EP3751150B1 - Heating pump and washing appliance - Google Patents
Heating pump and washing appliance Download PDFInfo
- Publication number
- EP3751150B1 EP3751150B1 EP17935583.9A EP17935583A EP3751150B1 EP 3751150 B1 EP3751150 B1 EP 3751150B1 EP 17935583 A EP17935583 A EP 17935583A EP 3751150 B1 EP3751150 B1 EP 3751150B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring body
- heating tube
- annular heating
- pump
- annular
- Prior art date
- Legal status (The legal status 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 status listed.)
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Links
- 238000010438 heat treatment Methods 0.000 title claims description 105
- 238000005406 washing Methods 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
- D06F39/085—Arrangements or adaptations of 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
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
-
- 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
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
Definitions
- the present invention relates to the field of household appliances, in particular to a heating pump and a washing appliance with the same
- the traditional treatment method is generally to provide both a heating device and a fluid device, such that the equipment is complex, bulky, which is inconvenient for family use.
- the heating device and the fluid device are integrated together, but the heating element is mounted in an outer recess formed by protruding toward the fluid side, that is, a protrusion is formed on the inner side of the pump housing. The larger friction area between the protrusion and the fluid creates a significant obstruction to the pumped fluid, resulting in lower pumping efficiency and greater energy consumption.
- Heating pumps are known from CN 203 516 209 U , CN 104 456 917 A , US 2006/236999 A1 , EP1 595 489 A1 , US 2010/119360 A1 and US 2016/334133 A1 .
- An object of the present invention is to overcome the problems in prior arts that the heating and pumping structures are complicated or the pumping efficiency is low, and to provide a heating pump that can simultaneously heat and pump with a simple structure and a high pumping efficiency.
- Another object of the present invention is to provide a washing appliance including the heating pump.
- the heating pump includes a pump housing and a pump cover assembly.
- the pump housing includes an opening or outlet and a side wall extending around the outlet.
- the pump cover assembly includes an annular support portion covering the outlet and a heating element thermal-conductively mounted on the support portion, the support portion separates the heating element from fluid in the heating pump, and a surface of the support portion in contact with the fluid is flat.
- the support portion includes a plate-shaped support ring body extending around a center line of the outlet in a plane perpendicular to the center line, a fixing ring body in connection with an outer periphery of the support ring body and configured for fixing to the top of the side wall; and a bent ring body in connection with an inner periphery of the support ring body and configured for connecting to an external pipe, where the heating element are mounted on the support ring body.
- the heating element includes an annular heating tube with a gap and first and second electrodes respectively disposed at both ends of the gap of the annular heating tube;
- the annular heating tube includes a bottom surface in contact with the support ring body and a side surface connected to the bottom surface and extending in the circumferential direction of the support ring body, and
- the pump cover assembly includes a thermal conductive plate in heat conduction connection with the side surface and the support ring body.
- the thermal conductive plate includes a first ring body and a second ring body connected to the first ring body, where the first ring body and the second ring body are in surface contact with the support ring body and the side surface of the annular heating tube, respectively.
- the first ring body and the second ring body are respectively connected to the support ring body and the side surface of the annular heating tube by welding.
- the pump cover assembly includes a temperature controller connected to the first electrode, the second ring body includes a main ring body having an opening and being in contact with the annular heating tube, and a stepped portion located at the opening, both sides of the stepped portion in the circumferential direction are respectively spaced from both ends of the opening of the main ring body, the stepped portion includes a vertical portion spaced from the annular heating tube and a horizontal portion located above the annular heating tube with a distance between the horizontal portion and the annular heating tube, the temperature controller is mounted on the horizontal portion, and the temperature controller includes a first temperature-sensitive surface being in contact with the stepped portion.
- a distance between the horizontal portion and the annular heating tube e is at least 1 mm; and/or the minimum distance between the temperature controller and the first electrodes has an arc length of 5-15 mm on the annular heating tube.
- the pump cover assembly includes a fuse connected to the second electrode, the fuse includes a second temperature-sensitive surface, the second temperature-sensitive surface is in contact with the annular heating tube; the annular heating tube includes a top surface and two opposite side surfaces connected between the top surface and the bottom surface, the area of the bottom surface is larger than the area of the top surface, and the fuse is supported and mounted on the top surface.
- the pump cover assembly includes an insulation socket, and the temperature controller, the fuse, and the insulation socket are connected in series between the first electrode and the second electrode.
