CN103511269A - Airtight motor compressor - Google Patents
Airtight motor compressor Download PDFInfo
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- CN103511269A CN103511269A CN201210299069.XA CN201210299069A CN103511269A CN 103511269 A CN103511269 A CN 103511269A CN 201210299069 A CN201210299069 A CN 201210299069A CN 103511269 A CN103511269 A CN 103511269A
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- magnet
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- rare earth
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- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 34
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000004308 accommodation Effects 0.000 claims description 38
- 150000002910 rare earth metals Chemical class 0.000 claims description 30
- 230000005415 magnetization Effects 0.000 claims description 29
- 238000005057 refrigeration Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000005291 magnetic effect Effects 0.000 abstract description 19
- 230000007246 mechanism Effects 0.000 abstract description 19
- 239000003507 refrigerant Substances 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 11
- 230000004907 flux Effects 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 8
- 235000013339 cereals Nutrition 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229910052692 Dysprosium Inorganic materials 0.000 description 3
- 229910052771 Terbium Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000013000 roll bending Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000353097 Molva molva Species 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- SMNRFWMNPDABKZ-WVALLCKVSA-N [[(2R,3S,4R,5S)-5-(2,6-dioxo-3H-pyridin-3-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [[[(2R,3S,4S,5R,6R)-4-fluoro-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] hydrogen phosphate Chemical compound OC[C@H]1O[C@H](OP(O)(=O)OP(O)(=O)OP(O)(=O)OP(O)(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2O)C2C=CC(=O)NC2=O)[C@H](O)[C@@H](F)[C@@H]1O SMNRFWMNPDABKZ-WVALLCKVSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
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- 238000005245 sintering Methods 0.000 description 1
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Images
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
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides an airtight motor compressor which ensures the magnetic force of a motor and improves the retentivity of a Nd-Fe-B sintered magnet. The airtight motor compressor has compressing mechanism part which compresses a refrigerant and a motor that drives the compressing mechanism part, wherein the motor includes a stator having a coil and a rotor having an iron core and a permanent magnet, the permanent magnet consists of a Nd-Fe-B compound with middle-heavy rare earth elements being added, the refrigerant is R32, and the amount of the middle-heavy rare earth elements per unit volume of the Nd-Fe-B compound with a grain boundary from a parent-phase grain being 5nm is more than that of the Nd-Fe-B compound with a grain boundary from the parent-phase grain being closer to an inner part than 5nm.
Description
Technical field
The present invention relates to the sealed electrical compressor using in refrigeration air-conditioner etc.
Background technique
In the past, in refrigerator, air conditioner, refrigerated warehouse etc., used the hydrogeneous not Leon of R-134a, R410A, R407C etc. as refrigeration agent.Although these refrigeration agents can not damage the ozone layer, global warming coefficient is large.
On the other hand, R32 can not damage the ozone layer, and compares with R410A, and global warming coefficient is 1/3 left and right.
Yet, when adopting R32 as refrigeration agent, to compare with R-134a, R410A or R407C, compressor ejection temperature is high, and the permanent magnet using in the motor of compressor may demagnetize.
In patent documentation 1, recorded following situation: in the situation that using R32 as refrigeration agent, by increasing the thickness of the rare earth element magnet using in motor, improve the durability for high temperature demagnetize.
In addition, in patent documentation 2, recorded by being that a part of the Nd of sintered magnet is replaced into Dy and improves stable on heating situation by Nd-Fe-B.
[formerly technical paper]
[patent documentation]
[patent documentation 1] TOHKEMY 2001-115963 communique
[patent documentation 2] TOHKEMY 2008-86128 communique
Yet the compressor of patent documentation 1 has increased the thickness of rare earth element magnet, correspondingly, the size of the magnet core consisting of electromagnetic steel plate is restricted.Therefore, the core volume of electromagnetic steel plate correspondingly reduces magnet increasing amount, and existence cannot be guaranteed the problem that the magnetic force of motor is such.
In addition, there is following problem in the electric rotating machine of patent documentation 2: saturated poleization reduces, and cannot guarantee necessary relict flux density, thereby cannot guarantee the magnetic force of motor.
Summary of the invention
The object of the invention is to provide a kind of magnetic force of guaranteeing motor, and to promote Nd-Fe-B be the confining force of sintered magnet and improve the sealed electrical compressor for the durability of high temperature demagnetize.
In order to solve above-mentioned problem, in sealed electrical compressor of the present invention, possess compression mechanical part that refrigeration agent is compressed and the motor of portion of drive compression mechanism, motor comprises the stator with coil and the rotor with iron core and permanent magnet, permanent magnet Nd-Fe-B compound of heavy rare earth dvielement in having added forms, refrigeration agent is R32, the amount of the middle heavy rare earth dvielement of the per unit volume that is 5nm apart from parent phase Li Li circle of Nd-Fe-B compound more than apart from parent phase Li Li circle than the amount of the middle heavy rare earth dvielement of the per unit volume of the inner portion of 5nm.
[invention effect]
According to the present invention, can guarantee the magnetic force of motor and improve the confining force that Nd-Fe-B is sintered magnet.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of sealed electrical compressor.
Fig. 2 means the stereogram of the part section of rotor.
Fig. 3 means the figure of the number of permanent magnet accommodation section and permanent magnet.
Fig. 4 is the Metal Distribution figure of the parent phase intragranular of Nd-Fe-B compound.
Fig. 5 means the partial sectional view of 1 maximum dose of permanent magnet accommodation section and permanent magnet.
Fig. 6 is the temperature of magnet and the graph of a relation that demagnetize starts electric current.
[symbol description]
1 seal container
1a cylinder portion
1b cap
1c bottom
2 compressing mechanisms
3 fixed eddy plates
4 convolution whirlpool dishes
5 frameworks
5a main bearing
6 axles
6a cam pin portion
6b through hole
7 motor
7a rotor
7b stator
8 lubricant oil
9 long-pending oil places
10 euclidean Rings
11 suction pipes
12 suction ports
14 ejiction openings
15 supplementary bearings
16 balancer weights
The upper balancer weight of 16a
Balancer weight under 16b
17 coil-end
18a, 18b spray gas passageway
The space of the top of 20 motor
The space of the below of 21 motor
22 spraying pipes
23,25 iron cores
24 coils
30 rivets
31 magnet accommodation sections
33 permanent magnets
34Nd
2fe
14b compound
35Li circle
36 are rich in the alloy of Dy
Heavy rare earth dvielement in 37
50 sealed electrical compressors
51 utmost point portions
52 interpolar portions
Embodiment
About the whole structure of the sealed electrical compressor 50 of present embodiment, action, function etc., with reference to Fig. 1～Fig. 3, describe.
Fig. 1 is the longitudinal sectional view of sealed electrical compressor.Sealed electrical compressor 50 as refrigerating air conditioning device (for example, air conditioner, refrigerated warehouse, freezer, Leng KURA refrigerated display case etc.) or the structural device of the refrigeration cycle of heat pump type hot watering supply device etc. and using, seal container 1, compressing mechanism 2 and motor 7 possessed as main structure key element.
Be provided with the suction pipe 11 that the cap 1b of seal container 1 is connected and the spraying pipe 22 that the 1a of cylinder portion of seal container 1 is connected.Spraying pipe 22 be positioned at framework 5 under, to the central direction in seal container 1 is outstanding, arrange.The front end of spraying pipe 22 is projected into central side and opening from the outer circumferential face of coil-end 17.
The refrigerant gas of 2 couples of R32 of compressing mechanism compresses and is ejected in seal container 1, and is arranged on seal container 1 Nei top.Compressing mechanism 2 possesses fixed eddy plate 3, convolution whirlpool dish 4, framework 5 and euclidean Ring 10 as main structure key element.
Fixed eddy plate 3 is erect and the roll bending of scroll is set and forms on end plate, and bolton is on framework 5.Peripheral portion at fixed eddy plate 3 is provided with suction port 12, at central part, is provided with ejiction opening 14.Suction pipe 11 is communicated with suction port 12.Ejiction opening 14 is communicated with the superjacent air space of compressing mechanism 2 in seal container 1.
Peripheral part at fixed eddy plate 3 and framework 5 is formed with a plurality of ejections gas passageway 18a that the superjacent air space of fixed eddy plate 3 is communicated with the lower side space of framework 5.
Motor 7 possesses rotor 7a, stator 7b, axle 6 and balancer weight 16 as main structure key element.
The main structure key element of stator 7b comprises: electric current is flow through and produce the coil with a plurality of conductors 24 of rotating magnetic field; For transmitting expeditiously the iron core 23 of rotating magnetic field.
Fig. 2 means the stereogram of the part section of rotor.The permanent magnet 33 that rotor 7a possesses iron core 25 and is built in iron core 25, as main structure key element, converts the rotating magnetic field from stator 7b to rotatablely move and rotation centered by axle 6 to.Rotor 7a is rotatably configured in the central hole of iron core 23 of stator 7b.
The central hole of axle 6 and rotor 7a is chimeric and carry out integrated with rotor 7a.One side of axle 6 (being upside in illustrated example) is outstanding and engage with compressing mechanism 2 from rotor 7a, by the compressed action of compressing mechanism 2, is applied in eccentric force.In the present embodiment, the both sides of axle 6 are two side-prominent from rotor 7a's, carry out axle supporting, thereby can stably rotate in rotor 7a both sides by main bearing 5a and supplementary bearing 15.Supplementary bearing 15 is fixed on the supporting members supports of seal container 1 by welding, and is immersed in lubricant oil 8.
The lower end of axle 6 is in long-pending oil place's 9 interior extensions of the bottom of seal container 1.At axle 6, be provided with lubricant oil 8 is drawn lubricant oil 8 to the long-pending oil place 9 of the through hole 6b，You underpart of each bearing portion and the supply of each slip surface from through hole 6b.The lubricant oil 8 drawing from Ji Youchu 9 by axle through hole at compressing mechanism 2 is supplied with to the slide part of each bearing and compressing mechanism 2.The lubricant oil 8 of slide part that is supplied to compressing mechanism 2 together with refrigerant gas from ejiction opening 14 ejections of the central part of fixed eddy plate 3.
When motor 7 is energized and rotor 7a when rotation, follow in this, axle 6 also rotates, and the 6a of cam pin portion carries out eccentric rotatablely moving, drive thus dish 4 convolutions of convolution whirlpool, be formed on fixed eddy plate 3 and convolution whirlpool and coil pressing chamber limit between 4 and from outer circumferential side to central part, move limit and reduce.Thus, by the suction pipe 11 that is communicated with the outside refrigeration cycle of seal container 1 and suction port 12, suck refrigerant gas and compress, the upper space ejection of the refrigerant gas after compression in from the ejiction opening 14 of the central part of fixed eddy plate 3 to seal container 1.Repeatedly carry out above-mentioned action.
It should be noted that, the coil 24 of stator 7b is to concentrate winding mode to reel.
Fig. 3 means the figure of the number of permanent magnet accommodation section and permanent magnet.And rotor 7a possesses the permanent magnet 33 being inserted in a plurality of magnet accommodation section 31, by lower balancer weight 16b etc., the lower surface of magnet accommodation section 31 is inaccessible, permanent magnet 33 is kept in order to avoid it falls.
The permanent magnet 33 being inserted in each magnet accommodation section 31 consists of a plurality of, and is supported by lower balancer weight 16b.Like this, a plurality of by permanent magnet 33 is divided into, and can obtain following effect.The first, can realize the cost of permanent magnet monomer.The second, due to the impact from stator 7b magnetic field, at permanent magnet 33, produce eddy current, but by permanent magnet 33 being cut apart and can being reduced eddy current and damage.
It should be noted that, the permanent magnet 33 being inserted in magnet accommodation section 31 consists of 1 magnet.
In addition, rotor 7a comprises the utmost point portion 51 of permanent magnet and the interpolar portion 52 between utmost point portion 51 of imbedding.The length X radially of interpolar portion 52 is shorter than the length Y radially of utmost point portion 51, can reduce thus the width of the iron core that leakage magnetic flux passes through, thereby can reduce the leakage magnetic flux of permanent magnet 33.
Fig. 4 is the Metal Distribution figure of the parent phase intragranular of Nd-Fe-B compound.Permanent magnet 33 is with Nd
2fe
14b compound component alloy is primary coil, when magnet sintering, the alloy 36 that is rich in Dy is mixed, and thus, this alloy is to surround Nd
2fe
14near diffusion profile mode Xiang Li circle 35 of B compound 34.The size of the external magnetic field that Nd-Fe-B magnet generates by the core of anti-magnetic region at crystal grain interface becomes coercive force.
The karyogenesis of the structure Hui Duifan magnetic region at crystal grain interface causes strong effect, and the disorder of the crystal structure of near interface can cause the disorder of magnetic structure, thereby encourages the generation of anti-magnetic region.The growth encourage of generation of magnetic structure Hui Duifan magnetic region that to it has been generally acknowledged that apart from crystalizing interface be the degree of depth of about 5nm is worked.With respect to this, due to Dy or the such middle heavy rare earth dvielement of Tb 37, concentrate and be distributed near a boundary 35, compare with the equally distributed situation of heavy rare earth dvielement 37 in Dy or Tb etc., can improve confining force.Here near ，Li circle 35, refer to apart from crystalizing interface, to be the degree of depth of about 5nm in parent phase grain.
Therefore, by near the middle heavy rare earth dvielement 37 Shi Li circle 35, with respect to the ratio of Nd, be greater than near the ratio of the middle heavy rare earth dvielement 37 of Bi Li circle 35 inner portions, and can improve coercive force.
And near the amount of the middle heavy rare earth dvielement 37 parent phase Li Li circle is more than than near the amount of the middle heavy rare earth dvielement 37 of inner portion parent phase Li Li circle.According to such structure, near inner portion than parent phase Li Li circle, can reduce the amount to the inoperative middle heavy rare earth dvielement 37 of the raising of magnetic force, thereby can improve the relict flux density of permanent magnet 33.
The Mean particle diameter of parent phase grain is 0.5～20 about μ m, refers to as described above in parent phase grain apart from crystalizing interface, to be the degree of depth of 5nm left and right near ，Li circle 35.Near the amount of the middle heavy rare earth dvielement 37 Ji，Dang Li circle, more than than near the amount of the middle heavy rare earth dvielement 37 of inner portion parent phase Li Li circle, distributes compared with unfertile land than near the middle heavy rare earth dvielement 37 of inner portion parent phase Li Li circle.Therefore, can improve significantly the relict flux density of permanent magnet 33.And, the total amount of heavy rare earth dvielement 37 in can reducing, thus the original cost of permanent magnet 33 can be suppressed.
It should be noted that, the relict flux density of permanent magnet 33 of the present invention increases, and correspondingly, when the manufacture of compressor, being difficult to, by permanent magnet 33 magnetization, therefore needs to improve the magnetization voltage of permanent magnet 33 is magnetized.
Fig. 5 means the partial sectional view of 1 maximum dose of permanent magnet accommodation section and permanent magnet.Permanent magnet 33 is accommodated in magnet accommodation section 31.Permanent magnet 33 is cuboid, and the area of the face in the direction of magnetization of permanent magnet 33 is greater than the area of the face in the Vertical direction vertical with the direction of magnetization of permanent magnet 33.
When near Dy or the such middle heavy rare earth dvielement of Tb 37 deflection grain circles, because the dispersion-strengthened distortion of sliding is restricted, for the tolerance enhancing of moment.Yet, when near Dy or the such middle heavy rare earth dvielement of Tb 37 deflection grain circles, fragility variation.
On the other hand, for permanent magnet 33 31 is inserted and needs gap to magnet accommodation section.Especially in order to tackle the size error of permanent magnet 33, the gap of regulation need to be set and permanent magnet 33 31 can be inserted to magnet accommodation section.
As shown in Figure 5, in sealed electrical compressor of the present invention, the permanent magnet 33 in the Vertical direction vertical with the direction of magnetization of permanent magnet 33 and the gap P between magnet accommodation section 31 are narrower than the permanent magnet 33 in the direction of magnetization of permanent magnet 33 and the gap Q between magnet accommodation section 31.
According to such structure, by gap Q is set in magnet accommodation section 31 the interior space that regulation is set, thereby can tackle the size error of permanent magnet 33.And P ratio gap Q is narrow due to gap, therefore can prevents the situation that permanent magnet 33 moves along the Vertical direction vertical with the direction of magnetization, thereby can avoid stress to concentrate on the situation of the interpolar side end of permanent magnet 33.The interpolar side end that therefore, can reduce at permanent magnet 33 causes the possibility of breaking in a boundary.
It should be noted that, the cuboid that is shaped as of permanent magnet 33 refers to the shape with face, comprises the situation that the angle of cuboid is eliminated.
In addition, the permanent magnet 33 that also magnet accommodation section 31 can be accommodated is cut apart a plurality of along the vertical Vertical direction of the direction of magnetization with permanent magnet 33.Because a plurality of permanent magnets 33 are accommodated along the vertical Vertical direction of the direction of magnetization with permanent magnet 33 in magnet accommodation section 31, and therefore the area change of permanent magnet 33 in the Vertical direction vertical with the direction of magnetization of permanent magnet 33 can avoid stress to concentrate.
When a plurality of permanent magnets 33 are housed in to magnet accommodation section 31, the size error of permanent magnet 33 need to tackle by the number Xiang of the permanent magnet of accommodating 33 ?and the value that obtains.Therefore ，Shi gap P is that gap Q is multiplied by below the resulting value of number of permanent magnet 33.
According to such structure, by gap P and gap Q are set in magnet accommodation section 31 the interior space that regulation is set, thereby can tackle the size error of permanent magnet 33.And, by reducing the length moving along the vertical Vertical direction of the direction of magnetization with permanent magnet 33, and can avoid stress concentration at the interpolar side end of permanent magnet 33.
It should be noted that, in the present embodiment, gap Q is 0.1mm.When gap Q becomes large, correspondingly, can form permanent magnet 33 in the direction of magnetization and the air layer between iron core 25, can cause the decline of magnetic force, therefore gap Q can be formed to the length of regulation.
Fig. 6 is the temperature of magnet and the graph of a relation that demagnetize starts electric current.As effect concept map of the present invention, represent the relation that starts current value by the temperature forming and demagnetize of permanent magnet 33, represent the temperature use territory of the kind based on refrigeration agent, the relation of the control electric current of compressor.
Compare with using the situation of R410A, use in the situation of R32, because ejection gas temperature rises, and atmosphere temperature in seal container 1 also rises, and the temperature of permanent magnet 33 also rises.Therefore, in the situation that using existing ferromagnetic material, control electric current and start electric current over demagnetize, due to the decline of relict flux density, can cause hydraulic performance decline.
With respect to this, according to the present invention, under same temperature, compare with existing ferromagnetic material, improve coercive force, demagnetize can be started to current boost for more than controlling electric current.Thus, can provide the compressor that a kind of heat durability is high.
In addition, owing to making the so middle heavy rare earth dvielement of Dy or Tb 37 concentrate the surface that is distributed in particle, therefore compare with the displacement of particle integral body, can suppress the adding quantity of the so middle heavy rare earth dvielement 37 of Dy or Tb, correspondingly, can increase Nd
2fe
14the ratio of B compound, therefore can improve relict flux density.
As described above, hermetic type compressor of the present invention possesses compressing mechanism 2 that refrigeration agent is compressed and the motor 7 of drive compression mechanism 2, motor 7 comprises the stator 7b with coil and the rotor 7a with iron core 25 and permanent magnet 33, permanent magnet 33 Nd-Fe-B compound of heavy rare earth dvielement 37 in having added forms, refrigeration agent is R32, the amount of the middle heavy rare earth dvielement of the per unit volume that is 5nm apart from parent phase Li Li circle of Nd-Fe-B compound more than apart from parent phase Li Li circle than the amount of the middle heavy rare earth dvielement of the per unit volume of the inner portion of 5nm.
In addition, in hermetic type compressor of the present invention, the amount of the middle heavy rare earth dvielement 37 that is 5nm apart from parent phase Li Li circle 35 of Nd-Fe-B compound more than apart from parent phase Li Li circle 35 than the amount of the middle heavy rare earth dvielement 37 of the inner portion of 5nm.
In hermetic type compressor of the present invention, rotor 7a has the magnet accommodation section 31 of accommodating permanent magnet 33, permanent magnet 33 is cuboid, the area of the face in the direction of magnetization of permanent magnet 33 is greater than the area of the face in the Vertical direction vertical with the direction of magnetization of permanent magnet 33, and the permanent magnet 33 in the Vertical direction vertical with the direction of magnetization of permanent magnet 33 and the gap P between magnet accommodation section 31 are narrower than the permanent magnet 33 in the direction of magnetization of permanent magnet 33 and the gap Q between magnet accommodation section 31.
In hermetic type compressor of the present invention, a plurality of permanent magnets 33 are accommodated along the vertical Vertical direction of the direction of magnetization with permanent magnet 33 in magnet accommodation section 31.
In hermetic type compressor of the present invention, the resulting value of number that the permanent magnet 33 of being accommodated by magnet accommodation section 31 is multiplied by the permanent magnet 33 in a plurality of permanent magnets 33 in the interpolar side end of permanent magnet 33 and the direction of magnetization of the Gap-Ratios permanent magnet 33 between magnet accommodation section 31 and the gap between magnet accommodation section 31 is narrow.
According to hermetic type compressor of the present invention, due to being compressed, the refrigerant gas of R32 sprays temperature rising, the permanent magnet 33 that is arranged at rotor 7a due to the refrigerant gas in the interior mobile ejection of seal container 1 is heated and carries out high temperature demagnetize, for such problem, by making middle heavy rare earth dvielement 37, be near the grain circle 35 of parent phase intragranular of Dy deflection Nd-Fe-B compound, and can suppress the decline of relict flux density and effectively increase coercive force, therefore can improve expeditiously durability.
Claims (5)
1. a sealed electrical compressor, wherein,
Possess the compression mechanical part that refrigeration agent is compressed and the motor that drives described compression mechanical part,
Described motor comprises the stator with coil and the rotor with iron core and permanent magnet,
Described permanent magnet Nd-Fe-B compound of heavy rare earth dvielement in having added forms,
Described refrigeration agent is R32,
The amount of the described middle heavy rare earth dvielement of the per unit volume that is 5nm apart from parent phase Li Li circle of described Nd-Fe-B compound more than apart from described parent phase Li Li circle than the amount of the described middle heavy rare earth dvielement of the per unit volume of the inner portion of 5nm.
2. sealed electrical compressor according to claim 1, is characterized in that,
The amount of the described middle heavy rare earth dvielement that is 5nm apart from parent phase Li Li circle of described Nd-Fe-B compound more than apart from described parent phase Li Li circle than the amount of the described middle heavy rare earth dvielement of the inner portion of 5nm.
3. sealed electrical compressor according to claim 1 and 2, is characterized in that,
Described rotor has the magnet accommodation section of accommodating described permanent magnet,
Described permanent magnet is cuboid,
The area of the face in the direction of magnetization of described permanent magnet is greater than the area of the face in the Vertical direction vertical with the direction of magnetization of described permanent magnet,
Described permanent magnet and the gap between described magnet accommodation section described in Gap-Ratios between described permanent magnet in the Vertical direction vertical with the direction of magnetization of described permanent magnet and described magnet accommodation section in the direction of magnetization of permanent magnet are narrow.
4. sealed electrical compressor according to claim 1 and 2, is characterized in that,
Described rotor has the magnet accommodation section of accommodating described permanent magnet,
A plurality of described permanent magnets are accommodated along the vertical Vertical direction of the direction of magnetization with described permanent magnet in described magnet accommodation section,
Described permanent magnet is respectively cuboid,
The area of the face in the direction of magnetization of described permanent magnet is greater than the area of the face in the Vertical direction vertical with the direction of magnetization of described permanent magnet.
5. sealed electrical compressor according to claim 4, is characterized in that,
It is narrow that the resulting value of number of the described permanent magnet of being accommodated by described magnet accommodation section is multiplied by described permanent magnet described in Gap-Ratios between described permanent magnet in the Vertical direction vertical with the direction of magnetization of described permanent magnet and described magnet accommodation section in the direction of magnetization of permanent magnet and the gap between described magnet accommodation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610115884.4A CN105673493B (en) | 2012-06-28 | 2012-08-21 | Sealed electrical compressor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-144911 | 2012-06-28 | ||
| JP2012144911A JP5823928B2 (en) | 2012-06-28 | 2012-06-28 | Hermetic electric compressor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610115884.4A Division CN105673493B (en) | 2012-06-28 | 2012-08-21 | Sealed electrical compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511269A true CN103511269A (en) | 2014-01-15 |
| CN103511269B CN103511269B (en) | 2016-04-06 |
Family
ID=49894539
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610115884.4A Active CN105673493B (en) | 2012-06-28 | 2012-08-21 | Sealed electrical compressor |
| CN201210299069.XA Active CN103511269B (en) | 2012-06-28 | 2012-08-21 | Sealed electrical compressor |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610115884.4A Active CN105673493B (en) | 2012-06-28 | 2012-08-21 | Sealed electrical compressor |
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| Country | Link |
|---|---|
| JP (1) | JP5823928B2 (en) |
| CN (2) | CN105673493B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106464048A (en) * | 2014-04-17 | 2017-02-22 | 江森自控日立空调技术（香港）有限公司 | Permanent-magnet dynamo-electric machine and compressor using same |
| CN106499633A (en) * | 2015-09-07 | 2017-03-15 | 江森自控日立空调技术（香港）有限公司 | Electrically-operated sealed compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115963A (en) * | 1999-10-13 | 2001-04-27 | Daikin Ind Ltd | Compressor |
| JP2009038930A (en) * | 2007-08-03 | 2009-02-19 | Daikin Ind Ltd | Rotor and embedded magnet type motor |
| CN101490928A (en) * | 2006-07-10 | 2009-07-22 | 丰田自动车株式会社 | IPM rotor, IPM rotor manufacturing method and IPM rotor manufacturing apparatus |
| JP2011211069A (en) * | 2010-03-30 | 2011-10-20 | Tdk Corp | Sintered magnet, motor, automobile, and method for producing the sintered magnet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09168247A (en) * | 1995-10-13 | 1997-06-24 | Tec Corp | Inner rotor brushless motor |
| CN2862478Y (en) * | 2005-10-31 | 2007-01-24 | 上海日立电器有限公司 | Magnetic-iron built-in type permanent magnetic synchro speed regulation motor rotor |
-
2012
- 2012-06-28 JP JP2012144911A patent/JP5823928B2/en active Active
- 2012-08-21 CN CN201610115884.4A patent/CN105673493B/en active Active
- 2012-08-21 CN CN201210299069.XA patent/CN103511269B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115963A (en) * | 1999-10-13 | 2001-04-27 | Daikin Ind Ltd | Compressor |
| CN101490928A (en) * | 2006-07-10 | 2009-07-22 | 丰田自动车株式会社 | IPM rotor, IPM rotor manufacturing method and IPM rotor manufacturing apparatus |
| JP2009038930A (en) * | 2007-08-03 | 2009-02-19 | Daikin Ind Ltd | Rotor and embedded magnet type motor |
| JP2011211069A (en) * | 2010-03-30 | 2011-10-20 | Tdk Corp | Sintered magnet, motor, automobile, and method for producing the sintered magnet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106464048A (en) * | 2014-04-17 | 2017-02-22 | 江森自控日立空调技术（香港）有限公司 | Permanent-magnet dynamo-electric machine and compressor using same |
| CN106464048B (en) * | 2014-04-17 | 2019-04-16 | 日立江森自控空调有限公司 | Permanent magnet type electric rotary machine and the compressor for using the permanent magnet type electric rotary machine |
| CN106499633A (en) * | 2015-09-07 | 2017-03-15 | 江森自控日立空调技术（香港）有限公司 | Electrically-operated sealed compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014011829A (en) | 2014-01-20 |
| CN105673493A (en) | 2016-06-15 |
| CN103511269B (en) | 2016-04-06 |
| CN105673493B (en) | 2018-11-13 |
| JP5823928B2 (en) | 2015-11-25 |
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