WO2007083794A1 - 空気調和装置 - Google Patents
空気調和装置 Download PDFInfo
- Publication number
- WO2007083794A1 WO2007083794A1 PCT/JP2007/050908 JP2007050908W WO2007083794A1 WO 2007083794 A1 WO2007083794 A1 WO 2007083794A1 JP 2007050908 W JP2007050908 W JP 2007050908W WO 2007083794 A1 WO2007083794 A1 WO 2007083794A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- refrigerant
- electric expansion
- compressor
- indoor heat
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 claims description 90
- 238000001514 detection method Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 238000004378 air conditioning Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims description 9
- 239000002826 coolant Substances 0.000 abstract 6
- 239000007788 liquid Substances 0.000 description 16
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
- 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
- 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
- F25B41/385—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
- 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
- F25B49/025—Motor 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
- F25B2313/027—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
-
- 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
- F25B2500/27—Problems to be solved characterised by the stop of the refrigeration 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
- 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
- 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
- F25B2700/21151—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 including a plurality of electric expansion valves.
- An air conditioner includes a refrigeration cycle in which a compressor, an outdoor heat exchanger, a decompressor, an indoor heat exchanger, and the like are sequentially connected by piping.
- a refrigerant charged in this refrigeration cycle a high-pressure R410 refrigerant is known.
- a large capacity air conditioner that uses this R410 refrigerant and controls the flow rate of refrigerant in a wide range, it is necessary to use a large electric expansion valve (PMV) as a pressure reducer.
- PMV electric expansion valve
- each electric expansion valve is fully closed as the compressor stops.
- the refrigerant flow path on the outdoor heat exchanger side tends to be in a liquid-sealed state in which the refrigerant is filled with liquid refrigerant. If this liquid seal state occurs, the pressure of the refrigerant accumulated there may be abnormally increased due to an increase in the outside air temperature. If the refrigerant pressure rises abnormally, in the worst case, the components of the refrigeration cycle will be damaged.
- An object of the present invention is to provide a highly reliable air conditioner that can avoid an abnormal increase in refrigerant pressure due to a liquid seal state.
- the air conditioner of the present invention is
- a refrigeration cycle having at least one compressor that sucks in the refrigerant and compresses and discharges the refrigerant, and returns the refrigerant discharged from the compressor through the outdoor heat exchange and the indoor heat exchange to the compressor;
- FIG. 1 is a diagram showing an overall configuration of an embodiment.
- FIG. 2 is a diagram showing a closed state of each electric expansion valve according to one embodiment.
- FIG. 3 is a diagram showing an open state of each electric expansion valve according to one embodiment.
- FIG. 4 is a flowchart for explaining the operation of one embodiment.
- FIG. 5 is a diagram showing a refrigerant flow in a liquid-sealed state according to one embodiment.
- the air conditioner 1 includes an outdoor unit 2 and an indoor unit 3.
- the outdoor unit 2 includes a gas pipe service valve 200A and a liquid pipe service valve 200B.
- the indoor unit 3 is connected to these service valves 200A and 200B via a gas pipe 100A and a liquid pipe 100B.
- the outdoor unit 2 and the indoor unit 3 are provided with a heat pump refrigeration cycle.
- This refrigeration cycle has at least one compressor 4 that sucks in refrigerant and compresses and discharges it.
- the refrigerant discharged from the compressor 4 has a backflow prevention valve 15, a four-way valve 5, and outdoor heat exchange. 6, shunt 7, receiver tank 8, decompressor 9, liquid pipe service valve 200 B, liquid pipe 100 B, indoor heat exchanger 12, gas pipe 100 A, gas pipe service solenoid 200 A, four-way valve 5, a cooling cycle is formed through the accumulator 13 and the sub-accumulator 1 4 and back to the compressor 4.
- switching of the four-way valve 5 causes the refrigerant discharged from the compressor 4 to flow back-flow prevention valve 15, four-way valve 5, gas pipe service bar.
- Lub 200A, gas pipe 100A, indoor heat exchange ⁇ 12, liquid pipe 100B, liquid pipe service valve 200 B, pressure reducing device 9, receiver tank 8, flow divider 7, outdoor heat exchanger 6, four-way valve 5, accumulator 13, and a heating cycle is formed through the sub-accumulator 14 and back to the compressor 4.
- the R410 refrigerant having a high pressure is used as the refrigerant.
- the decompression device 9 includes a first electric expansion valve 10 and a second electric expansion valve 11 that are connected in parallel in opposite directions.