- the pump cover assembly includes a protective cover on the top of the annular heating tube, the temperature controller, the fuse and the insulation socket; and/or, the top of the side wall is provided with a stepped flange protruding outward, the fixing ring body is provided with a grooved flange that can be snap-fixed to an outside of the stepped flange, and the pump cover assembly includes a sealing ring disposed between the stepped flange and the grooved flange to seal the side wall and the support portion.
- the present invention provides a washing appliance.
- the washing appliance includes the above heating pump.
- the heating element is thermal-conductively mounted on the support portion, the support portion separates the heating element from the fluid in the heating pump, the fluid can be heated while being pumped, the structure is simple, the volume is small, and the surface of the support portion in contact with the fluid is flat, such that the friction between the fluid and the support portion is reduced, hindering the movement of the fluid can be avoided, the pumping efficiency is significantly improved and the energy consumption can be reduced, and thus better able to meet user needs.
- the directional terms such as up, down, left and right generally refer to the up, down, left and right as shown in the drawings, and the term “inner” or”outer” refers to the inside or outside of the contour of each component itself, unless otherwise stated.
- the present invention provides a heating pump including a pump housing 1 and a pump cover assembly 2.
- the pump housing 1 includes an opening or outlet and a side wall 11 extending around the outlet.
- the pump cover assembly 2 includes an annular support portion 21 covering the outlet and a heating element 22 thermal-conductively mounted on the support portion 21.
- the support portion 21 is configured to separate the heating element 22 from the fluid in the heating pump, and the surface of the support portion 21 in contact with the fluid is flat.
- the heating element 22 is thermal-conductively mounted on the support portion 21.
- the support portion 21 separates the heating element 22 from the fluid in the heating pump.
- the fluid can be heated while pumping.
- the structure is simple and the volume is small.
- the surface of the support portion 21 in contact with the fluid is flat, which can reduce the friction between the fluid and the support portion, avoid hindering the movement of the fluid, significantly improve the pumping efficiency and reduce the energy consumption, so as to better meet user needs.
- the support portion 21 includes a plate-shaped support ring body 211 extending around a center line of the outlet in a plane perpendicular to the center line, a fixing ring body 212 connected with an outer periphery of the support ring body 211 and configured to be fixed on the top of the side wall 11, and a bent ring body 213 connected with an inner periphery of the support ring body 211 and configured for connecting an external pipe, where the heating element 22 is mounted on the support ring body 211.
- the support portion 21 may be stamped and formed from a stainless steel plate, and the connection portion of the support ring body 211 and the fixing ring body 212 and the bent ring body 213 may be rounded. In this way, more than 90% of the area of the support part in contact with the fluid hasa plane surface, avoiding the obstruction to the fluid and significantly improving the pumping efficiency.
- the heating element 22 includes an annular heating tube 221 with a gap and a first electrode 222 and a second electrode 223 respectively disposed at two ends of the gap in the annular heating tube 221.
- the annular heating tube 221 may include an outer sleeve in which a resistance wire may be mounted, and a thermal-conductive insulating material may be filled between the outer sleeve and the resistance wire.
- the outer sleeve may be an aluminum tube
- the thermal-conductive insulating material may be MgO.
- the annular heating tube 221 includes a bottom surface in thermal contact with the support ring body 211 and a side surface connected to the bottom surface and extending in a circumferential direction of the support ring body 211.
- the pump cover assembly 2 includes a thermal conductive plate 23 that thermal-conductively connects the side surface with the support ring body 211. In this way, the heat radiated from the side of the annular heating tube 221 can be transferred to the support ring body 211 through the thermal conductive plate 23, so that the heating efficiency of the annular heating tube 221 can be significantly improved.
- the thermal conductive plate 23 includes a first ring body 231 and a second ring body 232 connected to the first ring body 231.
- the first ring body 231 and the second ring body 232 are in surface contact with the support ring body 211 and the side surface of the annular heating tube 221, so that the contact area is larger which facilitates a rapid and maximum transmission of the heat dissipated from the side of the annular heating tube 221 to the support ring body 211.
- the first ring body 231 and the second ring body 232 are respectively connected with the support ring body 211 and the side surfaces of the annular heating tube 221 via welding.
- the thermal conductive plate 23 may be stamped and formed from an aluminum plate.
