WO2010074316A1 - Appareil de commande de conditionnement d'air, système de refroidissement et programme de commande de conditionnement d'air - Google Patents

Appareil de commande de conditionnement d'air, système de refroidissement et programme de commande de conditionnement d'air Download PDF

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Publication number
WO2010074316A1
WO2010074316A1 PCT/JP2009/071856 JP2009071856W WO2010074316A1 WO 2010074316 A1 WO2010074316 A1 WO 2010074316A1 JP 2009071856 W JP2009071856 W JP 2009071856W WO 2010074316 A1 WO2010074316 A1 WO 2010074316A1
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WIPO (PCT)
Prior art keywords
temperature
air
store
cooling
time
Prior art date
Application number
PCT/JP2009/071856
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English (en)
Japanese (ja)
Inventor
藤原正人
渡辺恵子
大熊利明
小澤芳男
Original Assignee
三洋電機株式会社
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.)
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Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to CN200980152478.3A priority Critical patent/CN102272533B/zh
Priority to US13/140,594 priority patent/US20120042672A1/en
Publication of WO2010074316A1 publication Critical patent/WO2010074316A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Definitions

  • the present invention relates to an air conditioning control device, a cooling system, and an air conditioning control program for controlling an air conditioner (also referred to as an air conditioner for short).
  • an air conditioner also referred to as an air conditioner for short.
  • an air conditioner having an indoor unit and an outdoor unit connected by a refrigerant pipe has been widely used.
  • moisture in the room air is removed along with cooling by the air conditioner.
  • the power consumed by the air conditioner for cooling the room includes power necessary for dehumidification.
  • a technique using a desiccant humidity control apparatus provided with a dehumidifying material for removing moisture in the room air has been proposed (for example, see Patent Document 1).
  • the dehumidifying operation for dehumidifying the room is performed before the cooling operation for cooling the room.
  • the room cooled by the air conditioner targeted by the present invention is a store that sells food like a supermarket, the sensible heat in the store during the cooling operation in the afternoon in summer, etc. Since the latent heat load is removed when removing the load, the power consumption of the air conditioner increases by the amount of processing of the latent heat load.
  • the present invention performs daytime air conditioner power consumption peak by performing dehumidification (removal of latent heat load) in a store during a time period when the sensible heat load is small, such as in the morning when the outdoor temperature is low in summer.
  • the temperature is lower than the temperature of the cold air blown into the store during the cooling operation before and / or after the closing of the store selling food such as a supermarket, and the cooling operation.
  • the dehumidifying operation is performed in which cool air in a state smaller than the amount of cool air blown at the time is blown into the store.
  • An air conditioning control device is an air conditioning control device that controls an air conditioner having an indoor unit and an outdoor unit connected by a refrigerant pipe, and performs a cooling operation for cooling a room in which the indoor unit is installed.
  • the gist of the present invention is to provide a control unit that executes a dehumidifying operation for removing moisture in the room before the execution.
  • the air conditioning control device since the dehumidifying operation is executed before the cooling operation is performed, the necessity of dehumidifying simultaneously with the cooling operation can be suppressed. Therefore, the electric power required for dehumidification during the cooling operation can be omitted.
  • An air conditioning control device includes a predicted outdoor temperature acquisition unit that acquires a predicted outdoor temperature outside an outdoor unit in which an outdoor unit is installed, a cooling time zone in which a cooling operation is performed based on the predicted outdoor temperature, A time zone setting unit that sets a dehumidification time zone in which the dehumidifying operation is performed, and the time zone setting unit may set the dehumidification time zone in a time zone in which the predicted outdoor temperature is lower than a predetermined threshold.
  • An air conditioning control device includes an indoor temperature acquisition unit that acquires an indoor temperature in a room, a cooling time zone in which a cooling operation is executed based on the indoor temperature, and a dehumidifying time zone in which a dehumidifying operation is executed And a time zone setting unit that sets only the room temperature or the temperature difference between the set temperature of the cooling operation and the room temperature is smaller than a predetermined threshold before the cooling time zone.
  • a dehumidifying time zone may be set as the time zone.
  • the air conditioning control device performs a predicted heat load acquisition unit that acquires a predicted heat load in a room, a cooling time zone in which a cooling operation is performed, and a dehumidifying operation based on the predicted heat load.
  • a time zone setting unit that sets a dehumidifying time zone, and the time zone setting unit may set the dehumidifying time zone in a time zone in which the predicted heat load is smaller than a predetermined threshold.
  • the indoor unit has a fan that blows air into the room
  • the outdoor unit has a compressor that compresses the refrigerant flowing through the refrigerant pipe
  • the control unit performs dehumidification operation.
  • a cooling system includes an air conditioner having an indoor unit and an outdoor unit connected by a refrigerant pipe, a showcase installed in a room where the indoor unit is installed, and a refrigerant supplied to the showcase
  • a cooling system comprising a refrigerator having a refrigerator and an air conditioning control device that controls the air conditioner and the cooling device, wherein the air conditioning control device cools the temperature of the room in which the indoor unit is installed
  • the gist of the present invention is to provide a control unit that executes a dehumidifying operation for removing moisture in the room before the operation is performed.
  • An air conditioning control program removes moisture in a room where an indoor unit is installed in a computer that functions as an air conditioning control device that controls an air conditioner having an indoor unit and an outdoor unit connected by a refrigerant pipe.
  • the gist is that the process A for performing the dehumidifying operation and the process B for performing the cooling operation for cooling the indoor temperature after the process A are executed.
  • the room cooled by the air conditioner targeted by the present invention is a store that sells foods like a supermarket, it has the following characteristics.
  • the present invention provides an air conditioner control apparatus for a store air conditioner that allows air-conditioning operation to start at a predetermined operation start time and stop air-conditioning operation at an operation end time.
  • the opening time of the store and the closing time of the store are set between the closing time and the opening time of the store and / or between the closing time of the store and the closing time of the operation. If the outside air temperature is lower than the predetermined temperature, store the cool air that is designed to be lower than the temperature of the cool air blown into the store during the cooling operation performed between the store opening time and the store closing time and with less air flow It is characterized by performing an operation of blowing out.
  • the cooling operation includes a refrigeration cycle in which at least a refrigerant compressor, a condenser, a decompression device, and an evaporator are connected in an annular shape with refrigerant piping, and cooling when the refrigerant evaporates in the evaporator.
  • the predetermined temperature is a temperature set in advance based on past outside air temperature information, outside air temperature information available from the outside, etc. on the day before the operation start time. Further, in the present invention, when the temperature in the store becomes the set room temperature or higher, the same cooling operation as the cooling operation performed between the store opening time and the store closing time is performed from the operation start time to the store opening time. And / or between the closing time of the store and the operation end time. Further, the present invention is characterized in that the operation start time for starting the air conditioning operation is set following the operation end time for stopping the air conditioning operation, and the air conditioning operation continues continuously.
  • an air conditioner control apparatus for an air conditioner for a store that operates for 24 hours in a 24-hour store, when the outside air temperature is lower than a predetermined temperature during the 24-hour cooling operation, It is characterized by performing an operation of blowing out cool air, which is designed to be lower than the temperature of the cool air blown into the store in the cooling operation and with a small amount of air blown into the store.
  • the cooling operation includes a refrigeration cycle in which at least a refrigerant compressor, a condenser, a decompression device, and an evaporator are connected in a ring shape with a refrigerant pipe, and when the refrigerant evaporates in the evaporator.
  • the predetermined temperature is a temperature set in advance based on past outside air temperature information, outside air temperature information available from the outside, etc. on the day before the business hours of the store on the day.
  • the present invention is characterized in that when the temperature in the store becomes equal to or higher than the set room temperature, a cooling operation similar to the cooling operation performed during the business hours of the store is performed.
  • the air-conditioning control apparatus which can suppress the electric power consumed by an air conditioner in order to cool a room
  • the fan cooling
  • the fan cooling of an indoor unit of an air conditioner that cools the store in an appropriate time zone, for example, in the morning when the outdoor temperature in summer is low.
  • dehumidification in the store is performed in an appropriate time zone, for example, in the morning when the outdoor air temperature is low in summer, or in a time zone where the sensible heat load is small.
  • the heat load of the freezer / refrigerated showcase can be reduced, and the power consumption of the refrigerator connected to the freezer / refrigerated showcase can be reduced.
  • FIG. 1 is a diagram showing an outline of a cooling system 1 according to the first embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration of the air conditioning control device 13 according to the first embodiment of the present invention.
  • FIG. 3 is a graph showing an example of weather information.
  • FIG. 4 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the weather information.
  • FIG. 5 is a flowchart showing the operation of the air conditioning control device 13 according to the first embodiment of the present invention.
  • FIG. 6 is a diagram for explaining the effect according to the first embodiment of the present invention.
  • FIG. 7 is a diagram showing a configuration of an air conditioning control device 13 according to the second embodiment of the present invention.
  • FIG. 1 is a diagram showing an outline of a cooling system 1 according to the first embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration of the air conditioning control device 13 according to the first embodiment of the present invention.
  • FIG. 3 is a graph
  • FIG. 8 is a diagram showing a configuration of an air conditioning control device 13 according to the third embodiment of the present invention.
  • FIG. 9 is an example of a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the predicted heat load.
  • FIG. 10 is a diagram showing a configuration of an air conditioning control device 13 according to the fourth embodiment of the present invention.
  • FIG. 11 is a diagram showing a display example of the display unit 137 according to the fourth embodiment of the present invention.
  • FIG. 12 is a cross-sectional view showing an example of an open showcase according to the present invention.
  • FIG. 13 is a refrigerant circuit diagram showing the configuration of the open showcase refrigerator according to the present invention.
  • FIG. 14 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and weather information according to the sixth embodiment of the present invention.
  • FIG. 15 is a graph showing a relationship between a dehumidifying time zone and a cooling time zone and weather information according to the seventh embodiment of the present invention.
  • FIG. 16 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the outside air temperature according to the eighth embodiment of the present invention.
  • FIG. 17 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the outside air temperature according to the ninth embodiment of the present invention.
  • FIG. 15 is a graph showing a relationship between a dehumidifying time zone and a cooling time zone and weather information according to the seventh embodiment of the present invention.
  • FIG. 16 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the outside air temperature according to the eighth embodiment of the present invention.
  • FIG. 17 is a graph showing
  • FIG. 18 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the in-store temperature according to the tenth embodiment of the present invention.
  • FIG. 19 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the in-store temperature according to the eleventh embodiment of the present invention.
  • FIG. 20 is a graph when the dehumidifying operation and the cooling operation are performed in the relationship between the dehumidifying time zone and the cooling time zone, the outside air temperature, and the outside air humidity according to the twelfth embodiment of the present invention.
  • FIG. 20 is a graph when the dehumidifying operation and the cooling operation are performed in the relationship between the dehumidifying time zone and the cooling time zone, the outside air temperature, and the outside air humidity according to the twelfth embodiment of the present invention.
  • FIG. 21 is a graph in the case where only the dehumidifying operation is performed in the relationship between the dehumidifying time zone and the cooling time zone, the outside air temperature, and the outside air humidity according to the twelfth embodiment of the present invention.
  • FIG. 22 is a graph when there is no dehumidifying operation in the relationship between the dehumidifying time zone and the cooling time zone, the outside air temperature and the outside air humidity according to the twelfth embodiment of the present invention.
  • FIG. 23 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the in-store temperature according to the thirteenth embodiment of the present invention.
  • FIG. 24 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the in-store temperature according to the fourteenth embodiment of the present invention.
  • FIG. 25 is an enlarged view of the dotted ellipse in FIG.
  • FIG. 1 is a diagram showing an outline of a cooling system 1 according to the first embodiment of the present invention.
  • the cooling system 1 includes an indoor unit 11, an outdoor unit 12, an air conditioning control device 13, a refrigerator 21, and a showcase 22.
  • the facility 10 in which the indoor unit 11 and the showcase 22 are accommodated is, for example, a store such as a convenience store or a supermarket.
  • the indoor unit 11 and the outdoor unit 12 constitute an air conditioner (synonymous with an air conditioner) that adjusts the temperature and humidity in the facility 10.
  • the indoor unit 11 and the outdoor unit 12 are connected by a refrigerant pipe P.
  • Each of the indoor unit 11 and the outdoor unit 12 is connected to the air conditioning control device 13 by a communication line Q.
  • the indoor unit 11 is installed in the room of the facility 10.
  • the indoor unit 11 includes a heat exchanger 111, a fan 112, and a temperature / humidity sensor 113.
  • the heat exchanger 111 cools indoor air using the refrigerant flowing through the refrigerant pipe P.
  • the fan 112 blows the air cooled by the heat exchanger 111 into the room.
  • the temperature / humidity sensor 113 detects the temperature and humidity in the room in real time.
  • the outdoor unit 12 is installed outside the facility 10.
  • the outdoor unit 12 includes a heat exchanger 121, a fan 122, a compressor 123, a four-way valve 124, and an expansion valve 125.
  • the heat exchanger 121 removes the heat of the refrigerant flowing in the refrigerant pipe P to the outside.
  • the fan 122 blows air to the heat exchanger 121.
  • the compressor 123 sucks the low-temperature and low-pressure refrigerant flowing from the indoor unit 11 side and discharges the high-temperature and high-pressure refrigerant.
  • the four-way valve 124 is used to reverse the refrigerant flow during cooling and during heating.
  • the expansion valve 125 expands the refrigerant flowing from the heat exchanger 121 and sends it to the indoor unit 11 side.
  • the refrigerator 21 and the showcase 22 constitute a cooler for cooling the cooling space of the showcase 22.
  • the refrigerator 21 and the showcase 22 are connected by a refrigerant pipe.
  • Each of the refrigerator 21 and the showcase 22 is connected to the air conditioning control device 13 by a communication line Q.
  • the refrigerator 21 supplies a refrigerant to the showcase 22.
  • the showcase 22 may be a frozen showcase that freezes the product, or may be a refrigerated showcase that refrigerates the product. Examples of the showcase 22 include an open showcase in which a door or the like is not provided so that a customer can freely take out a product, and a closed showcase in which a door is provided in order to increase cooling efficiency.
  • the air conditioning control device 13 controls the air conditioner (the indoor unit 11 and the outdoor unit 12) and the cooler (the refrigerator 21 and the showcase 22) in cooperation with each other via the communication line Q. Controlling the air conditioner and the cooler in cooperation means that the other control is executed while considering one operation state.
  • the present invention relates to control of an air conditioner by the air conditioning control device 13.
  • the air conditioning control device 13 controls the air conditioner to perform a cooling operation for cooling the room of the facility 10 and a dehumidifying operation for removing moisture in the room. Specifically, the air conditioning control device 13 controls the air volume of the fan 112, the low pressure of the compressor 123, and the like. Further, the air conditioning control device 13 receives the detection result of the temperature / humidity sensor 113 via the communication line Q. (Configuration of air conditioning controller) Below, the structure of the air-conditioning control apparatus which concerns on 1st Embodiment of this invention is demonstrated, referring drawings.
  • FIG. 2 is a diagram showing a configuration of the air conditioning control device 13 according to the first embodiment of the present invention. As shown in FIG.
  • the air conditioning control device 13 includes a communication unit 131, a predicted outdoor temperature acquisition unit 132, a time zone setting unit 133, and a control unit 134.
  • the communication unit 131 receives the detection result of the indoor temperature and humidity from the temperature / humidity sensor 113.
  • the communication unit 131 transmits a control signal from the control unit 134 to the indoor unit 11 and the outdoor unit 12.
  • the predicted outdoor temperature acquisition unit 132 is based on a database that stores past weather information (for example, information for the past several years near the facility 10) via an external network such as the Internet. Information (predicted outdoor temperature, predicted outdoor humidity, weather prediction, etc.) is acquired.
  • FIG. 3 is a graph illustrating an example of the predicted outdoor temperature and the predicted outdoor humidity acquired by the predicted outdoor temperature acquisition unit 132.
  • the coefficient of performance COP (the value obtained by dividing the cooling capacity of the air conditioner by the energy consumption of the air conditioner) during the cooling operation increases as the outside air temperature decreases.
  • the coefficient of performance COP of the air conditioner during the cooling operation tends to increase from night to early morning.
  • the time zone setting unit 133 sets a cooling time zone in which the cooling operation is executed and a dehumidifying time zone in which the dehumidifying operation is executed based on the predicted outdoor temperature. As shown in FIG. 4, the time zone setting unit 133 sets a dehumidification time zone before the cooling time zone.
  • the time zone setting unit 133 sets the dehumidifying time zone in a time zone where the predicted outdoor temperature is lower than the threshold value ⁇ (° C.).
  • the dehumidifying time zone is determined by the dehumidifying start time and the dehumidifying end time.
  • the dehumidification start time is set to a set time or an arbitrary time set by the user in a time zone in which the predicted outdoor temperature is lower than the threshold value ⁇ (° C.).
  • the dehumidification end time can be, for example, a time when the real-time indoor absolute humidity reaches the target absolute humidity.
  • the target absolute humidity can be set to a value obtained by adding a predetermined steam amount to the saturated steam amount of the indoor air corresponding to the refrigerant temperature of the heat exchanger 111.
  • the dehumidification end time may be predetermined after a predetermined time determined from the dehumidification start time and the dehumidifying operation time set by the user.
  • the time zone setting unit 133 sets the cooling time zone in a time zone where the predicted outdoor temperature is equal to or higher than the threshold value ⁇ (° C.). The cooling time zone is determined by the cooling start time and the cooling end time.
  • the cooling start time may be set at the same time as the dehumidification end time, or may be set after elapse of a predetermined time from the dehumidification end time in a time zone in which the predicted outdoor temperature is higher than the threshold value ⁇ (° C.). Good.
  • the cooling time zone is preferably close to the dehumidifying time zone.
  • the cooling end time may be predetermined after a predetermined time from the cooling start time.
  • the cooling end time and the dehumidification start time may be the same time.
  • the control unit 134 causes the indoor unit 11 and the outdoor unit 12 to perform a cooling operation in the cooling time zone set by the time zone setting unit 133.
  • control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the control unit 134 causes the indoor unit 11 and the outdoor unit 12 to perform a dehumidifying operation in the dehumidifying time zone set by the time zone setting unit 133. Specifically, at the dehumidification start time, the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • FIG. 5 is a flowchart showing the operation of the air conditioning control device 13 according to the first embodiment of the present invention.
  • the air conditioning control device 13 acquires the predicted outdoor temperature on the day for controlling the indoor unit 11 and the outdoor unit 12.
  • the air conditioning control device 13 sets a cooling time zone and a dehumidifying time zone based on the predicted outdoor temperature.
  • the air conditioning control device 13 sets the dehumidifying time zone in a time zone where the predicted outdoor temperature is lower than the threshold value ⁇ (° C.).
  • the dehumidification end time can be the time when the real-time indoor humidity reaches the target humidity.
  • step S12 the air-conditioning control device 13 determines whether or not the dehumidification start time has been reached. When the dehumidification start time is reached, the process proceeds to step S13. If the dehumidification start time has not been reached, the process repeats step S12.
  • step S13 the air conditioning controller 13 controls the low pressure of the compressor 123 to the second pressure.
  • the second pressure is lower than the first pressure during the cooling operation.
  • step S14 the air conditioning controller 13 controls the air volume of the fan 112 to the second air volume.
  • the second air volume is smaller than the average value of the first air volume during the cooling operation.
  • step S15 the air conditioning control device 13 determines whether or not the dehumidification end time has been reached. When the dehumidification end time is reached, the process proceeds to step S16. If the dehumidification end time has not been reached, the process returns to step S13.
  • step S ⁇ b> 16 the air conditioning control device 13 once ends the control of the compressor 123 and the fan 112.
  • step S ⁇ b> 17 the air conditioning control device 13 determines whether or not the cooling start time has been reached.
  • step S18 the air conditioning control device 13 controls the low pressure of the compressor 123 to the first pressure.
  • the first pressure is higher than the second pressure during the dehumidifying operation.
  • step S19 the air conditioning controller 13 controls the air volume of the fan 112 to the first air volume.
  • the first air volume is usually larger than the second air volume during the dehumidifying operation.
  • step S20 the air conditioning control device 13 determines whether or not the cooling end time has been reached. When the cooling end time is reached, the process ends. If the cooling end time has not been reached, the process returns to step S18.
  • the air conditioning control device 13 executes a dehumidifying operation for removing moisture in the room before performing a cooling operation for cooling the room in which the indoor unit 11 is installed.
  • a dehumidifying operation for removing moisture in the room before performing a cooling operation for cooling the room in which the indoor unit 11 is installed.
  • the dehumidifying operation since the dehumidifying operation is performed before the cooling operation is performed, the necessity of dehumidifying simultaneously with the cooling operation can be suppressed. Therefore, it is possible to omit the power required for dehumidification during the cooling operation. Therefore, it is possible to suppress the power consumed by the air conditioner to cool the room.
  • the peak of power consumption can be reduced from P1 (kW) to P2 (kW).
  • the air conditioning control device 13 sets the dehumidifying time zone in a time zone in which the predicted outdoor temperature is smaller than the threshold value ⁇ (° C.). That is, the air conditioning control device 13 can efficiently dehumidify the room in a time zone in which the coefficient of performance COP of the air conditioner during the cooling operation is high. Therefore, the power consumed by the air conditioner to dehumidify the room can be suppressed. Specifically, as shown in FIG.
  • the dehumidifying operation when the dehumidifying operation is performed simultaneously with the cooling operation, the dehumidifying operation requires the electric energy A, whereas when the dehumidifying operation is performed before the cooling operation, A power amount B ( ⁇ power amount A) is required for the dehumidifying operation. Therefore, it is possible to reduce the total amount of power required for indoor cooling.
  • the time zone setting unit 133 sets the cooling time zone and the dehumidifying time zone based on the predicted outdoor temperature.
  • FIG. 7 is a diagram showing a configuration of an air conditioning control device 13 according to the second embodiment of the present invention.
  • the air conditioning control device 13 includes an indoor temperature acquisition unit 135.
  • the room temperature acquisition unit 135 receives the room temperature T from the temperature / humidity sensor 113 in real time via the communication line Q. i To get.
  • the time zone setting unit 133 is connected to the set temperature T of the cooling operation via the communication line Q. S To get.
  • the time zone setting unit 133 determines whether the room temperature T i And set temperature T for cooling operation S
  • the cooling time zone and the dehumidifying time zone are set based on the temperature difference
  • the time zone setting unit 133 sets a dehumidifying time zone before the cooling time zone. Specifically, the time zone setting unit 133 calculates the temperature difference
  • the threshold value ⁇ (° C.) can be set to about 1 to 2 (° C.), for example.
  • the dehumidification start time is set by an arbitrary time or a user in a time when the temperature difference
  • the set time is set.
  • the dehumidification end time is the time when the temperature difference
  • the time zone setting unit 133 sets the time when the temperature difference
  • the time zone setting unit 133 sets the cooling time zone in a time zone where the temperature difference
  • the cooling start time may be set simultaneously with the dehumidification end time, or is set after a predetermined time has elapsed from the dehumidification end time in a time zone in which the temperature difference
  • the cooling time zone is preferably close to the dehumidifying time zone.
  • the cooling end time may be predetermined after a predetermined time from the cooling start time.
  • the cooling end time and the dehumidification start time may be the same time.
  • the control unit 134 causes the indoor unit 11 and the outdoor unit 12 to perform a cooling operation in the cooling time period.
  • the control unit 134 causes the indoor unit 11 and the outdoor unit 12 to perform a dehumidifying operation in the dehumidifying time zone.
  • the air conditioning control device 13 has a room temperature T i And set temperature T for cooling operation S A dehumidifying time zone is set in a time zone where the temperature difference
  • the time zone setting unit 133 sets the cooling time zone and the dehumidifying time zone based on the predicted outdoor temperature.
  • the time zone setting unit 133 sets a cooling time zone and a dehumidifying time zone based on the predicted indoor thermal load Q [kW].
  • the predicted thermal load Q in the room is heat that enters the room per unit time.
  • the air conditioning control device 13 includes a predicted heat load acquisition unit 136.
  • the predicted heat load acquisition unit 136 is connected to an external network such as the Internet or from a database that stores past weather information (for example, information for the past several years). Outdoor temperature, predicted outdoor humidity, weather forecast, etc.).
  • the predicted heat load acquisition unit 136 acquires the predicted indoor temperature and the predicted indoor humidity of the day from a database that stores them.
  • the predicted thermal load acquisition unit 136 acquires various information necessary for calculating the predicted thermal load Q from a predetermined database.
  • the predicted thermal load acquisition unit 136 calculates the predicted thermal load Q using the above-described various information.
  • the predicted heat load Q includes solar radiation heat Q1, outer wall conduction heat Q2, glass window conduction heat Q3, roof conduction heat Q4, human body generated heat Q5, lighting generated heat Q6, equipment generated heat Q7, and outside air heat (ventilation).
  • the predicted heat load Q is calculated by subtracting the showcase replacement air heat Q9 from the sum of Q8 (which is the heat of the air and determined by the ventilation frequency method). That is, the predicted heat load Q is obtained by the following equation (1).
  • each of the heats Q1 to Q9 will be described in detail.
  • the solar radiation heat Q1 is calculated
  • the outer wall conduction heat Q2 is calculated
  • the glass window conduction heat Q3 is calculated
  • the roof conduction heat Q4 is calculated
  • the human body generated heat Q5 is obtained by the following equation (6).
  • the illumination generated heat Q6 is obtained by the following equation (7).
  • the device generated heat Q7 is obtained by the following equation (8).
  • the indoor equipment is equipment that generates heat indoors, such as a personal computer, a copy machine, and a microwave oven.
  • the outside air heat Q8 is calculated
  • the showcase replacement air heat Q9 is obtained by the following equation (10).
  • r1 is the showcase replacement air thermal load factor
  • r2 is the required refrigeration capacity of the showcase [kW]
  • r3 is the enthalpy [kJ / kg] of the air in the showcase
  • r4 is the showcase. It is assumed that the enthalpy of ambient air (at the required refrigeration capacity) [kJ / kg].
  • the time zone setting unit 133 acquires the predicted thermal load Q described above.
  • the time zone setting unit 133 sets a cooling time zone and a dehumidifying time zone based on the predicted heat load Q. As shown in FIG. 9, the time zone setting unit 133 sets a dehumidifying time zone before the cooling time zone.
  • the time zone setting unit 133 sets the dehumidification time zone in a time zone in which the predicted thermal load Q is lower than the threshold value ⁇ [kW].
  • the dehumidification start time is set to a set time or an arbitrary time set by the user in a time zone in which the predicted heat load Q is lower than the threshold value ⁇ [kW].
  • the dehumidification end time is the time when the predicted thermal load Q becomes equal to or higher than the threshold ⁇ [kW], the arbitrary time in the time zone where the predicted thermal load Q is lower than the threshold ⁇ [kW], or the dehumidification start time and the user It is set at a set time determined from the set dehumidifying operation time.
  • the time zone setting unit 133 sets the cooling time zone in a time zone in which the predicted thermal load Q is equal to or greater than the threshold ⁇ [kW].
  • the cooling time zone is determined by the cooling start time and the cooling end time.
  • the cooling start time may be set at the same time as the dehumidification end time, or may be set after elapse of a predetermined time from the dehumidification end time in a time zone in which the predicted thermal load Q is equal to or greater than the threshold value ⁇ [kW]. Good.
  • the cooling end time may be predetermined after a predetermined time from the cooling start time.
  • the control unit 134 causes the indoor unit 11 and the outdoor unit 12 to perform a cooling operation in the cooling time zone set by the time zone setting unit 133. (Function and effect)
  • the air conditioning control device 13 sets a dehumidifying time zone in a time zone in which the predicted thermal load Q is smaller than the threshold value ⁇ [kW].
  • the air-conditioning control device 13 is used indoors in a time zone in which the predicted heat load Q (° C.) in the room is smaller than the threshold value ⁇ [kW], that is, in a time zone in which the coefficient of performance COP of the air conditioner is high during cooling operation. Can be efficiently dehumidified. Therefore, the power consumed by the air conditioner to dehumidify the room can be suppressed.
  • a fourth embodiment of the present invention will be described with reference to the drawings. In the following, differences between the first embodiment and the fourth embodiment described above will be mainly described. (Configuration of air conditioning controller)
  • the configuration of the air conditioning control device according to the fourth embodiment of the present invention will be described with reference to the drawings.
  • FIG. 10 is a diagram showing a configuration of an air conditioning control device 13 according to the fourth embodiment of the present invention.
  • the air conditioning control device 13 according to the fourth embodiment includes a display unit 137.
  • the display unit 137 is, for example, a personal computer display.
  • the control state of the air conditioner by the control unit 134 is displayed.
  • FIG. 11 is a diagram illustrating a display example of the display unit 137. Specifically, an initial screen is displayed on the display unit 137 as shown in FIG. The user can select the energy saving operation mode and the normal operation mode on the initial screen.
  • the energy saving operation mode is a mode in which the dehumidifying time zone is set before the cooling time zone.
  • the normal operation mode is a mode in which the dehumidifying time zone is not set before the cooling time zone.
  • the normal operation mode screen is displayed on the display unit 137 as shown in FIG.
  • the set temperature of the cooling operation, the operation state (“running” or “stopped”), and the like are displayed.
  • the energy saving operation mode screen is displayed on the display unit 137 as shown in FIG.
  • a set temperature, a room humidity, an operation type (“cooling operation” or “dehumidifying operation”), a setting button, and the like of the cooling operation are displayed.
  • the setting screen is displayed on the display unit 137 as shown in FIG.
  • the user can check and set the dehumidification start time and dehumidification end time, target humidity, store type, and the like on the setting screen.
  • the cooling time zone may not be set.
  • the air conditioning control device 13 determines that the predicted outdoor temperature is the set temperature T.
  • the cooling time zone is not set.
  • the air conditioning control device 13 installed in an office building or the like does not have to set the dehumidifying time zone when the cooling time zone is not set.
  • the air conditioning control device 13 installed in a store with a showcase may set the dehumidifying time zone even when the cooling time zone is not set. In the case where the cooling system 1 includes the showcase 22, the heat load on the showcase 22 can be reduced by executing the dehumidifying operation, so that the power consumption of the refrigerator can be reduced.
  • the predicted outdoor temperature and predicted heat are used as indicators for setting the dehumidifying time zone in a time zone in which the coefficient of performance COP of the air conditioner during the cooling operation is high and the necessity for indoor cooling is small.
  • Load or room temperature T i And set temperature T for cooling operation S the present invention is not limited to this.
  • the real-time indoor temperature T i A real-time outdoor temperature or a temperature difference between a real-time outdoor temperature and a real-time indoor temperature can be used.
  • zone were set continuously, both do not need to be continuous. Specifically, a time that does not affect indoor humidity may be provided between the dehumidifying time zone and the cooling time zone.
  • the cooling time zone and the dehumidifying time zone are set discontinuously, but both may be continuous.
  • the entire time zone other than the dehumidifying time zone is set as the cooling time zone.
  • the cooling time zone is set to daytime. However, depending on the business condition of the facility 10, the cooling time zone may be set at midnight or early morning as long as it is after the dehumidification time zone. .
  • the present invention does not limit the time zone in which the cooling time zone should be set in one day.
  • the time zone setting unit 133 sets the cooling time zone and the dehumidifying time zone to the room temperature T i And set temperature T for cooling operation S Is set based on the temperature difference
  • the time zone setting unit 133 sets the room temperature T i Is acquired in real time and the room temperature T i
  • a dehumidifying time zone is set in a time zone where is smaller than the threshold value ⁇ (° C.).
  • the threshold value ⁇ (° C.) can be set to about 20 to 22 (° C.), for example.
  • the air-conditioning control device 13 uses the indoor temperature T i Can be efficiently dehumidified in a time zone in which the air temperature is lower than the threshold ⁇ (° C.), that is, a time zone in which the outside air temperature is low and the coefficient of performance COP of the air conditioner is high during the cooling operation. Therefore, the power consumed by the air conditioner to dehumidify the room can be suppressed.
  • the threshold values ⁇ , ⁇ , ⁇ , and ⁇ are obtained from past actual measurement data and experiments.
  • the hardware configuration of the air conditioning control device 13 described above can be realized as a program module.
  • the processing executed in the air conditioning control device 13 described above may be executed by a general-purpose computer having the function of the air conditioning control device 13 or the like.
  • the temperature is lower than the cold air temperature blown into the store in the cooling operation (also referred to as cooling operation) before the opening of the store that sells food like a supermarket and / or after the closing time, and A dehumidifying operation is performed in which cool air in a state smaller than the amount of cool air blown in the cooling operation (also referred to as cooling operation) is blown into the store.
  • FIG. 1 A sixth embodiment will be described based on FIG. A control method in the case where the predicted outside air temperature (or predicted heat load calculation value) is used in a store whose business hours are not 24 hours will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners. Is.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation for the next day is determined on the previous day. Since the store according to FIG.
  • the air conditioning control device 13 includes the predicted heat load acquisition unit 136.
  • the predicted heat load acquisition unit 136 is connected to an external network such as the Internet or from a database that stores past weather information (for example, information for the past several years). Outdoor temperature, predicted outdoor humidity, weather forecast, etc.). In addition, the predicted heat load acquisition unit 136 acquires the predicted indoor temperature and the predicted indoor humidity of the day from a database that stores them. Calculation of the predicted heat load Q uses the calculation formula (1) of the predicted heat load Q described above. Referring to FIG. 14, for the time zone of the dehumidifying operation, the threshold value ⁇ is set to, for example, the outside air temperature of 30 ° C., and the start time of the dehumidifying operation is the time zone where the predicted outside air temperature is expected to be smaller than the threshold value ⁇ ( In FIG.
  • the time near the air conditioning start time of the store (for example, 5:00 am) from 0:00 am to 9:00 am is set as the start time of the dehumidifying operation.
  • 5:00 am is the start time of the dehumidifying operation.
  • the end time of the dehumidifying operation is a time at which the predicted outside air temperature is expected to be equal to or higher than the threshold value ⁇ .
  • 9:00 am is the end time.
  • the room temperature becomes equal to or higher than a set value (for example, 25 ° C. or higher) during the dehumidifying operation, the dehumidifying operation is stopped and the operation mode is changed to the cooling operation mode. Referring to FIG.
  • the time zone of the cooling operation all the time zones other than the dehumidifying operation in the air conditioning time zone of the store are the cooling operation time zones. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the store's air conditioning time period is the store's preparation start time to clean-up end time, or the store's opening time to closing time, and is set in advance by the store manager It is time zone to do. In FIG. 14, it is from 5:00 am to 11:00 pm (5 pm to 23:00).
  • the cooling operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the air conditioner operation is started in the air conditioner control device for the store air conditioner that enables the timer operation to start the air conditioner operation at a predetermined operation start time and stop the air conditioner operation at the operation end time.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and the outside air temperature is a predetermined temperature (threshold ⁇ ) between the start time of the operation and the opening time of the store.
  • the engine is operated to blow out the designed cool air that is lower than the temperature of the cool air blown into the store during the cooling operation performed between the store opening time and the store closing time and designed with a small amount of air flow. It will be. Note that the control of the cooling operation (cooling operation) described above is based on the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning control device 13, and the operation of the compressor 123 and the fan 112 is controlled by the air conditioning control.
  • the compressor 123 and the fan 112 can be operated at a low speed at the lowest frequency. Further, the control of the cooling operation (cooling operation) described above is based on the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning control device 13, and the operation of the compressor 123 and the fan 112 is controlled by the air conditioning control.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation for the next day (starting at midnight) is determined on the previous day. Since the store according to FIG. 15 is a 24-hour store (a store that operates 24 hours), the air-conditioning time zone of the store by the operation of the air conditioner is 24 hours.
  • the air conditioning control device 13 includes the predicted heat load acquisition unit 136.
  • the predicted heat load acquisition unit 136 is connected to an external network such as the Internet or from a database that stores past weather information (for example, information for the past several years). Outdoor temperature, predicted outdoor humidity, weather forecast, etc.).
  • the predicted heat load acquisition unit 136 acquires the predicted indoor temperature and the predicted indoor humidity of the day from a database that stores them.
  • Calculation of the predicted heat load Q uses the calculation formula (1) of the predicted heat load Q described above.
  • the threshold value ⁇ is set to, for example, an outside air temperature of 30 ° C.
  • the start time of the dehumidifying operation is a time zone where the predicted outside air temperature is expected to be smaller than the threshold value ⁇ ( In FIG. 15, the earliest time (from 0:00 am to 9:00 am in FIG. 15) is set as the start time of the dehumidifying operation. In FIG. 15, midnight is the start time of the dehumidifying operation.
  • the end time of the dehumidifying operation is a time at which the predicted outside air temperature is expected to be equal to or higher than the threshold value ⁇ . In FIG. 15, 9 am is the end time. However, when the room temperature becomes equal to or higher than a set value (for example, 25 ° C. or higher) during the dehumidifying operation, the dehumidifying operation is stopped and the operation mode is changed to the cooling operation mode. In addition, when the predicted outside air temperature decreases after the evening, the second dehumidifying operation may be performed in one day. In FIG. 15, the dehumidifying operation is performed from 19:00 to 24:00. Referring to FIG.
  • all the time zones other than the dehumidifying operation are the cooling operation time zone in the air conditioning time zone of the store. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the store since the store is a 24-hour store, the store's air-conditioning time zone is from 0:00 to 24:00, but the store manager can set the actual business hours in advance.
  • the cooling operation (cooling operation) in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the air conditioner operation is started in the air conditioner control device for the store air conditioner that enables the timer operation to start the air conditioner operation at a predetermined operation start time and stop the air conditioner operation at the operation end time.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and between such an operation start time and the store opening time and / or from the store closing time to the operation end time.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is controlled by the inverter by the air conditioning control device 13, the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation. .
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do.
  • An eighth embodiment will be described based on FIG. A control method in the case of using the actually measured outside air temperature in a non-24-hour store will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation on the day is determined in real time on the day. Since the store according to FIG. 16 is a non-24-hour business store (a store that operates in a predetermined time zone of 24 hours), the air-conditioning time zone of the store due to the operation of the air conditioner is not 24 hours. In this case, the outside air temperature can be measured at the store. Referring to FIG.
  • the threshold value ⁇ is determined to be, for example, an outside air temperature of 30 ° C. If the temperature is lower than the threshold value ⁇ , the start time of the dehumidifying operation is set. In FIG. 16, 5:00 am is the start time of the dehumidifying operation. Further, the end time of the dehumidifying operation is the time when the outside air temperature becomes equal to or higher than the threshold value ⁇ , or the indoor temperature (store temperature) becomes equal to or higher than a set value (for example, 25 ° C. or higher) (9 o'clock in FIG. 16). ), Dehumidifying operation is stopped, and the operation mode is changed to cooling operation mode. Referring to FIG.
  • the time zone of the cooling operation in the air conditioning time zone of the store, all the time zones other than the dehumidifying operation are the cooling operation time zone. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the store's air conditioning time period is the store's preparation start time to clean-up end time, or the store's opening time to closing time, and is set in advance by the store manager It is time zone to do. In FIG. 16, it is from 5:00 am to 11:00 pm (5 pm to 23:00).
  • the cooling operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the air conditioner operation is started in the air conditioner control device for the store air conditioner that enables the timer operation to start the air conditioner operation at a predetermined operation start time and stop the air conditioner operation at the operation end time.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and the outside air temperature is a predetermined temperature (threshold ⁇ ) between the start time of the operation and the opening time of the store.
  • the engine is operated to blow out the designed cool air that is lower than the temperature of the cool air blown into the store during the cooling operation performed between the store opening time and the store closing time and designed with a small amount of air flow. It will be.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is controlled by the inverter by the air conditioning control device 13, the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation. .
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do.
  • a ninth embodiment will be described based on FIG. A control method in the case of using the actually measured outside air temperature in a 24-hour store will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation on the day is determined in real time on the day. Since the store according to FIG. 17 is a 24-hour store (a store that operates 24 hours), the air-conditioning time zone of the store by the operation of the air conditioner is 24 hours. In this case, the outside air temperature can be measured at the store. Referring to FIG.
  • the threshold value ⁇ is determined to be, for example, 30 ° C., and the start time of the dehumidifying operation is 24 hours in the air conditioning time zone of the store. If it is smaller than the threshold value ⁇ , the start time of the dehumidifying operation is set. In FIG. 17, midnight is the start time of the dehumidifying operation. Further, the end time of the dehumidifying operation is the time when the outside air temperature becomes equal to or higher than the threshold value ⁇ , or when the indoor temperature (store temperature) becomes equal to or higher than a set value (for example, 25 ° C. or higher) (9 o'clock in FIG. 17).
  • Dehumidifying operation is stopped, and the operation mode is changed to cooling operation mode.
  • the second dehumidifying operation may be performed in one day.
  • the dehumidifying operation is performed from 19:00 to 24:00.
  • the time zone of the cooling operation in the air conditioning time zone of the store, all the time zones other than the dehumidifying operation are the cooling operation time zone. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the store since the store is a 24-hour store, the store's air-conditioning time zone is from 0:00 to 24:00, but the store manager can set the actual business hours in advance.
  • the cooling operation (cooling operation) in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and between such an operation start time and the store opening time and / or from the store closing time to the operation end time. If the outside air temperature is lower than the predetermined temperature (threshold value ⁇ ) during this period, the temperature is lower than the temperature of the cool air blown into the store during the cooling operation performed between the store opening time and the store closing time.
  • the operation will be to blow out cold air designed with a small air volume into the store.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13.
  • the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do. [Tenth embodiment] Based on FIG.
  • a control method in the case of using the actually measured indoor temperature (in-store temperature) in a store whose business hours are not 24 hours will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation on the day is determined in real time on the day. Since the store according to FIG.
  • the air-conditioning time zone of the store due to the operation of the air conditioner is not 24 hours.
  • the store can measure the store temperature (store temperature).
  • the threshold value ⁇ is determined to be, for example, an in-store temperature of 25 ° C.
  • the start time of the dehumidifying operation is the in-store If the temperature is lower than the threshold value ⁇ , the start time of the dehumidifying operation is set. In FIG. 18, 5 am is the start time of the dehumidifying operation.
  • the dehumidifying operation ends at the time when the in-store temperature is equal to or higher than the threshold value ⁇ (9 o'clock in FIG. 18), and the dehumidifying operation is stopped and the cooling operation mode is entered.
  • the time zone of the cooling operation all the time zones other than the dehumidifying operation in the air conditioning time zone of the store are the cooling operation time zone. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the store's air conditioning time period is the store's preparation start time to clean-up end time, or the store's opening time to closing time, and is set in advance by the store manager It is time zone to do. In FIG. 18, it is from 5:00 am to 11:00 pm (5 pm to 23:00).
  • the cooling operation (cooling operation) in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the air conditioner operation is started in the air conditioner control device for the store air conditioner that enables the timer operation to start the air conditioner operation at a predetermined operation start time and stop the air conditioner operation at the operation end time.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and the store temperature is a predetermined temperature (threshold ⁇ ) between the start time of the operation and the opening time of the store.
  • the engine is operated to blow out the designed cool air that is lower than the temperature of the cool air blown into the store during the cooling operation performed between the store opening time and the store closing time and designed with a small amount of air flow. It will be.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is controlled by the inverter by the air conditioning control device 13, the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation. .
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do. [Eleventh embodiment] Based on FIG. 19, an eleventh embodiment will be described. A control method in the case of using the actually measured indoor temperature (in-store temperature) in a 24-hour store will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners.
  • the room means the inside of a store.
  • the schedule of the dehumidifying operation and the cooling operation on the day is determined in real time on the day. Since the store according to FIG. 19 is a 24-hour store (a store that operates 24 hours), the air-conditioning time zone of the store by the operation of the air conditioner is 24 hours. In this case, the store can measure the store temperature (store temperature). Referring to FIG.
  • the threshold value ⁇ is set to, for example, an in-store temperature of 25 ° C., and the start time of the dehumidifying operation is 24 hours in the air-conditioning time zone of the store. If it is smaller than the threshold value ⁇ , the start time of the dehumidifying operation is set. In FIG. 19, 0:00 am is the start time of the wet operation.
  • the dehumidifying operation ends at the time when the in-store temperature becomes equal to or higher than the threshold value ⁇ (9 o'clock in FIG. 19), the dehumidifying operation is stopped, and the cooling operation mode is entered.
  • the second dehumidifying operation may be performed in one day.
  • the dehumidifying operation is performed from 19:00 to 24:00.
  • the time zone of the cooling operation in the air conditioning time zone of the store, all the time zones other than the dehumidifying operation are the cooling operation time zone. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature / humidity sensor 113 as described above.
  • the store since the store is a 24-hour store, the store's air-conditioning time zone is from 0:00 to 24:00, but the store manager can set the actual business hours in advance.
  • the cooling operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the air conditioner operation is started in the air conditioner control device for the store air conditioner that enables the timer operation to start the air conditioner operation at a predetermined operation start time and stop the air conditioner operation at the operation end time.
  • the opening time of the store and the closing time of the store are set between the start time and the operation end time, and between such an operation start time and the store opening time and / or from the store closing time to the operation end time.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is controlled by the inverter by the air conditioning control device 13, the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation. .
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do. In the eleventh embodiment, the dehumidifying operation and the cooling operation are switched only by the measured in-store temperature (in-store temperature). As an alternative method, the difference between the in-store temperature and the set temperature of the air conditioner is used.
  • a time zone equal to or less than the threshold value ⁇ (in this case, a value other than 25 ° C.) may be used as the dehumidifying operation time zone.
  • ⁇ in this case, a value other than 25 ° C.
  • a twelfth embodiment will be described based on FIGS. 20 to 22.
  • a control method in the case of using the actually measured outside air temperature and outside air humidity in a store that is not open for 24 hours will be described.
  • This store has frozen showcases and refrigerated showcases (hereinafter referred to as frozen / refrigerated showcases) for storing foods in stores such as supermarkets and convenience stores, and the stores are cooled by air conditioners. Is.
  • the room means the inside of a store.
  • the dehumidifying operation and cooling operation schedule for the day is determined in real time on the day in consideration of the outside air temperature and the outside air humidity.
  • the dehumidifying operation is performed because the inside humidity becomes high.
  • FIG. 20 is a graph when the dehumidifying operation and the cooling operation are performed in the relationship between the dehumidifying time zone and the cooling time zone and the outside air temperature and the outside air humidity.
  • FIG. 21 is a graph in the case where only the dehumidifying operation is performed in the relationship between the dehumidifying time zone and the cooling time zone, the outside air temperature, and the outside air humidity.
  • the dehumidifying operation is performed.
  • the dehumidifying operation when the outside air humidity is smaller than the threshold value ⁇ , the dehumidifying operation is not performed. Further, during the dehumidifying operation, when the room temperature (in-store temperature) becomes equal to or higher than a set value (for example, 25 ° C. or higher), the dehumidifying operation is stopped and the operation mode is changed to the cooling operation mode. Regarding the time zone of the cooling operation, when the outside air temperature is equal to or higher than the threshold value ⁇ , the operation mode is shifted to the cooling operation mode regardless of the outside air humidity.
  • the cooling operation mode is set.
  • the room temperature (in-store temperature) is also likely to be low. Therefore, if the room temperature (in-store temperature) becomes lower than a set value (for example, 25 ° C. or less) by cooling operation, The cooling operation is stopped by the unit 134. Whether or not the cooling operation is actually performed depends on the room temperature and the air conditioning set temperature by the air conditioning control device 13 while receiving the detection of the temperature and humidity sensor 113 as described in the first embodiment.
  • the air-conditioning time zone of a store is a store opening start time to a clean-up end time or a store opening time to a closing time because the store is a non-24-hour store, a time zone set in advance by the store manager It is. As shown in FIG. 20 to FIG. 22, it is from 5:00 am to 11:00 pm (5 to 23:00).
  • the cooling operation (cooling operation) in this case is the same as that described in the first embodiment, and the control unit 134 starts the air conditioning operation at a predetermined operation start time and performs the air conditioning operation at the operation end time.
  • the indoor unit 11 and the outdoor unit 12 are caused to perform a cooling operation (also referred to as a cooling operation) in the cooling time period set by the time period setting unit 133.
  • the control unit 134 increases the low pressure of the compressor 123 to the first pressure at the cooling start time, and increases the indoor temperature T i And set temperature T S
  • the air volume of the fan 112 is controlled to the first air volume according to the temperature difference
  • the set temperature for the cooling operation can be arbitrarily set.
  • the dehumidifying operation in this case is the same as that described in the first embodiment, and the control unit 134 starts the dehumidifying operation at a predetermined operation start time and stops the dehumidifying operation at the operation end time.
  • the dehumidifying operation is executed by the indoor unit 11 and the outdoor unit 12 in the dehumidifying time zone set by the time zone setting unit 133.
  • the control unit 134 sets the low pressure of the compressor 123 to a second pressure lower than the first pressure during the cooling operation, and controls the air volume of the fan 112 to the second air volume. To do.
  • the second air volume during the dehumidifying operation is smaller than the average value of the first air volume during the cooling operation.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is controlled by the inverter by the air conditioning control device 13, the operation of the compressor 123 and the fan 112 can be in a state of low speed operation at the lowest frequency in the dehumidifying operation. .
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13. If the operation of 123 and the fan 112 is a control that is switched stepwise by the air-conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in a minimum cooling state that is “weakly cold”. can do.
  • a thirteenth embodiment will be described based on FIG. In the sixth embodiment (shown in FIG. 14) to the twelfth embodiment (shown in FIGS.
  • the end time of the dehumidifying operation is set, and the temperature and / or humidity inside the store and / or outside the store have the threshold values.
  • the end time of the dehumidifying operation is determined by determining the rate of rise of the in-store temperature.
  • the determination unit provided in the air-conditioning control device 13 that the rising speed of the in-store temperature detected by the temperature / humidity sensor 113 is larger than a predetermined value.
  • control is performed such that the dehumidifying operation is stopped and the cooling operation mode is shifted to.
  • the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13 as described in the sixth embodiment.
  • the operation of the compressor 123 and the fan 112 is a mechanism that is inverter-controlled by the air conditioning control device 13, in the dehumidifying operation, the operation of the compressor 123 and the fan 112 may be in a state of low speed operation at the lowest frequency. it can. Further, in this case, the cooling operation (cooling operation) is controlled according to the relationship between the room temperature detected by the temperature / humidity sensor 113 and the air conditioning set temperature set in the air conditioning controller 13 as described in the sixth embodiment. If the operation of the compressor 123 and the fan 112 is a control that is switched stepwise by the air conditioning control device 13, in the dehumidifying operation, the compressor 123 and the fan 112 are operated in the lowest cooling state that is “weakly cooled”. It can be.
  • FIG. 24 is a graph showing the relationship between the dehumidifying time zone and the cooling time zone and the in-store temperature according to the fourteenth embodiment of the present invention
  • FIG. 25 is an enlarged view inside the dotted ellipse of FIG.
  • the low pressure of the compressor is set to the first pressure in the cooling operation (cooling operation), and the air flow rate of the fan 112 is set.
  • the dehumidifying operation as a method of lowering the evaporation temperature of the refrigerant, a second pressure lower than the first pressure is set, and at the same time, the blown amount of the fan 112 is smaller than the first blown amount.
  • the 14th embodiment is the second air flow rate
  • the air flow rate of the fan 112 is In the cooling operation (cooling operation), the control is simplified by controlling the first air flow rate with a large air flow rate and the dehumidifying operation with the second air flow rate smaller than the first air flow rate.
  • an open showcase 200 that is one of the showcases 22 forms a product storage chamber 202 having a front opening formed by a heat insulating wall 201, and a partition plate 203 at the back of the product storage chamber 202.
  • a partitioned cool air passage 204 and a protective air passage 206 partitioned by a partition plate 205 are formed.
  • a cooler 207 and a cool air circulation fan 208 constituting the refrigerator 21 are disposed in the cool air passage 204, and a fan 209 is disposed in the protective air passage 206.
  • a compressor 210 that compresses refrigerant, a condenser 211 that condenses the refrigerant, a decompressor 212 such as an expansion valve, and a cooler 207 that evaporates the refrigerant are sequentially connected by a refrigerant pipe.
  • a refrigerant circulation circuit is configured.
  • the condenser 211 is provided with a fan 213 to improve the refrigerant condensing action.
  • a method of providing such a refrigerator 21 for each open showcase 200 (this is referred to as a built-in type).
  • a common compressor 210 and condenser 211 installed outside the store are provided (this is referred to as a condensing unit), and a decompressor 212 and a cooler 207 provided for each open showcase 200 are respectively provided for this condensing unit.
  • refrigerant pipes this is referred to as a separate system
  • FIG. 13 shows the latter system, and each open showcase 200 is cooled by any of these systems.
  • the refrigerant compressed by the compressor 210 is condensed by the condenser 211, decompressed by the decompressor 212, and evaporated by the cooler 207. Then, the cold air cooled by the cooler 207 by the operation of the fan 208 passes through the cold air passage 204 from the blowout port 214 at the upper front of the product storage chamber 202 toward the suction port 215 at the lower front of the product storage chamber 202.
  • the cool air curtain 216 is formed in the front opening of the product storage chamber 202 by being blown out.
  • the operation of the fan 208 causes the air in the protective air passage 206 to be blown out from the blowout port 217 at the top front of the product storage chamber 202 toward the suction port 218 at the bottom front of the product storage chamber 202, thereby cooling the air curtain.
  • a protective air curtain 219 is formed outside 216.
  • the food is cooled to a refrigeration temperature if the open showcase 200 is a refrigerated open showcase, and is cooled to a refrigeration temperature if the open showcase 200 is a refrigerated open showcase.
  • the open showcase 200 is provided with a night cover 221 for selectively covering the front opening of the product storage chamber 202.
  • the night cover 221 is supported so as to be automatically wound around the upper part 222, and is wound up to the upper part during the business hours of the store 10 (from opening until closing). 13 (from closing to opening), the front opening of the product storage chamber 202 is covered by being pulled out and locked to the lower locking portion 223 as shown in FIG.
  • the operation of the refrigerator 21 is set to the energy saving operation mode so that the temperature of the product storage room 202 is within an allowable temperature range higher than the temperature in the business hours.
  • the temperature rise in the storage chamber 202 as shown in FIG. 13, by pulling out the night cover 221 and covering the front opening of the product storage chamber 202, the cold air leakage in the product storage chamber 202 can be reduced. An increase in temperature of the storage chamber 202 can be suppressed. For this reason, the operating efficiency of the refrigerator 21 in the energy saving operation mode is improved.
  • FIG. 13 in the non-business hours of the store 10 (from closing until opening) as shown in the sixth embodiment, the eighth embodiment, and / or the tenth to thirteenth embodiments.
  • the front opening of the product storage chamber 202 is covered by the night cover 221.
  • the fan 112 is operated by the air conditioning control device 13 during the first half of the time period in the dehumidifying operation performed during the non-business hours of the store 10 (from closing until opening).
  • the timer control is performed so that the operation is performed with the first air flow rate with a large air flow rate, and the operation with the second air flow rate smaller than the first air flow rate in the latter half of the time period. That is, in a store with a non-24-hour business hours as shown in the sixth embodiment, the eighth embodiment, and / or the tenth to thirteenth embodiments, the night cover 221 is displayed until the showcase preparation start time.
  • the front opening of the product storage chamber 202 is covered.
  • the fan 112 when performing dehumidifying operation in a time zone where the in-store humidity is high, such as until the night cover 221 of the open showcase 200 is opened, in the first time zone
  • the fan 112 is operated at the first air flow rate with a large air flow rate so that the dehumidification amount is increased.
  • the absolute humidity difference between the air cooled by the air conditioner heat exchanger 111 and blown out to the store 10 by the fan 112 and the air sucked into the air conditioner heat exchanger 111 by the fan 112 may be small.
  • the amount of air blown by the fan 112 is large, the amount of dehumidification increases.
  • the open showcase 200 a part of the in-store air is sucked into the cooler 207 from the front opening of the open showcase 200 by the operation of the cool air circulation fan 208. For this reason, when the humidity of store air is high, the amount of frost formation on the cooler 207 increases, resulting in a decrease in the cooling effect in the open showcase 200, and the slow frost process increases, so-called open showcase 200 The heat load increases. However, while the night cover 221 is closed, the in-store air is suppressed from being sucked into the cooler 207 and the amount of frost formation on the cooler 207 is also suppressed, so that the night cover 221 is closed as described above. By performing the dehumidifying operation during this time, the heat load of the open showcase 200 can be reduced.
  • the dehumidification is performed in the second half time zone by an operation in which the second blower amount is smaller than the first blower amount.
  • the fan 112 is sent so that the dehumidifying amount increases in the first half time zone by the operation control of the fan 112 as described above.
  • the timer control is performed so that the operation is performed with the first air flow rate with a large air flow rate, and the operation with the second air flow rate less than the first air flow rate in the second half time zone.
  • the night cover 221 is kept open in the store with the business hours of the store 10 for 24 hours.
  • the operation of the fan 112 is controlled by the two-stage control of the first air volume and the second air volume, thereby dehumidifying. Operation can be performed effectively, and control can be simplified.
  • the air-conditioning control apparatus according to the present invention is not limited to the configuration shown in the above-described embodiment, but can be applied to various forms, and includes various forms within the technical scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention porte sur un appareil de commande de conditionnement d'air, sur un système de refroidissement et sur un programme de commande de conditionnement d'air qui permettent la réduction d'une consommation d'électricité par un conditionneur d'air pour refroidir une pièce. Avant l'accomplissement d'une opération de refroidissement pour refroidir une pièce équipée d'une machine intérieure (11), l'appareil de commande de conditionnement d'air (13) effectue un traitement de déshumidification pour éliminer l'humidité de la pièce.
PCT/JP2009/071856 2008-12-25 2009-12-24 Appareil de commande de conditionnement d'air, système de refroidissement et programme de commande de conditionnement d'air WO2010074316A1 (fr)

Priority Applications (2)

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CN200980152478.3A CN102272533B (zh) 2008-12-25 2009-12-24 空调控制装置、冷却系统以及空调控制程序
US13/140,594 US20120042672A1 (en) 2008-12-25 2009-12-24 Air conditioner control apparatus, cooling system, and air conditioner control program

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JP2008330517 2008-12-25
JP2008-330517 2008-12-25
JP2009-289360 2009-12-21
JP2009289360A JP5362537B2 (ja) 2008-12-25 2009-12-21 空調制御装置、冷却システム及び空調制御プログラム

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