JP6091616B2 - 冷凍サイクル装置 - Google Patents
冷凍サイクル装置 Download PDFInfo
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- JP6091616B2 JP6091616B2 JP2015524933A JP2015524933A JP6091616B2 JP 6091616 B2 JP6091616 B2 JP 6091616B2 JP 2015524933 A JP2015524933 A JP 2015524933A JP 2015524933 A JP2015524933 A JP 2015524933A JP 6091616 B2 JP6091616 B2 JP 6091616B2
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- Prior art keywords
- refrigerant
- compressor
- dryness
- refrigeration cycle
- temperature
- Prior art date
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- 238000005057 refrigeration Methods 0.000 title claims description 30
- 239000003507 refrigerant Substances 0.000 claims description 112
- 238000002347 injection Methods 0.000 claims description 85
- 239000007924 injection Substances 0.000 claims description 85
- 230000007423 decrease Effects 0.000 description 23
- 238000007906 compression Methods 0.000 description 19
- 230000006835 compression Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2101—Temperatures in a bypass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
- Compressor (AREA)
Description
h=Cp・T ・・・(5)
(Δh=Cp・ΔT)
R404A冷媒を用いた場合の挙動を図3で示すと、インジェクション量Ginjの増加は合流部2aの乾き度低下となり、圧縮機入力の増加はCOPの低下となる。圧縮機(吐出ガス温度)の信頼性の制約で定まる乾き度より高い状態で運転できないため、同時にCOPが定まる。
Claims (5)
- 圧縮機、凝縮器、膨張弁、蒸発器を順に接続した冷凍サイクルが形成された冷凍サイクル装置であって、
前記凝縮器と前記膨張弁との間から前記圧縮機内へ冷媒が流れるインジェクション配管と、
前記インジェクション配管に配置され、前記インジェクション配管から前記圧縮機内へ流れる冷媒のインジェクション量を調整する流量調整器と、
前記流量調整器の開度制御を行う制御装置と、
前記圧縮機の吐出側における冷媒の吐出温度を検出する吐出温度センサと、
前記インジェクション配管を流れる冷媒の中間温度を検出する中間温度センサと、
前記圧縮機の吸入側における冷媒の吸入圧力を検出する吸入圧力センサと、
前記圧縮機の吐出側における冷媒の吐出圧力を検出する吐出圧力センサと
を備え、
冷媒のポリトロープ指数は、1.28以上であり、
前記制御装置は、
前記吐出温度、前記中間温度、前記吸入圧力、前記吐出圧力及び前記圧縮機の運転周波数を用いて、前記圧縮機の吸入側から吸入された冷媒と前記インジェクション配管から供給された冷媒との合流部における乾き度を算出する乾き度算出手段と、
前記乾き度算出手段により算出された乾き度が1以上になるように前記流量調整器の開度を制御する開度調整手段と、を備える
ことを特徴とする冷凍サイクル装置。 - 前記開度調整手段は、前記圧縮機の吸入側から吸入された冷媒と前記インジェクション配管から供給された冷媒との合流部の乾き度を1から1.1の間になるように、前記流量調整器の開度を制御するものであることを特徴とする請求項1に記載の冷凍サイクル装置。
- 冷媒の比熱比は、1.2以上であることを特徴とする請求項1または2に記載の冷凍サイクル装置。
- 冷媒は、R32冷媒の単一冷媒もしくはR32冷媒を含む混合冷媒であることを特徴とする請求項1〜3のいずれか1項に記載の冷凍サイクル装置。
- 前記圧縮機の吸入側における冷媒の吸入温度を検出する吸入温度センサをさらに有し、
前記乾き度算出手段は、さらに前記吸入温度を用いて前記合流部における乾き度を算出することを特徴とする請求項1〜4のいずれか1項に記載の冷凍サイクル装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2013/068103 WO2015001613A1 (ja) | 2013-07-02 | 2013-07-02 | 冷凍サイクル装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2015001613A1 JPWO2015001613A1 (ja) | 2017-02-23 |
JP6091616B2 true JP6091616B2 (ja) | 2017-03-08 |
Family
ID=52143236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015524933A Active JP6091616B2 (ja) | 2013-07-02 | 2013-07-02 | 冷凍サイクル装置 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6091616B2 (ja) |
DE (1) | DE112013007202T5 (ja) |
GB (1) | GB2530453B (ja) |
WO (1) | WO2015001613A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180137800A (ko) * | 2017-06-19 | 2018-12-28 | 엘지전자 주식회사 | 공기조화기 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106247573B (zh) * | 2016-09-27 | 2019-05-31 | 广东美的暖通设备有限公司 | 空调器及其压缩机回液判断方法和装置 |
JP6727420B2 (ja) | 2017-04-24 | 2020-07-22 | 三菱電機株式会社 | 空気調和装置 |
JP7400857B2 (ja) * | 2022-03-30 | 2023-12-19 | 株式会社富士通ゼネラル | 空気調和機 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10325622A (ja) * | 1997-03-26 | 1998-12-08 | Mitsubishi Electric Corp | 冷凍サイクル装置 |
JP4675927B2 (ja) * | 2007-03-30 | 2011-04-27 | 三菱電機株式会社 | 空気調和装置 |
JP2010216687A (ja) * | 2009-03-13 | 2010-09-30 | Daikin Ind Ltd | ヒートポンプシステム |
JP4864110B2 (ja) * | 2009-03-25 | 2012-02-01 | 三菱電機株式会社 | 冷凍空調装置 |
WO2012104890A1 (ja) * | 2011-01-31 | 2012-08-09 | 三菱電機株式会社 | 空気調和装置 |
JP5642278B2 (ja) * | 2011-06-29 | 2014-12-17 | 三菱電機株式会社 | 空気調和装置 |
-
2013
- 2013-07-02 WO PCT/JP2013/068103 patent/WO2015001613A1/ja active Application Filing
- 2013-07-02 DE DE112013007202.5T patent/DE112013007202T5/de active Pending
- 2013-07-02 JP JP2015524933A patent/JP6091616B2/ja active Active
- 2013-07-02 GB GB1522798.6A patent/GB2530453B/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180137800A (ko) * | 2017-06-19 | 2018-12-28 | 엘지전자 주식회사 | 공기조화기 |
KR102350935B1 (ko) * | 2017-06-19 | 2022-01-12 | 엘지전자 주식회사 | 공기조화기 |
Also Published As
Publication number | Publication date |
---|---|
WO2015001613A1 (ja) | 2015-01-08 |
DE112013007202T5 (de) | 2016-03-17 |
GB2530453B (en) | 2018-02-14 |
JPWO2015001613A1 (ja) | 2017-02-23 |
GB201522798D0 (en) | 2016-02-03 |
GB2530453A (en) | 2016-03-23 |
GB2530453A9 (en) | 2017-09-06 |
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