JP5655014B2 - 空気調和機 - Google Patents
空気調和機 Download PDFInfo
- Publication number
- JP5655014B2 JP5655014B2 JP2011553917A JP2011553917A JP5655014B2 JP 5655014 B2 JP5655014 B2 JP 5655014B2 JP 2011553917 A JP2011553917 A JP 2011553917A JP 2011553917 A JP2011553917 A JP 2011553917A JP 5655014 B2 JP5655014 B2 JP 5655014B2
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- Prior art keywords
- oil
- pipe
- compressor
- lubricating oil
- compressors
- 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.)
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- 239000003921 oil Substances 0.000 claims description 164
- 239000003507 refrigerant Substances 0.000 claims description 110
- 239000010687 lubricating oil Substances 0.000 claims description 63
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/30—Refrigerant piping for use inside the separate outdoor units
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- 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
- F25B13/00—Compression machines, plants or systems, with 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
- F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- 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
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Compressor (AREA)
- Other Air-Conditioning Systems (AREA)
Description
上記液管20は端末部において複数本に分岐され、各室内機2A〜2D内に備えられる室内熱交換器23a〜23dに対して、それぞれ膨張弁24a〜24dを介して接続される。上記ガス管21も端末部において複数本に分岐され、各室内機2A〜2D内の上記室内熱交換器23a〜23dに接続される。
なお、室外機1に備えられる室外熱交換器9a、9bに対向して室外ファン25が配置され、上記第1〜第3の圧縮機3a〜3c等とともにリモコン(図示しない)と電気的に接続される室外制御部によって運転を制御される。
各室内機2A〜2Dに備えられる室内熱交換器23a〜23dに対向して室内ファン26a〜26dが配置される。これら室内ファン26a〜26dは、上記リモコンに対する運転操作によって駆動制御される。
第1の圧縮機3aのケース側面における所定の高さ位置に第1の均油管30aの一端が接続され、この均油管30aの他端は油溜め管体31に接続される。第1の均油管30aには、逆止弁32aとキャピラリーチューブ33aが設けられ、このキャピラリーチューブ33aの下流側に第1の温度センサ34が設けられる。
上記均油案内管40は、第1の電磁開閉弁42を介して後述するディストリビュータ43の流入口に接続される。油溜め管体31と第1の電磁開閉弁42との間における均油案内管40には第5の温度センサ44が設けられる。
上記第1の油導出管51には、キャピラリーチューブと第3の電磁開閉弁53が設けられ、均油案内管40における第1の電磁開閉弁42とディストリビュータ43との間に接続される。第2の油導出管52には、キャピラリーチューブのみが設けられ、均油案内管40における油溜め管体31と第1の電磁開閉弁42との間に接続される。
以上で、均油回路が構成される。
第1〜第3の圧縮機3a〜3cが駆動されると、それぞれの圧縮機3a〜3cから吐出される高温高圧のガス冷媒が、それぞれに接続される吐出冷媒管4a〜4cを介して冷媒管6に導かれる。そして、ガス冷媒は冷媒管6によりオイルセパレータ7に供給され、ここでガス冷媒に含まれる潤滑油分が分離される。
第1〜第3の圧縮機3a〜3cの各密閉ケース内に潤滑油が貯溜されているが、この油面高さが、それぞれの側部に接続された第1〜第3の均油管30a〜30cの接続位置よりも高い場合がある。
すなわち、上記ディストリビュータ43では、分配側の2次側配管が第1〜第3の吸込み冷媒管18a〜18cに接続され、第1〜第3の圧縮機3a〜3cの極く近い位置に設けられることになる。
しかしながら、上述したようにディストリビュータ43を水平姿勢にして主吸込み冷媒管16に取付け固定することで、同一振動系となり配管疲労破壊を防止できる。
例えば、第1の圧縮機3aと、第2の圧縮機3bが運転し、第3の圧縮機3cが運転を停止している。このときは、ディストリビュータ43から第1の油戻し管55介して第1の圧縮機3aへ戻される潤滑油の量と、第2の油戻し管56を介して第2の圧縮機3bへ戻される潤滑油の量が同量である。
すなわち、3台あるうちの真ん中の圧縮機3bに連通する第2の油戻し管56に油還流遮断弁58を備え、上記状況下で閉成制御する。図3に示したように、ディストリビュータ43の第1の流出口Rfと第3の流出口Rhとは略同じ高さに位置していることから、第1の油戻し管55と第3の油戻し管57へは略同量の潤滑油が流入する。すなわち、第1の圧縮機3aと、第2の圧縮機3bとに同量ずつの潤滑油が還流され、互いに潤滑油の過不足の発生がない。
例えば、油還流遮断弁58を閉成している間に、第2の圧縮機3bが油不足に陥る場合がある。油不足は、バイパス管38に設けられる第4の温度センサ39と、第1〜第3の均油管30a〜30cに設けられる第1〜第3の温度センサ35〜37との検知温度の比較から知ることができる。
Claims (2)
- 並列に接続される複数の圧縮機を備えた室外機と、複数の室内機とで冷凍サイクルを構成する空気調和機において、
それぞれの上記圧縮機内に規定量以上溜まった潤滑油を取出す均油管と、
これら均油管から潤滑油分を導き、複数の流路に分配するディストリビュータと、
このディストリビュータの分配流路と各圧縮機の冷媒吸込み管とを連通し、それぞれの圧縮機へ潤滑油を戻す油戻し管とを具備し、
上記ディストリビュータは、上記複数の圧縮機に接続される冷媒吸込み管の水平部分に配管固定具を介して、水平姿勢にして上記冷媒吸込み管に取付け固定される
ことを特徴とする空気調和機。 - 上記圧縮機は3台、並列に備えられ、
最も潤滑油が流入し易い上記油戻し管に、油還流遮断弁が開閉自在に設けられる
ことを特徴とする請求項1記載の空気調和機。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011553917A JP5655014B2 (ja) | 2010-02-15 | 2011-02-15 | 空気調和機 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010030526 | 2010-02-15 | ||
JP2010030526 | 2010-02-15 | ||
PCT/JP2011/053165 WO2011099628A1 (ja) | 2010-02-15 | 2011-02-15 | 空気調和機 |
JP2011553917A JP5655014B2 (ja) | 2010-02-15 | 2011-02-15 | 空気調和機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2011099628A1 JPWO2011099628A1 (ja) | 2013-06-17 |
JP5655014B2 true JP5655014B2 (ja) | 2015-01-14 |
Family
ID=44367891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011553917A Active JP5655014B2 (ja) | 2010-02-15 | 2011-02-15 | 空気調和機 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120304685A1 (ja) |
EP (1) | EP2538155B1 (ja) |
JP (1) | JP5655014B2 (ja) |
CN (1) | CN102753913B (ja) |
WO (1) | WO2011099628A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014046236A1 (ja) | 2012-09-21 | 2014-03-27 | 東芝キヤリア株式会社 | マルチ型空気調和装置の室外ユニット |
CN105579787B (zh) * | 2013-09-24 | 2018-01-05 | 三菱电机株式会社 | 冷冻循环装置 |
KR102165351B1 (ko) * | 2014-02-05 | 2020-10-13 | 엘지전자 주식회사 | 히트펌프 시스템 |
KR101622846B1 (ko) * | 2014-10-27 | 2016-05-19 | 엘지전자 주식회사 | 오일분리기 및 이를 구비한 공기조화기 |
CN104990307B (zh) * | 2015-08-05 | 2017-11-17 | 珠海格力电器股份有限公司 | 空调器、压缩模块及压缩模块组 |
CN105180493B (zh) * | 2015-09-01 | 2019-12-24 | 珠海格力电器股份有限公司 | 压缩机模块及多模块机组、多模块机组均油控制方法 |
US9939179B2 (en) * | 2015-12-08 | 2018-04-10 | Bitzer Kuehlmaschinenbau Gmbh | Cascading oil distribution system |
US20180195794A1 (en) | 2017-01-12 | 2018-07-12 | Emerson Climate Technologies, Inc. | Diagnostics And Control For Micro Booster Supermarket Refrigeration System |
JP7477431B2 (ja) | 2020-11-18 | 2024-05-01 | 三菱重工サーマルシステムズ株式会社 | 冷凍装置 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07234039A (ja) * | 1994-02-25 | 1995-09-05 | Hitachi Ltd | 空気調和機 |
JPH085169A (ja) * | 1994-06-21 | 1996-01-12 | Matsushita Refrig Co Ltd | 空気調和機 |
JP2000065445A (ja) * | 1998-08-20 | 2000-03-03 | Daikin Ind Ltd | 冷媒分流機構及び冷媒分流機構を備えた熱交換器 |
JP2000274885A (ja) * | 1999-03-25 | 2000-10-06 | Sharp Corp | 分岐管及び分岐管を備えた空気調和機 |
WO2004076945A1 (ja) * | 2003-02-27 | 2004-09-10 | Toshiba Carrier Corporation | 冷凍サイクル装置 |
JP2006112668A (ja) * | 2004-10-12 | 2006-04-27 | Fujitsu General Ltd | 多室型空気調和機の室外機 |
JP2006125699A (ja) * | 2004-10-27 | 2006-05-18 | Mitsubishi Electric Corp | 空気調和機の室外機 |
JP2006145054A (ja) * | 2004-11-16 | 2006-06-08 | Matsushita Electric Ind Co Ltd | 冷蔵庫 |
JP2006250435A (ja) * | 2005-03-10 | 2006-09-21 | Yanmar Co Ltd | エンジン駆動式ヒートポンプ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3581519A (en) * | 1969-07-18 | 1971-06-01 | Emhart Corp | Oil equalization system |
JP4108957B2 (ja) * | 2001-10-19 | 2008-06-25 | 東芝キヤリア株式会社 | 冷凍装置 |
US8091839B2 (en) * | 2004-08-23 | 2012-01-10 | Thomas & Betts International, Inc. | Scissor type pipe clamp |
KR100758901B1 (ko) * | 2004-11-17 | 2007-09-14 | 엘지전자 주식회사 | 멀티형 공기조화기 |
-
2011
- 2011-02-15 WO PCT/JP2011/053165 patent/WO2011099628A1/ja active Application Filing
- 2011-02-15 CN CN201180009458.8A patent/CN102753913B/zh active Active
- 2011-02-15 EP EP11742367.3A patent/EP2538155B1/en active Active
- 2011-02-15 JP JP2011553917A patent/JP5655014B2/ja active Active
-
2012
- 2012-08-13 US US13/572,948 patent/US20120304685A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07234039A (ja) * | 1994-02-25 | 1995-09-05 | Hitachi Ltd | 空気調和機 |
JPH085169A (ja) * | 1994-06-21 | 1996-01-12 | Matsushita Refrig Co Ltd | 空気調和機 |
JP2000065445A (ja) * | 1998-08-20 | 2000-03-03 | Daikin Ind Ltd | 冷媒分流機構及び冷媒分流機構を備えた熱交換器 |
JP2000274885A (ja) * | 1999-03-25 | 2000-10-06 | Sharp Corp | 分岐管及び分岐管を備えた空気調和機 |
WO2004076945A1 (ja) * | 2003-02-27 | 2004-09-10 | Toshiba Carrier Corporation | 冷凍サイクル装置 |
JP2006112668A (ja) * | 2004-10-12 | 2006-04-27 | Fujitsu General Ltd | 多室型空気調和機の室外機 |
JP2006125699A (ja) * | 2004-10-27 | 2006-05-18 | Mitsubishi Electric Corp | 空気調和機の室外機 |
JP2006145054A (ja) * | 2004-11-16 | 2006-06-08 | Matsushita Electric Ind Co Ltd | 冷蔵庫 |
JP2006250435A (ja) * | 2005-03-10 | 2006-09-21 | Yanmar Co Ltd | エンジン駆動式ヒートポンプ |
Also Published As
Publication number | Publication date |
---|---|
WO2011099628A1 (ja) | 2011-08-18 |
EP2538155A1 (en) | 2012-12-26 |
CN102753913A (zh) | 2012-10-24 |
JPWO2011099628A1 (ja) | 2013-06-17 |
US20120304685A1 (en) | 2012-12-06 |
CN102753913B (zh) | 2015-10-21 |
EP2538155A4 (en) | 2018-04-04 |
EP2538155B1 (en) | 2023-07-19 |
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