CN107044425B - Electric water pump - Google Patents
Electric water pump Download PDFInfo
- Publication number
- CN107044425B CN107044425B CN201611257660.3A CN201611257660A CN107044425B CN 107044425 B CN107044425 B CN 107044425B CN 201611257660 A CN201611257660 A CN 201611257660A CN 107044425 B CN107044425 B CN 107044425B
- Authority
- CN
- China
- Prior art keywords
- water
- rotor
- cavity
- runner
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 239000000498 cooling water Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
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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
- 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
- F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an electric water pump, which comprises a water pump shell, and an impeller rotor and a motor shell which are arranged in the water pump shell, wherein a water inlet and a water outlet are formed in the water pump shell, a water running cavity which is communicated with the water inlet and the water outlet is formed between the water pump shell and the impeller rotor, a rotor shaft is arranged on the motor shell, the impeller rotor is rotationally connected to the rotor shaft, a water sealing cavity is formed between the impeller rotor and the motor shell, and a runner which is communicated with the water running cavity and the water sealing cavity is arranged on the impeller rotor and/or the rotor shaft. The invention adopts the runner to communicate the dead water cavity and the active water cavity in the original electric water pump, and the water in the active water cavity flows into the dead water cavity through the runner under the action of self-suction force, so that the dead water in the dead water cavity is discharged from the tail end of the impeller rotor by displacement, thereby forming circulation and avoiding the formation of deposited scale in the dead water area.
Description
Technical Field
The invention relates to an electric water pump.
Background
As shown in fig. 1, the existing electric water pump comprises a water pump shell 1, an impeller rotor 2 and a motor shell 3, wherein the water pump shell 1 and the motor shell 3 in the electric water pump are filled with cooling water, the cooling water between the water pump shell 1 and the impeller rotor 2 flows from a water inlet 4 to a water outlet 5 of the water pump under the self-suction force formed by rotation of the impeller rotor 2, the cooling water entering between the impeller rotor 2 and the motor shell 3 cannot form circulation flow, a dead water area is formed, the cooling water cannot flow for a long time, scale is formed on the impeller rotor 2 and the motor shell 3, and the working efficiency of the electric water pump is affected.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in order to overcome the defects in the prior art, the invention provides an electric water pump, which is characterized in that the structure of an impeller rotor is improved to enable cooling water in a dead water area to be circulated, so that scale is prevented from being formed on the impeller rotor and a motor shell.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an electric water pump, includes the water pump shell and sets up impeller rotor and the motor casing in the water pump shell, be equipped with water inlet and delivery port on the water pump shell, form the intercommunication between water pump shell and the impeller rotor the running water chamber of water inlet and delivery port, be equipped with the rotor shaft on the motor casing, the impeller rotor rotates to be connected on the rotor shaft, form the dead water chamber between impeller rotor and the motor casing, be equipped with the intercommunication on impeller rotor and/or the rotor shaft running water chamber and the runner of dead water chamber. The movable water cavity is communicated with the dead water cavity by the flow channel, so that the cooling water in the dead water cavity is automatically circulated under the action of self-suction force, and a dead water area is avoided, thereby solving the problem of scale formation on the impeller rotor and the motor shell.
Specifically, the runner includes the intercommunication that sets up on the rotor shaft running water chamber and the first runner hole and the second runner hole of dead water chamber, first runner hole is followed the axial setting of rotor shaft is in the blind hole of rotor shaft tip, the second runner hole is followed the radial setting of rotor shaft, just the second runner hole with the bottom intercommunication of blind hole. Because the water quantity is the largest at the position where the water sucked under the action of the self-suction force is close to the rotor shaft, the flow channel is only arranged on the rotor shaft, and the first flow channel hole and the second flow channel Kong Jiangsi water cavity which are communicated with the inside of the rotor shaft are formed at the root part of the rotor shaft and are communicated with the running water cavity by arranging the rotor shaft as a hollow shaft, so that the cooling water in the dead water cavity is automatically circulated.
Further, in order to make the water in the dead water cavity fully flow, the second runner holes are a plurality of, and a plurality of second runner holes are arranged into one or more layers along the radial direction. The quantity of the cooling water flowing into the dead water cavity is increased by increasing the quantity of the second flow passage holes, so that the flowing speed and flow rate are increased, and scaling is effectively avoided.
Specifically, the runner is a third runner hole arranged on the impeller rotor, and two ends of the third runner hole are communicated with the running water cavity and the dead water cavity. The flow channel is only arranged on the impeller rotor, the third flow channel hole is arranged at the central part of the impeller rotor close to the rotor shaft and is uniformly distributed along the circumferential direction of the impeller rotor, and the water sucked in by the self-suction effect is the largest in water quantity at the position close to the rotor shaft, so that the position of the third flow channel hole is close to the rotor shaft as much as possible to ensure that the suction force of the water flow passing through the third flow channel hole is the largest as much as possible in order to achieve better effect.
Specifically, the runner is including setting up first runner hole and the second runner hole on the rotor shaft and setting up the third runner hole on impeller rotor, first runner hole is for following the axial setting of rotor shaft is in the blind hole of rotor shaft tip, the second runner hole is followed the radial setting of rotor shaft, just the second runner hole with the bottom intercommunication of blind hole, third runner hole one end with second runner hole intercommunication, the other end extends to in the dead water intracavity. The runner sets up simultaneously through rotor shaft and impeller rotor, and the water in the living water cavity gets into through the first runner hole in rotor shaft center and flows to dead water intracavity through second runner hole and third runner hole again in proper order, makes the water in the dead water intracavity receive the displacement to be discharged by impeller rotor's tail end to form the circulation, avoid forming dead water district deposit incrustation scale.
Further, the impeller further comprises a plurality of drain holes arranged on the impeller rotor, the drain holes are communicated with the inner side and the outer side of the impeller rotor, and the drain holes are distributed on one end, far away from the rotor shaft, of the impeller rotor. For timely and effective drainage, a plurality of radial drainage holes are formed in the tail of the impeller rotor, so that water entering the dead water cavity through the flow channel can be timely discharged, and the circulation effect is improved.
The beneficial effects of the invention are as follows: according to the electric water pump provided by the invention, the runner is adopted to communicate the dead water cavity with the active water cavity in the original electric water pump, and water in the active water cavity flows into the dead water cavity through the runner under the action of self-suction force, so that the dead water in the dead water cavity is discharged from the tail end of the impeller rotor by being squeezed, thereby forming circulation, and avoiding the formation of deposited scale in a dead water area.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a conventional electric water pump;
FIG. 2 is a schematic structural view of the first embodiment;
FIG. 3 is a schematic diagram of the structure of the second embodiment;
fig. 4 is a schematic structural view of a third embodiment;
fig. 5 is a schematic structural view of a fourth embodiment;
fig. 6 is a schematic structural view of a fifth embodiment;
fig. 7 is a schematic structural diagram of a sixth embodiment.
In the figure: 1. the water pump comprises a water pump shell, 2, an impeller rotor, 3, a motor shell, 4, a water inlet, 5, a water outlet, 6, a water cavity, 7, a water cavity, 8, a rotor shaft, 9, a first flow passage hole, 10, a second flow passage hole, 11, a third flow passage hole, 13 and a water drain hole.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the invention only by way of illustration, and therefore it shows only the constitution related to the invention.
Arrows in fig. 1-7 indicate the direction of water flow.
Embodiment one:
as shown in fig. 2, the electric water pump of the invention comprises a water pump shell 1, and an impeller rotor 2 and a motor shell 3 which are arranged in the water pump shell 1, wherein a water inlet 4 and a water outlet 5 are arranged on the water pump shell 1, a water running cavity 6 which is communicated with the water inlet 4 and the water outlet 5 is formed between the water pump shell 1 and the impeller rotor 2, a rotor shaft 8 is arranged on the motor shell 3, the impeller rotor 2 is rotationally connected on the rotor shaft 8, a dead water cavity 7 is formed between the impeller rotor 2 and the motor shell 3, a runner which is communicated with the water running cavity 6 and the dead water cavity 7 is arranged on the rotor shaft 8, the runner comprises a first runner hole 9 and a second runner hole 10 which are arranged on the rotor shaft 8 and are communicated with the water running cavity 6 and the dead water cavity 7, the first runner hole 9 is a blind hole which is arranged at the end part of the rotor shaft 8 along the axial direction of the rotor shaft 8, the second runner hole 10 is arranged along the radial direction of the rotor shaft 8, and the second runner hole 10 is communicated with the bottom of the blind hole. The number of the second runner holes 10 is plural, and the second runner holes 10 are arranged in one or more layers along the radial direction.
Embodiment two:
as shown in fig. 3, the difference between the present embodiment and the first embodiment is that the arrangement of the drain holes 13 is added, and a plurality of radial drain holes 13 are arranged at the tail of the impeller rotor 2 for timely and effective drainage, so that water entering the dead water cavity 7 through the flow passage can be timely drained, and the circulation effect is improved. The drain holes 13 are communicated with the inner side and the outer side of the impeller rotor 2, and the drain holes 13 are distributed on one end, far away from the rotor shaft 8, of the impeller rotor 2.
Embodiment III:
as shown in fig. 4, the electric water pump of the invention comprises a water pump shell 1, and an impeller rotor 2 and a motor shell 3 which are arranged in the water pump shell 1, wherein a water inlet 4 and a water outlet 5 are arranged on the water pump shell 1, a water running cavity 6 which is communicated with the water inlet 4 and the water outlet 5 is formed between the water pump shell 1 and the impeller rotor 2, a rotor shaft 8 is arranged on the motor shell 3, the impeller rotor 2 is rotationally connected on the rotor shaft 8, a dead water cavity 7 is formed between the impeller rotor 2 and the motor shell 3, a runner which is communicated with the water running cavity 6 and the dead water cavity 7 is arranged on the impeller rotor 2, a third runner hole 11 which is arranged on the impeller rotor 2 is arranged at two ends of the third runner hole 11, and the two ends of the third runner hole 11 are communicated with the water running cavity 6 and the dead water cavity 7. The flow channel is only arranged on the impeller rotor 2, the third flow channel hole 11 is arranged at the central part of the impeller rotor 2 close to the rotor shaft 8, and is uniformly distributed along the circumferential direction of the impeller rotor 2, and the water sucked in by the self-suction effect is the largest at the position close to the rotor shaft 8, so that the position of the third flow channel hole 11 is close to the rotor shaft 8 as much as possible to ensure that the suction force of the water flow passing through the third flow channel hole 11 is the largest as much as possible in order to achieve better effect.
Embodiment four:
as shown in fig. 5, the difference between the present embodiment and the third embodiment is that the arrangement of the drain holes 13 is added, and a plurality of radial drain holes 13 are arranged at the tail of the impeller rotor 2 for timely and effective drainage, so that water entering the dead water cavity 7 through the flow passage can be timely drained, and the circulation effect is improved. The drain holes 13 are communicated with the inner side and the outer side of the impeller rotor 2, and the drain holes 13 are distributed on one end, far away from the rotor shaft 8, of the impeller rotor 2.
Fifth embodiment:
as shown in fig. 6, the electric water pump of the invention comprises a water pump shell 1, an impeller rotor 2 and a motor shell 3 which are arranged in the water pump shell 1, wherein a water inlet 4 and a water outlet 5 are arranged on the water pump shell 1, a water running cavity 6 which is communicated with the water inlet 4 and the water outlet 5 is formed between the water pump shell 1 and the impeller rotor 2, a rotor shaft 8 is arranged on the motor shell 3, the impeller rotor 2 is rotationally connected to the rotor shaft 8, a dead water cavity 7 is formed between the impeller rotor 2 and the motor shell 3, a runner which is communicated with the water running cavity 6 and the dead water cavity 7 is arranged on the impeller rotor 2 and the rotor shaft 8, the runner comprises a first runner hole 9 and a second runner hole 10 which are arranged on the rotor shaft 8, and a third runner hole 11 which is arranged on the impeller rotor 2, the first runner hole 9 is a blind hole which is axially arranged at the end part of the rotor shaft 8, the second runner hole 10 is arranged along the radial direction of the rotor shaft 8, the second runner hole 10 is communicated with the bottom of the blind hole, the third runner hole 11 is communicated with one end of the dead water cavity 7, and the other end of the third runner hole 10 extends to one end of the dead water cavity 7. The runner sets up simultaneously through rotor shaft 8 and impeller rotor 2, and the water in the running water chamber 6 gets into through the first runner hole 9 in rotor shaft 8 center and flows to dead water intracavity 7 through second runner hole 10 and third runner hole 11 again in proper order, makes the water in the dead water chamber 7 receive the displacement to be discharged by impeller rotor 2's tail end to form the circulation, avoid forming dead water district deposit incrustation scale. The number of the second runner holes 10 is plural, and the second runner holes 10 are arranged in one or more layers along the radial direction.
Example six:
as shown in fig. 7, the difference between the present embodiment and the fifth embodiment is that the arrangement of the drain holes 13 is added, and a plurality of radial drain holes 13 are provided at the tail of the impeller rotor 2 to enable water entering the dead water chamber 7 through the flow passage to be drained in time, thereby improving the circulation effect. The drain holes 13 are communicated with the inner side and the outer side of the impeller rotor 2, and the drain holes 13 are distributed on one end, far away from the rotor shaft 8, of the impeller rotor 2.
