JPWO2020003404A1 - Air conditioning system and warehouse - Google Patents

Abstract

The air-conditioning system stores the storage chamber for storing the stored items, the first load-side unit that air-conditions to the first temperature, and the anterior chamber including the space around the storage chamber for the stored items to be stored at a temperature higher than the first temperature. It has a second load-side unit that is air-conditioned to a second temperature away from the storage temperature of the.

Description

The present invention relates to an air conditioning system and a warehouse having a plurality of load side units.

Conventionally, a refrigerating system that keeps the temperature of the refrigerating chamber uniform has been proposed (see, for example, Patent Document 1). The refrigerating system disclosed in Patent Document 1 has a plurality of temperature sensors for measuring the temperature in the refrigerating chamber and a blower, and changes from a relatively low temperature region to a relatively high temperature region in the refrigerating chamber. Control the blower to send air.

Japanese Unexamined Patent Publication No. 2015-152234

In the refrigerating system disclosed in Patent Document 1, since the entire refrigerating room including the space where the object to be cooled is not placed is kept at a constant temperature, a part of the refrigerating output is wasted and the load of air conditioning is increased. Will grow.

The present invention has been made to solve the above problems, and provides an air conditioning system and a warehouse in which the air conditioning load is reduced.

In the air conditioning system according to the present invention, the storage chamber for storing stored objects has a first load-side unit that air-conditions to a first temperature, and a front chamber including a space around the storage chamber. It has a second load-side unit that is air-conditioned to a second temperature that is farther from the storage temperature of the stored object than the temperature of the above.

The warehouse according to the present invention includes a storage chamber for storing stored objects, a front chamber including a space around the storage chamber, and a first load-side unit that air-conditions the storage chamber to a first temperature. The anterior chamber has a second load-side unit that is air-conditioned to a second temperature that is farther from the storage temperature of the stored object than the first temperature.

According to the present invention, the storage chamber is set to the first temperature, and the anterior chamber is set to the second temperature away from the storage temperature of the stored object than the first temperature, thereby creating a space with strict temperature control. It can be narrowed down to a space smaller than the entire warehouse. As a result, the load of air conditioning is reduced.

It is an external perspective view which shows one structural example of the air-conditioning system which concerns on Embodiment 1 of this invention. It is a refrigerant circuit diagram of the air conditioning system shown in FIG. It is a top view of the storage chamber shown in FIG. It is a front view of the storage room shown in FIG. It is a side view of the storage room shown in FIG. It is an external perspective view which shows the structural example of the storage part shown in FIG. It is a block diagram which shows one configuration example of the control part shown in FIG. FIG. 5 is a flowchart showing an air conditioning control procedure executed by the air conditioning system shown in FIG. FIG. 5 is an external perspective view showing another configuration example of a warehouse to which the air conditioning system according to the first embodiment of the present invention is applied. It is a refrigerant circuit diagram which shows another structural example of the air-conditioning system which concerns on Embodiment 1 of this invention of this invention. It is a figure which shows one structural example of the air-conditioning system which concerns on Embodiment 2 of this invention. It is a block diagram which shows one structural example of the control part of the air conditioner shown in FIG. It is a figure which shows one configuration example of the management terminal shown in FIG. It is a figure which shows an example of the management table which the storage part shown in FIG. 13 stores. It is a sequence diagram which shows the operation procedure of the air conditioning system shown in FIG. It is a figure which showed typically the operation procedure of the air-conditioning system of Embodiment 2 of this invention. It is a figure which shows one structural example of the air-conditioning system which concerns on Embodiment 3 of this invention. It is a figure which shows typically the operation procedure of the air-conditioning system shown in FIG.

Embodiment 1.
The configuration of the air conditioning system of the first embodiment will be described. FIG. 1 is an external perspective view showing a configuration example of an air conditioning system according to a first embodiment of the present invention. The air conditioning system 1 performs air conditioning of a warehouse 2 having a storage chamber 30 for storing stored items and a front chamber 40 including a space around the storage chamber 30. In the first embodiment, the stored object is an object to be cooled. The anterior chamber 40 is a space through which workers who put in and take out stored items in the storage chamber 30 pass. A moving body including an automatic transfer robot that conveys a stored object may travel in the front chamber 40. FIG. 1 shows a case where the storage chamber 30 is a box body having a rectangular parallelepiped shape, but the outer shape of the storage chamber 30 is not limited to the rectangular parallelepiped shape.

As shown in FIG. 1, the air conditioning system 1 includes a first load-side unit 10 that air-conditions the storage chamber 30, second load-side units 11a and 11b that air-condition the front chamber 40, and a heat source-side unit. Has 20 and. 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 a refrigerant pipe, but the refrigerant pipe is omitted from the figure. The anterior chamber 40 is provided with an anterior chamber environment detection sensor 41 that detects the temperature of the air in the anterior chamber 40.

The first load-side unit 10 is attached to the wall of the storage chamber 30. The second load-side units 11a and 11b are attached to the wall of the anterior chamber 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 includes 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 includes 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 a refrigerant pipe to form a refrigerant circuit 60 in which the refrigerant circulates. To. Further, 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 a refrigerant pipe. The bypass circuit 65 is connected to the refrigerant inlets of the load side heat exchangers 13, 13a and 13b and the refrigerant discharge port of the compressor 21. The bypass circuit 65 circulates the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 to 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, for example, 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 distributes the high-temperature and high-pressure refrigerant discharged from the compressor 21 to the bypass circuit 65.

