WO2019012628A1 - Climatiseur et procédé de commande de climatiseur - Google Patents

Climatiseur et procédé de commande de climatiseur Download PDF

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Publication number
WO2019012628A1
WO2019012628A1 PCT/JP2017/025423 JP2017025423W WO2019012628A1 WO 2019012628 A1 WO2019012628 A1 WO 2019012628A1 JP 2017025423 W JP2017025423 W JP 2017025423W WO 2019012628 A1 WO2019012628 A1 WO 2019012628A1
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WO
WIPO (PCT)
Prior art keywords
air conditioner
control unit
preheating
defrosting
time
Prior art date
Application number
PCT/JP2017/025423
Other languages
English (en)
Japanese (ja)
Inventor
浩平 葛西
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/025423 priority Critical patent/WO2019012628A1/fr
Priority to JP2019529376A priority patent/JPWO2019012628A1/ja
Publication of WO2019012628A1 publication Critical patent/WO2019012628A1/fr

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • 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
    • F25B2600/01—Timing
    • 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
    • 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

Definitions

  • the present invention relates to an air conditioner having a defrosting function and a control method of the air conditioner.
  • the heat exchanger functioning as an evaporator may be frosted.
  • frost is formed on the heat exchanger, the flow of air in the air path of the heat exchanger is impeded, so that the heat exchange performance of the heat exchanger may be lowered, and the heating capacity and the energy consumption efficiency may be lowered.
  • the room temperature may decrease during the defrosting operation, and a comfortable room temperature for the user may not be maintained.
  • Patent Document 1 discloses an air conditioner that performs a preheating operation for forcibly performing a heating operation regardless of the room temperature and raising the room temperature before starting the defrosting operation. By adopting such a configuration, it is possible to suppress a decrease in room temperature during the defrosting operation.
  • the preheating operation is started from the time when the condition for starting the defrosting operation is satisfied. For this reason, there is a problem that the preheating operation is performed in a state where the performance of the heat exchanger has already deteriorated, and the power consumption may increase, and the effect of suppressing the room temperature decrease during the defrosting operation may be low. .
  • This invention is made in view of the above, Comprising: It aims at obtaining the air conditioner which can suppress the increase in power consumption.
  • the air conditioner according to the present invention executes a preheating operation that forcibly performs the heating operation regardless of the heating operation, the defrosting operation, and the start condition of the heating operation.
  • An air conditioner capable of predicting a defrosting start time that satisfies the conditions for starting the defrosting operation, and causing the control unit to start the preheating operation before the predicted defrosting start time comes It is characterized by having.
  • the air conditioner according to the present invention has the effect of being able to suppress an increase in power consumption.
  • the figure which shows schematic structure of the air conditioner concerning Embodiment 1 of this invention A diagram showing an example of the configuration of a processing circuit for realizing the control unit of the air conditioner shown in FIG.
  • achieving the control part of the air conditioner shown in FIG. Flow chart showing operation of the air conditioner shown in FIG.
  • the figure which shows schematic structure of the air conditioner concerning Embodiment 2 of this invention. Flow chart showing the operation of the air conditioner shown in FIG. Explanatory drawing about the calculation method of the preheat operation time of the air conditioner shown in FIG.
  • FIG. 1 is a view showing a schematic configuration of an air conditioner 1A according to Embodiment 1 of the present invention.
  • the air conditioner 1A controls the compressor 2, the first heat exchanger 3, the second heat exchanger 4, the four-way valve 5, the expansion valve 6, the blower fan 7, the fan motor 8, and And a part 9.
  • the air conditioner 1A can execute a heating operation for warming the air in the room and a cooling operation for cooling the air in the room.
  • the compressor 2 circulates the refrigerant in the refrigerant pipe.
  • the compressor 2 is incorporated in a refrigerant circulation circuit configured of refrigerant piping, compresses and discharges the refrigerant, and circulates between the first heat exchanger 3 and the second heat exchanger 4.
  • Each of the first heat exchanger 3 and the second heat exchanger 4 functions as a condenser or an evaporator.
  • the first heat exchanger 3 is a heat exchanger disposed indoors
  • the second heat exchanger 4 is a heat exchanger disposed outdoor.
  • the first heat exchanger 3 functions as an evaporator when the air conditioner 1A is performing a cooling operation, and functions as a condenser when the air conditioner 1A is performing a heating operation.
  • the second heat exchanger 4 functions as a condenser when the air conditioner 1A is performing the cooling operation, and functions as an evaporator when the air conditioner 1A is performing the heating operation.
  • the four-way valve 5 is incorporated in the refrigerant circulation circuit, and switches the direction in which the refrigerant flows in the refrigerant circulation circuit.
  • the four-way valve 5 switches the flow direction of the refrigerant in accordance with an instruction from the control unit 9.
  • the expansion valve 6 is a throttling device that is incorporated in the refrigerant circulation circuit, adjusts the flow rate of the refrigerant by setting the opening degree, and decompresses and expands the refrigerant.
  • the blower fan 7 rotates about an axis as the fan motor 8 rotates, and blows the second heat exchanger 4.
  • the fan motor 8 drives the blower fan 7 using a command voltage input from the control unit 9.
  • the command voltage is adjusted to keep the rotational speed of the blower fan 7 constant.
  • the second heat exchanger 4 is frosted, the axial torque of the blower fan 7 increases, so the command voltage increases. For this reason, the increase amount of the command voltage is a value corresponding to the frosted state.
  • Control unit 9 controls the operation of air conditioner 1A.
