JP2018091547A - Control unit for air supply device and ventilation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control unit for air supply device capable of further reducing the possibility of dew condensation generating on a door of a show case than before while reducing a cooling load of the show case, and to provide a ventilation system.SOLUTION: A control unit 200 for an air supply device 400 includes: an acquisition device 210 for cooling articles stored in a storage 101, and for acquiring information related to generation of dew condensation on a surface of a show case 100 including a door 102 for opening/closing an opening of the storage 101; and a controller 220 for increasing an output from the air supply device 400 out of an air exhaust device 300 and the air supply device 400 provided in a kitchen room having a space continued to an indoor space in which the show case 100 is provided, when it is determined that the possibility of dew condensation generating on the surface of the door 102 of the show case 100 has increased from the information acquired in the acquisition device 210.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to an air supply controller and a ventilation system.

  Patent Document 1 discloses a showcase door body in which a dew-proof heater is provided on the surface of a transparent glass plate in a refrigerated or refrigerated showcase to prevent the occurrence of condensation on the surface of the transparent glass plate.

JP 2012-13304 A

  However, in the technique of Patent Document 1, the cooling load of the showcase increases due to the heat of the dew proof heater.

  In view of the above circumstances, an exemplary embodiment provides a control device and a ventilation system for an air supply device that can reduce the possibility of condensation on the door of the showcase while reducing the cooling load of the showcase as compared with the conventional embodiment. I will provide a.

  An air supply control device according to an aspect of the present disclosure provides information related to occurrence of dew condensation on a surface of a showcase that includes a door that cools a product stored in a storage and opens and closes an opening of the storage. When it is determined that the possibility of condensation on the surface of the door of the showcase has increased from the information acquired by the acquirer and the information acquired by the acquirer, it is continuous with the indoor space in which the showcase is provided. A controller for increasing the output of the air supply unit out of the exhaust unit and the air supply unit provided in the kitchen room having a space.

  These general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM. The system, method, integrated circuit, computer program And any combination of recording media.

  By using the air supply control device according to an aspect of the present disclosure, it is possible to reduce the possibility of condensation on the door of the showcase while reducing the cooling load of the showcase as compared to the conventional case.

FIG. 1 is an external perspective view showing an installation example of an exhaust device and an air supply device and a showcase provided in the ventilation system according to the embodiment. Drawing 2 is a top view showing an example of installation of each component of a ventilation system concerning an embodiment, and a showcase. FIG. 3 is a block diagram illustrating an example of a configuration of the ventilation system according to the embodiment. FIG. 4 is a flowchart illustrating an example of the operation of the control device. FIG. 5 is a diagram for explaining the effect of the output increase control in the ventilation system according to the embodiment.

(Knowledge that became the basis of the present invention)
The inventor has found that the following problems occur with respect to the door for a showcase described in the “Background Art” column.

  In the door for a showcase described in Patent Document 1, since the generation of condensation is prevented by warming the transparent glass plate with the dew-proof heater, the dew-proof heater becomes a load for the cooling action of the showcase. For this reason, there existed a subject that the energy consumption of a showcase will increase.

  Thus, in the door for a showcase described in Patent Document 1, the occurrence of condensation on the door of the showcase has not been effectively suppressed.

  Therefore, a control device for an air supply device according to an aspect of the present disclosure relates to generation of condensation on a surface of a showcase that includes a door that cools a product stored in a storage and opens and closes an opening of the storage. When it is determined that there is an increase in the possibility of dew condensation occurring on the surface of the door of the showcase from the information acquired by the acquirer, and the indoor space provided with the showcase, A controller for increasing the output of the air supply unit out of the exhaust unit and the air supply unit provided in the kitchen room having a continuous space.

  For this reason, since the inflow of the external air to the space where the showcase is arranged is reduced, the possibility that condensation occurs on the surface of the door of the showcase is reduced. In addition, the above control device eliminates the need for providing a conventional dew-proof heater or reduces the heating amount of the dew-proof heater to suppress dew condensation. The possibility of condensation on the surface of the case door can be reduced.

  Here, it can be said that the information related to the occurrence of condensation on the surface of the door of the showcase is, for example, information indicating the possibility of the occurrence of condensation on the surface of the door of the showcase.

  Further, the controller may increase the output of the air supply device as the possibility that the dew condensation indicated by the information acquired by the acquisition device is generated is high.

