CN104377849A - Compressor motor and compressor - Google Patents
Compressor motor and compressor Download PDFInfo
- Publication number
- CN104377849A CN104377849A CN201310354722.2A CN201310354722A CN104377849A CN 104377849 A CN104377849 A CN 104377849A CN 201310354722 A CN201310354722 A CN 201310354722A CN 104377849 A CN104377849 A CN 104377849A
- Authority
- CN
- China
- Prior art keywords
- hole
- electric motor
- pressing plate
- compressor electric
- compressor
- 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.)
- Granted
Links
- 238000004080 punching Methods 0.000 claims abstract description 40
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 239000011148 porous material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a compressor motor which comprises a stator, wherein the stator is formed by overlapping a plurality of stamped sheets, the compressor motor also comprises a stator tooth pressing plate used for tensioning the overlapped stamped sheets, a plurality of first through holes are uniformly arranged on the peripheral side of the stamped sheets, second through holes communicated with the first through holes are arranged on the stator tooth pressing plate, and the number of the second through holes is less than that of the first through holes. The invention also relates to a compressor. According to the compressor motor and the compressor, the first through hole is formed in the punching sheet of the stator, and the second through hole in the stator tooth pressing plate is communicated with the first through hole in the punching sheet of the stator, so that the friction loss generated when the motor rotor rotates at a high speed due to liquid carrying operation is effectively reduced, and the problem of high liquid carrying operation loss of the motor rotor in a high-power motor is solved.
Description
Technical field
The present invention relates to compressor field, particularly relate to a kind of be applied in refrigeration centrifugal compressor in permanent magnetic speed-adjusting compressor electric motor and compressor.
Background technology
The refrigeration centrifugal compressor motor had now is in running, in order to reduce the temperature of motor, as shown in Figure 1, refrigerant enters from motor leading inlet, after front end cavity rubs up, enter motor rear end through heat radiation air gap, then get back to compressor return air end through back outlet.Wherein, the direction of arrow in figure represents refrigerant and flows to, when compressor is not running at full capacity or under overload condition, the heating of motor is lower, the vaporific refrigerant entered condenses at motor front end cavity, collects, become liquid, but will enter in motor gas-gap along with liquid level raises liquid refrigerants, cause rotor to produce excessive mixing power in High Rotation Speed situation.Through the test of multiple stage advanced development, prove that this mode motor frictional dissipation increases, and loss is up to about 15kW, has a strong impact on unit eer.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of compressor electric motor and compressor, effectively solving the problem that in heavy-duty motor, rotor band liquid running wastage is large.For achieving the above object, technical scheme of the present invention is as follows:
A kind of compressor electric motor, comprise stator, described stator is formed by stacking by multiple punching, and described compressor electric motor also comprises the stator tooth pressing plate for straining the described punching laminated;
All sides of described punching are evenly provided with multiple first through hole, described stator tooth pressing plate are provided with the second through hole be connected with described first through hole, and the quantity of described second through hole is less than the quantity of described first through hole.
More preferably, described first through hole is arranged on the yoke portion of described punching.
More preferably, in multiple described first through hole, wherein described first through hole of part is connected with described second through hole, and the first through hole described in remaining is by the shutoff of described stator tooth pressing plate.
More preferably, the equal diameters of described first through hole and described second through hole.
More preferably, the quantity of described second through hole is 1/8 to 1/10 of described first number of openings.
More preferably, described second through hole is positioned at the below of described motor.
More preferably, the external diameter of described stator tooth pressing plate is identical with the external diameter of described punching.
More preferably, described punching is provided with punching groove.
More preferably, the internal diameter of described stator tooth pressing plate is greater than the bottom land place circle diameter of described punching groove.
More preferably, at described stator tooth pressing plate in the radial direction, the distance between the bottom land of described punching groove and the inner circle circumference of described stator tooth pressing plate is 4mm-5mm.
More preferably, the pore size of described first through hole is 3mm-6mm.
Also relate to a kind of compressor, comprise motor, described motor is the compressor electric motor of above-mentioned arbitrary technical scheme.
The invention has the beneficial effects as follows:
Compressor electric motor of the present invention and compressor, the second through hole on stator tooth pressing plate is connected with the first through hole in the punching of stator, and the quantity of the second through hole is less than the quantity of the first through hole, in multiple first through hole, wherein part first through hole is connected with the second through hole, remaining first through hole, by the shutoff of stator tooth pressing plate, can effectively reduce rotor because of the frictional dissipation produced when band liquid operates in High Rotation Speed, solve the problem that in heavy-duty motor, rotor band liquid running wastage is large.
Accompanying drawing explanation
Fig. 1 is existing compressor electric motor refrigerant circulation schematic diagram in running;
Fig. 2 is the cross-sectional schematic of compressor electric motor one embodiment of the present invention;
Fig. 3 is for looking partial schematic sectional view in the right side of compressor electric motor shown in Fig. 2;
The stator punching schematic diagram that Fig. 4 is compressor electric motor shown in Fig. 2;
The stator tooth pressing plate schematic diagram that Fig. 5 is compressor electric motor shown in Fig. 2;
Wherein,
1 rotating shaft; 2 first end caps; 3 rotors; 4 stators; 5 binding posts; 6 second end caps;
7 stator leads; 8 first through holes; 9 punching grooves; 10 second through holes.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, compressor electric motor of the present invention and compressor are further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to Fig. 2 to Fig. 5, compressor electric motor one embodiment of the present invention comprises stator 4, rotor 3 and rotating shaft 1, stator 4 side arranges the first end cap 2, opposite side arranges the second end cap 6, stator 4 is provided with binding post 5, stator lead 7 is connected on binding post 5, and the threephase stator lead-in wire 7 of compressor electric motor is respectively U, V, W, and compressor electric motor turns to as shown in the direction of arrow in Fig. 3.
Stator 4 is formed by stacking by multiple punching, punching is provided with punching groove 9, and all sides of punching are evenly provided with multiple first through hole 8, and preferably, the first through hole 8 is arranged on the yoke portion of punching.Multiple first through hole 8 is evenly set in all sides of punching, ensure that the magnetic field balance of motor, make motor more steady in operation process.
Compressor electric motor also comprises the stator tooth pressing plate for straining the described punching laminated, stator tooth pressing plate is provided with second through hole 10 of to be connected with the first through hole 8 (matching), second through hole 10 is positioned at the below of compressor electric motor, and the quantity of the second through hole 10 is less than the quantity of the first through hole 8.Preferably, the quantity of the second through hole 10 is the 1/8 to 1/10, the first through hole 8 of the first through hole 8 quantity and the equal diameters of the second through hole 10, in multiple first through hole 8, wherein part first through hole 8 is connected with the second through hole 10, and remaining first through hole 8 is by the shutoff of described stator tooth pressing plate.Such as, the quantity of the first through hole 8 is 24-30, and the quantity of the second through hole 10 is 3, and 3 the second through holes 10 are connected with three in multiple first through hole 8, and remaining first through hole 8 is by the shutoff of stator tooth pressing plate.
The pore size of the first through hole 8 is 3mm-6mm, because acting as of the first through hole 8 makes the refrigerant by retaining in motor outwards flow out, avoid compressor electric motor band liquid to run and cause motor abrasion larger, if the first through hole 8 is opened too much, refrigerant then can be caused all to go out to flow out from this through hole, and without the radiating flow passage of stator 4 weeks sides, thus cause motor to dispel the heat, easily make motor temperature too high so that motor demagnetization, if the first through hole 8 is opened too small, then can not meet the amount that refrigerant flows out, cannot technical solution problem effectively.
The external diameter of stator tooth pressing plate is identical with the external diameter of punching.Preferably, the internal diameter of stator tooth pressing plate is greater than the bottom land place circle diameter of punching groove 9, at described stator tooth pressing plate in the radial direction, distance between the bottom land of punching groove 9 and the inner circle circumference of described stator tooth pressing plate is 4mm-5mm, namely φ 2 and the difference range of φ 1 be 8mm-10mm(wherein φ 2 be the interior circular diameter of stator tooth pressing plate, φ 1 is the bottom land place circle diameter of punching groove 9).Because from the notch of punching groove 9 out, if the internal diameter of stator tooth pressing plate is bigger than normal, easily damage enamelled wire, internal diameter is less than normal for enamelled wire, the effect that tooth support compresses punching can not be played.
Compressor electric motor in above embodiment, punching is evenly arranged multiple first through hole 8, guarantee motor-field balances, the second through hole 10 on stator tooth pressing plate matches with the first through hole 8 in the punching of stator, stator tooth pressing plate is adopted to carry out shutoff to part first through hole 8 in punching, prevent the hidden danger such as the uneven or high temperature of electric motor temperature field, avoid rotor demagnetization, solve the problem that in heavy-duty motor, rotor band liquid running wastage is large.
Above-mentioned compressor motor application on the compressor, because compressor is prior art except compressor electric motor, repeats herein no longer one by one.
Compressor electric motor in above-described embodiment and compressor, the second through hole on stator tooth pressing plate is connected with the first through hole in the punching of stator, and the quantity of the second through hole is less than the quantity of the first through hole, in multiple first through hole, wherein part first through hole is connected with the second through hole, remaining first through hole is by the shutoff of stator tooth pressing plate, rotor can be effectively reduced because of the frictional dissipation produced when band liquid operates in High Rotation Speed, solve the problem that in heavy-duty motor, rotor band liquid running wastage is large; Solve the potential problems such as the uneven or high temperature of electric motor temperature field.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (12)
1. a compressor electric motor, comprises stator, and described stator is formed by stacking by multiple punching, it is characterized in that:
Described compressor electric motor also comprises the stator tooth pressing plate for straining the described punching laminated;
All sides of described punching are evenly provided with multiple first through hole, described stator tooth pressing plate are provided with the second through hole be connected with described first through hole, and the quantity of described second through hole is less than the quantity of described first through hole.
2. compressor electric motor according to claim 1, is characterized in that:
Described first through hole is arranged on the yoke portion of described punching.
3. compressor electric motor according to claim 1, is characterized in that:
In multiple described first through hole, wherein described first through hole of part is connected with described second through hole, and the first through hole described in remaining is by the shutoff of described stator tooth pressing plate.
4. compressor electric motor according to claim 1, is characterized in that:
The equal diameters of described first through hole and described second through hole.
5. compressor electric motor according to claim 1, is characterized in that:
The quantity of described second through hole is 1/8 to 1/10 of described first number of openings.
6. compressor electric motor according to claim 1, is characterized in that:
Described second through hole is positioned at the below of described motor.
7. compressor electric motor according to claim 1, is characterized in that:
The external diameter of described stator tooth pressing plate is identical with the external diameter of described punching.
8. the compressor electric motor according to any one of claim 1 to 7, is characterized in that:
Described punching is provided with punching groove.
9. compressor electric motor according to claim 8, is characterized in that:
The internal diameter of described stator tooth pressing plate is greater than the bottom land place circle diameter of described punching groove.
10. compressor electric motor according to claim 9, is characterized in that:
At described stator tooth pressing plate in the radial direction, the distance between the bottom land of described punching groove and the inner circle circumference of described stator tooth pressing plate is 4mm-5mm.
11. compressor electric motors according to claim 1, is characterized in that:
The pore size of described first through hole is 3mm-6mm.
12. 1 kinds of compressors, comprise motor, it is characterized in that:
Described motor is the compressor electric motor described in any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310354722.2A CN104377849B (en) | 2013-08-14 | 2013-08-14 | compressor motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310354722.2A CN104377849B (en) | 2013-08-14 | 2013-08-14 | compressor motor and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104377849A true CN104377849A (en) | 2015-02-25 |
| CN104377849B CN104377849B (en) | 2017-03-15 |
Family
ID=52556574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310354722.2A Active CN104377849B (en) | 2013-08-14 | 2013-08-14 | compressor motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104377849B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003061273A (en) * | 2001-08-16 | 2003-02-28 | Mitsubishi Electric Corp | Stacked iron core and its manufacturing method |
| JP4539234B2 (en) * | 2004-08-26 | 2010-09-08 | セイコーインスツル株式会社 | Stator core manufacturing method |
| JP2006115581A (en) * | 2004-10-13 | 2006-04-27 | Matsushita Electric Ind Co Ltd | Closed electric compressor |
| JP2006296010A (en) * | 2005-04-06 | 2006-10-26 | Matsushita Electric Ind Co Ltd | Closed compressor |
| CN2888726Y (en) * | 2006-02-24 | 2007-04-11 | 哈尔滨工业大学 | PM motor with plug-in internal stator |
| CN202550702U (en) * | 2012-03-29 | 2012-11-21 | 珠海格力电器股份有限公司 | Stator punching sheet and stator core for motor |
| CN203406691U (en) * | 2013-08-14 | 2014-01-22 | 珠海格力电器股份有限公司 | Compressor motor and compressor |
-
2013
- 2013-08-14 CN CN201310354722.2A patent/CN104377849B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104377849B (en) | 2017-03-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |