JP2008025932A - 空気調和機の制御方法 - Google Patents
空気調和機の制御方法 Download PDFInfo
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- JP2008025932A JP2008025932A JP2006200354A JP2006200354A JP2008025932A JP 2008025932 A JP2008025932 A JP 2008025932A JP 2006200354 A JP2006200354 A JP 2006200354A JP 2006200354 A JP2006200354 A JP 2006200354A JP 2008025932 A JP2008025932 A JP 2008025932A
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- temperature
- heat exchanger
- control
- expansion valve
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- 238000000034 method Methods 0.000 title claims description 35
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 230000007423 decrease Effects 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 abstract description 28
- 238000013461 design Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000012360 testing method Methods 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
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/027—Condenser control 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
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
-
- 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
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
-
- 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
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
-
- 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
- F25B2600/2513—Expansion 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
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
- F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
【解決手段】低外気温下での冷房運転時には、室外熱交換器の温度Teと室内熱交換器の温度Tiとの温度差Tx(=Te−Ti)があらかじめ設定された所定範囲内に納まるように、膨張弁の開度および/または室外熱交換器の室外ファンの回転数を制御する。具体的には、最初に室外ファンの回転数を通常の冷房運転時よりも所定に下げた状態で、膨張弁の開度を調整し、次に膨張弁の開度を固定し、室外ファンの回転数を調整してTxがほぼ一定となるように制御する。
【選択図】図5
Description
(1)Tx<0となる場合;室内熱交換器15が過剰に過熱してしまうと、Teが低下し外気温(室温以下)に近づき、一方Tiは上昇し室温に近づく。その結果、Tx=Te−Ti<0になってしまうため、Tx<0となった場合には過剰過熱として判断し、Tx制御NGとする。
12 四方弁
13 室外熱交換器
13a 室外ファン
13b 室外熱交換器用温度センサ
14 膨張弁
15 室内熱交換器
15a 室内ファン
15b 室内熱交換器用温度センサ
130 室外機制御部
136 電子膨張弁制御部
150 室内機制御部
155 外気温度判定部
Claims (8)
- 圧縮機,室外熱交換器,膨張弁および室内熱交換器を含む冷凍サイクルを備える空気調和機の制御方法において、
低外気温下での冷房運転時には、上記室外熱交換器の温度Teと上記室内熱交換器の温度Tiとの温度差Tx(=Te−Ti)があらかじめ設定された所定範囲内に納まるように、上記膨張弁の開度および/または上記室外熱交換器の室外ファンの回転数を制御することを特徴とする空気調和機の制御方法。 - 上記室外熱交換器の温度Teは上記室外熱交換器の出口側の温度であり、上記室内熱交換器の温度Tiは上記室内熱交換器内に通される配管パスの中央部分で検出される温度であることを特徴とする請求項1に記載の空気調和機の制御方法。
- 上記温度差Txが上記所定範囲の上限値よりも大きい場合には、上記温度差Txを上記所定範囲内に納まるように、上記膨張弁の開度の絞る方向に制御するか、および/または上記室外ファンの回転数を上げる方向に制御することを特徴とする請求項1または2に記載の空気調和機の制御方法。
- 上記温度差Txが上記所定範囲の下限値よりも小さい場合には、上記温度差Txを上記所定範囲内に納まるように、上記膨張弁の開度の大きくする方向に制御するか、および/または上記室外ファンの回転数を下げる方向に制御することを特徴とする請求項1または2に記載の空気調和機の制御方法。
- 上記温度差Txを上記所定範囲内に納まるように制御するにあたって、上記室外ファンの回転数制御に優先して、上記膨張弁の開度を制御する膨張弁制御を実行することを特徴とする請求項1ないし4のいずれか1項に記載の空気調和機の制御方法。
- 上記膨張弁制御を実行するにあたって、上記室外ファンの回転数を通常の冷房運転時の回転数よりも下げることを特徴とする請求項1ないし5のいずれか1項に記載の空気調和機の制御方法。
- 上記膨張弁制御で上記温度差Txを上記所定範囲内に納められない場合には、上記室外ファンの回転数制御に移行し、上記室外ファンの回転数を所定回転数まで下げることを特徴とする請求項1ないし6のいずれか1項に記載の空気調和機の制御方法。
- 外気温に応じて、上記膨張弁の開度および/または上記室外ファンの回転数の制御量を可変とすることを特徴とする請求項1ないし7のいずれか1項に記載の空気調和機の制御方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006200354A JP4766256B2 (ja) | 2006-07-24 | 2006-07-24 | 空気調和機の制御方法 |
EP07014397.9A EP1884726B1 (en) | 2006-07-24 | 2007-07-23 | Method of controlling air conditioner |
ES07014397.9T ES2615533T3 (es) | 2006-07-24 | 2007-07-23 | Método para controlar un acondicionador de aire |
CA2594637A CA2594637C (en) | 2006-07-24 | 2007-07-24 | Method of controlling air conditioner |
US11/878,430 US7997095B2 (en) | 2006-07-24 | 2007-07-24 | Method of controlling air conditioner cooling load utilizing controlling the opening degree of an expansion valve and/or the number of rotations of an outdoor fan |
CN200710128473XA CN101113834B (zh) | 2006-07-24 | 2007-07-24 | 空调机的控制方法 |
Applications Claiming Priority (1)
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JP2006200354A JP4766256B2 (ja) | 2006-07-24 | 2006-07-24 | 空気調和機の制御方法 |
Publications (2)
Publication Number | Publication Date |
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JP2008025932A true JP2008025932A (ja) | 2008-02-07 |
JP4766256B2 JP4766256B2 (ja) | 2011-09-07 |
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JP2006200354A Active JP4766256B2 (ja) | 2006-07-24 | 2006-07-24 | 空気調和機の制御方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7997095B2 (ja) |
EP (1) | EP1884726B1 (ja) |
JP (1) | JP4766256B2 (ja) |
CN (1) | CN101113834B (ja) |
CA (1) | CA2594637C (ja) |
ES (1) | ES2615533T3 (ja) |
Cited By (4)
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JP2010032127A (ja) * | 2008-07-29 | 2010-02-12 | Daikin Ind Ltd | 空気調和装置 |
CN104807139A (zh) * | 2015-04-24 | 2015-07-29 | 广东美的制冷设备有限公司 | 空调器的控制方法及控制装置 |
CN112856712A (zh) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | 膨胀阀控制方法及装置 |
WO2022162937A1 (ja) * | 2021-02-01 | 2022-08-04 | 三菱電機株式会社 | 空気調和装置 |
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WO2013069043A1 (ja) * | 2011-11-07 | 2013-05-16 | 三菱電機株式会社 | 空気調和装置 |
US9151526B2 (en) | 2011-12-22 | 2015-10-06 | Lennox Industries Inc. | Method to control electronic expansion valve |
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JP5911590B2 (ja) * | 2012-10-10 | 2016-04-27 | 三菱電機株式会社 | 空気調和装置 |
EP2955462B1 (en) * | 2013-06-20 | 2020-10-14 | Mitsubishi Electric Corporation | Heat pump apparatus |
CN106461296B (zh) * | 2014-05-19 | 2019-03-05 | 三菱电机株式会社 | 空调装置 |
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- 2007-07-23 ES ES07014397.9T patent/ES2615533T3/es active Active
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JP2004003721A (ja) * | 2002-05-31 | 2004-01-08 | Matsushita Electric Ind Co Ltd | 空気調和機の運転制御方法 |
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CA2594637C (en) | 2016-03-08 |
ES2615533T3 (es) | 2017-06-07 |
JP4766256B2 (ja) | 2011-09-07 |
US7997095B2 (en) | 2011-08-16 |
CN101113834A (zh) | 2008-01-30 |
EP1884726B1 (en) | 2016-12-21 |
US20080023563A1 (en) | 2008-01-31 |
CN101113834B (zh) | 2011-10-05 |
EP1884726A2 (en) | 2008-02-06 |
CA2594637A1 (en) | 2008-01-24 |
EP1884726A3 (en) | 2010-12-15 |
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