- the pump cover assembly 2 includes a temperature controller 24 connected to the first electrode 222, and to facilitate the installation of the temperature controller 24 while making the structure compact, as shown in FIGS. 3 and 4 , the second ring body 232 includes a main ring body 2321 having an opening and in contact with the annular heating tube, and a stepped portion 2322 located at the opening. Both sides of the stepped portion 2322 in the circumferential direction are respectively spaced apart from both ends of the opening of the main ring body 2321, The stepped portion 2322 includes a vertical portion with an interval relative to the annular heating tube 221 and a horizontal portion located above the annular heating tube 221. The temperature controller 24 is disposed on the horizontal portion.
- the temperature controller 24 includes a first temperature-sensitive surface in contact with the stepped portion. Such that the influence of the annular heating tube 221 and the main ring body 2321 in contact with the annular heating tube 221 on the measurement result of the temperature controller 24 can be minimized.
- a distance between the horizontal portion and the annular heating tube 221 is preferably at least 1 mm, so that the heat transferred to the stepped portion 2322 is mostly from the fluid, and the accuracy of the measurement result of the temperature controller 24 is ensured.
- the minimum distance between the temperature controller 24 and the first electrode 222 has an arc length of 5-15mm on the annular heating tube 221. This location is generally the position with the lowest heat dissipated by the annular heating tube 221, which can further improve the accuracy of the measurement result of the temperature controller 24.
- the pump cover assembly 2 includes a fuse 25 connected to the second electrode 223, and the fuse 25 includes a second temperature-sensitive surface, and the second temperature-sensitive surface is in contact with the annular heating tube 221.
- the annular heating tube 221 includes a top surface and two opposite side surfaces connected between the top surface and the bottom surface, the area of the bottom surface is greater than that of the top surface. The fuse 25 is supported and mounted on the top surface.
- the cross section of the annular heating tube 221 may be trapezoidal or approximately trapezoidal, for example, the aluminum heating tube may be pressed into an approximately trapezoidal shape by high pressure, and the wider bottom surface of the trapezoid is in a thermal-conductive connection with the support ring body 211 by welding. This can increase the heat transfer area on one surface (bottom surface), so that more heat can be transferred to the support ring body 211.
- the pump cover assembly 2 includes an insulation socket 26.
- the temperature controller 24, the fuse 25 and the insulation socket 26 are connected in series between the first electrode 222 and the second electrode 223, such that the overall structure is simple and convenient for assembly.
- the pump cover assembly 2 includes a protective cover 27 disposed on top of the annular heating tube 221, the temperature controller 24, the fuse 25 and the insulation socket 26.
- the structure of the protective cover 27 can be flexibly designed according to the arrangements of the temperature controller 24, the fuse 25 and the insulation socket 26, as shown in FIG. 1 , when the temperature controller 24, the insulation socket 26 and the fuse 25 are sequentially arranged on the side of the annular heating tube 221, the temperature controller 24 may be connected to the first electrode 222 through a short wire L1, and the fuse 25 may be connected to the second electrode 223 through a long wire L2.
- the protective cover 27 may include an inner ring disposed above the first ring body 231 of the thermal conductive plate 23, a sector portion connected to the inner ring, and at least two bent plate bodies, the sector portion is located above the other side of the annular heating tube 221.
- the long wiring L2 may be located above the sector portion.
- the two bent plate bodies may be configured to fix the temperature controller 24 and the fuse 25 respectively, and in order to facilitate installation and fixation, the sector and the edge of the bent plate body can be bent and fixed on an outside of a grooved flange 2121 to be described below.
- the protective cover 27 may be made of metal.
- the top of the side wall 11 is provided with a stepped flange 111 protruding outward
- the fixing ring body 212 is provided with a grooved flange 2121 capable of snapping and fixing to the outside of the stepped flange 111, that is, the outer periphery of the fixing ring body 212 can be stamped with a tongue to be riveted to the pump housing 1, and in order to improve the sealing performance between the pump cover assembly 2 and the pump housing 1, the pump cover assembly 2 includes a sealing ring 28 disposed between the stepped flange 111 and the grooved flange 2121 which seals the side wall 11 and the support portion 21 .
- the present invention provides a washing appliance which includes the heating pump described above.
- the washing appliance may be a dishwasher or the like.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Textile Engineering (AREA)
- Water Supply & Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Resistance Heating (AREA)
Description
- The present invention relates to the field of household appliances, in particular to a heating pump and a washing appliance with the same
- In products development, such as dishwashers and washing machines, it is often required not only to heat fluid but also to pump the heated fluid. The traditional treatment method is generally to provide both a heating device and a fluid device, such that the equipment is complex, bulky, which is inconvenient for family use. In addition, in the existing integrated heating water pump, the heating device and the fluid device are integrated together, but the heating element is mounted in an outer recess formed by protruding toward the fluid side, that is, a protrusion is formed on the inner side of the pump housing. The larger friction area between the protrusion and the fluid creates a significant obstruction to the pumped fluid, resulting in lower pumping efficiency and greater energy consumption.