The configuration of the first load-side unit 10 will be described. The expansion device 12 expands the refrigerant flowing from the heat source side heat exchanger 22 to reduce the pressure. The expansion device 12 is, for example, an electric expansion valve capable of adjusting 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 sucks air from the front chamber 40 and sends it to the load side heat exchanger 13, and supplies the air after heat exchange to the storage chamber. The fan 14 is a fan such as a propeller fan and a sirocco fan, for example. 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 opens 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 switch the flow path of the refrigerant according to the operation modes of the cooling operation and the defrosting operation. The switching device 17 is configured.

The flow of the refrigerant during the cooling operation will be described with reference to the refrigerant circuit diagram shown in FIG. It is assumed that the first on-off valves 15, 15a and 15b are all in the open state. When the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the heat source-side heat exchanger 22, the heat-source-side heat exchanger 22 exchanges heat with air to dissipate heat, thereby condensing the refrigerant. The condensed and liquefied refrigerant flows into the expansion devices 12, 12a and 12b via the refrigerant pipe. In the expansion devices 12, 12a and 12b, the liquid refrigerant is depressurized and expands. Subsequently, when the liquid refrigerant flows into the load side heat exchangers 13, 13a and 13b, it exchanges heat with the air in the storage chamber 30 and the front chamber 40 and absorbs heat from the air. As a result, the air in the storage chamber 30 and the anterior chamber 40 is cooled. The endothermic refrigerant evaporates into a gas. The vaporized refrigerant returns to the compressor 21 of the heat source side unit via the refrigerant pipe.

The configuration of the storage chamber 30 shown in FIG. 1 will be described. FIG. 3 is a top view of the storage chamber 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 chamber shown in FIG. The ceiling, floor and walls of the storage room 30 are composed of heat insulating walls.

As shown in FIGS. 3 to 5, the storage chamber 30 has a plurality of storage units 31 for storing stored items. The storage room 30 can store a number of stored items corresponding to the number of storage units 31. As shown in FIG. 4, the first load-side unit 10 is provided above the plurality of storage units 31. In order to be able to specify the position of each storage unit 31, the identifier of each storage unit 31 is represented by three-dimensional coordinates using the three axes of the X-axis, Y-axis, and Z-axis shown in the figure. In the first embodiment, since the storage chamber 30 has 2 × 4 × 3 = 24 storage units 31, the positions of the storage units 31 are set to the coordinates (x1, y1, z1) to (x2). It is represented by y4, z3).

As shown in FIG. 3, two storage groups 32 composed of 12 storage units 31 having the same x-axis coordinates are arranged with the conditioned air supply path 33 in between. In one storage group 32, four storage portions 31 are arranged in the longitudinal direction (Y-axis arrow direction) of the horizontal plane of the storage chamber 30. As shown in FIGS. 4 and 5, one storage group 32 is provided with three storage portions 31 in the vertical direction (Z-axis arrow direction). One storage group 32 is composed of 12 storage units 31. The arrow shown in FIG. 3 indicates the direction in which air flows. As shown in FIG. 3, the first load-side unit 10 takes in air sucked from the front chamber 40 shown in FIG. 1 via the load-side heat exchanger 13 shown in FIG. 2 in the storage chamber 30. It is sent out to the air-conditioned air supply path 33.

FIG. 6 is an external perspective view showing a configuration example of the storage portion shown in FIG. The storage unit 31 is a section in which the storage room 30 is partitioned by a partition wall 34, and is a box body having a storage space for storing stored items. The storage unit 31 includes an intake means 135 that takes in the air of the storage room 30 into the storage space, a discharge means 137 that discharges the air of the storage space to the front chamber 40, and a private room environment detection sensor 36 that detects the temperature of the storage space. Has.

The taking-in means 135 includes a supply port 35 provided on the partition wall 34 facing the storage chamber 30, and a damper device 38a for adjusting the opening degree of the supply port 35. The discharge means 137 includes a discharge port 37 provided on the partition wall 34 facing the front chamber 40, and a damper device 38b for adjusting the opening degree of the discharge port 37. The damper devices 38a and 38b are, for example, devices provided with a baffle capable of adjusting the opening degree 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 / closed state of the damper devices 38a and 38b of each storage unit 31.

For example, when stored items are stored in the storage unit 31, the damper devices 38a and 38b of the storage unit 31 are opened. In this case, cold air can be introduced into the storage space from the storage room 30. When the stored items are not stored in the storage space, the damper devices 38a and 38b of the storage unit 31 are closed. In this case, the inflow of cold air from the first load-side unit 10 into the storage unit 31 in which the stored material is not stored is suppressed. As a result, the cooling efficiency of the stored material stored in the storage unit 31 is improved. Further, even if there is a stored object in the storage unit 31, the damper devices 38a and 38b may be closed when the temperature of the storage space of the storage unit 31 reaches the set temperature. In this case, the temperature of the storage space is maintained at a low temperature. After that, when the temperature of the storage space of the storage unit 31 becomes higher than the set temperature, cold air can be taken into the storage space by switching the damper devices 38a and 38b from the closed state to the open state.

With the above configuration, the temperature of the storage space can be finely adjusted for each storage unit 31, so that the most suitable storage temperature for the stored items stored in the storage unit 31 may differ for each stored item. The temperature range suitable for storage of each stored object based on the storage temperature is referred to as a storage temperature range.

