WO2020003404A1 - Système de climatisation et entrepôt - Google Patents

Système de climatisation et entrepôt Download PDF

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Publication number
WO2020003404A1
WO2020003404A1 PCT/JP2018/024367 JP2018024367W WO2020003404A1 WO 2020003404 A1 WO2020003404 A1 WO 2020003404A1 JP 2018024367 W JP2018024367 W JP 2018024367W WO 2020003404 A1 WO2020003404 A1 WO 2020003404A1
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WIPO (PCT)
Prior art keywords
storage
air
temperature
room
unit
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Application number
PCT/JP2018/024367
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English (en)
Japanese (ja)
Inventor
英希 大野
圭吾 岡島
肇 藤本
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020526775A priority Critical patent/JP7112026B2/ja
Priority to PCT/JP2018/024367 priority patent/WO2020003404A1/fr
Publication of WO2020003404A1 publication Critical patent/WO2020003404A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost

Definitions

  • the present invention relates to an air conditioning system and a warehouse having a plurality of load-side units.
  • Patent Literature 1 a refrigeration system that keeps the temperature of a refrigeration compartment uniform has been proposed (for example, see Patent Document 1).
  • the refrigeration system disclosed in Patent Literature 1 includes a plurality of temperature sensors for measuring the temperature in the refrigerator compartment and a blower, and in the refrigerator compartment, from a relatively low temperature region to a relatively high temperature region. Control the blower to send air.
  • the present invention has been made to solve the above-described problems, and provides an air conditioning system and a warehouse that reduce the load on air conditioning.
  • the air-conditioning system includes a storage room for storing a storage object, a first load-side unit that air-conditions to a first temperature, and a front room including a space around the storage room, the first room including the first room.
  • a second load-side unit that is air-conditioned to a second temperature that is farther from the storage temperature of the storage item than the temperature of the storage object.
  • a warehouse includes a storage room for storing storage items, a front room including a space around the storage room, and a first load-side unit that air-conditions the storage room to a first temperature.
  • a second load-side unit that air-conditions the front chamber to a second temperature that is farther from the storage temperature of the storage item than the first temperature.
  • the storage room is set at the first temperature
  • the front room is set at the second temperature farther from the storage temperature of the storage item than the first temperature, so that a space with strict temperature control can be provided. It can be narrowed down to a space smaller than the entire warehouse. As a result, the load on air conditioning is reduced.
  • FIG. 1 is an external perspective view illustrating a configuration example of an air conditioning system according to Embodiment 1 of the present invention.
  • FIG. 2 is a refrigerant circuit diagram of the air-conditioning system shown in FIG. 1.
  • FIG. 2 is a top view of the storage room shown in FIG. 1. It is a front view of the storage room shown in FIG. It is a side view of the storage room shown in FIG.
  • FIG. 4 is an external perspective view illustrating a configuration example of a storage unit illustrated in FIG. 3.
  • FIG. 3 is a block diagram illustrating a configuration example of a control section illustrated in FIG. 2.
  • 2 is a flowchart showing an air conditioning control procedure executed by the air conditioning system shown in FIG. 1.
  • FIG. 3 is a refrigerant circuit diagram illustrating another configuration example of the air-conditioning system according to Embodiment 1 of the present invention. It is a figure showing an example of 1 composition of an air conditioning system concerning Embodiment 2 of the present invention.
  • FIG. 12 is a block diagram illustrating a configuration example of a control section of the air-conditioning apparatus illustrated in FIG. 11.
  • FIG. 12 is a diagram illustrating a configuration example of a management terminal illustrated in FIG. 11.
  • FIG. 14 is a diagram illustrating an example of a management table stored in a storage unit illustrated in FIG. 13.
  • FIG. 13 is a refrigerant circuit diagram illustrating another configuration example of the air-conditioning system according to Embodiment 1 of the present invention. It is a figure showing an example of 1 composition of an air conditioning system concerning Embodiment 2 of the present invention.
  • FIG. 12 is a block diagram illustrating a configuration example of a control section of the air-conditioning apparatus illustrated in FIG. 11.
  • FIG. 12 is
  • FIG. 12 is a sequence diagram illustrating an operation procedure of the air conditioning system illustrated in FIG. 11. It is the figure which showed typically the operation
  • FIG. 18 is a diagram schematically illustrating an operation procedure of the air-conditioning system illustrated in FIG. 17.
  • FIG. 1 is an external perspective view illustrating one configuration example of the air-conditioning system according to Embodiment 1 of the present invention.
  • the air conditioning system 1 performs air conditioning of a warehouse 2 having a storage room 30 for storing storage items and a front room 40 including a space around the storage room 30.
  • the storage object is an object to be cooled.
  • the front room 40 is a space through which an operator who puts or takes out a storage item in the storage room 30 passes.
  • a moving object including an automatic transport robot that transports a stored item may travel in the front room 40.
  • FIG. 1 illustrates a case where the storage room 30 is a rectangular parallelepiped box, but the outer shape of the storage room 30 is not limited to a rectangular parallelepiped shape.
