JP2008039234A - 空気調和装置 - Google Patents
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- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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- 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
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- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
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- 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
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- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- 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
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- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- 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
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- 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
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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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
- 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
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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
- 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
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- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
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- 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
- F25B2600/17—Control issues by controlling the pressure of the condenser
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
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Abstract
【解決手段】空気調和装置1では、暖房運転時、室内熱交換器16が、超臨界の冷媒から空気に対して放熱を行わせる。制御装置4は、室内熱交換器16を含む冷凍サイクルの高圧側圧力を一定に維持する。また、制御装置4は、出口温度センサ41によって室内熱交換器16の冷媒出口温度Tgcを検知し、室温センサ42によって室温Taを検知する。さらに、制御装置4は、暖房時、室内熱交換器16の冷媒出口温度Tgcが目標値Tgcsに達していても、暖房されるべき室内の室温Taからみて能力過不足と判断した場合には、高圧側圧力の目標値を増減させる。
【選択図】図3
Description
図1は、本発明の実施形態に係る空気調和装置の構成図である。空気調和装置1は、冷媒として、高圧側が臨界圧力以上となるCO2を用いている。
(冷房運転)
冷房運転時において、四路切換弁12は、図1の点線で示すように接続され、圧縮機11と室外熱交換器13とが連通し、室内熱交換器16および室外熱交換器13は、それぞれ蒸発器および放熱器として機能する。すなわち、圧縮機11から吐出された高温・高圧の冷媒ガスが室外熱交換器13に導入される。ここで、冷媒ガスと室外空気との熱交換が行われた後、中温・高圧ガスは室内膨張弁15で減圧され、低温・低圧の二相冷媒となり室内熱交換器16に導入される。ここで室内空気と熱交換が行われた後、再び圧縮機11に吸入される。
一方、暖房運転時において、四路切換弁12は、図1の実線で示すように接続され、圧縮機11と室内熱交換器16とが連通し、室内熱交換器16および室外熱交換器13はそれぞれ放熱器および蒸発器として機能する。すなわち、圧縮機11より吐出された高温・高圧の冷媒ガスが室内熱交換器16に導入される。ここで、冷媒ガスと室内空気との熱交換が行われた後、中温・高圧ガスは配管を通過し、室外膨張弁14で減圧されて室外熱交換器13に導入される。ここで室外空気と熱交換が行われ、再び圧縮機11に吸入される。
制御装置4は、室内熱交換器16の冷媒出口に設けられた出口温度センサ41、および室内熱交換器16の空気吸入側に設けられた室温センサ42で検知される値を監視し、室外膨張弁14、および室内膨張弁15の開度や、圧縮機11の運転周波数を制御する。
ここで、従来の冷凍サイクルと超臨界冷凍サイクルの違いについて説明する。図2(a)は、R410Aを使用した冷凍サイクルの圧力−エンタルピー線図であり、図2(b)は、CO2を使用した超臨界冷凍サイクルの圧力−エンタルピー線図である。
次に、制御装置4のマイコン5による暖房能力制御について説明する。図3は暖房能力制御の制御ブロック図であり、図4は暖房能力制御のフローチャートである。空気調和装置1における暖房運転の制御は、暖房能力の確保に必要な高圧側圧力を圧縮機11の運転周波数によって制御し、室内熱交換器16の冷媒出口状態を室外膨張弁14の開度によって制御する。
(1)
空気調和装置1では、暖房運転時、室内熱交換器16が、超臨界の冷媒から空気に対して放熱を行わせる。制御装置4は、室内熱交換器16を含む冷凍サイクルの高圧側圧力を一定に維持する。また、制御装置4は、出口温度センサ41によって室内熱交換器16の冷媒出口温度Tgcを検知し、室温センサ42によって室温Taを検知する。
空気調和装置1は、複数の室内機3を備えている。そして制御装置4は、室内機3ごとに、室内熱交換器16の冷媒出口温度Tgcと室温Taとの差を監視し、高圧側圧力の目標値を増減させている。このため、暖房時、各室内機3の必要能力に応じて高圧側圧力を増減することができ、室内機全てにおいて必要な能力が引き出され、暖房の快適性が向上する。
3 室内機
4 制御装置
11 圧縮機
13 室外熱交換器(蒸発器)
14 室外膨張弁(膨張機構)
16 室内熱交換器(放熱器)
41 出口温度センサ
42 室温センサ
Claims (8)
- 暖房運転時に超臨界の冷媒から空気に対して放熱を行わせる放熱器(16)と、
前記放熱器(16)を含む冷凍サイクルの高圧側圧力と、前記放熱器(16)の冷媒出口温度とを、予め設定されたそれぞれの目標値へ到達させることによって、空調対象である室内の室温を制御する制御装置(4)と、
を備え、
前記制御装置(4)は、前記高圧側圧力および前記冷媒出口温度が前記目標値に達しているにもかかわらず、前記室温から暖房運転能力の過不足を認知した場合には、前記高圧側圧力の目標値を増減させる、
空気調和装置(1)。 - 前記制御装置(4)は、前記室温が設定温度に到達せずに所定時間が経過したとき、前記高圧側圧力の目標値を増加させる、
請求項1に記載の空気調和装置(1)。 - 前記制御装置(4)は、前記室温の時間微分から算出した設定温度への推定到達時間が所定の閾値を超過したとき、前記高圧側圧力の目標値を増加させる、
