WO2003064940A1 - Conditionneur d'air - Google Patents
Conditionneur d'air Download PDFInfo
- Publication number
- WO2003064940A1 WO2003064940A1 PCT/JP2003/000721 JP0300721W WO03064940A1 WO 2003064940 A1 WO2003064940 A1 WO 2003064940A1 JP 0300721 W JP0300721 W JP 0300721W WO 03064940 A1 WO03064940 A1 WO 03064940A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic expansion
- heat exchanger
- degree
- opening degree
- flow rate
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 41
- 238000005057 refrigeration Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 12
- 238000004378 air conditioning Methods 0.000 claims description 9
- 101100002917 Caenorhabditis elegans ash-2 gene Proteins 0.000 claims description 3
- 229910052571 earthenware Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method 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
Classifications
-
- 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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
-
- 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
- F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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
- F25B2600/21—Refrigerant outlet evaporator 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
- F25B2700/2113—Temperatures of a suction accumulator
-
- 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
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction 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
- F25B2700/2115—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
-
- 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
Definitions
- the present invention relates to an air conditioner provided with an electronic expansion valve for controlling the flow rate of a refrigerant.
- the air conditioner has a refrigeration cycle in which the refrigerant discharged from the compressor is returned to the compressor through the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger.
- a refrigerant to be charged into the refrigeration cycle a conventional R 2 2 refrigerant is used, and recently, a high pressure R 4 10 refrigerant is used.
- a large electronic expansion valve is used as the expansion valve. (PMV) is adopted. By changing the opening degree of the electronic expansion valve, the flow rate of the refrigerant can be adjusted.
- the electronic expansion valve is clogged, the flow of coolant will be impeded. If the flow of refrigerant is impeded, the high-pressure side pressure of the refrigeration cycle may rise to a level that exceeds the design pressure resistance of the parts that make up the refrigeration cycle. There is.
- the object of the present invention is to control the flow rate of the refrigerant in a wide range and finely without causing an increase in cost, and to avoid an unnecessary increase in the high pressure side pressure. To provide an air conditioner with excellent economy and reliability.
- the air conditioner of the present invention is
- a compressor an outdoor heat exchanger, a plurality of electronic expansion valves connected in parallel to one another, and an indoor heat exchanger, a refrigerant discharged from the compressor being the outdoor heat exchanger, the respective electronic expansion valves, And a refrigeration cycle which passes through the indoor heat exchanger and is sucked into the compressor;
- a controller that controls the flow rate of the refrigerant in the refrigeration cycle by changing the opening degree of each of the electronic expansion valves
- FIG. 1 is a block diagram showing the configuration of one embodiment.
- FIG. 2 is a view showing a flow rate one valve opening characteristic of one electronic expansion valve in one embodiment.
- FIG. 3 is a view showing a flow rate one valve opening characteristic of the other electronic expansion valve in one embodiment.
- FIG. 4 is a flow chart for explaining the operation of one embodiment.
- FIG. 5 is a diagram showing an example of opening degree control of each electronic expansion valve in one embodiment.
- the refrigerant discharged from the compressor 1 flows through the four-way valve 2 to the outdoor heat exchanger 3 as indicated by the solid arrows, and the refrigerant having passed through the outdoor heat exchanger 3 has two electronic expansion valves It flows to the indoor heat exchanger 6 via 4 and 5.
- the refrigerant having passed through the indoor heat exchanger 6 is sucked into the compressor 1 through the four-way valve 2 and the accumulator 7.
- the electronic expansion valves 4 and 5 are pulse motor valves (PMV; pulse motor valve) whose opening degree changes continuously according to the number of drive pulse signals input, and are connected in parallel with each other. . Further, the electronic expansion valves 4 and 5 have different flow rate single valve opening characteristics.
- the flow rate-one valve opening characteristic of the electronic expansion valve 4 is shown in FIG. 2, and the flow rate one-valve opening characteristic of the electronic expansion valve 5 is shown in FIG.
- the refrigerant discharged from the compressor 1 flows through the four-way valve 2 to the indoor heat exchanger 6, and the refrigerant that has passed through the indoor heat exchanger 6 has two electronic expansion valves It flows to the outdoor heat exchanger 3 through 4 and 5.