The configuration of the control unit 50 shown in FIG. 2 will be described. FIG. 7 is a block diagram showing a configuration example of the control unit shown in FIG. The control unit 50 is, for example, a microcomputer. As shown in FIG. 2, the control unit 50 includes a memory 51 for storing a program and a CPU (Central Processing Unit) 52 for executing processing according to the program. As shown in FIG. 7, the control unit 50 includes a communication means 53 and a refrigeration cycle control means 54. When the CPU 52 executes the program, the communication means 53 and the refrigeration cycle control means 54 are configured in the air conditioning system 1.

The communication means 53 acquires the detected values from the front room environment detection sensor 41 and all the private room environment detection sensors 36. The communication means 53 notifies the refrigeration cycle control means 54 of the detected value of the anterior chamber environment detection sensor 41 as the anterior chamber temperature. When the communication means 53 acquires the detected values from all the private room environment detection sensors 36, the communication means 53 determines the storage room temperature using at least one of the acquired detected values and notifies the refrigeration cycle control means 54. To do. The communication means 53 may determine the detection value of one private room environment detection sensor 36 among all the private room environment detection sensors 36 as the storage room temperature, or may use the average value of two or more detected values as the storage room temperature. Good.

For example, when there is a private room environment detection sensor 36 that indicates the average temperature of the storage room 30 among the plurality of private room environment detection sensors 36, the communication means 53 is a single private room environment detection sensor 36 that indicates the average temperature. The detected value may be determined by the storage room temperature. Further, the communication means 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. For example, in FIG. 5, 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 top, so that it is stored. It is considered that the temperature is the highest in the room 30. In this case, if the communication means 53 notifies the refrigeration cycle control means 54 of the detection value of the private room environment detection sensor 36 of the storage unit 31 of the coordinates (x2, y4, z3) as the storage room temperature, all of the inside of the storage room 30. The storage unit 31 becomes the storage room set temperature HTs or less. The storage room set temperature HTs is the 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 stored items stored in the plurality of storage units 31 of the storage room 30.

The refrigeration cycle control means 54 controls the refrigeration cycle of the refrigerant circulating in the refrigerant circuit 60 based on the anterior chamber temperature and the storage chamber temperature notified from the communication means 53. Specifically, the refrigeration cycle control means 54 is a compressor so that the storage chamber temperature matches the storage chamber set temperature HTs in a certain range and the anterior chamber temperature matches the anterior chamber set temperature ZTs in a certain range. The number of rotations of 21 and the opening degrees of the expansion devices 12, 12a and 12b are controlled. The anterior chamber set temperature ZTs is the target temperature of the anterior chamber 40.

Here, the relationship of the air temperature in the air conditioning performed by the air conditioning system 1 of the first embodiment will be described. In the first embodiment, the case where the blowout temperature of the first load side unit 10 and the second load side units 11a and 11b is not detected is described, but these blowout temperatures may be detected. Let T10set be the set temperature of the blowout temperature of the first load-side unit 10, and let T11set be the set temperature of the blowout temperature of the second load-side units 11a and 11b. The relationship between 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 stored material becomes equivalent to the storage room set temperature HTs within a certain range. In the first embodiment, for example, when the set temperature T10set is −30 ° C., the storage room set temperature HTs is −25 ° C. Further, when the set temperature T11set is −5 ° C., the anterior chamber set temperature ZTs is 0 ° C. Assuming that the storage room set temperature HTs is the first temperature and the anterior chamber set temperature ZTs is the second temperature, the second temperature is higher than the first temperature for the storage temperature of the stored object due to the above-mentioned air temperature. The temperature is far from.

Next, the air conditioning control performed by the air conditioning system 1 of the first embodiment will be described. FIG. 8 is a flowchart showing an air conditioning control procedure executed by the air conditioning system shown in FIG. Here, the refrigeration cycle control means 54 uses the storage room temperature HT acquired from one of the plurality of private room environment detection sensors 36 as the storage room temperature HT. Further, the anterior chamber temperature is expressed as ZT.

When the communication means 53 acquires the anterior chamber temperature ZT from the anterior chamber environment detection sensor 41 (step S101), the communication means 53 notifies the refrigeration cycle control means 54 of the anterior chamber temperature ZT. When the communication means 53 acquires the detected values from all the private room environment detection sensors 36 (step S102), the communication means 53 notifies the refrigeration cycle control means 54 of one detected value from these detected values as the storage room temperature HT. In step S103, 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 chamber temperature HT matches the storage chamber set temperature HTs within a certain range.

As a result of the determination in step S103, when the anterior chamber temperature ZT matches the anterior chamber set temperature ZTs within a certain range and the storage chamber temperature HT matches the storage chamber set temperature HTs within a certain range, the refrigeration cycle control means 54 , Return to step S101. Further, as a result of the determination in step S103, when the anterior chamber temperature ZT does not match the anterior chamber set temperature ZTs in a certain range and the storage chamber temperature HT does not match the storage chamber set temperature HTs in a certain range, the refrigeration cycle control Means 54 control the refrigeration cycle. Specifically, the refrigeration cycle control means 54 adjusts the rotation speed of the compressor 21 and the opening degrees of the expansion devices 12, 12a and 12b (step S104).

On the other hand, as a result of the determination in step S103, when the anterior chamber temperature ZT does not match the anterior chamber set temperature ZTs in a certain range, but the storage chamber temperature HT matches the storage chamber set temperature HTs in a certain range (step S105). Yes), the refrigeration cycle control means 54 proceeds to step S106. In step S106, the refrigeration cycle control means 54 adjusts the opening degrees of the expansion devices 12a and 12b (step S106). As a result of the determination in step S103, when the storage chamber temperature HT does not match the storage chamber set temperature HTs in a certain range, but the anterior chamber temperature ZT matches the anterior chamber set temperature ZTs in a certain range (No in step S105). , Refrigeration cycle control means 54 proceeds to step S107. In step S107, the refrigeration cycle control means 54 adjusts the opening degree of the expansion device 12 (step S107).