請求項1に記載の空気調和装置(1)。 - 前記制御装置(4)は、前記冷媒出口温度と前記室温との差が、予め設定されている規定値より小さくなったとき、前記高圧側圧力の目標値を低下させる、
請求項1に記載の空気調和装置(1)。 - 前記放熱器(16)の冷媒出口温度を検知する出口温度検知器(41)と、
前記室温を検知する室温検知器(42)と、
をさらに備え、
前記制御装置(4)は、前記出口温度検知器(41)の出力値と、前記室温検知器(42)の出力値との差から、前記高圧側圧力の目標値の増減幅を決定する、
請求項1に記載の空気調和装置(1)。 - 前記放熱器(16)を搭載した複数の室内機(3)をさらに備え、
前記制御装置(4)は、前記室内機(3)ごとに、前記放熱器(16)の冷媒出口温度と前記室温との差を監視し、前記高圧側圧力の目標値を増減させる、
請求項1に記載の空気調和装置(1)。 - 前記複数の室内機(3)ごとに、前記放熱器(16)の冷媒出口温度と前記室温との差に対する規定値が設定され、
前記制御装置(4)は、前記差が前記規定値より小さくなったとき、前記高圧側圧力の目標値を低下させる、
請求項6に記載の空気調和装置(1)。 - 前記冷凍サイクルは、圧縮機(11)、前記放熱器(16)、膨張機構(14)、および蒸発器(13)が順次接続されて成る冷媒回路(10)を有し、
前記高圧側圧力は、前記冷媒回路(10)内に存在する冷媒が、前記圧縮機(11)の冷媒吐出口から前記放熱器(16)を経て前記膨張機構(14)の冷媒入口に至るまでの区間で受ける圧力である、
請求項1に記載の空気調和装置(1)。
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006211937A JP5055884B2 (ja) | 2006-08-03 | 2006-08-03 | 空気調和装置 |
EP07791203.8A EP2053319B1 (en) | 2006-08-03 | 2007-07-24 | Air conditioner |
US12/375,242 US8104299B2 (en) | 2006-08-03 | 2007-07-24 | Air conditioner |
KR1020097002002A KR20090034939A (ko) | 2006-08-03 | 2007-07-24 | 공기 조화 장치 |
PCT/JP2007/064471 WO2008015930A1 (fr) | 2006-08-03 | 2007-07-24 | Conditionneur d'air |
CN2007800281357A CN101495816B (zh) | 2006-08-03 | 2007-07-24 | 空调装置 |
AU2007279774A AU2007279774B2 (en) | 2006-08-03 | 2007-07-24 | Air conditioner |
ES07791203T ES2721546T3 (es) | 2006-08-03 | 2007-07-24 | Acondicionador de aire |
TR2019/05266T TR201905266T4 (tr) | 2006-08-03 | 2007-07-24 | İklimlendirme cihazı. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006211937A JP5055884B2 (ja) | 2006-08-03 | 2006-08-03 | 空気調和装置 |
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Publication Number | Publication Date |
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JP2008039234A true JP2008039234A (ja) | 2008-02-21 |
JP5055884B2 JP5055884B2 (ja) | 2012-10-24 |
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JP2006211937A Active JP5055884B2 (ja) | 2006-08-03 | 2006-08-03 | 空気調和装置 |
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Country | Link |
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US (1) | US8104299B2 (ja) |
EP (1) | EP2053319B1 (ja) |
JP (1) | JP5055884B2 (ja) |
KR (1) | KR20090034939A (ja) |
CN (1) | CN101495816B (ja) |
AU (1) | AU2007279774B2 (ja) |
ES (1) | ES2721546T3 (ja) |
TR (1) | TR201905266T4 (ja) |
WO (1) | WO2008015930A1 (ja) |
Cited By (5)
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- 2007-07-24 TR TR2019/05266T patent/TR201905266T4/tr unknown
- 2007-07-24 CN CN2007800281357A patent/CN101495816B/zh active Active
- 2007-07-24 ES ES07791203T patent/ES2721546T3/es active Active
- 2007-07-24 EP EP07791203.8A patent/EP2053319B1/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2009243829A (ja) * | 2008-03-31 | 2009-10-22 | Daikin Ind Ltd | 空気調和装置 |
JP2011158118A (ja) * | 2010-01-29 | 2011-08-18 | Mitsubishi Heavy Ind Ltd | マルチ型空気調和機 |
WO2015046414A1 (ja) * | 2013-09-30 | 2015-04-02 | ダイキン工業株式会社 | 空調システム及びその制御方法 |
JP2015068590A (ja) * | 2013-09-30 | 2015-04-13 | ダイキン工業株式会社 | 空調システム及びその制御方法 |
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WO2024209870A1 (ja) * | 2023-04-05 | 2024-10-10 | パナソニックIpマネジメント株式会社 | 冷凍装置 |
Also Published As
Publication number | Publication date |
---|---|
TR201905266T4 (tr) | 2019-05-21 |
US20100281895A1 (en) | 2010-11-11 |
AU2007279774A1 (en) | 2008-02-07 |
EP2053319A1 (en) | 2009-04-29 |
ES2721546T3 (es) | 2019-08-01 |
CN101495816A (zh) | 2009-07-29 |
JP5055884B2 (ja) | 2012-10-24 |
AU2007279774B2 (en) | 2010-08-05 |
CN101495816B (zh) | 2011-05-04 |
EP2053319A4 (en) | 2014-04-16 |
EP2053319B1 (en) | 2019-01-30 |
KR20090034939A (ko) | 2009-04-08 |
WO2008015930A1 (fr) | 2008-02-07 |
US8104299B2 (en) | 2012-01-31 |
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