  According to this, inflow of the outside air to the space where the showcase is arranged can be reduced as the possibility that condensation occurs is higher. Therefore, it is possible to effectively suppress the occurrence of condensation on the surface of the showcase door.

  In addition, when the controller determines that the possibility that condensation occurs on the surface of the door of the showcase from the information acquired by the acquirer after increasing the output of the air supply device, The output of the air supply device may be reduced.

  For this reason, the effect of reducing the odor of the kitchen room from flowing into the space where the showcase is arranged can be restored.

  In addition, when the controller determines from the information acquired by the acquirer that the possibility that condensation occurs on the surface of the door of the showcase has increased in the first period, the output of the air supply device Even if it is determined that the possibility that condensation occurs on the surface of the door of the showcase from the information acquired by the acquisition device at a second time different from the first time, It is not necessary to increase the output of the air supply device.

  For this reason, depending on the time, it is possible to preferentially reduce the odor of the kitchen room from flowing into the sales floor without increasing the output of the air supply device.

  The second time may be a time when the odor level flowing into the room in which the showcase is provided is higher than the first time.

  For this reason, when the odor level is high, it is possible to preferentially reduce the odor of the kitchen room from flowing into the sales floor without increasing the output of the air supply device.

  The second time may be a time when the outside air temperature is higher than the first time.

  For this reason, since supply of the outside air to the kitchen room by the air supply device can be suppressed at a time when the outside air temperature is high, the temperature of the kitchen room becomes high and an unpleasant environment can be reduced.

  The second time may be a time when the outside air temperature is lower than the first time.

  For this reason, since the supply of the outside air to the kitchen room by the air supply device can be suppressed at the time when the outside air temperature is low, the temperature of the kitchen room can be lowered and an uncomfortable environment can be reduced.

  The information may be information indicating a relative humidity of air outside the door of the showcase.

  The information may be information indicating a temperature difference between the surface temperature of the showcase door and the temperature of the air outside the showcase door.

  These general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM. The system, method, integrated circuit, computer program Alternatively, it may be realized by any combination of recording media.

  Hereinafter, an air supply controller and a ventilation system according to an aspect of the present invention will be specifically described with reference to the drawings.

  Note that each of the embodiments described below shows a specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

(Embodiment)
[1. Constitution]
FIG. 1 is an external perspective view showing an installation example of an exhaust device and an air supply device and a showcase provided in the ventilation system according to the embodiment. Specifically, (a) in FIG. 1 is an external view showing an installation example of an exhaust device 300 and an air supply device 400 arranged in a kitchen room in the store, and (b) in FIG. It is an external view which shows the example of installation of the showcase 100 arrange | positioned at this sales floor. Drawing 2 is a top view showing an example of installation of each component of a ventilation system concerning an embodiment, and a showcase. FIG. 3 is a block diagram illustrating an example of a configuration of the ventilation system according to the embodiment. Specifically, in FIGS. 1 to 3, a showcase 100, a dew condensation detector 110, a control device 200, an exhaust device 300, an air supply device 400, and a cooking device 500 are shown. For example, the ventilation system 1 includes a control device 200, an exhaust device 300, and an air supply device 400 among these components.

  The ventilation system 1 is a system for suppressing the occurrence of dew condensation on the surface of the door 102 provided in the showcase 100 provided in the store in the store. The store is, for example, a convenience store or a supermarket. As shown in FIGS. 1 and 2, the showcase 100 and the dew condensation detector 110 are arranged in a space in the store floor of the store, and the exhaust device 300 and the air supply device 400 are arranged in the kitchen room of the store. ing. As shown in FIG. 2, the kitchen room has a space that is continuous with the space in the sales floor where the showcase 100 is provided. In FIG. 2, the control device 200 is disposed in the sales floor, but may not be disposed in the sales floor.

  The showcase 100 includes a storage 101 that stores products, and a door 102 that opens and closes an opening provided in the storage 101. The showcase 100 cools the product stored in the storage 101 by cooling the space in the storage 101. In the storage 101, for example, the internal space has a substantially rectangular parallelepiped shape, and a plurality of shelves are arranged.

  The door 102 is made of, for example, a rectangular transparent plate, and one side extending in the vertical direction is rotatably supported. The transparent plate is made of a material such as glass or acrylic.