- the electric expansion valves 10 and 11 are pulse motor valves (PMVs) whose opening degree changes continuously according to the number of input drive pulses, as shown in FIG. 2 and FIG.
- the first connecting pipe 31, the valve seat 32 communicating with the first connecting pipe 31, the one-dollar valve 33 for opening and closing the valve seat 32, and the valve seat 32 side with respect to the one-dollar valve 33 A coil spring 34 that gives a biasing force of the above, a second connecting pipe 35 that communicates with the valve seat 32 when the valve seat 32 is opened, a rod (not shown) for vertically moving the dollar valve 33, And a pulse motor (not shown) for rotating the rod.
- the rotor moves up and down while rotating, so that the opening, which is a gap between the needle valve 33 and the valve seat 32, changes.
- the needle valve 33 When the pulse motor is not in operation, as shown in FIG. 2, the needle valve 33 receives the biasing force of the coil spring 34 and comes into contact with the valve seat 32, and the valve seat 32 is closed and fully closed. Become. However, when the refrigerant pressure on the second connection pipe 35 side becomes greater than the refrigerant pressure on the first connection pipe 31 side by a predetermined value or more when fully closed at the time of non-operation, as shown in FIG. Pile to the biasing force of the group 34 and away from the valve seat 32, the valve seat 32 is opened and the fully closed state is released. As a result, the side force of the second connecting pipe 35 also causes a flow of directional refrigerant on the first connecting pipe 31 side.
- the outdoor unit 2 includes an outdoor fan 16.
- the outdoor fan 16 sucks outdoor air, passes the sucked air through the outdoor heat exchanger 6, and discharges the air outside.
- the indoor unit 3 has an indoor fan 17.
- the indoor fan 17 sucks indoor air, passes the sucked air through the indoor heat exchanger 12 and discharges it into the room.
- An indoor temperature sensor 21 for detecting the indoor temperature Ta is provided in the air intake path for indoor air by the indoor fan 17.
- a heat exchanger temperature sensor 22 that detects the heat exchanger temperature is attached to the indoor heat exchanger. ing.
- a refrigerant temperature sensor 23 that detects the temperature of the refrigerant discharged from the compressor 4 is attached to the high-pressure side pipe between the discharge port of the compressor 4 and the four-way valve 5.
- a refrigerant temperature sensor 24 that detects the temperature of the refrigerant sucked into the compressor 4 is attached to the low-pressure side pipe between the four-way valve 5 and the accumulator 13.
- An outdoor temperature sensor 25 for detecting the outside air temperature is attached to the outdoor air suction air passage by the outdoor fan 16.
- a heat exchange temperature sensor 26 for detecting the heat exchange temperature is attached between the outdoor heat exchange 6 and the shunt 7.
- the compressor 4, the four-way valve 5, the electric expansion valves 10 and 11, the outdoor fan 16, the indoor fan 17, and temperature sensors 21 to 26 are connected to the controller 20.
- the controller 20 includes an inverter that outputs driving power to the compressor 4, and includes the following sections (1) to (7) as main functions.
- a first control section that forms the cooling cycle during cooling and forms the heating cycle during heating.
- a first detection section that detects a difference between the detection temperature Ta of the room temperature sensor 25 and a predetermined set temperature Ts as an air conditioning load.
- a second control section that controls the output frequency of the inverter according to the air conditioning load detected in the first detection section.
- the rotation speed (capacity) of the compressor 4 changes as the output frequency of the inverter changes.
- a second detection section that detects the superheat degree SH of the refrigerant in the indoor heat exchanger 12 during cooling.
- a third detection section for detecting the degree of superheat SH of the refrigerant in the outdoor heat exchanger 6 during heating.
- the flow path of the four-way valve 5 is set to the state of the solid line in FIG. 1, and a cooling cycle is formed in which the outdoor heat exchanger 6 functions as a condenser and the indoor heat exchanger 12 functions as an evaporator. .
- the flow path of the four-way valve 5 is switched to the state of the broken line in FIG. 1 to form a heating cycle in which the indoor heat exchange functions as a condenser and the outdoor heat exchange 6 functions as an evaporator.
- the difference between the detected temperature Ta of the room temperature sensor 21 and a preset temperature T is detected as an air conditioning load, and the output frequency of the inverter is controlled according to the air conditioning load. Is done. That is, the air-conditioning load force, in other words, the inverter output frequency is set low, and the inverter output frequency increases as the air-conditioning load increases.
