WO2022042695A1 - Pompe à eau, et chauffe-eau comportant cette dernière - Google Patents

Pompe à eau, et chauffe-eau comportant cette dernière Download PDF

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Publication number
WO2022042695A1
WO2022042695A1 PCT/CN2021/115091 CN2021115091W WO2022042695A1 WO 2022042695 A1 WO2022042695 A1 WO 2022042695A1 CN 2021115091 W CN2021115091 W CN 2021115091W WO 2022042695 A1 WO2022042695 A1 WO 2022042695A1
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WO
WIPO (PCT)
Prior art keywords
water pump
water
plate body
heat dissipation
bracket
Prior art date
Application number
PCT/CN2021/115091
Other languages
English (en)
Chinese (zh)
Inventor
张小林
张燕京
郑伟城
梁国荣
欧常福
Original Assignee
芜湖美的厨卫电器制造有限公司
美的集团股份有限公司
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Application filed by 芜湖美的厨卫电器制造有限公司, 美的集团股份有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2022042695A1 publication Critical patent/WO2022042695A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • 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
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • 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
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/5813—Cooling the control unit
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/22—Optical devices

Definitions

  • the present application relates to the technical field of electrical appliance manufacturing, and in particular, to a water pump and a water heater having the water pump.
  • the centrifugal water pump in the related art generates relatively large vibrations during operation, which results in relatively large working noise of the water heater and affects the user's comfort during use.
  • the present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the present application proposes a water pump, which has the advantages of low noise and high integration.
  • the present application also proposes a water heater with the water pump.
  • a water pump includes: a shielding sleeve, the end surface of the shielding sleeve is provided with a rotor slot and a stator slot; the stator slot; the rotating shaft, which is arranged in the rotor slot and is fixedly connected with the shielding sleeve; the rotor, which is rotatably fitted in the rotor slot and sleeved on the rotating shaft Outside; a pump cover, the pump cover is installed on the upper end face of the shielding sleeve, and the pump cover is integrally formed with a pump cover water inlet and a pump cover water outlet.
  • the water pump according to the embodiment of the present application has the advantages of low noise and high integration.
  • water pump according to the above embodiments of the present application may also have the following additional technical features:
  • the rotating shaft and the shielding sleeve are integrally formed or integrally formed by injection molding.
  • the water pump further includes a heat dissipation base shell, and the heat dissipation base shell is installed on the lower end surface of the shielding sleeve.
  • the water pump further includes a circuit board, a heat dissipation cavity is formed in the heat dissipation base shell, the circuit board is arranged in at least one of the stator slot and the heat dissipation cavity and is connected with the heat dissipation cavity.
  • a stator is electrically connected and is spaced apart from the circuit board to form a heat dissipation gap between the stator and the circuit board.
  • the heat dissipation cavity communicates with the stator slots.
  • the water pump further includes a bracket, the bracket is installed under the shielding sleeve, and the bracket is suitable for being installed on a water heater.
  • the bracket includes a central portion, a plurality of first lugs and a plurality of second lugs, the plurality of first lugs are spaced apart along the circumference of the central portion, and a plurality of The second lugs are spaced apart along the circumference of the central portion, the bracket via holes are formed on the first lugs, the second lugs include a shock absorbing section and a mounting section, the shock absorbing section The segment extends downwardly and outwardly from the central portion, the mounting segment is connected with the shock absorbing segment, the mounting segment is provided with an assembly through hole, and the bracket is adapted to pass through the assembly through hole.
  • the third bolt is installed on the water heater.
  • the projection of the bracket on the horizontal plane is located within a circumscribed circle of the projection of the shielding sleeve on the horizontal plane.
  • the water pump further includes a heat dissipation base shell and a bracket
  • the heat dissipation base shell is installed on the lower end surface of the shielding sleeve
  • the bracket is installed under the heat dissipation base shell
  • the bracket is suitable for
  • the heat dissipation base shell is provided with installation holes
  • the shield sleeve is provided with a shield sleeve through hole
  • the shield sleeve and the heat dissipation base shell are matched with each other by passing through the shield sleeve through hole.
  • the first bolts in the mounting holes are connected
  • the brackets are provided with bracket through holes
  • the brackets and the heat dissipation base shell are connected through the second bolts that pass through the bracket through holes and fit in the installation holes. .
  • a shock-absorbing protective cover is provided above the bracket.