  The door 102 has specific parts such as a part that is rotatably supported, a part to which a handle is attached, a part to which a fastener (magnet, latch, etc.) for holding the door closed is attached. Other members may not be attached other than the part. Since the door 102 having this configuration is a configuration in which an opaque member is not attached to the entire four sides of the transparent plate, it can be configured so as not to block human eyes as much as possible even at the end of the door. The visibility of products arranged inside the showcase can be improved.

  The door 102 is a door-like door that is rotatably supported. However, the door 102 may be a sliding door that opens and closes the opening of the storage 101 by sliding two opposing sides. It may be a folding door type door that opens and closes the opening of the storage 101 by bending the center. The door 102 may be a front plate disposed on the front surface of the drawer.

  The showcase 100 is, for example, a refrigerated showcase or a freezer showcase.

  The dew condensation detector 110 detects an index related to dew condensation on the surface of the door 102. The condensation detector 110 transmits information indicating the detected index to the control device 200 as information related to the occurrence of condensation on the surface of the door 102. The dew condensation detector 110 includes, for example, a humidity sensor that is disposed on the outer surface of the door 102 and detects the relative humidity of the atmosphere at the disposed position (that is, air outside the door 102). The dew condensation detector 110 may not be disposed on the outer surface of the door 102 as long as it is disposed at a position where the relative humidity in the space near the showcase 100 can be detected. It may be arranged.

  The control device 200 is a device that controls the operations of the exhaust device 300 and the air supply device 400, and includes an acquisition device 210 and a controller 220.

  The acquiring unit 210 acquires information related to the occurrence of condensation on the surface of the door 102 of the showcase 100 (hereinafter referred to as “condensation information”). Specifically, the acquisition unit 210 acquires information indicating the relative humidity detected by the dew condensation detector 110 (hereinafter referred to as “humidity information”) from the dew condensation detector 110 as dew condensation information. The acquisition unit 210 is realized by, for example, a communication interface corresponding to the output format of the humidity sensor, a processor that executes a program, and a memory that stores the program. Further, the acquisition unit 210 is not limited to the above configuration, and may be realized by the communication interface and a dedicated circuit.

  When the controller 220 determines that the possibility of condensation on the surface of the door 102 has increased from the condensation information acquired by the acquirer 210, the controller 220 supplies the air from the exhaust 300 and the air supply 400 provided in the kitchen room. An output increase control for increasing the output of the air vessel 400 is performed. Specifically, if the relative humidity Hsc indicated by the humidity information acquired by the acquisition unit 210 exceeds the first threshold value Hth, the controller 220 has increased the possibility that condensation will occur on the surface of the door 102. Is determined. For example, the controller 220 outputs a control signal to the air supply device 400 to cause the air supply device 400 to perform output increase control. That is, when the value of the dew condensation information exceeds a predetermined threshold, the controller 220 causes the air supply device 400 to perform output increase control. In other words, when the value of information indicating the possibility of condensation on the surface of the door 102 exceeds a predetermined threshold, the controller 220 causes the air supply device 400 to perform output increase control.

  Further, the controller 220 may perform output increase control that increases the output of the air supply device 400 as the possibility that the condensation indicated by the condensation information acquired by the acquisition device 210 is generated is high. Specifically, the controller 220 increases the air volume of the air supply device 400 as the relative humidity indicated by the humidity information acquired by the acquisition device 210 is higher. That is, the controller 220 may increase the output of the air supply device 400 as the value of the dew condensation information is higher. In other words, the controller 220 may increase the output of the air supply device 400 as the value of information indicating the possibility of condensation on the surface of the door 102 is higher.

  In addition, when the controller 220 increases the output of the air supply device 400 and determines that the possibility that condensation occurs on the surface of the door of the showcase 100 from the condensation information acquired by the acquisition device 210 has decreased, The output of the air supply device 400 may be reduced. Specifically, the controller 220 reduces the air volume of the air supply device 400 when the relative humidity Hsc indicated by the humidity information acquired by the acquiring device 210 is equal to or lower than the first threshold value Hth. For example, the controller 220 returns the air volume of the air supply device 400 to the air volume before the output increase control. That is, the controller 220 may decrease the output of the air supply device 400 when the value of the dew condensation information is equal to or less than a predetermined threshold value. In other words, the controller 220 may decrease the output of the air supply device 400 when the value of information indicating the possibility of condensation on the surface of the door 102 is equal to or less than a predetermined threshold value.