- Heating pumps are known from
CN 203 516 209 U ,CN 104 456 917 A ,US 2006/236999 A1 ,EP1 595 489 A1 ,US 2010/119360 A1 andUS 2016/334133 A1 . - Therefore, it is desirable to design a heating pump with simple structure and high pumping efficiency, which is capable of heating and pumping simultaneously, and a washing appliance having the heating pump.
- An object of the present invention is to overcome the problems in prior arts that the heating and pumping structures are complicated or the pumping efficiency is low, and to provide a heating pump that can simultaneously heat and pump with a simple structure and a high pumping efficiency.
- Another object of the present invention is to provide a washing appliance including the heating pump.
- In order to achieve the above object, a heating pump according to
claim 1 is provided. The heating pump includes a pump housing and a pump cover assembly. The pump housing includes an opening or outlet and a side wall extending around the outlet. The pump cover assembly includes an annular support portion covering the outlet and a heating element thermal-conductively mounted on the support portion, the support portion separates the heating element from fluid in the heating pump, and a surface of the support portion in contact with the fluid is flat. The support portion includes a plate-shaped support ring body extending around a center line of the outlet in a plane perpendicular to the center line, a fixing ring body in connection with an outer periphery of the support ring body and configured for fixing to the top of the side wall; and a bent ring body in connection with an inner periphery of the support ring body and configured for connecting to an external pipe, where the heating element are mounted on the support ring body. - The heating element includes an annular heating tube with a gap and first and second electrodes respectively disposed at both ends of the gap of the annular heating tube; the annular heating tube includes a bottom surface in contact with the support ring body and a side surface connected to the bottom surface and extending in the circumferential direction of the support ring body, and the pump cover assembly includes a thermal conductive plate in heat conduction connection with the side surface and the support ring body.
- The thermal conductive plate includes a first ring body and a second ring body connected to the first ring body, where the first ring body and the second ring body are in surface contact with the support ring body and the side surface of the annular heating tube, respectively. Preferably, the first ring body and the second ring body are respectively connected to the support ring body and the side surface of the annular heating tube by welding.
- The pump cover assembly includes a temperature controller connected to the first electrode, the second ring body includes a main ring body having an opening and being in contact with the annular heating tube, and a stepped portion located at the opening, both sides of the stepped portion in the circumferential direction are respectively spaced from both ends of the opening of the main ring body, the stepped portion includes a vertical portion spaced from the annular heating tube and a horizontal portion located above the annular heating tube with a distance between the horizontal portion and the annular heating tube, the temperature controller is mounted on the horizontal portion, and the temperature controller includes a first temperature-sensitive surface being in contact with the stepped portion.
- Preferably, a distance between the horizontal portion and the annular heating tube e is at least 1 mm; and/or the minimum distance between the temperature controller and the first electrodes has an arc length of 5-15 mm on the annular heating tube.
- Preferably, the pump cover assembly includes a fuse connected to the second electrode, the fuse includes a second temperature-sensitive surface, the second temperature-sensitive surface is in contact with the annular heating tube; the annular heating tube includes a top surface and two opposite side surfaces connected between the top surface and the bottom surface, the area of the bottom surface is larger than the area of the top surface, and the fuse is supported and mounted on the top surface.
- Preferably, the pump cover assembly includes an insulation socket, and the temperature controller, the fuse, and the insulation socket are connected in series between the first electrode and the second electrode.
- Preferably, the pump cover assembly includes a protective cover on the top of the annular heating tube, the temperature controller, the fuse and the insulation socket; and/or, the top of the side wall is provided with a stepped flange protruding outward, the fixing ring body is provided with a grooved flange that can be snap-fixed to an outside of the stepped flange, and the pump cover assembly includes a sealing ring disposed between the stepped flange and the grooved flange to seal the side wall and the support portion.
- Additionally, the present invention provides a washing appliance. The washing appliance includes the above heating pump.