  • the pump cover includes: a cover body, on which the pump cover water inlet is provided; a water outlet joint, where the pump cover water outlet is formed on the water outlet joint, and the The water outlet joint is connected with the cover body, the water outlet joint has a connection end connected to the cover body and a free end away from the cover body, and the connection between the end face of the free end and the peripheral surface is chamfered so as to be at the desired location.
  • the connection between the end surface of the free end and the peripheral surface forms a beveled surface, and the minimum angle between the beveled surface and the axial direction of the free end is smaller than the minimum angle between the beveled surface and the radial direction of the free end .
  • the minimum angle between the beveled surface and the axial direction of the free end is 10-25 degrees.
  • the water outlet joint has a water passage, and the water passage at least includes a gradually expanding section, and the inner diameter of the gradually expanding section gradually increases from the connection end to the free end.
  • the minimum angle between the inner peripheral surface and the axial direction of the tapered section is 2.5-10 degrees.
  • the cover body includes: a top wall, on which the water inlet of the pump cover is formed; a peripheral wall, which is arranged around the top wall and extends downward, the top wall The wall is inclined upward and inwardly extending from the peripheral wall, and the minimum angle between the top wall and the horizontal plane is 2-10 degrees.
  • the cover body is provided with a circumferential reinforcing rib extending in the circumferential direction of the cover body, and the cover body is provided with a plurality of radial reinforcements extending in the radial direction of the cover body
  • a plurality of the radial reinforcing ribs are arranged at intervals along the circumference of the cover body
  • the water outlet joint is provided with annular reinforcing ribs extending along the circumferential direction of the water outlet joint
  • the annular reinforcing ribs are connected with the plurality of At least one of the radial reinforcing ribs is connected.
  • the water pump further includes an impeller
  • the impeller includes: a first plate body provided with an impeller water inlet; a second plate body, the second plate body and the The rotors are connected, the second plate body is spaced apart from the first plate body to form a water passing gap; a blade is arranged in the water passing gap and along the circumferential direction of the first plate body They are arranged at intervals, wherein the ratio of the distance between the first plate body and the second plate body to the diameter of the first plate body is 0.02-0.15.
  • the distance between the first plate body and the second plate body is 1-5 mm, and the diameter of the first plate body is 30-50 mm.
  • the diameter of the water inlet of the impeller is 8-22 mm, and the radius of the imaginary circle tangent to the inner ends of the plurality of blades is 8-12 mm.
  • the blade is arc-shaped and has a first arc surface and a second arc surface opposite to each other, the first arc surface is located on the arc-shaped convex side of the blade, and the first arc surface is The two arc surfaces are located on one side of the arc-shaped depression of the blade.
  • the radius of the first arc surface is 10-36 mm, and the radius of the second arc surface is 5-25 mm.
  • the first arc surface is connected to the inner end surface and the outer end surface of the blade respectively
  • the inner end of the second arc surface is connected to the inner end surface of the blade
  • the second arc surface is connected to the inner end surface of the blade.
  • the outer end of the surface is connected with the outer end surface of the blade through an inclined surface, and the inclined surface extends from the second arc to the first arc and extends outward obliquely, and the inclined surface is in relation to the radial direction of the impeller.
  • the minimum angle between them is 0-25 degrees.
  • the imaginary line between the center of the first arc surface of each blade and the center of the first plate body and the inner end of the first arc surface of the blade and the The angle formed by the imaginary connecting line between the circle centers of the first plate body is 40-95 degrees
  • the imaginary connection line between the circle center of the second arc surface of each of the blades and the circle center of the first plate body is 40-95 degrees.
  • the angle formed by the line and the imaginary connecting line between the inner end of the first arc surface of the blade and the center of the first plate body is 45-75 degrees.
  • a water heater is provided, and the water heater includes the water pump according to the embodiment of the first aspect of the present application.
  • the water heater according to the embodiment of the present application has the advantages of low noise and high integration by using the water pump according to the embodiment of the first aspect of the present application.
  • FIG. 1 is a cross-sectional view of a water pump according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a water pump according to an embodiment of the present application.
  • FIG 3 is an exploded view of a water pump according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a water pump according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a pump cover of a water pump according to an embodiment of the present application.
  • FIG. 6 is a cross-sectional view of a pump cover of a water pump according to an embodiment of the present application.
  • FIG. 7 is a partial cross-sectional view of a pump cover of a water pump according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a rotor and an impeller of a water pump according to an embodiment of the present application.
  • FIG 9 is a partial cross-sectional view of an impeller of a water pump according to an embodiment of the present application.
  • water pump 1 shielding sleeve 100, rotor slot 101, rotating shaft 110, shielding sleeve through hole 120, guide edge 130, stator 200, support feet 210, rotor 300, rotor main body 310, rotor magnet 320, heat dissipation base shell 400, Heat dissipation cavity 401, positioning groove 402, cable hole 403, mounting hole 410, circuit board 420, power cable 421, bracket 500, center part 510, first lug 520, bracket through hole 521, second lug 530, assembly Through hole 531, shock absorption section 532, installation section 533, pump cover 600, top wall 601, peripheral wall 602, pump cover through hole 610, pump cover water inlet 620, water outlet joint 630, water passage 631, gradually expanding section 6311, Straight section 6312, annular reinforcing rib 632, beveled surface 633, cover body 640, circumferential reinforcing rib 641, radial reinforcing rib 642, impeller
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • the water pump 1 includes a shielding sleeve 100 , a stator 200 , a rotating shaft 110 and a rotor 300 .
  • the end surface of the shielding sleeve 100 is provided with a rotor slot 101 and a stator slot, and the stator slot is located outside the rotor slot 101 in the radial direction of the shielding sleeve 100 .
  • the stator 200 is fitted in the stator slot.
  • the rotating shaft 110 is disposed in the rotor slot 101 and is integrally formed with the shielding sleeve 100 .
  • the rotor 300 is rotatably fitted in the rotor slot 101 and sleeved outside the rotating shaft 110 .
  • the rotating shaft 110 and the shielding sleeve 100 are fixed, so that the rotor 300 is sleeved on the rotating shaft 110, and the rotor 300 rotates relative to the rotating shaft and the shielding sleeve.
  • the process of assembling the rotating shaft 110 on the pump cover can be omitted, which can not only improve the assembly efficiency of the rotating shaft 110, but also improve the production efficiency of the water pump 1 and reduce the time required for assembling the water pump 1.
  • the number of parts can improve the integration of the water pump 1, and can avoid the assembly process affecting the position accuracy of the rotating shaft 110, improve the stability of the rotating shaft 110, reduce the noise generated when the water pump 1 is running, and improve the user's comfort when using the water heater.
  • the stator 200 and the rotor 300 can be centrally installed in the shielding sleeve 100, and the shielding sleeve 100 can provide insulation and shielding effect while protecting the stator 200 and the stator.
  • the rotor 300 has the functions of positioning, supporting and protecting, thereby eliminating other structures for positioning and protecting the stator 200 and the rotor 300 , further simplifying the structure of the water pump 1 and improving the integration of the water pump 1 .
  • the water pump 1 according to the embodiment of the present application has the advantages of low noise and high integration.
  • the water pump 1 includes a shielding sleeve 100 , a stator 200 , a rotating shaft 110 and a rotor 300 .
  • the rotating shaft 110 and the shielding sleeve 100 are integrally formed or integrally formed by injection molding. In this way, it is convenient for the rotating shaft 110 and the shielding sleeve 100 to form an integral structure, thereby improving the stability and integration of the water pump 1 .
  • the rotating shaft 110 is a ceramic shaft. In this way, the rotating shaft 110 can have good wear resistance, and can avoid interfering with the rotation of the rotor 300 .
  • the rotor slot 101 is formed on the upper end face of the shielding sleeve 100 (the up and down direction is shown by the arrow in the figure and is only for the convenience of description, and does not limit the actual installation direction of the water pump 1 ). ), the stator slot is formed on the lower end face of the shielding sleeve 100 . In this way, the installation of the stator 200 and the rotor 300 may be facilitated, and the connection of the rotor 300 and the stator 200 with other structures may be facilitated.
  • the water pump 1 further includes a heat dissipation base shell 400 and a bracket 500 , the heat dissipation base shell 400 is installed on the lower end surface of the shielding sleeve 100 , the bracket 500 is installed under the heat dissipation base shell 400 , and the bracket 500 is suitable for being installed in on the water heater.
  • the water pump 1 can be installed on the water heater by using the bracket 500 , and the water pump 1 can be radiated by the heat dissipation base shell 400 to ensure the normal operation of the water pump 1 .
  • the water pump 1 further includes a circuit board 420 .
