JP2018173241A - Method for controlling ventilator and ventilation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for controlling a ventilator that can effectively reduce energy consumption required for ventilation more than before, and to provide a ventilation system.SOLUTION: A method for controlling a ventilator includes a step (a) that, when an air inflow amount to a kitchen room from an area in a store different from the kitchen room in the store increases, lowers output of a first ventilator 100 installed in the area and including a heat exchange 110 for exchanging heat between exhaust air from the area and supply air from the outside of the store.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to a ventilator control method and a ventilation system.

  Patent Document 1 discloses that in a ventilation system using a total heat exchange element, the first type ventilation that passes through the total heat exchange element and the first that does not pass through the total heat exchange element according to the determination based on the outside air temperature and the room temperature. A ventilation system that switches to one of three types of ventilation is disclosed.

JP 2011-52918 A

  However, the technique of Patent Document 1 cannot effectively reduce the energy consumed for ventilation.

  In view of the above circumstances, the exemplary embodiment provides a ventilator control method and a ventilation system that can effectively reduce the energy consumed for ventilation compared to the related art.

  The ventilator control method according to an aspect of the present disclosure is provided in the area when an inflow amount of air from the area in the store to the kitchen room is different from the kitchen room in the store. (A) which lowers the output of a 1st ventilator provided with the heat exchanger which heat-exchanges the exhaust_gas | exhaustion of this, and the supply air from the said store outside.

  These general or specific aspects may be realized by a system, a control device, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM. The system, the control device, the integrated circuit, You may implement | achieve with arbitrary combinations of a computer program and a recording medium.

  By using a ventilator control method or the like according to one embodiment of the present disclosure, it is possible to effectively reduce energy consumption for ventilation compared to the related art.

Drawing 1 is an appearance perspective view showing the example of installation of the ventilation system concerning an 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 graph for explaining the relationship between the change in the outside air temperature and the presence or absence of the energy saving effect of the total heat exchanger. FIG. 5A is a graph showing the relationship between the outside air temperature and the average power consumption when the amount of air flowing into the kitchen room from the area in the store is large. FIG. 5B is a graph showing the relationship between the outside air temperature and the average power consumption when the amount of air flowing from the area in the store into the kitchen room is small. FIG. 6 is a flowchart illustrating an example of the operation of the controller according to the embodiment. FIG. 7 is a flowchart illustrating another example of the operation of the controller according to the embodiment. FIG. 8 is a block diagram illustrating an example of a configuration of a ventilation system according to the first modification of the embodiment. FIG. 9 is a flowchart illustrating an example of the operation of the controller according to the first modification of the embodiment.

(Knowledge that became the basis of the present invention)
The present inventor has found that the following problems occur with respect to the ventilation system described in the “Background Art” section.

  In the ventilation system described in Patent Literature 1, when the ventilation load entering the room is large based on the outside air temperature and the room temperature, the first type ventilation for introducing the outside air into the total heat exchange element is performed, and the ventilation load When the size of is small, the third type ventilation is performed without introducing outside air into the total heat exchange element. Thus, in the ventilation system of patent document 1, when the magnitude | size of ventilation load is small, the electric energy consumed for ventilation ventilation is reduced by not introducing outside air into a total heat exchange element.

  However, in the above ventilation system, there is a problem that the energy consumed for ventilation cannot be effectively reduced when the ventilation load is large. Specifically, when the ventilation system is arranged in a store having a kitchen room in the room, in such a store, the ventilator arranged in the kitchen room is operated to be different from the kitchen room in the store. Air flows from the area to the kitchen room. On the other hand, the area is supplied with air supply that is heat-exchanged with the exhaust air by a heat exchanger of a ventilator provided in the ventilation system.

  However, when the amount of air flowing into the kitchen room from the area increases, the air supplied by the ventilation system flows to the kitchen room. In addition to the increase in the amount of air flowing from the area into the kitchen room, in addition to the air supply from the ventilation system, the outside air is separated into the area from the gap between the walls, windows, doors, etc. Is aired. That is, by the operation of the ventilator in the kitchen room, outside air that has not been processed by the heat exchanger and has a large load on the air conditioning process flows. For this reason, even if it operates the ventilator which heat-exchanges exhaust air and supply air with a heat exchanger, the said ventilator may not be able to reduce the load of the external air supplied effectively. That is, there is a problem that the ventilator is operated even when the load of outside air cannot be effectively reduced.