- In the above technical solutions, the heating element is thermal-conductively mounted on the support portion, the support portion separates the heating element from the fluid in the heating pump, the fluid can be heated while being pumped, the structure is simple, the volume is small, and the surface of the support portion in contact with the fluid is flat, such that the friction between the fluid and the support portion is reduced, hindering the movement of the fluid can be avoided, the pumping efficiency is significantly improved and the energy consumption can be reduced, and thus better able to meet user needs.
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FIG. 1 is a partial structural schematic diagram of a heating pump in accordance with a preferred embodiment of the present invention; -
FIG. 2 is a schematic diagram of a partial cross-sectional structure of a heating pump in accordance with a preferred embodiment of the present invention; -
FIG. 3 is a schematic diagram of another partial structural of a heating pump in accordance with a preferred embodiment of the present invention; -
FIG. 4 is a schematic structural diagram of a thermal conductive plate in accordance with a preferred embodiment of the present invention. - 1 pump housing; 11 side wall; 111 stepped flange; 2 pump cover assembly; 21 support portion; 211 support ring body; 212 fixing ring body; 2121 grooved flange; 213 bent ring body; 22 heating element; 221 ring heating tube; 222 first electrode; 223 second electrode; 23 thermal conductive plate; 231 first ring body; 232 second ring body; 2321 main ring body; 2322 stepped portion; 24 temperature controller; 25 fuse; 26 insulation socket; 27 protective cover; 28 sealing ring; L1 short wiring; L2 long wiring.
- The following will describe specific embodiments of the present invention in detail with the accompanying drawings. It should be understood that the specific embodiments described herein are merely used to illustrate and explain the present invention, and are not intended to limit the present invention which is solely defined by the claims.
- In the present invention, the directional terms such as up, down, left and right generally refer to the up, down, left and right as shown in the drawings, and the term "inner" or"outer" refers to the inside or outside of the contour of each component itself, unless otherwise stated.
- The present invention provides a heating pump including a
pump housing 1 and apump cover assembly 2. Thepump housing 1 includes an opening or outlet and aside wall 11 extending around the outlet. Thepump cover assembly 2 includes anannular support portion 21 covering the outlet and aheating element 22 thermal-conductively mounted on thesupport portion 21. Thesupport portion 21 is configured to separate theheating element 22 from the fluid in the heating pump, and the surface of thesupport portion 21 in contact with the fluid is flat. - In the above technical solution, as shown in
FIGS. 1-4 , theheating element 22 is thermal-conductively mounted on thesupport portion 21. Thesupport portion 21 separates theheating element 22 from the fluid in the heating pump. The fluid can be heated while pumping. The structure is simple and the volume is small. Moreover, the surface of thesupport portion 21 in contact with the fluid is flat, which can reduce the friction between the fluid and the support portion, avoid hindering the movement of the fluid, significantly improve the pumping efficiency and reduce the energy consumption, so as to better meet user needs. - As shown in
FIG. 2 , thesupport portion 21 includes a plate-shapedsupport ring body 211 extending around a center line of the outlet in a plane perpendicular to the center line, a fixing ring body 212 connected with an outer periphery of thesupport ring body 211 and configured to be fixed on the top of theside wall 11, and abent ring body 213 connected with an inner periphery of thesupport ring body 211 and configured for connecting an external pipe, where theheating element 22 is mounted on thesupport ring body 211. To be specific, thesupport portion 21 may be stamped and formed from a stainless steel plate, and the connection portion of thesupport ring body 211 and the fixing ring body 212 and thebent ring body 213 may be rounded. In this way, more than 90% of the area of the support part in contact with the fluid hasa plane surface, avoiding the obstruction to the fluid and significantly improving the pumping efficiency. - In addition, the structural composition and shape of the
heating element 22 can be flexibly selected according to actual work requirements. Theheating element 22 includes anannular heating tube 221 with a gap and afirst electrode 222 and asecond electrode 223 respectively disposed at two ends of the gap in theannular heating tube 221. In addition, theannular heating tube 221 may include an outer sleeve in which a resistance wire may be mounted, and a thermal-conductive insulating material may be filled between the outer sleeve and the resistance wire. Where the outer sleeve may be an aluminum tube, the thermal-conductive insulating material may be MgO. Theannular heating tube 221 includes a bottom surface in thermal contact with thesupport ring body 211 and a side surface connected to the bottom surface and extending in a circumferential direction of thesupport ring body 211. Thepump cover assembly 2 includes a thermalconductive plate 23 that thermal-conductively connects the side surface with thesupport ring body 211. In this way, the heat radiated from the side of theannular heating tube 221 can be transferred to thesupport ring body 211 through the thermalconductive plate 23, so that the heating efficiency of theannular heating tube 221 can be significantly improved. - For convenience in manufacturing, as shown in