- the air conditioning load decreases, the output frequency of the inverter is lowered.
- the rotation speed (capacity) of the compressor 4 changes.
- the air conditioning load becomes zero, the inverter output frequency also becomes zero and the compressor 4 stops.
- the superheat degree SH of the refrigerant in the evaporator is detected (step 102). That is, during cooling, the refrigerant temperature Tc on the inlet side of the indoor heat exchanger 12 that functions as an evaporator is detected by the heat exchanger temperature sensor 22, and the refrigerant temperature Ts that has passed through the indoor heat exchanger 12 is the refrigerant temperature. The difference between the detected temperature Tc and the detected temperature Ts is detected as the superheat degree SH of the refrigerant.
- the temperature Te of the refrigerant on the inlet side of the outdoor heat exchanger 6 that functions as an evaporator is detected by the heat exchanger temperature sensor 26, and the refrigerant temperature Ts that has passed the outdoor heat exchanger 6 is the refrigerant temperature sensor.
- the difference between the detected temperature Te and the detected temperature Ts is detected as the superheat degree SH of the refrigerant.
- the detected superheat degree SH is compared with a predetermined target superheat degree SHs (for example, 1 to 5K), and the electric expansion valves 10 and 11 are controlled so that the superheat degree SH becomes the target superheat degree SHs. At least one opening is controlled (step 103).
- a predetermined target superheat degree SHs for example, 1 to 5K
- the opening degree to increase the superheat degree SH is adjusted in the reduction direction, and the refrigerant flow rate is reduced.
- the opening degree to reduce the superheat degree SH is adjusted in the increasing direction, and the refrigerant flow rate is increased.
- the second electric expansion valve 20 is set to a predetermined minimum. With the opening set (for example, 50 pulses), the opening of the first electric expansion valve 10 is adjusted. If the adjustment range of the opening exceeds the opening adjustment range of the first electric expansion valve 10, the second electric expansion valve 11 is set with the first electric expansion valve 10 set to the maximum opening (500 pulses). The opening of is adjusted.
- the adjustment range of the opening is within the opening adjustment range (for example, 500 pulses) of the second electric expansion valve 11, the first electric expansion valve 10 is set to a predetermined minimum opening (for example, 50 degrees), the opening degree of the second electric expansion valve 11 is adjusted. If the adjustment range of the opening exceeds the opening adjustment range of the second electric expansion valve 11, the first electric expansion valve with the second electric expansion valve 11 set to the maximum opening (500 pulses) The opening of 10 is adjusted.
- the refrigerant flow path from the backflow prevention valve 15 to the electric expansion valves 10 and 11 via the outdoor heat exchanger 6 is increased. It tends to be in a liquid-sealed state filled with liquid refrigerant.
- the first electric expansion valve 10 opens due to the refrigerant pressure, and as shown by the solid line arrow in FIG. 5, the first electric expansion valve 10 From the first connecting pipe 31 (outdoor heat exchange 6 side), a directional refrigerant flows from the second connecting pipe 35 (indoor heat exchanger 12 side). This refrigerant flow avoids an abnormal increase in refrigerant pressure. As a result, damage to the outdoor heat exchanger 6 and the receiver tank 8 can be prevented, and the reliability is improved.
- the electric expansion valves 10 and 11 are both set to the minimum opening (50 pulses) until a predetermined time elapses, and the refrigerant flows to the indoor heat exchanger 12 side.
- the electric expansion valves 10 and 11 may be fully closed. As a result, the liquid seal state is less likely to occur and the reliability is further improved.
- the electric expansion valves 10 and 11 are fully closed and the service valves 200A and 200B are closed, so the electric expansion valves 10 and 11 and the liquid pipe service valve
- the piping between 200B is easily filled with a liquid refrigerant and is in a liquid-sealed state.
- the second electric expansion valve 11 is opened by the refrigerant pressure, and the first electric expansion valve 11 of the second electric expansion valve 11 is opened as shown by a broken line arrow in FIG.
- the refrigerant flows toward the second connection pipe 35 (outdoor heat exchange 6 side) from the connecting pipe 31 (liquid pipe service valve 200B side).
- the air conditioner of the present invention can be used for a refrigeration apparatus having a plurality of electric expansion valves in a refrigeration cycle.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07707171.0A EP1988345A4 (en) | 2006-01-20 | 2007-01-22 | AIR CONDITIONER |
JP2007554998A JPWO2007083794A1 (ja) | 2006-01-20 | 2007-01-22 | 空気調和装置 |
CN2007800026565A CN101484761B (zh) | 2006-01-20 | 2007-01-22 | 空调装置 |
US12/175,028 US7797956B2 (en) | 2006-01-20 | 2008-07-17 | Air conditioning apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-012201 | 2006-01-20 | ||
JP2006012201 | 2006-01-20 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/175,028 Continuation US7797956B2 (en) | 2006-01-20 | 2008-07-17 | Air conditioning apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007083794A1 true WO2007083794A1 (ja) | 2007-07-26 |
Family
ID=38287736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/050908 WO2007083794A1 (ja) | 2006-01-20 | 2007-01-22 | 空気調和装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7797956B2 (ja) |
EP (1) | EP1988345A4 (ja) |
JP (1) | JPWO2007083794A1 (ja) |
KR (1) | KR101005678B1 (ja) |
CN (1) | CN101484761B (ja) |
WO (1) | WO2007083794A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010175204A (ja) * | 2009-01-30 | 2010-08-12 | Fujitsu General Ltd | 冷凍空調装置 |
WO2014199855A1 (ja) * | 2013-06-11 | 2014-12-18 | ダイキン工業株式会社 | 空気調和装置 |
WO2021065113A1 (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 冷凍装置および熱源ユニット |
JP2021055921A (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 熱源ユニット及び冷凍装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9086232B1 (en) | 2010-01-18 | 2015-07-21 | Robert Michael Read | Refrigeration system having supplemental refrigerant path |
WO2012027241A1 (en) * | 2010-08-23 | 2012-03-01 | Carrier Corporation | Electric expansion valve control for a refrigeration system |
WO2012032587A1 (ja) * | 2010-09-10 | 2012-03-15 | 三菱電機株式会社 | 車両用空調装置の更新方法、車両用空調装置 |
WO2013114461A1 (ja) * | 2012-02-02 | 2013-08-08 | 三菱電機株式会社 | 空気調和装置及び鉄道車両用空気調和装置 |
JP5780280B2 (ja) * | 2013-09-30 | 2015-09-16 | ダイキン工業株式会社 | 空調システム及びその制御方法 |
US20180259081A1 (en) * | 2015-11-06 | 2018-09-13 | Hitachi, Ltd. | Valve structure, and hydraulic device, fluid machine, and machine, each having same |
US20170191718A1 (en) | 2016-01-06 | 2017-07-06 | Johnson Controls Technology Company | Vapor compression system |
US10816248B2 (en) * | 2016-06-09 | 2020-10-27 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
CN107576090B (zh) * | 2017-08-21 | 2023-11-17 | 珠海格力电器股份有限公司 | 一种制冷系统 |
CN108224846B (zh) * | 2017-12-30 | 2020-10-13 | 广东芬尼克兹节能设备有限公司 | 一种双阀热泵系统的控制方法及系统 |
CN113446706B (zh) * | 2020-03-25 | 2022-08-19 | 青岛海尔空调电子有限公司 | 空调器控制方法和空调器 |
DE102022109795A1 (de) | 2022-04-22 | 2023-10-26 | Ratiotherm GmbH & Co. KG | Gebäudeheizung und/oder -kühlung mit einer Wärmepumpe |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003214729A (ja) * | 2002-01-28 | 2003-07-30 | Toshiba Kyaria Kk | 空気調和機 |
JP2005121333A (ja) * | 2003-10-20 | 2005-05-12 | Hitachi Ltd | 空気調和装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1021926C (zh) * | 1990-10-06 | 1993-08-25 | 邓永林 | 压差式膨胀阀 |
CN2113442U (zh) * | 1992-03-13 | 1992-08-19 | 边瑞宏 | 冰箱制冷系统节流装置 |
JP3487241B2 (ja) * | 1999-10-29 | 2004-01-13 | ダイキン工業株式会社 | 冷凍装置 |
JP2005291555A (ja) * | 2004-03-31 | 2005-10-20 | Mitsubishi Heavy Ind Ltd | 空気調和機 |
-
2007
- 2007-01-22 WO PCT/JP2007/050908 patent/WO2007083794A1/ja active Application Filing
- 2007-01-22 CN CN2007800026565A patent/CN101484761B/zh not_active Expired - Fee Related
- 2007-01-22 KR KR1020087017532A patent/KR101005678B1/ko not_active IP Right Cessation
- 2007-01-22 EP EP07707171.0A patent/EP1988345A4/en not_active Withdrawn
- 2007-01-22 JP JP2007554998A patent/JPWO2007083794A1/ja active Pending
-
2008
- 2008-07-17 US US12/175,028 patent/US7797956B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003214729A (ja) * | 2002-01-28 | 2003-07-30 | Toshiba Kyaria Kk | 空気調和機 |
JP2005121333A (ja) * | 2003-10-20 | 2005-05-12 | Hitachi Ltd | 空気調和装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1988345A4 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010175204A (ja) * | 2009-01-30 | 2010-08-12 | Fujitsu General Ltd | 冷凍空調装置 |
WO2014199855A1 (ja) * | 2013-06-11 | 2014-12-18 | ダイキン工業株式会社 | 空気調和装置 |
JP2015017795A (ja) * | 2013-06-11 | 2015-01-29 | ダイキン工業株式会社 | 空気調和装置 |
EP3009773A1 (en) * | 2013-06-11 | 2016-04-20 | Daikin Industries, Ltd. | Air conditioner |
EP3009773A4 (en) * | 2013-06-11 | 2016-05-18 | Daikin Ind Ltd | AIR CONDITIONER |
WO2021065113A1 (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 冷凍装置および熱源ユニット |
JP2021055920A (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 冷凍装置および熱源ユニット |
JP2021055921A (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 熱源ユニット及び冷凍装置 |
WO2021065117A1 (ja) * | 2019-09-30 | 2021-04-08 | ダイキン工業株式会社 | 熱源ユニット及び冷凍装置 |
JP2021103081A (ja) * | 2019-09-30 | 2021-07-15 | ダイキン工業株式会社 | 熱源ユニット及び冷凍装置 |
JP2021105511A (ja) * | 2019-09-30 | 2021-07-26 | ダイキン工業株式会社 | 冷凍装置および熱源ユニット |
JP7116346B2 (ja) | 2019-09-30 | 2022-08-10 | ダイキン工業株式会社 | 熱源ユニット及び冷凍装置 |
EP4030120A4 (en) * | 2019-09-30 | 2023-01-04 | Daikin Industries, Ltd. | FREEZER AND HEAT SOURCE UNIT |
Also Published As
Publication number | Publication date |
---|---|
EP1988345A4 (en) | 2016-10-26 |
KR20080085877A (ko) | 2008-09-24 |
CN101484761A (zh) | 2009-07-15 |
JPWO2007083794A1 (ja) | 2009-06-18 |
US7797956B2 (en) | 2010-09-21 |
US20080276635A1 (en) | 2008-11-13 |
EP1988345A1 (en) | 2008-11-05 |
CN101484761B (zh) | 2012-07-18 |
KR101005678B1 (ko) | 2011-01-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007083794A1 (ja) | 空気調和装置 | |
US8006504B2 (en) | Air conditioning system | |
CN111164360B (zh) | 空气调节装置 | |
EP3279580B1 (en) | Air-conditioning device | |
KR101479458B1 (ko) | 냉동 장치 | |
US20090158764A1 (en) | Air conditioning system | |
EP2015004B1 (en) | Air conditioner | |
EP3073211B9 (en) | Refrigeration cycle equipment | |
EP1998123A1 (en) | Refrigerating apparatus | |
WO2000036347A1 (fr) | Refrigerateur | |
JP3982557B2 (ja) | 空気調和機 | |
WO2008069265A1 (ja) | 空気調和装置 | |
WO2020203708A1 (ja) | 冷凍サイクル装置 | |
JP2012127518A (ja) | 空気調和機 | |
JP6076583B2 (ja) | ヒートポンプ | |
JP5846759B2 (ja) | 空気調和装置 | |
JPH07120091A (ja) | 空気調和機 | |
JP2006038363A (ja) | エンジン駆動式空気調和装置及びその制御方法 | |
CN113614469A (zh) | 空调装置 | |
JP3420652B2 (ja) | 空気調和機 | |
JP2002243240A (ja) | 冷凍装置 | |
US11598549B2 (en) | Thermal cycling system and control method of the thermal cycling system | |
JP2882172B2 (ja) | 空気調和機 | |
JPH05280810A (ja) | 空気調和機 | |
WO2016129027A1 (ja) | 空気調和装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780002656.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2007554998 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2007707171 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007707171 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 6256/DELNP/2008 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020087017532 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |