WO2017130321A1 - Compresseur - Google Patents

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Publication number
WO2017130321A1
WO2017130321A1 PCT/JP2016/052315 JP2016052315W WO2017130321A1 WO 2017130321 A1 WO2017130321 A1 WO 2017130321A1 JP 2016052315 W JP2016052315 W JP 2016052315W WO 2017130321 A1 WO2017130321 A1 WO 2017130321A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealed container
compressor
electrode
oil
airtight container
Prior art date
Application number
PCT/JP2016/052315
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　幸一
茗ヶ原　将史
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/052315 priority Critical patent/WO2017130321A1/fr
Priority to KR1020187017598A priority patent/KR102044315B1/ko
Priority to CN201680078436.XA priority patent/CN108474369A/zh
Priority to JP2017563452A priority patent/JPWO2017130321A1/ja
Publication of WO2017130321A1 publication Critical patent/WO2017130321A1/fr

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields

Definitions

  • the present invention relates to a compressor that is used in a refrigeration cycle of a refrigerating and air-conditioning apparatus such as an air conditioner or a freezer and compresses refrigerant gas.
  • a compressor that compresses refrigerant gas is used in a refrigeration cycle of a refrigeration air conditioner such as an air conditioner or a freezer.
  • a refrigeration air conditioner such as an air conditioner or a freezer.
  • it is necessary to supply sufficient refrigerating machine oil to the compression mechanism that compresses the refrigerant to ensure a good lubrication state.
  • the compressor cannot completely seal the gaps with respect to the respective sections and bearings of the compression mechanism section, and refrigerant gas leaks out of the compression chamber, causing refrigeration. This causes a decrease in the refrigerating capacity of the air conditioner.
  • the compressor cannot secure fluid lubrication, and the shaft and the bearings may be in fixed contact, and may become inoperable due to abnormal wear and seizure. .
  • Compressor needs to secure a sufficient amount of refrigerating machine oil stored in a closed container in order to supply sufficient refrigerating machine oil to the compression mechanism.
  • the compressor when the compressor is incorporated in a refrigeration circuit, for example, when starting or operating at a high flow rate, the refrigeration oil is taken out of the sealed container by the refrigerant gas. For this reason, the compressor may not be able to supply sufficient refrigerating machine oil to the compression mechanism unit and the bearing due to a shortage of oil.
  • the compressor disclosed in Patent Document 1 below has a configuration in which a pair of terminals and a pair of electrodes are installed in the normal direction of the inner surface of the sealed container.
  • the concentration of the refrigerating machine oil in the sealed container is measured by detecting the capacitance between the pair of electrodes, the operation of the refrigerant circuit is controlled based on the measured value, and the refrigerating machine oil is contained in the compressor. The operation is such that the operation returns.
  • Patent Document 1 has a configuration in which a pair of electrodes is provided in a hermetic container. Therefore, there is a problem that the number of parts increases, the structure becomes complicated, and the manufacturing cost increases.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a compressor capable of measuring the amount of refrigeration oil by detecting the capacitance with an inexpensive and simple configuration. To do.
  • the compressor according to the present invention is provided with a sealed container, a compression mechanism for compressing a refrigerant gas in the sealed container, and an interior and exterior of the sealed container that are electrically insulated from the sealed container.
  • a connection terminal is electrically and mechanically connected to the connection terminal in the sealed container, and is installed with an electrode surface facing the inner surface of the sealed container. The electrode surface and the inner surface of the sealed container And an electrode for generating a capacitance between them.
  • the compressor of the present invention has a simple configuration with one connection terminal and one electrode, and can detect the capacitance and measure the amount of refrigeration oil. Costs can be reduced and the economic effect is excellent.
  • FIG. 1 is a longitudinal sectional view of a compressor according to an embodiment of the present invention.
  • FIG. 2 is an enlarged view of part A indicated in FIG.
  • the compressor 100 of the present embodiment shown in FIG. 1 shows a rotary compressor as an example.
  • the compressor 100 includes a refrigerant circuit that sequentially connects the compressor 100, a four-way valve, an indoor heat exchanger, an expansion valve, an outdoor heat exchanger, an accumulator 12, and the like through piping, and circulates the enclosed refrigerant. It is used for a refrigeration cycle of a refrigeration air conditioner such as an air conditioner or a freezer.
  • an electric motor 2 including a stator 2a and a rotor 2b and a compression mechanism unit 3 driven by the electric motor 2 are housed in a sealed container 1 in a high-pressure atmosphere.
  • a refrigerating machine oil 15 that mainly lubricates sliding of the compression mechanism 3 is stored at the bottom of the sealed container 1.
  • a suction connection pipe 10 communicating with an accumulator 12 is connected to a compression mechanism unit 3 in the hermetic container 1, and low-pressure and high-temperature gas refrigerant is taken into the compression chamber of the compression mechanism unit 3 from the accumulator 12.
  • the compressor 100 has a discharge pipe 11 connected to the upper part of the hermetic container 1, and a gas refrigerant compressed to a high pressure and a high temperature is discharged from the discharge pipe 11.
  • the electric motor 2 includes a stator 2a fixed in the hermetic container 1, and a rotor 2b that is rotatably attached to the stator 2a and is driven to rotate by energizing the stator 2a. Power is supplied from the outside through an airtight terminal to drive.
  • a crankshaft 4 is shrink fitted on the rotor 2b, and a compression mechanism 3 is connected via the crankshaft 4. That is, the rotational force of the electric motor 2 is transmitted to the compression mechanism unit 3 via the crankshaft 4.
  • the crankshaft 4 is formed between a main shaft 4a fixed to the rotor 2b of the electric motor 2, a sub shaft 4b provided on the opposite side of the main shaft 4a across the compression mechanism portion 3, and the main shaft 4a and the sub shaft 4b. And the eccentric portion 4c.
  • the crankshaft 4 has an oil supply hole that opens in the bottom direction of the hermetic container 1, and a helical centrifugal pump is provided in the oil supply hole so as to be sealed.
  • the refrigerating machine oil 15 stored at the bottom of the container 1 is pumped up and supplied to the compression mechanism unit 3.
  • the main shaft 4a of the crankshaft 4 is provided with a main bearing 5 that rotatably supports the main shaft 4a, and is fitted with a clearance for sliding.
  • the auxiliary shaft 4b of the crankshaft 4 is provided with an auxiliary bearing 6 that rotatably supports the auxiliary shaft 4b, and is fitted with a clearance for sliding.
  • the compression mechanism unit 3 includes a cylinder 7 that forms a compression chamber, and a piston 8 that is rotatably fitted to the eccentric portion 4c of the crankshaft 4 in the compression chamber. It is stored in.
  • the cylinder 7 has a cylindrical inner space as a compression chamber, and a piston 8 that is rotatably fitted to the eccentric portion 4c of the crankshaft 4 is disposed in the inner space.
  • the outer peripheral surface is fixed to.
  • the cylinder 7 is provided with a vane (not shown) that partitions the compression chamber into a suction chamber and a discharge chamber, and gas refrigerant is sucked into the suction chamber from the accumulator 12 through the suction connecting pipe 10.
  • the hermetic container 1 is provided with a mounting plate 16 in a high pressure region in which the refrigerating machine oil 15 is stored.
  • a single connection terminal 13 that is electrically insulated from the sealed container 1 is provided on the mounting plate 16 so as to penetrate the outside and the inside of the sealed container 1.
  • One electrode 14 is electrically and mechanically connected to the connection terminal 13 at the inner end of the sealed container 1.
  • the electrode 14 has a flat plate shape and has an electrode surface facing the inner surface of the sealed container 1, and generates a capacitance between the electrode surface and the inner surface of the sealed container 1.
  • the electrode 14 shows a state in which the electrode surface is parallel to the inner surface of the sealed container 1, but the electrode surface may be opposed to the inner surface of the sealed container 1, and is not necessarily parallel. It is not limited to the state of letting it go.
  • the shape of the electrode 14 is not limited to a flat plate shape, and may be, for example, a rod shape, and is implemented in various shapes depending on the implementation status.
  • the conventional compressor has a configuration in which a pair of electrodes are installed in the normal direction of the sealed container, if the electrodes are made large in order to ensure the sensitivity of capacitance detection, the amount of the electrodes protruding toward the inside of the container increases. Become. Therefore, there is a possibility that the electrode may interfere with the compression element or the motor element, and there is a restriction on the expansion of the electrode.
  • the container of the compressor is enlarged to provide a space so that the electrodes do not interfere with the compression element or the motor element, or a dedicated space protruding toward the outside of the container is provided. There is a need for.
  • the configuration of the compression element and the like can be achieved even when the large electrode 14 is used. There is no possibility of interference with the member. Therefore, without increasing the size of the container of the compressor 100 or providing a dedicated space, the sensitivity of detecting the capacitance of the electrode 14 is increased, and the measurement accuracy of the oil level of the refrigerator oil 15 is increased. Safety and reliability can be improved.
  • An oil amount measuring device 17 is provided outside the sealed container 1 for detecting the electrostatic capacity connected to the sealed container 1 and the connection terminal 13 and measuring the oil level height of the refrigerating machine oil 15 based on the detected value. It has been.
  • a controller 9 that controls the operation of the compressor 100 based on the measured value measured by the oil amount measuring device 17 is provided outside the sealed container 1.
  • the eccentric part 4c of the crankshaft 4 rotates eccentrically with the main shaft 4a, and the piston 8 fitted to the eccentric part 4c makes the outer peripheral surface of the piston 8 contact the inner peripheral surface of the compression chamber.
  • vanes are provided on both side surfaces and are held by bushes (not shown) to move forward and backward.
  • the compressor 100 sucks the low-pressure refrigerant from the suction connection pipe 10 into the suction chamber, compresses the refrigerant to a predetermined pressure in the discharge chamber, changes the valve of the discharge pipe 11 to the open state, and increases the pressure from the discharge hole.
  • the gas refrigerant is discharged and sent to the refrigeration cycle of the refrigeration air conditioner.
  • the compressor 100 of the present embodiment has a shortage of oil level due to the fact that the refrigerating machine oil 15 is taken out of the sealed container 1 by the refrigerant gas at the time of start-up or high-flow operation, for example.
  • the oil amount measuring device 17 can detect the capacitance that changes due to the absence of the refrigeration oil 15 between the sealed container 1 and the electrode 14.
  • the compressor 100 performs control to stop the operation of the compressor 100 based on the measured value of the oil level height of the refrigerating machine oil 15 measured based on the detected value, so that an accident that damages the compressor 100 is performed. Can be prevented in advance.
  • the amount of the refrigerating machine oil 15 in the hermetic container can be recovered by controlling the operating state of the refrigerating circuit so that the refrigerating machine oil 15 easily returns to the compressor 100.
  • the compressor 100 can maintain high efficiency that does not cause a decrease in the refrigeration capacity of the refrigeration air conditioner due to refrigerant gas leakage, and reliability that does not cause abnormal wear and seizure of the bearing. .
  • the compressor 100 since the compressor 100 has a simple configuration with one connection terminal 13 and one electrode 14, the material cost and processing cost required for manufacturing compared to a conventional refrigeration apparatus configured with a pair of electrodes can be reduced. It can be suppressed and has excellent economic effects.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

Le problème posé par l'invention consiste à fournir un compresseur apte à détecter la capacité et à mesurer la quantité d'une huile de réfrigérateur à faible coût et avec une configuration simple. La solution selon l'invention porte sur un compresseur comprenant : un conteneur étanche à l'air ; une unité mécanisme de compression qui comprime un gaz frigorigène dans le conteneur étanche à l'air ; une borne de connexion, qui est prévue pour pénétrer dans le conteneur étanche à l'air depuis l'intérieur vers l'extérieur et qui est électriquement isolée du conteneur étanche à l'air ; et une électrode, qui est électriquement et mécaniquement connectée à la borne de connexion dans le conteneur étanche à l'air et qui est disposée en ayant une surface d'électrode faisant face à la surface interne du conteneur étanche à l'air, ladite électrode produisant une capacité entre la surface d'électrode et la surface interne du conteneur étanche à l'air.
PCT/JP2016/052315 2016-01-27 2016-01-27 Compresseur WO2017130321A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2016/052315 WO2017130321A1 (fr) 2016-01-27 2016-01-27 Compresseur
KR1020187017598A KR102044315B1 (ko) 2016-01-27 2016-01-27 압축기
CN201680078436.XA CN108474369A (zh) 2016-01-27 2016-01-27 压缩机
JP2017563452A JPWO2017130321A1 (ja) 2016-01-27 2016-01-27 圧縮機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/052315 WO2017130321A1 (fr) 2016-01-27 2016-01-27 Compresseur