FIGS. 2 and4 , the thermalconductive plate 23 includes afirst ring body 231 and asecond ring body 232 connected to thefirst ring body 231. Thefirst ring body 231 and thesecond ring body 232 are in surface contact with thesupport ring body 211 and the side surface of theannular heating tube 221, so that the contact area is larger which facilitates a rapid and maximum transmission of the heat dissipated from the side of theannular heating tube 221 to thesupport ring body 211. In addition, in order to make the structural installation reliable and stable, thefirst ring body 231 and thesecond ring body 232 are respectively connected with thesupport ring body 211 and the side surfaces of theannular heating tube 221 via welding. The thermalconductive plate 23 may be stamped and formed from an aluminum plate. - For convenience in temperature measurement of the fluid, the
pump cover assembly 2 includes atemperature controller 24 connected to thefirst electrode 222, and to facilitate the installation of thetemperature controller 24 while making the structure compact, as shown inFIGS. 3 and 4 , thesecond ring body 232 includes amain ring body 2321 having an opening and in contact with the annular heating tube, and a steppedportion 2322 located at the opening. Both sides of the steppedportion 2322 in the circumferential direction are respectively spaced apart from both ends of the opening of themain ring body 2321, The steppedportion 2322 includes a vertical portion with an interval relative to theannular heating tube 221 and a horizontal portion located above theannular heating tube 221. Thetemperature controller 24 is disposed on the horizontal portion. Thetemperature controller 24 includes a first temperature-sensitive surface in contact with the stepped portion. Such that the influence of theannular heating tube 221 and themain ring body 2321 in contact with theannular heating tube 221 on the measurement result of thetemperature controller 24 can be minimized. - Moreover, a distance between the horizontal portion and the
annular heating tube 221 is preferably at least 1 mm, so that the heat transferred to the steppedportion 2322 is mostly from the fluid, and the accuracy of the measurement result of thetemperature controller 24 is ensured. Further, in order to reduce the influence of the heat dissipated by theannular heating tube 221 and thefirst electrode 222 on thetemperature controller 24, the minimum distance between thetemperature controller 24 and thefirst electrode 222 has an arc length of 5-15mm on theannular heating tube 221. This location is generally the position with the lowest heat dissipated by theannular heating tube 221, which can further improve the accuracy of the measurement result of thetemperature controller 24. - In order to improve the safety performance of the device, preferably, the
pump cover assembly 2 includes afuse 25 connected to thesecond electrode 223, and thefuse 25 includes a second temperature-sensitive surface, and the second temperature-sensitive surface is in contact with theannular heating tube 221. Moreover, to facilitate the installation of thefuse 25, theannular heating tube 221 includes a top surface and two opposite side surfaces connected between the top surface and the bottom surface, the area of the bottom surface is greater than that of the top surface. Thefuse 25 is supported and mounted on the top surface. That is to say, the cross section of theannular heating tube 221 may be trapezoidal or approximately trapezoidal, for example, the aluminum heating tube may be pressed into an approximately trapezoidal shape by high pressure, and the wider bottom surface of the trapezoid is in a thermal-conductive connection with thesupport ring body 211 by welding. This can increase the heat transfer area on one surface (bottom surface), so that more heat can be transferred to thesupport ring body 211. - Among them, for convenience in use (connecting to a power source), preferably, the
pump cover assembly 2 includes aninsulation socket 26. Thetemperature controller 24, thefuse 25 and theinsulation socket 26 are connected in series between thefirst electrode 222 and thesecond electrode 223, such that the overall structure is simple and convenient for assembly. - In order to further improve the safety performance of the device, preferably, the
pump cover assembly 2 includes aprotective cover 27 disposed on top of theannular heating tube 221, thetemperature controller 24, thefuse 25 and theinsulation socket 26. The structure of theprotective cover 27 can be flexibly designed according to the arrangements of thetemperature controller 24, thefuse 25 and theinsulation socket 26, as shown inFIG. 1 , when thetemperature controller 24, theinsulation socket 26 and thefuse 25 are sequentially arranged on the side of theannular heating tube 221, thetemperature controller 24 may be connected to thefirst electrode 222 through a short wire L1, and thefuse 25 may be connected to thesecond electrode 223 through a long wire L2. At this time, theprotective cover 27 may include an inner ring disposed above thefirst ring body 231 of the thermalconductive plate 23, a sector portion connected to the inner ring, and at least two bent plate bodies, the sector portion is located above the other side of theannular heating tube 221. The long wiring L2 may be located above the sector portion. The two bent plate bodies may be configured to fix thetemperature controller 24 and thefuse 25 respectively, and in order to facilitate installation and fixation, the sector and the edge of the bent plate body can be bent and fixed on an outside of agrooved flange 2121 to be described below. Theprotective cover 27 may be made of metal. In addition, in order to facilitate installation and fixation, the top of theside wall 11 is provided with a steppedflange 111 protruding outward, and the fixing ring body 212 is provided with agrooved flange 2121 capable of snapping and fixing to the outside of the steppedflange 111, that is, the outer periphery of the fixing ring body 212 can be stamped with a tongue to be riveted to thepump housing 1, and in order to improve the sealing performance between thepump cover assembly 2 and thepump housing 1, thepump cover assembly 2 includes a sealingring 28 disposed between the steppedflange 111 and thegrooved flange 2121 which seals theside wall 11 and thesupport portion 21 . - Additionally, the present invention provides a washing appliance which includes the heating pump described above. Where the washing appliance may be a dishwasher or the like.
- The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited herein. Within the scope of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of each specific technical feature in any suitable manner. To avoid unnecessary repetition, the present invention does not describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and should be included by the protection scope of the present invention which is solely defined by the claims.
Claims (7)
- A heating pump, comprising: a pump housing (1), comprising:an opening; anda side wall (11) extending around the opening; anda pump cover assembly (2), comprising:an annular support portion (21) covering the opening; anda heating element (22) thermal-conductively mounted to the support portion (21);wherein the heating element (22) is separated from fluid in the heating pump by the support portion (21), and a surface of the support portion (21) in contact with the fluid is flat;wherein a plate-shaped support ring body (211) of the support portion (21) extends around a center line of the opening in a plane perpendicular to the center line;wherein a fixing ring body (212) of the support portion (21) is in connection with an outer periphery of the support ring body (211) and is configured for fixing to the top of the side wall (11);wherein a bent ring body (213) of the support portion (21) is in connection with an inner periphery of the support ring body (211) and is configured for connecting to an external pipe;wherein the heating element (22) is mounted on the support ring body (211);wherein the heating element (22) comprises an annular heating tube (221) with a gap and a first electrode (222) and a second electrode (223) disposed at two ends of the gap of the annular heating tube (221), respectively;wherein the annular heating tube (221) comprises a bottom surface in thermal contact with the support ring body (211) and a side surface connected to the bottom surface and extending in the circumferential direction of the support ring body (211);wherein the pump cover assembly (2) comprises a thermal conductive plate (23) configured to thermal-conductively connect the side surface and the support ring body (211);wherein the thermal conductive plate (23) comprises a first ring body (231) and a second ring body (232) connected to the first ring body (231);wherein the first ring body (231) and the second ring body (232) are in surface contact with the support ring body (211) and the side surface of the annular heating tube (221), respectively;wherein the pump cover assembly (2) comprises a temperature controller (24) in connection with the first electrode (222);wherein the second ring body (232) comprises a main ring body (2321) having an opening and being in contact with the annular heating tube (221) and a stepped portion (2322) located at the opening, both sides of the stepped portion (2322) in the circumferential direction are respectively spaced apart from both ends of the opening of the main ring body (2321);wherein the stepped portion (2322) comprises a vertical portion spaced from the annular heating tube (221) and a horizontal portion located above the annular heating tube (221) with a distance between the horizontal portion and the annular heating tube (221); andwherein the temperature controller (24) is mounted on the horizontal portion, and the temperature controller (24) comprises a first temperature-sensitive surface in contact with the stepped portion (2322).
- The heating pump according to claim 1, wherein the first ring body (231) and the second ring body (232) are respectively configured to be connected to the support ring body (211) and the side surface of the annular heating tube (221) by welding.
- The heating pump according to claim 1, wherein the distance between the horizontal portion and the annular heating tube (221) is at least 1 mm; and/or
the minimum distance between the temperature controller (24) and the first electrodes (222) has an arc length of 5-15 mm on the annular heating tube (221). - The heating pump according to one of claims 1 to 3, wherein the pump cover assembly (2) comprises a fuse (25) in connection with the second electrode (223), the fuse (25) comprises a second temperature-sensitive surface being in contact with the annular heating tube (221);
wherein the annular heating tube (221) comprises a top surface and the two apposite side surfaces connected between the top surface and the bottom surface, the area of the bottom surface is larger than the area of the top surface, and the fuse (25) is supported and mounted on the top surface. - The heating pump according to claim 4, wherein the pump cover assembly (2) comprises an insulation socket (26), wherein the temperature controller (24), the fuse (25) and the insulation socket (26) are connected in series between the first electrode (222) and the second electrode (223).
