JP7466754B2 - 空気調和装置 - Google Patents
空気調和装置 Download PDFInfo
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- JP7466754B2 JP7466754B2 JP2023500176A JP2023500176A JP7466754B2 JP 7466754 B2 JP7466754 B2 JP 7466754B2 JP 2023500176 A JP2023500176 A JP 2023500176A JP 2023500176 A JP2023500176 A JP 2023500176A JP 7466754 B2 JP7466754 B2 JP 7466754B2
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- 238000004378 air conditioning Methods 0.000 title claims description 37
- 239000003507 refrigerant Substances 0.000 claims description 52
- 238000010586 diagram Methods 0.000 description 19
- 230000007423 decrease Effects 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 101100208381 Caenorhabditis elegans tth-1 gene Proteins 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- 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
- 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
-
- 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
- F25B2700/2116—Temperatures of a condenser
-
- 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
- F25B2700/2117—Temperatures of an 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
- 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
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Description
図1は、実施の形態1に係る空気調和装置の構成を示す図である。空気調和装置1は、圧縮機10と、室内熱交換器20と、電子膨張弁(LEV:Linear Expansion Valve)111と、室外熱交換器40と、配管90,92,94,96,97,99と、四方弁100とを含む冷媒回路150を備える。四方弁100は、ポートE~Hを有する。
実施の形態1では、図7に示すように、適切な時間比を吐出SHの値を検出しながら時間比を変化させていき、適切な時間比を決定した。
実施の形態3では、圧縮機10の運転周波数に応じて、LEV111の開度をある時間内で時間比(図3中のtB/tC)を調整し所望のCv値(CvC)を得ることを特徴とする。
実施の形態4では、実施の形態1~3を組み合わせることによって、室内空気温度、室外空気温度および運転周波数に応じた時間比に基づいて、LEV111を制御することを特徴とする。
本実施の形態の空気調和装置1は、冷媒回路150と制御装置200とを備える。冷媒回路150は、圧縮機10と、凝縮器40,20と、LEV111と、蒸発器20,40とに冷媒が循環するように構成される。LEV111は、下限開度から上限開度までの間で開度が可変に構成される。制御装置200は、上限開度の4分の1の開度以下の範囲内において、第1開度CvAと第1開度CvAよりも小さい第2開度CvBとを交互に繰り返すようにLEV111を制御するように構成される。
Claims (7)
- 圧縮機と、凝縮器と、膨張弁と、蒸発器とに冷媒が循環するように構成された冷媒回路と、
前記凝縮器および前記蒸発器のいずれか一方と前記圧縮機とを収容する室外機と、
前記凝縮器および前記蒸発器のいずれか他方を収容する室内機と、
前記膨張弁を制御する制御装置とを備え、
前記膨張弁は、下限開度から上限開度までの間で開度が可変に構成され、
前記制御装置は、前記室内機に吸い込まれる空気の温度と設定温度との差の大きさが閾値よりも小さいという第1条件を含む低容量運転条件が成立する場合に、前記上限開度の4分の1の開度以下の範囲内において、第1開度と前記第1開度よりも小さい第2開度とを交互に繰り返すように前記膨張弁を制御するように構成され、
前記制御装置は、前記第1条件が成立しない場合には、1つの指令値で指定する開度に前記膨張弁を制御するように構成される、空気調和装置。 - nを自然数とすると、前記制御装置は、前記下限開度から前記上限開度までの間の複数開度を0からnの指令値によって指定し、
前記制御装置は、nの4分の1以下の前記指令値の範囲において、第1指令値と前記第1指令値よりも小さい第2指令値とを交互に繰り返すように前記指令値を出力する、請求項1に記載の空気調和装置。 - 前記低容量運転条件は、前記第1条件を満たし、かつ、前記圧縮機が吐出する前記冷媒の過熱度の値が規定値以下であるという第2条件を満たす場合に成立する、請求項1に記載の空気調和装置。
- 前記制御装置は、前記過熱度の値を前記規定値に近づけるように、前記第1開度と前記第2開度とを交互に繰り返す周期における前記第1開度と前記第2開度との時間比を調整する、請求項3に記載の空気調和装置。
