JP4661696B2 - 超臨界冷凍サイクル - Google Patents
超臨界冷凍サイクル Download PDFInfo
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- JP4661696B2 JP4661696B2 JP2006158660A JP2006158660A JP4661696B2 JP 4661696 B2 JP4661696 B2 JP 4661696B2 JP 2006158660 A JP2006158660 A JP 2006158660A JP 2006158660 A JP2006158660 A JP 2006158660A JP 4661696 B2 JP4661696 B2 JP 4661696B2
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- 238000005057 refrigeration Methods 0.000 title claims description 36
- 239000003507 refrigerant Substances 0.000 claims description 171
- 238000001514 detection method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 230000006837 decompression Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 26
- 238000004378 air conditioning Methods 0.000 description 20
- 230000002159 abnormal effect Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- 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
-
- 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
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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
- 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
-
- 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
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/063—Feed forward 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
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- 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
- F25B2600/17—Control issues by controlling the pressure of the 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
- F25B2700/19—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
- F25B2700/2102—Temperatures at the outlet of the gas cooler
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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
- F25B2700/2115—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
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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
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
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- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
減圧手段を、高圧冷媒を減圧膨張させる絞り通路(43)と、絞り通路(43)の開度を調整する弁体(44)と、電磁吸引力を発生して弁体(44)の位置を直線的に変位させる電磁コイル(44)とを有するリニアソレノイド型電気式膨張弁(4)で構成し、
絞り通路(43)上流側の高圧冷媒と絞り通路(43)下流側の低圧冷媒との差圧に応じた力が弁体(44)に対して開弁方向の力として作用するようになっており、
更に、圧縮機(1)の吐出冷媒温度を検出する温度検出手段(11)と、
温度検出手段(11)の検出信号が入力され、リニアソレノイド型電気式膨張弁(4)を制御する制御手段(10)とを備え、
制御手段(10)は、吐出冷媒温度が所定の高温以上に上昇するとリニアソレノイド型電気式膨張弁(4)をその開度が増加するように制御することを特徴としている。
しかも、請求項1に記載の発明によると、リニアソレノイド型電気式膨張弁(4)自身に後述の図1に示す機械式圧力応動弁(9a)の役割を兼務させることができる。
図1は第1実施形態を示す車両空調用冷凍サイクルの構成図であって、この冷凍サイクルは、冷媒として高圧圧力が臨界圧力以上(超臨界状態)となるCO2を用いている。従って、この冷凍サイクルは超臨界冷凍サイクルを構成する。
上述の第1実施形態では、電気式膨張弁4として、ステッピングモータ等の電気アクチュエータ機構により弁機構の開度を微小量ずつ微細に調整するタイプの電気式膨張弁を使用し、この電気式膨張弁4にバイパス通路9を並列接続し、このバイパス通路9に機械式圧力応動弁9aを配置しているが、第2実施形態では、電気式膨張弁4として、図3に示すリニアソレノイド型電気式膨張弁を使用し、このリニアソレノイド型電気式膨張弁4自身に機械式圧力応動弁9aと同等の機能を兼務させるようにしている。
なお、上述の第2実施形態では、弁体44にバネ力を作用させない例を示しているが、ハウジング40の内周磁性体部40bの端面と弁体44の大径部44aの端面との間の空隙46にバネを配置し、このバネにより弁体44に対して絞り通路43から離れる側(開弁側)への力を作用させるようにしてもよい。
5…蒸発器、9…バイパス通路、9a…機械式圧力応動弁、10…制御装置(制御手段)、11…吐出冷媒温度センサ(温度検出手段)、43…絞り通路、44…弁体、
45…電磁コイル。
Claims (5)
- 冷媒を吸入圧縮する圧縮機(1)と、
前記圧縮機(1)の吐出冷媒を冷却する放熱器(2)と、
前記放熱器(2)の出口側冷媒を減圧する減圧手段(4)と、
前記減圧手段(4)により減圧された低圧冷媒を蒸発させる蒸発器(5)とを備え、
前記蒸発器(5)を通過した冷媒が前記圧縮機(1)に吸入されるようになっており、
更に、高圧側の冷媒圧力が冷媒の臨界圧力以上となる超臨界冷凍サイクルにおいて、
前記圧縮機を吐出容量が一定の固定容量型圧縮機(1)で構成し、
