CN107076149A - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN107076149A CN107076149A CN201580060639.1A CN201580060639A CN107076149A CN 107076149 A CN107076149 A CN 107076149A CN 201580060639 A CN201580060639 A CN 201580060639A CN 107076149 A CN107076149 A CN 107076149A
- Authority
- CN
- China
- Prior art keywords
- rotor
- drive shaft
- counterweight
- metallic plate
- stator
- 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
- 230000006835 compression Effects 0.000 claims abstract description 52
- 238000007906 compression Methods 0.000 claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 54
- 239000010959 steel Substances 0.000 abstract description 54
- 238000005452 bending Methods 0.000 abstract description 29
- 230000007246 mechanism Effects 0.000 abstract description 24
- 239000000203 mixture Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 230000002040 relaxant effect Effects 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- 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
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- 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
- F04C2240/00—Components
- F04C2240/40—Electric motor
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/807—Balance weight, counterweight
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The amount of bow of drive shaft can be reduced it is an object of the invention to provide a kind of, and is reduced as the compressor of the noise produced by the vibration due to bending features value.The compressor possesses：Compression mechanism；Motor, the stator (12) with the rotor (13) for being laminated with multiple steel plates and the outer peripheral portion for being arranged at the rotor (13)；And drive shaft (14), link the motor and the compression mechanism, the first counterweight (35) is provided with the face of the opposite side in the axial compression mechanism side with drive shaft (14) of rotor (13), in the steel plate of stacking, the axis of the steel plate (13A) relative to the drive shaft (14) of the first counterweight (35) side, to the stator (12) side positioned at the diametrically opposite position with first counterweight (35) in the rotor (13) to prominent.
Description
Technical field
The present invention relates to a kind of compressor with swinging compression unit and motor suitable for air regulator etc..
Background technology
Compressor for air regulator drives compression unit by electromagnetic motor.Electromagnetic motor is by rotor and determines
Son etc. is constituted, and rotor is connected with each other with compression unit via drive shaft (axle).Compression unit is rotated by the rotation of the rotor of motor.
One side of drive shaft is fixed in compression unit side, and the another side of drive shaft is in rotor-side formation free end.This
Outside, in the case of Rotary Compressor, drive shaft is provided with crank-pin (cam pin) in compression unit side, and cam pin is embedded in compression
The roller in portion.As a result, the center of gravity of the roller of compression unit produces bias relative to the axis of drive shaft, without positioned at drive shaft
Axis on.Therefore, in order to the rotation by roller and the centrifugal force that produces obtains balance, in the upper surface of rotor or lower surface
Provided with the counterweight as counterweight.
Patent Document 1 discloses following technology following：For the whirling of the rotor that suppresses motor in operation,
And vibration and the noise of rotor are reduced, make the center of drive shaft relative to the center displacement of rotor to being arranged at upper rotor surface
The first counterweight side.In addition, Patent Document 2 discloses following technology：In order to reduce vibration and the noise during operating,
There is drive shaft attaching to have the Part I of rotor and the Part II of cylinder chamber side, make the central shaft of Part I relative to second
Partial central shaft is displaced to the opposite side for the side for being provided with counterweight.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2006-200527 publications
Patent document 2：Japanese Unexamined Patent Publication 2009-74464 publications
The content of the invention
Problems to be solved by the invention
In compressor operation, noise is produced by the vibration due to the bending features value of drive shaft.Based on the resonance
Noise it is bigger than noises due to other vibrations produced in drive shaft.Be difficult to avoid that on the construction of compressor drive shaft because
Characteristic value and resonate.But, even if producing resonance, it can also be made an uproar by reducing the amount of bow of drive shaft to suppress to vibrate and reduce
Sound.
The present invention is to complete in view of the above circumstances, and its object is to provide a kind of to reduce the bending of drive shaft
Amount, reduces the compressor of the noise produced by the vibration due to bending features value.
Technical scheme
The compressor of the first scheme of the present invention possesses：Compression unit；Motor part, with the rotor for being laminated with multiple metallic plates
And it is arranged at the stator of the outer peripheral portion of the rotor；And drive shaft, link the motor part and the compression unit, in institute
The face in the axial side of driving for stating rotor is provided with counterweight portion, in the metallic plate of stacking, the weight
Axis of the metallic plate relative to the drive shaft of code portion side, to the counterweight portion in the diametrically opposite of the rotor
The stator side direction is protruded.
According to this composition, constitute rotor stacking metallic plate to counterweight portion in the diametrically opposite stator side of rotor
To prominent, thus, during the rotor rotation of motor, in the part of metallic plate protrusion, compare metal in the magnetic attraction of stator side generation
The part that plate is not protruded is big.As a result, during rotation, when centrifugal force is worked by counterweight portion, relaxing drive shaft
Bending direction produce magnetic attraction, therefore with the rotor be not present metallic plate protrude part situation compared with, can delay
With the bending of drive shaft.It should be noted that the face of the so-called axial side of driving provided with counterweight portion be, for example, with
The face of the opposite side in face of compression unit side.