  As described above, in the ventilation system described in Patent Document 1, the energy consumed for ventilation cannot be effectively reduced.

  Therefore, the ventilator control method according to one aspect of the present disclosure is provided in the area when the inflow amount of air from the area in the store to the kitchen room is different from the kitchen room in the store, A step (a) of reducing the output of the first ventilator including a heat exchanger for exchanging heat between the exhaust from the area and the supply air from outside the store;

  For this reason, the energy consumption by a 1st ventilator can be reduced effectively.

  Moreover, after the said step (a), when the inflow amount of the air from the said area to the said kitchen room falls, the step (b) which increases the output of a said 1st ventilator may be provided.

  For this reason, the energy consumption concerning the air conditioner in a store can be effectively reduced by operating the 1st ventilator.

  In addition, when the number of doors opened and closed per predetermined period from the outside of the store to the inside of the store is a second time less than the first time, the output of the first ventilator at the first time The amount of decrease in the output of the first ventilator may be made smaller than the amount of decrease.

  According to this, the amount of decrease in the output of the first ventilator is adjusted according to the number of doors opened and closed per predetermined period. For this reason, the energy consumption by the 1st ventilator and the energy consumption concerning the air conditioner in a shop can be reduced effectively.

  Moreover, when the outflow amount of the air in the area to the outside of the store increases via the second ventilator provided in the area, the output of the first ventilator may be reduced.

  For this reason, the energy consumption by a 1st ventilator can be reduced effectively.

  Moreover, you may provide the step (d) which increases the output of the 2nd ventilator provided in the said area, if the output of the said 1st ventilator is reduced.

  For this reason, the reduction of the ventilation amount between an area and the outdoor can be suppressed.

  These general or specific aspects may be realized by a system, a control device, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM. The system, the control device, the integrated circuit, You may implement | achieve with arbitrary combinations of a computer program and a recording medium.

  Hereinafter, a ventilator control method and a ventilation system according to one embodiment 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]
Drawing 1 is an appearance perspective view showing the example of installation of the ventilation system concerning an embodiment. Specifically, FIG. 1A is an external view showing an installation example of a kitchen ventilator 200 provided in a kitchen room in a store. FIG. 1B is an external view showing an installation example of the first ventilator 100, the second ventilator 300, and the showcase 500 arranged in an area in the store. 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, the first ventilator 100, the kitchen ventilator 200, the second ventilator 300, the controller 400, the showcase 500, the door 600, the cooker 700, and the air conditioner 800 is shown. For example, the ventilation system 1 includes a first ventilator 100, a kitchen ventilator 200, and a controller 400 among these components. Note that the ventilation system 1 may further include a second ventilator 300.

  The ventilation system 1 is a system for reducing energy consumption required for ventilation by the first ventilator 100 provided in an area in the store. The store is, for example, a convenience store or a supermarket.

  As shown in FIGS. 1 and 2, the space in the store has a kitchen room and an area different from the kitchen room. The area is, for example, a store in the store. The kitchen room has a space that is continuous with the space in the area. The first ventilator 100, the second ventilator 300, the showcase 500, and the air conditioner 800 are provided in the area. The kitchen ventilator 200 is provided in the kitchen room. The controller 400 may be provided in the area or may not be provided in the area.

  The first ventilator 100 is provided in an area, and includes a heat exchanger 110 that exchanges heat between exhaust from the area and supply air from outside the store. The first ventilator 100 has a first path through which the supplied air passes and a second path through which the exhausted air passes, and passes through the first path and the second path. The air is heat exchanged with each other in the heat exchanger 110. Specifically, the first route is a route in which outside air (OA) taken from outside the store such as outdoors passes through the heat exchanger 110 and is supplied from the air supply port 130 as air supply (SA) into the area. It is. The second route is a route in which the atmosphere (RA) taken from the atmosphere port 120 in the area passes through the heat exchanger 110 and is discharged as exhaust (EA) outside the store such as outdoors. The first ventilator 100 is connected to each of an exhaust port outside the store, a suction port outside the store, an atmosphere port 120 in the area, and an air supply port 130 in the area by a duct.

  The first ventilator 100 is, for example, a first blower that blows air from outside to the area in the first route, and a second fan that blows air from inside the area to the outside in the second route. May be provided. The first blower and the second blower are each realized by, for example, a fan and a motor that rotates the fan.

  The first ventilator 100 is, for example, a total heat exchanger.

  Here, the energy saving effect by the total heat exchanger will be described.

  FIG. 4 is a graph for explaining the relationship between the change in the outside air temperature and the presence or absence of the energy saving effect of the total heat exchanger. In FIG. 4, the vertical axis indicates the average power consumption per hour when the total heat exchanger is on and off when the air conditioner is heating indoors, and the horizontal axis is the outside air temperature. Indicates.

  As shown in FIG. 4, when the outside air temperature is 8 degrees or more and the total heat exchanger is on and when the total heat exchanger is off, the amount of power consumed for heating the air conditioner varies significantly. Absent. On the other hand, it can be seen that, when the outside air temperature is less than 8 degrees, when the total heat exchanger is on, the amount of power consumed for heating is significantly smaller than when the total heat exchanger is off. FIG. 4 illustrates a case where the air conditioner is heating in winter when the outside air temperature is less than 16 degrees, for example, less than 18 to 22 degrees, which is a comfortable room temperature. Similarly, it can be said that the same can be said when the air-conditioning equipment is cooling in summer when the outside air temperature is 30 degrees or more, which is greater than 24-28 degrees, for example, which is a comfortable room temperature. In other words, when the total heat exchanger is on when the outside air temperature is equal to or higher than a predetermined temperature, it can be estimated that the amount of power consumed for cooling is significantly smaller than when the total heat exchanger is off.

  The first ventilator 100 exchanges heat between the exhaust from the area and the supply air from outside the store. For this reason, if the difference between the temperature of the air in the store area and the temperature of the air outside the store is greater than a predetermined difference, the first ventilator 100 performs heat exchange to change the temperature of the air in the store area. The effect which maintains can be enlarged. For this reason, the air-conditioning load of the area in a store can be reduced. Here, the air conditioning load is a heating load or a cooling load.

  The kitchen ventilator 200 is provided in the kitchen room and ventilates air in the kitchen room and air outside the kitchen room. Specifically, the kitchen ventilator 200 includes an exhaust unit 210 that discharges air in the kitchen room to the outside of the kitchen room such as outdoors, and an air supply unit 220 that supplies air outside the kitchen room such as outside air to the kitchen room.

  The exhaust unit 210 is connected to the kitchen room side of the exhaust duct connecting the outside of the kitchen room and the kitchen room, and exhausts the air in the kitchen room to the outside by blowing air in the kitchen room to the outside. The exhaust unit 210 exhausts the air in the kitchen room to the outside of the kitchen room at least when cooking is performed in the kitchen room. For this reason, the kitchen chamber is in a negative pressure state. In the present embodiment, the exhaust unit 210 may be controlled with a fixed air volume. Thereby, it is suppressed that air flows toward an area from a kitchen room, and it is reduced that the odor by cooking flows into an area. The exhaust device 210 is realized by, for example, a fan and a motor that rotates the fan.

  The air supply device 220 is connected to an air supply duct that connects the outside and the kitchen room, and supplies the outside air into the kitchen room by blowing the outside air toward the kitchen room. The air supply device 220 can effectively ventilate the kitchen room together with the exhaust by the exhaust device 210 by supplying outside air into the kitchen room. Further, the air supply device 220 can control the pressure in the kitchen chamber by supplying air to the kitchen chamber. The air supply device 220 is realized by, for example, a fan and a motor that rotates the fan.

  In the present embodiment, air supply device 220 is controlled with a variable air volume in accordance with a control signal from controller 400. That is, when the air supply device 220 receives a control signal for increasing the output from the controller 400, the air supply device 220 increases the air volume by increasing the rotational speed of the motor. On the other hand, when the air supply device 220 receives a control signal for reducing the output from the controller 400, the air supply device 220 reduces the air volume by reducing the rotational speed of the motor.

  Further, the air supply device 220 is controlled with an air volume smaller than the air volume of the exhaust device 210 in order to maintain the kitchen chamber in a negative pressure state. That is, the air supply device 220 is controlled with a variable air volume in a range smaller than the air volume of the exhaust device 210.

  The second ventilator 300 is provided in the area and discharges the air in the area to the outside of the area such as outdoors. Specifically, the second ventilator 300 is connected to the area side of the exhaust duct that connects the outside of the area and the inside of the area, and the air in the area is blown toward the outside, so that the air in the area is aired. To the outside of the area. The second ventilator 300 is realized by, for example, a fan and a motor that rotates the fan. Note that the second ventilator 300 may further supply air outside the area, such as outdoors, into the area.

  The controller 400 controls the operations of the first ventilator 100, the kitchen ventilator 200, and the second ventilator 300. Specifically, the controller 400 controls the operations of the first ventilator 100, the kitchen ventilator 200, and the second ventilator 300 in accordance with the change in the amount of air flowing from the store area to the kitchen room. To do. The controller 400 may control the operation of the air conditioner 800.

  Here, the influence which the change of the inflow amount of the air flowing into the kitchen room from the area in the store has on the energy consumption applied to the air conditioner 800 will be described.

  FIG. 5A is a graph showing the relationship between the outside air temperature and the average power consumption per hour for the air conditioner when the amount of air flowing from the area in the store into the kitchen room is large. FIG. 5B is a graph showing the relationship between the outside air temperature and the average power consumption per hour for the air conditioner when the amount of air flowing from the store area to the kitchen room is small.

  As shown in FIG. 5A, when the inflow amount is large, the average power consumption of the air conditioner 800 is not so much when the first ventilator 100 is on and when the first ventilator 100 is off. does not change. This is because the amount of inflow of air from the area to the kitchen room increases, so that in addition to the air supply of the ventilation system 1 to the area, the gap between the wall, window, door, etc. This is probably because a lot of outside air is supplied.

  On the other hand, as shown in FIG. 5B, when the inflow amount is small, when the first ventilator 100 is on, the average power consumption of the air conditioner 800 is greater than when the first ventilator 100 is off. I understand that it is small. Thereby, it turns out that the effect which reduces the energy consumption concerning the air conditioner 800 in an area by the 1st ventilator 100 when there is much inflow is smaller than when there is little inflow.

  Therefore, the controller 400 decreases the output of the first ventilator 100 when the inflow amount of air from the area in the store to the kitchen room increases. When the amount of air inflow from the area in the store to the kitchen room increases, the controller 400 is less effective in reducing the energy consumed by the air conditioner 800 in the area even if the first ventilator 100 is operated. Judge. Thereby, the controller 400 reduces the output of the 1st ventilator 100, and reduces the energy consumption of the 1st ventilator 100. FIG.

  For example, the controller 400 may reduce the output of the first ventilator 100 by switching the first ventilator 100 from on to off. Moreover, the controller 400 reduces the output of the 1st ventilator 100, for example by switching the driving | running state of the 1st ventilator 100 from the strong operation to the weak operation of the ventilation volume smaller than a strong operation. May be.

  In addition, the controller 400 may increase the output of the first ventilator 100 when the amount of air flowing from the area into the kitchen room decreases after the output of the first ventilator 100 is decreased. That is, if the controller 400 operates the first ventilator 100 when the amount of inflow of air from the area to the kitchen room decreases, the controller 400 has a great effect of reducing the energy consumed by the air conditioner 800 in the area. to decide. Thereby, the controller 400 increases the output of the 1st ventilator 100, and reduces the energy consumption concerning the air conditioner 800 in an area. For example, the controller 400 may increase the output of the first ventilator 100 by switching the first ventilator 100 from off to on. Moreover, the controller 400 increases the output of the 1st ventilator 100 by switching the driving | running state of the 1st ventilator 100 from the weak driving | operation to the strong driving | running of the ventilation volume larger than a weak driving | operation, for example. May be.

  The controller 400 may determine that the amount of air flowing from the area in the store into the kitchen room has changed with the change in the output of the kitchen ventilator 200. For example, the controller 400 may determine that the amount of air flowing into the kitchen room from the area in the store has increased when the amount of exhaust from the kitchen ventilator 200 increases. For example, the controller 400 may determine that the amount of air flowing into the kitchen room from the area in the store has decreased when the amount of exhaust by the kitchen ventilator 200 decreases. In addition, the exhaust amount by the kitchen ventilator 200 here is obtained by subtracting the air supply amount by the air supply device 220 from the exhaust amount by the exhaust device 210. That is, the exhaust amount of the kitchen ventilator 200 is the amount of air that is relatively discharged from the kitchen room by the kitchen ventilator 200.

  Therefore, for example, when the air supply unit 220 of the kitchen ventilator 200 is in a strong operation state in which the air flow rate is larger than that in the weak operation from the weak operation state or the off state, the controller 400 reduces the exhaust amount by the kitchen ventilator 200. You may determine that it will increase. For example, when the air supply unit 220 of the kitchen ventilator 200 changes from a strong operation state to a weak operation or an off state in which the air flow rate is smaller than that of the strong operation, the controller 400 reduces the exhaust amount of the kitchen ventilator 200. You may judge.