  The controller 220 stores, for example, a communication interface for transmitting a control signal to at least the air supply device 400 of the exhaust device 300 and the air supply device 400, a processor that executes the program, and the program. It is realized by the memory. The controller 220 is not limited to the configuration described above, and may be realized by the communication interface and a dedicated circuit.

  The exhaust device 300 is disposed in the kitchen room and discharges the air in the kitchen room to the outside (outdoors) of the kitchen room. Specifically, the exhaust device 300 is connected to the kitchen room side of the exhaust duct that connects the outdoor room and the kitchen room, and blows the air in the kitchen room toward the outside, thereby bringing the air in the kitchen room to the outside. Discharge. The exhaust device 300 exhausts the air in the kitchen chamber to the outside of the kitchen chamber when cooking is performed at least in the kitchen chamber. For this reason, the kitchen chamber is in a negative pressure state. In the present embodiment, exhaust device 300 may be controlled with a fixed air volume. Thereby, it is suppressed that air flows toward a sales floor from a kitchen room, and it is reduced that the odor by cooking flows into a sales floor. The exhaust device 300 is realized by, for example, a fan and a motor that rotates the fan.

  The air supply device 400 supplies outside air into the kitchen room. Specifically, the air supply device 400 is connected to an air supply duct that connects the outside and the kitchen room, and supplies the outside air to the kitchen room by blowing the outside air toward the kitchen room. The air supply device 400 promotes ventilation of the kitchen room by supplying outside air into the kitchen room. The air supply device 400 is realized by, for example, a fan and a motor that rotates the fan.

  In the present embodiment, air supply device 400 is controlled with a variable air volume in accordance with a control signal from control device 200. That is, when the air supply device 400 receives a control signal for increasing the output from the control device 200, the air supply device 400 increases the air volume by increasing the rotational speed of the motor. On the other hand, when the air supply device 400 receives a control signal for reducing the output from the control device 200, the air supply device 400 reduces the air volume by reducing the rotational speed of the motor.

  In addition, the air supply device 400 is controlled with an air volume smaller than the air volume of the exhaust device 300 in order to maintain the kitchen chamber in a negative pressure state. That is, the air supply device 400 is controlled with a variable air volume in a range smaller than the air volume of the exhaust device 300.

  The cooking device 500 is a device for cooking food, and specifically, a device for cooking food by heating. The cooking device 500 is, for example, a fryer as shown in FIG. The cooker 500 is not limited to a fryer, and may be a gas stove, an IH cooking heater, an oven, a microwave oven, a toaster, or the like.

[2. Operation]
Next, operation | movement of the control apparatus 200 of the ventilation system 1 is demonstrated. FIG. 4 is a flowchart illustrating an example of the operation of the control device.

  First, the acquisition unit 210 of the control device 200 acquires humidity information indicating the relative humidity Hsc around the showcase 100 detected by the dew condensation detector 110 from the dew condensation detector 110 (S101).

  Next, the controller 220 of the control device 200 determines whether or not the relative humidity Hsc indicated by the humidity information acquired by the acquiring unit 210 exceeds the first threshold value Hth (S102).

  If the controller 220 determines that the relative humidity Hsc exceeds the first threshold value Hth (Yes in S102), the output of the air supply device 400 out of the air supply device 300 and the air supply device 400 provided in the kitchen room. Is increased (S103). Specifically, the controller 220 outputs a control signal for increasing the output of the air supply device 400 to the air supply device 400.

  The acquisition unit 210 acquires again the humidity information indicating the relative humidity Hsc around the showcase 100 detected by the dew condensation detector 110 from the dew condensation detector 110 (S104).

  The controller 220 determines whether or not the relative humidity Hsc indicated by the humidity information acquired by the acquisition unit 210 is equal to or less than the first threshold value Hth (S105).

  If the controller 220 determines that the relative humidity Hsc indicated by the humidity information acquired by the acquirer 210 is equal to or lower than the first threshold Hth (Yes in S105), the controller 220 decreases the output of the air supply device 400 (S106). . Specifically, the controller 220 outputs a control signal for reducing the output of the air supply device 400 to the air supply device 400.

