absorbs the heat on the heat conducting cover 21 faster.
  • the heating bottom surface s5 of the heating element 22 is attached to the bottom surface s3 of the second groove 212, and the heating outer side surface s6 of the heating element 22 is attached to the peripheral surface s4 of the second groove 212, and the heating element 22 is connected to the heat conduction
  • the heat conduction area for bonding between the covers 21 can be greatly increased, which can reduce thermal resistance, improve heat transfer efficiency, and reduce power loss.
  • the side wall of the second groove 212 is spaced from the pump body 1, and the second groove 212 is filled with flowable liquid on the outside, and the pump body 1 is heated
  • the possibility of excessively high is greatly reduced, and the service life of the heat pump 100 can be prolonged.
  • the thermally conductive cover 21 is a metal cover, so that the thermally conductive cover 21 has good thermal conductivity, stable thermal conductivity, long service life, and high connection reliability at the end of the pump body 1.
  • all the surfaces of the heating element 22 facing the peripheral surface s4 of the second groove 212 are attached to the peripheral surface s4 of the second groove 212, or the part of the heating element 22 facing the second groove 212
  • the surface of the peripheral surface s4 is in contact with the peripheral surface s4 of the second groove 212.
  • the surface of the heating element 22 facing the circumferential surface s4 of the second groove 212 is also provided with a concave-convex structure, and the circumferential surface s4 of the second groove 212 also forms a shape that fits the aforementioned concave-convex structure, thereby The contact area can be further increased.
  • the heating outer side surface s6 is formed as a surface that gradually expands in a direction from the second end 1B of the pump body 1 toward the first end 1A. With this arrangement, the closer the heating outer side surface s6 is to the first end 1A of the pump body 1, the longer its circumference, which can further increase the contact area with the heat conducting cover 21.
  • the angle a between the tangent line of any point on the heating outer surface s6 and the heating bottom surface s5 is greater than 90 degrees.
  • the bonding heat conduction area of the heating element 22 and the heat conduction cover 21 is further improved compared with the conventional technology, and some can even be increased by more than 30%.
  • the included angle between the circumferential surface s4 and the bottom surface s3 of the second groove 212 is also equal to a, and the angle a is greater than 90 degrees.
  • the angle between the circumferential surface s4 of the second groove 212 and the bottom surface s3 of the second groove 212 is greater than 90 degrees, and is in the direction from the second end 1B of the pump body 1 to the first end 1A , The circumference of the peripheral surface s4 of the second groove 212 gradually increases.
  • the heating outer side surface s6 is formed as a circular mesa with a gradually increasing diameter in the direction from the second end 1B to the first end 1A of the pump body 1, and the circular mesa is integrally attached to the peripheral surface s4 of the second groove 212 Connected thermally. In this way, not only the bonding contact area between the heating outer surface s6 and the heat conducting cover 21 is larger, but the shape of the heating element 22 is also easy to manufacture and process.
  • the bottom wall of the second groove 212 is provided with an outlet 215, and the heating element 22 has an annular shape around the outlet 215.
  • the liquid flows in from the second end 1B of the pump body 1 and flows from the first end 1B of the pump body 1.
  • the end 1A flows out.
  • the outlet 215 may also be provided at the second end 1B of the pump body 1.
  • an inner flange 214 is provided along the outlet 215 of the heat conducting cover 21.
  • the inner peripheral surface of the heating element 22 is a heating inner surface s7.
  • the angle b between any point on the heating inner surface s7 and the heating bottom surface s5 is greater than or equal to 90 degrees.
  • the heating inner side surface s7 of the heating element 22 is a straight cylindrical surface, or in the direction from the second end 1B to the first end 1A of the pump body 1, the heating inner side surface s7 is formed as a circular mesa with a gradually increasing diameter.
  • the included angle a between the heating outer side surface s6 and the heating bottom surface s5 is greater than the included angle b between the heating inner side surface s7 and the heating bottom surface s5.
  • the heating outer surface s6 has a large inclination, which can ensure a larger contact surface with the heat conducting cover 21, and at the same time, the heating inner surface s7 has a smaller inclination, so that the heating element 22 has a more solid structure.
  • the included angle a between the heating outer surface s6 and the heating bottom surface s5 of the heating element 22 > the included angle b between the heating inner surface s7 and the heating bottom surface s5.
  • the radial length of the heating bottom surface s5 of the heating element 22 is smaller than the radial length of the opposite side surface of the heating element 22, and a>b ⁇ 90°.
  • the cross-sectional shape of the heating element 22 perpendicular to the axis of the heat pump 100 is quadrilateral, so that not only the heating element 22 is easy to process, but it is also easier to assemble other parts on the pump cover assembly 2.
  • the cross-sectional shape of the heating element 22 perpendicular to the axis of the heat pump 100 is a right-angled trapezoid.
  • the second groove 212 has an annular shape concentrically with the outlet 215, and the radial width of the bottom surface s3 of the second groove 212 is at least 1.5 times the radial width of the heating bottom surface s5.
  • the radial width of the bottom surface s3 is the difference between the outer diameter and the inner diameter of the bottom surface s3 of the second groove 212
  • the radial width of the heating bottom surface s5 is the difference between the outer diameter and the inner diameter of the heating bottom surface s5.
  • the pump body 1 is provided with a sealing groove 11 on the end surface of the first end 1A
  • the pump cover assembly 2 includes a sealing ring 24 arranged in the sealing groove 11, and the first The depth (ie, the axial dimension) of a groove 211 is greater than the depth of the sealing groove 11. In this way, the support of the pump body 1 to the side wall of the first groove 211 can be improved, and the sealing performance can also be improved.
  • the peripheral wall of the pump body 1 is provided with a flange 12 protruding in a direction away from the axis of the heat pump 100 at the end of the first end 1A, and the side wall of the first groove 211 is located at the flange 12.
  • a sealing groove 11 is defined between the folded edge 12 and the side wall of the first groove 211 on the inner side of the hole.
  • the outer edge of the heat-conducting cover 21 is formed with an outer flange 213 that wraps the fold 12 to ensure that the heat-conducting cover 21 can be tightly buckled on the pump body 1.
  • the axial distance e from the bottom surface s2 of the first groove 211 to the top surface s10 of the thermally conductive cover 21 is greater than the bottom surface s1 of the sealing groove 11
  • the heating outer side surface s6 of the second groove 212 of the heat conducting cover 21 is set such that the maximum outer diameter c of the heating outer side surface s6 is smaller than the inner diameter d of the pump body 1.
  • the heating cavity V is disk-shaped, and the diameter of the heating cavity V exceeds the maximum radial width of the second groove 212 by at least 3 mm; the maximum radial width of the second groove 212 is the second groove 212 is the largest dimension in the direction perpendicular to the axis of the heating chamber V.
  • the pump cover assembly 2 further includes a heat conductor 23 which is arranged between the heating element 22 and the outlet 215. Specifically, the heat conductor 23 is provided between the heating element 22 and the inner flange 214.
  • the thermal conductor 23 has a thermally conductive bottom surface s8 that is thermally connected to the bottom surface s3 of the second groove 212, and the thermal conductor 23 has a thermally conductive outer surface that is thermally connected to the inner peripheral surface of the heating element 22 (ie, the heating inner surface s7). Side s9. With this arrangement, the heat of the heating inner surface s7 of the heating element 22 can also be transferred to the liquid in the heating cavity V through the heat conductor 23 and then through the heat conduction cover 21, and the heat transfer area between the heating element 22 and the liquid is further enlarged.