In this way, the anterior chamber temperature is maintained at 0 ° C. and the storage chamber temperature is maintained at −25 ° C., which is lower than the anterior chamber temperature. The air condition layer outside the warehouse is the first layer, the air condition layer of the front chamber 40 is the second layer, the air condition of the air conditioning air supply path 33 of the storage chamber 30 is the third layer, and the air of the storage unit 31 is the third layer. The state is the fourth layer. The third and fourth layers are set to a harsh temperature environment, and the second layer is set to a lower temperature environment than the third and fourth layers. Therefore, the space with strict temperature control can be narrowed down to a space smaller than the entire warehouse. Further, the first load-side unit 10 takes in air from the front chamber 40, dissipates the heat of the storage chamber 30 to the front chamber 40, and the second load-side units 11a and 11b air-condition the front chamber 40. There is. As a result, the load of the first load-side unit 10 is reduced as compared with the case where the outside air is taken in.

In the flow chart shown in FIG. 8, the communication means 53 determines the storage room temperature HT after acquiring the anterior chamber temperature ZT, but whichever comes first may be used. 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 as well, the compressor 21 is controlled in the same manner as in step S104. You may go.

Next, a case where the air conditioning system 1 of the first embodiment defrosts the load side heat exchanger 13 will be described with reference to the refrigerant circuit diagram shown in FIG. Here, the case where the load side heat exchanger 13 is defrosted will be described.

The refrigeration cycle control means 54 switches the rotation direction of the fan 14 so as to suck air from the storage chamber 30 and send it out to the front chamber 40. Subsequently, the refrigeration cycle control means 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. As a result, 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 chamber 30 and sends it out to the front chamber 40, the heat generated from the load side heat exchanger 13 is conducted from the storage chamber 30 to the front chamber 40.

In this case, the supply port 35 and the discharge port 37 of the storage unit 31 in which the stored items are stored may be closed. In this case, it is possible to prevent the temperature of the stored object from rising.

When the defrosting of the load side heat exchanger 13 is completed, the refrigeration cycle control means 54 closes the bypass valve 23 and the second on-off valve 16. After that, the refrigeration cycle control means 54 opens the first on-off valve 15. Further, the rotation direction of the fan 14 is switched so as to suck air from the front chamber 40 and send it out to the storage chamber 30.

In the first embodiment, the case where the storage room 30 has a plurality of storage units 31 has been described, but the storage room 30 may not be provided with the storage units 31. In this configuration, the first load-side unit 10 may suck the air in the front chamber 40 and supply the heat-exchanged air to the storage chamber 30. In this case, the air flow becomes the front chamber 40 → the storage chamber 30 → the front chamber 40. By supplying the air in the front chamber 40, which has a temperature lower than that of the outside air, to the load side heat exchanger 13, the refrigerant exchanges heat with the air having a temperature close to the storage temperature in the load side heat exchanger 13, so that energy saving can be achieved. Further, the air inside the storage chamber 30 can be purified as compared with the case where the air is circulated only inside the storage chamber 30.

Further, FIG. 1 shows a configuration in which one storage chamber 30 is provided in the anterior chamber 40, but the number of storage chambers 30 installed in the anterior chamber 40 is not limited to one, and may be a plurality. Good. FIG. 9 is an external perspective view showing another configuration example of a warehouse to which the air conditioning system according to the first embodiment of the present invention is applied.

The air conditioning system 1a shown in FIG. 9 is applied to a warehouse 2a provided with two storage chambers 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 chamber 30a, and the first load-side unit 10b is attached to the storage chamber 30b. In this case, the air conditioning system 1a can also maintain the storage temperature of the storage chamber 30a and the storage temperature of the storage chamber 30b differently.

Further, in the first embodiment, the case where the heat source side unit 20 is one has been described, but the heat source side unit is provided in each of the first load side unit 10 and the second load side units 11a and 11b, respectively. You may. FIG. 10 is a refrigerant circuit diagram showing another configuration example of the air conditioning system according to the first embodiment of the present invention. As shown in FIG. 10, 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 includes a compressor 21a, a heat source side heat exchanger 22a, and a bypass valve 23a. The heat source side unit 20b includes a compressor 21b, a heat source side heat exchanger 22b, and a bypass valve 23b.

In the configuration shown in FIG. 10, 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 to form a refrigerant circuit 60a in which the refrigerant circulates. 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 to form a refrigerant circuit 60b in which the refrigerant circulates. The control unit 50 may be provided at any place in the air conditioning system 1b as long as it is connected to the refrigerant devices of the refrigerant circuits 60, 60a and 60b and can control the refrigeration cycle.

Further, although the case where the first load side unit is one and the second load side unit is two is described, the number of these load side units is not limited. For example, although the case where the second load side unit is two units has been described, the second load side unit may be one unit. Further, in the first embodiment, although the case of temperature control has been described, the humidity may be controlled by making the private room environment detection sensor 36 detect not only the temperature but also the humidity.

In the air conditioning system 1 of the first embodiment, the first load side unit 10 that air-conditions the storage chamber 30 to the first temperature and the front chamber 40 are set from the storage temperature of the stored object rather than the first temperature. It has second load-side units 11a and 11b that are air-conditioned to a second temperature apart.

