EP4130478A1 - Compresseur rotatif - Google Patents
Compresseur rotatif Download PDFInfo
- Publication number
- EP4130478A1 EP4130478A1 EP21781413.6A EP21781413A EP4130478A1 EP 4130478 A1 EP4130478 A1 EP 4130478A1 EP 21781413 A EP21781413 A EP 21781413A EP 4130478 A1 EP4130478 A1 EP 4130478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- pair
- shaft
- back yoke
- rotary compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 239000003507 refrigerant Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
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
- 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
- F04C18/3562—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/02—Arrangements of bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/52—Bearings for assemblies with supports on both sides
-
- 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
- F04C2240/50—Bearings
- F04C2240/56—Bearing bushings or details thereof
Definitions
- the present disclosure relates to a rotary compressor.
- a rotary compressor is known as a device used for compressing a refrigerant in an air conditioner.
- the rotary compressor includes a motor, a shaft driven by the motor, a rotary piston attached to the shaft, and a cylinder covering the rotary piston.
- the refrigerant is compressed by an eccentric rotation of the rotary piston in the compression chamber of the cylinder.
- An axial gap motor described in PTL 1 has one stator and two rotors facing the stator from both sides in an axial direction.
- the rotary piston and the cylinder described above are independently disposed below the axial gap motor.
- the present disclosure has been made in order to solve the above problems, and an object of the present disclosure is to provide a rotary compressor having a reduced number of parts and a smaller size.
- a rotary compressor including: a shaft that extends along an axis; a disk-shaped rotor that is fixed to the shaft and centered on the axis; a pair of stators that faces the rotor from both sides in a direction of the axis, and includes a disk-shaped back yoke centered on the axis, teeth protruding from the back yoke, and a coil wound around the teeth; a pair of cylinders that abuts on the stator from the direction of the axis and has an annular shape centered on the axis; a rotary piston that rotates eccentrically with the shaft; a pair of end plates that forms a compression chamber for accommodating the rotary piston together with the back yoke by sandwiching the cylinder together with the stator from the direction of the axis; and a pair of bearings that is provided on at least one of the end plate and the back yoke.
- the rotary compressor 100 includes a shaft 1, a rotor 2, a stator 3, a cylinder 4, an end plate 5, a bearing 6, a rotary piston 12, and a housing 7 for accommodating these.
- the shaft 1 has a shaft main body 1H, an upper eccentric shaft 11A, and a lower eccentric shaft 11B.
- the shaft main body 1H has a columnar shape extending along an axis Ac.
- the upper eccentric shaft 11A and the lower eccentric shaft 11B are provided at an interval in a direction of the axis Ac.
- Each of the upper eccentric shaft 11A and the lower eccentric shaft 11B has a disk shape eccentric in a radial direction with respect to the axis Ac.
- Eccentric directions of the upper eccentric shaft 11A and the lower eccentric shaft 11B are different from each other. For example, the eccentric direction of the upper eccentric shaft 11A differs from the eccentric direction of the lower eccentric shaft 11B by 180°.
- the rotor 2 is integrally provided at a position (central portion) in a middle of extension of the shaft main body 1H. That is, the rotor 2 is provided at an intermediate position between the upper eccentric shaft 11A and the lower eccentric shaft 11B.
- the rotor 2 has a rotor core 21 and a permanent magnet 22.
- the rotor core 21 has a disk shape centered on the axis Ac.
- the permanent magnet 22 has a ring shape extending along a peripheral edge of the rotor core 21.
- the stator 3 disposed so as to face the rotor 2 from both sides in the direction of the axis Ac includes an upper stator 3A and a lower stator 3B.
- the upper stator 3A faces the rotor 2 from one side (upper side) in the direction of the axis Ac.
- the upper stator 3A has a back yoke 31A, teeth 32A, and a coil 33A.
- the back yoke 31A has an annular shape centered on the axis Ac. An opening through which the shaft 1 is inserted is formed in a portion including the center of the back yoke 31A.
- the teeth 32A are positioned on a surface of the back yoke 31A facing the other side (lower side) in the direction of the axis Ac, and have a rod shape protruding in the direction of the axis Ac from the center position in the radial direction.
- a plurality of teeth 32A are arranged at equal intervals in the circumferential direction with respect to the axis Ac.
- the coil 33A is formed by winding a copper wire around each tooth 32A. Power is supplied to the coil 33A from a power source (not shown).
