WO2022042693A1 - 叶轮、水泵和热水器 - Google Patents

叶轮、水泵和热水器 Download PDF

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Publication number
WO2022042693A1
WO2022042693A1 PCT/CN2021/115087 CN2021115087W WO2022042693A1 WO 2022042693 A1 WO2022042693 A1 WO 2022042693A1 CN 2021115087 W CN2021115087 W CN 2021115087W WO 2022042693 A1 WO2022042693 A1 WO 2022042693A1
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WO
WIPO (PCT)
Prior art keywords
plate body
impeller
water
arc surface
rotor
Prior art date
Application number
PCT/CN2021/115087
Other languages
English (en)
French (fr)
Inventor
张小林
梁国荣
郑伟城
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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Filing date
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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 WO2022042693A1 publication Critical patent/WO2022042693A1/zh

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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
    • 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
    • F04D29/24—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
    • F04D29/40—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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • 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

Definitions

  • the present application relates to the technical field of electrical appliance manufacturing, and in particular, to an impeller, a water pump having the impeller, and a water heater having the water pump.
  • the impeller has poor stability during rotation, which not only increases the power consumption of the water pump, but also tends to generate noise, which affects the comfort of the user during use.
  • the present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an impeller, which has the advantages of stable rotation and low noise.
  • the present application also proposes a water pump with the impeller.
  • the present application also proposes a water heater with the water pump.
  • an impeller is proposed according to an embodiment of the first aspect of the present application.
  • the impeller includes: a first plate body, on which an impeller water inlet is arranged; a second plate body, the The second plate body is spaced apart from the first plate body to form a water passing gap between the first plate body and the second plate body that communicates with the water inlet of the impeller; a plurality of blades, a plurality of all The blades are arranged in the water passing gap and are arranged at intervals along the circumferential direction of the first plate body; the rotor body is provided with a rotor magnet, and the rotor body and the second plate body are integrally formed .
  • the impeller according to the embodiment of the present application has the advantages of stable rotation and low noise.
  • impeller according to the above embodiments of the present application may also have the following additional technical features:
  • 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 ratio of the distance between the first plate body and the second plate body to the total height of the rotor body and the rotor magnet in the up-down direction is 0.05-0.15.
  • the rotor magnet is insert-molded with the rotor body, and the rotor magnet is sleeved outside the rotor body.
  • the rotor body and the second plate body are integrally formed.
  • the blade is integrally formed on the first plate body or the second plate body.
  • the second plate body is provided with a groove, and the lower end of the blade fits in the groove.
  • 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.
  • 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.
  • 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 lines between the centers of the first plate bodies is 40-95 degrees.
  • the imaginary line between the center of the second 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 lines between the centers of the first plate bodies is 45-75 degrees.
  • a water pump is provided, and the water pump includes the impeller according to the embodiment of the first aspect of the present application.
  • the water pump according to the embodiment of the present application has the advantages of low power consumption and low noise by using the impeller according to the embodiment of the first aspect of the present application.
  • a water heater is provided, and the water heater includes the water pump according to the embodiment of the second aspect of the present application.
  • the water heater according to the embodiment of the present application has the advantages of low power consumption and low noise by using the water pump according to the embodiment of the second 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 impeller 700 includes a first plate body 710 , a second plate body 720 and a plurality of blades 730 .
  • the first plate body 710 is provided with an impeller water inlet 701 .
  • the second plate body 720 is spaced apart from the first plate body 710 to form a water passage gap 702 between the first plate body 710 and the second plate body 720 that communicates with the impeller water inlet 701 .
  • a plurality of 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 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.
  • the water in the water passing gap 702 flows in the direction away from the center of the impeller 700 through the agitation of the impeller 700 under the rotation of the impeller 700, thereby realizing the driving of the water flow. .
  • 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, make the rotation of the impeller 700 more stable, reduce the noise and vibration when the impeller 700 rotates, and reduce the power consumption of the water pump.
  • the impeller 700 according to the embodiment of the present application has the advantages of stable rotation and low noise.
  • the impeller 700 includes a first plate body 710 , a second plate body 720 and a plurality of blades 730 .
  • the impeller 700 further includes a rotor body 310 , the rotor body 310 is provided with a rotor magnet 320 , and the rotor body 310 is connected to the second plate body 720 .