- The heating pump according to claim 5, wherein:the pump cover assembly (2) comprises a protective cover (27) located on the top of the annular heating tube (221), the temperature controller (24), the fuse (25) and the insulation socket (26); and/orthe top of the side wall (11) is provided with a stepped flange (111) protruding outward, and the fixing ring body (212) is provided with a grooved flange (2121) capable of being snap-fixed to an outside the stepped flange (111); the pump cover assembly (2) comprises a sealing ring (28) disposed between the stepped flange (111) and the grooved flange (2121) to seal the side wall (11) and the support portion (21)
- A washing appliance comprising the heating pump according to any one of claims 1-6.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711377633.4A CN108167230B (en) | 2017-12-19 | 2017-12-19 | Heating pump and washing electric appliance |
PCT/CN2017/119554 WO2019119507A1 (en) | 2017-12-19 | 2017-12-28 | Heating pump and washing appliance |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3751150A1 EP3751150A1 (en) | 2020-12-16 |
EP3751150A4 EP3751150A4 (en) | 2021-02-17 |
EP3751150B1 true EP3751150B1 (en) | 2024-04-03 |
Family
ID=62522530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17935583.9A Active EP3751150B1 (en) | 2017-12-19 | 2017-12-28 | Heating pump and washing appliance |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3751150B1 (en) |
CN (1) | CN108167230B (en) |
WO (1) | WO2019119507A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112294219B (en) * | 2019-07-29 | 2022-07-12 | 佛山市威灵洗涤电机制造有限公司 | Heating pump and household appliance with same |
CN111706520B (en) * | 2020-06-19 | 2021-08-27 | 佛山市威灵洗涤电机制造有限公司 | Shell assembly of electric pump, electric pump and dish washing machine |
CN116696833B (en) * | 2022-03-16 | 2024-03-19 | 贝克电热科技(深圳)有限公司 | Blade heating type heating pump cover and heating pump |
CN114738321B (en) * | 2022-04-07 | 2022-11-22 | 贝克电热科技(深圳)有限公司 | Blade formula heating pump cover and heat pump |
CN115150725A (en) * | 2022-06-29 | 2022-10-04 | 歌尔股份有限公司 | Loudspeaker and electronic equipment |
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EP1595489A1 (en) * | 2004-05-12 | 2005-11-16 | Askoll Holding S.r.l. | Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing-machines |
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CN203516209U (en) * | 2013-08-20 | 2014-04-02 | 杭州热威机电有限公司 | Heater connecting structure arranged on heating pump |
DE102014109625A1 (en) * | 2014-07-09 | 2016-01-14 | Hanning Elektro-Werke Gmbh & Co. Kg | pump assembly |
CN104456917A (en) * | 2014-11-06 | 2015-03-25 | 杭州佐帕斯工业有限公司 | Pump cavity electric heater with steam generating function |
JP6269452B2 (en) * | 2014-11-19 | 2018-01-31 | 株式会社豊田自動織機 | Turbo machine |
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2017
- 2017-12-19 CN CN201711377633.4A patent/CN108167230B/en active Active
- 2017-12-28 EP EP17935583.9A patent/EP3751150B1/en active Active
- 2017-12-28 WO PCT/CN2017/119554 patent/WO2019119507A1/en unknown
Patent Citations (3)
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EP1595489A1 (en) * | 2004-05-12 | 2005-11-16 | Askoll Holding S.r.l. | Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing-machines |
US20100119360A1 (en) * | 2008-11-13 | 2010-05-13 | Daniel Bredl | Heatable part of a pump housing |
US20160334133A1 (en) * | 2014-01-20 | 2016-11-17 | I.R.C.A. S.P.A. Industria Resistenze Corassale e Affini | Heater for household appliances |
Also Published As
Publication number | Publication date |
---|---|
WO2019119507A1 (en) | 2019-06-27 |
EP3751150A4 (en) | 2021-02-17 |
EP3751150A1 (en) | 2020-12-16 |
CN108167230A (en) | 2018-06-15 |
CN108167230B (en) | 2020-03-31 |
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