  • the heating element 22 has three sides of heat that can be transferred to the liquid in the heating chamber V, while the traditional design of the heating element 22 only has two sides of heat that can be transferred to the liquid in the heating chamber V.
  • the bottom surface s3 of the second groove 212 of the heat conduction cover 21 is designed to be flat, and the radial length of the bottom surface of the heat conduction cover 21 is at least It is 1.5 times the radial length of the heating bottom surface s5 of the heating element 22, or the radial width of the bottom surface s3 of the second groove 212 is at least 1.5 times the radial width of the heating bottom surface s5 to ensure the heat conduction of the heat conductor 23
  • the bottom surface s8 has a sufficient radial length to ensure that the heat received from the heating element 22 by the heat conductor 23 can be quickly transferred to the heat conducting cover 21 and then to the heated liquid.
  • the heating efficiency of the heat pump 100 with the above-mentioned characteristics is significantly improved compared with the conventional technology, and the surface temperature of the heating element 22 and the surface temperature of the joint between the heat conducting cover 21 and the pump body 1 are significantly reduced.
  • the heat conductor 23 is a metal heat conductor, so that the heat conductor 23 has strong impact resistance, does not become brittle after long-term use, and has a long service life.
  • the thermal conductor 23 may also be thermally conductive ceramics.
  • the heat conductor 23 is an aluminum part or an aluminum alloy part, so that the heat conductor 23 has a high thermal conductivity and a low cost.
  • the heat conductor 23 is sheet-shaped, and the heat conductor 23 is formed by stamping and forming aluminum or aluminum alloy plates, and the processing cost of the heat conductor 23 is low.
  • the heat conductor 23 is a heat sink, and the thickness of the heat sink is not less than 1 mm. This ensures that the heat conductor 23 has sufficient strength, and the thickness of the heat conductor 23 can reduce heat loss on the air side.
  • the heat conductor 23 has a circular ring shape, and the cross-sectional shape of the heat conductor 23 across the axis is L-shaped.
  • the household appliance according to the present application includes the heat pump 100 according to the above-mentioned embodiment of the present application.
  • the household appliance can be a washing appliance, such as a dishwasher or a washing machine, etc.
  • the household appliance provided with the heat pump 100 can also be other appliances, and it is not limited here.
  • the heating efficiency can be significantly improved, and the service life can be extended.
  • the description with reference to the terms “embodiment”, “example”, etc. means that the specific feature, structure, material or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application .
  • the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cookers (AREA)

Abstract

A heat pump (100) and a household appliance having the same. The heat pump (100) comprises a pump body (1) and a pump cover assembly (2). A heating accommodation cavity (V) is defined within the pump body (1). The pump cover assembly (2) comprises a thermally conductive cover (21) and a heating element (22). The thermally conductive cover (21) is fitted to a first end (1A) of the pump body (1). A portion of the thermally conductive cover (21) is recessed toward a second end (1B) of the pump body (1) to form a first recess (211). A portion of a bottom wall of the first recess (211) is recessed toward the second end (1B) of the pump body (1) to form a second recess (212). A side wall of the second recess (212) is spaced apart from a peripheral wall of the pump body (1). The heating element (22) is disposed within the second recess (212). The heating element (22) has a heating lower surface (s5) connected to a lower surface (s3) of the second recess (212) in a conforming and thermally conductive manner. The heating element (22) has a heating outer side surface (s6) connected to a peripheral surface (s4) of the second recess (212) in a conforming and thermally conductive manner.

Description

加热泵及具有其的家用电器Heat pump and household appliances having the same
相关申请的交叉引用Cross references to related applications
本申请要求“佛山市威灵洗涤电机制造有限公司”于2019年07月29日提交的、名称为“加热泵及具有其的家用电器”的、中国专利申请号“201910688680.3”的优先权。This application claims the priority of the Chinese Patent Application No. "201910688680.3" filed by "Foshan Welling Washing Motor Manufacturing Co., Ltd." on July 29, 2019, entitled "Heat Pump and Household Appliances with the same".
技术领域Technical field
本申请涉及一种家用电器，特别是涉及一种加热泵及具有其的家用电器。This application relates to a household appliance, in particular to a heat pump and a household appliance having the same.
背景技术Background technique
传统的集成有加热元件的洗碗机泵中，泵盖上设有凹槽，凹槽内设在加热元件，加热元件的内侧边与凹槽的内侧边贴合导热，加热元件的下底边与凹槽的底边贴合导热。这种结构形式，由于内侧边的直径较小、传热面积不大、热阻大，会导致功率损失大，加热效率低。有的洗碗机泵中，由于内侧边导热能力有限，甚至会取消内侧边导热。In the traditional dishwasher pump with integrated heating element, the pump cover is provided with a groove, and the heating element is arranged in the groove. The inner side of the heating element is attached to the inner side of the groove to conduct heat. The bottom edge is attached to the bottom edge of the groove for heat conduction. This structure, due to the small diameter of the inner side, small heat transfer area, and large thermal resistance, will cause large power loss and low heating efficiency. In some dishwasher pumps, due to the limited thermal conductivity of the inner side, the inner side heat conduction is even cancelled.
传统技术中为改善内侧边加热效率偏低的问题，在有限的泵体外径下，往往选择加大加热元件下底边的径向长度来增大整体贴合面积，即泵体外径受限的条件下，增大加热元件外侧边的直径。但这样的话，一方面外侧边能够增大的面积有限，另一方面，加热元件过于接近泵体。泵体往往选用非金属材料(如PP等)制造，加热元件工作时的热量经由泵盖传递给泵体，加热元件外侧边的直径加大之后，加热元件的热量更快地传递到泵体上，导致泵体的温度上升。测试发现，传统技术下的泵体温度往往接近甚至超过其使用的上限，带来家用电器使用寿命的缩短。In traditional technology, in order to improve the low heating efficiency of the inner side, under the limited outer diameter of the pump body, the radial length of the lower bottom side of the heating element is often chosen to increase the overall bonding area, that is, the outer diameter of the pump body is limited. Under the conditions, increase the diameter of the outer side of the heating element. But in this case, on the one hand, the area that can be enlarged on the outer side is limited, on the other hand, the heating element is too close to the pump body. The pump body is often made of non-metallic materials (such as PP, etc.). The heat of the heating element is transferred to the pump body through the pump cover. After the outer diameter of the heating element is enlarged, the heat of the heating element is transferred to the pump body faster , Causing the temperature of the pump body to rise. The test found that the temperature of the pump body under the traditional technology is often close to or even exceed the upper limit of its use, which shortens the service life of household appliances.
申请内容Application content
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请旨在提出一种加热泵，以增加加热接触面积的同时，减少加热元件向泵体传热。This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application aims to propose a heat pump to increase the heating contact area while reducing the heat transfer from the heating element to the pump body.
本申请还旨在提出一种具有上述加热泵的家用电器。This application also aims to propose a household appliance with the above-mentioned heat pump.
根据本申请实施例的加热泵，包括：泵体，所述泵体内限定出加热容腔，所述泵体具有第一端和第二端，所述泵体在第一端敞开；泵盖组件，所述泵盖组件包括：导热盖，所述导热盖配合在所述泵体的第一端，所述导热盖的一部分朝向所述泵体的第二端凹入以形成第一凹槽，所述第一凹槽的部分底壁朝向所述泵体的第二端凹入以形成第二凹槽，所述第二凹槽的侧壁与所述泵体的周壁间隔开；加热元件，所述加热元件设在所述第二凹槽内，所述加热元件具有与所述第二凹槽的底面贴合导热地连接的加热底面，所述加热元件具有与所述第二凹槽的周面贴合导热地连接的加热外侧面。The heat pump according to the embodiment of the present application includes: a pump body defining a heating cavity, the pump body having a first end and a second end, the pump body being open at the first end; a pump cover assembly , The pump cover assembly includes: a thermally conductive cover fitted to the first end of the pump body, a part of the thermally conductive cover is recessed toward the second end of the pump body to form a first groove, A part of the bottom wall of the first groove is recessed toward the second end of the pump body to form a second groove, and the side wall of the second groove is spaced apart from the peripheral wall of the pump body; a heating element, The heating element is arranged in the second groove, the heating element has a heating bottom surface that is thermally connected to the bottom surface of the second groove, and the heating element has a connection with the second groove. The peripheral surface is attached to the heat-conductingly connected heating outer surface.
根据本申请实施例的加热泵，在导热盖上设置第一凹槽，在第一凹槽的底壁上再设置第二凹槽，导热盖自身刚度及对泵体的约束能力变强；且由于加热元件更加深入加热容腔的内部，整个加热容腔内液体吸收导热盖上热量的速度更快。通过加热元件的加热底面与第二凹槽的底面相贴合，还将加热元件的加热外侧面与第二凹槽的周面相贴合，加热元件与导热盖之间的贴合导热面积可以大大增加，可以降低热阻、提高传热效率，降低功率损失。利用第一凹槽和第二凹槽的形状，使第二凹槽的侧壁与泵体间隔开，且第二凹槽在外侧充满可流动的液体，泵体被加热过高的可能性大大降低，可延长加热泵的使用寿命。According to the heat pump of the embodiment of the present application, a first groove is provided on the heat-conducting cover, and a second groove is further provided on the bottom wall of the first groove, so that the rigidity of the heat-conducting cover and its restraining ability on the pump body become stronger; As the heating element goes deeper into the heating chamber, the liquid in the entire heating chamber absorbs heat from the heat conducting cover faster. By bonding the heating bottom surface of the heating element to the bottom surface of the second groove, and also bonding the heating outer side surface of the heating element to the peripheral surface of the second groove, the heat conduction area between the heating element and the heat conducting cover can be greatly increased. Increase can reduce thermal resistance, improve heat transfer efficiency, and reduce power loss. Using the shape of the first groove and the second groove to separate the side wall of the second groove from the pump body, and the second groove is filled with flowable liquid on the outside, the pump body is highly likely to be overheated Lowering can extend the service life of the heat pump.
在一些实施例中，所述加热外侧面形成为从所述泵体的第二端到第一端的方向上直径逐渐增大的圆台面，所述圆台面整体与所述第二凹槽的周面贴合导热地连接。In some embodiments, the heating outer side surface is formed as a circular mesa with a diameter gradually increasing from the second end to the first end of the pump body, and the circular mesa is integral with the second groove. The circumferential surface is connected in a thermally conductive manner.
在一些实施例中，所述第二凹槽的周面与所述第二凹槽的底面之间的夹角大于90度，且从所述泵体的第二端到第一端的方向上所述第二凹槽的周面的周长逐渐增加。In some embodiments, the angle between the circumferential surface of the second groove and the bottom surface of the second groove is greater than 90 degrees, and is in the direction from the second end of the pump body to the first end The circumference of the peripheral surface of the second groove gradually increases.
在一些实施例中，所述第二凹槽的底壁上设有出口，所述加热元件为绕所述出口设置的环形。In some embodiments, an outlet is provided on the bottom wall of the second groove, and the heating element has a ring shape arranged around the outlet.
在一些实施例中，所述加热元件的内周面为加热内侧面，所述加热外侧面与所述加热底面之间的夹角大于所述加热内侧面与所述加热底面之间的夹角。In some embodiments, the inner peripheral surface of the heating element is a heating inner surface, and the included angle between the heating outer surface and the heating bottom surface is greater than the included angle between the heating inner surface and the heating bottom surface .
在一些实施例中，所述加热元件的内周面为加热内侧面，在过所述加热泵轴线的截面上，所述加热内侧面上任一点的切线与所述加热底面之间夹角大于等于90度。In some embodiments, the inner peripheral surface of the heating element is a heating inner surface. On a cross section passing through the axis of the heat pump, the angle between a tangent to any point on the heating inner surface and the heating bottom surface is greater than or equal to 90 degrees.
在一些实施例中，所述第二凹槽为与所述出口同心设置的圆环形，所述第二凹槽的底面的径向宽度至少为所述加热底面的径向宽度的1.5倍，所述第二凹槽的底面的径向宽度为所述第二凹槽的底面的外径与内径的差值，所述加热底面的径向宽度为所述加热底面的外径与内径的差值。In some embodiments, the second groove has an annular shape arranged concentrically with the outlet, and the radial width of the bottom surface of the second groove is at least 1.5 times the radial width of the heating bottom surface, The radial width of the bottom surface of the second groove is the difference between the outer diameter and the inner diameter of the bottom surface of the second groove, and the radial width of the heating bottom surface is the difference between the outer diameter and the inner diameter of the heating bottom surface value.
在一些实施例中，所述泵体在第一端的端面上设有密封槽，所述泵盖组件包括设在所述密封槽内的密封圈，且所述第一凹槽的深度大于所述密封槽的深度。In some embodiments, the pump body is provided with a sealing groove on the end surface of the first end, the pump cover assembly includes a sealing ring arranged in the sealing groove, and the depth of the first groove is greater than that of the first groove. The depth of the sealing groove.
在一些实施例中，所述加热容腔为圆盘形，所述加热容腔的直径至少超过所述第二凹槽的最大径向宽度3mm；所述第二凹槽的最大径向宽度为所述第二凹槽在垂直于所述加热容腔的轴线方向上的最大尺寸。In some embodiments, the heating cavity is in the shape of a disc, and the diameter of the heating cavity is at least 3 mm larger than the maximum radial width of the second groove; the maximum radial width of the second groove is The largest dimension of the second groove in a direction perpendicular to the axis of the heating cavity.
在一些实施例中，所述泵盖组件还包括：导热体，所述导热体设在所述加热元件和所述出口之间，所述导热体具有与所述第二凹槽的底面贴合导热地连接的导热底面，所述导热体具有与所述加热元件的内周面贴合导热地连接的导热外侧面。In some embodiments, the pump cover assembly further includes: a heat conductor, the heat conductor is provided between the heating element and the outlet, the heat conductor has a bottom surface of the second groove A thermally conductive bottom surface that is thermally connected, and the thermal conductor has a thermally conductive outer surface that is thermally connected to the inner peripheral surface of the heating element in a fit and thermally conductive manner.
根据本申请的家用电器，包括根据本申请上述实施例所述的加热泵。The household appliance according to the present application includes the heat pump according to the above-mentioned embodiment of the present application.
根据本申请的家用电器，通过设置上述加热泵，加热效率可以得到明显提升，使用 寿命也能延长。According to the household appliance of the present application, by providing the above-mentioned heating pump, the heating efficiency can be significantly improved, and the service life can be extended.
本申请的附加方面和优点将在下面的描述中变得明显，或通过本申请的实践了解到。The additional aspects and advantages of the present application will become apparent in the following description, or be understood through the practice of the present application.
附图说明Description of the drawings
图1是一个实施例中加热泵的结构示意图。Fig. 1 is a schematic diagram of the structure of a heat pump in an embodiment.
图2是一个实施例中加热元件的结构示意图。Fig. 2 is a schematic diagram of the structure of the heating element in an embodiment.
图3是一个实施例中导热盖的结构示意图。Fig. 3 is a schematic diagram of the structure of the heat conducting cover in an embodiment.
图4是一个实施例中泵体的结构示意图。Figure 4 is a schematic diagram of the pump body in an embodiment.
图5是一个实施例中导热体的结构示意图。Fig. 5 is a schematic view of the structure of a heat conductor in an embodiment.
具体实施方式Detailed ways
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as a limitation to the present application.
在本申请的描述中，需要理解的是，术语“长度”、“宽度”、“厚度”、“内”、“外”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。In the description of this application, it should be understood that the terms "length", "width", "thickness", "inner", "outer", "axial", "radial", "circumferential", etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and Operation, therefore cannot be understood as a limitation of this application. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise specified, "plurality" means two or more.
下面参考附图描述根据本申请实施例的加热泵100。The heat pump 100 according to an embodiment of the present application will be described below with reference to the drawings.
根据本申请实施例的加热泵100，如图1所示，包括：泵体1和泵盖组件2。泵体1内限定出加热容腔V，泵体1具有第一端1A和第二端1B，泵体1在第一端1A敞开，泵盖组件2配合在泵体1的第一端1A。The heat pump 100 according to the embodiment of the present application, as shown in FIG. 1, includes: a pump body 1 and a pump cover assembly 2. The pump body 1 defines a heating chamber V. The pump body 1 has a first end 1A and a second end 1B. The pump body 1 is open at the first end 1A, and the pump cover assembly 2 is fitted to the first end 1A of the pump body 1.
如图1-图3所示，泵盖组件2包括：导热盖21和加热元件22，导热盖21配合在泵体1的第一端1A，导热盖21的一部分朝向泵体1的第二端1B凹入以形成第一凹槽211，第一凹槽211的部分底壁朝向泵体1的第二端1B凹入以形成第二凹槽212，第二凹槽212的侧壁与泵体1的周壁间隔开。加热元件22设在第二凹槽212内，加热元件22具有与第二凹槽212的底面s3贴合导热地连接的加热底面s5，加热元件22具有与第二凹槽212的周面s4贴合导热地连接的加热外侧面s6。As shown in Figures 1 to 3, the pump cover assembly 2 includes a thermally conductive cover 21 and a heating element 22. The thermally conductive cover 21 is fitted to the first end 1A of the pump body 1, and a part of the thermally conductive cover 21 faces the second end of the pump body 1. 1B is recessed to form a first groove 211, and a part of the bottom wall of the first groove 211 is recessed toward the second end 1B of the pump body 1 to form a second groove 212. The side walls of the second groove 212 and the pump body The peripheral walls of 1 are spaced apart. The heating element 22 is arranged in the second groove 212, the heating element 22 has a heating bottom surface s5 that is thermally connected to the bottom surface s3 of the second groove 212, and the heating element 22 has a peripheral surface s4 attached to the second groove 212. Join the heat-conductingly connected heating outer side s6.
可以理解的是，加热泵100具有一液体回路，加热容腔V是液体回路的一部分。在 泵盖组件2上，导热盖21用于封盖加热容腔V的一端，导热盖21面向加热容腔V的一面流动着液体，加热元件22通电后所发出的大部分热量，经由加热元件22与导热盖21的贴合面传递给导热盖21，再由导热盖21将接受自加热元件22的热量传递给加热容腔V内流动的液体。如此设计，一方面实现给液体加热的功能，另一方面，也实现了水电分离。所谓水电分离，是指加热元件22与被加热的液体被导热盖21所分隔开，因而使用上更加安全，能够减少因被加热的液体直接接触加热元件22所导致的事故。例如一旦出现某种异常如加热元件22的管壁开裂等原因，如果水电不分离，被加热的液体可能进入加热元件22内部，导致家用电器漏电等异常事故。It can be understood that the heating pump 100 has a liquid circuit, and the heating chamber V is a part of the liquid circuit. On the pump cover assembly 2, the heat-conducting cover 21 is used to cover one end of the heating chamber V, and the side of the heat-conducting cover 21 facing the heating chamber V is filled with liquid. Most of the heat emitted by the heating element 22 after being energized passes through the heating element The bonding surface between 22 and the heat conducting cover 21 is transferred to the heat conducting cover 21, and the heat received from the heating element 22 is transferred to the liquid flowing in the heating cavity V by the heat conducting cover 21. This design realizes the function of heating the liquid on the one hand, and on the other hand, it also realizes the separation of water and electricity. The so-called hydroelectric separation means that the heating element 22 and the heated liquid are separated by the heat conducting cover 21, which is safer to use and can reduce accidents caused by the heated liquid directly contacting the heating element 22. For example, once a certain abnormality occurs, such as cracking of the pipe wall of the heating element 22, if the water and electricity are not separated, the heated liquid may enter the heating element 22, causing abnormal accidents such as electric leakage of household appliances.
其中，在导热盖21上设置第一凹槽211，在第一凹槽211的底壁上再设置第二凹槽212，第一凹槽211和第二凹槽212都是朝向泵体1的第二端1B凹入的。这样设置，导热盖21的边缘处至少形成两级台阶，导热盖21的刚度得到提升，抗冲击、抗变形能力加强。导热盖21的刚度变强后，由于导热盖21盖合在泵体1上并与泵体1相接触，变强的导热盖21对泵体1的约束力变强，减少泵体1因受热而变形的程度。另外，将第一凹槽211、第二凹槽212都朝向加热容腔V的内部凹入，加热元件22相比现有的方案更加深入加热容腔V的内部，从而整个加热容腔V内液体吸收导热盖21上热量的速度更快。Wherein, a first groove 211 is provided on the heat conducting cover 21, and a second groove 212 is provided on the bottom wall of the first groove 211. The first groove 211 and the second groove 212 are both facing the pump body 1. The second end 1B is recessed. With this arrangement, at least two steps are formed at the edge of the heat-conducting cover 21, the rigidity of the heat-conducting cover 21 is improved, and the impact resistance and deformation resistance are enhanced. After the rigidity of the heat-conducting cover 21 becomes stronger, since the heat-conducting cover 21 is covered on the pump body 1 and is in contact with the pump body 1, the stronger heat-conducting cover 21 has a stronger binding force on the pump body 1, reducing the heat exposure of the pump body 1 And the degree of deformation. In addition, the first groove 211 and the second groove 212 are both recessed toward the inside of the heating cavity V, and the heating element 22 is deeper into the heating cavity V than in the existing solution, so that the entire heating cavity V is The liquid absorbs the heat on the heat conducting cover 21 faster.
相对于现有技术中采用加热元件的下底边与凹槽的底边贴合的方案，以及现有技术中采用加热元件的下底边、内侧边均与凹槽内壁相贴合的方案而言，在本申请实施例中，不仅将加热元件22的加热底面s5与第二凹槽212的底面s3相贴合，还将加热元件22的加热外侧面s6与第二凹槽212的周面s4相贴合，加热元件22与导热盖21之间的贴合导热面积可以大大增加，而且在同样尺寸的泵体1中，利用加热外侧面s6贴合的方案贴合导热面积的增加幅度非常大。Compared with the prior art solution that uses the lower bottom edge of the heating element to be attached to the bottom edge of the groove, and the prior art solution that uses the lower bottom edge and the inner side of the heating element to adhere to the inner wall of the groove In other words, in the embodiment of the present application, not only the heating bottom surface s5 of the heating element 22 is attached to the bottom surface s3 of the second groove 212, but also the heating outer surface s6 of the heating element 22 is attached to the circumference of the second groove 212. If the surface s4 is attached, the heat conduction area between the heating element 22 and the heat conduction cover 21 can be greatly increased, and in the pump body 1 of the same size, the heat conduction area is increased by using the heating outer surface s6 bonding solution very large.