  • the rotor magnet 320 is insert-molded with the rotor main body 310 , 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.
  • the rotor body 310 and the second plate body 720 are integrally formed.
  • 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 structure of the impeller 700 is more reasonable, the water flow resistance of the impeller 700 is reduced, the rotation of the impeller 700 is more stable, the noise and vibration when the impeller 700 is rotated is reduced, and the power consumption of the water pump is reduced.
  • 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 or the second plate body 720 .
  • 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.
  • the water pump 1 according to the embodiment of the present application is described below.
  • the water pump 1 according to the embodiment of the present application includes the impeller 700 according to the above-described embodiment of the present application.
  • the water pump 1 according to the embodiment of the present application has the advantages of low power consumption and low noise by using the impeller 700 according to the above-mentioned embodiment of the present application.
  • 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 shielding sleeve 100 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 be improved, the integration of the water pump 1 can be improved, and the positional accuracy of the rotating shaft 110 can be prevented from being affected by the assembly process, the stability of the rotating shaft 110 can be improved, the noise generated when the water pump 1 is running can be reduced, and the user's comfort when using the water heater can be improved.
  • 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 approached 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 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 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 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 mm.
  • 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 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 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 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 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 .
  • 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 power consumption and low noise by using the water pump 1 according to the above-mentioned embodiment of the present application.

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Abstract

一种叶轮、水泵和热水器，包括第一板体（710）、第二板体（720）、叶片（730）和转子主体（310），第一板体（710）上设有叶轮进水口（701），第二板体（720）与第一板体（710）间隔设置以在第一板体（710）和第二板体（720）之间形成与叶轮进水口（701）连通的过水间隙（702），多个叶片（730）设置在过水间隙（702）内，转子主体（310）与第二板体（720）一体成型。该叶轮能够提高转动稳定性，减少噪音，降低功耗。

Description

叶轮、水泵和热水器
相关申请的交叉引用
本申请基于申请号为202021831468.2，申请日为2020年08月27日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及电器制造技术领域，具体而言，涉及一种叶轮、具有所述叶轮的水泵和具有所述水泵的热水器。
背景技术
具有零冷水功能的燃气热水器，为了避免排出冷水，需要在进水管路增加离心水泵使管内的水以一定流量流动。
相关技术中的离心水泵，其叶轮在转动过程中稳定性较差，不仅会导致水泵的功耗增大，而且易产生噪音，影响用户使用时的舒适性。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请提出一种叶轮，该叶轮具有转动稳定、噪音小等优点。
为此，本申请还提出一种具有所述叶轮的水泵。
本申请还提出一种具有所述水泵的热水器。
为实现上述目的，根据本申请的第一方面的实施例提出一种叶轮，所述叶轮包括：第一板体，所述第一板体上设有叶轮进水口；第二板体，所述第二板体与所述第一板体间隔设置以在所述第一板体和所述第二板体之间形成与所述叶轮进水口连通的过水间隙；多个叶片，多个所述叶片设在所述过水间隙内且沿所述第一板体的周向间隔设置；转子主体，所述转子主体上设有转子磁体，所述转子主体与所述第二板体一体成型。
根据本申请实施例的叶轮，具有转动稳定、噪音小等优点。
另外，根据本申请上述实施例的叶轮还可以具有如下附加的技术特征：
根据本申请的一个实施例，所述第一板体与所述第二板体之间的距离与所述第一板体的直径之比为0.02-0.15。
根据本申请的一个实施例，所述第一板体与所述第二板体之间的距离与所述转子主体和所述转子磁体在上下方向上的总高度之比为0.05-0.15。
根据本申请的一个实施例，所述转子磁体与所述转子主体镶嵌注塑，所述转子磁体 套设在所述转子主体外部。
根据本申请的一个实施例，所述转子主体与所述第二板体一体成型。
根据本申请的一个实施例，所述叶片一体形成在所述第一板体上或第二板体上。
根据本申请的一个实施例，所述第二板体上设有凹槽，所述叶片的下端配合在所述凹槽内。
根据本申请的一个实施例，所述第一板体与所述第二板体之间的距离为1-5毫米，所述第一板体的直径为30-50毫米。
根据本申请的一个实施例，所述叶轮进水口的直径为8-22毫米。
根据本申请的一个实施例，与多个所述叶片内端相切的假想圆的半径为8-12毫米。
根据本申请的一个实施例，所述叶片为弧形且具有相对的第一弧面和第二弧面，所述第一弧面位于所述叶片的弧形凸出的一侧，所述第二弧面位于所述叶片的弧形凹陷的一侧。
根据本申请的一个实施例，所述第一弧面的半径为10-36毫米。
根据本申请的一个实施例，所述第二弧面的半径为5-25毫米。
根据本申请的一个实施例，所述第一弧面分别与所述叶片的内端面和外端面相连，所述第二弧面的内端与所述叶片的内端面相连，所述第二弧面的外端与所述叶片的外端面通过倾斜面相连，所述倾斜面由所述第二弧面向所述第一弧面且向外倾斜延伸，所述倾斜面与所述叶轮径向之间的最小角度为0-25度。
