CN109681427A - Sealed electrical compressor - Google Patents
Sealed electrical compressor Download PDFInfo
- Publication number
- CN109681427A CN109681427A CN201711387740.5A CN201711387740A CN109681427A CN 109681427 A CN109681427 A CN 109681427A CN 201711387740 A CN201711387740 A CN 201711387740A CN 109681427 A CN109681427 A CN 109681427A
- Authority
- CN
- China
- Prior art keywords
- rotor
- counterweight
- end plate
- mechanical part
- sealed electrical
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention provides a kind of sealed electrical compressor, can reduce the magnetic flux bleed-through of permanent magnet, realizes the raising of efficiency.Sealed electrical compressor includes the compression mechanical part (102) compressed to refrigerant, drive the motor (103) of compression mechanical part (102), accommodate the closed container (101) of compression mechanical part (102) and motor (103), motor (103) includes stator (201), rotor (202), permanent magnet on rotor (202) is set, the counterweight (203) being fixed on rotor (202), the end plate (210) being arranged between counterweight (203) and rotor (202), end plate (210) is made of nonmagnetic material, simultaneously, the plate thickness of end plate (210) is 5mm or more.
Description
Technical field
The present invention relates to sealed electrical compressors.
Background technique
Sealed electrical compressor compresses the compression mechanical part of refrigerant by motor drive.Motor by stator and
Rotor is constituted.In the axial end portion of rotor, counterweight is installed.Counterweight is in order to as produced by compression mechanical part
Spin balancing be corrected and be arranged.As counterweight material, the high brass material of density, iron material, stainless is used
Steel material etc..
In addition, being formed with insertion hole on rotor, it is inserted into permanent magnet.It is equipped in the axial end portion of rotor for preventing permanent magnetism
The end plate that body is extracted from insertion hole.End plate blocking insertion hole.As the material of end plate, magnetic flux bleed-through, is used in order to prevent
Brass material, Zinc material, stainless steel material etc..
As such prior art, technology documented by such as patent document 1 is proposed.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2000-116080 bulletin
Summary of the invention
Problems to be solved by the invention
In patent document 1, it is inserted into the magnetic flux bleed-through of the permanent magnet of rotor in order to prevent, uses brass material, zinc material
The nonmagnetic materials material such as material, stainless steel material.
But the thickness due to not accounting for end plate, fail sufficiently to inhibit magnetic flux bleed-through.
Especially, for example use in the case where the iron material for comparing low price that the following topics exist as counterweight, it may be assumed that by
It is magnetic substance in iron material, the magnetic flux of permanent magnet is flow in counterweight by end plate.In this way, passing through 1 institute of patent document
The technology of record, it is difficult to reduce magnetic flux bleed-through.
It is an object of the invention to solve the above subject, provide it is a kind of can be realized reduce permanent magnet magnetic flux bleed-through,
The sealed electrical compressor improved efficiency.
The method to solve the problem
To achieve the goals above, sealed electrical compressor of the invention is characterised by comprising: being carried out to refrigerant
The compression mechanical part of compression, the driving compression mechanical part motor and accommodate the compression mechanical part and the motor
Closed container, the motor include stator, rotor, the permanent magnet being arranged on the rotor, are fixed on the rotor
Counterweight and the end plate being set between the counterweight and the rotor, the end plate are made of nonmagnetic material, together
When, the plate thickness of the end plate is 5mm or more.
Invention effect
In accordance with the invention it is possible to the hermetic type for providing a kind of magnetic flux bleed-through of achievable reduction permanent magnet, improving efficiency
Motor compressor.
Detailed description of the invention
Fig. 1 is the longitudinal section of sealed electrical compressor according to an embodiment of the invention.
Fig. 2 is the longitudinal section of rotor 202 according to an embodiment of the invention.
Fig. 3 is the A-A sectional view in Fig. 2.
Fig. 4 is the relationship indicated between end plate plate thickness (mm) according to an embodiment of the invention and magnetic flux ratio (%)
Figure.
Description of symbols
100: sealed electrical compressor, 101: closed container, 101a: canister portion, 101b: cover, 101c: bottom, 102:
Compression mechanical part, 103: motor, 104: lubricating oil, 105: supplementary bearing, 106: intake line, 107: discharge tube, 108: Gu
Determine the axis of rolling, 109: rotary rolling axis, 109a: swivel bearing, 110: frame, 111: Othemos ring, 112: suction inlet, 113: spitting
Outlet, 115: axis, 115a: cam pin portion, 115b: through hole, 116: base bearing, 117: gap, 118: oil storage pool, 119: top
Space, 120: lower space, 201: stator, 202: rotor, 203: counterweight, the upper counterweight of 203a, 203b: lower balance is matched
Weight, 204: stator winding, 205: rivet, 206: magnet insertion holes, 207: permanent magnet, 207a: permanent magnet, 207b: permanent magnet,
208: through hole, 210 end plates, 210a: end plate, 210b: end plate.
Specific embodiment
Hereinafter, being illustrated based on embodiment of the attached drawing to sealed electrical compressor according to the present invention.The present invention is not
It is limited to following embodiment, various modifications example, the application examples carried out around technological concept of the invention also belongs to model of the invention
In enclosing.
Embodiment 1
Fig. 1 is the longitudinal section of sealed electrical compressor according to an embodiment of the invention.Electrically driven hermetic pressure
Contracting machine 100 is as refrigeration air-conditioner (for example, air-conditioning, refrigerator, refrigerator, freezer showcase etc.) or heating pump type water heater etc.
Refrigeration cycle composition machine and use, include closed container 101, compression mechanical part 102 and electricity as main composition element
Motivation 103.
Closed container 101 is by cylindric canister portion 101a, the cover 101b for being welded on canister portion 101a or more and bottom
101c is constituted, and internal is confined space.Closed container 101 accommodates compression mechanical part 102 and motor 103, in bottom
101c stores the lubricating oil 104 being made of ethers or esters refrigerating machine oil.The pasta of lubricating oil 104 is set as being located at supplementary bearing
105 top.
It is provided with the intake line 106 of the cover 101b of perforation closed container 101, penetrates through the cover of closed container 101
The discharge tube 107 of 101b.
Compression mechanical part 102 is compressed and is spued for the refrigerant gas to R32 to the portion in closed container 101
The top in closed container 101 is arranged in part.Compression mechanical part 102, as main composition part, including the fixed axis of rolling
108, rotary rolling axis 109, frame 110 and Othemos ring 111.
The cover board (lap) for the vortex shape that the fixed axis of rolling 108 is arranged on end plate by setting is constituted, and has been bolted
On frame 110.The peripheral portion of the fixed axis of rolling 108 is equipped with suction inlet 112, is equipped with discharge opening 113 in central portion.Suction inlet 112
It is connected with intake line 106.Discharge opening 113 is connected with the upper space of the compression mechanical part 102 in closed container 101.
Rotary rolling axis 109 is made of the cover board for erectting setting vortex shape on end plate, and rotary rolling axis 109 is clamped in
Between the fixed axis of rolling 108 and frame 110.Rotary rolling axis 109 is meshed to form discharge chambe with the fixed axis of rolling 108.It is revolving
Tumbler moving axis 109 is equipped with swivel bearing 109a with fixed axis of rolling opposite side.Rotary rolling axis 109 is by axis 115 by electronic
Machine 103 is driven.The cam pin portion having for carrying out eccentric drive to rotary rolling axis 109 is fitted on swivel bearing 109a
115a.Cam pin portion 115a is arranged relative to the eccentric axis of axis 115.
Othemos ring 111 is the component for constituting the rotation limiting mechanism of rotary rolling axis 109, is arranged in rotary rolling axis
Between 109 and frame 110, prevent rotary rolling axis 109 transfers to make its progress circular orbit movement certainly.
Frame 110 is welded on closed container 101, supports the fixed axis of rolling 108, Othemos ring 111 and rotary rolling axis
109.The center of frame 110 is provided with canister portion outstanding downwards.The base bearing of support shaft 115 is provided in the canister portion
116。
Motor 103, as main composition element, including stator 201, rotor 202, axis 115 and counterweight 203.
Stator 201 generates determining with multiple conductors for rotating excitation field including being passed through electric current as main composition element
Sub- winding 204 and the stator core formed is laminated by electromagnetic steel plate in order to be effectively conducted rotating excitation field.
Stator core, which is hot pressed, to be fixed in closed container 101.In the periphery of the stator 201, it is formed with throughout complete cycle more
A notch forms gap 117 between the canister portion 101a and stator 201 of closed container 101.Including from 102 row of compression mechanical part
The refrigerant including oil out, by gap 117, from 102 effluent of compression mechanical part to the oil storage pool 118 of storage lubricating oil 104.
The refrigerant being discharged from compression mechanical part 102 is being located at compression relative to motor 103 in closed container 101
The upper space 119 of the motor of 102 side of mechanism part and it is located under the motor of 118 side of oil storage pool relative to motor 103
It is recycled between side space 120, refrigerant is separated with oil.
Axis 115 is entrenched in the medium pore of rotor 202, with 202 being molded as one of rotor.Side (the illustrated example of axis 115
In upside), protrude from rotor 202, engage with compression mechanical part 102, be applied by the compressed action of compression mechanical part 102
With eccentric force.In the present embodiment, axis 115, two sides are prominent from the two sides of rotor 202, in the two sides of rotor 202 by main shaft
Hold 116 and supplementary bearing 105 supported, be able to carry out stable rotation.Supplementary bearing 105 is by being weldingly fixed on closed container 101
On support member supports while, be immersed in lubricating oil 104.
The lower end of axis 115 extends in the oil storage pool 9 of the bottom of closed container 101.It is provided on axis 115 for that will lubricate
The through hole 115b that oil 104 is supplied to each bearing portion and each sliding surface, by the oil storage pool 118 of lower end from through hole 115b
Attract lubricating oil 104.The lubricating oil 104 that will be attracted by oil storage pool 118 by through hole 115b, is supplied to each bearing and compression
The sliding surface of mechanism part 102.It is supplied to the lubricating oil 104 of the sliding part of compression mechanical part 102, with refrigerant gas simultaneously from solid
The outlet 113 for determining the central portion of the axis of rolling 108 is discharged.
Counterweight 203 is existed by the upper counterweight 203a and configuration of 102 side of compression mechanical part configured in rotor 202
The lower counterweight 203b composition with compression mechanical part opposite side of rotor 202, is fixed on rotor 202 by multiple rivets 205
On.
When the rotation of 103 energization rotor 202 of motor, axis 115 also rotates therewith, is revolved by the bias of cam pin portion 115a
Transhipment is dynamic, and rotary rolling axis 109 is driven in rotation, the discharge chambe formed between the fixed axis of rolling 108 and rotary rolling axis 109
Become smaller while mobile from peripheral side towards central portion.The suction passed through from there through the external refrigeration cycle of closed container 101
Enter pipeline 106 and suction inlet 112, sucking refrigerant gas is simultaneously compressed, and compressed refrigerant gas is from the fixed axis of rolling
The outlet 113 of 108 central portion is expelled to the upper space in closed container 101.Above-mentioned movement is repeated.It needs to illustrate
, the stator winding 204 of stator 201 winds by way of concentrating winding.
Next, being illustrated for the structure of rotor 202 using Fig. 2 and Fig. 3.Fig. 2 is an implementation according to the present invention
The longitudinal section of the rotor of example.Fig. 3 is the A-A sectional view in Fig. 2.
In Fig. 2 and Fig. 3, rotor 202 has constituted shell in the rotor core being laminated by electromagnetic steel plate.Rotor 202
On be formed with the magnet insertion holes 206 penetrated through in the axial direction, inserted with permanent magnet 207 in the magnet insertion holes 206.
In the case that rotor 202 uses permanent magnet 207, since the heat loss that eddy current generates becomes problem.Especially, exist
In the case where rotor high speed rotation, since the frequency of variable magnetic field and amplitude of variation also increase other than permanent magnet, therewith
Heat loss also increases.In order to reduce the heat producing losses generated due to the eddy current, in the present embodiment, magnet insertion holes will be inserted into
206 permanent magnet 207 is divided into the circumferential direction of rotor 202 multiple is configured (permanent magnet 207a, 207b).
The permanent magnet 207 of the present embodiment is made of the heavy rare earth metalloid such as neodymium, dysprosium, terbium.
In the axial ends of rotor 202, it is provided with the end plate 210 for preventing permanent magnet 207 from extracting.End plate 210 passes through rivet
205 is fixed.Through hole 208 is formed on rotor 202, end plate 210, upper counterweight 203a, lower counterweight 203b.Rivet
205 by the through hole 208, by tightening from upper counterweight 203a, lower counterweight 203b parts outstanding, by end plate
210, upper counterweight 203a and lower counterweight 203b are fixed on rotor 202.
The axial ends (upper and lower ends in illustrated example) (end plate 210a, 210b) of rotor 202 is arranged in end plate 210.End
Plate 210a is arranged between rotor 202 and upper counterweight 203a, and end plate 210b is arranged in rotor 202 and lower counterweight 203b
Between.
Counterweight 203 is arranged for being corrected to the spin balancing as caused by compression mechanical part 102.Make
For counterweight material, in contrast the high material of density is useful, such as can be applicable in brass material, iron material, zinc material
Material, stainless steel material etc..Iron material be it is relatively inexpensive, therefore, in the present embodiment use iron material.Iron material is used in counterweight
In the case where material, since iron material is magnetic substance, the magnetic flux for configuring the permanent magnet on rotor can be matched by end plate to balance
It reveals again.For this purpose, the torque of enough permanent magnets cannot be obtained as motor, the output of motor is caused to reduce.For with
In the structure for the magnetic flux bleed-through for inhibiting permanent magnet, carry out as described below.
In order to inhibit the magnetic flux bleed-through of permanent magnet, the present embodiment end plates 210 (210a, 210b) are by nonmagnetic material structure
At.As the material of nonmagnetic material, stainless steel material, brass, zinc, aluminium etc. can be applicable in.
End plate 210 is made of nonmagnetic material material only, can't sufficiently inhibit the magnetic flux of permanent magnet to match to balance
The leakage of weight.In order to inhibit the magnetic flux of permanent magnet to reveal to counterweight, it is also necessary to consider between counterweight and rotor
Distance.Existing technology, does not account for the distance between counterweight and rotor.
Herein, in the present embodiment, for the distance between counterweight and the rotor for being able to suppress magnetic flux bleed-through, discovery
Appropriately distance.It is illustrated following with Fig. 4.
Fig. 4 is relationship between display end plate plate thickness (mm) according to an embodiment of the invention and magnetic flux ratio (%)
Figure.In Fig. 4, horizontal axis indicates that the plate thickness (mm) of end plate, the longitudinal axis indicate magnetic flux ratio (%).For magnetic flux ratio, value more it is big then
It is more to the torque of permanent magnet to indicate that magnetic flux is put into.That is, the part of magnetic flux ratio (%) less than 100%, generates magnetic flux and lets out
Dew.
In the present embodiment, since end plate 210 (210a, 210b) is made of a non-magnetic material, for example, even if end plate 210
Plate thickness be 1mm, magnetic flux ratio also has about 96.6%.But the plate thickness of end plate 210 be 1mm when, magnetic flux bleed-through is filled not enough
Point.
As shown in Figure 4, it is known that as the plate thickness of end plate 210 increases, magnetic flux is than increasing.Also, work as the plate thickness of end plate 210
When for 5mm or more, almost magnetic flux is 100%.That is, can sufficiently inhibit permanent magnetism when the plate thickness of end plate 210 is 5mm or more
Leakage of the magnetic flux of iron towards counterweight.As a result, in the present embodiment, by make end plate 210 plate thickness be 5mm with
On, can make the distance between counterweight and rotor be it is separate, be able to suppress the magnetic flux bleed-through of permanent magnet.Also, root
The torsion of the motor generated due to permanent magnet can be efficiently used by inhibiting the magnetic flux bleed-through of permanent magnet according to the present embodiment
Square can be improved the efficiency of motor.In addition, driving compressor in the present embodiment by using the motor, can be realized
The raising of compressor efficiency.
Plate thickness by making end plate 210 is 5mm or more, is able to suppress the magnetic flux bleed-through of permanent magnet, still, works as increase
The plate thickness of end plate 210, then the axial length of motor increases, and causes motor enlarged.In the present embodiment, while considering electronic
The miniaturization of machine preferably makes the plate thickness 10mm degree below of end plate 210.The plate thickness of end plate 210 can be in conjunction with motor
Model is suitably set.