The technical scheme of the invention also comprises a structure formed by combining any of the first to sixth embodiments, and the description is omitted herein.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. An electric water pump, characterized in that: the water pump comprises a water pump shell (1), and an impeller rotor (2) and a motor shell (3) which are arranged in the water pump shell (1), wherein a water inlet (4) and a water outlet (5) are formed in the water pump shell (1), a water running cavity (6) which is communicated with the water inlet (4) and the water outlet (5) is formed between the water pump shell (1) and the impeller rotor (2), a rotor shaft (8) is arranged on the motor shell (3), the impeller rotor (2) is rotationally connected onto the rotor shaft (8), a dead water cavity (7) is formed between the impeller rotor (2) and the motor shell (3), and a runner which is communicated with the water running cavity (6) and the dead water cavity (7) is formed in the impeller rotor (2) and/or the rotor shaft (8); the inlet of the runner is positioned on the rotor shaft (8) or at a position of the impeller rotor (2) close to the rotor shaft (8), and the outlet is positioned in a gap between the outer peripheral wall of the impeller rotor (2) and the inner peripheral wall of the water pump shell (1); wherein,,
the runner comprises a first runner hole (9) and a second runner hole (10) which are formed in the rotor shaft (8) and a third runner hole (11) which is formed in the impeller rotor (2), the first runner hole (9) is a blind hole which is axially formed in the end portion of the rotor shaft (8) along the rotor shaft (8), the second runner hole (10) is formed in the radial direction of the rotor shaft (8), the second runner hole (10) is communicated with the bottom of the blind hole, one end of the third runner hole (11) is communicated with the second runner hole (10), and the other end of the third runner hole extends into the dead water cavity (7).
2. The electric water pump of claim 1, wherein: the impeller comprises an impeller rotor (2), and is characterized by further comprising a plurality of drain holes (13) arranged on the impeller rotor (2), wherein the drain holes (13) are communicated with the inner side and the outer side of the impeller rotor (2), and the drain holes (13) are distributed on one end, far away from a rotor shaft (8), of the impeller rotor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257660.3A CN107044425B (en) | 2016-12-30 | 2016-12-30 | Electric water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257660.3A CN107044425B (en) | 2016-12-30 | 2016-12-30 | Electric water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107044425A CN107044425A (en) | 2017-08-15 |
| CN107044425B true CN107044425B (en) | 2023-08-08 |
Family
ID=59543865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611257660.3A Active CN107044425B (en) | 2016-12-30 | 2016-12-30 | Electric water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044425B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007103B (en) * | 2021-03-08 | 2022-09-30 | 广州安捷制造有限公司 | Water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3273506A (en) * | 1963-08-30 | 1966-09-20 | Plessey Uk Ltd | Motor-driven pump units |
| JPH0612790U (en) * | 1992-07-22 | 1994-02-18 | 株式会社川本製作所 | Cooling water circulation type pump |
| CN1144887A (en) * | 1996-05-17 | 1997-03-12 | 杨雪峰 | Electric booster pump and pump group connector |
| JP2007332839A (en) * | 2006-06-14 | 2007-12-27 | Aisan Ind Co Ltd | Fluid pump |
| CN101509405A (en) * | 2008-02-14 | 2009-08-19 | 本田技研工业株式会社 | Valve structure of internal combustion engine |
| JP2010255567A (en) * | 2009-04-27 | 2010-11-11 | Toyota Motor Corp | Water pump |
-
2016
- 2016-12-30 CN CN201611257660.3A patent/CN107044425B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3273506A (en) * | 1963-08-30 | 1966-09-20 | Plessey Uk Ltd | Motor-driven pump units |
| JPH0612790U (en) * | 1992-07-22 | 1994-02-18 | 株式会社川本製作所 | Cooling water circulation type pump |
| CN1144887A (en) * | 1996-05-17 | 1997-03-12 | 杨雪峰 | Electric booster pump and pump group connector |
| JP2007332839A (en) * | 2006-06-14 | 2007-12-27 | Aisan Ind Co Ltd | Fluid pump |
| CN101509405A (en) * | 2008-02-14 | 2009-08-19 | 本田技研工业株式会社 | Valve structure of internal combustion engine |
| JP2010255567A (en) * | 2009-04-27 | 2010-11-11 | Toyota Motor Corp | Water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107044425A (en) | 2017-08-15 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181113 Address after: 213000 No. 15 Tenglong Road, Jiangsu Wujin Economic Development Zone, Changzhou City, Jiangsu Province Applicant after: Changzhou Tenglong automobile energy saving Technology Co.,Ltd. Address before: 213014 No. 178 Yulong South Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province (No. 903, New Energy Automobile Research Institute Building, 1000 People Plan, Changzhou) Applicant before: JIANGSU WANFU NEW ENERGY CO.,LTD. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |