WO2002053979A1 - Climatiseur et procede de commande de climatiseur - Google Patents
Climatiseur et procede de commande de climatiseur Download PDFInfo
- Publication number
- WO2002053979A1 WO2002053979A1 PCT/JP2001/011144 JP0111144W WO02053979A1 WO 2002053979 A1 WO2002053979 A1 WO 2002053979A1 JP 0111144 W JP0111144 W JP 0111144W WO 02053979 A1 WO02053979 A1 WO 02053979A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indoor
- heat exchanger
- compressor
- refrigerant
- temperature
- Prior art date
Links
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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- 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
-
- 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
- F25B2313/0232—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses
- F25B2313/02323—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses during heating
-
- 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
- F25B2313/029—Control issues
- F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
-
- 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
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
-
- 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
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- 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
- F25B2700/2115—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 a multi-type air conditioner having an outdoor unit and a plurality of indoor units, and a control method thereof.
- Each indoor unit is installed in an outdoor unit with a compressor and an outdoor heat exchanger, and in a multi-type air conditioner with multiple indoor units each having an indoor heat exchanger.
- the air conditioning load in the room is detected, and the number of rotations (operating frequency) of the compressor is controlled according to the sum of these air conditioning loads. Thereby, an optimum cooling capacity or heating capacity corresponding to the total of the air conditioning loads can be obtained.
- the refrigeration cycle of this air conditioner is filled with a sufficient amount of refrigerant so that there is no problem even if all the indoor units are operated at the same time.
- the refrigeration cycle is provided with a flow control valve (also called an electronic expansion valve) for each indoor unit.
- a flow control valve also called an electronic expansion valve
- the opening of each flow control valve is controlled such that the degree of superheat of the refrigerant in the outdoor heat exchanger (evaporator) maintains a constant value (also called superheat).
- the flow control valve If the flow control valve is in an excessively throttled state, the high pressure on the refrigeration cycle may rise abnormally. This abnormal increase in the high-side pressure adversely affects the components of the refrigeration cycle.
- the flow control valve when the flow control valve is over-restricted, the amount of refrigerant flowing through the indoor heat exchanger (condenser) during operation is reduced more than necessary. In this case, the temperature of the indoor heat exchanger changes in the decreasing direction and enters the undercooling region, and the temperature of the air blown into the room may decrease. This drop in the temperature of the blown air is uncomfortable for people indoors. Disclosure of the invention
- An object of an air conditioner according to a first aspect of the present invention is to prevent a flow control valve from being in an over-restricted state.
- FIG. 1 is a diagram showing a configuration of a refrigeration cycle of one embodiment.
- FIG. 2 is a block diagram of a control circuit of one embodiment.
- FIG. 3 is a flow chart for explaining the operation of the embodiment.
- FIG. 4 is a flowchart following FIG. ''
- FIG.5 is a flowchart following FIG.3 and FIG.4.
- FIG. 6 is a diagram showing control conditions based on the discharged refrigerant temperature in one embodiment.
- FIG. 7 is a diagram showing a format of a data table in one embodiment. BEST MODE FOR CARRYING OUT THE INVENTION
- a plurality of room units B1, B2, and B3 are connected to the outdoor unit A by pipes, and a multi-type heat pump refrigeration cycle is configured.
- the outdoor unit A has a compressor i, a four-way valve 2, and an outdoor heat exchanger 3.
- the indoor unit B 1 has an indoor heat exchanger 13.
- the indoor unit B 2 has an indoor heat exchanger 23.
- the indoor unit B 3 has an indoor heat exchanger 33.
- the outdoor heat exchanger 3 is connected to the discharge port of the compressor 1 via the four-way valve 2, and the outdoor heat exchanger 3 is connected to a flow control valve.
- Packed valve 1 2 is connected via 1 1. This no.
- the indoor heat exchanger 13 of the indoor unit B 1 is connected to the packed vanoreb 12, and the packed vanoleb 15 is connected to the indoor heat exchanger 13. Its to, Nono 0 click-de-Bas
- the suction port of the compressor 1 is connected to the lube 15 via the four-way valve 2.
- the packed valve 22 is connected to the outdoor heat exchanger 3 via the flow control valve 21, and the packed heat valve 22 is connected to the indoor heat exchanger 23 of the indoor unit 2.
- the packed heat exchanger 25 is connected to the indoor heat exchanger 23.
