WO2014013528A1 - 空気調和装置 - Google Patents
空気調和装置 Download PDFInfo
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- WO2014013528A1 WO2014013528A1 PCT/JP2012/004624 JP2012004624W WO2014013528A1 WO 2014013528 A1 WO2014013528 A1 WO 2014013528A1 JP 2012004624 W JP2012004624 W JP 2012004624W WO 2014013528 A1 WO2014013528 A1 WO 2014013528A1
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- temperature
- target set
- air
- set temperature
- refrigerant
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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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
- 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
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- 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
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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
- 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
- F25B49/022—Compressor control arrangements
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F2140/00—Control inputs relating to system states
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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
- 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
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0311—Pressure sensors near the expansion valve
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0312—Pressure sensors near the indoor heat exchanger
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0313—Pressure sensors near the outdoor heat exchanger
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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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
- 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
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- This invention relates to an air conditioner.
- an air conditioner that performs heating / cooling and dehumidification (hereinafter collectively referred to as “air conditioning”) in an indoor space (a space to be air-conditioned) has a refrigerant pipe and electric wiring between the indoor unit and the outdoor unit. Connected configuration.
- Such an air conditioner forms a refrigerant circulation circuit with a compressor, an outdoor heat exchanger, a throttle mechanism, an indoor heat exchanger, and a four-way valve as main components. Then, using a heat pump (refrigeration cycle), a desired air conditioning is performed by switching the circulation direction of the refrigerant sent from the compressor by operating the four-way valve.
- a multi-type air conditioner configured by connecting a plurality of indoor unit units to a set of outdoor unit.
- each indoor unit can perform the cooling / heating automatic operation individually, and some that are not.
- each indoor unit can be operated by individually selecting either cooling or heating.
- the latter air conditioner needs to select either cooling or heating for all indoor unit units, and to operate in the operation mode selected as the entire air conditioner. For this reason, the problem of how to determine an operation mode as an air conditioning apparatus arises.
- the automatic operation mode in which one of cooling and heating is automatically determined and the operation is performed, different determinations may be made based on the state of each indoor unit.
- an air conditioner that operates a plurality of indoor unit units in one of the heating and cooling operation modes, at least some of the plurality of indoor unit units.
- one set temperature is set, and the room temperature is controlled so as to approach one set temperature, so that both comfort and energy saving are achieved.
- an air conditioner that operates all of a plurality of indoor unit units by either heating or cooling as described above, conventionally, in each indoor unit, the set temperature and the indoor suction temperature (before air conditioning by the indoor unit) Based on the comparison with the air temperature), the indoor unit that requires cooling and the indoor unit that requires heating are counted. When there are more indoor unit units that require heating operation than indoor unit units that require cooling, all of the plurality of indoor unit units are operated with heating. When there are more indoor unit units that require cooling operation than indoor unit units that require heating operation, all of the plurality of indoor unit units are operated by cooling.
- the actuator control value is not set according to the target set temperature set in advance and the target set temperature changed by the user, and the operation is performed uniformly at a predetermined control value.
- an object of the present invention is to provide an air conditioner that can provide a stable operation state in a short time according to a target set temperature. .
- An air conditioner includes a compressor that compresses and discharges a refrigerant, an outdoor heat exchanger that performs heat exchange between the outside air and the refrigerant, a switching valve that switches a flow path of the refrigerant, and a flow rate of the liquid refrigerant.
- An outdoor unit having an outdoor flow rate adjustment valve to adjust, an indoor heat exchanger that performs heat exchange between air to be air-conditioned and a refrigerant, and an indoor unit that has an indoor flow rate adjustment valve that depressurizes the refrigerant, and at least the outdoor unit and
- a refrigerant circuit is configured by connecting a pipe to one indoor unit, and the refrigerant is based on a relationship between a first target set temperature used for temperature control of air to be air-conditioned and a preset second target set temperature.
- a control device for controlling circuit components is provided.
- the second target set temperature is further set for device protection, and the control of the device is performed based on the relationship between the first target set temperature and the second target set temperature.
- the device equipment
- stable operation can be performed in a short time.
- FIG. FIG. 1 is a diagram showing a configuration of an air-conditioning apparatus according to Embodiment 1 of the present invention.
- the air conditioner of the present embodiment sets a first target set temperature and a second target set temperature, and ensures a stable operating state based on the target set temperature without impairing quality. .
- the air conditioner of the present embodiment includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an outdoor flow rate adjustment valve 4, an outdoor blower 5, a liquid side opening / closing valve 6, and a gas side opening / closing.
- the outdoor unit 300 having the valve 7, the accumulator 8, and the control device 9 as components, the indoor heat exchanger 100 (100a, 100b), and the indoor unit 400 (400a, 101b) having the indoor flow rate adjusting valve 101 (101a, 101b) as components. 400b) and a liquid side refrigerant pipe 200 and a gas side refrigerant pipe 201 connecting the outdoor unit 300 and the indoor unit 400.
- a cooling operation, a heating operation, and a defrosting operation can be performed by circulating the refrigerant through the refrigerant circuit through the connected refrigerant pipe.
- the operating capacity of the compressor 1 can be variably controlled according to the load, and the refrigerant circulation amount flowing into each indoor unit 400 (400a, 400b) is adjusted by the indoor flow rate adjustment valve 101 (101a, 101b). Can do.
- the indoor flow rate adjustment valve 101 101a, 101b.
- the outdoor flow rate adjustment valve 4 is provided between the outdoor heat exchanger 3 and the liquid-side on-off valve 6, and appropriately controls the amount of refrigerant flowing into the outdoor unit 300 during heating operation, or stores an excess refrigerant amount in the accumulator 8.
- the flow rate is adjusted so as to be stored in the liquid side refrigerant pipe 200 so as not to exceed the maximum allowable amount.
- the control device 9 is based on two first target set temperatures (hereinafter simply referred to as target set temperatures) T1 and T2 set by the instruction input unit 500 such as a remote controller, for example, in the air-conditioning target space (indoor).
- the refrigerant circuit is controlled so that the temperature of the air (room temperature) becomes a temperature within the range of the target set temperatures T1 and T2.
- the control device 9 has time measuring means such as a timer and can measure the operation time and the like.
- the outdoor unit 300 includes a first pressure sensor for controlling driving of each actuator (for example, the compressor 1, the four-way valve 2, the outdoor flow rate adjustment valve 4, the outdoor blower 5 and the like) mounted on the outdoor unit.
- a second pressure sensor 11 for example, a first temperature sensor 12, a second temperature sensor 13, a third temperature sensor 14, a fourth temperature sensor 15, a fifth temperature sensor 16, and a sixth temperature sensor 17 are provided.
- the first pressure sensor 10 is provided between the compressor 1 and the four-way valve 2 and detects the pressure of the refrigerant discharged from the compressor 1 (high pressure).
- the second pressure sensor 11 is provided on the upstream side of the accumulator 8 and detects the pressure (low pressure) of the refrigerant sucked into the compressor 1.
- the first temperature sensor 12 is provided between the compressor 1 and the four-way valve 2 and detects the temperature (discharge temperature) of the refrigerant discharged from the compressor 1.
- the second temperature sensor 13 is provided between the accumulator 8 and the compressor 1 and detects the temperature (intake temperature) of the refrigerant sucked into the compressor 1.
- the third temperature sensor 14 is provided between the outdoor heat exchanger 3 and the outdoor flow rate adjustment valve 4 and detects the temperature of the refrigerant passing between the outdoor heat exchanger 3 and the outdoor flow rate adjustment valve 4. .
- the fourth temperature sensor 15 is provided between the outdoor heat exchanger 3 and the accumulator 8 and detects the temperature of the refrigerant passing between the outdoor heat exchanger 3 and the accumulator 8.
- the fifth temperature sensor 16 detects the temperature around the outdoor unit.
- FIG. 2 is a diagram showing a relationship of temperatures set in the air conditioner of the present embodiment.
- target set temperatures T ⁇ b> 1 and T ⁇ b> 2 are temperatures that can be arbitrarily set by the user using the instruction input unit 500.
- the air-conditioning apparatus of the present embodiment operates by switching from the heating operation to the cooling operation. Further, when the room temperature becomes lower than the target set temperature T2, the cooling operation is switched to the heating operation.
- the two target set temperatures and switching the operation mode it is possible to prevent the occurrence of hunting before and after switching between the cooling operation and the heating operation, and perform stable air conditioning.
- the target set temperatures T1 and T2 can be freely changed from the temperature set by the user according to the environment of the air-conditioning target space or the like within the limit determined by the control device 9 during operation.
- the set upper limit temperature T0c is an upper limit temperature at which the target set temperatures T1, T2, etc. can be set, for example, in relation to air conditioning capability.
- the set lower limit temperature T0h is a temperature that is a lower limit at which the target set temperatures T1, T2, and the like can be set.
- the second target set temperatures T1c and T2h are temperatures set for protecting the air conditioner devices such as the compressor 1 and electric parts (to ensure the expected product life).
- the second target set temperature T1c is set to a higher temperature (set upper limit temperature side) corresponding to the set upper limit temperature T0c.
- the second target set temperature T1h is set to a lower temperature (set lower limit temperature side) corresponding to the set lower limit temperature T0h.
- These second target set temperatures T1c and T1h change (switch) the temperature related to the setting by, for example, a switch provided in the control device 9 or a control software incorporated in the control device 9 before operation. be able to.
- FIG. 3 is a flowchart showing the control processing of the control device 9 in the air-conditioning apparatus according to Embodiment 1 of the present invention. Based on FIG. 3, the flow of the control processing of the control device 9, which is a feature of the first embodiment, will be described in detail.
- the operation command is transmitted to the control device 9, the operation of the air conditioner is started (step Sa1).
- the target set temperatures T1 and T2 are set by the user. It is determined whether the target set temperature T1 is equal to or lower than the set upper limit temperature T0c and the target set temperature T2 is equal to or higher than the set lower limit temperature T0h with respect to the set target set temperatures T1 and T2 (step Sa2).
- the operation is stopped.
- the fact that it cannot be set may be displayed on a display means (not shown) or the like so that the target set temperatures T1 and T2 cannot be set until the condition is satisfied.
- the target set temperature T1 is further equal to or lower than the second target set temperature T1c, and It is determined whether the target set temperature T2 is equal to or higher than the second target set temperature T2h (step Sa3).
- normal control is performed (step Sa20).
- the target set temperatures T1 and T2 are set near the set upper limit temperature T0c and the set lower limit temperature T0h, so it takes time to shift from the normal operation to the stable operation state. May be required. Therefore, by setting optimal actuator control values according to the target set temperatures T1 and T2, the room temperature can be stabilized in a short time.
- step Sa3 If it is determined in step Sa3 that the target set temperature T1 is not equal to or lower than the second target set temperature T1c, or the target set temperature T2 is not equal to or higher than the second target set temperature T2h, it is determined whether or not target set temperature T2 ⁇ second target set temperature T2h. Determine (step Sa4). If it is determined that the target set temperature T2 ⁇ the second target set temperature T2h, it is determined whether or not the state of the target set temperature T2 ⁇ the second target set temperature T2h continues for the time t2 (step Sa5). For example, when the target set temperature T ⁇ b> 2 is low (the room temperature is low), the low pressure pressure detected by the second pressure sensor 11 decreases as the high pressure pressure detected by the first pressure sensor 10 decreases.
- the amount of necessary refrigerant circulating in the refrigerant circuit decreases, and the amount of surplus refrigerant increases.
- the accumulator 8 cannot secure a capacity capable of storing surplus refrigerant, the liquid refrigerant may overflow from the accumulator 8 and the compressor 1 may be damaged.
- the opening degree PL1 (T2) of the outdoor flow rate adjustment valve is changed in the direction of closing the outdoor flow rate adjustment valve 4 ( Step Sa6).
- the opening degree PL1 (T2) of the outdoor flow rate adjustment valve is changed in the direction in which the outdoor flow rate adjustment valve 4 is opened.
- the opening degree PL1 (T2) of the outdoor flow rate adjustment valve 4 is set to the outdoor flow rate adjustment valve opening degree PL1 (T2, TH0) based on the ambient temperature TH0 of the outdoor unit 300 related to the detection of the fifth temperature sensor 16. To do. For example, when the temperature TH0 is low, the low pressure pressure detected by the second pressure sensor 11 decreases, the required refrigerant amount in the refrigerant circuit decreases, and the surplus refrigerant amount increases. By setting PL1 (T2, TH0) in the closing direction, the amount of liquid returned to the accumulator 8 is reduced when the compressor 1 is started, and an increase in excess refrigerant can be suppressed.
- the same effect can be obtained by changing the opening frequency of the outdoor flow rate adjusting valve 4 instead of or changing the driving frequency of the compressor 1.
- the liquid return amount when the compressor 1 is started increases. Therefore, when the target set temperature T2 is low, the refrigerant circulation amount can be suppressed and the liquid return amount can be reduced by lowering the drive frequency of the compressor 1.
- the discharge heating degree (hereinafter referred to as TdSH) is calculated on the basis of the high pressure related to detection by the first pressure sensor 10 and the temperature related to detection by the first temperature sensor 12. Then, it is determined whether or not the time t2 in the state where the discharge heating degree TdSH is equal to or larger than a certain reference value TdSHh is continued (step Sa7). If it is determined that the state in which the discharge heating degree TdSH is equal to or greater than the reference value TdSHh is continued for time t2, it is determined that the surplus refrigerant amount in the accumulator 8 is appropriate, and the process returns to step Sa2 to continue the process.
- step Sa7 if it is determined in step Sa7 that the discharge heating degree TdSH is equal to or greater than the reference value TdSHh and the time t2 cannot be continued, the excess refrigerant amount is not appropriate (excessive amount stored in the accumulator 8), and the outdoor flow rate.
- the air conditioning environment is changed because it is difficult to perform appropriate control using only the regulating valve 4.
- the target set temperature T2 is added by 1 ° C. (step Sa8). By setting the target set temperature T2 high, it is possible to expect the effect that the low pressure increases as the high pressure increases. For this reason, the amount of necessary refrigerant circulating through the refrigerant circuit is increased, and surplus refrigerant in the accumulator 8 can be reduced.
- step Sa8 After adding the target set temperature T2 by 1 ° C. in step Sa8, it is determined again whether or not the state in which the discharge heating degree TdSH is equal to or higher than a certain reference value TdSHh continues for the time t2 (step Sa9), and the surplus in the accumulator 8 Determine whether the amount of refrigerant is appropriate. If it is determined that the state in which the discharge heating degree TdSH is equal to or greater than a certain reference value TdSHh does not continue for the time t2, the process returns to step Sa8, and the target set temperature T2 is further added by 1 ° C. This is repeated until the state in which the discharge heating degree TdSH is equal to or greater than a certain reference value TdSHh continues for time t2.
- step Sa9 the target set temperature T2 is returned to a preset temperature (step Sa10), and the operation proceeds to step Sa2.
- step Sa4 determines whether or not the state of target set temperature T1> second target set temperature T1c continues for time t1 (step Sa12). For example, when the target set temperature T1 is high (the room temperature is rising), the low pressure related to detection by the second pressure sensor 11 increases and the high pressure related to detection by the first pressure sensor 10 also increases.
- the amount of circulating refrigerant is reduced by reducing the compressor frequency in order to maintain the target value (upper limit value), and heat exchange.
- the processing capacity will decrease.
- the load applied to the electrical components or the like may increase, leading to a decrease in product life.
- control is performed to increase the air volume by the outdoor blower 5 to an air volume corresponding to the target set temperature T1 (step Sa13). Then, it is determined whether the heat exchange capacity in the outdoor unit 300 has changed and the high pressure is properly controlled.
- the same effect can be obtained by changing the driving frequency of the compressor 1 within a range that does not affect the heat exchange processing capacity. For example, when the target set temperature T1 increases, the high pressure increases. Therefore, when the target set temperature T1 rises, the drive frequency of the compressor 1 is lowered to suppress the increase of the high pressure, and the load on the electrical components can be reduced.
- step Sa14 it is determined whether or not the state in which the high pressure Pd related to detection by the first pressure sensor 10 is equal to or lower than, for example, a certain high pressure Pdc is continued for a time t1 (step Sa14). If it is determined that the state in which the high pressure Pd is equal to or lower than the reference high pressure Pdc continues for the time t1, it is determined that the load for assuring the product life of the electrical component can be suppressed, and the process returns to Step Sa2. Continue.
- step Sa14 if it is higher than the reference high pressure Pdc in step Sa14, the air conditioning environment is changed because it is difficult to control only the air volume Q1 (T1) of the outdoor fan 5.
- the target set temperature T1 is further lowered by 1 ° C., for example (step Sa15).
- Step Sa15 After the target set temperature T1 is lowered by 1 ° C. in step Sa15, it is determined again whether or not the state in which the high pressure Pd is equal to or lower than the high pressure Pdc has continued for a time t1, and whether the product life of the electrical component can be guaranteed. (Step Sa16). If it is determined that the state where the high pressure Pd is equal to or lower than the high pressure Pdc does not continue for the time t1, the process returns to step Sa15, and the target set temperature T1 is further lowered by 1 ° C. This is repeated until the state where the high pressure Pd is equal to or lower than the high pressure Pdc continues for a time t1.
- step Sa16 If it is determined in step Sa16 that the high pressure Pd is equal to or lower than the reference high pressure Pdc, the target set temperature T1 is returned to a preset temperature (step Sa17), and the operation proceeds to step Sa2.
- stable air conditioning can be performed even in the operation when the target set temperatures T1 and T2 are set near the set upper limit temperature T0c and the set lower limit temperature T0h. .
- the set second target set temperature can be switched by changing the switch provided in the control device 9 or the control software incorporated in the control device. It can be set accordingly. For example, when the piping system is a long system, the amount of refrigerant to be sealed is large and the amount of surplus refrigerant generated is also large. Therefore, the amount of surplus refrigerant in the accumulator 8 is suppressed by increasing the second target set temperature T2h. Is possible. In addition, when the outdoor suction temperature is always high and the high load operation is continued, the load applied to the electrical components becomes excessive. Therefore, the high pressure related to detection by the first pressure sensor 10 is reduced by lowering the second target set temperature T1c. As the pressure decreases, the load applied to the electrical components can be reduced.
- Embodiment 2 For example, when the target set temperature T3 set at the time of heating operation is low, the indoor unit 400 may frequently repeat thermo ON and OFF. At this time, since the thermo-OFF is performed before the surplus refrigerant in the accumulator 8 evaporates, the amount of backflow liquid flowing into the compressor 1 increases, and the compressor 1 may be damaged. Therefore, in the air conditioner of the present embodiment, control is performed so as to reduce the number of times the thermo is turned on and off.
- the structure of the air conditioning apparatus in Embodiment 2 is the same as that of the air conditioning apparatus in Embodiment 1 mentioned above.
- FIG. 4 is a diagram showing a flowchart relating to processing of the control device 9 according to Embodiment 2 of the present invention. Based on FIG. 4, the flow of control processing that is a characteristic matter of the second embodiment will be described in detail.
- the operation of the air conditioner is started (step Sb1).
- the target set temperature T3 is set by the user.
- step Sb2 it is determined whether or not the target set temperature T3 has been reached by performing the cooling operation for cooling the room. If it is determined that the target set temperature T3 has been reached, the indoor unit 400 is stopped (thermo OFF) (step Sb3). Then, the measurement of the time to3 during which the thermo OFF is performed and the determination of the target set temperature T3 are performed (step Sb4).
- the target set temperature T3 when the target set temperature T3 is set near the set lower limit temperature T0h, it may be close to the boundary of the operation range of the unit, so it may take time to move from the normal operation to the stable operation state. Therefore, by setting the optimal actuator control value according to the target set temperature T3 and the thermo OFF time to3, the room temperature can be brought into a stable state in a short time.
- step Sb5 it is determined whether or not the target set temperature T3 ⁇ the second target set temperature T3h (step Sb5). If it is determined that the target set temperature T3 ⁇ the second target set temperature T3h is not satisfied, the room temperature reaches the target set temperature T3 and the thermo-ON is performed (step Sb8), and the normal control is performed. Then, the opening degree PL0 of the predetermined outdoor flow rate adjustment valve 4 is set (step Sb9).
- step Sb6 if it is determined that the target set temperature T3 ⁇ the second target set temperature T3h, after the thermo-ON (step Sb6), based on the target set temperature T3 and the thermo OFF time to3, for example, the opening degree of the outdoor flow rate adjustment valve 4 PL3 (T3, to3) is set (step Sb7). If the target set temperature T3 ⁇ the second target set temperature T3h, the target set temperature T3 is a temperature close to the set lower limit temperature T0h, so that the excess refrigerant in the accumulator 8 was stored without being evaporated as described above. It may have increased further.
- the liquid refrigerant may flow excessively into the accumulator 8 at the opening degree PL0 of the outdoor flow rate adjustment valve 4 similar to the normal control. For this reason, it is necessary to adjust the inflow of the liquid refrigerant to suppress the amount of surplus refrigerant that can be allowed by the accumulator 8. Therefore, since the surplus refrigerant in the accumulator 8 increases as the target set temperature T3 is lower, the return to the accumulator 8 is corrected by changing the opening degree PL3 of the outdoor flow rate adjustment valve 4 in the closing direction. Suppress the increase.
- the thermo OFF time to3 becomes long, the liquid refrigerant may increase in the accumulator 8 during the thermo OFF, particularly under a condition where the outside air temperature is low. Therefore, the outside temperature related to detection by the fifth temperature sensor 16 can also be taken into account as a control parameter. For example, the opening degree of the outdoor flow rate adjustment valve 4 is changed in the closing direction as the outside air temperature is lower, and when the thermostat is turned on, the liquid return to the accumulator 8 is corrected to suppress an increase in excess refrigerant.
- the discharge heating degree TdSH is calculated based on the high pressure related to the detection by the first pressure sensor 10 and the temperature related to the detection by the first temperature sensor 12. Then, when it is determined that the state in which the discharge heating degree TdSH is equal to or greater than a certain reference value TdSHh continues for time t3, it is determined that the excess refrigerant amount in the accumulator 8 is appropriate, and the process returns to step Sb3 to continue the process (step Sb10). ).
- step Sb10 if it is determined in step Sb10 that the surplus refrigerant amount is not appropriate (excessive amount stored in the accumulator 8), the air conditioning environment is changed because it is difficult to control only with the outdoor flow rate adjustment valve 4.
- the target set temperature T3 is added by 1 ° C. (step Sb11).
- step Sb11 after adding the target set temperature T3 by 1 ° C., it is determined again whether or not the state in which the discharge heating degree TdSH is equal to or higher than a certain reference value TdSHh continues for a time t3, and the surplus refrigerant amount in the accumulator 8 is It is determined whether or not it is appropriate (step Sb12). If it is determined that the state in which the discharge heating degree TdSH is equal to or greater than a certain reference value TdSHh does not continue for the time t3, the process returns to step Sb11, and the target set temperature T3 is further added by 1 ° C. This is repeated until the state in which the discharge heating degree TdSH is equal to or greater than a certain reference value TdSHh continues for time t3.
- step Sb10 When it is determined in step Sb10 that the surplus refrigerant amount in the accumulator 8 is appropriate, the target set temperature T3 is returned to the temperature set by the user in advance (step Sb13), and the operation proceeds to step Sb3 to continue the operation. .
- Step Sb6 to Sb7 it is necessary to change the opening degree of the outdoor flow rate adjustment valve 4 to a control value corresponding to the target set temperature T3 and the thermo OFF time to3 after performing the determination of Step Sb10. You may make it judge whether there exists.
- the control device 9 executes the process so that the thermo-ON and the thermo-OFF are frequently performed in the operation in which the target set temperature is set near the set lower limit temperature T0h. Even under such conditions, the surplus refrigerant amount in the accumulator 8 can be made appropriate and stable control can be performed in a short time.
- Embodiment 3 For example, when performing the heating operation, if the temperature set as the target set temperature T4 is low, the indoor unit 400 may frequently repeat thermo-ON and OFF in a short time. At this time, for example, in the outdoor heat exchanger 3, if the indoor unit 400 stops before performing the defrosting operation for removing the attached frost, the state where the defrosting operation cannot be performed continues, and the residual frost state continues. There is a concern that the heating capacity will be significantly reduced. Therefore, in the air conditioner of the present embodiment, the defrosting operation can be performed.
- the structure of the air conditioner in Embodiment 3 is the same as that of the air conditioner in Embodiment 1 mentioned above.
- FIG. 5 is a diagram showing a flowchart relating to processing of the control device 9 according to Embodiment 3 of the present invention. Based on FIG. 5, the flow of the control process that is a characteristic matter of the third embodiment will be described in detail.
- the operation command is transmitted to the control device 9, the operation of the air conditioner is started (step Sc1).
- the target set temperature T4 is set by the user.
- each indoor unit 400 when the target set temperature T4 is set near the set lower limit temperature T0h, the evaporating temperature of the outdoor heat exchanger 3 decreases because the temperature is close to the boundary of the operation range of the unit. It becomes an environment where frost formation is promoted in the exchanger 3. As described above, when the indoor unit 400 frequently repeats the thermo-OFF in a short time, the defrosting operation cannot be performed and the residual frost state of the outdoor heat exchanger 3 is continued.
- control change temperature T4h is a temperature that serves as a reference for determining whether the determination process for determining whether or not to perform the defrosting operation is performed in a normal process or a process different from the normal process.
- step Sc4 If it is determined in step Sc4 that the time is within the time t4, it is necessary to continue the operation until the time t4 at which the defrosting operation is possible before determining the remaining frost state of the outdoor heat exchanger 3, For example, 5 ° C. is further added to the set temperature T3 (step Sc5). Then, the heating operation is continued until time t4 is reached (step Sc6). When the time t4 is not reached, the target set temperature T4 is changed again, and the process is repeated until the time t4 elapses.
- step Sc7 it is determined whether or not the state where the temperature TH3 related to detection by the third temperature sensor 14 mounted at the inlet of the outdoor heat exchanger 3 is equal to or lower than a certain reference temperature Tdef continues for the time tt4 (step Sc7). If it is determined that temperature TH3 ⁇ reference temperature Tdef related to detection by third temperature sensor 14 continues for time tt4, defrosting operation is performed assuming that outdoor heat exchanger 3 is frosted (step Sc8). If it is determined that the time tt4 is not continued, the heating operation is continued without performing the defrosting operation, and the thermo-OFF is performed (step Sc9).
- thermo-off condition in step Sc3 After satisfying the thermo-off condition in step Sc3, it is determined whether or not the defrosting operation is necessary, and then the thermo-off is performed.
- the target set temperature T4 When the target set temperature T4 is low, the room temperature is set to T4 in a short time and frequently. By arriving, it becomes possible to prevent frost from remaining at the time of thermo OFF, and the operation can be continued without lowering the heating capacity.
- Embodiment 4 FIG.
- the air conditioning according to the temperature difference ⁇ T TA1 ⁇ TA2 between the target set temperatures in consideration of energy saving with respect to the set target set temperatures TA1 and TA2.
- the actuator control value of the apparatus is changed. As a result, the number of switching between the cooling operation and the heating operation is reduced, and the room temperature is stably maintained.
- the temperature difference ⁇ T between the target set temperatures is large, the temperature region (time) in which the thermo is turned off increases. For this reason, the amount of power consumption is reduced and energy saving is improved.
- the temperature difference ⁇ T is small, the temperature region (time) in which the thermo is turned on increases, so that the power consumption increases and the energy saving performance decreases.
- switching between the cooling operation and the heating operation increases. As the number of activations increases, power consumption at the time of activation is generated in order to reach the target set temperature TA1 or the target set temperature TA2 from a state in which the room temperature has increased or decreased when the thermo is turned off.
- the compressor 1 is changed.
- the frequency of starting and stopping is reduced so that power consumption during startup can be reduced.
- FIG. 6 is a diagram showing an example of a time displacement at room temperature.
- the temperature difference changes as ⁇ T1, ⁇ T2, ⁇ T3,..., ⁇ Tn as shown in FIG.
- the smaller the temperature difference ⁇ T the shorter the time to reach the target set temperature, and the frequency of start / stop increases, resulting in power consumption.
- the room temperature is not stable.
- the temperature difference ⁇ T between the target set temperatures is small, the thermo OFF region is small and the overshoot (or undershoot) after reaching the target set temperature increases. For this reason, it is considered that the user feels uncomfortable when the temperature change is confirmed in time series.
- FIG. 7 is a diagram showing an example of time displacement at room temperature according to Embodiment 4 of the present invention.
- the drive frequency of the compressor is changed as follows, for example, in accordance with changes in the temperature differences ⁇ T1, ⁇ T2, ⁇ T3,.
- the magnitude of the temperature difference ⁇ T and the width (change width) for changing the drive frequency are proportional. For this reason, when the drive frequency is changed and the compressor 1 is increased or decreased, the change width of the drive frequency increases as the temperature difference ⁇ T increases.
- Temperature difference ⁇ T target set temperature TA1 (cooling) ⁇ target set temperature TA2 (heating)
- Driving speed Fp during acceleration current frequency F + frequency change width ⁇ F ( ⁇ T)
- Frequency change width ⁇ F ( ⁇ T) current frequency F ⁇ temperature difference ⁇ T / correction coefficient ⁇
- the speed of acceleration / deceleration is suppressed by changing the drive frequency.
- the arrival time to the target set temperature is slightly extended.
- the frequency of starting and stopping of the compressor 1 can be suppressed, so that relatively stable temperature control is possible.
- the number of activations can be reduced, and an increase in power consumption can be suppressed by increasing the driving frequency at a stroke at the time of activation, and energy saving can be improved.
- FIG. 8 is a diagram showing an example of a time displacement at room temperature according to Embodiment 4 of the present invention.
- at least one of the target set temperature TA1 and the target set temperature TA2 may be equal to or higher than the second target set temperature TB1 and lower than the second target set temperature TB2.
- the temperature difference ⁇ T may be reset as follows to change the speed of increase / decrease of the drive frequency of the compressor 1.
- the temperature exceeds the second target set temperatures TB1 and TB2.
- ⁇ T becomes smaller than the temperature range shown in FIG.
- the load applied to the electrical components during cooling operation can be suppressed by correcting that the indoor unit suction temperature overshoots and exceeds the second target set temperature TB1 that is the upper limit value, rather than the control shown in FIG. Can do. Further, by correcting that the indoor unit suction temperature undershoots and falls below the second target set temperature TB2, which is the lower limit value, than the control shown in FIG. 7, the liquid refrigerant becomes lower as the indoor suction temperature becomes lower during heating operation. Is corrected to the amount of surplus refrigerant that can be allowed by the accumulator 8.
- Embodiment 5 For example, when the target set temperature T5 set during the cooling operation is high, if the high pressure is maintained for a long time near the target value (upper limit value), the load on the electrical components and the like may increase, leading to a decrease in product life. There is. Therefore, in the air conditioner of the present embodiment, the high pressure is reduced by changing the actuator control value in accordance with the target set temperature T5 and the time to5 when the thermo is ON. For example, in order to reduce the high pressure, the air volume of the outdoor fan 5 is increased to the air volume corresponding to the target set temperature T5. As a result, the high pressure is reduced to the target high pressure Pdc that can be guaranteed even if the load applied to the electrical component is continuously operated over the product life.
- the structure of the air conditioning apparatus in Embodiment 5 is the same as that of the air conditioning apparatus in Embodiment 1 mentioned above.
- FIG. 9 is a diagram showing a flowchart relating to processing of the control device 9 according to Embodiment 5 of the present invention. Based on FIG. 9, the flow of control processing that is a characteristic matter of the fifth embodiment will be described in detail.
- the operation of the air conditioner is started (step Sd1).
- the target set temperature T5 is set by the user.
- the target set temperature T5 when the target set temperature T5 is set in the vicinity of the set upper limit temperature T0c, it is close to the boundary of the operation range of the unit, and therefore it may take time to move from the normal operation to the stable operation state. Therefore, by setting an optimal actuator control value according to the target set temperature T5 and the thermo ON time to5, the room temperature can be brought into a stable state in a short time.
- step Sd5 it is determined whether or not the target set temperature T5> the second target set temperature T5c and the thermo-ON time to5 is equal to or longer than a certain reference time TX5 (step Sd5). If it is determined that the target set temperature T5> the second target set temperature T5c is not satisfied or the thermo-ON time to5 ⁇ the reference time TX5 is not satisfied, it is assumed that the load applied to the electrical components can guarantee the expected product life, and the room temperature reaches the target set temperature T5. Then, after the thermo-ON (step Sd8), normal control is performed. And it sets to the air volume Q0 of the predetermined outdoor fan 5 (step Sd9).
- thermo-ON step Sd6
- the target set temperature T5 and the thermo-ON time to5 For example, the outdoor fan 5 air volume Q5 (T5, to5) is set (step Sd7).
- the target set temperature T5 is high (the room temperature is rising)
- the low pressure related to detection by the second pressure sensor 11 increases and the high pressure related to detection by the first pressure sensor 10 increases.
- the control target value of the high pressure set in advance is reached, the heat exchange processing capacity may be reduced by reducing the compressor frequency in order to maintain the target value (upper limit value). If the target value (upper limit) of pressure is maintained for a long time, there is a possibility that the load applied to the electrical parts increases and the product life is shortened. Therefore, the above-described phenomenon is corrected by changing the actuator control in accordance with the target set temperature T5 and the thermo ON time to5.
- step Sd10 it is determined whether or not the state in which the high pressure Pd related to detection by the first pressure sensor 10 is, for example, equal to or lower than a certain reference high pressure Pdc continues for time t5 (step Sd10). If it is determined that the state in which the high pressure Pd is equal to or lower than the reference high pressure Pdc continues for the time t5, it is determined that the load for assuring the product life of the electrical component can be suppressed, and the process returns to Step Sd2. Continue.
- the product life can be guaranteed by setting the reference high pressure Pdc to a pressure corresponding to the thermo ON time to5.
- step Sd9 if the high pressure Pd is higher than the reference high pressure Pdc in step Sd9, the air conditioning environment is changed because it is difficult to control only the air volume Q5 (T5, to5) of the outdoor fan 5.
- the target set temperature T5 is further lowered by 1 ° C., for example (step Sd11).
- Step Sd11 After the target set temperature T1 is lowered by 1 ° C. in step Sd11, it is determined again whether or not the state in which the high pressure Pd is equal to or lower than the high pressure Pdc has continued for a time t5, and whether the product life of the electrical component can be guaranteed. (Step Sd12). If it is determined that the state where the high pressure Pd is equal to or lower than the high pressure Pdc does not continue for the time t5, the process returns to step Sd11 and the target set temperature T5 is further lowered by 1 ° C. This is repeated until the state where the high pressure Pd is equal to or lower than the high pressure Pdc continues for a time t5.
- step Sd11 If it is determined in step Sd11 that the high pressure Pd is equal to or lower than the reference high pressure Pdc, the target set temperature T5 is returned to a preset temperature (step Sd13), and the operation proceeds to step Sd2.
- the control device 9 executes the process so that the air conditioner is operated by a high load in the operation in which the target set temperature is set near the set upper limit temperature T0c. Stable control can be performed in a short time without shortening the product life of the electrical components.
- Embodiment 6 For example, in the first embodiment and the like described above, the target set temperature T1, the second target set temperature T1c closer to the set upper limit temperature T0c, and the target set temperature T2, the second target set temperature closer to the set lower limit temperature T0h. Both the temperature T2h and the temperature T2h were determined. However, the present invention is not limited to this, and either one may be determined.
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Abstract
Description
図1は本発明の実施の形態1に係る空気調和装置の構成を示す図である。本実施の形態の空気調和装置は、第一目標設定温度、第二目標設定温度を設定し、目標設定温度に基づいて、品質を損なうことなく安定した運転状態を確保するようにしたものである。
例えば、暖房運転時に設定する目標設定温度T3が低い場合、室内機400においてサーモON、OFFを頻繁に繰り返す場合がある。このとき、アキュムレータ8内の余剰冷媒が蒸発する前にサーモOFFすることで、圧縮機1への流入液バック量が増大してしまい、圧縮機1が損傷する恐れがある。そこで、本実施の形態の空気調和装置では、サーモON、OFFの回数を減らすような制御を行うものである。ここで、実施の形態2における空気調和装置の構成は、前述した実施の形態1における空気調和装置と同様である。
例えば、暖房運転を行う際、目標設定温度T4として設定した温度が低い場合、室内機400において短時間でサーモON、OFFを頻繁に繰り返す場合がある。このとき、例えば、室外熱交換器3において、付着した霜を除くための除霜運転を実行する前に室内機400が停止すると、除霜運転が実行できない状態が続き、残霜状態が継続して暖房能力が著しく低下する懸念がある。そこで、本実施の形態の空気調和装置では、除霜運転を行えるようにしたものである。ここで、実施の形態3における空気調和装置の構成は、前述した実施の形態1における空気調和装置と同様である。
実施の形態4の空気調和装置は、設定された目標設定温度TA1及び目標設定温度TA2に対して、省エネルギー性を考慮して、目標設定温度間の温度差ΔT=TA1-TA2に応じて空気調和装置のアクチュエータ制御値を変更するようにしたものである。これにより、冷房運転と暖房運転の切り替えの回数を減らし、安定的に室温を維持する。
温度差ΔT=目標設定温度TA1(冷房)-目標設定温度TA2(暖房)
増速時駆動周波数Fp=現状周波数F+周波数変化幅ΔF(ΔT)
減速時駆動周波数Fm=現状周波数F-周波数変化幅ΔF(ΔT)
周波数変化幅ΔF(ΔT)=現状周波数F×温度差ΔT/補正係数α
ΔT=TB1-TB2
2.TA1≦TB1かつTA2<TB2の場合
ΔT=TA1-TB2
3.TA1>TB1かつTA2≧TB2の場合
ΔT=TB1-TA2
4.TA1≦TB1かつTA2≧TB2の場合
ΔT=TA1-TA2
例えば、冷房運転時に設定する目標設定温度T5が高い場合、高圧圧力が目標値(上限値)近くで長時間維持されると、電気部品等にかかる負荷が増加して製品寿命の低下につながる恐れがある。そこで、本実施の形態の空気調和装置では、目標設定温度T5及びサーモON時の時間to5に応じてアクチュエータ制御値を変更することで高圧圧力を低下させる。例えば、高圧圧力を低下させるため、室外送風機5の風量を目標設定温度T5に応じた風量に増加する。これにより電気部品にかかる負荷が製品寿命に対して連続的に運転しても保証できる目標高圧圧力Pdcまで高圧圧力を低下させるようにするものである。ここで、実施の形態5における空気調和装置の構成は、前述した実施の形態1における空気調和装置と同様である。
例えば、上述した実施の形態1等においては、設定上限温度T0cに近い方の目標設定温度T1、第二目標設定温度T1cと、設定下限温度T0hに近い方の目標設定温度T2、第二目標設定温度T2hとの両方を定めるようにした。ただ、これに限定するものではなく、いずれか一方を定めるようにしてもよい。
Claims (11)
- 冷媒を圧縮して吐出する圧縮機、外気と冷媒の熱交換を行う室外熱交換器、冷媒の流路切り替えを行うための切替弁及び冷媒の流量を調整する室外流量調整弁を有する室外機と、
空調対象の空気と冷媒との熱交換を行う室内熱交換器及び冷媒を減圧する室内流量調整弁を有する室内機とを有し、前記室外機と少なくとも1台の前記室内機との間を配管接続して冷媒回路を構成し、
前記空調対象の空気の温度制御に用いる第一目標設定温度とあらかじめ設定された第二目標設定温度との関係に基づいて前記冷媒回路の構成要素を制御する前記制御装置と備える空気調和装置。 - 前記制御装置は、前記第一目標設定温度が、設定可能な下限温度に対応して設定された前記第二目標設定温度よりも低く設定されたものと判断すると、前記空調対象の空気の温度が、前記第二目標設定温度となるように前記室外流量調整弁を制御する請求項1記載の空気調和装置。
- 前記制御装置は、前記第一目標設定温度が、設定可能な下限温度に対応して設定された前記第二目標設定温度よりも低く設定されたものと判断すると、前記空調対象の空気の温度が、前記第二目標設定温度となるように前記圧縮機の駆動周波数を制御する請求項1又は2記載の空気調和装置。
- 前記室外熱交換器に外気を送り込む室外送風機をさらに備え、
前記制御装置は、前記第一目標設定温度が、設定可能な上限温度に対応して設定された前記第二目標設定温度よりも高く設定されたものと判断すると、前記空調対象の空気の温度が、前記第二目標設定温度となるように前記室外送風機を制御する請求項1~3のいずれか一項に記載の空気調和装置。 - 前記制御装置は、前記第一目標設定温度が、設定可能な上限温度に対応して設定された前記第二目標設定温度よりも高く設定されたものと判断すると、前記空調対象の空気の温度が、前記第二目標設定温度となるように前記圧縮機の駆動周波数を制御する請求項1~4のいずれか一項に記載の空気調和装置。
- 除霜運転判断処理の変更基準となる制御変更温度がさらに設定され、
前記制御装置は、前記第一目標設定温度が制御変更温度以下であると判断すると、前記室内機のサーモON又はサーモOFFの繰り返しを減少させるように、前記第一目標設定温度をより高い温度に変更して制御する請求項1~5のいずれか一項に記載の空気調和装置。 - 前記制御装置は、設定上限温度及び設定下限温度の範囲内で設定された2つの前記第一目標設定温度の温度差に基づいて前記圧縮機の駆動周波数を制御する請求項1~6のいずれか一項に記載の空気調和装置。
- 前記制御装置は、設定上限温度及び設定下限温度の範囲内で設定された2つの前記第一目標設定温度及び2つの第二目標設定温度の関係に基づいて決定した温度差に基づいて前記圧縮機の駆動周波数を制御する請求項1~6のいずれか一項に記載の空気調和装置。
- 前記温度差が大きいほど圧縮機が増速又は減速する変化幅が大きくなるように前記圧縮機の駆動周波数を制御する請求項7又は8に記載の空気調和装置。
- [規則91に基づく訂正 24.07.2012]
前記第二目標設定温度は、前記制御装置に設けられたスイッチ又は前記制御装置に組み込まれた制御ソフトウェアの変更により、あらかじめされた設定を変更可能とする請求項1~9のいずれか一項に記載の空気調和装置。 - [規則91に基づく訂正 24.07.2012]
前記制御装置は、前記第一目標設定温度と前記第二目標設定温度との関係に基づき、前記圧縮機の発停が頻繁に繰り返される運転が継続されて前記圧縮機内の液冷媒が蒸発しないことで前記圧縮機が破損しないように前記構成要素の制御を行う請求項1~10のいずれか一項に記載の空気調和装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3165846A4 (en) * | 2014-07-03 | 2018-03-14 | Mitsubishi Electric Corporation | Refrigerating and air-conditioning apparatus |
JP2019066107A (ja) * | 2017-10-02 | 2019-04-25 | 三菱電機ビルテクノサービス株式会社 | 空調システム |
WO2020150889A1 (zh) * | 2019-01-22 | 2020-07-30 | 北京卡林新能源技术有限公司 | 一种湿空气换热器轮动除霜控制系统 |
WO2023181885A1 (ja) * | 2022-03-24 | 2023-09-28 | 株式会社富士通ゼネラル | 空気調和システム、空気調和装置及び制御方法 |
WO2024261934A1 (ja) * | 2023-06-22 | 2024-12-26 | 三菱電機株式会社 | 冷凍サイクル装置 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6201872B2 (ja) * | 2014-04-16 | 2017-09-27 | 三菱電機株式会社 | 空気調和機 |
KR20160084149A (ko) * | 2015-01-05 | 2016-07-13 | 엘지전자 주식회사 | 냉장고의 제어방법 |
JP2016161256A (ja) * | 2015-03-04 | 2016-09-05 | 株式会社富士通ゼネラル | 空気調和装置 |
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CA3010767A1 (en) * | 2016-11-17 | 2018-05-24 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Anti-slugging control method and control apparatus for air-conditioning system, and air-conditioning system |
CN106642403A (zh) * | 2017-02-23 | 2017-05-10 | 珠海格力电器股份有限公司 | 空调室外机和空调系统 |
CN107023940B (zh) * | 2017-03-30 | 2019-12-03 | 青岛海尔空调器有限总公司 | 空调器制热运行的控制方法 |
WO2021030169A1 (en) * | 2019-08-09 | 2021-02-18 | Carrier Corporation | Cooling system and method of operating a cooling system |
CN114517969A (zh) * | 2022-04-02 | 2022-05-20 | 珠海市金品创业共享平台科技有限公司 | 空调恒温的控制系统、方法、相关设备及空调器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009198128A (ja) * | 2008-02-25 | 2009-09-03 | Panasonic Corp | 空気調和機の遠隔制御装置 |
JP2010078184A (ja) * | 2008-09-24 | 2010-04-08 | Osaka Gas Co Ltd | 遠隔制御装置 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4407138A (en) * | 1981-06-30 | 1983-10-04 | Honeywell Inc. | Heat pump system defrost control system with override |
JPH0633897B2 (ja) * | 1986-04-08 | 1994-05-02 | 三菱電機株式会社 | 空気調和機 |
US5477698A (en) * | 1992-06-16 | 1995-12-26 | Matsushita Electric Industrial Co. Ltd. | Air conditioner |
JP2944600B2 (ja) * | 1998-01-09 | 1999-09-06 | 新潟日本電気株式会社 | 冷却温度制御回路 |
JP3334660B2 (ja) * | 1998-05-19 | 2002-10-15 | 三菱電機株式会社 | 冷凍サイクルの制御装置およびその制御方法 |
JP4385475B2 (ja) * | 2000-03-13 | 2009-12-16 | 三菱電機株式会社 | 空気調和機、空気調和システムおよび目標温度可変範囲の変更方法 |
JP2003028478A (ja) * | 2001-07-18 | 2003-01-29 | Daikin Ind Ltd | 冷凍装置 |
JP3912104B2 (ja) * | 2001-12-25 | 2007-05-09 | 三菱自動車工業株式会社 | エンジンの冷却装置 |
JP3832351B2 (ja) * | 2002-01-30 | 2006-10-11 | 株式会社デンソー | 車両用空調防曇制御装置 |
US20050023363A1 (en) * | 2003-05-29 | 2005-02-03 | Sharma Ratnesh K. | CRAC unit control based on re-circulation index |
US7540163B2 (en) * | 2005-02-16 | 2009-06-02 | Carrier Corporation | Prevention of flooded starts in heat pumps |
JP4587849B2 (ja) * | 2005-03-11 | 2010-11-24 | 三洋電機株式会社 | 空気調和装置及びその制御方法、温度設定装置及びその制御方法 |
JP2007139265A (ja) * | 2005-11-16 | 2007-06-07 | Mitsubishi Heavy Ind Ltd | マルチ型空気調和機の運転制御方法およびプログラム |
JP2007170686A (ja) * | 2005-12-19 | 2007-07-05 | Sanyo Electric Co Ltd | 空気調和装置 |
JP5145674B2 (ja) * | 2006-09-11 | 2013-02-20 | ダイキン工業株式会社 | 冷凍装置 |
JP2009014210A (ja) * | 2007-06-29 | 2009-01-22 | Daikin Ind Ltd | 冷凍装置 |
US7841770B2 (en) * | 2008-05-29 | 2010-11-30 | Hycon Technology Corp. | Temperature measuring system and measuring method using the same |
JP5545100B2 (ja) * | 2009-08-31 | 2014-07-09 | 三洋電機株式会社 | 冷却管理装置 |
CN102762928B (zh) * | 2010-02-17 | 2015-09-09 | 三菱电机株式会社 | 空气调和系统 |
EP2711215B1 (en) * | 2011-05-18 | 2018-07-25 | Toyota Jidosha Kabushiki Kaisha | Air-condition remote control system for vehicle |
-
2012
- 2012-07-20 WO PCT/JP2012/004624 patent/WO2014013528A1/ja active Application Filing
- 2012-07-20 JP JP2014525568A patent/JP5933003B2/ja not_active Expired - Fee Related
- 2012-07-20 US US14/399,238 patent/US10054349B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009198128A (ja) * | 2008-02-25 | 2009-09-03 | Panasonic Corp | 空気調和機の遠隔制御装置 |
JP2010078184A (ja) * | 2008-09-24 | 2010-04-08 | Osaka Gas Co Ltd | 遠隔制御装置 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3165846A4 (en) * | 2014-07-03 | 2018-03-14 | Mitsubishi Electric Corporation | Refrigerating and air-conditioning apparatus |
JP2019066107A (ja) * | 2017-10-02 | 2019-04-25 | 三菱電機ビルテクノサービス株式会社 | 空調システム |
JP7082310B2 (ja) | 2017-10-02 | 2022-06-08 | 三菱電機ビルソリューションズ株式会社 | 空調システム |
WO2020150889A1 (zh) * | 2019-01-22 | 2020-07-30 | 北京卡林新能源技术有限公司 | 一种湿空气换热器轮动除霜控制系统 |
WO2023181885A1 (ja) * | 2022-03-24 | 2023-09-28 | 株式会社富士通ゼネラル | 空気調和システム、空気調和装置及び制御方法 |
JP2023141673A (ja) * | 2022-03-24 | 2023-10-05 | 株式会社富士通ゼネラル | 空気調和システム、空気調和装置及び制御方法 |
JP7468562B2 (ja) | 2022-03-24 | 2024-04-16 | 株式会社富士通ゼネラル | 空気調和システム、空気調和装置及び制御方法 |
WO2024261934A1 (ja) * | 2023-06-22 | 2024-12-26 | 三菱電機株式会社 | 冷凍サイクル装置 |
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