可以理解的是，加热元件22的加热外侧面s6如果不与第二凹槽212的周面s4相贴合，加热元件22的加热外侧面s6传出的热量基本上由空气吸收，传导至空气的热量基本也就成为无用功率而损失。要降低功率损失，可尽量增大加热元件22与导热盖21贴合的面积。传统方案中提到选择增设加热元件的内侧边作为贴合面，但是内侧边的直径小，传热面积也小，导致热阻大、传热效率低。本申请实施例中，选择加热元件22的加热外侧面s6作为贴合面，贴合面积增加幅度大，可以降低热阻、提高传热效率，降低功率损失。It can be understood that if the heating outer surface s6 of the heating element 22 does not adhere to the peripheral surface s4 of the second groove 212, the heat transferred from the heating outer surface s6 of the heating element 22 is basically absorbed by the air and conducted to the air. The heat is basically lost as useless power. To reduce the power loss, the area where the heating element 22 and the heat conducting cover 21 are attached can be maximized. In the traditional solution, the inner side of the additional heating element is selected as the bonding surface, but the diameter of the inner side is small, and the heat transfer area is also small, resulting in large thermal resistance and low heat transfer efficiency. In the embodiment of the present application, the heating outer surface s6 of the heating element 22 is selected as the bonding surface, and the bonding area is increased greatly, which can reduce the thermal resistance, improve the heat transfer efficiency, and reduce the power loss.
为缓解泵体1与导热盖21相连处温度过高问题，本申请实施例中提出，第一凹槽211的部分底壁形成第二凹槽212，第二凹槽212的侧壁与泵体1的周壁间隔开，加热元件22设在第二凹槽212内。以图1为例，上述设置方式不仅使第二凹槽212的侧壁 与泵体1的第一端1A拉开了距离，而且第二凹槽212的侧壁与泵体1的周壁在径向上也拉开了距离。另外，这样设置，第二凹槽212在径向外侧充满液体，加热元件22的加热外侧面s6传导至第二凹槽212的周面s4的热量大部分可被液体吸收。由于液体具有流动性，液体被加热后温度不致过高。综上因素，泵体1被加热过高的可能性会大大降低，由此可延长泵体1的使用寿命。In order to alleviate the problem of excessively high temperature at the connection between the pump body 1 and the heat conducting cover 21, it is proposed in the embodiment of the present application that a part of the bottom wall of the first groove 211 forms a second groove 212, and the side wall of the second groove 212 is connected to the pump body. The peripheral walls of 1 are spaced apart, and the heating element 22 is arranged in the second groove 212. Taking FIG. 1 as an example, the above arrangement not only causes the side wall of the second groove 212 to be separated from the first end 1A of the pump body 1, but also the side wall of the second groove 212 is in diameter with the peripheral wall of the pump body 1. It also opened a distance upwards. In addition, with this arrangement, the second groove 212 is filled with liquid on the radially outer side, and most of the heat conducted from the heating outer surface s6 of the heating element 22 to the peripheral surface s4 of the second groove 212 can be absorbed by the liquid. Because the liquid has fluidity, the temperature of the liquid will not be too high after being heated. In summary, the possibility of the pump body 1 being overheated will be greatly reduced, thereby prolonging the service life of the pump body 1.
根据本申请实施例的加热泵100，在导热盖21上设置第一凹槽211，在第一凹槽211的底壁上再设置第二凹槽212，导热盖21自身刚度及对泵体1的约束能力变强；且由于加热元件更加深入加热容腔V的内部，整个加热容腔V内液体吸收导热盖21上热量的速度更快。通过加热元件22的加热底面s5与第二凹槽212的底面s3相贴合，还将加热元件22的加热外侧面s6与第二凹槽212的周面s4相贴合，加热元件22与导热盖21之间的贴合导热面积可以大大增加，可以降低热阻、提高传热效率，降低功率损失。利用第一凹槽211和第二凹槽212的形状，使第二凹槽212的侧壁与泵体1间隔开，且第二凹槽212在外侧充满可流动的液体，泵体1被加热过高的可能性大大降低，可延长加热泵100的使用寿命。According to the heat pump 100 of the embodiment of the present application, a first groove 211 is provided on the heat conducting cover 21, and a second groove 212 is further provided on the bottom wall of the first groove 211. The confinement ability of the heating element becomes stronger; and because the heating element goes deeper into the heating cavity V, the liquid in the entire heating cavity V absorbs the heat on the heat conducting cover 21 faster. The heating bottom surface s5 of the heating element 22 is attached to the bottom surface s3 of the second groove 212, and the heating outer side surface s6 of the heating element 22 is attached to the peripheral surface s4 of the second groove 212, and the heating element 22 is connected to the heat conduction The heat conduction area for bonding between the covers 21 can be greatly increased, which can reduce thermal resistance, improve heat transfer efficiency, and reduce power loss. Using the shape of the first groove 211 and the second groove 212, the side wall of the second groove 212 is spaced from the pump body 1, and the second groove 212 is filled with flowable liquid on the outside, and the pump body 1 is heated The possibility of excessively high is greatly reduced, and the service life of the heat pump 100 can be prolonged.
可选地，导热盖21为金属盖，这样导热盖21导热性能好、且导热性能稳定，使用寿命长，配合在泵体1端部的连接可靠性高。Optionally, the thermally conductive cover 21 is a metal cover, so that the thermally conductive cover 21 has good thermal conductivity, stable thermal conductivity, long service life, and high connection reliability at the end of the pump body 1.
可选地，加热元件22的全部朝向第二凹槽212的周面s4的表面都与第二凹槽212的周面s4相贴合，也可以加热元件22的部分朝向第二凹槽212的周面s4的表面与第二凹槽212的周面s4相贴合。有的示例中，加热元件22的朝向第二凹槽212的周面s4的表面上还设有凹凸结构，第二凹槽212的周面s4也形成与上述凹凸结构相贴合的形状，从而可进一步增加接触面积。Optionally, all the surfaces of the heating element 22 facing the peripheral surface s4 of the second groove 212 are attached to the peripheral surface s4 of the second groove 212, or the part of the heating element 22 facing the second groove 212 The surface of the peripheral surface s4 is in contact with the peripheral surface s4 of the second groove 212. In some examples, the surface of the heating element 22 facing the circumferential surface s4 of the second groove 212 is also provided with a concave-convex structure, and the circumferential surface s4 of the second groove 212 also forms a shape that fits the aforementioned concave-convex structure, thereby The contact area can be further increased.
在一些实施例中，如图1和图2所示，加热外侧面s6形成为在由泵体1的第二端1B朝向第一端1A的方向上逐渐扩张的表面。这样设置，加热外侧面s6越是接近泵体1的第一端1A，其周长越长，可以进一步增加与导热盖21的贴合接触面积。In some embodiments, as shown in FIGS. 1 and 2, the heating outer side surface s6 is formed as a surface that gradually expands in a direction from the second end 1B of the pump body 1 toward the first end 1A. With this arrangement, the closer the heating outer side surface s6 is to the first end 1A of the pump body 1, the longer its circumference, which can further increase the contact area with the heat conducting cover 21.
具体地，如图2所示，在过加热泵100轴线的截面上，加热外侧面s6上任一点的切线均与加热底面s5所夹的角度a大于90度。如此设计，加热元件22与导热盖21的贴合导热面积较传统技术进一步提升，有的甚至能提升30％以上。对应的，第二凹槽212的周面s4与底面s3之间的夹角也等于a，且角度a大于90度。也就是说，第二凹槽212的周面s4与述第二凹槽212的底面s3之间的夹角大于90度，且从泵体1的第二端1B到第一端1A的方向上，第二凹槽212的周面s4的周长逐渐增加。Specifically, as shown in FIG. 2, on the cross section of the axis of the overheating pump 100, the angle a between the tangent line of any point on the heating outer surface s6 and the heating bottom surface s5 is greater than 90 degrees. With such a design, the bonding heat conduction area of the heating element 22 and the heat conduction cover 21 is further improved compared with the conventional technology, and some can even be increased by more than 30%. Correspondingly, the included angle between the circumferential surface s4 and the bottom surface s3 of the second groove 212 is also equal to a, and the angle a is greater than 90 degrees. That is to say, the angle between the circumferential surface s4 of the second groove 212 and the bottom surface s3 of the second groove 212 is greater than 90 degrees, and is in the direction from the second end 1B of the pump body 1 to the first end 1A , The circumference of the peripheral surface s4 of the second groove 212 gradually increases.
进一地，加热外侧面s6形成为从泵体1的第二端1B到第一端1A的方向上直径逐渐增大的圆台面，圆台面整体与第二凹槽212的周面s4贴合导热地连接。这样不仅加 热外侧面s6与导热盖21的贴合接触面积较大，而且加热元件22的形状也容易制作加工。Further, the heating outer side surface s6 is formed as a circular mesa with a gradually increasing diameter in the direction from the second end 1B to the first end 1A of the pump body 1, and the circular mesa is integrally attached to the peripheral surface s4 of the second groove 212 Connected thermally. In this way, not only the bonding contact area between the heating outer surface s6 and the heat conducting cover 21 is larger, but the shape of the heating element 22 is also easy to manufacture and process.
在一些实施例中，第二凹槽212的底壁上设有出口215，加热元件22为绕出口215设置的环形，液体由泵体1的第二端1B流入，由泵体1的第一端1A流出，这样设置使导热盖21处液体流动性较强，吸热能力强。当然，在其他实施例中也可以将出口215设置在泵体1的第二端1B。In some embodiments, the bottom wall of the second groove 212 is provided with an outlet 215, and the heating element 22 has an annular shape around the outlet 215. The liquid flows in from the second end 1B of the pump body 1 and flows from the first end 1B of the pump body 1. The end 1A flows out. This arrangement makes the liquid at the heat conducting cover 21 have strong fluidity and strong heat absorption capacity. Of course, in other embodiments, the outlet 215 may also be provided at the second end 1B of the pump body 1.
可选地，导热盖21上沿出口215设有一圈内翻边214。Optionally, an inner flange 214 is provided along the outlet 215 of the heat conducting cover 21.
具体地，加热元件22的内周面为加热内侧面s7。可选地，在过加热泵100轴线的截面上，加热内侧面s7上任一点的切线均与加热底面s5所夹的角度b大于等于90度。Specifically, the inner peripheral surface of the heating element 22 is a heating inner surface s7. Optionally, on the cross section of the axis of the overheating pump 100, the angle b between any point on the heating inner surface s7 and the heating bottom surface s5 is greater than or equal to 90 degrees.
可选地，加热元件22的加热内侧面s7为直筒面，或者从泵体1的第二端1B到第一端1A的方向上，加热内侧面s7形成为直径逐渐增大的圆台面。Optionally, the heating inner side surface s7 of the heating element 22 is a straight cylindrical surface, or in the direction from the second end 1B to the first end 1A of the pump body 1, the heating inner side surface s7 is formed as a circular mesa with a gradually increasing diameter.
可选地，加热外侧面s6与加热底面s5之间的夹角a大于加热内侧面s7与加热底面s5之间的夹角b。这种设置，加热外侧面s6倾斜度大，可以保证与导热盖21较大的贴合接触面，同时加热内侧面s7的倾斜度较小，使加热元件22结构更加坚实。如图2所示，加热元件22的加热外侧面s6与加热底面s5的夹角a>加热内侧面s7与加热底面s5的夹角b。Optionally, the included angle a between the heating outer side surface s6 and the heating bottom surface s5 is greater than the included angle b between the heating inner side surface s7 and the heating bottom surface s5. With this arrangement, the heating outer surface s6 has a large inclination, which can ensure a larger contact surface with the heat conducting cover 21, and at the same time, the heating inner surface s7 has a smaller inclination, so that the heating element 22 has a more solid structure. As shown in FIG. 2, the included angle a between the heating outer surface s6 and the heating bottom surface s5 of the heating element 22> the included angle b between the heating inner surface s7 and the heating bottom surface s5.
可选地，加热元件22的加热底面s5的径向长度小于加热元件22相对侧表面径向长度，且a>b≥90°。Optionally, the radial length of the heating bottom surface s5 of the heating element 22 is smaller than the radial length of the opposite side surface of the heating element 22, and a>b≥90°.
可选地，加热元件22在垂直于加热泵100的轴线的截面形状呈四边形，这样不仅加热元件22加工容易，而且在泵盖组件2上组装其他部件也较容易。Optionally, the cross-sectional shape of the heating element 22 perpendicular to the axis of the heat pump 100 is quadrilateral, so that not only the heating element 22 is easy to process, but it is also easier to assemble other parts on the pump cover assembly 2.
进一步可选地，加热元件22在垂直于加热泵100的轴线的截面形状呈直角梯形。Further optionally, the cross-sectional shape of the heating element 22 perpendicular to the axis of the heat pump 100 is a right-angled trapezoid.
具体地，第二凹槽212为与出口215同心设置的圆环形，第二凹槽212的底面s3的径向宽度至少为加热底面s5的径向宽度的1.5倍，第二凹槽212的底面s3的径向宽度为第二凹槽212的底面s3的外径与内径的差值，加热底面s5的径向宽度为加热底面s5的外径与内径的差值。Specifically, the second groove 212 has an annular shape concentrically with the outlet 215, and the radial width of the bottom surface s3 of the second groove 212 is at least 1.5 times the radial width of the heating bottom surface s5. The radial width of the bottom surface s3 is the difference between the outer diameter and the inner diameter of the bottom surface s3 of the second groove 212, and the radial width of the heating bottom surface s5 is the difference between the outer diameter and the inner diameter of the heating bottom surface s5.
在一些实施例中，如图1和图4所示，泵体1在第一端1A的端面上设有密封槽11，泵盖组件2包括设在密封槽11内的密封圈24，且第一凹槽211的深度(即轴向尺寸)大于密封槽11的深度。这样可以提高泵体1对第一凹槽211的侧壁的支撑度，而且也可以提高密封性。In some embodiments, as shown in FIGS. 1 and 4, the pump body 1 is provided with a sealing groove 11 on the end surface of the first end 1A, the pump cover assembly 2 includes a sealing ring 24 arranged in the sealing groove 11, and the first The depth (ie, the axial dimension) of a groove 211 is greater than the depth of the sealing groove 11. In this way, the support of the pump body 1 to the side wall of the first groove 211 can be improved, and the sealing performance can also be improved.
具体地，如图4所示，泵体1的周壁在第一端1A端部设有朝向远离加热泵100的轴线的方向突出的折边12，第一凹槽211的侧壁位于折边12的内侧，折边12与第一凹槽211的侧壁之间限定出密封槽11。Specifically, as shown in FIG. 4, the peripheral wall of the pump body 1 is provided with a flange 12 protruding in a direction away from the axis of the heat pump 100 at the end of the first end 1A, and the side wall of the first groove 211 is located at the flange 12. A sealing groove 11 is defined between the folded edge 12 and the side wall of the first groove 211 on the inner side of the hole.
进一步地，导热盖21的外边缘形成有外包该折边12的外翻边213，从而保证导热盖21能严密地扣合在泵体1上。Further, the outer edge of the heat-conducting cover 21 is formed with an outer flange 213 that wraps the fold 12 to ensure that the heat-conducting cover 21 can be tightly buckled on the pump body 1.
为进一步降低泵体1与导热盖21扣合处的温度，如图1所示，第一凹槽211的底面s2到导热盖21的顶面s10的轴向距离e大于密封槽11的底面s1到导热盖21的顶面s10的轴向距离f。而且，导热盖21的第二凹槽212的加热外侧面s6设置为，加热外侧面s6的最大外径c小于泵体1的内径d。In order to further reduce the temperature at the junction of the pump body 1 and the thermally conductive cover 21, as shown in FIG. 1, the axial distance e from the bottom surface s2 of the first groove 211 to the top surface s10 of the thermally conductive cover 21 is greater than the bottom surface s1 of the sealing groove 11 The axial distance f from the top surface s10 of the thermally conductive cover 21. Moreover, the heating outer side surface s6 of the second groove 212 of the heat conducting cover 21 is set such that the maximum outer diameter c of the heating outer side surface s6 is smaller than the inner diameter d of the pump body 1.
在一些实施例中，加热容腔V为圆盘形，加热容腔V的直径至少超过第二凹槽212的最大径向宽度3mm；第二凹槽212的最大径向宽度为第二凹槽212在垂直于加热容腔V的轴线方向上的最大尺寸。In some embodiments, the heating cavity V is disk-shaped, and the diameter of the heating cavity V exceeds the maximum radial width of the second groove 212 by at least 3 mm; the maximum radial width of the second groove 212 is the second groove 212 is the largest dimension in the direction perpendicular to the axis of the heating chamber V.
为了进一步将加热元件22的热量传递给加热容腔V内的液体，在一些实施例中，泵盖组件2还包括：导热体23，导热体23设在加热元件22和出口215之间。具体地，导热体23设在加热元件22和内翻边214之间。In order to further transfer the heat of the heating element 22 to the liquid in the heating cavity V, in some embodiments, the pump cover assembly 2 further includes a heat conductor 23 which is arranged between the heating element 22 and the outlet 215. Specifically, the heat conductor 23 is provided between the heating element 22 and the inner flange 214.
导热体23具有与第二凹槽212的底面s3贴合导热地连接的导热底面s8，导热体23具有与加热元件22的内周面(即加热内侧面s7)贴合导热地连接的导热外侧面s9。如此设置，加热元件22的加热内侧面s7的热量也能够通过导热体23再通过导热盖21传递给加热容腔V内的液体，加热元件22与液体之间的传热面积被进一步加大，加热元件22有三个面的热量都能传递给加热容腔V内的液体，而传统设计加热元件22仅有两个面的热量能传递给加热容腔V内的液体。The thermal conductor 23 has a thermally conductive bottom surface s8 that is thermally connected to the bottom surface s3 of the second groove 212, and the thermal conductor 23 has a thermally conductive outer surface that is thermally connected to the inner peripheral surface of the heating element 22 (ie, the heating inner surface s7). Side s9. With this arrangement, the heat of the heating inner surface s7 of the heating element 22 can also be transferred to the liquid in the heating cavity V through the heat conductor 23 and then through the heat conduction cover 21, and the heat transfer area between the heating element 22 and the liquid is further enlarged. The heating element 22 has three sides of heat that can be transferred to the liquid in the heating chamber V, while the traditional design of the heating element 22 only has two sides of heat that can be transferred to the liquid in the heating chamber V.
为确保加热元件22、导热体23、导热盖21三者之间的导热效率，导热盖21的第二凹槽212的底面s3被设计成平板状，且导热盖21的底面的径向长度至少为加热元件22的加热底面s5的径向长度的1.5倍，或者说第二凹槽212的底面s3的径向宽度至少为加热底面s5的径向宽度的1.5倍，以确保导热体23的导热底面s8有足够的径向长度，确保导热体23接受自加热元件22的热量能够快速地被传递给导热盖21并进而快速地传递给被加热的液体。In order to ensure the heat conduction efficiency between the heating element 22, the heat conductor 23, and the heat conduction cover 21, the bottom surface s3 of the second groove 212 of the heat conduction cover 21 is designed to be flat, and the radial length of the bottom surface of the heat conduction cover 21 is at least It is 1.5 times the radial length of the heating bottom surface s5 of the heating element 22, or the radial width of the bottom surface s3 of the second groove 212 is at least 1.5 times the radial width of the heating bottom surface s5 to ensure the heat conduction of the heat conductor 23 The bottom surface s8 has a sufficient radial length to ensure that the heat received from the heating element 22 by the heat conductor 23 can be quickly transferred to the heat conducting cover 21 and then to the heated liquid.
经实测设置上述特征的加热泵100，加热效率较传统技术有了明显提升，加热元件22表面温度及导热盖21与泵体1扣合处的表面温度有了明显降低。According to actual measurement, the heating efficiency of the heat pump 100 with the above-mentioned characteristics is significantly improved compared with the conventional technology, and the surface temperature of the heating element 22 and the surface temperature of the joint between the heat conducting cover 21 and the pump body 1 are significantly reduced.
具体地，导热体23为金属导热体，从而导热体23抗冲击能力强，在长期使用后也不会脆化，使用寿命长。当然，在其他实施例中导热体23也可以采用导热陶瓷。Specifically, the heat conductor 23 is a metal heat conductor, so that the heat conductor 23 has strong impact resistance, does not become brittle after long-term use, and has a long service life. Of course, in other embodiments, the thermal conductor 23 may also be thermally conductive ceramics.
可选地，导热体23为铝件或者铝合金件，这样导热体23导热系数高，而且成本较低。Optionally, the heat conductor 23 is an aluminum part or an aluminum alloy part, so that the heat conductor 23 has a high thermal conductivity and a low cost.
进一步可选地，导热体23为片状，且导热体23选用铝或铝合金类板材冲压成形，导热体23加工成本较低。Further optionally, the heat conductor 23 is sheet-shaped, and the heat conductor 23 is formed by stamping and forming aluminum or aluminum alloy plates, and the processing cost of the heat conductor 23 is low.
有利地，导热体23为散热片，散热片的厚度不小于1mm，这样保证导热体23有足够的强度，而且导热体23较厚可以减少热量在空气一侧的散失。Advantageously, the heat conductor 23 is a heat sink, and the thickness of the heat sink is not less than 1 mm. This ensures that the heat conductor 23 has sufficient strength, and the thickness of the heat conductor 23 can reduce heat loss on the air side.
在一个具体示例中，如图5所示，导热体23为圆环形，导热体23的过轴线的截面形状为L形。In a specific example, as shown in FIG. 5, the heat conductor 23 has a circular ring shape, and the cross-sectional shape of the heat conductor 23 across the axis is L-shaped.
根据本申请的家用电器，包括根据本申请上述实施例的加热泵100。家用电器可以为洗涤电器，如洗碗机或者洗衣机等，当然设置了加热泵100的家用电器也可以是其他设备，这里不限。The household appliance according to the present application includes the heat pump 100 according to the above-mentioned embodiment of the present application. The household appliance can be a washing appliance, such as a dishwasher or a washing machine, etc. Of course, the household appliance provided with the heat pump 100 can also be other appliances, and it is not limited here.