According to the first embodiment, the temperature is set by setting the storage chamber 30 to the first temperature and setting the anterior chamber 40 to a second temperature away from the storage temperature of the stored object than the first temperature. Spaces that are difficult to manage can be narrowed down to smaller spaces 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. In addition, the temperature variation in the space where the stored items are stored is suppressed, and the storage environment is improved. Further, by reducing the load of the air conditioning system 1, the horsepower of the compressor 21 can be reduced as compared with the conventional case, so that the initial cost can be reduced.

Further, according to the first embodiment, since the temperature control of the anterior chamber 40 is not strict as compared with the storage chamber 30, the temperature environment is not harsh, and the work of the operator and the moving body becomes easy in the anterior chamber 40. .. When the warehouse 2 is a freezer, workers and mobiles can work in a temperature environment that is not colder than the storage room 30. For example, when the automatic transfer robot as a moving body is battery-powered, the higher the temperature of the front chamber 40, the longer the battery life, so that the running time of the automatic transfer robot becomes longer with one charge. Further, when the warehouse 2 is a storage or heating storage, the worker and the moving body can work in a temperature environment that is not hotter than that of the storage room 30. Therefore, the load such as physical exhaustion is suppressed for the worker, and the failure caused by the deterioration of the device is suppressed for the moving body.

Further, the first load-side unit 10 may suck the air in the front chamber 40 and supply the heat-exchanged air to the storage chamber 30. In this case, 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 close to the storage temperature in the load side heat exchanger 13, which saves energy. Can be planned. Further, the air inside the storage chamber 30 can be purified as compared with the case where the air is circulated only inside the storage chamber 30.

Further, the storage unit 31 may be provided with an intake means 135 for taking in the air of the storage chamber 30, and may be provided with a discharge means 137 for discharging the air of the storage unit 31 to the front chamber 40. By opening the intake means 135 and the discharge means 137, the cold air of the storage chamber 30 can be introduced into the storage unit 31, and the air whose temperature has risen in the storage unit 31 can be discharged to the front chamber 40. it can.

Further, the warehouses 2 and 2a having the air conditioning system 1 of the first embodiment also have the same effect as the air conditioning system 1. Further, the front chamber 40 of the warehouses 2 and 2a may be provided with a passage through which a worker or a moving body passes. In this case, since the temperature control of the front chamber 40 is not strict as compared with the storage chamber 30, the temperature environment is not harsh and the work of the operator and the moving body becomes easy.

In the first embodiment, the first load-side unit 10 conducts the heat of the air after heat exchange to the front chamber 40, and the second load-side units 11a and 11b air-condition the front chamber. Therefore, the load of the first load-side unit 10 is reduced as compared with the case where heat is dissipated directly to the outside of the warehouse.

Further, in the first embodiment, since the temperature of the anterior chamber 40 is not as low as that of the storage chamber 30, the temperature of the anterior chamber 40 in which people enter and exit can be made higher than before, and the working environment is improved.

Further, in the first embodiment, by keeping the supply port 35 and the discharge port 37 of the storage unit 31 in which the stored items are not stored in a closed state, the cooling efficiency of the stored items is improved.

In the first embodiment, the fan 14 may be rotated in the reverse direction when the load side heat exchanger 13 is defrosted. In this case, the heat generated from the load side heat exchanger 13 to be defrosted can be discharged to the front chamber 40 in which the stored object is not placed. Therefore, it is possible to prevent the temperature of the stored object from rising during the defrosting operation.

Embodiment 2.
In the second embodiment, in the air conditioning system described in the first embodiment, it is possible to control the entry / exit and the temperature of the stored items stored in a plurality of storage units. In the second embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and detailed description thereof will be omitted.

The configuration of the air conditioning system of the second embodiment will be described. FIG. 11 is a diagram showing a configuration example of an air conditioning system according to the second embodiment of the present invention. The air conditioning system 1c includes an air conditioning device 200 and a management terminal 70 that manages the entry and exit of stored items stored in the storage chamber 30. The air conditioning system 1c is applied to the warehouse 2 as in the first embodiment. The air conditioner 200 includes a first load-side unit 10, second load-side units 11a and 11b, and a heat source-side unit 20 including a control unit 50, as described in the first embodiment.

FIG. 12 is a block diagram showing a configuration example of a control unit of the air conditioner shown in FIG. The communication means 53 acquires the detection values of all the private room environment detection sensors 36 at regular intervals. Then, the communication means 53 transmits the environmental information including the coordinate information indicating the position of the storage unit 31 and the detection value of the private room environment detection sensor 36 provided in the storage unit 31 to the management terminal 70 for each storage unit 31. All the detected values transmitted and acquired 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. When the refrigeration cycle control means 54 receives a control signal from the management terminal 70 including coordinate information indicating the position of the storage unit 31 and opening / closing information of the damper devices 38a and 38b, the refrigeration cycle control means 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 the 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 storage unit 71 is, for example, a hard disk drive device. The storage unit 71 stores a management table that manages stored items stored in the storage room 30. The control unit 72 has a memory 73 for storing a program and a CPU 74 for executing processing according to the program. The display unit 75 displays the 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.

When the control unit 72 receives a plurality of environmental information from the communication means 53 of the air conditioner 200, the control unit 72 includes the received plurality of environmental information in the management table stored in the storage unit 71 and updates the management table. 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 the information stored in the storage unit 71 according to the instruction input by the administrator via the operation unit 76. When the administrator inputs the designation of the storage unit 31 and the opening / closing instruction of the damper devices 38a and 38b from the administrator, the control unit 7 receives the coordinate information of the designated storage unit 31 and the damper devices 38a and 38b. A control signal including the opening / closing information of the air conditioner 200 is transmitted to the air conditioner 200.

FIG. 14 is a diagram showing an example of a management table stored in the storage unit shown in FIG. As shown in FIG. 14, in the management table, the detection temperature [° C.], the presence / absence of the stored item, the storage temperature range [° C.], and the name of the stored item correspond to the coordinate information of each storage unit 31. Recorded. When the administrator looks at the management table, it is possible to know at which coordinate the storage unit 31 the stored object is stored and what the temperature of the storage space of the storage unit 31 is. For example, since the stored items are not 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 is different from the storage unit 31. It can be seen that it is higher than.

Further, the management table shows that the temperature of the storage unit 31 specified by the coordinates (x1, y1, z1) and the temperature of the storage unit 31 specified by the coordinates (x2, y4, z2) are different. Therefore, the administrator can select the storage unit 31 suitable for the storage temperature range of the stored object from all the storage units 31 by referring to the management table.

Next, the operation procedure of the air conditioning system of the third embodiment will be described. FIG. 15 is a sequence diagram showing an operating procedure of the air conditioning system shown in FIG. The plurality of private room environment detection sensors 36 transmit the detected value to the communication means 53 (step S201). The communication means 53 transmits a plurality of environmental information to the management terminal 70 (step S202). When the control unit 72 receives a plurality of environmental information from the air conditioner 200, the control unit 72 reflects the received plurality 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). In order to newly store the stored items in the storage room 30, the administrator refers to the management table displayed on the display unit 75, designates the storage unit 31 in which the stored items are not stored, and assigns the damper devices 38a and 38b. An instruction to open the state is input to the operation unit 76. When an instruction is input from the administrator, the control unit 72 transmits a control signal including the coordinate information of the designated storage unit 31 and the information to open the damper devices 38a and 38b to the 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. Upon receiving the control signal from the communication means 53, the refrigeration cycle control means 54 controls the damper devices 38a and 38b of the storage unit 31 having the coordinates specified 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 operating procedure of the air conditioning system according to the second embodiment of the present invention. The air conditioner 200 generates a plurality of environmental information based on the detection values acquired from the sensor group 45 including the plurality of private room environment detection sensors 36 and passes them to the management terminal 70. This environmental information not only indicates the operating state of the air conditioner 200, but also provides the manager with information on the optimum storage position. The management terminal 70 transmits a control signal of the storage position designated by the manager to the air conditioner 200. The air conditioner 200 controls the damper devices 38a and 38b according to the received control signal.

In the second embodiment, the control unit 72 refers to the management table and calculates the freezing load based on the number and position of the storage units 31 in which the stored items are stored and the temperature of each storage unit 31. You may. The control unit 72 transmits a control signal for changing the refrigerating output to the air conditioner 200 according to the calculated refrigerating load. The refrigerating output is, for example, the air volume, the wind direction, and the rotation speed of the compressor 21. In this case, the air conditioner 200 can reduce the temperature variation in the storage chamber 30 and make the temperature in the space more uniform by controlling the refrigeration output according to the received control signal.

Further, when the refrigerating cycle control means 54 performs the defrosting operation of the first load side unit 10, the damper devices 38a and 38b of all the storage units 31 in which the stored items are stored may be closed. In this case, it is possible to prevent the temperature of the stored object from rising.

Further, since the air conditioner 200 controls the opening and closing of the damper devices 38a and 38b of each storage unit 31, even if the moving body including the automatic transfer robot performs the loading and unloading of the stored items into and from the storage unit 31. Good. In this case, it is not necessary for the operator to take the stored item and put it in the storage unit 31 from the front chamber 40 or take out the stored item from the storage unit 31. Since the temperature control of the anterior chamber 40 is not strict as compared with the storage chamber 30, the temperature environment is not harsh, and the work of the moving body becomes easy in the anterior chamber 40. Therefore, the moving body is suppressed from being damaged due to deterioration of the device or the like. Further, in the second embodiment, although the case of temperature control has been described, the humidity may be controlled by making the private room environment detection sensor 36 detect not only the temperature but also the humidity.

According to the second embodiment, the manager of the warehouse 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 warehousing the stored material. Not only can the stored items be stored in an environment suitable for each stored item, but also the power consumption of the air conditioner 200 can be reduced. As a result, it is possible to automate the maintenance of the environment of the stored items and save energy in the air conditioner 200.

Further, according to the second embodiment, it is expected that the sales destination of the air conditioner 200 will be expanded to the product shelf manufacturers. In this case, the standard of the communication of the private room environment detection sensor 36 and the communication means 53 and the communication of the communication means 53 and the management terminal 70 are made common so that the administrator can identify each storage unit 31 by an identifier such as coordinates. By doing so, it can be expected that the applicable range of the air conditioner 200 will be expanded.

Embodiment 3.
In the third embodiment, an information processing terminal is connected to the air conditioner described in the second embodiment via a network so that the input / output and temperature of stored items stored in a plurality of storage units can be monitored. Is. In the third embodiment, the same components as those in the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

The configuration of the air conditioning system of the third embodiment will be described. FIG. 17 is a diagram showing a configuration example of an air conditioning system according to a third embodiment of the present invention. The air-conditioning system 1d includes an air-conditioning device 200, a management terminal 70, and a server 80 connected to the air-conditioning device 200 via a network 100. The network 100 is, for example, the Internet. The information processing terminal 90 may be, for example, a portable information processing terminal such as a notebook PC and a smartphone, or may be 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 means 53 of the air conditioner 200, and updates the storage management table. The communication means 53 of the air conditioner 200 of the third embodiment has a function of communicating with the information processing terminal 90 by using a communication protocol compliant with the network 100. The communication protocol is, for example, TCP (Transmission Protocol) / IP (Internet Protocol).

The operation of the air conditioning system 1d according to the third embodiment will be described. FIG. 18 is a diagram schematically showing an operating procedure of the air conditioning system shown in FIG. In the third embodiment, 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 means 53 of the air conditioner 200, and updates the management table to be stored. When the user using the air conditioning system 1d operates the information processing terminal 90 and inputs that the management table is requested, the information processing terminal 90 transmits an information request signal indicating that the management table is requested to the server 80. .. When the server 80 receives the information request signal from the information processing terminal 90 via the network 100, 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 warehousing / delivery information indicating the warehousing / delivery status of the stored items to the user.

According to the third embodiment, the user who uses the air conditioning system 1d confirms the storage environment of his / her stored items stored in the storage room 30 by referring to the management table on his / her information processing terminal. be able to. In the third embodiment, the case where the air conditioner 200 is connected to the network 100 has been described, but the management terminal 70 may be connected to the network 100.

Embodiment 4.
In the fourth embodiment, the humidity of the stored object can be controlled in the air conditioning system described in the first embodiment. In the fourth embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and detailed description thereof will be omitted.

The air conditioning system of the fourth embodiment will be described with reference to FIGS. 1 to 6. The air conditioning system 1 of the fourth embodiment is applied to a warehouse in which the storage object is not a temperature-controlled product but a humidity-controlled product such as wood. In the fourth embodiment, the air conditioning system 1 described in the first embodiment functions as a dehumidifying device. The private room environment detection sensor 36 detects not only temperature but also humidity.

The operation of the air conditioning system 1 of the fourth embodiment will be described. The communication means 53 acquires detected values from all the private room environment detection sensors 36, and determines the storage room humidity using at least one detected value among all the acquired detected values. The refrigeration cycle control means 54 controls the refrigeration cycle so that the storage room humidity matches the storage room set humidity within a certain range based on the storage room humidity and the storage room set humidity notified from the communication means 53. ..

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 of the fourth embodiment, the suction port and the outlet of the dehumidifying device described above may be interchanged and installed.

According to the fourth embodiment, when the storage target is a humidity-controlled product, the same effect as that of the first embodiment can be obtained.

1, 1a to 1d air conditioning system, 2, 2a warehouse, 7 control unit, 10, 10a, 10b first load side unit, 11a, 11b second load side unit, 12, 12a, 12b expander, 13, 13a, 13b Load side heat exchanger, 14, 14a, 14b Fan, 15, 15a, 15b First on-off valve, 16, 16a, 16b Second on-off valve, 17 flow path switching device, 20, 20a, 20b Heat source Side unit, 21, 21a, 21b Compressor, 22, 22a, 22b Heat source side heat exchanger, 23, 23a, 23b Bypass valve, 30, 30a, 30b Storage room, 31 storage unit, 32 storage group, 33 Air conditioning air supply Road, 34 partition wall, 35 supply port, 36 private room environment detection sensor, 37 discharge port, 38a, 38b damper device, 40 front room, 41 front room environment detection sensor, 45 sensor group, 50 control unit, 51 memory, 52 CPU, 53 Communication means, 54 Refrigeration cycle control means, 60, 60a, 60b Refrigerant circuit, 65 Bypass circuit, 70 Management terminal, 71 Storage unit, 72 Control unit, 73 Memory, 74 CPU, 75 Display unit, 76 Operation unit, 80 Server , 90 Information processing terminal, 100 network, 135 intake means, 137 discharge means, 200 air conditioner.

Air conditioning system according to the present invention, a storage room, each having a plurality of storage portions storing storage products, and a first load-side unit that air-conditioning to a first temperature, the space of the outer circumference of said storage chamber A storage space is provided in each of the second load-side unit and the plurality of storage units, each of which includes a second load-side unit that is air-conditioned to a second temperature that is farther from the storage temperature of the stored object than the first temperature. A communication means that acquires detection values from a private room environment detection sensor that detects the temperature of the air and all the private room environment detection sensors, and outputs at least one of the acquired detection values as the storage room temperature. A refrigeration cycle control means for controlling the refrigeration cycle of the refrigerant circulating in the refrigerant circuit including the first load-side unit based on the storage chamber temperature and the storage chamber set temperature input from the communication means. The communication means includes a management terminal for communication connection with the communication means, and the communication means has coordinate information indicating the position of the storage unit and detection of the private room environment provided in the storage unit for each of the plurality of storage units. Environmental information including the detection value of the sensor is transmitted to the management terminal, and the management terminal stores a display unit for displaying the information and a management table for managing the stored items stored in the storage room. When a plurality of the environmental information is received from the communication means, the control unit includes the received plurality of environmental information in the management table and displays the received environmental information on the display unit .