In the first scheme of the present invention, in the metallic plate of stacking, the metallic plate phase of counterweight portion side
For the axis of the drive shaft, stagger ground in the diametrically opposite stator side direction of the rotor to the counterweight portion
Stacking.
According to this composition, the metallic plate of stacking of rotor is constituted with prominent to the stator side direction opposite with counterweight portion, by
This, during the rotation of the rotor of motor, the part being highlightedly laminated in metallic plate, the magnetic attraction produced in stator side is than metallic plate not
The part being highlightedly laminated is big.
In the first scheme of the present invention, the metallic plate of the counterweight portion side in the metallic plate of stacking,
With the axis relative to the drive shaft, dashed forward to the counterweight portion in the diametrically opposite stator side direction of the rotor
The mode gone out is applied with metal coating.
According to this composition, the metallic plate of stacking of rotor is constituted with the side prominent to the stator side direction opposite with counterweight portion
Formula is applied with metal coating, thus, during the rotor rotation of motor, the part of metal coating is being applied with, in stator side production
Raw magnetic attraction is bigger than the part that metallic plate is not protruded.
In the first scheme of the present invention, it is also contemplated that the metallic plate is in the radially projecting part of the rotor
Weight, relative to the axis of the drive shaft, reduces the weight of counterweight portion side.
According to this composition, axis of the metallic plate relative to drive shaft even in stacking is prominent to the opposite side in counterweight portion
In the case of, it can also obtain the balance for acting on the centrifugal force of compression unit and acting on the centrifugal force of rotor.
, can also be in the rotor and the axial side of driving in the first scheme of the present invention
The face of opposite another side be provided with the second counterweight portion, in the metallic plate of stacking, the second counterweight portion side it is described
Metallic plate relative to the drive shaft axis, to the second counterweight portion the rotor the diametrically opposite stator
Side is to prominent.
According to this composition, the metallic plate of the second counterweight portion side to the second counterweight portion rotor diametrically opposite stator side
Direction is protruded, the portion also not protruded than metallic plate except the metallic plate of above-mentioned counterweight portion side, the magnetic attraction produced in stator side
Divide big.As a result, compared with the situation for the part that metallic plate is protruded is not present in the rotor, can further relax drive shaft
Bending.
The compressor of the alternative plan of the present invention possesses：Compression unit；Motor part, with the rotor for being laminated with multiple metallic plates
And it is arranged at the stator of the outer peripheral portion of the rotor；And drive shaft, link the motor part and the compression unit, in institute
The face for the side opposite with the axial compression unit side of the driving for stating rotor is provided with counterweight portion, in the inside of the rotor
Multiple permanent magnets are provided with, the permanent magnet for being arranged at side opposite with the axial compression unit side of driving is configured to：
Compared with other parts, relative to the axis of the drive shaft, with the counterweight portion the rotor it is diametrically opposite described in
The magnetic force increase in stator side direction.
According to this composition, the magnetic force of permanent magnet increases to counterweight portion in the diametrically opposite stator side direction of rotor, by
This, during the rotor rotation of motor, in the increased part of the magnetic force of permanent magnet, the magnetic attraction produced in stator side compares other parts
Greatly.As a result, during rotation, centrifugal force is worked by counterweight portion when, due to the bending for relaxing drive shaft
The increased mode in direction produces magnetic attraction, thus with the situation phase for the increased part of magnetic force that permanent magnet is not present in the rotor
Than the bending of drive shaft can be relaxed.
In the alternative plan of the present invention, the described of the opposite side in the axial compression unit side of driving is arranged at
Permanent magnet had both been configurable to compared with other parts, was inclined to the stator side of the radial direction of the rotor, or can also be compared
The magnetic force of the permanent magnet of other parts is strong.
According to this composition, permanent magnet is configured to compared with other parts, and deviation is with counterweight portion in the diametrically opposite of rotor
Stator side, thus, during the rotor rotation of motor, the part configured with being inclined in permanent magnet, the magnetic attraction produced in stator side
The part configured with not being inclined to than permanent magnet is big.Or, permanent magnet with counterweight portion in the diametrically opposite stator side of rotor
To magnetic force it is stronger than other parts, thus, during the rotation of the rotor of motor, in the magnetic force of the permanent magnet part stronger than other parts,
The magnetic attraction produced in stator side is bigger than other parts.
Beneficial effects of the present invention
According to the present invention, the amount of bow of drive shaft can be reduced, reduction is produced by the vibration due to bending features value
Noise.
Brief description of the drawings
Fig. 1 is the profilograph for the compressor for representing the first embodiment of the present invention.
Fig. 2 is the drawing in side sectional elevation of the compression mechanism for the compressor for representing the first embodiment of the present invention.
Fig. 3 is the rotor and the signal profilograph of motor for the compressor for representing the first embodiment of the present invention.
Fig. 4 is the top view of the rotor for the compressor for representing the first embodiment of the present invention.
Fig. 5 be represent the present invention first embodiment compressor rotor and motor the first variation signal
Profilograph.
Fig. 6 is the top view of the first variation of the rotor for the compressor for representing the first embodiment of the present invention.
Fig. 7 be represent the present invention first embodiment compressor rotor and motor the second variation signal
Profilograph.
Fig. 8 is the top view of the second variation of the rotor for the compressor for representing the first embodiment of the present invention.
Fig. 9 be represent the present invention first embodiment compressor rotor and motor the 3rd variation signal
Profilograph.
Figure 10 is the top view of the 3rd variation of the rotor for the compressor for representing the first embodiment of the present invention.
Figure 11 is the rotor for the compressor for representing second embodiment of the present invention and the drawing in side sectional elevation of motor.
Embodiment
[first embodiment]
Hereinafter, with reference to the accompanying drawings of the compressor 1 of the first embodiment of the present invention.As shown in figure 1, present embodiment
Multi-cylinder Rotary Compressor 1 possesses：Top and bottom pass through the closed cylindric closed appearance of upper lid 3 and lower cover 4
Device 2, the top position inside it is provided with motor 5, and the compression mechanism (rotary compressor structure) 6 driven by the motor 5 is set
Put position thereunder.
Installation foot 7 is provided with the lower, outer perimeter of closed container 2.In addition, being provided with insertion upper lid on the top of closed container 2
3 discharge pipe arrangement 8, discharge pipe arrangement 8 is by the higher pressure refrigerant gas compressed by multi-cylinder rotary compressor 1 to kind of refrigeration cycle
Discharge side.Moreover, the peripheral part in closed container 2 is assembled with accumulator 9, the low pressure that 9 pairs of accumulator is returned from kind of refrigeration cycle side
Refrigerant gas in the liquid component such as the oil, the liquid refrigerant that contain separated, only by gas componant via suction pipe arrangement
10th, 11 it is sucked into compression mechanism 6.
Motor 5 possesses stator 12 and rotor 13.Stator 12 is fixedly installed on the inner peripheral surface of closed container 2 by press-in etc..
Rotor 13 is combined with drive shaft 14 and forms one, and thus the rotary driving force of rotor 13 can pass to pressure via drive shaft 14
Contracting mechanism 6.In addition, in the lower portion of drive shaft 14, the first roller 24 and second with Rotary Compressor structure 6 described later
Roller 25 is accordingly provided with the first cam pin 15 and the second cam pin 16.
In the present embodiment, Rotary Compressor structure 6 is set to two-cylinder type, its first and second compression mechanism 6A, 6B
It is formed with the first cylinder chamber 17 and second cylinder chamber 18.Compression mechanism 6 is further equipped with：First cylinder body 19 and the second cylinder body 20,
Space bar (dividing plate) 21, upper bearing 22, lower bearing 23 etc..
First cylinder body 19 and the second cylinder body 20 are corresponding with the first cam pin 15 and the second cam pin 16 of drive shaft 14
Ground is fixedly installed in closed container 2.Dividing plate 21 is clipped between the first cylinder body 19 and the second cylinder body 20, divides the first cylinder chamber 17
And second cylinder chamber 18.Upper bearing 22 is arranged at the upper surface of the first cylinder body 19, divides the first cylinder chamber 17 and supports driving
Axle 14.Lower bearing 23 is arranged at the lower surface of the second cylinder body 20, divides second cylinder chamber 18 and supports drive shaft 14.
First and second compression mechanism 6A, 6B possesses respectively：First roller 24 and the second roller 25, slide plate 28 and
29。
It is eccentric that first roller 24 and the second roller 25 are rotatably embedded in the first cam pin 15 and second respectively
Pin 16, is rotated in the first cylinder chamber 17 and second cylinder chamber 18.First cam pin 15 and the second cam pin 16 and drive shaft 14
Coupling, integratedly rotates together with drive shaft 14.The center of gravity of the second roller 25 of the second cam pin 16 is embedded in relative to driving
The axis of axle 14, positioned at the opposite side of the center of gravity for the first roller 24 for being embedded in the first cam pin 15.
As shown in Fig. 2 slide plate 28 and 29, which is sliding freely embedded in, is arranged at the first cylinder body 19 and the second cylinder body 20
Vane slot 26,27, will be separated into the first cylinder chamber 17 and second cylinder chamber 18 suction chamber side and discharge room side.
The refrigerant gas of low pressure is sucked into the first and second pressure from suction pipe arrangement 10,11 via suction inlet 30,31
In the first cylinder chamber 17 and second cylinder chamber 18 of contracting mechanism 6A, 6B.
The refrigerant gas being sucked into the first cylinder chamber 17 and second cylinder chamber 18 passes through the first roller 24 and the second rolling
The rotation of wheel 25 is discharged by after compression via outlet and dump valve (omit and illustrate) into discharge chamber 32,33.Discharge
After refrigerant gas in discharge chamber 32,33 is discharged in closed container 2, by discharging pipe arrangement 8 to kind of refrigeration cycle
Send out.
Constitute the first cylinder body 19 and the second cylinder body 20, dividing plate 21, upper bearing 22 and lower bearing of compression mechanism 6
23 are fastened as a whole via bolt.In addition, the underfill in closed container 2 has the refrigerating machine oils 34, energy such as PAG oil, POE oil
Enough via oil supplying hole being arranged in drive shaft 14 etc., the lubricant housings fuel feeding into compression mechanism 6.It is appropriate in refrigerating machine oil 34
Ground, which is added with, is adapted to various oily extreme pressure agents.It should be noted that to the mechanism of the fuel feeding of compression mechanism 6 be usually used structure
Into omission herein is described in detail.
First counterweight 35 is arranged at the upper surface of rotor 13, that is, is arranged at the side of the axis direction of drive shaft 14
, the face of side opposite with the side where compression mechanism 6.In addition, the center of gravity of the first counterweight 35 is relative to drive shaft 14
Axis, positioned at the opposite side with the center of gravity of the first roller 24.Second counterweight 36 is arranged at the lower surface of rotor 13, that is, sets
The face of the side where the opposite side of axis direction, compression mechanism 6 in drive shaft 14.In addition, the second counterweight 36
Center of gravity relative to drive shaft 14 axis, positioned at the opposite side with the center of gravity of the second roller 25.
First counterweight 35 and the second counterweight 36 are provided with by the upper and lower surface in rotor 13, applied
Can be with passing through the first roller 24 and the second roller 25 in the centrifugal force of the first counterweight 35 and the second counterweight 36
Rotation and produce, put on the first roller 24 and the centrifugal force of the second roller 25 obtain balance.
Rotor 13 be multiple steel plate mutually insulateds be laminated in the axial direction of drive shaft 14.Steel plate is magnetic metal
One or other magnetic holding plates of plate.Suppress the generation of vortex flow by stacked steel plate.In the past, each steel plate was matched somebody with somebody
The outer surface of rotor 13 is set on the same face.Therefore, the gap being formed in the past between stator 12 and rotor 13 (is also referred to as
Air gap) to be spaced in circumferential be fixed.Air gap is determined by size of motor 5 etc., such as from 100 μm to hundreds of μm.
On the other hand, for the air gap of present embodiment, when rotor 13 stops the rotation, in the upside of rotor 13, that is, driving
Opposite side side, with the side where compression mechanism 6 of the axis direction of moving axis 14, the setting side of the first counterweight 35
It is different with the interval of the air gap of side opposite from the setting side of the first counterweight 35 relative to drive shaft 14.Relative to drive shaft 14
The air gap of side opposite with the setting side of the first counterweight 35 is narrower than the air gap of the setting side of the first counterweight 35.
For example, as shown in Figure 3 and 4, being laminated in the steel plate 13A and steel plate 13B in addition of the upside of rotor 13
Compare, to stagger ground to the prominent mode in the direction of the stator 12 positioned at the opposite position in the setting side with the first counterweight 35
Configuration.Here, steel plate 13A flat shape is identical with steel plate 13B flat shape.Steel plate 13A offset is, for example, air gap
Interval 1/10 or so.Produced it should be noted that Fig. 3 schematically illustrates rotor 13 using the side of compression mechanism 6 as fixing end
The situation of whirling (Fig. 5, Fig. 7, Fig. 9 described below is also same).
The steel plate 13A configured with staggering number is for example in the upside of rotor 13 dependent on the increased magnetic attraction of institute
A few percent to percent tenths of scope steel plate.It should be noted that assuming that minimum number is one, it is assumed that maximum
1/2 to 2/3 scope of numerical example all steel plates in this way.It should be noted that figure 3 illustrates in all steel configured with staggering
In plate 13A, the value identical situation of steel plate 13A offset.Steel plate 13A offset is not limited to the example, can be with direction
Upside and stepwise or smoothly increase offset etc., and it is not limited to example illustrated.
Configured with staggering by the steel plate 13A of the upside by rotor 13 is laminated in, when rotor 13 stops the rotation, relative to
Drive shaft 14, air gap of the air gap than the setting side of the first counterweight 35 of side opposite with the setting side of the first counterweight 35
It is narrow.As a result, the steel plate 13A of rotor 13 is prominent to the opposite side of the first counterweight 35, thus, the rotor 13 of motor 5 revolves
When turning, the magnetic attraction bigger than part beyond ledge is produced in the side of stator 12.That is, matched somebody with somebody in centrifugal force by the first balance
When weighing 35 and work, by configuring steel plate 13A with staggering as above, in the direction for the bending for relaxing drive shaft 14, i.e.
The direction opposite with the first counterweight 35 relative to the axis of drive shaft 14 produces magnetic attraction, can relax the curved of drive shaft 14
It is bent.
As a result, in the case that drive shaft 14 produces resonance because of characteristic value, with configuring steel plate with not staggering
Situation is compared, and can also reduce the amount of bow of drive shaft 14, can reduce the noise produced by the vibration due to bending features value.
For the steel plate 13 of rotor 13, it is also contemplated that steel plate 13A ledge, the axis relative to drive shaft 14 subtracts
The weight of few side of first counterweight 35.Show to subtract by forming through hole 40 respectively in steel plate 13A in Fig. 5 and Fig. 6
The example of few weight.
In the case where configuring steel plate 13A with staggering, it is possible to increase magnetic attraction, but situation about not staggering with steel plate 13A
Compare, may deteriorate with putting on the balance of centrifugal force of the first roller 24 and the second roller 25.It should be noted that by
It is smaller than the weight of the first counterweight 35 in the weight of ledge, therefore can speculate that the ratio that balance deteriorates is no so big.
As shown in figs.5 and 6, by forming through hole 40, the centrifugal force for putting on the top of rotor 13 can be with passing through
The rotation of first roller 24 and the second roller 25 and the centrifugal force for producing, putting on the first roller 24 and the second roller 25
Obtain balance.
It should be noted that being shown in Fig. 5 and Fig. 6 in the stator 12 to the opposite side positioned at the first counterweight 35
All steel plate 13A that direction is protruded set the situation of through hole 40, but the present invention is not limited to the example.That is, can also be in steel plate
A 13A part sets through hole 40.In addition it is also possible to not set through hole 40 in steel plate 13A, but consider steel plate 13A's
Ledge, the first counterweight 35 of reduction weight of itself.
The compressor of the first embodiment of the present invention is explained above, but the present invention is not limited to above-mentioned embodiment
Composition.
For example, in the above-described embodiment, illustrating following example：In order to reduce by the centrifugation of the first counterweight 35
The bending that power is produced, in the narrower intervals of the air gap of the upside of rotor 13, but the present invention is not limited to the example.
For example, as shown in Figure 7 and Figure 8, be laminated in rotor 13 downside steel plate 13C with pars intermedia in addition
Point steel plate 13B compare, the prominent mode in stator 12 side opposite to the setting side with the second counterweight 36 is configured with staggering
Also may be used.Thus, when rotor 13 stops the rotation, in the downside of rotor 13, i.e., drive shaft 14 axis direction opposite side, pressure
Side where contracting mechanism 6, the air gap of side opposite with the setting side of the second counterweight 36 relative to drive shaft 14 is more flat than second
The air gap of the setting side for the counterweight 36 that weighs is narrow.
As a result, the steel plate 13C of rotor 13 is prominent to the opposite side of the second counterweight 36, and thus, the rotor of motor 5
During 13 rotation, the magnetic attraction bigger than part beyond ledge is produced in the side of stator 12.That is, it is flat by second in centrifugal force
When weighing apparatus counterweight 36 works, drive shaft 14 produces bending, by configuring steel plate 13C with staggering as above, relaxing
The direction of the bending of drive shaft 14, radial direction i.e. opposite with the second counterweight 36 relative to the axis of drive shaft 14 produce magnetic
Gravitation, can relax the bending of drive shaft 14.
In accordance with the above, the steel plate 13C of rotor 13 by staggering is configured, in drive shaft 14 because characteristic value produces resonance
In the case of, the amount of bow of drive shaft 14 can be reduced, if together staggering with the steel plate 13A of rotor 13, can further reduce by
The noise produced due to the vibration of bending features value.If it should be noted that the amount of bow of drive shaft 14 is in rotor 13
Downside is larger, then can configure the steel plate 13C of rotor 13 with only staggering.
In addition, in the above-described embodiment, be laminated in rotor 13 upside steel plate 13A with steel plate phase in addition
Than the mode prominent to the opposite side of the setting side with the first counterweight 35 is configured with staggering, but the present invention is not limited to this
Example.That is, when rotor 13 stops the rotation, the air gap ratio of side opposite with the setting side of the first counterweight 35 relative to drive shaft 14 is made
The air gap of the setting side of first counterweight 35 is narrow, for example, as shown in Fig. 9 and Figure 10, can also be by steel plate 13A
Outer peripheral portion implement coating layer in addition to set ledge 41.In this case, ledge 41 passes through silver paste (silver
) etc. paste formed.Or, ledge 41 can also be by making the steel plate of steel plate 13A flat shape with other parts in itself
13B shape difference is formed.
Ledge 41 is formed in the steel plate 13A of stacking, relative to setting for drive shaft 14 and the first counterweight 35
Put the opposite side of side.Thus, it is opposite with the setting side of the first counterweight 35 relative to drive shaft 14 when rotor 13 stops the rotation
The air gap of side is narrower than the air gap of the setting side of the first counterweight 35.As a result, the steel plate 13A of rotor 13 ledge 41
To prominent with the opposite side of the first counterweight 35, thus, when the rotor 13 of motor 5 rotates, produced in the side of stator 12 than protruding
The big magnetic attraction in part beyond part 41.That is, centrifugal force is worked by the first counterweight 35, drive shaft 14 is produced
When bending, by being formed with ledge 41 as above, relax drive shaft 14 bending direction, i.e. relative to
The direction that the axis of drive shaft 14 is located at stator 12 side opposite with the first counterweight 35 produces magnetic attraction, can relax driving
The bending of axle 14.
As a result, in the case that drive shaft 14 produces resonance because of characteristic value, can also reduce the curved of drive shaft 14
Qu Liang, can reduce the noise produced by the vibration due to bending features value.
[second embodiment]
Then the compressor of second embodiment of the present invention is illustrated.Due to the compressor and above-mentioned first of present embodiment
Comparatively speaking rotor is different for the compressor of embodiment, therefore the rotor 13 of following explanation present embodiment.Due to rotor 13 with
Outer inscape is repeated with first embodiment, therefore omits detailed description.
Rotor 13 be multiple steel plate mutually insulateds be laminated in the axial direction of drive shaft 14.Pressed down by stacked steel plate
The generation of vortex flow processed.Each steel plate of present embodiment is configured in the way of the outer surface of rotor 13 is on the same face.Therefore, shape
It is fixed into being spaced in circumferential for the gap (air gap) between stator 12 and rotor 13.
There is permanent magnet 42,50 in the inside embedment of rotor 13.It should be noted that Figure 11 represents matching somebody with somebody for permanent magnet 42,50
Put example, but be configured at size, position, direction of the permanent magnet of the inside of rotor 13 etc. and be not limited to configuration shown in Figure 11
Example.
Permanent magnet 42,50 is configured in the opening portion for being formed at steel plate.It is being laminated in the steel plate 13D of the upside of rotor 13
In, permanent magnet 42 with addition be arranged at steel plate 13E permanent magnet 50 compared with, set to positioned at first counterweight 35
The direction for putting the opposite stator 12 in side is configured with staggering.Here, steel plate 13D flat shape and steel plate 13E flat shape phase
Together.
That is, it is identical with the configuration of the permanent magnet in conventional rotor, it is arranged at multiple permanent magnetism beyond the upside of rotor 13
Body 50 is arranged to point symmetry centered on the axis of drive shaft 14.On the other hand, as described above, being arranged at the upside of rotor 13
Multiple permanent magnets 42 are configured with staggering to the opposite side of the setting side of the first counterweight 35, the center of the point symmetry of permanent magnet 42
Stagger also relative to the axis of drive shaft 14 to the opposite side of the setting side with the first counterweight 35.
Thus, when the rotor 13 of motor 5 rotates, in the upside of rotor 13, the upside than rotor 13 is produced in the side of stator 12
Big magnetic attraction in addition.That is, when centrifugal force is worked by the first counterweight 35, drive shaft 14 produces bending,
By configuring permanent magnet 42 with staggering as above, in the direction for the bending for relaxing drive shaft 14, i.e., relative to drive shaft 14
The axis radial direction opposite with the first counterweight 35 produce magnetic attraction, the bending of drive shaft 14 can be relaxed.
As a result, in the case that drive shaft 14 produces resonance because of characteristic value, can also reduce the curved of drive shaft 14
Qu Liang, can reduce the noise produced by the vibration due to bending features value.
It is explained above the following example of the compressor on second embodiment of the present invention：In order to reduce by first
The bending that the centrifugal force of counterweight 35 is produced, the set location for making permanent magnet 42 in the upside of rotor 13 staggers, but the present invention
It is not limited to the example.
That is, in the upside of rotor 13, magnetic attraction is in the direction for the bending for relaxing drive shaft 14, i.e. relative to drive shaft 14
Axis opposite with the first counterweight 35 radially increase.For example, being balanced relative to the axis of drive shaft 14 and first
The axis that the magnetic force for the permanent magnet that counterweight 35 is configured on the contrary is better than relative to drive shaft 14 is configured at the side of the first counterweight 35
Permanent magnet.
In this case, also can be in the direction for the bending for relaxing drive shaft 14, i.e., relative to the axis of drive shaft 14 and the
The opposite radial direction of one counterweight 35 produces magnetic attraction, can relax the bending of drive shaft 14.
In addition, illustrating following example in the above-described embodiment：The permanent magnet 42 of the upside of rotor 13 will be configured at
It is configured to magnetic attraction to radially increase to the axis relative to drive shaft 14 is opposite with the first counterweight 35, for being configured at
The permanent magnet of the downside of rotor 13 can also be configured similarly.In this case, the permanent magnet for being configured at the downside of rotor 13 is matched somebody with somebody
Magnetic attraction is set to radially increase to the axis relative to drive shaft 14 is opposite with the second counterweight 36.
Moreover, illustrate above-mentioned first and second embodiment compressor be multi-cylinder rotary compressor situation, but
The present invention is not limited to the compressor of the form.For example, both can apply to be provided only with the revolution of a Rotary Compressor structure
Compressor, can also apply to scroll compressor provided with one or more scroll compressor mechanisms etc..
Symbol description
1 compressor
2 closed containers
5 motors (motor part)
6 compression mechanisms (compression unit)
The compression mechanisms of 6A first
The compression mechanisms of 6B second
8 discharge pipe arrangements
9 accumulators
10th, 11 suction pipe arrangement
12 stators
13 rotors
13A, 13B, 13C, 13D, 13E steel plate
14 drive shafts
15 first cam pins
16 second cam pins
17 first cylinder chambers
18 second cylinder chambers
19 first cylinder bodies
20 second cylinder bodies
24 first rollers
25 second rollers
35 first counterweights (counterweight portion)
36 second counterweights (the second counterweight portion)
40 through holes
41 ledges
42nd, 50 permanent magnet
Claims (according to the 19th article of modification of treaty)
(1. after modification)
A kind of compressor, possesses：
Compression unit；
Motor part, with being laminated with the rotor of multiple flat shape identical metallic plates and be arranged at the peripheral part of the rotor
The stator divided；And
Drive shaft, links the motor part and the compression unit,
Counterweight portion is provided with the face of the axial side of the driving of the rotor,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of counterweight portion side, to
The counterweight portion is protruded in the diametrically opposite stator side direction of the rotor.
2. compressor according to claim 1, wherein,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of counterweight portion side, to
The counterweight portion is laminated with staggering in the diametrically opposite stator side direction of the rotor.
3. compressor according to claim 1, wherein,
The metallic plate of counterweight portion side in the metallic plate of stacking, with the axis relative to the drive shaft,
Metal coating is applied with to the mode prominent in the diametrically opposite stator side direction of the rotor with the counterweight portion.
4. compressor according to any one of claim 1 to 3, wherein,
Consider weight of the metallic plate in the radially projecting part of the rotor, relative to the axis of the drive shaft, subtract
The weight of few counterweight portion side.
5. compressor according to any one of claim 1 to 4, wherein,
The second counterweight is provided with the face of the another side opposite with the axial side of driving of the rotor
Portion,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of the second counterweight portion side,
To prominent in the diametrically opposite stator side direction of the rotor with the second counterweight portion.
6. a kind of compressor, possesses：
Compression unit；
Motor part, the stator with the rotor for being laminated with multiple metallic plates and the outer peripheral portion for being arranged at the rotor；And
Drive shaft, links the motor part and the compression unit,
Counterweight portion is provided with the face of the opposite side in the axial compression unit side of the rotor and the driving,
Multiple permanent magnets are internally provided with the rotor,
The permanent magnet for being arranged at side opposite with the axial compression unit side of driving is configured to：With other parts phase
Than relative to the axis of the drive shaft, with the counterweight portion in the diametrically opposite stator side direction of the rotor
Magnetic force increase.
7. compressor according to claim 6, wherein,
It is arranged at and is configured to and other portions with the permanent magnet of the opposite side of the axial compression unit side of driving
Split-phase ratio, is inclined to the stator side of the radial direction of the rotor, or compared with the permanent magnet of other parts, magnetic force is strong.
Claims (7)
1. a kind of compressor, possesses：
Compression unit；
Motor part, the stator with the rotor for being laminated with multiple metallic plates and the outer peripheral portion for being arranged at the rotor；And
Drive shaft, links the motor part and the compression unit,
Counterweight portion is provided with the face of the axial side of the driving of the rotor,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of counterweight portion side, to
The counterweight portion is protruded in the diametrically opposite stator side direction of the rotor.
2. compressor according to claim 1, wherein,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of counterweight portion side, to
The counterweight portion is laminated with staggering in the diametrically opposite stator side direction of the rotor.
3. compressor according to claim 1, wherein,
The metallic plate of counterweight portion side in the metallic plate of stacking, with the axis relative to the drive shaft,
Metal coating is applied with to the mode prominent in the diametrically opposite stator side direction of the rotor with the counterweight portion.
4. compressor according to any one of claim 1 to 3, wherein,
Consider weight of the metallic plate in the radially projecting part of the rotor, relative to the axis of the drive shaft, subtract
The weight of few counterweight portion side.
5. compressor according to any one of claim 1 to 4, wherein,
The second counterweight is provided with the face of the another side opposite with the axial side of driving of the rotor
Portion,
In the metallic plate of stacking, axis of the metallic plate relative to the drive shaft of the second counterweight portion side,
To prominent in the diametrically opposite stator side direction of the rotor with the second counterweight portion.
6. a kind of compressor, possesses：
Compression unit；
Motor part, the stator with the rotor for being laminated with multiple metallic plates and the outer peripheral portion for being arranged at the rotor；And
Drive shaft, links the motor part and the compression unit,
Counterweight portion is provided with the face of the opposite side in the axial compression unit side of the rotor and the driving,
Multiple permanent magnets are internally provided with the rotor,
The permanent magnet for being arranged at side opposite with the axial compression unit side of driving is configured to：With other parts phase
Than relative to the axis of the drive shaft, with the counterweight portion in the diametrically opposite stator side direction of the rotor
Magnetic force increase.
7. compressor according to claim 6, wherein,
It is arranged at and is configured to and other portions with the permanent magnet of the opposite side of the axial compression unit side of driving
Split-phase ratio, is inclined to the stator side of the radial direction of the rotor, or compared with the permanent magnet of other parts, magnetic force is strong.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014251738A JP6502078B2 (en) | 2014-12-12 | 2014-12-12 | Compressor |
| JP2014-251738 | 2014-12-12 | ||
| PCT/JP2015/072828 WO2016092906A1 (en) | 2014-12-12 | 2015-08-12 | Compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107076149A true CN107076149A (en) | 2017-08-18 |
Family
ID=56107104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580060639.1A Pending CN107076149A (en) | 2014-12-12 | 2015-08-12 | Compressor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3217014B1 (en) |
| JP (1) | JP6502078B2 (en) |
| CN (1) | CN107076149A (en) |
| WO (1) | WO2016092906A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111628586A (en) * | 2019-02-27 | 2020-09-04 | 信浓绢糸株式会社 | Rotor of inner rotor type motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208842A (en) * | 1981-06-19 | 1982-12-22 | Toshiba Corp | Stacking method of iron core |
| JPS6413282U (en) * | 1987-07-14 | 1989-01-24 | ||
| JP2002272073A (en) * | 2001-03-08 | 2002-09-20 | Nissan Motor Co Ltd | Rotating electric machine |
| WO2004043566A2 (en) * | 2002-11-13 | 2004-05-27 | Deka Products Limited Partnership | Distillation with vapour pressurization |
| JP2006042544A (en) * | 2004-07-29 | 2006-02-09 | Matsushita Electric Ind Co Ltd | Sealed motor compressor |
| JP2013174189A (en) * | 2012-02-24 | 2013-09-05 | Daikin Industries Ltd | Compressor |
| JP2014128101A (en) * | 2012-12-26 | 2014-07-07 | Toyota Industries Corp | Motor-driven compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5080287B2 (en) * | 2008-01-09 | 2012-11-21 | 株式会社日立産機システム | Compressor motor |
-
2014
- 2014-12-12 JP JP2014251738A patent/JP6502078B2/en active Active
-
2015
- 2015-08-12 WO PCT/JP2015/072828 patent/WO2016092906A1/en active Application Filing
- 2015-08-12 CN CN201580060639.1A patent/CN107076149A/en active Pending
- 2015-08-12 EP EP15866661.0A patent/EP3217014B1/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57208842A (en) * | 1981-06-19 | 1982-12-22 | Toshiba Corp | Stacking method of iron core |
| JPS6413282U (en) * | 1987-07-14 | 1989-01-24 | ||
| JP2002272073A (en) * | 2001-03-08 | 2002-09-20 | Nissan Motor Co Ltd | Rotating electric machine |
| WO2004043566A2 (en) * | 2002-11-13 | 2004-05-27 | Deka Products Limited Partnership | Distillation with vapour pressurization |
| JP2006042544A (en) * | 2004-07-29 | 2006-02-09 | Matsushita Electric Ind Co Ltd | Sealed motor compressor |
| JP2013174189A (en) * | 2012-02-24 | 2013-09-05 | Daikin Industries Ltd | Compressor |
| JP2014128101A (en) * | 2012-12-26 | 2014-07-07 | Toyota Industries Corp | Motor-driven compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111628586A (en) * | 2019-02-27 | 2020-09-04 | 信浓绢糸株式会社 | Rotor of inner rotor type motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6502078B2 (en) | 2019-04-17 |
| EP3217014A1 (en) | 2017-09-13 |
| EP3217014A4 (en) | 2018-01-10 |
| WO2016092906A1 (en) | 2016-06-16 |
| JP2016113923A (en) | 2016-06-23 |
| EP3217014B1 (en) | 2019-05-22 |
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Effective date of registration: 20170831 Address after: Tokyo, Japan, Japan Applicant after: MITSUBISHI heavy industry refrigeration air conditioning system Co Ltd Address before: Tokyo, Japan Applicant before: Mit-subishi Heavy Industries Ltd. |
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