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WO2008062789A1 - Compresseur rotatif et dispositif de cycle de réfrigération - Google Patents

Compresseur rotatif et dispositif de cycle de réfrigération Download PDF

Info

Publication number
WO2008062789A1
WO2008062789A1 PCT/JP2007/072460 JP2007072460W WO2008062789A1 WO 2008062789 A1 WO2008062789 A1 WO 2008062789A1 JP 2007072460 W JP2007072460 W JP 2007072460W WO 2008062789 A1 WO2008062789 A1 WO 2008062789A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotary compressor
electric motor
valve cover
compression mechanism
rotor
Prior art date
Application number
PCT/JP2007/072460
Other languages
English (en)
Japanese (ja)
Inventor
Kazu Takashima
Shogo Shida
Shoichiro Kitaichi
Izumi Onoda
Original Assignee
Toshiba Carrier Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Carrier Corporation filed Critical Toshiba Carrier Corporation
Priority to JP2008545407A priority Critical patent/JPWO2008062789A1/ja
Publication of WO2008062789A1 publication Critical patent/WO2008062789A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—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 of similar working principle
    • 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

Definitions

  • the present invention relates to a rotary compressor and a refrigeration cycle apparatus that constitute a refrigeration cycle such as an air conditioner, for example.
  • a rotary compressor used in a refrigeration cycle such as an air conditioner is configured to compress a fluid in a hermetically sealed case and to drive the compression mechanism via a main shaft (rotating shaft). And an electric motor part to be installed!
  • this rotary compressor has a problem that electromagnetic noise of the electric motor section increases with the concentrated winding of the stator constituting the electric motor section and the rare earth of the permanent magnet of the rotor.
  • electromagnetic noise of the electric motor section increases with the concentrated winding of the stator constituting the electric motor section and the rare earth of the permanent magnet of the rotor.
  • the natural frequency of the rotor and the spindle system coincides with an integral multiple of the compressor operating frequency, there has been a problem that the rotor whirling increases and the electromagnetic noise at that frequency increases.
  • a discharge valve for discharging compressed gas is provided on the surface of the compression mechanism portion facing the electric motor side, and this discharge valve is covered with a valve cover.
  • the inner peripheral dimension of the stator is reduced by an optimum efficiency design associated with the rare earth of the permanent magnet of the rotor.
  • the outer diameter dimension of the portion of the valve cover facing the stator side is relatively large with respect to the inner peripheral dimension of the stator, and the coil end of the stator or the inside of the bobbin that is an insulating member. It is in a state in which it is difficult to sufficiently insert into the peripheral portion (see, for example, JP-A-2002-371962).
  • valve cover is disposed in the inner peripheral space of the stator (see, for example, JP-A-2001-263239).
  • the present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide a rotary compressor and a refrigeration cycle apparatus that can reduce electromagnetic noise and resonance noise. Objective.
  • a rotary compressor is a sealed case, an electric mechanism portion provided in the sealed case, and driven by the electric motor portion via a rotating shaft, and faces the electric motor portion side.
  • a compression mechanism for discharging compressed gas from the discharge valve, and a valve cover fixed to the compressor structure by a fixture and covering the discharge valve, the motor and the fixture for the valve cover The electric motor unit and the compression mechanism unit are arranged to face each other so that the distance between the motor unit and the compression unit is 2 to 8 mm.
  • FIG. 1 is a diagram showing a refrigeration cycle apparatus according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing an upper valve cover of the rotary compressor in FIG. 1.
  • FIG. 3 is a longitudinal sectional view showing the upper valve cover of FIG.
  • FIG. 4 is a graph showing a state in which the peak value of electromagnetic noise moves to the higher operating frequency side as the natural frequency of the rotor and main shaft system of the rotary compressor in FIG. 1 increases.
  • FIG. 5 is a graph showing a state in which electromagnetic noise and resonance noise change according to the distance between the stator of the rotary compressor of FIG. 1 and the fixing bolt of the upper valve cover.
  • FIG. 6 is a graph showing the reduction rate of the maximum electromagnetic noise value that changes in accordance with the ratio of the rotor outer diameter and the spindle outer diameter of the rotary compressor of FIG.
  • Fig. 7 varies depending on the ratio between the main bearing length and the sub-bearing length of the rotary compressor in Fig. 1. It is a graph which shows the reduction rate of the electromagnetic noise maximum value which changes.
  • FIG. 1 shows a refrigeration cycle apparatus according to an embodiment of the present invention.
  • This refrigeration cycle apparatus is configured by sequentially connecting a condenser 101, an expansion device 102, and an evaporator 103 to a vertical rotary compressor 100 via a refrigerant pipe.
  • the vertical rotary compressor 100 includes a hermetic case 1, and the hermetic case 1 is driven through a rotary compression mechanism 2 and a main shaft 20 serving as a rotating shaft.
  • the motor unit 3 is housed in an airtight manner in the vertical direction.
  • the compression mechanism 2 covers the first cylinder 9 and the second cylinder 10 disposed above and below via the intermediate partition plate 11, and the openings of the first cylinder 9 and the second cylinder 10, and has a rotating shaft.
  • a main bearing 12 and a sub-bearing 13 that support the main shaft 20 are provided.
  • a roller 21 force S is provided to engage with the eccentric portion 20a of the main shaft 20, and the blade 22 abuts on the outer peripheral surface of the roller 21. Has been.
  • the main bearing 12 is provided with a discharge valve 12a
  • the auxiliary bearing 13 is provided with a discharge valve 13a.
  • An upper valve cover 14 as a valve cover is provided on the upper surface side of the main bearing 12 so as to cover the discharge valve 12a
  • a lower valve cover 15 is provided on the lower surface side of the auxiliary bearing 13 so as to cover the discharge valve 13a. Yes.
  • the upper valve cover 14 and the lower valve cover 15 are fixedly held on the main bearing 12 and the auxiliary bearing 13 by bolts 16 as fixing tools.
  • the electric motor unit 3 includes a rotor 5 and a stator 4.
  • the stator 4 is fixed and held on the inner wall surface of the sealed case 1, and the rotor 5 is fitted and fixed to the main shaft 20. A rotational force is applied to the rotor 5 when an electric current flows through the stator 4.
  • the stator 4 has a cylindrical stator core 4a provided with a plurality of axially extending slots on the inner peripheral surface, and magnetic pole teeth are formed between the slots of the stator core 4a.
  • a winding 7 is concentratedly wound around a tooth through a bobbin 6 which is an insulating member.
  • the rotor 5 includes a rotor core 5a having a shaft hole into which the main shaft 20 is fitted, and a permanent magnet made of a rare earth magnet such as samarium cobalt or neodymium monoiron boron provided in the rotor core 5a. And is composed of.
  • An accumulator 17 communicates with the compression chamber via a communication pipe 18 and regulates the amount of liquid back to the compressor.
  • the distance L is 8mm or less.
  • the generation of resonance noise is suppressed by securing an opening area with L ⁇ 2 mm.
  • FIG. 2 is a plan view showing the upper valve cover 14 described above, and FIG. 3 is a side sectional view thereof.
  • the upper valve cover 14 is formed in a cup shape, and the opening peripheral portion on the lower end side is the main bearing.
  • the upper surface portion of the bolt 16 of the upper valve cover 14 can be brought close to the lower end portion of the stator 4, and the distance L between the two can be made 8 mm or less.
  • the gas discharge hole 14a provided in the upper surface portion of the upper valve cover 14 can be positioned further upward, and the oil discharge amount is controlled by suppressing the disturbance of the oil surface in the sealed case 1. Is possible.
  • the refrigeration cycle apparatus may be a heat pump type air conditioner capable of cooling operation and heating operation.
  • the present invention is not limited to the above-described embodiments as they are, but can be embodied by modifying the constituent elements without departing from the spirit of the invention in the implementation stage.
  • Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some of all the components shown in the above-described embodiment are used. Some components may be deleted. Furthermore, the constituent elements in different embodiments may be appropriately combined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne un compresseur rotatif doté d'un boîtier hermétique (1) ; d'une section de moteur (3) disposée dans le boîtier hermétique (1) ; d'une section de mécanisme de compression (2) commandée par la section de moteur (3) par un arbre principal (20) pour éjecter un gaz comprimé depuis une valve d'éjection (12a) faisant face à la section de moteur (3) ; et d'un couvercle de valve supérieur (14) fixé à la section de mécanisme de compression (2) par un boulon (16) pour recouvrir la valve d'éjection (12a). La section de moteur (3) et la section de mécanisme de compression (2) sont disposées en face l'une de l'autre avec un intervalle de 2 à 8 mm entre la section de moteur (3) et le boulon (16) du couvercle de valve supérieur (14).
PCT/JP2007/072460 2006-11-22 2007-11-20 Compresseur rotatif et dispositif de cycle de réfrigération WO2008062789A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008545407A JPWO2008062789A1 (ja) 2006-11-22 2007-11-20 ロータリコンプレッサ、及び冷凍サイクル装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006315691 2006-11-22
JP2006-315691 2006-11-22

Publications (1)

Publication Number Publication Date
WO2008062789A1 true WO2008062789A1 (fr) 2008-05-29

Family

ID=39429719

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/072460 WO2008062789A1 (fr) 2006-11-22 2007-11-20 Compresseur rotatif et dispositif de cycle de réfrigération

Country Status (3)

Country Link
JP (1) JPWO2008062789A1 (fr)
CN (1) CN101529098A (fr)
WO (1) WO2008062789A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102345676A (zh) * 2010-07-23 2012-02-08 Lg电子株式会社 衬套轴承及其制造方法和具有衬套轴承的封闭式压缩机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110114367A (ko) * 2010-04-13 2011-10-19 엘지전자 주식회사 밀폐형 압축기
JP6037563B2 (ja) * 2013-03-22 2016-12-07 東芝キヤリア株式会社 多気筒回転式圧縮機及び冷凍サイクル装置
CN105114317B (zh) * 2015-09-24 2017-05-31 广东美芝制冷设备有限公司 旋转式压缩机
CN106321617B (zh) * 2016-10-26 2023-10-31 上海海立电器有限公司 曲轴以及旋转式压缩机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004113731A1 (fr) * 2003-06-20 2004-12-29 Toshiba Carrier Corporation Compresseur integre de type rotatif et appareil a cycle de refrigeration
JP2005256614A (ja) * 2004-03-09 2005-09-22 Toshiba Kyaria Kk 多シリンダ形ロータリ圧縮機
US20060073034A1 (en) * 2004-09-29 2006-04-06 Kazuya Sato Compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004113731A1 (fr) * 2003-06-20 2004-12-29 Toshiba Carrier Corporation Compresseur integre de type rotatif et appareil a cycle de refrigeration
JP2005256614A (ja) * 2004-03-09 2005-09-22 Toshiba Kyaria Kk 多シリンダ形ロータリ圧縮機
US20060073034A1 (en) * 2004-09-29 2006-04-06 Kazuya Sato Compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102345676A (zh) * 2010-07-23 2012-02-08 Lg电子株式会社 衬套轴承及其制造方法和具有衬套轴承的封闭式压缩机
US9057365B2 (en) 2010-07-23 2015-06-16 Lg Electronics Inc. Bush bearing fabricating method thereof and hermetic compressor having the same

Also Published As

Publication number Publication date
CN101529098A (zh) 2009-09-09
JPWO2008062789A1 (ja) 2010-03-04

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