  • the control unit 9 can control the operation of the air conditioner 1A using the compressor 2, the four-way valve 5, the expansion valve 6, the fan motor 8, and the like.
  • the control unit 9 adjusts the value of the command voltage based on the number of rotations of the blower fan 7.
  • the control unit 9 determines a command voltage so as to achieve the set rotational speed, and inputs the command voltage to the fan motor 8.
  • the control unit 9 detects the actual number of rotations, adjusts the value of the command voltage based on the difference between the detected number of rotations and the set number of rotations, and inputs it to the fan motor 8. For example, when the detected rotational speed is smaller than the set rotational speed, the control unit 9 increases the value of the command voltage.
  • the control unit 9 can switch the operation mode of the air conditioner 1A by controlling the compressor 2, the four-way valve 5, the expansion valve 6, the fan motor 8 and the like using setting values corresponding to a plurality of operation modes. it can.
  • the air conditioner 1A can operate the compressor 2 to perform the heating operation, the cooling operation, the defrosting operation, and the preheating operation.
  • the control unit 9 detects the indoor temperature and controls the timing at which the heating operation is performed based on the difference between the detected indoor temperature and the set temperature.
  • the control unit 9 determines the start condition of the heating operation, and executes the heating operation when the start condition is satisfied, determines the stop condition of the heating operation, and stops the heating operation when the stop condition is satisfied. .
  • the control unit 9 executes the heating operation to make the room temperature approach the set temperature.
  • the control unit 9 stops the heating operation to bring the room temperature close to the set temperature.
  • the control unit 9 controls the timing at which the cooling operation is performed, based on the difference between the indoor temperature and the set temperature.
  • the defrosting operation is to warm the second heat exchanger 4 functioning as an evaporator so as to eliminate the frost generated in the second heat exchanger 4.
  • the control unit 9 starts the defrosting operation when the start condition of the defrosting operation is satisfied while the air conditioner 1A is operating in the heating mode.
  • the defrosting operation can be realized, for example, by switching the four-way valve 5 so that the refrigerant flows in a direction different from that in the heating operation.
  • the four-way valve 5 connects the path indicated by the dotted line to connect the discharge pipe of the compressor 2 and the second heat exchanger 4 so that the high temperature refrigerant can be used as the second heat exchanger 4 Can be supplied and this heat can be used to melt the frost of the second heat exchanger 4.
  • the defrosting operation and the heating operation since the path through which the refrigerant flows is changed, the defrosting operation and the heating operation can not be performed simultaneously.
  • the preheating operation is to forcibly execute the heating operation before starting the defrosting operation, regardless of the heating operation start condition.
  • the control unit 9 predicts the defrosting start time when the condition for starting the defrosting operation is satisfied, and starts the preheating operation before the predicted defrosting start time comes.
  • the set temperature in the preheating operation is higher than the set temperature in the normal heating operation to raise the room temperature in a short time.
  • the control unit 9 predicts the defrost start time based on the command voltage to the fan motor 8. More specifically, the control unit 9 predicts the defrosting start time point based on the increase amount of the command voltage.
  • the command voltage it is possible to suppress an increase in cost because it does not require additional components such as a current detection element and a voltage detection element. Further, if the amount of increase from the initial value of the command voltage is used, it is possible to suppress the influence of the initial value fluctuation of the motor torque due to the aged deterioration of the performance of the second heat exchanger 4 and frost formation.
  • FIG. 2 is a diagram showing a configuration example of a processing circuit for realizing the control unit 9 of the air conditioner 1A shown in FIG.
  • the processing circuit 100 shown in FIG. 2 is configured as a dedicated circuit.
  • the processing circuit 100 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a combination thereof.
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • FIG. 3 is a diagram showing a configuration example of a processing circuit for realizing the control unit 9 of the air conditioner 1A shown in FIG.
  • the processing circuit 101 includes a processor 102 and a memory 103. In other words, part or all of the functions of the control unit 9 can be realized using the processor 102 and the memory 103.
  • the processing circuit 101 includes the processor 102 and the memory 103
  • the processor 102 reads out and executes a computer program stored in the memory 103 to realize the function of the control unit 9.
  • the memory 103 is also used as a temporary memory in each process executed by the processor 102.
  • the processor 102 is a CPU (Central Processing Unit), and is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor) or the like.
  • CPU Central Processing Unit
  • processing unit a processing unit
  • arithmetic unit a microprocessor
  • microcomputer a microcomputer
  • DSP Digital Signal Processor
  • the memory 103 is, for example, a non-volatile or volatile semiconductor memory such as a random access memory (RAM), a read only memory (ROM), a flash memory, an EPROM (erasable programmable ROM), an EEPROM (electrically EPROM), or a magnetic disk. is there.
  • RAM random access memory
  • ROM read only memory
  • flash memory an EPROM (erasable programmable ROM), an EEPROM (electrically EPROM), or a magnetic disk.
  • FIG. 4 is a flow chart showing the operation of the air conditioner 1A shown in FIG.
  • the control unit 9 incorporates a timer function, and counts an operation time after the heating operation is started (step S101). Control unit 9 determines whether the operating time has been 3 minutes or more (step S102). When the operating time is less than 3 minutes (step S102: No), the control unit 9 repeats the process of step S102. If the operating time is, for example, 3 minutes or more (step S102: Yes), the control unit 9 stores the command voltage of the fan motor 8 and sets it as an initial value of the command voltage (step S103).
  • the control unit 9 calculates the difference of the command voltage every predetermined time period, for example, every 30 seconds.
  • the difference between the command voltages is the absolute value of the difference between the previous value and the current value of the command voltage (step S104).
  • the control unit 9 performs disturbance correction.
  • Disturbance correction is processing for correcting the influence of wind outside the room, etc., and when the difference is outside a predetermined range, the value of the difference is set to zero.
  • the predetermined range is a range between the difference maximum value and the difference minimum value. If the difference calculated in step S104 is greater than or equal to the difference maximum value, and if the difference is less than the difference minimum value, the control unit 9 corrects the difference value to zero (step S105).
  • Control unit 9 updates the integrated value indicating the increase amount of the command voltage (step S106). Specifically, the control unit 9 adds the difference calculated in step S104 to the current integrated value to obtain a new integrated value.
  • Control unit 9 determines whether the updated integrated value is equal to or larger than a predetermined threshold (step S107). If the integrated value is equal to or greater than the threshold (step S107: Yes), the control unit 9 starts the preheating operation (step S108). If the integrated value is smaller than the threshold (step S107: No), the control unit 9 returns to the process of step S104.
  • Control unit 9 determines whether the elapsed time has exceeded the preheating operation time, which is a predetermined time length for performing the preheating operation (step S109). When the elapsed time does not exceed the preheating operation time (step S109: No), the control unit 9 repeats the process of step S109. When the elapsed time exceeds the preheating operation time (step S109: Yes), the control unit 9 starts the defrosting operation (step S110).
  • the control unit 9 of the air conditioner 1A performs the defrosting operation by using a predetermined threshold value for the integrated value indicating the increase amount of the command voltage. It is possible to start the preheating operation before the start of the defrosting operation that satisfies the condition to start.
  • the threshold value is determined in advance so that the integrated value exceeds the threshold value before the defrosting operation start time predicted based on the integrated value of the command voltage arrives.
  • the control unit 9 can start the preheating operation before the predicted defrost start time arrives. Therefore, the preheating operation can be started before the performance deterioration of the second heat exchanger 4 occurs, and it is possible to suppress the room temperature decrease during the defrosting operation while suppressing the increase of the power consumption. Become.
  • FIG. 5 is a diagram showing a schematic configuration of an air conditioner 1B according to Embodiment 2 of the present invention.
  • the air conditioner 1B includes, in addition to the configuration of the air conditioner 1A, an outside air temperature sensor 11 that measures an outside air temperature which is an air temperature outside the air conditioner 1B.
  • the control unit 9 of the air conditioner 1B can acquire the outside air temperature from the outside air temperature sensor 11.
  • the control unit 9 predicts the defrosting start time that satisfies the start condition of the defrosting operation based on the integrated value of the command voltage.
  • the control unit 9 also calculates a preheating operation time which is a time length for executing the preheating operation. Specifically, the control unit 9 performs the preheating operation based on the predicted value of the heat loss that is lost during the defrosting operation and the preheating ability that is the heating capacity that the air conditioner 1B can use for the preheating operation. Calculate the time. Since the predicted value of the heat loss which is lost during the defrosting operation and the preheating capacity change depending on the outside air temperature, the control unit 9 calculates the preheating operation time based on the outside air temperature. The control unit 9 corrects the preheating operation time in consideration of the response delay up to the maximum heating capacity, the capacity decrease due to frost formation, and the like.
  • the correction value ⁇ used for correcting the preheating operation time can be a variable of a value based on the outside air temperature.
  • the control unit 9 starts the preheating operation when the predicted time length until the start of defrosting becomes shorter than the calculated preheating operation time.
  • FIG. 6 is a flowchart showing the operation of the air conditioner 1B shown in FIG. Steps up to step S106 are the same as in the first embodiment, and thus the description thereof is omitted.
  • control unit 9 determines whether the integrated value is equal to or greater than threshold value B (step S201). When the integrated value is less than the threshold B (step S201: No), the control unit 9 returns to the process of step S104. If the integrated value is equal to or greater than the threshold B (step S201: Yes), the control unit 9 calculates a defrost start predicted prediction time and a preheating operation time, which are predicted values of the time taken to reach the defrost start time. Then, it is determined whether the calculated defrosting start attainment prediction time is equal to or less than the preheating operation time (step S202).
  • step S202: Yes If the defrosting start attainment prediction time is equal to or less than the preheating operation time (step S202: Yes), the control unit 9 starts the preheating operation (step S108). If the defrosting start attainment prediction time is less than the preheating operation time (step S202: No), the control unit 9 determines whether the integrated value is equal to or more than the threshold A (step S203).
  • step S203: Yes If the integrated value is equal to or larger than the threshold A (step S203: Yes), the control unit 9 starts the defrosting operation (step S110). If the integrated value is less than the threshold A (step S203: No), the control unit 9 returns to the process of step S104.
  • the air conditioner 1B starts the preheating operation before the defrosting start time predicted based on the command voltage. Therefore, the preheating operation can be started before the performance of the second heat exchanger 4 is reduced. Therefore, it is possible to raise the room temperature before the defrosting operation while suppressing the increase in power consumption by performing the preheating operation in the state where the performance of the heat exchanger is lowered, and to suppress the room temperature decrease during the defrosting operation It is possible.
  • FIG. 7 is an explanatory view of a method of calculating the preheating operation time of the air conditioner 1B shown in FIG.
  • the horizontal axis indicates the outside air temperature (° C.), and the vertical axis indicates the heating load or the heating capacity (kW).
  • the heating capacity when performing the heating operation is approximately equal to the required heating capacity 34
  • the required heating capacity 34 is approximately equal to the building load 33.
  • the building load 33 indicates the ease of heating or cooling of the building, and if the air conditioner 1B functions as a heating device, the building load 33 indicates the ease of heating of the building.
  • the building load 33 decreases as the outside temperature rises, and the required heating capacity 34 also decreases as the outside temperature rises.
  • the preheating capacity 35 of the air conditioner 1B is a value obtained by subtracting the building load 33 from the maximum heating capacity 31.
  • the control unit 9 can calculate the preheating operation time based on the defrosting operation time, the building load 33 and the preheating capacity 35. Since the preheating capacity 35 is a value obtained by subtracting the building load 33 from the maximum heating capacity 31 as described above, the control unit 9 calculates the preheating operation time based on the defrosting operation time, the building load 33 and the maximum heating capacity 31 can do.
  • the preheating operation time is expressed by the following equation (1).
  • Preheating operation time defrosting operation time x building load ⁇ (maximum heating capacity-building load) ... (1)
  • the control unit 9 can correct the preheating operation time by using the correction value ⁇ that corrects the response delay from the current heating capacity to the maximum heating capacity and the influence of the decrease in the maximum heating capacity due to frost formation.
  • the correction value ⁇ is a variable based on the outside air temperature.
  • the control unit 9 determines If it is shorter than one threshold, the heating capacity can be suppressed to make the preheating operation time longer than the first threshold. For example, when the preheating operation time is shorter than 4 minutes, the control unit 9 sets the preheating operation time to 6 minutes and suppresses the heating capacity by the amount of extension of the preheating operation time. By thus suppressing the heating capacity, the coefficient of performance is improved.
  • the performance coefficient is a value representing the heating capacity per 1 kW of power consumption, and can be obtained by dividing the heating capacity by the power consumption.
  • the control unit 9 calculates the second preheating operation time that is calculated in advance. If it is longer than the threshold value, the heating operation can be continued until the defrosting start time comes, without performing the preheating operation.
  • FIG. 8 is a view showing an example of the transition of the heating capacity 41 of the air conditioner 1B shown in FIG. 5, the integrated value 42 of the command voltage, and the evaporator temperature 43. As shown in FIG.
  • the control unit 9 performs the heating operation based on the difference between the set temperature and the indoor temperature. While performing the heating operation based on the difference between the set temperature and the indoor temperature, the control unit 9 determines whether or not the integrated value 42 of the command voltage is equal to or more than the threshold value B. Since the integrated value 42 of the command voltage indicates the amount of increase from the initial value of the command voltage, the increase and decrease are repeated in the state where the second heat exchanger 4 is not frosted.
  • the evaporator temperature 43 which is the temperature of the second heat exchanger 4 functioning as an evaporator, is gradually decreasing.
  • the controller 9 starts the preheating operation.
  • the control unit 9 starts the defrosting operation terminates the preheating operation. If defrosting start predicted arrival time integrated value 42 at time t 1 with equal to or greater than the threshold value B of the command voltage is longer than the pre-heating operation time, the control unit 9, the defrosting start predicted arrival time is below the preheating operation time Wait for until start the preheating operation.
  • the configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.
  • the defrosting operation start time point is predicted based on the command voltage
  • the present invention is not limited to such an example.
  • the start point of the defrosting operation can also be predicted based on the difference between the outside air temperature and the evaporator temperature that is the temperature of the second heat exchanger 4 operating as the evaporator.
  • the defrosting start time can be predicted based on the change in the value of the difference between the outside air temperature and the evaporator temperature.
  • the prediction accuracy is higher when the command voltage is used than when the difference between the outside air temperature and the evaporator temperature is used.
  • SYMBOLS 1A, 1B Air conditioner, 2 compressor, 3 1st heat exchanger, 4 2nd heat exchanger, 5 four-way valve, 6 expansion valve, 7 ventilation fan, 8 fan motor, 9 control part, 11 outside temperature Sensor, 31 maximum heating capacity, 32 minimum heating capacity, 33 building load, 34 required heating capacity, 35 preheating capacity, 41 heating capacity, 42 integrated value of command voltage, 43 evaporator temperature, 100, 101 processing circuit, 102 processor, 103 memory.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Climatiseur (1A) qui peut exécuter une opération de chauffage, une opération de dégivrage et une opération de préchauffage qui effectue de force l'opération de chauffage indépendamment des conditions de démarrage d'opération de chauffage, le climatiseur étant caractérisé en ce qu'il comprend une unité de commande (9) qui prédit un temps de début de dégivrage qui satisfait une condition pour démarrer l'opération de dégivrage et qui démarre l'opération de préchauffage avant le temps de début de dégivrage prédit.
PCT/JP2017/025423 2017-07-12 2017-07-12 Climatiseur et procédé de commande de climatiseur WO2019012628A1 (fr)

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PCT/JP2017/025423 WO2019012628A1 (fr) 2017-07-12 2017-07-12 Climatiseur et procédé de commande de climatiseur
JP2019529376A JPWO2019012628A1 (ja) 2017-07-12 2017-07-12 空気調和機および空気調和機の制御方法

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PCT/JP2017/025423 WO2019012628A1 (fr) 2017-07-12 2017-07-12 Climatiseur et procédé de commande de climatiseur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024069704A1 (fr) * 2022-09-26 2024-04-04 三菱電機株式会社 Dispositif de conversion de puissance électrique, dispositif d'entraînement de moteur et appareil d'application de cycle de réfrigération

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63231131A (ja) * 1987-03-20 1988-09-27 Hitachi Ltd ヒ−トポンプ式空気調和機
WO2016084139A1 (fr) * 2014-11-26 2016-06-02 日立アプライアンス株式会社 Climatiseur
JP2016142505A (ja) * 2015-02-05 2016-08-08 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド 空気調和機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63231131A (ja) * 1987-03-20 1988-09-27 Hitachi Ltd ヒ−トポンプ式空気調和機
WO2016084139A1 (fr) * 2014-11-26 2016-06-02 日立アプライアンス株式会社 Climatiseur
JP2016142505A (ja) * 2015-02-05 2016-08-08 ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド 空気調和機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024069704A1 (fr) * 2022-09-26 2024-04-04 三菱電機株式会社 Dispositif de conversion de puissance électrique, dispositif d'entraînement de moteur et appareil d'application de cycle de réfrigération

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