  If it is determined that the relative humidity Hsc indicated by the humidity information acquired by the acquisition unit 210 exceeds the first threshold value Hth (No in S105), the controller 220 repeats the process of step S104.

  When the controller 220 determines that the relative humidity Hsc is equal to or lower than the first threshold value Hth (No in S102) or decreases the output of the air supply device 400 (S106), the controller 220 returns to the process of step S101.

  Note that the processing of steps S104 to S106 is not necessarily performed.

[3. Effect etc.]
According to the control device 200 according to the present embodiment, when it is determined that the possibility that condensation occurs on the surface of the door 102 of the showcase 100 has increased, the output of the air supply device 400 is increased. For this reason, since the inflow of the external air to the space (sales floor) where the showcase 100 is arranged is reduced, the possibility that condensation occurs on the surface of the door 102 is reduced. In addition, the control device 200 does not require a conventional dew-proof heater or reduces the heating amount of the dew-proof heater for suppressing dew condensation. The possibility of condensation on the surface of the door 102 of the showcase 100 can be reduced.

  The effect which can suppress the inflow of the external air to the space (sales) where the showcase 100 is arranged will be described in detail with reference to FIG.

  FIG. 5 is a diagram for explaining the effect of the output increase control in the ventilation system according to the embodiment. FIG. 5A is a diagram showing the flow of air in the kitchen room and the sales floor before the output increase control is performed, and FIG. 5B is the diagram of the kitchen room after the output increase control is performed. It is a figure which shows the flow of the air of a sales floor.

  As shown in FIG. 5 (a), before the output increase control is performed, the air volume of the air supply device 400 is sufficiently small with respect to the air volume of the exhaust device 300, so the degree of negative pressure in the kitchen room is large. . For this reason, a large amount of air flows into the kitchen room from the sales floor, and the flow of air from the kitchen room toward the sales floor is suppressed, and the odor of the kitchen room can be reduced from flowing into the sales floor. On the other hand, since the degree of negative pressure in the kitchen room is large, a lot of outside air flows into the sales floor where the showcase 100 is provided from the entrance to the sales floor from the outside. Therefore, when the outside air contains a lot of moisture, there is a high possibility that condensation occurs on the surface of the door 102 of the showcase 100.

  When the output increase control is performed, as shown in FIG. 5B, the air volume of the air supply device 400 is increased, so that the difference between the air volume of the exhaust device 300 and the air volume of the air supply device 400 is reduced. For this reason, compared with before output increase control, the degree of the negative pressure of a kitchen room becomes small, and the quantity of the air which flows into a kitchen room from a sales floor decreases. Thereby, in the sales floor where the showcase 100 is provided, it is possible to reduce the inflow of outside air from the entrance to the sales floor from the outside as compared to before the output increase control. Thus, the possibility of condensation on the surface of the door 102 of the showcase 100 can be reduced.

  When the output increase control is performed, the effect of reducing the odor of the kitchen room from flowing into the sales floor is reduced. However, in the ventilation system 1 of the present embodiment, the output is intentionally reduced in order to reduce the possibility of condensation. Increase control is performed. However, in the ventilation system 1, the air volume of the supply air 400 is increased in a range exceeding the air volume of the exhaust device 300 by performing control to increase the air volume of the air supply device 400 in a range smaller than the air volume of the exhaust device 300. Compared to the case, the possibility that condensation occurs on the surface of the door 102 of the showcase 100 can be reduced while reducing the amount of odor in the kitchen room flowing into the sales floor.

  Further, in the control device 200 according to the present embodiment, the controller 220 increases the output of the air supply device 400 as the possibility that the dew condensation indicated by the dew condensation information acquired by the acquisition device 210 is generated is high. That is, the higher the possibility that condensation occurs, the lower the inflow of outside air to the sales floor. Therefore, it is possible to effectively suppress the occurrence of condensation on the surface of the door 102.

  Further, in the control device 200 according to the present embodiment, the controller 220 increases the output of the air supply device 400 and then condenses on the surface of the door 102 of the showcase 100 from the condensation information acquired by the acquisition device 210. If it is determined that the possibility of occurrence of a drop has occurred, the output of the air supply device 400 is reduced. For this reason, the effect of reducing the odor of the kitchen room from flowing into the sales floor can be restored.

[4. Modified example]
[4-1. Modification 1]
In the embodiment described above, when the controller 220 determines that the possibility of condensation on the surface of the door 102 has increased, the controller 220 of the air supply device 400 of the air supply device 400 and the air supply device 400 provided in the kitchen room. Although the output is increased, the control for increasing the output of the air supply device 400 may not be performed depending on the time.

  That is, when the controller 220 determines that the possibility of condensation on the surface of the door 102 of the showcase 100 has increased from the condensation information acquired by the acquirer 210 in the first period, the controller 220 Even if the output is increased and it is determined that the possibility of condensation on the surface of the door 102 of the showcase 100 has increased from the condensation information acquired by the acquisition device 210 at a second time different from the first time. The output of the air supply device 400 may not be increased. Specifically, the controller 220 increases the air volume of the air supply device 400 if the relative humidity Hsc indicated by the humidity information acquired by the acquiring device 210 exceeds the first threshold value Hth at the first time. In the second period, even if the relative humidity Hsc indicated by the humidity information acquired by the acquisition unit 210 exceeds the first threshold Hth, the air volume of the air supply device 400 is not increased.

  For example, the second period may be a period when the odor level flowing into the room in which the showcase 100 is provided is higher than the first period. The period when the odor level is high may be a period when the odor level detected by the odor sensor is higher than the predetermined level, or the period when the odor level is higher than the predetermined level is specified in advance using the odor sensor and specified. It may be time. That is, since the output increase control is not performed at a time when the odor level is high, it is possible to reduce the priority of the odor of the kitchen room flowing out to the sales floor.

  For example, the second time may be a time when the outside air temperature is higher than that of the first time. The first period is, for example, an intermediate period including spring and autumn, and the second period is, for example, summer. For this reason, since the supply of outside air to the kitchen room by the air supply device 400 can be suppressed at a time when the outside air temperature is high, for example, in summer, the temperature of the kitchen room becomes high and an uncomfortable environment can be reduced. .

  For example, the second time may be a time when the outside air temperature is lower than that of the first time. The first period is, for example, an intermediate period including spring and autumn, and the second period is, for example, winter. For this reason, since the supply of the outside air to the kitchen room by the air supply device 400 can be suppressed at a time when the outside air temperature is low, such as in winter, for example, the temperature of the kitchen room can be reduced and an uncomfortable environment can be reduced. .

[4-2. Modification 2]
In the above embodiment, the controller 220 determines whether or not there is a high possibility of condensation on the surface of the door 102 of the showcase 100 according to the relative humidity of the air around the showcase 100. The relative humidity is not limited to the dew condensation information.

  For example, when an air curtain is generated by cool air at the opening of the showcase 100, the controller 220 uses the relative humidity at the air curtain inlet as the dew condensation information on the surface of the door 102 of the showcase 100. It may be determined whether or not condensation is likely to occur. In this case, the dew condensation detector 110 is realized by a humidity sensor arranged at the suction port of the air curtain.

  For example, the controller 220 may generate condensation on the surface of the door 102 of the showcase 100 using the temperature difference between the temperature of the internal space of the showcase 100 and the temperature of the external space of the showcase 100 as the condensation information. It may be determined whether or not the property is high.

  In this case, the dew condensation detector 110 is realized by a first temperature sensor that detects the temperature of the internal space of the showcase 100 and a second temperature sensor that detects the temperature of the external space of the showcase 100. Note that the temperature of the external space of the door 102 of the showcase 100 (that is, the temperature of the sales floor) is highly correlated with the outside air temperature, and thus the door is obtained by acquiring information indicating the outside air temperature from an external device (such as a server). The temperature of the external space 102 may be detected.

  Further, for example, is the controller 220 likely to cause condensation on the surface of the door 102 of the showcase 100 by using the detection result of the condensation sensor without using the relative humidity and the temperature difference as the condensation information? It may be determined whether or not. That is, the controller 220 determines whether or not there is a high possibility that condensation will occur on the surface of the door 102 of the showcase 100 when the detection level of the condensation sensor exceeds a predetermined level. In this case, the dew condensation detector 110 is realized by a dew condensation sensor.

  Further, for example, the controller 220 may determine whether or not there is a high possibility that condensation occurs on the surface of the door 102 of the showcase 100 using the outside air temperature as the condensation information. That is, the controller 220 determines whether or not there is a high possibility that condensation will occur on the surface of the door 102 of the showcase 100 when the outside air temperature exceeds a predetermined temperature. In this case, the dew condensation detector 110 is realized by a temperature sensor provided outdoors or a communication device that acquires information indicating the outside air temperature from an external device (server).

  Further, for example, the controller 220 may determine whether or not there is a high possibility of condensation on the surface of the door 102 of the showcase 100 using the relative humidity of the outside air as the condensation information. That is, the controller 220 determines whether or not condensation is likely to occur on the surface of the door 102 of the showcase 100 when the humidity of the outside air exceeds a predetermined humidity. In this case, the dew condensation detector 110 is realized by a humidity sensor provided outdoors or a communication device that acquires information indicating the relative humidity of the outside air from an external device (server).

  Further, for example, the controller 220 determines whether or not there is a high possibility of condensation on the surface of the door 102 of the showcase 100 using the number of opening / closing of the store door per unit time as the condensation information. Also good. That is, the controller 220 determines that there is a high possibility that condensation will occur on the surface of the door 102 of the showcase 100 when the number of doors opened and closed per unit time exceeds a predetermined number. In this case, the dew condensation detector 110 is realized by a counter that counts the opening and closing of the door.

[4-3. Modification 3]
In the above-described embodiment and its modifications 1 and 2, the controller 220 uses the average value of a plurality of values detected during a predetermined period in which the dew condensation detector 110 is continuous, to the surface of the door 102 of the showcase 100. It may be determined whether or not there is a high possibility that condensation will occur.

  As mentioned above, although control apparatus 200 of air supply device 400 concerning one or a plurality of modes of the present invention was explained based on an embodiment, the present invention is not limited to this embodiment. Unless it deviates from the gist of the present invention, one or more of the present invention may be applied to various modifications that can be conceived by those skilled in the art, or forms constructed by combining components in different embodiments. It may be included within the scope of the embodiments.

  The present disclosure is useful as a control device for an air supply device that can reduce the possibility of condensation on the door of the showcase while reducing the cooling load of the showcase as compared with the conventional one.

DESCRIPTION OF SYMBOLS 1 Ventilation system 100 Showcase 101 Storage 102 Door 110 Condensation detector 200 Control apparatus 210 Acquisition device 220 Controller 300 Exhaust device 400 Air supply device 500 Cooker

Claims (10)

An acquisition unit that cools a product stored in a storage and acquires information related to occurrence of condensation on a surface of a showcase including a door that opens and closes an opening of the storage;
When it is determined from the information acquired by the acquisition unit that the possibility of condensation on the surface of the door of the showcase has increased, a kitchen having a space that is continuous with the indoor space in which the showcase is provided An air supply control device comprising: a controller for increasing an output of the air supply device among an exhaust device and an air supply device provided in the chamber.   The control device of the air supply device according to claim 1, wherein the controller increases the output of the air supply device as the possibility that the condensation indicated by the information acquired by the acquisition device is generated is high.   The controller, after increasing the output of the air supply device, determines that the possibility of condensation on the surface of the showcase door has decreased from the information acquired by the acquisition device. The air supply controller according to claim 1 or 2, wherein the output of the air supply is reduced.   When the controller determines that the possibility of dew condensation on the surface of the showcase door has increased from the information acquired by the acquirer in the first period, the output of the air supply device is increased. Even if it is determined that the possibility of dew condensation on the surface of the door of the showcase has increased from the information acquired by the acquirer at a second time different from the first time, the supply The control apparatus of the air supply of any one of Claims 1-3 which does not increase the output of an air supply.   5. The air supply controller according to claim 4, wherein the second time is a time when the odor level flowing into the room in which the showcase is provided is higher than that of the first time.   The control device for an air supply device according to claim 4, wherein the second time is a time when the outside air temperature is higher than the first time.   The control device for an air supply device according to claim 4, wherein the second time is a time when the outside air temperature is lower than that of the first time.   The air supply controller according to any one of claims 1 to 7, wherein the information is information indicating a relative humidity of air outside the door of the showcase.   The air supply according to any one of claims 1 to 7, wherein the information is information indicating a temperature difference between a surface temperature of the showcase door and a temperature of air outside the showcase door. Control device. An exhaust device and an air supply device provided in the kitchen room;
A ventilation system comprising the control device according to claim 1.

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