前記減圧手段を、高圧冷媒を減圧膨張させる絞り通路(43)と、前記絞り通路(43)の開度を調整する弁体(44)と、電磁吸引力を発生して前記弁体(44)の位置を直線的に変位させる電磁コイル(44)とを有するリニアソレノイド型電気式膨張弁(4)で構成し、
前記絞り通路(43)上流側の高圧冷媒と前記絞り通路(43)下流側の低圧冷媒との差圧に応じた力が前記弁体(44)に対して開弁方向の力として作用するようになっており、
更に、前記圧縮機(1)の吐出冷媒温度を検出する温度検出手段(11)と、
前記温度検出手段(11)の検出信号が入力され、前記リニアソレノイド型電気式膨張弁(4)を制御する制御手段(10)とを備え、
前記制御手段(10)は、前記吐出冷媒温度が所定の高温以上に上昇すると前記リニアソレノイド型電気式膨張弁(4)をその開度が増加するように制御することを特徴とする超臨界冷凍サイクル。 - 前記弁体(44)は前記絞り通路(43)の下流側に配置され、前記絞り通路(43)を通過する冷媒流れの動圧が、前記差圧に応じた力として前記弁体(44)に作用することを特徴とする請求項1に記載の超臨界冷凍サイクル。
- 前記電磁コイル(44)の電磁吸引力が増加することにより前記弁体(44)が閉弁方向に変位するようになっていることを特徴とする請求項1または2に記載の超臨界冷凍サイクル。
- 前記制御手段(10)は、前記吐出冷媒温度が前記所定の高温に上昇したとき、前記吐出冷媒温度が一定温度低下するまで、前記電気式膨張弁(4)の開度を微小開度ずつ増加することを特徴とする請求項1ないし3のいずれか1つに記載の超臨界冷凍サイクル。
- 前記制御手段(10)は、前記吐出冷媒温度が前記所定の高温まで上昇していない通常運転時に、実際の高圧側冷媒圧力が前記放熱器(2)の出口冷媒温度に基づいて決定される目標高圧圧力となるように前記電気式膨張弁(4)の開度を制御することを特徴とする請求項1ないし4のいずれか1つに記載の超臨界冷凍サイクル。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006158660A JP4661696B2 (ja) | 2005-12-08 | 2006-06-07 | 超臨界冷凍サイクル |
DE102006057584.9A DE102006057584B4 (de) | 2005-12-08 | 2006-12-06 | Überkritischer Kühlkreis |
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JP2005354770 | 2005-12-08 | ||
JP2006158660A JP4661696B2 (ja) | 2005-12-08 | 2006-06-07 | 超臨界冷凍サイクル |
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JP2007183086A JP2007183086A (ja) | 2007-07-19 |
JP4661696B2 true JP4661696B2 (ja) | 2011-03-30 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2508655A (en) * | 2012-12-07 | 2014-06-11 | Elstat Electronics Ltd | CO2 refrigeration compressor control system |
DE102015102400A1 (de) * | 2015-02-20 | 2016-08-25 | Denso Automotive Deutschland Gmbh | Verfahren zum Betreiben eines Kältemittelkreislaufs, insbesondere im Niederlastbetrieb |
CN108106032A (zh) * | 2016-11-25 | 2018-06-01 | 开利公司 | 制冷系统及其电控装置的冷却方法 |
JP6998780B2 (ja) * | 2018-02-02 | 2022-01-18 | 株式会社デンソー | 冷凍サイクル装置 |
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DE4432272C2 (de) | 1994-09-09 | 1997-05-15 | Daimler Benz Ag | Verfahren zum Betreiben einer Kälteerzeugungsanlage für das Klimatisieren von Fahrzeugen und eine Kälteerzeugungsanlage zur Durchführung desselben |
US6105386A (en) | 1997-11-06 | 2000-08-22 | Denso Corporation | Supercritical refrigerating apparatus |
JPH11248272A (ja) | 1998-01-05 | 1999-09-14 | Denso Corp | 超臨界冷凍サイクル |
JP4688369B2 (ja) | 2001-08-30 | 2011-05-25 | 株式会社日本クライメイトシステムズ | 車両用空調装置 |
DE10338388B3 (de) | 2003-08-21 | 2005-04-21 | Daimlerchrysler Ag | Verfahren zur Regelung einer Klimaanlage |
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- 2006-12-06 DE DE102006057584.9A patent/DE102006057584B4/de not_active Expired - Fee Related
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JPH05262127A (ja) * | 1991-03-15 | 1993-10-12 | Toyota Autom Loom Works Ltd | 揺動斜板式可変容量型圧縮機を備えた空調装置の運転制御方法 |
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JP2001116398A (ja) * | 1999-10-15 | 2001-04-27 | Zexel Valeo Climate Control Corp | 冷凍サイクル |
JP2001174091A (ja) * | 1999-12-15 | 2001-06-29 | Mitsubishi Electric Corp | 冷凍サイクル |
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JP2003065635A (ja) * | 2001-08-24 | 2003-03-05 | Zexel Valeo Climate Control Corp | 冷凍サイクル |
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DE102006057584B4 (de) | 2018-11-22 |
DE102006057584A1 (de) | 2007-07-19 |
JP2007183086A (ja) | 2007-07-19 |
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