根据本申请的一个实施例，每个所述叶片的所述第一弧面的圆心与所述第一板体圆心之间的假想连线以及该叶片的所述第一弧面的内端与所述第一板体圆心之间的假想连线所呈的角度为40-95度。
根据本申请的一个实施例，每个所述叶片的所述第二弧面的圆心与所述第一板体圆心之间的假想连线以及该叶片的所述第一弧面的内端与所述第一板体圆心之间的假想连线所呈的角度为45-75度。
根据本申请的第二方面的实施例提出一种水泵，所述水泵包括根据本申请的第一方面的实施例所述的叶轮。
根据本申请实施例的水泵，通过利用根据本申请的第一方面的实施例所述的叶轮，具有功耗低、噪音小等优点。
根据本申请的第三方面的实施例提出一种热水器，所述热水器包括根据本申请的第二方面的实施例所述的水泵。
根据本申请实施例的热水器，通过利用根据本申请的第二方面的实施例所述的水泵，具有功耗低、噪音小等优点。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请实施例的水泵的剖视图。
图2是根据本申请实施例的水泵的结构示意图。
图3是根据本申请实施例的水泵的爆炸图。
图4是根据本申请实施例的水泵的结构示意图。
图5是根据本申请实施例的水泵的泵盖的结构示意图。
图6是根据本申请实施例的水泵的泵盖的剖视图。
图7是根据本申请实施例的水泵的泵盖的局部剖视图。
图8是根据本申请实施例的水泵的转子和叶轮的结构示意图。
图9是根据本申请实施例的水泵的叶轮的局部剖视图。
附图标记：水泵1、屏蔽套100、转子槽101、转轴110、屏蔽套过孔120、导向沿130、定子200、支脚210、转子300、转子主体310、转子磁体320、散热基壳400、散热腔401、定位槽402、过线孔403、安装孔410、电路板420、电源线421、支架500、中心部510、第一凸耳520、支架过孔521、第二凸耳530、装配过孔531、减震段532、安装段533、泵盖600、顶壁601、周壁602、泵盖过孔610、泵盖进水口620、出水接头630、过水通道631、渐扩段6311、平直段6312、环形加强筋632、斜角面633、盖体640、周向加强筋641、径向加强筋642、叶轮700、叶轮进水口701、过水间隙702、第一板体710、第二板体720、叶片730、第一弧面731、第二弧面732、倾斜面733、减震防护套800、防护套过孔810、第一螺栓910、第二螺栓920、密封圈930、垫片940。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或 两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面参考附图描述根据本申请实施例的叶轮700。
如图1-图9所示，根据本申请实施例的叶轮700包括第一板体710、第二板体720和多个叶片730。
第一板体710上设有叶轮进水口701。第二板体720与第一板体710间隔设置以在第一板体710和第二板体720之间形成与叶轮进水口701连通的过水间隙702。多个叶片730设在过水间隙702内且沿第一板体710的周向间隔设置。
其中，第一板体710与第二板体720之间的距离b与第一板体710的直径D2之比为0.02-0.15。
具体而言，水流从叶轮进水口701进入过水间隙702后，过水间隙702内的水在叶轮700的转动下通过叶片730的搅动向远离叶轮700中心的方向流动，从而实现对水流的驱动。
根据本申请实施例的叶轮700，通过第一板体710与第二板体720之间的距离b与第一板体710的直径D2之比为0.02-0.15。这样可以使叶轮700的结构更加合理，减小叶轮700的水流阻力，使叶轮700的转动更加稳定，降低叶轮700转动时的噪音和震动，降低水泵功耗。
因此，根据本申请实施例的叶轮700具有转动稳定、噪音小等优点。
下面参考附图描述根据本申请具体实施例的叶轮700。
在本申请的一些具体实施例中，如图1-图9所示，根据本申请实施例的叶轮700包括第一板体710、第二板体720和多个叶片730。
具体地，如图1、图3和图8所示，叶轮700还包括转子主体310，转子主体310上设有转子磁体320，转子主体310与第二板体720相连。
更为具体地，如图1、图3和图8所示，转子磁体320与转子主体310镶嵌注塑，转子磁体320套设在转子主体310外部。具体而言，转子主体310为圆柱形，且包括位于转子磁体320上方的部分和伸入转子磁体320内的部分，转子磁体320为套桶状套设在转子主体310外侧。
进一步地，如图1、图3和图8所示，转子主体310与第二板体720一体成型。
这样可以进一步简化水泵1的装配工艺，提高水泵1的装配效率和集成度。使叶轮700的结构更加合理，减小叶轮700的水流阻力，使叶轮700的转动更加稳定，降低叶轮 700转动时的噪音和震动，降低水泵功耗。