- 前記制御装置は、
演算処理部とメモリとを備え、
前記メモリは、室内温度と、外気温度とを入力データとし、前記第1開度と前記第2開度とを交互に繰り返す周期における前記第1開度と前記第2開度との時間比または前記時間比に対応する前記膨張弁の容量係数を出力データとするマップを記憶し、
前記演算処理部は、前記マップを用いて前記膨張弁を制御する、請求項1に記載の空気調和装置。 - 前記制御装置は、
演算処理部とメモリとを備え、
前記メモリは、前記圧縮機の運転周波数を入力データとし、前記第1開度と前記第2開度とを交互に繰り返す周期における前記第1開度と前記第2開度との時間比または前記時間比に対応する前記膨張弁の容量係数を出力データとするマップを記憶し、
前記演算処理部は、前記マップを用いて前記膨張弁を制御する、請求項1に記載の空気調和装置。 - 前記制御装置は、
演算処理部とメモリとを備え、
前記メモリは、室内温度と、外気温度と、前記圧縮機の運転周波数とを入力データとし、前記第1開度と前記第2開度とを交互に繰り返す周期における前記第1開度と前記第2開度との時間比または前記時間比に対応する前記膨張弁の容量係数を出力データとするマップを記憶し、
前記演算処理部は、前記マップを用いて前記膨張弁を制御する、請求項1に記載の空気調和装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2021/005858 WO2022176050A1 (ja) | 2021-02-17 | 2021-02-17 | 空気調和装置 |
Publications (3)
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JPWO2022176050A1 JPWO2022176050A1 (ja) | 2022-08-25 |
JPWO2022176050A5 JPWO2022176050A5 (ja) | 2023-10-02 |
JP7466754B2 true JP7466754B2 (ja) | 2024-04-12 |
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JP2023500176A Active JP7466754B2 (ja) | 2021-02-17 | 2021-02-17 | 空気調和装置 |
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US (1) | US20240068699A1 (ja) |
EP (1) | EP4296593A4 (ja) |
JP (1) | JP7466754B2 (ja) |
WO (1) | WO2022176050A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009243847A (ja) | 2008-03-31 | 2009-10-22 | Mitsubishi Heavy Ind Ltd | マルチ形空気調和機 |
JP2017194244A (ja) | 2016-04-22 | 2017-10-26 | 株式会社大気社 | 冷却装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05133618A (ja) * | 1991-11-12 | 1993-05-28 | Hitachi Ltd | 空気調和装置 |
JPH11211286A (ja) * | 1998-01-23 | 1999-08-06 | Hitachi Ltd | 空気調和機 |
JP5218694B1 (ja) * | 2012-01-04 | 2013-06-26 | ダイキン工業株式会社 | 電子膨張弁および電子膨張弁を備えた空気調和機 |
WO2016139736A1 (ja) * | 2015-03-02 | 2016-09-09 | 三菱電機株式会社 | 冷凍サイクル装置の制御装置及び方法 |
-
2021
- 2021-02-17 WO PCT/JP2021/005858 patent/WO2022176050A1/ja active Application Filing
- 2021-02-17 EP EP21926490.0A patent/EP4296593A4/en active Pending
- 2021-02-17 US US18/261,406 patent/US20240068699A1/en active Pending
- 2021-02-17 JP JP2023500176A patent/JP7466754B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009243847A (ja) | 2008-03-31 | 2009-10-22 | Mitsubishi Heavy Ind Ltd | マルチ形空気調和機 |
JP2017194244A (ja) | 2016-04-22 | 2017-10-26 | 株式会社大気社 | 冷却装置 |
Also Published As
Publication number | Publication date |
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EP4296593A4 (en) | 2024-03-27 |
WO2022176050A1 (ja) | 2022-08-25 |
US20240068699A1 (en) | 2024-02-29 |
EP4296593A1 (en) | 2023-12-27 |
JPWO2022176050A1 (ja) | 2022-08-25 |
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