CN202732377U - Centrifugal water pump directly driven by single-phase permanent-magnet synchronous motor - Google Patents
Centrifugal water pump directly driven by single-phase permanent-magnet synchronous motor Download PDFInfo
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- CN202732377U CN202732377U CN 201220452925 CN201220452925U CN202732377U CN 202732377 U CN202732377 U CN 202732377U CN 201220452925 CN201220452925 CN 201220452925 CN 201220452925 U CN201220452925 U CN 201220452925U CN 202732377 U CN202732377 U CN 202732377U
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- water pump
- synchronous motor
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- magnet synchronous
- phase permanent
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Abstract
A centrifugal water pump directly driven by a single-phase permanent-magnet synchronous motor comprises the single-phase permanent-magnet synchronous motor and a centrifugal water pump body directly driven by the single-phase permanent-magnet synchronous motor. The single-phase permanent-magnet synchronous motor comprises stators and permanent-magnet rotors with the same number of poles, the permanent-magnet rotors are inner rotors, and an impeller of the centrifugal water pump is coupled at one axial end of the permanent-magnet rotors. The centrifugal water pump directly driven by the single-phase permanent-magnet synchronous motor is characterized in that the number of blades of the impeller and the number of poles of the stators or the permanent-magnet rotors are relatively prime, the number of blades of the impeller is larger than that of poles of the stators or the permanent-magnet rotors, and the differential valve is no smaller than 2. The centrifugal water pump directly driven by the single-phase permanent-magnet synchronous motor can obviously reduce low-frequency noise of the water pump when the water pump operates on the device where the water pump is installed on.
Description
Technical field
The present invention relates to the direct drive Centrifugal water pump of a kind of single-phase permanent-magnet synchronous motor, relate in particular to cooperating of electric electromechanics magnetic structure and fluid mechanics in this water pump, in International Patent Classification (IPC), classification can belong to F04D13/06.
Background technique
The direct drive Centrifugal water pump of single-phase permanent-magnet synchronous motor is compared the remarkable energy-saving material-saving of the direct drive Centrifugal water pump of cover pole type asynchronous motor, but low-frequency noise increases to some extent when equipment operation that it is installed, prior art is improved for electric electromechanics magnetic structure or the fluid mechanics of this water pump separately usually, all is difficult to the noise reduction that reaches satisfied.
Summary of the invention
Technical problem to be solved by this invention is: propose the direct drive Centrifugal water pump of a kind of single-phase permanent-magnet synchronous motor, the low-frequency noise in the time of can obviously being reduced to the equipment operation that it installs.
The technological scheme of technical solution problem of the present invention is: the direct drive Centrifugal water pump of a kind of single-phase permanent-magnet synchronous motor comprises single-phase permanent-magnet synchronous motor and direct drive Centrifugal water pump thereof; Described single-phase permanent-magnet synchronous motor comprises stator and the p-m rotor of same number of poles; Described p-m rotor is internal rotor, and the impeller of described Centrifugal water pump is coupled in the axial end of described p-m rotor; It is characterized in that: the number of poles of the number of blade of described impeller and described stator or p-m rotor is relatively prime, and the number of blade of described impeller is no less than 2 greater than number of poles and this difference of described stator or p-m rotor.
This is designed with and is beneficial to main relevant with the number of poles of stator or the p-m rotor pulsating force of being avoided motor in the water pump and the two stack that is harmful in low-frequency range of the pulsating force of mainly being correlated with the number of blade that results from fluid machinery, this water pump is in intensity thereby the reduction of the vibration of power frequency times frequency and noise, and the low-frequency noise when equipment operation that it is installed is significantly improved.
One of modular design of this technological scheme is: described p-m rotor is 2 utmost points; The iron core of described stator is the U-iron core, and the yoke section of this iron core penetrates winding, and under shed is configured as two utmost points that insert for described p-m rotor; The number of blade of described impeller is odd number.For low power this water pump, the number of blade of impeller is preferably 5 or 7 or 9.
Two of the modular design of this technological scheme is: described p-m rotor is 4 utmost points; Described stator comprises circular iron core and the winding with 4 salient poles, and described winding is in series by 4 utmost points by 4 coils that respectively are placed in a salient pole; The number of blade of described impeller is 7 or 9 or 11.
Three of the modular design of this technological scheme is: described p-m rotor is 6 utmost points; Described stator comprises circular iron core and the winding with 6 salient poles, and described winding is in series by 6 utmost points by 6 coils that respectively are placed in a salient pole; The number of blade of described impeller is 11 or 13 or 17.
Description of drawings
Fig. 1 is the present invention's the 1st embodiment's water pump basic structure schematic diagram;
Fig. 2 is A-A sectional drawing among Fig. 1;
Fig. 3 is B-B sectional drawing among Fig. 1;
Fig. 4 is the motor basic structure schematic diagram of the present invention's the 2nd embodiment's water pump.
Embodiment
The structure of the present invention's the 1st embodiment's water pump comprises single-phase permanent-magnet synchronous motor and direct drive Centrifugal water pump thereof shown in Fig. 1～3.The stator of single-phase permanent-magnet synchronous motor mainly is comprised of downward opening U-iron core 4 and winding 5; Iron core 4 belows be configured as surround rotor 6 about two utmost points; Winding 5 forms by penetrating each 1 coil serial or parallel connection of iron core 4 yoke section left arms, right arm; Rotor 6 is p-m rotor, and radial symmetric magnetizes and is N, S two utmost points, inserts between left and right two utmost points of iron core 4, and is supported in bearing rotary with rotating shaft 10.The width of the air gap that the left utmost point of iron core 4 and rotor are 6 is stepped narrowing from top to bottom, the width of the right utmost point and 6 air gaps of rotor is stepped narrowing from bottom to top, therefore under the diagram free state, the axis of rotor 6 two utmost point magnetic fluxs is take the horizontal axis of stator two utmost points as reference, in the counterclockwise direction deflection one acute angle.This deflection structure makes single-phase permanent-magnet synchronous motor be realized simply self-starting, has also aggravated intrinsic power frequency frequency multiplication electric and magnetic oscillation and the noise of single-phase synchronous motor, needs suitably to improve.Rotor 6 by being anchored on rotating shaft 10 right-hand members eccentric mass 1 and be fixed in rubber damping post 3 coaxial transmission impellers 2 on impeller 2 wheel hubs in housing 7 interior rotations.Certainly, the wheel hub of impeller 2 also can directly be anchored on the end of impeller 2 rotating shafts 10 right-hand members in fairly simple ground, but startability and running noises are had certain influence.Impeller 2 namely drives current and sucks from water intake 9 in housing 7 interior rotations, discharges toward drain opening 8, and impeller 2 is designed to 5 blades.The needs that the number of blade of this embodiment's impeller also can be looked hydraulic performance are designed to 7 or 9.
The motor basic structure of the present invention's the 2nd embodiment's water pump as shown in Figure 4, this motor mainly comprises:
---stator 100, formed by the circular iron core 101 with 4 salient poles and winding 102, the width of the air gap that each utmost point of iron core and rotor are 200 in the counterclockwise direction gradual change narrows, and winding 102 is in series by 4 utmost points by 4 coils that respectively are placed in a salient pole;
---rotor 200 is 4 utmost point p-m rotors of N, S, N, S for radial symmetric magnetizes.
Impeller that this water pump is joined has 7 blades, and the needs that also can look hydraulic performance are designed to 9 or 11.
When needs during with the low-speed running noise reduction, this water pump can be designed as its motor and is comprised of the circular iron core with 6 salient poles and winding, the width of the air gap between each utmost point of iron core and rotor in the counterclockwise direction gradual change narrows, and winding is in series by 6 utmost points by 6 coils that respectively are placed in a salient pole; Rotor is that radial symmetric magnetizes and is 6 utmost point p-m rotors of N, S, N, S, N, S.At this moment, impeller that water pump is joined has 11 blades, and the needs that also can look hydraulic performance are designed to 13 or 17.
The embodiment of the invention is through experimental verification, and the low-frequency noise when equipment operation that it is installed is significantly improved.
Claims (4)
1. the direct drive Centrifugal water pump of single-phase permanent-magnet synchronous motor comprises single-phase permanent-magnet synchronous motor and direct drive Centrifugal water pump thereof; Described single-phase permanent-magnet synchronous motor comprises stator and the p-m rotor of same number of poles; Described p-m rotor is internal rotor, and the impeller of described Centrifugal water pump is coupled in the axial end of described p-m rotor; It is characterized in that: the number of poles of the number of blade of described impeller and described stator or p-m rotor is relatively prime, and the number of blade of described impeller is no less than 2 greater than number of poles and this difference of described stator or p-m rotor.
2. according to the direct drive Centrifugal water pump of the described single-phase permanent-magnet synchronous motor of claim 1, it is characterized in that: described p-m rotor is 2 utmost points; The iron core of described stator is the U-iron core, and the yoke section of this iron core penetrates winding, and under shed is configured as two utmost points that insert for described p-m rotor; The number of blade of described impeller is 5 or 7 or 9.
3. according to the direct drive Centrifugal water pump of the described single-phase permanent-magnet synchronous motor of claim 1, it is characterized in that: described p-m rotor is 4 utmost points; Described stator comprises circular iron core and the winding with 4 salient poles, and described winding is in series by 4 utmost points by 4 coils that respectively are placed in a salient pole; The number of blade of described impeller is 7 or 9 or 11.
4. according to the direct drive Centrifugal water pump of the described single-phase permanent-magnet synchronous motor of claim 1, it is characterized in that: described p-m rotor is 6 utmost points; Described stator comprises circular iron core and the winding with 6 salient poles, and described winding is in series by 6 utmost points by 6 coils that respectively are placed in a salient pole; The number of blade of described impeller is 11 or 13 or 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452925 CN202732377U (en) | 2012-09-06 | 2012-09-06 | Centrifugal water pump directly driven by single-phase permanent-magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452925 CN202732377U (en) | 2012-09-06 | 2012-09-06 | Centrifugal water pump directly driven by single-phase permanent-magnet synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN202732377U true CN202732377U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220452925 Withdrawn - After Issue CN202732377U (en) | 2012-09-06 | 2012-09-06 | Centrifugal water pump directly driven by single-phase permanent-magnet synchronous motor |
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| CN (1) | CN202732377U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840141A (en) * | 2012-09-06 | 2012-12-26 | 江门市地尔汉宇电器股份有限公司 | Centrifugal water pump directly transmitted by single-phase permanent-magnet synchronous motor |
| CN104518606A (en) * | 2014-12-20 | 2015-04-15 | 西安上普动力科技有限公司 | Permanent-magnet synchronous direct-drive water pump motor |
| CN105134617A (en) * | 2015-08-24 | 2015-12-09 | 江门市地尔汉宇电器股份有限公司 | Small-sized centrifugal pump driven by permanent-magnet synchronous motor |
-
2012
- 2012-09-06 CN CN 201220452925 patent/CN202732377U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840141A (en) * | 2012-09-06 | 2012-12-26 | 江门市地尔汉宇电器股份有限公司 | Centrifugal water pump directly transmitted by single-phase permanent-magnet synchronous motor |
| CN102840141B (en) * | 2012-09-06 | 2015-03-25 | 江门市地尔汉宇电器股份有限公司 | Centrifugal water pump directly transmitted by single-phase permanent-magnet synchronous motor |
| CN104518606A (en) * | 2014-12-20 | 2015-04-15 | 西安上普动力科技有限公司 | Permanent-magnet synchronous direct-drive water pump motor |
| CN105134617A (en) * | 2015-08-24 | 2015-12-09 | 江门市地尔汉宇电器股份有限公司 | Small-sized centrifugal pump driven by permanent-magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20150325 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20150325 |
|
| RGAV | Abandon patent right to avoid regrant |