具体地，第一板体710与第二板体720之间的距离b与转子主体310和转子磁体320在上下方向上的总高度之比为0.05-0.15。这样可以使叶轮700的结构更加合理，减小叶轮700的水流阻力，降低叶轮700转动时的噪音和震动，降低水泵功耗。
有利地，如图8所示，叶片730一体形成在第一板体710或第二板体720上。这样可以简化叶轮700的装配工艺，减少叶轮700的零件数量，提高叶轮700的生产效率。
更为有利地，如图8所示，第二板体720上设有凹槽，叶片730的下端配合在所述凹槽内。这样可以利用所述凹槽对叶片730进行定位，便于提高叶片730的稳定性，便于第一板体710和第二板体720相连。
进一步地，叶片730与第二板体720通过激光焊接相连。这样可以保证第一板体710和第二板体720之间的连接强度，保证叶片730下端与第二板体720之间的密封性，保证叶轮700对水流的驱动效果。
可选地，如图8所示，第一板体710与第二板体720之间的距离b为1-5毫米，第一板体710的直径D2为30-50毫米。具体而言，第一板体710与第二板体720之间的距离b为3毫米，第一板体710的直径D2为40毫米。这样可以进一步合理规划叶轮700的尺寸。
图9示出了根据本申请一个具体示例的水泵1。如图9所示，叶轮进水口701的直径D1为8-22毫米。这样可以使叶轮进水口701的尺寸更加合理，保证进水水量。
具体地，如图9所示，与多个叶片730内端相切的假想圆的半径R3为8-12毫米。这样可以使叶片730的布置更加合理，保证叶轮700对水流的驱动效果。
更为具体地，如图9所示，叶片730为弧形且具有相对的第一弧面731和第二弧面732，第一弧面731位于叶片730的弧形凸出的一侧，第二弧面732位于叶片730的弧形凹陷的一侧，第一弧面731的半径R1为10-36毫米，第二弧面732的半径R2为5-25毫米。这样可以使叶片730的结构更加合理，降低叶片730的水流阻力，保证叶轮700对水流的驱动效果。
有利地，如图9所示，第一弧面731分别与叶片730的内端面和外端面相连，第二弧面732的内端与叶片730的内端面相连，第二弧面732的外端与叶片730的外端面通过倾斜面733相连，倾斜面733由第二弧面732向第一弧面731且向外倾斜延伸，倾斜面733与叶轮700径向之间的最小角度c1为0-25度。这样可以使叶片730的结构更加合理，降低叶片730的水流阻力，进一步保证叶片730对水流的驱动效果。
可选地，如图9所示，每个叶片730的第一弧面731的圆心与第一板体710圆心之间的假想连线以及该叶片730的第一弧面731的内端与第一板体710圆心之间的假想连线所呈的角度c2为40-95度，每个叶片730的第二弧面732的圆心与第一板体710圆心之间的假想连线以及该叶片730的第一弧面731的内端与第一板体710圆心之间的假想 连线所呈的角度c3为45-75度。这样可以使叶片730的布置更加合理，降低叶片730的水流阻力，保证叶轮700对水流的驱动效果。
下面描述根据本申请实施例的水泵1。根据本申请实施例的水泵1包括根据本申请上述实施例的叶轮700。
根据本申请实施例的水泵1，通过利用根据本申请上述实施例的叶轮700，具有功耗低、噪音小等优点。
如图1-图9所示，根据本申请实施例的水泵1包括屏蔽套100、定子200、转轴110和转子300。
屏蔽套100的端面上设有转子槽101和定子槽，所述定子槽在屏蔽套100的径向上位于转子槽101外。定子200配合在所述定子槽内。转轴110设在转子槽101内且与屏蔽套100一体成型。转子300可转动地配合在转子槽101内且套设在转轴110外。
根据本申请实施例的水泵1，通过将转轴110与屏蔽套100固定连接，转轴110与屏蔽套100固定不动，这样转子300套设在转轴110上，转子300相对转轴和屏蔽套进行转动，相比相关技术中转轴与泵盖相连的技术方案，可以省去将转轴110装配在屏蔽套100上的过程，不仅可以提高转轴110的装配效率，提高水泵1的生产效率，减少水泵1装配时的零件数量，提高水泵1的集成度，而且可以避免装配过程影响转轴110的位置精度，提高转轴110的稳定性，降低水泵1运行时产生的噪音，提高用户使用热水器时的舒适性。
并且，通过在屏蔽套100上设置转子槽101和所述定子槽，可以将定子200和转子300集中安装在屏蔽套100内，屏蔽套100在提供绝缘屏蔽效果的同时能够起到对定子200和转子300定位、支撑以及保护的作用，从而可以省去其他用于对定子200和转子300进行定位和保护的结构，进一步简化水泵1的结构，提高水泵1的集成度。
因此，根据本申请实施例的水泵1具有噪音小、集成度高等优点。
下面参考附图描述根据本申请具体实施例的水泵1。
在本申请的一些具体实施例中，如图1-图9所示，根据本申请实施例的水泵1包括屏蔽套100、定子200、转轴110和转子300。
可选地，转轴110与屏蔽套100一体成型或注塑为一体。这样可以便于转轴110与屏蔽套100构成一体结构，从而提高水泵1的稳定性和集成度。
具体地，转轴110为陶瓷轴。这样可以使转轴110具有良好的耐磨性，而且可以避免干扰转子300的转动。
更为具体地，如图1和图3所示，转子槽101形成在屏蔽套100的上端面(上下方向如图中的箭头所示且仅为了便于表述，并非对于水泵1实际设置方向的限定)，所述定子槽形成在屏蔽套100的下端面。这样可以便于定子200和转子300的安装，而且可以便于转子300和定子200与其他结构相连。
图1-图4示出了根据本申请一个具体示例的水泵1。如图1-图4所示，水泵1还包括散热基壳400和支架500，散热基壳400安装在屏蔽套100的下端面，支架500安装在散热基壳400下方，支架500适于安装在热水器上。这样可以利用支架500将水泵1安装在热水器上，利用散热基壳400对水泵1进行散热，保证水泵1的正常运行。
具体而言，水泵1还包括电路板420。电路板420与定子200电连接。散热基壳400内形成有散热腔401。电路板420设在散热腔401和定子槽中的至少一个内，定子200与电路板420间隔开以在定子200与电路板420之间形成散热间隙。这样可以利用散热基壳400对电路板420进行散热，避免定子200在运行时产生的热量以及电路板420上其他元件产生的热量影响电路板420的正常运行，从而保证电路板420在合适的温度内稳定运行。
具体而言，定子200下端面设有多个支脚210，多个支脚210沿定子200的周向间隔开，支脚210与电路板420卡接。这样可以便于电路板420的安装，而且可以便于控制电路板420与定子200之间的距离，便于电路板420靠近散热基壳400，以便于对电路板420进行散热。
屏蔽套100的下端面设有导向沿130，导向沿130适于伸入散热腔401。这样可以利用导向沿进行导向，便于将屏蔽套100与散热基壳400配合安装。
散热基壳400周壁的下部设有定位槽402，电路板420的一部分配合在定位槽402内。这样可以便于电路板420的安装，便于对电路板420进行定位。
散热基壳400周壁设有过线孔403，过线孔403与散热基壳400的上端面连通，电源线421通过过线孔403与电路板420电连接。这样可以便于电源线421与电路板420相连。
进一步地，如图1所示，散热腔401连通所述定子槽。这样可以便于电路板420和定子200的电连接，而且可以对定子200进行散热。如图1所示，电路板420邻近散热基壳400的底壁。这样可以提高对电路板420的散热效果。散热基壳400可以为铝基壳。这样可以保证散热基壳400的结构强度和散热效果。
具体地，如图1-图4所示，散热基壳400上设有安装孔410，屏蔽套100上设有屏蔽套过孔120，屏蔽套100与散热基壳400通过穿过屏蔽套过孔120配合在安装孔410内的第一螺栓910相连，支架500上设有支架过孔521，支架500和散热基壳400通过穿过支架过孔521配合在安装孔410内的第二螺栓920相连。这样可以便于水泵1各个结构的装配，而且第一螺栓910和第二螺栓920共用安装孔410，可以减少螺纹孔的加工数量，减少水泵1的加工工序，提高水泵1的生产效率，降低加工成本。
更为具体地，如图1-图4所示，支架500包括中心部510、多个第一凸耳520和多个第二凸耳530，多个第一凸耳520沿中心部510的周向间隔设置，多个第二凸耳530沿中心部510的周向间隔设置，支架过孔521形成在第一凸耳520上，第二凸耳530包 括减震段532和安装段533，减震段532从中心部510向下向外倾斜延伸，安装段533与减震段532相连，安装段533上设有装配过孔531，支架500适于通过穿过装配过孔531的第三螺栓安装在热水器上。这样可以便于支架500的设置，而且可以利用第二凸耳530起到减震缓冲作用，进一步减缓水泵1的震动，降低水泵1的噪音。
有利地，如图1-图4所示，支架500由同一板材加工而成。具体而言，支架500可以先裁切加工成平面板材，再对第二凸耳530进行折弯以形成减震段532和安装段533。这样可以便于支架500的加工和制造，减少水泵1的零件数量，提高水泵1集成度。
更为有利地，如图1-图3所示，支架500和散热基壳400之间夹持有减震防护套800。由于相关技术中支架500直接与散热基壳400相连，而减震防护套800设在支架500下方位于支架500与热水器的安装板之间，这样导致安装支架500打螺栓时减震防护套800容易挡住热水器上的螺纹孔，导致螺栓盲打，影响水泵1的装配效率。通过将减震防护套800设置在支架500与散热基壳400之间，可以保证同样的减震效果，而且在装配时可以先将支架500安装在热水器上，由于减震防护套800未设置在支架500下方，螺纹孔不会被减震防护套800挡住，可以避免螺栓盲打的情况发生，保证第三螺栓的安装效率，提高支架500的装配效率。
具体而言，减震防护套800上设有防护套过孔810。第二螺栓920穿过防护套过孔810。这样可以便于减震防护套800的安装和定位。
图1-图7示出了根据本申请一个具体示例的水泵1。如图1-图7所示，水泵1还包括泵盖600，泵盖600安装在屏蔽套100的上端面。这样可以利用泵盖600封盖屏蔽套100的上表面，封盖转子槽101。换言之，屏蔽套100、泵盖600和散热基壳400的外表面共同构成水泵1的外层结构。
具体而言，泵盖进水口620和泵盖出水口一体形成在所述泵盖上，泵盖进水口和泵盖出水口的中心轴线垂直设置。
具体地，如图1-图7所示，泵盖600上设有泵盖过孔610，第一螺栓910穿过泵盖过孔610和屏蔽套过孔120配合在安装孔410以连接泵盖600、屏蔽套100和散热基壳400。这样可以利用第一螺栓910实现泵盖600的安装和定位。
有利地，如图4所示，支架500在水平面的投影位于散热基壳400在水平面的投影的外接圆内且位于屏蔽套100在水平面的投影的外接圆内且位于泵盖600在水平面的投影的外接圆内。具体而言，中心部510在水平面的投影位于散热基壳400在水平面的投影内且位于屏蔽套100在水平面的投影内且位于泵盖600在水平面的投影内。这样可以控制支架500的尺寸，使支架500的外边沿轮廓不超过水泵1其他部分的外边沿，避免支架500干扰水泵1的安装，使水泵1适于更狭小的安装环境。
图4-图7示出了根据本申请一个具体实施例的水泵1。如图4-图7所示，泵盖600包括盖体640和出水接头630。
盖体640上设有泵盖进水口620。出水接头630与盖体640相连，出水接头630具有连接在盖体640的连接端和远离盖体640的自由端，所述自由端的端面与周面的连接处倒斜角以在所述自由端的端面与周面的连接处形成斜角面633，斜角面633与所述自由端的轴向之间的最小角度a1小于斜角面633与所述自由端径向之间的最小角度。这样可以便于管路与出水接头630相连，避免水泵1震动时出水接头630与管路频繁碰撞，避免出水接头630和管路发生损坏，而且可以减小出水接头630与管路碰撞产生的噪音，从而降低水泵1的工作噪音。
具体地，如图5所示，斜角面633与所述自由端轴向之间的最小角度a1为10-25毫米。这样可以进一步避免出水接头630与管路发生碰撞，进一步提高出水接头630的可靠性，降低噪音。
有利地，如图6所示，出水接头630内具有过水通道631，过水通道631至少包括渐扩段6311，渐扩段6311内径由连接端至自由端的方向逐渐增大。这样可以使过水通道631具有更好的水力性能，使出水接头630具有更好的抗压能力，提高水泵1的扬程性能。
更为具体地，如图6所示，过水通道631还包括平直段6312，平直段6312的内径均匀，平直段6312与渐扩段6311靠近所述自由端的一端相连。这样可以便于出水接头630与其他管路相连。
更为有利地，如图6所示，渐扩段6311和平直段6312的中心轴线重合。这样可以进一步保证过水通道631的出水顺畅，提高出水接头630的抗压能力。
进一步地，如图6所示。渐扩段6311和平直段6312的中心轴线与盖体640的径向垂直。这样可以进一步保证过水通道631的出水顺畅，提高出水接头630的抗压能力。
可选地，如图6所示，渐扩段6311的内周面与渐扩段6311的轴向之间的最小角度a2为2.5-10度。这样可以进一步保证过水通道631的水力性能，保证出水顺畅，提高抗压能力，提高水泵1的扬程效果。
图7示出了根据本申请一个具体示例的水泵1。如图7所示，盖体640包括顶壁601和周壁602。泵盖进水口620形成在顶壁601上。周壁602围绕顶壁601设置且向下延伸，顶壁601由周壁602向上向内倾斜延伸。这样可以使盖体640具有更好的抗压性能，提高泵盖600的可靠性。
径向加强筋642的数量和定子200的线圈数量相同或为定子200的线圈数量的整数倍。
有利地，如图7所示，顶壁601与水平面之间的最小角度a3为2-10度。这样可以进一步保证盖体640的抗压性能，进一步提高泵盖600的可靠性。
图4示出了根据本申请一个具体示例的水泵1。如图4所示，盖体640上设有沿盖体640周向延伸的周向加强筋641，盖体640上设有沿盖体640径向延伸的多个径向加强筋 642，多个径向加强筋642沿盖体640的周向间隔设置。这样可以利用周向加强筋641和径向加强筋642沿盖体640的受力方向对盖体640的结构强度进行补强，从而保证盖体640的结构强度和可靠性。
有利地，如图4所示，出水接头630上设有沿出水接头630周向延伸的环形加强筋632。这样可以利用环形加强筋632对出水接头630的结构强度进行补强，从而保证出水接头630的结构强度和可靠性。
更为有利地，如图4所示，环形加强筋632与多个径向加强筋642中的至少一个相连。这样可以使径向加强筋642与环形加强筋632连接成一体，便于受力相互传递，使泵盖600的受力更加均匀，进一步提高泵盖600的结构强度和可靠性。
具体地，如图1所示，周向加强筋641与泵盖600所在水泵的定子线圈在上下方向上相对。这样可以使周向加强筋641能够针对定子线圈的位置合理对泵盖600进行加强，使泵盖600的受力更加均匀合理，保证泵盖的结构强度。
可选地，泵盖600为玻璃纤维增强聚苯硫醚材料件。这样可以进一步保证泵盖600的结构强度和韧性，从而保证泵盖600的可靠性。
具体而言，如图1-图3所示，泵盖600与屏蔽套100之间、泵盖600与叶轮700之间以及出水接头630外设有密封圈930。这样可以保证水泵1的密封性。如图1和图3所示，转子300与屏蔽套100之间以及转子300与泵盖600之间设有垫片940。垫片940可以为陶瓷垫片。这样可以保证转子300顺畅转动，减少摩擦阻力，提高转子300转动稳定性。
下面描述根据本申请实施例的热水器。根据本申请实施例的热水器包括根据本申请上述实施例的水泵1。
根据本申请实施例的热水器，通过利用根据本申请上述实施例的水泵1，具有功耗低、噪音小等优点。
根据本申请实施例的热水器的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (18)

  1. 一种叶轮，其中，包括：
    第一板体，所述第一板体上设有叶轮进水口；
    第二板体，所述第二板体与所述第一板体间隔设置以在所述第一板体和所述第二板体之间形成与所述叶轮进水口连通的过水间隙；
    多个叶片，多个所述叶片设在所述过水间隙内且沿所述第一板体的周向间隔设置；
    转子主体，所述转子主体上设有转子磁体，所述转子主体与所述第二板体一体成型。
  2. 根据权利要求1所述的叶轮，其中，所述第一板体与所述第二板体之间的距离与所述第一板体的直径之比为0.02-0.15，
  3. 根据权利要求1所述的叶轮，其中，所述第一板体与所述第二板体之间的距离与所述转子主体和所述转子磁体在上下方向上的总高度之比为0.05-0.15。
  4. 根据权利要求1所述的叶轮，其中，所述转子磁体与所述转子主体镶嵌注塑，所述转子磁体套设在所述转子主体外部。。
  5. 根据权利要求4所述的叶轮，其中，所述转子主体与所述第二板体一体成型。
  6. 根据权利要求1所述的叶轮，其中，所述叶片一体形成在所述第一板体上或第二板体上。
  7. 根据权利要求6所述的叶轮，其中，所述第二板体上设有凹槽，所述叶片的下端配合在所述凹槽内。
  8. 根据权利要求1所述的叶轮，其中，所述第一板体与所述第二板体之间的距离为1-5毫米，所述第一板体的直径为30-50毫米。
  9. 根据权利要求1所述的叶轮，其中，所述叶轮进水口的直径为8-22毫米。
  10. 根据权利要求1所述的叶轮，其中，与多个所述叶片内端相切的假想圆的半径为8-12毫米。
  11. 根据权利要求1所述的叶轮，其中，所述叶片为弧形且具有相对的第一弧面和第二弧面，所述第一弧面位于所述叶片的弧形凸出的一侧，所述第二弧面位于所述叶片的弧形凹陷的一侧。
  12. 根据权利要求11所述的叶轮，其中，所述第一弧面的半径为10-36毫米。
  13. 根据权利要求11所述的叶轮，其中，所述第二弧面的半径为5-25毫米。
  14. 根据权利要求11所述的叶轮，其中，所述第一弧面分别与所述叶片的内端面和外端面相连，所述第二弧面的内端与所述叶片的内端面相连，所述第二弧面的外端与所述叶片的外端面通过倾斜面相连，所述倾斜面由所述第二弧面向所述第一弧面且向外倾斜延伸，所述倾斜面与所述叶轮径向之间的最小角度为0-25度。
  15. 根据权利要求11所述的叶轮，其中，每个所述叶片的所述第一弧面的圆心与所述第一板体圆心之间的假想连线以及该叶片的所述第一弧面的内端与所述第一板体圆 心之间的假想连线所呈的角度为40-95度。
  16. 根据权利要求11所述的叶轮，其中，每个所述叶片的所述第二弧面的圆心与所述第一板体圆心之间的假想连线以及该叶片的所述第一弧面的内端与所述第一板体圆心之间的假想连线所呈的角度为45-75度。
  17. 一种水泵，其中，包括根据权利要求1-16中任一项所述的叶轮。
  18. 一种热水器，其中，包括根据权利要求17所述的水泵。
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