  • the circuit board 420 is electrically connected to the stator 200 .
  • a heat dissipation cavity 401 is formed in the heat dissipation base case 400 .
  • the circuit board 420 is disposed in at least one of the heat dissipation cavity 401 and the stator slot, and the stator 200 is spaced apart from the circuit board 420 to form a heat dissipation gap between the stator 200 and the circuit board 420 .
  • the heat dissipation base shell 400 can be used to dissipate heat to the circuit board 420, so as to prevent the heat generated by the stator 200 during operation and the heat generated by other components on the circuit board 420 from affecting the normal operation of the circuit board 420, thereby ensuring that the circuit board 420 is at a suitable temperature stable operation inside.
  • the lower end surface of the stator 200 is provided with a plurality of legs 210 , the plurality of legs 210 are spaced apart along the circumferential direction of the stator 200 , and the legs 210 are clamped to the circuit board 420 .
  • the installation of the circuit board 420 can be facilitated, the distance between the circuit board 420 and the stator 200 can be easily controlled, and the circuit board 420 can be close to the heat dissipation base case 400 to facilitate heat dissipation of the circuit board 420 .
  • the lower end surface of the shielding sleeve 100 is provided with a guide edge 130 , and the guide edge 130 is suitable for extending into the heat dissipation cavity 401 .
  • the guiding edge can be used for guiding, which facilitates the fitting and installation of the shielding sleeve 100 and the heat dissipation base shell 400 .
  • the lower part of the peripheral wall of the heat dissipation base shell 400 is provided with a positioning groove 402 , and a part of the circuit board 420 is fitted in the positioning groove 402 . In this way, the installation of the circuit board 420 can be facilitated, and the positioning of the circuit board 420 can be facilitated.
  • the peripheral wall of the heat dissipation base case 400 is provided with a wire hole 403 , the wire hole 403 communicates with the upper end surface of the heat dissipation base case 400 , and the power line 421 is electrically connected to the circuit board 420 through the wire hole 403 . In this way, the connection between the power line 421 and the circuit board 420 can be facilitated.
  • the heat dissipation cavity 401 communicates with the stator slots. In this way, the electrical connection between the circuit board 420 and the stator 200 can be facilitated, and heat can be dissipated from the stator 200 .
  • the circuit board 420 is adjacent to the bottom wall of the heat dissipation base case 400 . In this way, the heat dissipation effect on the circuit board 420 can be improved.
  • the heat dissipation base case 400 may be an aluminum base case. In this way, the structural strength and heat dissipation effect of the heat dissipation base case 400 can be ensured.
  • the heat dissipation base case 400 is provided with a mounting hole 410
  • the shield sleeve 100 is provided with a shield sleeve via hole 120
  • the shield sleeve 100 and the heat dissipation base case 400 pass through the shield sleeve via hole.
  • the bracket 500 is provided with a bracket via hole 521, and the bracket 500 and the heat dissipation base shell 400 are connected by a second bolt 920 fitted in the mounting hole 410 through the bracket via hole 521. .
  • the bracket 500 includes a central portion 510 , a plurality of first lugs 520 and a plurality of second lugs 530 , and the plurality of first lugs 520 are along the circumference of the central portion 510 .
  • the plurality of second lugs 530 are arranged at intervals along the circumference of the central portion 510, the bracket through holes 521 are formed on the first lugs 520, and the second lugs 530 include a shock absorbing section 532 and a mounting section 533, reducing The shock section 532 extends downward and outward from the central portion 510 slantingly.
  • the mounting section 533 is connected to the shock absorbing section 532.
  • the mounting section 533 is provided with an assembly through hole 531.
  • the bracket 500 is adapted to pass through the third bolt passing through the assembly through hole 531. Installed on the water heater. In this way, the setting of the bracket 500 can be facilitated, and the second lugs 530 can be used to play a shock-absorbing and buffering role, thereby further slowing down the vibration of the water pump 1 and reducing the noise of the water pump 1 .
  • the bracket 500 is fabricated from the same sheet material. Specifically, the bracket 500 can be cut into a flat plate first, and then the second lugs 530 can be bent to form the damping section 532 and the mounting section 533 . In this way, the processing and manufacture of the bracket 500 can be facilitated, the number of parts of the water pump 1 can be reduced, and the integration degree of the water pump 1 can be improved.
  • a shock absorbing protective cover 800 is sandwiched between the bracket 500 and the heat dissipation base shell 400 . Since the bracket 500 is directly connected to the heat dissipation base shell 400 in the related art, and the shock-absorbing protective cover 800 is arranged below the bracket 500 and between the bracket 500 and the installation plate of the water heater, the shock-absorbing protective cover 800 is easy to install when the bracket 500 is bolted. Block the threaded holes on the water heater, resulting in blind tapping of the bolts, affecting the assembly efficiency of the water pump 1.
  • the shock-absorbing protective cover 800 By arranging the shock-absorbing protective cover 800 between the bracket 500 and the heat dissipation base shell 400, the same shock-absorbing effect can be ensured, and the bracket 500 can be installed on the water heater first during assembly. Below the bracket 500 , the threaded hole will not be blocked by the shock-absorbing protective sleeve 800 , which can avoid blind tapping of bolts, ensure the installation efficiency of the third bolt, and improve the assembly efficiency of the bracket 500 .
  • the shock-absorbing protective cover 800 is provided with a protective cover through hole 810 .
  • the second bolt 920 passes through the boot through hole 810 . This can facilitate the installation and positioning of the shock absorbing shield 800 .
  • the water pump 1 further includes a pump cover 600 , and the pump cover 600 is installed on the upper end surface of the shielding sleeve 100 .
  • the pump cover 600 can be used to cover the upper surface of the shielding sleeve 100 and cover the rotor groove 101 .
  • the outer surface of the shielding sleeve 100 , the pump cover 600 and the heat dissipation base shell 400 together constitute the outer layer structure of the water pump 1 .
  • the pump cover 600 is provided with a pump cover through hole 610 , and the first bolt 910 passes through the pump cover through hole 610 and the shielding sleeve through hole 120 to fit in the installation hole 410 to connect the pump cover 600 , the shielding sleeve 100 and the heat dissipation base shell 400 .
  • the installation and positioning of the pump cover 600 can be realized by using the first bolts 910 .
  • the projection of the bracket 500 on the horizontal plane is located within the circumcircle of the projection of the heat dissipation base shell 400 on the horizontal plane, and within the circumscribed circle of the projection of the shielding sleeve 100 on the horizontal plane, and the projection of the pump cover 600 on the horizontal plane. inside the circumcircle.
  • the projection of the center portion 510 on the horizontal plane is located within the projection of the heat dissipation base shell 400 on the horizontal plane, the projection of the shielding sleeve 100 on the horizontal plane, and the projection of the pump cover 600 on the horizontal plane.
  • the size of the bracket 500 can be controlled so that the outer edge of the bracket 500 does not exceed the outer edge of other parts of the water pump 1, so as to prevent the bracket 500 from interfering with the installation of the water pump 1, making the water pump 1 suitable for a narrower installation environment.
  • the pump cover 600 includes a cover body 640 and a water outlet joint 630 .
  • the water inlet 620 of the pump cover is arranged at the top center of the cover body 640 .
  • the pump cover water inlet 620 and the pump cover water outlet are integrally formed on the pump cover, and the central axes of the pump cover water inlet and the pump cover water outlet are vertically arranged.
  • the cover body 640 is provided with a pump cover water inlet 620 .
  • the water outlet joint 630 is connected with the cover body 640.
  • the water outlet joint 630 has a connection end connected to the cover body 640 and a free end away from the cover body 640.
  • a beveled surface 633 is formed at the connection between the end surface and the peripheral surface. The minimum angle a1 between the beveled surface 633 and the axial direction of the free end is smaller than the minimum angle between the beveled surface 633 and the radial direction of the free end.
  • the minimum angle a1 between the beveled surface 633 and the axial direction of the free end is 10-25 degrees. In this way, the collision between the water outlet joint 630 and the pipeline can be further avoided, the reliability of the water outlet joint 630 can be further improved, and the noise can be reduced.
  • the water outlet joint 630 has a water passage 631, and the water passage 631 at least includes a gradually expanding section 6311, and the inner diameter of the expanding section 6311 gradually increases from the connecting end to the free end.
  • the water passage 631 can have better hydraulic performance
  • the water outlet joint 630 can have better pressure resistance
  • the lift performance of the water pump 1 can be improved.
  • the water passage 631 further includes a straight section 6312, the inner diameter of the straight section 6312 is uniform, and the straight section 6312 is connected to one end of the gradually expanding section 6311 close to the free end. In this way, it is convenient for the water outlet joint 630 to be connected with other pipelines.
  • the central axes of the tapered section 6311 and the straight section 6312 coincide.
  • the water outlet of the water passage 631 can be further ensured to be smooth, and the pressure resistance of the water outlet joint 630 can be improved.
  • the axis of the water outlet channel is tangent to the circumferential surface of the inner cavity of the cover body.
  • the central axes of the gradually expanding section 6311 and the straight section 6312 are perpendicular to the radial direction of the cover body 640 . In this way, the water outlet of the water passage 631 can be further ensured to be smooth, and the pressure resistance of the water outlet joint 630 can be improved.
  • the minimum angle a2 between the inner peripheral surface of the gradually expanding section 6311 and the axial direction of the gradually expanding section 6311 is 2.5-10 degrees.
  • the hydraulic performance of the water passage 631 can be further ensured, the smooth water outlet can be ensured, the pressure resistance can be improved, and the lift effect of the water pump 1 can be improved.
  • FIG. 7 shows a water pump 1 according to a specific example of the present application.
  • the cover body 640 includes a top wall 601 and a peripheral wall 602 .
  • the pump cover water inlet 620 is formed on the top wall 601 .
  • the peripheral wall 602 is disposed around the top wall 601 and extends downward, and the top wall 601 extends upwardly and inwardly obliquely from the peripheral wall 602 . In this way, the cover body 640 can have better compression resistance, and the reliability of the pump cover 600 can be improved.
  • the minimum angle a3 between the top wall 601 and the horizontal plane is 2-10 degrees.
  • the compression resistance performance of the cover body 640 can be further ensured, and the reliability of the pump cover 600 can be further improved.
  • FIG. 4 shows a water pump 1 according to a specific example of the present application.
  • the cover body 640 is provided with a circumferential reinforcing rib 641 extending along the circumferential direction of the cover body 640
  • the cover body 640 is provided with a plurality of radial reinforcing ribs 642 extending along the radial direction of the cover body 640 .
  • the radial reinforcing ribs 642 are arranged at intervals along the circumferential direction of the cover body 640 .
  • the structural strength of the cover body 640 can be reinforced by the circumferential reinforcing ribs 641 and the radial reinforcing ribs 642 along the stress direction of the cover body 640 , thereby ensuring the structural strength and reliability of the cover body 640 .
  • the number of the radial reinforcing ribs 642 is the same as the number of coils of the stator 200 or an integer multiple of the number of coils of the stator 200 .
  • the water outlet joint 630 is provided with an annular reinforcing rib 632 extending along the circumferential direction of the water outlet joint 630 .
  • the structural strength of the water outlet joint 630 can be reinforced by the annular reinforcing rib 632 , thereby ensuring the structural strength and reliability of the water outlet joint 630 .
  • the annular reinforcing rib 632 is connected to at least one of the plurality of radial reinforcing ribs 642 .
  • the radial reinforcing rib 642 and the annular reinforcing rib 632 can be connected into one body, which facilitates the mutual transmission of forces, makes the force on the pump cover 600 more uniform, and further improves the structural strength and reliability of the pump cover 600 .
  • the circumferential reinforcing rib 641 is opposite to the stator coil of the water pump where the pump cover 600 is located in the up-down direction. In this way, the circumferential reinforcing ribs 641 can reasonably strengthen the pump cover 600 according to the position of the stator coil, so that the force of the pump cover 600 is more uniform and reasonable, and the structural strength of the pump cover is ensured.
  • the pump cover 600 is made of glass fiber reinforced polyphenylene sulfide material. In this way, the structural strength and toughness of the pump cover 600 can be further ensured, thereby ensuring the reliability of the pump cover 600 .
  • the water pump 1 further includes an impeller 700 , and the impeller 700 includes a first plate body 710 , a second plate body 720 and blades 730 .
  • the first plate body 710 is provided with an impeller water inlet 701 .
  • the second plate body 720 is connected to the rotor 300 , and the second plate body 720 is spaced apart from the first plate body 710 to form the water passing gap 702 .
  • the vanes 730 are arranged in the water passing gap 702 and are arranged at intervals along the circumferential direction of the first plate body 710 .
  • the rotor 300 includes a rotor body 310 and a rotor magnet 320 .
  • the rotor body 310 is integrally formed with the second plate body 720 .
  • the rotor magnet 320 and the rotor main body 310 are insert-molded, and the rotor magnet 320 is sleeved outside the rotor main body 310 .
  • the rotor body 310 is cylindrical, and includes a portion above the rotor magnet 320 and a portion extending into the rotor magnet 320 .
  • the rotor magnet 320 is sleeved outside the rotor body 310 in a barrel shape. In this way, the assembly process of the water pump 1 can be further simplified, and the assembly efficiency and integration degree of the water pump 1 can be improved.
  • the ratio of the distance b between the first plate body 710 and the second plate body 720 to the diameter D2 of the first plate body 710 is 0.02-0.15. This can make the structure of the impeller 700 more reasonable, reduce the water flow resistance of the impeller 700, reduce the noise and vibration when the impeller 700 rotates, and reduce the power consumption of the water pump.
  • the ratio of the distance b between the first plate body 710 and the second plate body 720 to the total height of the rotor main body 310 and the rotor magnet 320 in the up-down direction is 0.05-0.15. This can make the structure of the impeller 700 more reasonable, reduce the water flow resistance of the impeller 700, reduce the noise and vibration when the impeller 700 rotates, and reduce the power consumption of the water pump.
  • the vanes 730 are integrally formed on the first plate body 710 .
  • the assembly process of the impeller 700 can be simplified, the number of parts of the impeller 700 can be reduced, and the production efficiency of the impeller 700 can be improved.
  • the second plate body 720 is provided with a groove, and the lower end of the blade 730 is fitted in the groove.
  • the blade 730 can be positioned by using the groove, so as to improve the stability of the blade 730 and facilitate the connection of the first plate body 710 and the second plate body 720.
  • the blade 730 is connected to the second plate body 720 by laser welding. In this way, the connection strength between the first plate body 710 and the second plate body 720 can be ensured, the sealing between the lower end of the blade 730 and the second plate body 720 can be ensured, and the driving effect of the impeller 700 on the water flow can be ensured.
  • the distance b between the first plate body 710 and the second plate body 720 is 1-5 mm, and the diameter D2 of the first plate body 710 is 30-50 mm. Specifically, the distance b between the first plate body 710 and the second plate body 720 is 3 mm, and the diameter D2 of the first plate body 710 is 40 mm. In this way, the size of the impeller 700 can be further reasonably planned.
  • FIG. 9 shows a water pump 1 according to a specific example of the present application.
  • the diameter D1 of the impeller water inlet 701 is 8-22 mm. In this way, the size of the impeller water inlet 701 can be more reasonable, and the water intake can be ensured.
  • the radius R3 of the imaginary circle tangent to the inner ends of the plurality of blades 730 is 8-12 mm. In this way, the arrangement of the blades 730 can be more reasonable, and the driving effect of the impeller 700 on the water flow can be ensured.
  • the blade 730 is arc-shaped and has opposite first arc surfaces 731 and second arc surfaces 732 .
  • the two arc surfaces 732 are located on one side of the arc-shaped depression of the blade 730 , the radius R1 of the first arc surface 731 is 10-36 mm, and the radius R2 of the second arc surface 732 is 5-25 mm. This can make the structure of the blade 730 more reasonable, reduce the water flow resistance of the blade 730, and ensure the driving effect of the impeller 700 on the water flow.
  • the first arc surface 731 is connected to the inner end surface and the outer end surface of the blade 730 respectively
  • the inner end of the second arc surface 732 is connected to the inner end surface of the blade 730
  • the outer end of the second arc surface 732 It is connected with the outer end surface of the blade 730 through the inclined surface 733.
  • the inclined surface 733 extends from the second arc surface 732 to the first arc surface 731 and outwards.
  • the minimum angle c1 between the inclined surface 733 and the radial direction of the impeller 700 is 0- 25 degree. This can make the structure of the blade 730 more reasonable, reduce the water flow resistance of the blade 730, and further ensure the driving effect of the blade 730 on the water flow.
  • the imaginary line between the center of the first arc surface 731 of each blade 730 and the center of the first plate body 710 and the inner end of the first arc surface 731 of the blade 730 and the The angle c2 formed by the imaginary line between the centers of the plates 710 is 40-95 degrees.
  • the angle c3 formed by the imaginary connecting line between the inner end of the first arc surface 731 of the 730 and the center of the circle of the first plate body 710 is 45-75 degrees. This can make the arrangement of the blades 730 more reasonable, reduce the water flow resistance of the blades 730, and ensure the driving effect of the impeller 700 on the water flow.
  • sealing rings 930 are provided between the pump cover 600 and the shielding sleeve 100 , between the pump cover 600 and the impeller 700 and outside the water outlet joint 630 . This can ensure the tightness of the water pump 1 .
  • spacers 940 are provided between the rotor 300 and the shielding sleeve 100 and between the rotor 300 and the pump cover 600 . Spacer 940 may be a ceramic spacer. In this way, the smooth rotation of the rotor 300 can be ensured, the frictional resistance can be reduced, and the rotational stability of the rotor 300 can be improved.
  • the water heater according to the embodiment of the present application is described below.
  • the water heater according to the embodiment of the present application includes the water pump 1 according to the above-described embodiment of the present application.
  • the water heater according to the embodiment of the present application has the advantages of low noise and high integration by using the water pump 1 according to the above-mentioned embodiment of the present application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Pompe à eau et chaufe-eau. La pompe à eau comprend un manchon de protection (100), un stator (200), un arbre de rotation (110), un rotor (300) et un couvercle de pompe (600), une face d'extrémité du manchon de protection (100) étant pourvue d'une fente de rotor (101) et d'une fente de stator ; le stator (200) est installé dans la fente de stator ; l'arbre de rotation (110) est disposé dans la fente de rotor (101) et relié à demeure au manchon de protection (100) ; le rotor (300) est emmanché à l'extérieur de l'arbre de rotation (110) et monté rotatif dans la fente de rotor (101) ; et le couvercle de pompe (600) est monté sur une face d'extrémité supérieure du manchon de protection (100). La pompe à eau peut réduire le nombre de pièces pendant l'assemblage, améliorer le niveau d'intégration de la pompe à eau, empêcher l'arbre de rotation d'influer sur la précision de positionnement pendant l'assemblage, améliorer la stabilité de l'arbre de rotation, et réduire le bruit produit pendant le fonctionnement de la pompe à eau.
PCT/CN2021/115091 2020-08-27 2021-08-27 Pompe à eau, et chauffe-eau comportant cette dernière WO2022042695A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010879599.6A CN114109852A (zh) 2020-08-27 2020-08-27 水泵和具有其的热水器
CN202010879599.6 2020-08-27

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Publication Number Publication Date
WO2022042695A1 true WO2022042695A1 (fr) 2022-03-03

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108005895A (zh) * 2016-12-01 2018-05-08 佛山市顺德区美的饮水机制造有限公司 增压泵、净水机及热水器
CN109416058A (zh) * 2016-07-04 2019-03-01 阿莫泰克有限公司 水泵
CN210070229U (zh) * 2019-04-10 2020-02-14 华帝股份有限公司 一种循环泵减振结构及应用其的零冷水热水器
US20200072224A1 (en) * 2018-08-29 2020-03-05 Johnson Electric International AG Electric coolant pump and manufacturing method for movable unit of the same
CN210839109U (zh) * 2019-12-17 2020-06-23 常州雷利电机科技有限公司 转子组件及无刷直流电机和电子水泵
CN213808111U (zh) * 2020-08-27 2021-07-27 芜湖美的厨卫电器制造有限公司 叶轮、水泵和热水器
CN213899312U (zh) * 2020-08-27 2021-08-06 芜湖美的厨卫电器制造有限公司 水泵和具有其的热水器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109416058A (zh) * 2016-07-04 2019-03-01 阿莫泰克有限公司 水泵
CN108005895A (zh) * 2016-12-01 2018-05-08 佛山市顺德区美的饮水机制造有限公司 增压泵、净水机及热水器
US20200072224A1 (en) * 2018-08-29 2020-03-05 Johnson Electric International AG Electric coolant pump and manufacturing method for movable unit of the same
CN210070229U (zh) * 2019-04-10 2020-02-14 华帝股份有限公司 一种循环泵减振结构及应用其的零冷水热水器
CN210839109U (zh) * 2019-12-17 2020-06-23 常州雷利电机科技有限公司 转子组件及无刷直流电机和电子水泵
CN213808111U (zh) * 2020-08-27 2021-07-27 芜湖美的厨卫电器制造有限公司 叶轮、水泵和热水器
CN213899312U (zh) * 2020-08-27 2021-08-06 芜湖美的厨卫电器制造有限公司 水泵和具有其的热水器

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