- the suction port of the compressor 1 is connected to 25 through the four-way valve 2.
- the flow control valves 11, 21, 31 are pulse motor valves (PMV) whose opening degree Q changes continuously according to the number of supplied driving voltage pulses (hereinafter referred to as pi). In addition, it has a function of adjusting the flow rate of the refrigerant by changing the opening degree.
- PMV pulse motor valves
- the refrigerant discharged from the compressor 1 receives the four-way valve 2 and the flow regulating valves 11, 21, 31, and the indoor heat exchangers 13, 23, as indicated by the solid arrows in the figure. 3
- a cooling cycle that returns to the compressor 1 through the four-way valve 2 is formed.
- the four-way valve 2 is switched, so that the refrigerant discharged from the compressor 1 is supplied to the four-way valve 2, the indoor heat exchangers 13, and 23, as indicated by broken arrows in the figure. , 3 3, Flow control valve 1 1, 2 1 3 1, A heating cycle that returns to the compressor 1 through the four-way valve 2 is formed.
- This heat pump type refrigeration cycle is filled with a sufficient amount of refrigerant so that there is no problem even if all the indoor units B1, B2 and B3 are operated at the same time. .
- An outdoor fan 4 is provided near the outdoor heat exchanger 3.
- An indoor fan 14, 14 is provided near the indoor heat exchangers 13, 23, 33.
- a refrigerant temperature sensor 5 for detecting the temperature of the refrigerant T d discharged from the compressor 1 is attached to the high pressure side pipe between the discharge port of the compressor 1 and the four-way valve 2.
- a temperature sensor 6 is mounted on the liquid side piping between the outdoor heat exchanger 3 and the flow control valves 11, 21, 31 at a position where it contacts the outdoor heat exchanger 3. '
- a refrigerant temperature sensor 10 for detecting the temperature T s of the refrigerant sucked into the compressor 1 is attached to the low-pressure side pipe between the four-way valve 2 and the suction port of the compressor 1.
- the indoor unit B 1 includes an indoor temperature sensor 40 that detects the temperature of indoor air sucked by the indoor fan 14, and an indoor unit B 1. It has a heat exchanger temperature sensor 41 for detecting the temperature T c of the heat exchanger 13.
- the indoor unit B 2 is composed of an indoor temperature sensor 50 for detecting the temperature of the indoor air sucked by the indoor fan 24 and a heat exchanger temperature sensor for detecting the temperature T c of the indoor heat exchanger 23. It has 5 1.
- the indoor unit B 3 includes an indoor temperature sensor 60 for detecting the temperature of the indoor air sucked by the indoor fan 34 and a heat exchanger temperature sensor 6 for detecting the temperature T c of the indoor heat exchanger 33. Have one.
- the control circuit is shown in FIG, 2.
- the outdoor control unit 70 of the outdoor unit A is connected to the commercial AC power supply 71.
- the outdoor control unit 70 includes the above-mentioned flow regulating valves 11, 21, 31, a four-way valve 2, an outdoor fan motor 4 M, temperature sensors 5, 6, 7, 8, 9, 10, and a.
- the inverter circuit 72 is connected.
- the inverter circuit 72 rectifies the voltage of the power supply 71, converts the rectified DC voltage into a voltage of a frequency (and level) corresponding to a command from the outdoor control unit 70, and outputs the voltage. This output is the driving power of the compressor motor 1M.
- Each of the indoor units B 1, B 2, and B 3 includes an indoor control unit 80 and operates.
- An indoor temperature sensor 40, a heat exchanger temperature sensor 41, an indoor fan motor 14M, and a light receiving unit 81 are connected to the indoor control unit 80 of the indoor unit B1. .
- the light receiving section 81 receives infrared light emitted from the remote control type operation device 82. Light.
- the indoor control unit 80 of the indoor unit B2 has an indoor temperature sensor.
- the light receiving section 81 receives infrared light emitted from a remote control type operation device 82.
- the room temperature control unit 80 of the room unit B 3 includes an indoor temperature sensor.
- the light receiving section 81 receives infrared light emitted from a remote control type operation device 82.
- the indoor control unit 80 and the outdoor control unit 70 are connected by a power supply line ACL and a data transmission serial signal line SL, respectively.
- Each of the indoor control units 80 has the following main functions [1] to
- the means is provided.
- Load detection means that detects the difference between the detected temperature Ta of the room temperature sensors 40, 50, 60 and the set room temperature set by the actuator 82 as an air conditioning load.
- Detected temperature T of heat exchanger temperature sensor 4 1, 5 1, 6 1 Means to inform outdoor unit A of c.
- the outdoor control unit 70 has the following means [11] to [18] as main functions.
- the indoor unit during operation is controlled so that the superheat detected by the first superheat detection means maintains a predetermined constant value.
- the difference between the detected temperature T s of the refrigerant temperature sensor 10 and the detected temperature Te of the refrigerant temperature sensor 6 is determined by the overheat of the refrigerant in the outdoor heat exchanger 3. Second degree of superheat detection means to detect temperature. '
- the interior room heat during operation is controlled so that the degree of superheat detected by the second superheat degree detection means maintains a predetermined constant value.
- means for maintaining the flow control valve corresponding to the stopped indoor unit at a predetermined opening (third control section) ).
- the reference value for the set opening is 100 (pis), but it is corrected in the range of 50 (pis) to 150 (pis) according to other operating conditions.
- FIG.3, FIG.4, FIG.5 flowcharts and FIG.6 control conditions will be described with reference to FIG.3, FIG.4, FIG.5 flowcharts and FIG.6 control conditions.
- the indoor heat exchangers 13, 23, and 33 function as condensers, and the outdoor heat exchanger 3 functions as an evaporator. As a result, the heating operation is performed in the indoor units B1, B2, and B3.
- the rotation speed Fd of the compressor 1 ( rpm) is compared with a set value, for example, 30.5 (rpm) (step 102).
- the discharge refrigerant temperature Td is lower than Tds. If it is in the normal operation area (step 103, YES), normal operation is performed (step 104). In other words, superheat control is performed to change the opening Q of the flow control valve 11 within the range of 42 (pis) to 500 (pis).
- the allowable minimum opening of the opening control for the flow rate regulating valve 11 Q min is limited to 120 (pis), which is higher than the normal operation value of 42 (pis) (step 105).
- the value 55 ° C which is 10 ° C lower than the set value Tds, is compared with the discharge refrigerant temperature Td (step 106).
- the discharge coolant temperature Td falls below 55 ° C (YES in step 106)
- the allowable minimum opening Qmin is returned to the normal value of 42 (pis), and normal operation is performed. (Step 104).
- the indoor temperature sensor 40 in the operating indoor unit B1 detects the temperature.
- the discharge refrigerant temperature T d is compared with the set value T ds.
- Step 108 If the discharge refrigerant temperature Td is in the normal operation range below the set value Tds (YES in step 108) Normal operation is performed (step 104).
- the allowable minimum opening Q min of the opening control for the flow control valve is usually It is limited to a value of 110 pis higher than the operating value of 42 pis (step 1 12).
- step 113 the allowable minimum opening Qmin is returned to the normal value of 42 (pis), and normal operation is started. It is implemented (step 104).
- step 201 In the heating operation of two indoor units (NO in step 101, YES in step 201), the processing of steps 213 to 213 is executed from the step 202 power. .
- Basic processing is the same as when one unit is operating However, the point that 85 ° C is selected as the set value T ds for the discharge refrigerant temperature T d, and the limit values of the allowable minimum opening Q min are 60 (pis) and 110 (pis ), 100 (pis) is different from the one-unit operation.
- step 313 from step 302 is executed. Is done.
- the basic processing is the same as for one unit, but when rotating, the point is that 90 ° C is selected as the set value T ds for the discharged refrigerant temperature T d.
- the point that 60 (pis), 100 (pis), and 80 (pis) are selected is different from the one-unit operation.
- Fig. 7 summarizes the variable settings of the number of operating indoor units, the rotational speed Fd of the compressor 1, the set value Tds according to the indoor temperature Ta and the allowable minimum opening Qmin.
- Data table This data table is stored in the internal memory of the outdoor control unit 70, and the set value Tds and the allowable minimum opening Qmin are selected by referring to the data table.
- the condensing temperature Tc may temporarily drop to the undercooling region, but the limit on the minimum allowable opening functions properly and effectively, and eventually the condensing temperature Tc falls out of the undercooling region. To eliminate the drop in the blown air temperature. Can be done.
- the present invention can be used as long as it controls the flow rate of the refrigerant to a plurality of heat exchangers.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01272822A EP1347248B1 (en) | 2000-12-26 | 2001-12-19 | Air conditioner and control method for the air conditioner |
AU2002216369A AU2002216369B2 (en) | 2000-12-26 | 2001-12-19 | Air conditioner and control method for the air conditioner |
ES01272822T ES2304369T3 (es) | 2000-12-26 | 2001-12-19 | Climatizador y metodo para controlarlo. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-396049 | 2000-12-26 | ||
JP2000396049A JP4302874B2 (ja) | 2000-12-26 | 2000-12-26 | 空気調和機 |
Publications (1)
Publication Number | Publication Date |
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WO2002053979A1 true WO2002053979A1 (fr) | 2002-07-11 |
Family
ID=18861410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/011144 WO2002053979A1 (fr) | 2000-12-26 | 2001-12-19 | Climatiseur et procede de commande de climatiseur |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1347248B1 (ja) |
JP (1) | JP4302874B2 (ja) |
AU (1) | AU2002216369B2 (ja) |
ES (1) | ES2304369T3 (ja) |
WO (1) | WO2002053979A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1726893A3 (en) * | 2003-03-24 | 2007-03-21 | Sanyo Electric Co., Ltd. | Refrigerant cycle apparatus |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100579564B1 (ko) * | 2004-04-12 | 2006-05-15 | 엘지전자 주식회사 | 냉동 사이클 장치의 전자 팽창밸브 제어 방법 |
JP4459776B2 (ja) * | 2004-10-18 | 2010-04-28 | 三菱電機株式会社 | ヒートポンプ装置及びヒートポンプ装置の室外機 |
KR100640858B1 (ko) * | 2004-12-14 | 2006-11-02 | 엘지전자 주식회사 | 공기조화기 및 그 제어방법 |
KR100640857B1 (ko) * | 2004-12-14 | 2006-11-02 | 엘지전자 주식회사 | 멀티 공기조화기의 제어방법 |
JP4067009B2 (ja) * | 2005-05-30 | 2008-03-26 | ダイキン工業株式会社 | 調湿装置 |
CN102032648B (zh) * | 2010-12-07 | 2012-12-05 | 海信(山东)空调有限公司 | 多联空调系统制热时冷媒流量的控制方法 |
JP5573881B2 (ja) * | 2012-04-16 | 2014-08-20 | ダイキン工業株式会社 | 空気調和機 |
CN107975920B (zh) * | 2017-11-27 | 2020-01-24 | 宁波奥克斯电气股份有限公司 | 膨胀阀控制方法及多联机系统 |
CN110410967B (zh) * | 2019-07-03 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | 多联机空调系统管路噪音的控制方法和多联机空调系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07324836A (ja) * | 1994-05-31 | 1995-12-12 | Toshiba Corp | 多室空気調和機 |
JPH08327122A (ja) * | 1995-06-05 | 1996-12-13 | Toshiba Corp | 空気調和機 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2909187B2 (ja) * | 1990-10-26 | 1999-06-23 | 株式会社東芝 | 空気調和機 |
JP3290306B2 (ja) * | 1994-07-14 | 2002-06-10 | 東芝キヤリア株式会社 | 空気調和機 |
-
2000
- 2000-12-26 JP JP2000396049A patent/JP4302874B2/ja not_active Expired - Lifetime
-
2001
- 2001-12-19 EP EP01272822A patent/EP1347248B1/en not_active Expired - Lifetime
- 2001-12-19 AU AU2002216369A patent/AU2002216369B2/en not_active Ceased
- 2001-12-19 ES ES01272822T patent/ES2304369T3/es not_active Expired - Lifetime
- 2001-12-19 WO PCT/JP2001/011144 patent/WO2002053979A1/ja active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07324836A (ja) * | 1994-05-31 | 1995-12-12 | Toshiba Corp | 多室空気調和機 |
JPH08327122A (ja) * | 1995-06-05 | 1996-12-13 | Toshiba Corp | 空気調和機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1347248A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1726893A3 (en) * | 2003-03-24 | 2007-03-21 | Sanyo Electric Co., Ltd. | Refrigerant cycle apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP1347248A4 (en) | 2007-03-07 |
JP2002195629A (ja) | 2002-07-10 |
EP1347248B1 (en) | 2008-04-23 |
ES2304369T3 (es) | 2008-10-16 |
AU2002216369B2 (en) | 2004-08-26 |
EP1347248A1 (en) | 2003-09-24 |
JP4302874B2 (ja) | 2009-07-29 |
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