Publications (1)

Publication Number Publication Date
WO2017130321A1 true WO2017130321A1 (fr) 2017-08-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/052315 WO2017130321A1 (fr) 2016-01-27 2016-01-27 Compresseur

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JP (1) JPWO2017130321A1 (fr)
KR (1) KR102044315B1 (fr)
CN (1) CN108474369A (fr)
WO (1) WO2017130321A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020105918A (ja) * 2018-12-26 2020-07-09 三菱重工サーマルシステムズ株式会社 冷凍機用圧縮機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102244912B1 (ko) 2018-07-25 2021-04-26 주식회사 엘지화학 고분자 전해질 및 이의 제조방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187326U (fr) * 1984-11-14 1986-06-07
JPS6296528U (fr) * 1985-12-05 1987-06-19
JP2002317785A (ja) * 2001-04-25 2002-10-31 Mitsubishi Electric Corp 冷凍装置、及び冷媒圧縮機
US20150168200A1 (en) * 2013-12-18 2015-06-18 Samsung Electronics Co., Ltd. Oil detection device, compressor having the same and method of controlling the compressor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2772030B2 (ja) 1989-04-28 1998-07-02 株式会社東芝 コンプレッサ
JPH03225090A (ja) * 1990-01-31 1991-10-04 Toshiba Corp 圧縮機
KR101452767B1 (ko) * 2010-04-01 2014-10-21 엘지전자 주식회사 압축기의 오일 레벨 감지수단
CN103114986A (zh) * 2013-02-26 2013-05-22 苏州英华特制冷设备技术有限公司 一种压缩机的油位检测装置
KR20150056317A (ko) * 2013-11-15 2015-05-26 삼성전자주식회사 오일 레벨 감지 장치
CN106163392B (zh) * 2014-05-01 2020-04-21 圣犹达医疗用品心脏病学部门有限公司 描绘力

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187326U (fr) * 1984-11-14 1986-06-07
JPS6296528U (fr) * 1985-12-05 1987-06-19
JP2002317785A (ja) * 2001-04-25 2002-10-31 Mitsubishi Electric Corp 冷凍装置、及び冷媒圧縮機
US20150168200A1 (en) * 2013-12-18 2015-06-18 Samsung Electronics Co., Ltd. Oil detection device, compressor having the same and method of controlling the compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020105918A (ja) * 2018-12-26 2020-07-09 三菱重工サーマルシステムズ株式会社 冷凍機用圧縮機
JP7406916B2 (ja) 2018-12-26 2023-12-28 三菱重工サーマルシステムズ株式会社 冷凍機用圧縮機

Also Published As

Publication number Publication date
KR20180086460A (ko) 2018-07-31
JPWO2017130321A1 (ja) 2018-08-30
CN108474369A (zh) 2018-08-31
KR102044315B1 (ko) 2019-11-13

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