It should be noted that the present invention is not limited to the above embodiments, it also include various modifications example.Above-described embodiment be in order to
The detailed description for being easy to understand the present invention and carrying out is not limited to include illustrated all structures.
Claims (7)
1. a kind of sealed electrical compressor characterized by comprising
To the compression mechanical part that refrigerant is compressed,
The motor of the compression mechanical part is driven, and
Accommodate the closed container of the compression mechanical part and the motor；
The motor includes stator, rotor, the permanent magnet being located on the rotor, the counterweight being fixed on the rotor
And the end plate between the counterweight and the rotor is set,
The end plate is made of nonmagnetic material, meanwhile, the plate thickness of the end plate is 5mm or more.
2. sealed electrical compressor according to claim 1, which is characterized in that the end plate is by stainless steel material, Huang
Any material composition of copper, zinc, aluminium.
3. sealed electrical compressor according to claim 1 or 2, which is characterized in that the counterweight is by iron material
It constitutes.
4. sealed electrical compressor according to claim 1 or 2, which is characterized in that the permanent magnet by include neodymium,
Heavy rare earth metalloid including dysprosium, terbium is constituted.
5. sealed electrical compressor according to claim 1 or 2, which is characterized in that the plate thickness of the end plate be 5mm with
Upper and 10mm or less.
6. sealed electrical compressor according to claim 1 or 2, which is characterized in that the permanent magnet is divided into more
It is a to be configured.
7. sealed electrical compressor according to claim 1 or 2, which is characterized in that the counterweight is by configuring
Lower counterweight of the upper counterweight and configuration of the compression mechanical part side in the opposition side of the compression mechanical part is constituted, institute
End plate is stated to be separately positioned between the upper counterweight and the rotor and between the lower counterweight and the rotor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-202588 | 2017-10-19 | ||
| JP2017202588A JP2019074067A (en) | 2017-10-19 | 2017-10-19 | Hermetic electric compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681427A true CN109681427A (en) | 2019-04-26 |
Family
ID=66183023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711387740.5A Pending CN109681427A (en) | 2017-10-19 | 2017-12-20 | Sealed electrical compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019074067A (en) |
| CN (1) | CN109681427A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009131026A (en) * | 2007-11-22 | 2009-06-11 | Mitsubishi Electric Corp | Electric motor and refrigerant compressor loading the same |
| CN202068246U (en) * | 2011-05-05 | 2011-12-07 | 佛山市顺德区盈富达微电机有限公司 | Novel electric motor with little magnetic flux leakage |
| JP2013249754A (en) * | 2012-05-31 | 2013-12-12 | Hitachi Appliances Inc | Compressor and refrigeration cycle device |
| CN106981958A (en) * | 2017-05-23 | 2017-07-25 | 中达电机股份有限公司 | A kind of internal permanent magnet synchronous motor rotor assembling method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4213798B2 (en) * | 1998-10-08 | 2009-01-21 | アイチエレック株式会社 | Hermetic electric compressor |
| JP3754324B2 (en) * | 2001-03-30 | 2006-03-08 | 三洋電機株式会社 | Induction synchronous motor |
-
2017
- 2017-10-19 JP JP2017202588A patent/JP2019074067A/en active Pending
- 2017-12-20 CN CN201711387740.5A patent/CN109681427A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009131026A (en) * | 2007-11-22 | 2009-06-11 | Mitsubishi Electric Corp | Electric motor and refrigerant compressor loading the same |
| CN202068246U (en) * | 2011-05-05 | 2011-12-07 | 佛山市顺德区盈富达微电机有限公司 | Novel electric motor with little magnetic flux leakage |
| JP2013249754A (en) * | 2012-05-31 | 2013-12-12 | Hitachi Appliances Inc | Compressor and refrigeration cycle device |
| CN106981958A (en) * | 2017-05-23 | 2017-07-25 | 中达电机股份有限公司 | A kind of internal permanent magnet synchronous motor rotor assembling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019074067A (en) | 2019-05-16 |
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Application publication date: 20190426 |