- the lower stator 3B has a back yoke 31B, teeth 32B, and a coil 33B.
- the back yoke 31B has an annular shape centered on the axis Ac.
- An opening through which the shaft 1 is inserted is formed in a portion including the center of the back yoke 31B.
- the teeth 32B are positioned on a surface of the back yoke 31B facing one side (upper side) in the direction of the axis Ac, and have a rod shape protruding in the direction of the axis Ac from the center position in the radial direction.
- a plurality of teeth 32B are arranged at equal intervals in the circumferential direction with respect to the axis Ac.
- the coil 33B is formed by winding a copper wire around each tooth 32B. Power is supplied to the coil 33B from a power source (not shown). As a result, the upper stator 3A and the lower stator 3B are excited, and the shaft 1 is rotated by the electromagnetic force generated between the rotor 2 and the stator 3. That is, the rotor 2 and the stator 3 constitute a one rotor-two stator type axial gap motor.
- the cylinder 4 (upper cylinder 4A and lower cylinder 4B) abuts on one side (upper side) of the upper stator 3A in the direction of the axis Ac and the other side (lower side) of the lower stator 3B in the direction of the axis Ac.
- Each of the upper cylinder 4A and the lower cylinder 4B has a cylindrical shape centered on the axis Ac.
- the above-mentioned upper eccentric shaft 11A and the ring-shaped rotary piston 12 (upper rotary piston 12A) fitted in the upper eccentric shaft 11A are accommodated inside the upper cylinder 4A.
- the above-mentioned lower eccentric shaft 11B and the ring-shaped rotary piston 12 (lower rotary piston 12B) fitted in the lower eccentric shaft 11B are accommodated inside the lower cylinder 4B. Further, intake ports 8A and 8B for guiding the refrigerant from the outside are provided in a portion of the upper cylinder 4A and the lower cylinder 4B in the circumferential direction, respectively.
- the end plates 5 (upper end plate 5A, lower end plate 5B) abut on one side (upper side) of the upper cylinder 4A in the direction of the axis Ac and the other side (lower side) of the lower cylinder 4B in the direction of the axis Ac, respectively. That is, the upper end plate 5A sandwiches the upper cylinder 4A together with the back yoke 31A from the direction of the axis Ac. Similarly, the lower end plate 5B sandwiches the lower cylinder 4B together with the back yoke 31B from the direction of the axis Ac.
- Each of the upper end plate 5A and the lower end plate 5B has a disk shape centered on the axis Ac.
- the bearings 6 (upper bearing 6A, lower bearing 6B) are attached to a portion including the centers of the upper end plate 5A and the lower end plate 5B, respectively. A shaft end of the shaft main body 1H is supported by these bearings 6. Further, the upper end plate 5A and the lower end plate 5B are fixed to an inner peripheral surface of the housing 7 in a tightly fitted state.
- a surface of the upper end plate 5A facing the other side (lower side) in the direction of the axis Ac is an end plate main surface 5S.
- a surface of the back yoke 31A facing one side (upper side) of the direction of the axis Ac is a back yoke facing surface 31S.
- An upper compression chamber C1 is formed by the end plate main surface 5S, the back yoke facing surface 31S, and the inner peripheral surface of the upper cylinder 4A. That is, in the present embodiment, a portion (back yoke 31A) of the stator 3 also serves as a member forming a portion of the upper compression chamber C1.
- a lower compression chamber C2 is also formed by the back yoke 31B of the lower stator 3B, the lower end plate 5B, and the lower cylinder 4B, similarly to the upper compression chamber C1.
- the above-mentioned upper rotary piston 12A and lower rotary piston 12B rotate eccentrically, respectively.
- volumes of the upper compression chamber C1 and the lower compression chamber C2 change with time, and the refrigerant taken in from the intake ports 8A and 8B is compressed.
- the compressed refrigerant passes through the inside of the housing 7 and is taken out from a discharge port 7A.
- the back yokes 31A and 31B of the stator 3 form the compression chambers C1 and C2 together with the end plate 5 and the cylinder 4.
- the back yokes 31A and 31B have both a function as a portion of the motor and a function as a portion of the members forming the compression chambers C1 and C2.
- the number of parts can be reduced.
- the size of the device in the direction of the axis Ac can be suppressed by the reduced members.
- the shaft 1 can be supported by both end portions thereof. As a result, noise and vibration are reduced, and the shaft 1 can be rotated more stably.
- a bearing 6' (upper bearing 6A') is integrally provided in a back yoke 31A instead of an end plate 5' (upper end plate 5A').
- the end plate 5' has a disk shape centered on an axis Ac, and no opening or the like is formed in the portion including the center.
- another bearing 6' located at the lower portion is also integrally provided on a back yoke 31B like the upper bearing 6A'.
- the back yoke 31A can be configured to include an annular back yoke main body 34 integrally formed with the teeth 32A and a support plate 35 separately provided from the back yoke main body 34.
- the support plate 35 has a disk shape centered on the axis Ac, and a bearing 6' is provided at the center of the support plate 35.
- the configuration described in the first embodiment (the configuration in which the bearing 6 is provided in the end plate 5) and the configuration described in the second embodiment (the configuration in which the bearing 6' is provided in the back yokes 31A and 31B) can be combined. That is, it is possible to adopt a configuration in which the upper bearing 6A is attached to the end plate 5 and the lower bearing 6B is attached to the back yoke 31B, or a configuration in which the upper bearing 6A is attached to the back yoke 31A and the lower bearing 6B is attached to the end plate 5.
- the rotary compressor 100 described in each embodiment is grasped as follows, for example.
- the present disclosure relates to a rotary compressor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020065992A JP7381386B2 (ja) | 2020-04-01 | 2020-04-01 | ロータリ圧縮機 |
PCT/JP2021/014156 WO2021201223A1 (fr) | 2020-04-01 | 2021-04-01 | Compresseur rotatif |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4130478A1 true EP4130478A1 (fr) | 2023-02-08 |
EP4130478A4 EP4130478A4 (fr) | 2023-08-30 |
Family
ID=77927326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21781413.6A Pending EP4130478A4 (fr) | 2020-04-01 | 2021-04-01 | Compresseur rotatif |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4130478A4 (fr) |
JP (1) | JP7381386B2 (fr) |
WO (1) | WO2021201223A1 (fr) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6469793A (en) * | 1987-09-11 | 1989-03-15 | Hitachi Ltd | Enclosed type motor-driven compressor |
US20060153705A1 (en) * | 2004-11-10 | 2006-07-13 | Horton W T | Drive shaft for compressor |
KR100904353B1 (ko) * | 2005-01-19 | 2009-06-23 | 다이킨 고교 가부시키가이샤 | 회전자, 축방향 갭형 모터, 모터의 구동 방법, 압축기 |
JP4816358B2 (ja) * | 2006-09-19 | 2011-11-16 | ダイキン工業株式会社 | モータおよび圧縮機 |
JP4835384B2 (ja) | 2006-10-26 | 2011-12-14 | ダイキン工業株式会社 | 圧縮機 |
JP5963436B2 (ja) * | 2011-12-21 | 2016-08-03 | 株式会社ヴァレオジャパン | 電動圧縮機 |
JP6001356B2 (ja) * | 2012-06-29 | 2016-10-05 | 株式会社ヴァレオジャパン | 電動圧縮機 |
CN104638866A (zh) * | 2013-11-15 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | 电机及具有该电机的压缩机 |
CN104564685A (zh) * | 2015-01-06 | 2015-04-29 | 广东美芝制冷设备有限公司 | 旋转式压缩机及具有其的制冷装置 |
JP6469793B1 (ja) | 2017-09-19 | 2019-02-13 | 京楽産業.株式会社 | 遊技機 |
JP2020065992A (ja) | 2018-10-26 | 2020-04-30 | 臼井国際産業株式会社 | 気体溶解装置及び藻類培養装置 |
-
2020
- 2020-04-01 JP JP2020065992A patent/JP7381386B2/ja active Active
-
2021
- 2021-04-01 EP EP21781413.6A patent/EP4130478A4/fr active Pending
- 2021-04-01 WO PCT/JP2021/014156 patent/WO2021201223A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021201223A1 (fr) | 2021-10-07 |
EP4130478A4 (fr) | 2023-08-30 |
JP7381386B2 (ja) | 2023-11-15 |
JP2021161989A (ja) | 2021-10-11 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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17P | Request for examination filed |
Effective date: 20220928 |
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DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20230728 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: F04C 29/00 20060101ALI20230724BHEP Ipc: F04C 23/02 20060101AFI20230724BHEP |