根据本申请的家用电器，通过设置上述加热泵100，加热效率可以得到明显提升，使用寿命也能延长。According to the household appliance of the present application, by providing the above-mentioned heating pump 100, the heating efficiency can be significantly improved, and the service life can be extended.
根据本申请实施例的家用电器的其他构成例如控制器、如洗涤电器上的电机等其结构以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。The structure and operation of other components of the household appliance according to the embodiment of the present application, such as a controller, a motor on a washing appliance, etc., are known to those of ordinary skill in the art and will not be described in detail here.
在本说明书的描述中，参考术语“实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific feature, structure, material or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application . In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and modifications can be made to these embodiments without departing from the principle and purpose of the present application. The scope of the application is defined by the claims and their equivalents.

Claims (11)

  1. 一种加热泵，其特征在于，包括：A heat pump, characterized by comprising:
    泵体，所述泵体内限定出加热容腔，所述泵体具有第一端和第二端，所述泵体在第一端敞开；A pump body, the pump body defines a heating cavity, the pump body has a first end and a second end, and the pump body is open at the first end;
    泵盖组件，所述泵盖组件包括：A pump cover assembly, the pump cover assembly includes:
    导热盖，所述导热盖配合在所述泵体的第一端，所述导热盖的一部分朝向所述泵体的第二端凹入以形成第一凹槽，所述第一凹槽的部分底壁朝向所述泵体的第二端凹入以形成第二凹槽，所述第二凹槽的侧壁与所述泵体的周壁间隔开；A heat-conducting cover fitted on the first end of the pump body, a part of the heat-conducting cover is recessed toward the second end of the pump body to form a first groove, and a part of the first groove The bottom wall is recessed toward the second end of the pump body to form a second groove, and the side wall of the second groove is spaced apart from the peripheral wall of the pump body;
    加热元件，所述加热元件设在所述第二凹槽内，所述加热元件具有与所述第二凹槽的底面贴合导热地连接的加热底面，所述加热元件具有与所述第二凹槽的周面贴合导热地连接的加热外侧面。A heating element, the heating element is arranged in the second groove, the heating element has a heating bottom surface that is thermally connected to the bottom surface of the second groove, and the heating element is connected to the second groove The circumferential surface of the groove is attached to the heat-conductingly connected heating outer surface.
  2. 根据权利要求1所述的加热泵，其特征在于，所述加热外侧面形成为从所述泵体的第二端到第一端的方向上直径逐渐增大的圆台面，所述圆台面整体与所述第二凹槽的周面贴合导热地连接。The heat pump according to claim 1, wherein the heating outer side surface is formed as a circular mesa with a diameter gradually increasing from the second end to the first end of the pump body, and the circular mesa is formed as a whole It is connected to the peripheral surface of the second groove in a fit and thermally conductive manner.
  3. 根据权利要求1所述的加热泵，其特征在于，所述第二凹槽的周面与所述第二凹槽的底面之间的夹角大于90度，且从所述泵体的第二端到第一端的方向上所述第二凹槽的周面的周长逐渐增加。The heat pump according to claim 1, wherein the included angle between the circumferential surface of the second groove and the bottom surface of the second groove is greater than 90 degrees, and is separated from the second groove of the pump body. The circumferential length of the peripheral surface of the second groove gradually increases from the end to the first end.
  4. 根据权利要求1所述的加热泵，其特征在于，所述第二凹槽的底壁上设有出口，所述加热元件为绕所述出口设置的环形。The heat pump according to claim 1, wherein an outlet is provided on the bottom wall of the second groove, and the heating element has a ring shape arranged around the outlet.
  5. 根据权利要求4所述的加热泵，其特征在于，所述加热元件的内周面为加热内侧面，所述加热外侧面与所述加热底面之间的夹角大于所述加热内侧面与所述加热底面之间的夹角。The heat pump according to claim 4, wherein the inner peripheral surface of the heating element is a heating inner surface, and the angle between the heating outer surface and the heating bottom surface is larger than the heating inner surface and the heating inner surface. The included angle between the heating bottom surface.
  6. 根据权利要求4所述的加热泵，其特征在于，所述加热元件的内周面为加热内侧面，在过所述加热泵轴线的截面上，所述加热内侧面上任一点的切线与所述加热底面之间夹角大于等于90度。The heat pump according to claim 4, wherein the inner peripheral surface of the heating element is a heating inner surface, and a tangent to any point on the heating inner surface is the same The angle between the heating bottom surfaces is greater than or equal to 90 degrees.
  7. 根据权利要求4所述的加热泵，其特征在于，所述第二凹槽为与所述出口同心设置的圆环形，所述第二凹槽的底面的径向宽度至少为所述加热底面的径向宽度的1.5倍，所述第二凹槽的底面的径向宽度为所述第二凹槽的底面的外径与内径的差值，所述加热底面的径向宽度为所述加热底面的外径与内径的差值。The heat pump according to claim 4, wherein the second groove is a circular ring arranged concentrically with the outlet, and the radial width of the bottom surface of the second groove is at least the same as that of the heating bottom surface. 1.5 times the radial width of the second groove, the radial width of the bottom surface of the second groove is the difference between the outer diameter and the inner diameter of the bottom surface of the second groove, and the radial width of the heating bottom surface is the heating The difference between the outer diameter and the inner diameter of the bottom surface.
  8. 根据权利要求1所述的加热泵，其特征在于，所述泵体在第一端的端面上设有密封槽，所述泵盖组件包括设在所述密封槽内的密封圈，且所述第一凹槽的深度大于所述密封槽的深度。The heat pump according to claim 1, wherein the pump body is provided with a sealing groove on the end surface of the first end, the pump cover assembly includes a sealing ring arranged in the sealing groove, and the The depth of the first groove is greater than the depth of the sealing groove.
  9. 根据权利要求1所述的加热泵，其特征在于，所述加热容腔为圆盘形，所述加热容腔的直径至少超过所述第二凹槽的最大径向宽度3mm；The heat pump according to claim 1, wherein the heating cavity is disc-shaped, and the diameter of the heating cavity is at least 3 mm larger than the maximum radial width of the second groove;
    所述第二凹槽的最大径向宽度为所述第二凹槽在垂直于所述加热容腔的轴线方向上的最大尺寸。The maximum radial width of the second groove is the maximum dimension of the second groove in a direction perpendicular to the axis of the heating cavity.
  10. 根据权利要求4所述的加热泵，其特征在于，所述泵盖组件还包括：导热体，所述导热体设在所述加热元件和所述出口之间，所述导热体具有与所述第二凹槽的底面贴合导热地连接的导热底面，所述导热体具有与所述加热元件的内周面贴合导热地连接的导热外侧面。The heat pump according to claim 4, wherein the pump cover assembly further comprises: a heat conductor, the heat conductor is provided between the heating element and the outlet, and the heat conductor is connected to the The bottom surface of the second groove is attached to a thermally conductive bottom surface, and the heat conductor has a thermally conductive outer surface that is attached and thermally connected to the inner peripheral surface of the heating element.
  11. 一种家用电器，其特征在于，包括根据权利要求1-10中任一项所述的加热泵。A household appliance, characterized by comprising the heat pump according to any one of claims 1-10.
PCT/CN2020/104894 2019-07-29 2020-07-27 Heat pump, and household appliance having same WO2021018094A1 (en)

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