- the refrigerant that has passed through the outdoor heat exchanger 3 is sucked into the compressor 1 through the four-way valve 2 and the actuator member 7.
- a heat pump type refrigeration system is provided by the compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the electronic expansion valves 4, 5, and the indoor heat exchanger 6.
- the cartridge is configured.
- An outdoor fan 8 for outdoor air circulation is provided for the outdoor heat exchanger 3.
- An indoor fan 9 for circulating indoor air is provided for the indoor heat exchanger 6.
- An indoor temperature sensor 10 is provided in the room where air is drawn into the room by the indoor fan 9.
- a temperature sensor 1 1 for detecting the temperature of the refrigerant discharged from the compressor 1 is attached to a high pressure side pipe between the discharge port of the compressor 1 and the four-way valve 2.
- a temperature sensor 12 for detecting the temperature of the refrigerant flowing out of the outdoor heat exchanger 3 or the indoor heat exchanger 6 is attached to a low pressure side pipe between the four-way valve 2 and the accumulator 7.
- a temperature sensor 13 is attached to a low pressure side pipe between the accumulator 7 and the suction port of the compressor 1 to detect the temperature of the refrigerant drawn into the compressor 1.
- Inverter 2 1 is connected to commercial AC power supply 2 0.
- Inverter 21 rectifies the voltage of commercial AC power supply 20, converts the rectified voltage into an AC voltage of the frequency (and level) according to the command from controller 30, and outputs it.
- the output of the inverter 2 1 is supplied to the motor 1 M of the compressor 1 as drive power for the compressor 1.
- the controller 30 controls the four-way valve 2, the electronic expansion valves 4 and 5, and the outdoor fan according to the operation of the controller 3 1 and the detected temperatures of the temperature sensors 1 0, 1 1, 1 2 and 1 3. It controls the indoor fan 9 and the inverter 2 1 and has the following methods (1) to (4) as the main functions.
- a first control unit that controls the output frequency F of the inverter 2 1 according to the air conditioning load detected by the first detection unit.
- a second detection unit that detects the degree of superheat SH of the refrigerant in the evaporator (the indoor heat exchanger 6 or the outdoor heat exchanger 3).
- a second control unit that controls the opening degree of the electronic expansion valves 4 and 5 so that the degree of superheat SH detected by the second detection unit converges to the target value S H s.
- the difference between the detected temperature Ta of the indoor temperature sensor 10 and the set room temperature Ts is detected as the air conditioning load of the room in which the indoor heat exchanger 6 is installed (step 1 0 1).
- the output frequency F of the inverter 2 1 is controlled according to this air conditioning load (step 102). That is, if the air conditioning load is small, the output frequency F of the inverter 2 1 is set to a low value, and the output frequency F of the inverter 2 1 is increased as the air conditioning load increases. When the air conditioning load is reduced, the output frequency F of inverter 2 1 is decreased. As the output frequency F changes, the number of revolutions (capacity) of the compressor 1 changes.
- the indoor heat exchanger 6 is an evaporator during cooling, and the outdoor heat exchanger 3 is an evaporator during heating
- the temperature of the refrigerant is detected by the temperature sensor 12 and the detected temperature and temperature sensor 1
- the difference from the detected temperature of 3 is detected as the degree of superheat SH of the refrigerant in the evaporator (step 1 0 3).
- the difference AS between the degree of superheat SH and the target value SH s H is detected (steps 1 0 4).
- Fig. 5 shows an example of this degree of opening control.
- the target value S H s is determined according to the temperature detected by the temperature sensors 1 1 12 3.
- the ratio of the flow rate to the valve opening is smaller
- the electronic expansion valve 5 is fixed at a predetermined opening degree (opening degree selected as appropriate), and the opening degree of the electronic expansion valve 4 having a larger ratio of the flow rate to the valve opening degree is changed (step 1 0 6).
- the degree of superheat SH greatly changes toward the target value S H s.
- the opening degree of the electronic expansion valves 4 and 5 is controlled in the same manner as described above according to the difference between the superheat degree S H and the target value S H s at that time.
- the degree of opening of the electronic expansion valve 4 with the larger ratio of the flow rate to the valve opening degree is fixed at zero.
- the degree of opening of the electronic expansion valve 5 with the smaller ratio of the valve opening degree to the valve opening degree is changed.
- the degree of superheat SH can be converged to the target value S H s by reliably controlling the flow rate of the refrigerant.
- the amount of coolant flowing through the electronic expansion valves 4 and 5 can be made as in the prior art. It can be reduced compared to the amount of refrigerant flowing to one electronic expansion valve. Therefore, even if a high pressure R 4 0 0 refrigerant is filled in the refrigeration cycle, the flow rate of refrigerant in the refrigeration cycle can be reliably controlled without using a large electronic expansion valve as in the past. be able to. The cost is lower with the two small electronic expansion valves 4 and 5 than when the large electronic expansion valve is used.
- the number of the electronic expansion valves is not limited to two and may be plural.
- the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03701877.7A EP1477748B1 (en) | 2002-01-28 | 2003-01-27 | Air conditioner |
ES03701877T ES2427796T3 (es) | 2002-01-28 | 2003-01-27 | Acondicionador de aire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-18024 | 2002-01-28 | ||
JP2002018024A JP2003214729A (ja) | 2002-01-28 | 2002-01-28 | 空気調和機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003064940A1 true WO2003064940A1 (fr) | 2003-08-07 |
Family
ID=27653507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000721 WO2003064940A1 (fr) | 2002-01-28 | 2003-01-27 | Conditionneur d'air |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1477748B1 (ja) |
JP (1) | JP2003214729A (ja) |
CN (1) | CN1283964C (ja) |
ES (1) | ES2427796T3 (ja) |
WO (1) | WO2003064940A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9027363B2 (en) | 2008-02-01 | 2015-05-12 | Daikin Industries, Ltd. | Economizer having multiple liquid outlets and multiple float expansion valves |
WO2016194185A1 (ja) * | 2015-06-03 | 2016-12-08 | 三菱電機株式会社 | 冷凍サイクル装置 |
US9915451B2 (en) | 2013-02-19 | 2018-03-13 | Carrier Corporation | Level control in an evaporator |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101005678B1 (ko) * | 2006-01-20 | 2011-01-05 | 도시바 캐리어 가부시키가이샤 | 공기 조화 장치 |
JP4687637B2 (ja) * | 2006-12-04 | 2011-05-25 | 株式会社デンソー | エジェクタ式ヒートポンプサイクル |
JP5525278B2 (ja) * | 2010-02-15 | 2014-06-18 | 東芝キヤリア株式会社 | 熱源ユニット |
EP2833082A4 (en) * | 2012-03-29 | 2016-01-06 | Mitsubishi Electric Corp | AIR CONDITIONING |
US9796239B2 (en) | 2013-03-13 | 2017-10-24 | Bergstrom Inc. | Air conditioning system utilizing heat recovery ventilation for fresh air supply and climate control |
EP3065959B1 (en) | 2013-11-04 | 2020-06-10 | Bergstrom, Inc. | Low profile air conditioning system |
US9783024B2 (en) | 2015-03-09 | 2017-10-10 | Bergstrom Inc. | System and method for remotely managing climate control systems of a fleet of vehicles |
JP6339036B2 (ja) * | 2015-03-17 | 2018-06-06 | ヤンマー株式会社 | ヒートポンプ |
US10006684B2 (en) | 2015-12-10 | 2018-06-26 | Bergstrom, Inc. | Air conditioning system for use in vehicle |
US10088208B2 (en) * | 2016-01-06 | 2018-10-02 | Johnson Controls Technology Company | Vapor compression system |
US9874384B2 (en) * | 2016-01-13 | 2018-01-23 | Bergstrom, Inc. | Refrigeration system with superheating, sub-cooling and refrigerant charge level control |
US10589598B2 (en) | 2016-03-09 | 2020-03-17 | Bergstrom, Inc. | Integrated condenser and compressor system |
JP2017211099A (ja) * | 2016-05-23 | 2017-11-30 | 株式会社鷺宮製作所 | 冷凍装置 |
US10081226B2 (en) | 2016-08-22 | 2018-09-25 | Bergstrom Inc. | Parallel compressors climate system |
US10562372B2 (en) | 2016-09-02 | 2020-02-18 | Bergstrom, Inc. | Systems and methods for starting-up a vehicular air-conditioning system |
US10675948B2 (en) | 2016-09-29 | 2020-06-09 | Bergstrom, Inc. | Systems and methods for controlling a vehicle HVAC system |
US10369863B2 (en) | 2016-09-30 | 2019-08-06 | Bergstrom, Inc. | Refrigerant liquid-gas separator with electronics cooling |
US10724772B2 (en) | 2016-09-30 | 2020-07-28 | Bergstrom, Inc. | Refrigerant liquid-gas separator having an integrated check valve |
US11448441B2 (en) | 2017-07-27 | 2022-09-20 | Bergstrom, Inc. | Refrigerant system for cooling electronics |
US11420496B2 (en) | 2018-04-02 | 2022-08-23 | Bergstrom, Inc. | Integrated vehicular system for conditioning air and heating water |
CN110398098B (zh) * | 2019-07-23 | 2021-11-23 | 广东美的暖通设备有限公司 | 空调器及其电子膨胀阀控制方法、控制装置和存储介质 |
WO2023199464A1 (ja) * | 2022-04-14 | 2023-10-19 | 三菱電機株式会社 | 冷凍サイクル装置 |
DE102022109795A1 (de) * | 2022-04-22 | 2023-10-26 | Ratiotherm GmbH & Co. KG | Gebäudeheizung und/oder -kühlung mit einer Wärmepumpe |
EP4361532A1 (en) * | 2022-10-26 | 2024-05-01 | Ariston S.P.A. | Heat pump with double expansion valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61231370A (ja) | 1985-04-08 | 1986-10-15 | 株式会社デンソー | 冷蔵庫 |
JPS61181271U (ja) | 1985-04-27 | 1986-11-12 | ||
JPS6373060A (ja) | 1986-09-13 | 1988-04-02 | ダイキン工業株式会社 | 冷凍装置 |
JPH03217771A (ja) | 1990-01-22 | 1991-09-25 | Sanyo Electric Co Ltd | 空気調和装置 |
JPH10288408A (ja) | 1997-04-10 | 1998-10-27 | Yaskawa Electric Corp | 省エネルギー冷凍システムの制御方法 |
-
2002
- 2002-01-28 JP JP2002018024A patent/JP2003214729A/ja active Pending
-
2003
- 2003-01-27 EP EP03701877.7A patent/EP1477748B1/en not_active Expired - Lifetime
- 2003-01-27 ES ES03701877T patent/ES2427796T3/es not_active Expired - Lifetime
- 2003-01-27 WO PCT/JP2003/000721 patent/WO2003064940A1/ja active Application Filing
- 2003-01-27 CN CNB038027569A patent/CN1283964C/zh not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61231370A (ja) | 1985-04-08 | 1986-10-15 | 株式会社デンソー | 冷蔵庫 |
JPS61181271U (ja) | 1985-04-27 | 1986-11-12 | ||
JPS6373060A (ja) | 1986-09-13 | 1988-04-02 | ダイキン工業株式会社 | 冷凍装置 |
JPH03217771A (ja) | 1990-01-22 | 1991-09-25 | Sanyo Electric Co Ltd | 空気調和装置 |
JPH10288408A (ja) | 1997-04-10 | 1998-10-27 | Yaskawa Electric Corp | 省エネルギー冷凍システムの制御方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9027363B2 (en) | 2008-02-01 | 2015-05-12 | Daikin Industries, Ltd. | Economizer having multiple liquid outlets and multiple float expansion valves |
US9915451B2 (en) | 2013-02-19 | 2018-03-13 | Carrier Corporation | Level control in an evaporator |
WO2016194185A1 (ja) * | 2015-06-03 | 2016-12-08 | 三菱電機株式会社 | 冷凍サイクル装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1477748A4 (en) | 2012-08-15 |
CN1623071A (zh) | 2005-06-01 |
JP2003214729A (ja) | 2003-07-30 |
CN1283964C (zh) | 2006-11-08 |
EP1477748A1 (en) | 2004-11-17 |
ES2427796T3 (es) | 2013-11-04 |
EP1477748B1 (en) | 2013-09-04 |
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