EP2416090A1 - Mehrfach-klimaanlage - Google Patents

Mehrfach-klimaanlage Download PDF

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Publication number
EP2416090A1
EP2416090A1 EP10758493A EP10758493A EP2416090A1 EP 2416090 A1 EP2416090 A1 EP 2416090A1 EP 10758493 A EP10758493 A EP 10758493A EP 10758493 A EP10758493 A EP 10758493A EP 2416090 A1 EP2416090 A1 EP 2416090A1
Authority
EP
European Patent Office
Prior art keywords
electromagnetic
outdoor unit
valves
valve
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10758493A
Other languages
English (en)
French (fr)
Other versions
EP2416090A4 (de
Inventor
Tatsuhiro Yasuda
Shinichi Isozumi
Keisuke Mitoma
Masashi Maeno
Satoshi Watanabe
Yoichi Uefuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP2416090A1 publication Critical patent/EP2416090A1/de
Publication of EP2416090A4 publication Critical patent/EP2416090A4/de
Withdrawn legal-status Critical Current

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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
    • F25B41/37—Capillary tubes
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • 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
    • F25B2313/005—Outdoor unit 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B2500/06—Damage
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2519—On-off 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
    • F25B2700/19—Pressures
    • F25B2700/191—Pressures near an expansion valve

Definitions

  • the present invention relates to multi-unit air conditioners, and particularly, to a multi-unit air conditioner in which a head difference of a liquid coolant occurs between an outdoor unit and an indoor unit disposed below the outdoor unit.
  • a known example of a multi-unit air conditioner in which a head difference of a liquid coolant occurs between an outdoor unit and an indoor unit disposed below the outdoor unit is a type having an electronic expansion valve disposed in front of (i.e., at the inlet of) an indoor heat exchanger (for example, see PTL 1).
  • the present invention provides a multi-unit air conditioner that can reduce the liquid head pressure applied to the electronic expansion valve disposed in front (i.e., at the inlet) of the indoor heat exchanger so as to prevent failure in opening and closing (operation failure) of the electronic expansion valve.
  • the multi-unit air conditioner includes a single outdoor unit and a plurality of indoor units disposed below the outdoor unit and connected to the outdoor unit via a coolant pipe.
  • a decompressing mechanism including at least two electromagnetic on-off valves and at least two capillary tubes is provided near an outlet, for cooling operation, of the outdoor unit.
  • a unit constituted of each electromagnetic on-off valve and the corresponding capillary tube connected to the electromagnetic on-off valve is arranged in parallel with the coolant pipe.
  • the multi-unit air conditioner includes a single outdoor unit and a plurality of indoor units disposed below the outdoor unit and connected to the outdoor unit via a coolant pipe.
  • a decompressing mechanism including three electromagnetic on-off valves and three capillary tubes having different lengths is provided near an outlet, for cooling operation, of the outdoor unit.
  • a unit constituted of each electromagnetic on-off valve and each capillary tube connected to the electromagnetic on-off valve is arranged in parallel with the coolant pipe.
  • the lengths of the capillary tubes are set such that, for example, the decompression effect is “1" when all the capillary tubes are used by opening all the electromagnetic on-off valves, the decompression effect is "1/10" when the capillary tube with the largest length (referred to as “longest capillary tube” hereinafter) is used alone by only opening the electromagnetic on-off valve connected to the longest capillary tube, the decompression effect is "6/10" when the capillary tube with the smallest length (referred to as “shortest capillary tube” hereinafter) is used alone by only opening the electromagnetic on-off valve connected to the shortest capillary tube, and the decompression effect is "3/10" when the capillary tube (referred to as “intermediate-length capillary tube” hereinafter) that is shorter than the longest capillary tube but longer than the shortest capillary tube is used alone by only opening the electromagnetic on-off valve connected to the aforementioned ca
  • the decompression effect is "4/10" when the longest capillary tube and the intermediate-length capillary tube are used by opening the electromagnetic on-off valves connected to the longest capillary tube and the intermediate-length capillary tube, the decompression effect is "7/10" when the longest capillary tube and the shortest capillary tube are used by opening the electromagnetic on-off valves connected to the longest capillary tube and the shortest capillary tube, and the decompression effect is "9/10" when the intermediate-length capillary tube and the shortest capillary tube are used by opening the electromagnetic on-off valves connected to the intermediate-length capillary tube and the shortest capillary tube.
  • the pressure of liquid coolant supplied (introduced) from the outdoor unit to the indoor units can be reduced in several patterns. Consequently, a liquid head pressure applied to an electronic expansion valve disposed in front (at the inlet) of an indoor heat exchanger can be reduced, thereby preventing failure in opening and closing (operation failure) of the electronic expansion valve.
  • the electromagnetic on-off valves be electrically connected to a controller that individually opens or closes the electromagnetic on-off valves, and that the controller open or close the electromagnetic on-off valves on the basis of a coolant pressure near the outlet of the outdoor unit during cooling operation, and also on the basis of the rotation speed of a compressor that constitutes the outdoor unit.
  • the electromagnetic on-off valves are immediately opened or closed on the basis of the coolant pressure near the outlet of the outdoor unit during cooling operation and also on the basis of the rotation speed of the compressor constituting the outdoor unit, so that the liquid head pressure applied to the electronic expansion valve disposed in front of the indoor heat exchanger can be maintained at an optimal pressure value. Consequently, the electronic expansion valve disposed in front of the indoor heat exchanger can be prevented from receiving an excessive liquid head pressure, thereby reliably preventing failure in opening and closing (operation failure) of the electronic expansion valve.
  • the multi-unit air conditioner according to the present invention achieves the advantage of reducing a liquid head pressure applied to an electronic expansion valve disposed in front (at the inlet) of an indoor heat exchanger so as to prevent failure in opening and closing (operation failure) of the electronic expansion valve.
  • Fig. 1 is a schematic system view of the multi-unit air conditioner according to this embodiment.
  • Fig. 2 is an enlarged view of a relevant part of Fig. 1 .
  • Fig. 3 is a table for explaining the lengths of capillary tubes and decompression effects thereof.
  • Figs. 4A and 4B are graphs in which data stored as a database in a controller are visualized. Specifically, Fig. 4A is a graph corresponding to when a measurement value measured by a high-pressure sensor is higher than a preset value, whereas Fig.
  • a multi-unit air conditioner 1 includes a single outdoor unit 2 and a plurality of (e.g., two) indoor units 3.
  • the outdoor unit 2 is, for example, disposed on a rooftop of a tall building, and includes a compressor 4, a four-way valve 5, an outdoor heat exchanger 6, an outdoor fan (not shown), and a decompressing mechanism 7.
  • the indoor units 3 are disposed inside a room located at a level (floor) that is, for example, 100 m below the rooftop at which the outdoor unit 2 is disposed, and each include an indoor heat exchanger (not shown) and an indoor fan (not shown).
  • the outdoor unit 2 and the indoor units 3 are connected via a coolant pipe 8, and a liquid control valve 9 is connected to an intermediate section of the coolant pipe 8 connected between the decompressing mechanism 7 and the indoor units 3.
  • the liquid control valve 9 is disposed in the vicinity (i.e., at the outlet) of the outdoor unit 2, and a high-pressure sensor 10 for measuring the pressure in the pipe is attached to an intermediate section of the coolant pipe 8 connected between the decompressing mechanism 7 and the liquid control valve 9.
  • the high-pressure sensor 10 is electrically connected to a controller 28, to be described later, and a measurement value (referred to as "high-pressure-sensor value” hereinafter) measured by the high-pressure sensor 10 is converted to an electrical signal before being output to the controller 28.
  • Electronic expansion valves 11 are connected to intermediate sections of the coolant pipe 8 connected between the liquid control valve 9 and the indoor units 3. Each electronic expansion valve (referred to as "EEV” hereinafter) 11 is disposed in the vicinity (i.e., at the inlet) of the corresponding indoor unit 3.
  • the decompressing mechanism 7 includes a single check valve 21, a plurality of (e.g., three in this embodiment) electromagnetic on-off valves 22, 23, and 24, and a plurality of (three in this embodiment) capillary tubes 25, 26, and 27 having different lengths.
  • the electromagnetic on-off valve 22 is connected to the capillary tube 25, the electromagnetic on-off valve 23 is connected to the capillary tube 26, and the electromagnetic on-off valve 24 is connected to the capillary tube 27.
  • the check valve 21, the electromagnetic on-off valve 22 and the capillary tube 25, the electromagnetic on-off valve 23 and the capillary tube 26, and the electromagnetic on-off valve 24 and the capillary tube 27 are arranged in parallel via the coolant pipe 8.
  • the electromagnetic on-off valves 22, 23, and 24 are electrically connected to the controller 28 such that the opening and closing thereof are controlled by an electrical signal output from the controller 28.
  • the check valve 21 is attached in a direction such that it permits flow from the liquid control valve 9 toward the outdoor heat exchanger 6 but inhibits flow from the outdoor heat exchanger 6 toward the liquid control valve 9.
  • the lengths of the capillary tubes 25, 26, and 27 are set such that, for example, the decompression effect is "1" when all the capillary tubes 25, 26, and 27 are used by opening all the electromagnetic on-off valves 22, 23, and 24 (see row 7 in Fig. 3 ), the decompression effect is "1/10" when the capillary tube 25 is used alone by only opening the electromagnetic on-off valve 22 (see row 1 in Fig. 3 ), the decompression effect is "3/10" when the capillary tube 26 is used alone by only opening the electromagnetic on-off valve 23 (see row 2 in Fig. 3 ), and the decompression effect is "6/10" when the capillary tube 27 is used alone by only opening the electromagnetic on-off valve 24 (see row 4 in Fig. 3 ).
  • the decompression effect is "4/10" when the capillary tubes 25 and 26 are used by opening the electromagnetic on-off valves 22 and 23 (see row 3 in Fig. 3 ), the decompression effect is "7/10" when the capillary tubes 25 and 27 are used by opening the electromagnetic on-off valves 22 and 24 (see row 5 in Fig. 3 ), and the decompression effect is "9/10" when the capillary tubes 26 and 27 are used by opening the electromagnetic on-off valves 23 and 24 (see row 6 in Fig. 3 ).
  • the controller 28 stores (accumulates) a database obtained by converting the graphs shown in Figs. 4A and 4B into data.
  • the controller 28 opens or closes the electromagnetic on-off valves 22, 23, and 24 in accordance with a flow chart shown in Fig. 5 so as to adjust the pressure in front (at the inlets) of the EEVs 11.
  • the controller 28 opens or closes the electromagnetic on-off valves 22, 23, and 24 by selecting the electromagnetic on-off valves 22, 23, and 24 and the capillary tubes 25, 26, and 27 to be used on the basis of the database stored in the controller 28 so that the pressure in front (at the inlets) of the EEVs 11 becomes equal to a desired pressure value.
  • the capillary tubes 25 and 27 are used by opening the electromagnetic on-off valves 22 and 24.
  • the capillary tube 26 is used alone by only opening the electromagnetic on-off valve 23.
  • the lengths of the capillary tubes 25, 26, and 27 are set such that, for example, the decompression effect is "1" when all the capillary tubes 25, 26, and 27 are used by opening all the electromagnetic on-off valves 22, 23, and 24, the decompression effect is "1/10” when the longest capillary tube 25 is used alone by only opening the electromagnetic on-off valve 22 connected to the capillary tube 25, the decompression effect is "6/10" when the shortest capillary tube 27 is used alone by only opening the electromagnetic on-off valve 24 connected to the capillary tube 27, and the decompression effect is "3/10" when the capillary tube 26 that is shorter than the capillary tube 25 but longer than the capillary tube 27 is used alone by only opening the electromagnetic on-off valve 23 connected to the capillary tube 26.
  • the decompression effect is "4/10" when the capillary tubes 25 and 26 are used by opening the electromagnetic on-off valves 22 and 23 respectively connected to the capillary tubes 25 and 26, the decompression effect is “7/10” when the capillary tubes 25 and 27 are used by opening the electromagnetic on-off valves 22 and 24 respectively connected to the capillary tubes 25 and 27, and the decompression effect is “9/10” when the capillary tubes 26 and 27 are used by opening the electromagnetic on-off valves 23 and 24 respectively connected to the capillary tubes 26 and 27.
  • the pressure of liquid coolant supplied (introduced) from the outdoor unit 2 to the indoor units 3 can be reduced in several patterns. Consequently, a liquid head pressure applied to the EEVs 11 disposed in front (at the inlets) of the indoor heat exchangers can be reduced, thereby preventing failure in opening and closing (operation failure) of the EEVs 11.
  • the electromagnetic on-off valves 22, 23, and 24 are electrically connected to the controller 28 that individually opens or closes the electromagnetic on-off valves 22, 23, and 24, and the controller 28 is configured to open or close the electromagnetic on-off valves 22, 23, and 24 on the basis of the coolant pressure near the outlet of the outdoor unit 2 during cooling operation and also on the basis of the rotation speed of the compressor 4 constituting the outdoor unit 2.
  • the electromagnetic on-off valves 22, 23, and 24 are immediately opened or closed on the basis of the coolant pressure near the outlet of the outdoor unit 2 during cooling operation and also on the basis of the rotation speed of the compressor 4 constituting the outdoor unit 2, so that the liquid head pressure applied to the EEVs 11 disposed in front of the indoor heat exchangers can be maintained at an optimal pressure value. Consequently, the EEVs 11 disposed in front of the indoor heat exchangers can be prevented from receiving an excessive liquid head pressure, thereby reliably preventing failure in opening and closing (operation failure) of the EEVs 11.
  • the present invention is not limited to the above-described embodiment, and permits various modifications and alterations so long as they do not depart from the spirit of the invention.
  • the above-described embodiment is directed to a specific example of the decompressing mechanism 7 having the three electromagnetic on-off valves 22, 23, and 24 and the three capillary tubes 25, 26, and 27 having different lengths.
  • the decompressing mechanism 7 may alternatively be of a type that includes three electromagnetic on-off valves and three capillary tubes having the same length, a type that includes two electromagnetic on-off valves and two capillary tubes having different lengths, a type that includes two electromagnetic on-off valves and two capillary tubes having the same length, a type that includes four or more electromagnetic on-off valves and four or more capillary tubes having different lengths, or a type that includes four or more electromagnetic on-off valves and four or more capillary tubes having the same length.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
EP10758493.0A 2009-03-30 2010-03-24 Mehrfach-klimaanlage Withdrawn EP2416090A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009083370A JP5489507B2 (ja) 2009-03-30 2009-03-30 マルチ型空気調和機
PCT/JP2010/055063 WO2010113719A1 (ja) 2009-03-30 2010-03-24 マルチ型空気調和機

Publications (2)

Publication Number Publication Date
EP2416090A1 true EP2416090A1 (de) 2012-02-08
EP2416090A4 EP2416090A4 (de) 2017-08-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10758493.0A Withdrawn EP2416090A4 (de) 2009-03-30 2010-03-24 Mehrfach-klimaanlage

Country Status (4)

Country Link
EP (1) EP2416090A4 (de)
JP (1) JP5489507B2 (de)
CN (1) CN102165272B (de)
WO (1) WO2010113719A1 (de)

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CN102635927B (zh) * 2012-04-26 2018-05-11 青岛海尔空调电子有限公司 用于空调系统的压力调整装置和方法
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CN103486691B (zh) * 2013-09-17 2015-09-30 青岛海信日立空调系统有限公司 多联机空调系统的制冷剂流量控制方法和装置
WO2015149413A1 (zh) * 2014-03-31 2015-10-08 广东科龙空调器有限公司 毛细管节流装置及制冷设备
CN105091425B (zh) * 2014-04-18 2018-05-15 广东科龙空调器有限公司 毛细管节流装置及制冷设备
CN104456739B (zh) * 2014-12-26 2017-03-01 珠海格力电器股份有限公司 一种空调系统及控制方法
CN107284193B (zh) * 2016-03-31 2022-06-14 杭州三花研究院有限公司 空调系统、该空调系统的控制系统及控制方法
CN106546039A (zh) * 2017-02-06 2017-03-29 刘勇 适用于极寒天气下的二氧化碳热泵膨胀节流装置及热泵
CN107091498B (zh) * 2017-05-11 2020-03-17 广东志高暖通设备股份有限公司 一种空调控制系统及多管组空调
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CN111895671A (zh) * 2019-05-05 2020-11-06 维谛技术有限公司 一种空调系统

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3051219A1 (de) * 2015-01-29 2016-08-03 Fujitsu General Limited Ausseneinheit einer klimaanlage und klimaanlage
US20160223240A1 (en) * 2015-01-29 2016-08-04 Fujitsu General Limited Outdoor unit of air conditioner and air conditioner
CN107894068A (zh) * 2017-11-14 2018-04-10 宁波奥克斯电气股份有限公司 一种空调运行状态调节方法与装置

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JP2010236727A (ja) 2010-10-21
JP5489507B2 (ja) 2014-05-14
CN102165272B (zh) 2014-10-29
WO2010113719A1 (ja) 2010-10-07
CN102165272A (zh) 2011-08-24
EP2416090A4 (de) 2017-08-16

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