  • the air-conditioning system 1 includes a first load-side unit 10 that air-conditions a storage room 30, second load-side units 11a and 11b that air-conditions a front room 40, and a heat source-side unit. 20.
  • the first load-side unit 10 and the second load-side units 11a and 11b are connected to the heat source-side unit 20 by refrigerant piping, but the illustration of the refrigerant piping is omitted.
  • the front room 40 is provided with a front room environment detection sensor 41 for detecting the temperature of the air in the front room 40.
  • the first load-side unit 10 is attached to the wall of the storage room 30.
  • the second load units 11a and 11b are mounted on the wall of the front room 40.
  • FIG. 2 is a refrigerant circuit diagram of the air conditioning system shown in FIG. As shown in FIG. 2, the first load-side unit 10 and the second load-side units 11a and 11b are connected in parallel to the heat source-side unit 20 via a refrigerant pipe.
  • the heat source side unit 20 includes a compressor 21, a heat source side heat exchanger 22, a bypass valve 23, and a control unit 50.
  • the first load-side unit 10 includes an expansion device 12, a load-side heat exchanger 13, a fan 14, a first on-off valve 15, and a second on-off valve 16.
  • the second load-side unit 11a has an expansion device 12a, a load-side heat exchanger 13a, a fan 14a, a first on-off valve 15a, and a second on-off valve 16a.
  • the second load-side unit 11b has an expansion device 12b, a load-side heat exchanger 13b, a fan 14b, a first on-off valve 15b, and a second on-off valve 16b.
  • the compressor 21, the heat source side heat exchanger 22, the expansion devices 12, 12a and 12b, and the load side heat exchangers 13, 13a and 13b are connected by refrigerant pipes, and a refrigerant circuit 60 in which refrigerant circulates is configured.
  • the air conditioning system 1 is provided with a bypass circuit 65 in which the bypass valve 23 and the second on-off valves 16, 16a and 16 are connected by refrigerant piping.
  • the bypass circuit 65 is connected to the refrigerant inlets of the load-side heat exchangers 13, 13a and 13b and the refrigerant outlet of the compressor 21.
  • the bypass circuit 65 allows the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 to flow through the heat exchanger to be defrosted among the load-side heat exchangers 13, 13a, and 13b.
  • the compressor 21 compresses and discharges the refrigerant circulating in the refrigerant circuit 60.
  • the compressor 21 is a compressor such as a rotary compressor, a scroll compressor, a screw compressor, and a reciprocating compressor.
  • the heat source side heat exchanger 22 is a heat exchanger that functions as a condenser.
  • the bypass valve 23 is an on-off valve that switches from the closed state to the open state during the defrosting operation and allows the high-temperature and high-pressure refrigerant discharged from the compressor 21 to flow through the bypass circuit 65.
  • the expansion device 12 expands and reduces the pressure of the refrigerant flowing from the heat source side heat exchanger 22.
  • the expansion device 12 is, for example, an electric expansion valve that can adjust the flow rate of the refrigerant.
  • the load side heat exchanger 13 is a heat exchanger that functions as an evaporator.
  • the load-side heat exchanger 13 is, for example, a fin-and-tube heat exchanger.
  • the fan 14 draws air from the front chamber 40 and sends it to the load-side heat exchanger 13 to supply the heat-exchanged air to the storage room.
  • the fan 14 is, for example, a fan such as a propeller fan and a sirocco fan.
  • the first on-off valve 15 is a two-way valve that is opened during the cooling operation.
  • the second on-off valve 16 is a two-way valve that is opened when the load-side heat exchanger 13 is defrosted. Since the second load-side units 11a and 11b have the same configuration as the first load-side unit 10, detailed description thereof will be omitted.
  • the first on-off valves 15, 15a and 15b, the second on-off valves 16, 16a and 16b, and the bypass valve 23 are flow paths for switching the flow path of the refrigerant according to the operation mode of the cooling operation and the defrosting operation.
  • the switching device 17 is configured.
  • the first on-off valves 15, 15a and 15b are all in the open state.
  • the refrigerant exchanges heat with air in the heat source side heat exchanger 22 and radiates heat to be condensed.
  • the condensed and liquefied refrigerant flows into the expansion devices 12, 12a, and 12b via the refrigerant pipe.
  • the expansion devices 12, 12a and 12b the liquid refrigerant is decompressed and expanded.
  • the liquid refrigerant flows into the load-side heat exchangers 13, 13a and 13b, it exchanges heat with the air in the storage room 30 and the front room 40 and absorbs heat from the air. Thereby, the air in the storage room 30 and the front room 40 is cooled.
  • the refrigerant that has absorbed heat evaporates to a gas.
  • the vaporized refrigerant returns to the compressor 21 of the heat source side unit via the refrigerant pipe.
  • FIG. 3 is a top view of the storage room shown in FIG.
  • FIG. 4 is a front view of the storage room shown in FIG.
  • FIG. 5 is a side view of the storage room shown in FIG.
  • the ceiling, floor and walls of the storage room 30 are constituted by heat insulating walls.
  • the storage room 30 has a plurality of storage sections 31 for storing stored items.
  • the storage room 30 can store a number of storage items corresponding to the number of the storage units 31.
  • the first load-side unit 10 is provided above the plurality of storage sections 31.
  • the identifier of each storage section 31 is represented by three-dimensional coordinates using three axes of X, Y and Z axes shown in the figure.
  • the positions of the storage units 31 are represented by coordinates (x1, y1, z1) to (x2, y4, z3).
  • two storage groups 32 each including twelve storage sections 31 having the same x-axis coordinate are arranged with the conditioned air supply passage 33 interposed therebetween.
  • one storage group 32 four storage units 31 are arranged in the longitudinal direction of the horizontal plane of the storage room 30 (the direction of the Y-axis).
  • one storage group 32 is provided with three storage units 31 in the vertical direction (Z-axis arrow direction).
  • One storage group 32 includes 12 storage units 31.
  • the arrow shown in FIG. 3 indicates the direction in which air flows.
  • the first load-side unit 10 transfers the air sucked from the front chamber 40 shown in FIG. 1 to the storage room 30 via the load-side heat exchanger 13 shown in FIG. The air is sent to the conditioned air supply path 33.
  • FIG. 6 is an external perspective view showing an example of the configuration of the storage section shown in FIG.
  • the storage section 31 is a section in which the storage room 30 is partitioned by a partition wall 34, and is a box having a storage space in which storage items are stored.
  • the storage unit 31 includes an intake unit 135 that takes in the air in the storage room 30 into the storage space, a discharge unit 137 that discharges the air in the storage space to the front room 40, a private room environment detection sensor 36 that detects the temperature of the storage space, and Having.
  • the intake means 135 has a supply port 35 provided in the partition wall 34 facing the storage room 30 and a damper device 38 a for adjusting the opening of the supply port 35.
  • the discharge means 137 has a discharge port 37 provided in the partition wall 34 facing the front chamber 40, and a damper device 38b for adjusting the opening of the discharge port 37.
  • the damper devices 38a and 38b are, for example, devices provided with baffles that can adjust the degree of opening of an opening through which air flows. Since the partition wall 34 is made of a heat insulating material, the temperature of the storage space can be changed by switching the open / close state of the damper devices 38a and 38b of each storage unit 31.
  • the damper devices 38a and 38b of the storage unit 31 are opened. In this case, cool air can be introduced from the storage room 30 into the storage space. When no storage object is stored in the storage space, the damper devices 38a and 38b of the storage unit 31 are closed. In this case, the inflow of cool air from the first load-side unit 10 to the storage section 31 in which the storage items are not stored is suppressed. As a result, the cooling efficiency of the stored items stored in the storage unit 31 is improved. Furthermore, even if there is a storage object in the storage unit 31, when the temperature of the storage space of the storage unit 31 reaches the set temperature, the damper devices 38a and 38b may be closed.
  • the temperature of the storage space is maintained at a low temperature. Thereafter, when the temperature of the storage space of the storage section 31 becomes higher than the set temperature, the air can be taken into the storage space by switching the damper devices 38a and 38b from the closed state to the open state.
  • the temperature of the storage space can be finely adjusted for each storage unit 31. Therefore, the storage temperature most suitable for the storage items stored in the storage unit 31 may be different for each storage item.
  • a temperature range suitable for storage for each storage item based on the storage temperature is referred to as a storage temperature range.
  • FIG. 7 is a block diagram illustrating a configuration example of the control unit illustrated in FIG.
  • the control unit 50 is, for example, a microcomputer.
  • the control unit 50 includes a memory 51 that stores a program, and a CPU (Central Processing Unit) 52 that executes processing according to the program.
  • the control unit 50 includes a communication unit 53 and a refrigeration cycle control unit 54.
  • the communication unit 53 and the refrigeration cycle control unit 54 are configured in the air conditioning system 1.
  • the communication unit 53 acquires detection values from the front room environment detection sensor 41 and all the private room environment detection sensors 36.
  • the communication unit 53 notifies the refrigeration cycle control unit 54 of the detection value of the front room environment detection sensor 41 as the front room temperature.
  • the communication unit 53 determines the storage room temperature using at least one of the acquired detection values and notifies the refrigeration cycle control unit 54 of the temperature. I do.
  • the communication unit 53 may determine the detection value of one of the single room environment detection sensors 36 among all the single room environment detection sensors 36 as the storage room temperature, or may set the average value of two or more detection values as the storage room temperature. Good.
  • the communication unit 53 performs the operation of the single room environment detection sensor 36 indicating the average temperature.
  • the detected value may be determined as the storage room temperature.
  • the communication unit 53 may use the detection value of the private room environment detection sensor 36 of the storage unit 31 at the determined coordinates as the storage room temperature.
  • the storage unit 31 located at the coordinates (x2, y4, z3) has the longest distance in the Y-axis direction from the first load-side unit 10 and is located at the uppermost level. It is considered that the temperature is highest in the chamber 30.
  • the temperature of the storage section 31 becomes equal to or lower than the storage room set temperature HTs.
  • the storage room set temperature HTs is a target temperature of the storage room 30.
  • the storage room set temperature HTs is set to, for example, the lowest storage temperature among the storage temperatures of the storage items stored in the plurality of storage units 31 of the storage room 30.
  • the refrigeration cycle control unit 54 controls the refrigeration cycle of the refrigerant circulating in the refrigerant circuit 60 based on the pre-chamber temperature and the storage room temperature notified from the communication unit 53. Specifically, the refrigerating cycle control means 54 operates the compressor so that the storage room temperature matches the storage room set temperature HTs in a certain range, and the front room temperature matches the front room set temperature ZTs in a certain range. The number of rotations of 21 and the degree of opening of the expansion devices 12, 12a and 12b are controlled.
  • the anterior chamber set temperature ZTs is a target temperature of the anterior chamber 40.
  • the relationship of the air temperature in the air conditioning performed by the air conditioning system 1 of the first embodiment will be described.
  • the set temperature of the outlet temperature of the first load-side unit 10 is set to T10set
  • the set temperature of the outlet temperature of the second load-side units 11a and 11b is set to T11set.
  • the relationship of the air temperature is set temperature T10set ⁇ storage room set temperature HTs ⁇ set temperature T11set ⁇ front room set temperature ZTs ⁇ outside air temperature.
  • the storage temperature of the storage object becomes equal to the storage room set temperature HTs within a certain range.
  • the storage room set temperature HTs is ⁇ 25 ° C.
  • the anterior chamber set temperature ZTs is 0 ° C.
  • the second temperature is higher than the first temperature because of the above-mentioned air temperature.
  • FIG. 8 is a flowchart illustrating an air conditioning control procedure executed by the air conditioning system illustrated in FIG. 1.
  • the refrigeration cycle control means 54 uses the storage room temperature HT obtained from one of the plurality of private room environment detection sensors 36 as the storage room temperature HT.
  • the anterior chamber temperature is represented as ZT.
  • the communication unit 53 acquires the front room temperature ZT from the front room environment detection sensor 41 (step S101), the communication unit 53 notifies the refrigeration cycle control unit 54 of the front room temperature ZT.
  • the communication unit 53 notifies the refrigeration cycle control unit 54 of one of the detected values as the storage room temperature HT.
  • the refrigeration cycle control means 54 determines whether or not the anterior chamber temperature ZT matches the anterior chamber set temperature ZTs within a certain range. Further, the refrigeration cycle control means 54 determines whether or not the storage room temperature HT matches the storage room set temperature HTs within a certain range.
  • step S103 if the anterior chamber temperature ZT matches the anterior chamber set temperature ZTs in a certain range and the storage room temperature HT matches the storage room set temperature HTs in a certain range, the refrigeration cycle control unit 54 The process returns to step S101.
  • the refrigeration cycle control is performed. Means 54 controls the refrigeration cycle. Specifically, the refrigeration cycle control unit 54 adjusts the rotation speed of the compressor 21 and the opening degrees of the expansion devices 12, 12a, and 12b (step S104).
  • step S103 the anterior chamber temperature ZT does not match the anterior chamber set temperature ZTs in a certain range, but the storage room temperature HT matches the storage room set temperature HTs in a certain range (step S105). Yes), the refrigeration cycle control means 54 proceeds to step S106.
  • step S106 the refrigeration cycle control means 54 adjusts the opening degree of the expansion devices 12a and 12b (step S106).
  • the refrigeration cycle control means 54 proceeds to step S107.
  • step S107 the refrigeration cycle control means 54 adjusts the opening of the expansion device 12 (step S107).
  • the anterior chamber temperature is maintained at 0 ° C.
  • the storage room temperature is maintained at ⁇ 25 ° C., which is lower than the anterior chamber temperature.
  • the layer in the air state outside the warehouse is the first layer
  • the layer in the air state in the front room 40 is the second layer
  • the air state in the air-conditioned air supply passage 33 in the storage room 30 is the third layer
  • the air in the storage unit 31 is The state is referred to as a fourth layer.
  • the third and fourth layers are set to a severe temperature environment
  • the second layer is set to a lower temperature environment than the third and fourth layers. Therefore, it is possible to narrow the space where temperature control is strict to a space smaller than the entire warehouse.
  • the first load-side unit 10 takes in air from the front room 40, radiates heat of the storage room 30 to the front room 40, and the second load-side units 11a and 11b air-condition the front room 40. I have.
  • the load on the first load-side unit 10 is reduced as compared with the case where the outside air is taken in.
  • the communication unit 53 determines the storage room temperature HT after the acquisition of the anterior room temperature ZT, but whichever is earlier. Further, the refrigeration cycle control means 54 controls the expansion devices 12a and 12b in step S106 and controls the expansion device 12 in step S107. In these steps, too, the control of the compressor 21 is performed similarly to step S104. May go.
  • the refrigeration cycle control unit 54 switches the rotation direction of the fan 14 so that air is sucked from the storage room 30 and sent out to the front room 40. Subsequently, the refrigeration cycle control unit 54 closes the first on-off valve 15. Further, the refrigeration cycle control means 54 opens the bypass valve 23 and opens the second on-off valve 16. Thereby, the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 flows into the load-side heat exchanger 13 via the bypass circuit 65. Further, since the fan 14 sucks air from the storage room 30 and sends it out to the front room 40, heat generated from the load side heat exchanger 13 is conducted from the storage room 30 to the front room 40.
  • the supply port 35 and the discharge port 37 of the storage unit 31 in which the storage items are stored may be closed. In this case, it is possible to suppress an increase in the temperature of the storage item.
  • the refrigeration cycle control means 54 closes the bypass valve 23 and closes the second on-off valve 16. Thereafter, the refrigeration cycle control means 54 opens the first on-off valve 15. Further, the rotation direction of the fan 14 is switched so that air is sucked from the front chamber 40 and sent out to the storage chamber 30.
  • the first load side unit 10 may supply the storage room 30 with the air that has taken in the air in the front room 40 and exchanged heat.
  • the air flow changes from the front room 40 to the storage room 30 to the front room 40.
  • the refrigerant exchanges heat with the air near the storage temperature in the load-side heat exchanger 13, so that energy can be saved.
  • the air inside the storage room 30 can be purified.
  • FIG. 1 shows a configuration in which one storage room 30 is provided in the front room 40
  • the number of storage rooms 30 installed in the front room 40 is not limited to one, and a plurality of storage rooms 30 may be provided.
  • FIG. 9 is an external perspective view showing another configuration example of the warehouse to which the air conditioning system according to Embodiment 1 of the present invention is applied.
  • the air conditioning system 1a shown in FIG. 9 is applied to a warehouse 2a having two storage rooms 30a and 30b.
  • the air conditioning system 1a has first load-side units 10a and 10b and second load-side units 11a and 11b.
  • the first load side unit 10a is attached to the storage room 30a
  • the first load side unit 10b is attached to the storage room 30b.
  • the air conditioning system 1a can maintain the storage temperature of the storage room 30a different from the storage temperature of the storage room 30b.
  • FIG. 10 is a refrigerant circuit diagram illustrating another configuration example of the air-conditioning system according to Embodiment 1 of the present invention.
  • the air-conditioning system 1b has heat source side units 20a and 20b in addition to the heat source side unit 20.
  • the heat source side unit 20a has a compressor 21a, a heat source side heat exchanger 22a, and a bypass valve 23a.
  • the heat source side unit 20b has a compressor 21b, a heat source side heat exchanger 22b, and a bypass valve 23b.
  • the compressor 21a, the heat source side heat exchanger 22a, the expansion device 12a, and the load side heat exchanger 13a are connected by a refrigerant pipe, and a refrigerant circuit 60a in which the refrigerant circulates is configured.
  • the compressor 21b, the heat source side heat exchanger 22b, the expansion device 12b, and the load side heat exchanger 13b are connected by a refrigerant pipe, and a refrigerant circuit 60b in which the refrigerant circulates is configured.
  • the control unit 50 may be provided at any place in the air conditioning system 1b as long as the control unit 50 is connected to each of the refrigerant devices of the refrigerant circuits 60, 60a, and 60b and can control the refrigeration cycle.
  • the number of the first load-side units is one and the number of the second load-side units is two has been described, but the number of these load-side units is not limited.
  • the number of the second load-side units may be one.
  • the case of temperature management has been described.
  • the humidity may be managed such that the private room environment detection sensor 36 detects not only the temperature but also the humidity.
  • the air-conditioning system 1 sets the first load-side unit 10 that air-conditions the storage room 30 to the first temperature and the front room 40 from the storage temperature of the storage item more than the first temperature. And second load-side units 11a and 11b that are air-conditioned to a remote second temperature.
  • the temperature of the storage room 30 is set to the first temperature
  • the temperature of the front room 40 is set to the second temperature farther from the storage temperature of the storage item than the first temperature.
  • Spaces that are tightly controlled can be reduced to spaces smaller than the entire warehouse. Therefore, the load of air conditioning is reduced, the power consumption of the air conditioning system 1 is reduced, and energy saving can be achieved.
  • temperature variations in the space where the storage items are stored are suppressed, and the storage environment is improved.
  • the initial cost can be reduced by reducing the horsepower of the compressor 21 by reducing the load on the air-conditioning system 1 as compared with the related art.
  • the temperature management of the front room 40 is less strict than that of the storage room 30, the temperature environment is not severe, and the work of the worker and the moving body is easy in the front room 40. .
  • the warehouse 2 is a freezer, the worker and the moving body can work in a temperature environment that is not colder than the storage room 30.
  • the life of the battery is extended as the temperature of the front chamber 40 increases, so that the travel time of the automatic transfer robot is increased by one charge.
  • the warehouse 2 is a storage or a heating room, the worker and the moving body can work in a temperature environment that is not hot as compared with the storage room 30. Therefore, the load on the worker, such as physical power consumption, is suppressed, and the failure of the mobile body due to the deterioration of the device is suppressed.
  • the first load-side unit 10 may supply the storage room 30 with the air that has taken heat from the front room 40 and exchanged heat with the air in the front room 40.
  • the air in the front chamber 40 which has a lower temperature than the outside air, is supplied to the load-side heat exchanger 13, so that the refrigerant exchanges heat with the air near the storage temperature in the load-side heat exchanger 13, thereby saving energy. Can be achieved. Further, compared to the case where air is circulated only inside the storage room 30, the air inside the storage room 30 can be purified.
  • the storage section 31 may be provided with an intake means 135 for taking in the air in the storage chamber 30, and may be provided with a discharge means 137 for discharging the air in the storage section 31 to the front chamber 40.
  • an intake means 135 for taking in the air in the storage chamber 30
  • a discharge means 137 for discharging the air in the storage section 31 to the front chamber 40.
  • the warehouses 2 and 2a having the air conditioning system 1 of the first embodiment have the same effects as the air conditioning system 1.
  • a passage through which a worker or a moving body may pass may be provided in the front room 40 of the warehouses 2 and 2a. In this case, since the temperature control of the front room 40 is less strict than that of the storage room 30, the temperature environment is not severe, and the work of the worker and the moving body is facilitated.
  • the first load-side unit 10 conducts heat of the air after heat exchange to the front room 40, and the second load-side units 11a and 11b air-condition the front room. Therefore, the load on the first load-side unit 10 is reduced as compared with the case where heat is radiated directly to the outside of the warehouse.
  • the temperature of the front room 40 is not lower than that of the storage room 30, the temperature of the front room 40 where people enter and exit can be made higher than before, and the working environment is improved.
  • the fan 14 when the load-side heat exchanger 13 is defrosted, the fan 14 may be rotated in the reverse direction. In this case, the heat generated from the load-side heat exchanger 13 to be defrosted can be discharged to the front room 40 where no storage object is placed. Therefore, it is possible to suppress an increase in the temperature of the stored item during the defrosting operation.
  • Embodiment 2 in the second embodiment, in the air conditioning system described in the first embodiment, entry and exit and temperature of storage items stored in a plurality of storage units can be managed.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
  • FIG. 11 is a diagram illustrating a configuration example of an air conditioning system according to Embodiment 2 of the present invention.
  • the air-conditioning system 1c includes an air-conditioning apparatus 200 and a management terminal 70 that manages entry and exit of storage items stored in the storage room 30.
  • the air conditioning system 1c is applied to the warehouse 2 as in the first embodiment.
  • the air-conditioning apparatus 200 includes the first load-side unit 10, the second load-side units 11a and 11b, and the heat-source-side unit 20 including the control unit 50 described in the first embodiment.
  • FIG. 12 is a block diagram illustrating a configuration example of a control unit of the air-conditioning apparatus illustrated in FIG.
  • the communication unit 53 acquires the detection values of all the private room environment detection sensors 36 at a fixed cycle. Then, the communication unit 53 transmits, to the management terminal 70, environment information including coordinate information indicating the position of the storage unit 31 and a detection value of the private room environment detection sensor 36 provided in the storage unit 31 for every storage unit 31. All the acquired detection values are transmitted to the management terminal 70.
  • the control unit 50 is connected to the damper devices 38a and 38b of each storage unit 31.
  • the refrigeration cycle control unit 54 controls the damper devices 38a and 38b according to the control signal.
  • the damper devices 38a and 38b open and close the baffle according to an instruction from the refrigeration cycle control means 54.
  • FIG. 13 is a diagram showing a configuration example of the management terminal shown in FIG.
  • the management terminal 70 is, for example, an information processing device such as a PC (Personal Computer). As shown in FIG. 13, the management terminal 70 includes a storage unit 71, a control unit 72, a display unit 75, and an operation unit 76.
  • the management terminal 70 includes a storage unit 71, a control unit 72, a display unit 75, and an operation unit 76.
  • the storage unit 71 is, for example, a hard disk drive.
  • the storage unit 71 stores a management table for managing storage items stored in the storage room 30.
  • the control unit 72 has a memory 73 that stores a program, and a CPU 74 that executes processing according to the program.
  • the display unit 75 displays information stored in the storage unit 71.
  • the display unit 75 is, for example, a liquid crystal display device.
  • the operation unit 76 is, for example, an input interface such as a keyboard and a mouse.
  • control unit 72 When the control unit 72 receives the plurality of pieces of environment information from the communication unit 53 of the air conditioner 200, the control unit 72 updates the management table by including the received plurality of pieces of environment information in the management table stored in the storage unit 71.
  • the control unit 72 causes the display unit 75 to display the management table stored in the storage unit 71.
  • the control unit 7 processes information stored in the storage unit 71 according to an instruction input by the administrator via the operation unit 76.
  • the control unit 7 controls the coordinate information of the specified storage unit 31 and the damper devices 38a and 38b. And a control signal including the opening / closing information of the air conditioner 200.
  • FIG. 14 is a diagram illustrating an example of a management table stored in the storage unit illustrated in FIG.
  • the management table includes the detected temperature [° C.], the presence / absence of a storage item, the storage temperature range [° C.], and the name of the storage item corresponding to the coordinate information of each storage unit 31. Be recorded.
  • the administrator looks at the management table, it is possible to know the storage location of the storage unit 31 at which coordinates and the temperature of the storage space of the storage unit 31. For example, since no storage object is stored in the storage unit 31 specified by the coordinates (x2, y1, z1), the supply port 35 and the discharge port 37 are in a closed state, so that the temperature of the other storage unit 31 is reduced. It can be seen that it is higher than that.
  • the management table indicates that the temperature of the storage unit 31 specified by the coordinates (x1, y1, z1) is different from the temperature of the storage unit 31 specified by the coordinates (x2, y4, z2). Therefore, the administrator can select a storage unit 31 suitable for the storage temperature range of the storage item from all the storage units 31 by referring to the management table.
  • FIG. 15 is a sequence diagram showing an operation procedure of the air-conditioning system shown in FIG.
  • the plurality of private room environment detection sensors 36 transmit detection values to the communication unit 53 (step S201).
  • the communication unit 53 transmits a plurality of pieces of environment information to the management terminal 70 (Step S202).
  • the control unit 72 reflects the received plurality of pieces of environmental information in the management table stored in the storage unit 71 and updates the management table (step S203).
  • the control unit 72 causes the display unit 75 to display the updated management table (step S204).
  • the administrator refers to the management table displayed on the display unit 75 to newly store the storage items in the storage room 30, and specifies the storage unit 31 where the storage items are not stored and sets the damper devices 38a and 38b.
  • An instruction to open is input to the operation unit 76.
  • control unit 72 transmits a control signal including coordinate information of designated storage unit 31 and information indicating that damper devices 38a and 38b are to be opened to air conditioner 200. (Step S205).
  • the communication means 53 transfers the control signal received from the management terminal 70 to the refrigeration cycle control means 54.
  • the refrigeration cycle control unit 54 controls the damper devices 38a and 38b of the storage unit 31 at the coordinates designated by the control signal to open the supply port 35 and the discharge port 37. (Step S206).
  • FIG. 16 is a diagram schematically showing an operation procedure of the air-conditioning system according to Embodiment 2 of the present invention.
  • the air-conditioning apparatus 200 generates a plurality of pieces of environment information based on the detection values obtained from the sensor group 45 including the plurality of private room environment detection sensors 36 and passes the information to the management terminal 70. This environmental information not only indicates the operating state of the air conditioner 200 to the manager, but also provides information on the optimal storage position.
  • the management terminal 70 transmits a control signal of the storage position designated by the administrator to the air conditioner 200.
  • the air conditioner 200 controls the damper devices 38a and 38b according to the received control signal.
  • control unit 72 refers to the management table and calculates the refrigeration load based on the number and position of the storage units 31 in which the storage items are stored and the temperature of each storage unit 31. May be.
  • Control unit 72 transmits a control signal for changing the refrigeration output to air conditioner 200 according to the calculated refrigeration load.
  • the refrigeration output is, for example, the air volume, the air direction, and the rotation speed of the compressor 21.
  • the air-conditioning apparatus 200 can reduce the temperature variation in the storage room 30 and make the temperature in the space more uniform.
  • the refrigeration cycle control unit 54 may close the damper devices 38a and 38b of all the storage units 31 in which the storage items are stored. In this case, it is possible to suppress an increase in the temperature of the storage item.
  • the air-conditioning apparatus 200 controls the opening and closing of the damper devices 38a and 38b of the respective storage sections 31, the moving objects including the automatic transport robots can enter and exit the storage items into and from the storage section 31. Good. In this case, it is not necessary for the worker to carry the storage object into the storage unit 31 from the front room 40 or to remove the storage object from the storage unit 31. Since the temperature control of the front room 40 is less strict than that of the storage room 30, the temperature environment is not severe, and the work of the moving body is easier in the front room 40. Therefore, a failure of the mobile body due to deterioration of the device or the like is suppressed. Furthermore, in the second embodiment, the case of temperature management has been described. However, the humidity may be managed by making the private room environment detection sensor 36 detect not only the temperature but also the humidity.
  • the warehouse manager selects the storage unit 31 according to the temperature of each storage unit 31 and the load of the air conditioner 200 at the time of storage of the storage object, thereby storing the storage object.
  • the effect of expanding the sales destination of the air conditioner 200 to the product shelf manufacturer can be expected.
  • the standard of the communication between the private room environment detection sensor 36 and the communication unit 53 and the standard of the communication between the communication unit 53 and the management terminal 70 are made common so that each storage unit 31 can be specified by an identifier such as a coordinate. By doing so, it can be expected that the application range of the air conditioner 200 will be expanded.
  • Embodiment 3 an information processing terminal is connected to the air-conditioning apparatus described in the second embodiment via a network so as to be able to monitor the entry and exit of stored items stored in a plurality of storage units and the temperature. It is.
  • the same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.
  • FIG. 17 is a diagram illustrating a configuration example of an air-conditioning system according to Embodiment 3 of the present invention.
  • the air-conditioning system 1d includes an air-conditioning apparatus 200, a management terminal 70, and a server 80 connected to the air-conditioning apparatus 200 via the network 100.
  • the network 100 is, for example, the Internet.
  • the information processing terminal 90 may be, for example, a notebook PC, a portable information processing terminal such as a smartphone, or a desktop PC.
  • the server 80 stores the management table.
  • the server 80 periodically acquires a management table from the management terminal 70 via the communication unit 53 of the air conditioner 200, and updates the stored management table.
  • the communication means 53 of the air-conditioning apparatus 200 according to Embodiment 3 has a function of communicating with the information processing terminal 90 using a communication protocol conforming to the network 100.
  • the communication protocol is, for example, TCP (Transmission @ Control @ Protocol) / IP (Internet @ Protocol).
  • FIG. 18 is a diagram schematically showing an operation procedure of the air-conditioning system shown in FIG. In the third embodiment, a detailed description of the operation described in the second embodiment will be omitted.
  • the server 80 acquires the management table from the management terminal 70 via the communication unit 53 of the air conditioner 200, and updates the stored management table.
  • the information processing terminal 90 transmits an information request signal to request the management table to the server 80.
  • the server 80 transmits the management table to the information processing terminal 90.
  • the information processing terminal 90 displays the management table acquired from the server 80.
  • the management table serves as entry / exit information indicating the entry / exit status of the storage item for the user.
  • the user using air conditioning system 1d refers to the management table on his / her information processing terminal to check the storage environment of his / her stored items in storage room 30. be able to.
  • the management terminal 70 may be connected to the network 100.
  • Embodiment 4 in the air conditioning system described in the first embodiment, the humidity of a stored item can be managed.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
  • the air conditioning system according to Embodiment 4 will be described with reference to FIGS.
  • the air-conditioning system 1 according to Embodiment 4 is applied to a warehouse that stores humidity-managed items such as wood instead of temperature-controlled items.
  • the air-conditioning system 1 described in the first embodiment functions as a dehumidifier.
  • the private room environment detection sensor 36 detects not only temperature but also humidity.
  • the communication unit 53 acquires the detection values from all the private room environment detection sensors 36, and determines the storage room humidity using at least one of the acquired detection values.
  • the refrigeration cycle control unit 54 controls the refrigeration cycle based on the storage room humidity and the storage room set humidity notified from the communication unit 53 such that the storage room humidity matches the storage room set humidity within a certain range. .
  • the air conditioning system 1 of the fourth embodiment may be applied to the systems described in the second and third embodiments. Further, in the air conditioning system 1 according to Embodiment 4, the suction port and the discharge port of the above-described dehumidifier may be replaced with each other.
  • the same effects as in the first embodiment can be obtained when the storage target is a humidity controlled product.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Defrosting Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Le système de climatisation selon la présente invention comprend : une première unité côté charge qui conditionne l'air à l'intérieur d'une chambre de stockage pour stocker un objet de telle sorte que l'air est à une première température; et une seconde unité côté charge qui conditionne l'air à l'intérieur d'une chambre avant qui comprend l'espace entourant la chambre de stockage de telle sorte que l'air est à une seconde température qui est plus éloignée d'une température pour stocker l'objet que la première température.
PCT/JP2018/024367 2018-06-27 2018-06-27 Système de climatisation et entrepôt WO2020003404A1 (fr)

Priority Applications (2)

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JP2020526775A JP7112026B2 (ja) 2018-06-27 2018-06-27 空気調和システムおよび倉庫
PCT/JP2018/024367 WO2020003404A1 (fr) 2018-06-27 2018-06-27 Système de climatisation et entrepôt

Applications Claiming Priority (1)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS5716768A (en) * 1980-07-02 1982-01-28 Matsuhashi Reinetsu Kogyo Kk Differential pressure type unit
JPH08145533A (ja) * 1994-11-24 1996-06-07 Fuji Electric Co Ltd 冷蔵ショーケース設備
JPH08145523A (ja) * 1994-11-21 1996-06-07 Yoriyuki Oguri 冷蔵ケース
JP2002115934A (ja) * 2000-10-06 2002-04-19 Denso Corp 蒸発器および冷凍機
JP2004299800A (ja) * 2003-03-28 2004-10-28 Jfe Steel Kk 低温倉庫およびそこに保管された物資の出庫方法
JP2009009294A (ja) * 2007-06-27 2009-01-15 Toa Harbor Works Co Ltd 配送物の温度管理システム
JP2012117775A (ja) * 2010-12-02 2012-06-21 Mitsubishi Electric Corp 冷凍・冷蔵機器の負荷側装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019224916A1 (fr) 2018-05-22 2019-11-28 三菱電機株式会社 Dispositif de climatisation et entrepôt équipé de celui-ci

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716768A (en) * 1980-07-02 1982-01-28 Matsuhashi Reinetsu Kogyo Kk Differential pressure type unit
JPH08145523A (ja) * 1994-11-21 1996-06-07 Yoriyuki Oguri 冷蔵ケース
JPH08145533A (ja) * 1994-11-24 1996-06-07 Fuji Electric Co Ltd 冷蔵ショーケース設備
JP2002115934A (ja) * 2000-10-06 2002-04-19 Denso Corp 蒸発器および冷凍機
JP2004299800A (ja) * 2003-03-28 2004-10-28 Jfe Steel Kk 低温倉庫およびそこに保管された物資の出庫方法
JP2009009294A (ja) * 2007-06-27 2009-01-15 Toa Harbor Works Co Ltd 配送物の温度管理システム
JP2012117775A (ja) * 2010-12-02 2012-06-21 Mitsubishi Electric Corp 冷凍・冷蔵機器の負荷側装置

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