Warehouse according to the present invention, a storage room, each having a plurality of storage portions storing storage products, and a front chamber containing space of the outer circumference of said storage chamber, said storage chamber, air conditioning to a first temperature A first load-side unit, a second load-side unit that air-conditions the anterior chamber to a second temperature that is farther from the storage temperature of the stored object than the first temperature, and the plurality of storage units. The private room environment detection sensor that detects the temperature of the air in the storage space and the detection values obtained from all the private room environment detection sensors provided in each of the above are obtained, and at least one of the acquired detection values is selected. Based on the communication means output as the storage room temperature, the storage room temperature input from the communication means, and the storage room set temperature, the refrigerating cycle of the refrigerant circulating in the refrigerant circuit including the first load side unit is performed. The refrigerating cycle control means for controlling and the management terminal for communication connection with the communication means are provided, and the communication means has coordinate information indicating the position of the storage unit and the storage unit for each of the plurality of storage units. Environmental information including the detection value of the private room environment detection sensor provided in the above is transmitted to the management terminal, and the management terminal manages a display unit for displaying the information and the stored items stored in the storage room. It has a storage unit for storing the management table to be used, and a control unit for including the received plurality of environmental information in the management table and displaying the received environmental information on the display unit when a plurality of the environmental information is received from the communication means. is there.

Next, the operation procedure of the air conditioning system of the second embodiment will be described. FIG. 15 is a sequence diagram showing an operating procedure of the air conditioning system shown in FIG. The plurality of private room environment detection sensors 36 transmit the detected value to the communication means 53 (step S201). The communication means 53 transmits a plurality of environmental information to the management terminal 70 (step S202). When the control unit 72 receives a plurality of environmental information from the air conditioner 200, the control unit 72 reflects the received plurality of environmental information in the management table stored in the storage unit 71, and updates the management table (step S203).

Claims (15)

A storage chamber for storing stored items is provided with a first load-side unit that air-conditions to a first temperature.
A second load-side unit that air-conditions the anterior chamber including the space around the storage chamber to a second temperature that is farther from the storage temperature of the stored object than the first temperature.
Air conditioning system with. The air conditioning system according to claim 1, wherein the first load-side unit sucks air from the anterior chamber and supplies heat-exchanged air to the storage chamber. The air conditioning system according to claim 1 or 2, wherein a storage unit provided inside the storage chamber has a means for taking in air from the storage chamber. The air conditioning system according to any one of claims 1 to 3, further comprising a discharge means for discharging air from a storage portion provided inside the storage chamber to the front chamber. A private room environment detection sensor that detects the temperature of the air in a plurality of storage units contained in the storage room, and
A communication means that acquires detection values from all the private room environment detection sensors and determines the storage room temperature using at least one of the acquired detection values.
A refrigeration cycle control means for controlling the refrigeration cycle of the refrigerant circulating in the refrigerant circuit including the first load-side unit based on the storage chamber temperature and the storage chamber set temperature notified from the communication means.
The air conditioning system according to any one of claims 1 to 4, further comprising. The private room environment detection sensor detects the humidity of the air in the plurality of storage portions, and detects the humidity of the air in the plurality of storage units.
The communication means acquires detection values from all the private room environment detection sensors, and determines the storage room humidity using at least one detection value among all the acquired detection values.
The air conditioning according to claim 5, wherein the refrigeration cycle control means controls the refrigeration cycle of the refrigerant circulating in the refrigerant circuit based on the storage room humidity and the storage room set humidity notified from the communication means. system. The load side heat exchanger and fan provided in the first load side unit, and
The compressor provided in the refrigerant circuit and
A bypass circuit that connects the refrigerant discharge port of the compressor and the load side heat exchanger,
Further, it has a flow path switching device for circulating the refrigerant discharged from the compressor via the bypass circuit to the load side heat exchanger during the defrosting operation.
The refrigeration cycle control means
During the defrosting operation, the rotation direction of the fan is controlled so as to suck air from the storage chamber and send it out to the front chamber, and the flow path switching device is controlled to load the refrigerant discharged from the compressor. The air conditioning system according to claim 5 or 6, which is distributed to a side heat exchanger. It has a management terminal that is connected to the communication means by communication.
The communication means transmits environmental information including coordinate information indicating the position of the storage unit and a detection value of the private room environment detection sensor provided in the storage unit to the management terminal for each of the plurality of storage units. ,
The management terminal is
A display unit that displays information and
A storage unit that stores a management table that manages stored items stored in the storage room,
The method according to any one of claims 5 to 7, further comprising a control unit that includes the received plurality of environmental information in the management table and displays the received environmental information on the display unit when the plurality of the environmental information is received from the communication means. The described air conditioning system. It further has a server that is connected to the communication means or the management terminal via a network and stores the management table.
The server
The air conditioning system according to claim 8, wherein when an information request signal requesting the management table is received from the information processing terminal via the network, the management table is transmitted to the information processing terminal. A storage room for storing stored items and
The front room including the space around the storage room and the front room
The storage chamber is air-conditioned with a first temperature with a first load-side unit.
A second load-side unit that air-conditions the anterior chamber to a second temperature that is farther from the storage temperature of the stored object than the first temperature.
Warehouse with. The warehouse according to claim 10, wherein a passage through which a worker or a moving body passes is provided in the anterior chamber. It has a storage unit provided inside the storage room, and has a storage unit.
The warehouse according to claim 10 or 11, wherein the storage unit has an intake port for taking in air from the storage room and an discharge port for discharging air to the front chamber. The warehouse according to claim 12, wherein a plurality of the storage units are provided inside the storage room. The warehouse according to claim 13, wherein a private room environment detection sensor for detecting the temperature of air is provided in each of the plurality of storage units. The invention according to any one of claims 12 to 14, wherein the intake means provided at the intake port for opening and closing the intake port, or the discharge means provided at the discharge port for opening and closing the discharge port is provided. Warehouse.

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