  Further, the controller 400 outputs the first ventilator 100 at the first time when the number of opening / closing of the door 600 (see later) is a second time that is less than the first time. The amount of decrease in the output of the first ventilator 100 may be smaller than the amount of decrease. The number of doors 600 opened and closed per predetermined period may be the number of detections detected by a sensor that is arranged in an opening in which the door 600 is provided and detects whether or not the door 600 is present.

  For this reason, the controller 400 has a large amount of outside air flowing into the area when the door 600 is opened when the number of opening and closing is greater than the predetermined number of times, and even if the first ventilator 100 is operated, It is determined that the effect of reducing the energy consumption of the air conditioner 800 is small. Thereby, the controller 400 reduces the output of the 1st ventilator 100, and reduces the energy consumption of the 1st ventilator 100. FIG.

  On the other hand, if the controller 400 operates the first ventilator 100 when the number of open / close is less than the predetermined number of times, the amount of outside air flowing into the area due to the opening of the door 600 is small. It is determined that the effect of reducing the energy consumption of the device 800 is great. Thereby, the controller 400 increases the output of the 1st ventilator 100, and reduces the energy consumption concerning the air conditioner 800 in an area.

  Moreover, the controller 400 may reduce the output of the first ventilator 100 when the outflow amount of the air in the area to the outside of the store increases via the second ventilator 300. When the outflow amount of the air in the area to the outside of the store increases, the injection amount of the outside air into the area increases. That is, the controller 400 determines that the effect of reducing the energy consumption applied to the air conditioner 800 in the area is small even if the first ventilator 100 is operated, and reduces the output of the first ventilator 100. Thus, energy consumption of the first ventilator 100 is reduced.

  Moreover, the controller 400 may increase the output of the second ventilator 300 when the output of the first ventilator 100 is decreased. Thus, even if the output of the first ventilator 100 is reduced, the exhaust in the area can be continued with a predetermined exhaust amount by increasing the output of the second ventilator 300. Thereby, for example, it is possible to cope with 24-hour ventilation in which continuous ventilation is performed.

  The controller 400 includes, for example, a communication interface for transmitting a control signal to at least the first ventilator 100 among the first ventilator 100, the kitchen ventilator 200, and the second ventilator 300, and a program. Is realized by a processor that executes the above and a memory that stores the program. The controller 400 is not limited to the configuration described above, and may be realized by the communication interface and a dedicated circuit.

  The showcase 500 cools the product stored in the storage by cooling the space in the storage for storing the product. The showcase 500 is, for example, a refrigerated showcase or a freezer showcase.

  The door 600 is provided between the outside of the store and the inside of the store, and opens and closes an opening provided on a wall that partitions the outside of the store and the inside of the store. The door 600 may be a door that is rotatably supported, or may be a sliding door door that slides.

  The cooking device 700 is a device for cooking food, and specifically, a device for cooking food by heating. The cooking device 700 is, for example, a fryer as shown in FIG. The cooking device 700 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.

  The air conditioner 800 includes a ceiling-embedded indoor unit that is arranged, for example, on the ceiling of the area. An outdoor unit corresponding to the indoor unit is not shown. The indoor unit of the air conditioner 800 is not limited to the ceiling-embedded type, but may be a ceiling-suspended type, a wall-mounted type, a floor-mounted type, or the like. The air conditioner 800 is an air conditioner that can perform at least a cooling operation, and may be a dedicated cooling device, or may be a cooling / heating device that selectively switches between a cooling operation and a heating operation.

[2. Operation]
Next, the operation of the controller 400 of the ventilation system 1 will be described.

  FIG. 6 is a flowchart illustrating an example of the operation of the controller. FIG. 6 shows an example of ventilation control by the controller 400.

  The controller 400 determines whether or not the inflow amount of air from the area to the kitchen room has increased (S11). In step S11, for example, it may be determined whether the amount of air flowing from the area into the kitchen room is equal to or greater than a threshold value. Whether the inflow amount of air from the area to the kitchen room is equal to or greater than the threshold may be determined directly from the inflow amount of air from the area to the kitchen room, or the inflow of air from the area to the kitchen room. You may determine indirectly from the parameter correlated with quantity. Examples of the parameter correlated with the amount of air flowing into the kitchen room from the area include the output of the kitchen ventilator 200, but are not limited thereto. Another parameter that correlates with the amount of air flowing from the area into the kitchen room may be, for example, time.

  If the controller 400 determines that the amount of inflow of air from the area to the kitchen room has increased (Yes in S11), the controller 400 decreases the output of the first ventilator 100 (S12).

  Then, the controller 400 increases the output of the second ventilator 300 (S13).

  Step S12 and step S13 may be performed simultaneously. Step S13 may be performed prior to step S12.

  On the other hand, if the controller 400 determines that the amount of inflow of air from the area to the kitchen room has not increased (No in S11), the controller 400 increases the output of the first ventilator 100 (S14).

  And the controller 400 reduces the output of the 2nd ventilator 300 (S15).

  When step S13 or step S15 ends, controller 400 repeats step S11.

  Step S14 and step S15 may be performed simultaneously. Step S15 may be performed before step S14.

  In addition, the process of step S13-S15 does not necessarily need to be performed.

  Controller 400 may also operate as described below.

  FIG. 7 is a flowchart showing another example of the operation of the controller. FIG. 7 shows another example of ventilation control by the controller 400.

  The controller 400 determines whether or not the outflow amount of the air in the area to the outside of the store has increased via the second ventilator 300 (S21). In step S <b> 21, for example, the determination may be made based on whether or not the outflow amount of the air in the area to the outside of the store via the second ventilator 300 is greater than or equal to a threshold value. Whether or not the amount of outflow of the air in the area to the outside of the store via the second ventilator 300 is equal to or greater than the threshold value is determined by the amount of outflow of the air in the area to the outside of the store through the second ventilator 300 The determination may be made directly from, or indirectly based on a parameter correlated with the outflow amount of the air in the area to the outside of the store via the second ventilator 300. For example, the output of the second ventilator 300 may be used as a parameter that correlates with the outflow amount of the air in the area to the outside of the store via the second ventilator 300, but the parameter is not limited thereto. is not. Another parameter that correlates with the outflow amount of air in the area to the outside of the store via the second ventilator 300 may be, for example, time.

  When the controller 400 determines that the amount of outflow of air in the area to the outside of the store has increased via the second ventilator 300 (Yes in S21), the controller 400 decreases the output of the first ventilator 100 (S22). ).

  Then, the controller 400 increases the output of the second ventilator 300 (S23).

  Step S22 and step S23 may be performed simultaneously. Step S23 may be performed prior to step S22.

  On the other hand, if the controller 400 determines that the amount of outflow of air in the area to the outside of the store has not increased via the second ventilator 300 (No in S21), the controller 400 outputs the output of the first ventilator 100. Increase (S24).

  And the controller 400 reduces the output of the 2nd ventilator 300 (S25).

  The controller 400 repeats step S21 when step S23 or step S25 ends.

  Step S24 and step S25 may be performed simultaneously. Step S25 may be performed prior to step S24.

  In addition, the process of step S23-S25 does not necessarily need to be performed.

[3. effect]
According to the control method for a ventilator according to the present embodiment, when the amount of air flowing into the kitchen room from the area in the store, which is different from the kitchen room in the store, increases in the area of the first ventilator provided in the area. Reduce output. The first ventilator 100 includes a heat exchanger 110 that exchanges heat between exhaust from the area and supply air from outside the store.

  For this reason, the energy consumption by the 1st ventilator 100 can be reduced effectively.

  Moreover, in this Embodiment, after reducing the output of the 1st ventilator 100, if the inflow amount of the air from an area to a kitchen room falls, the output of the 1st ventilator 100 will be increased.

  For this reason, the energy consumption concerning the air conditioner 800 in a shop can be effectively reduced by operating the 1st ventilator 100. FIG.

  Moreover, in this Embodiment, when the opening / closing number of doors 600 from the outside of the store to the inside of the store per predetermined period is the second time, which is less than the first time, the first ventilation at the first time The amount of decrease in the output of the first ventilator 100 is made smaller than the amount of decrease in the output of the ventilator 100.

  That is, the amount of decrease in the output of the first ventilator 100 is adjusted according to the number of doors opened and closed per predetermined period. For this reason, the energy consumption by the 1st ventilator 100 and the energy consumption concerning the air conditioner 800 in a shop can be reduced effectively.

  Moreover, in this Embodiment, if the outflow amount of the air in an area to the exterior of a store increases via the 2nd ventilator 300 provided in the area, the output of the 1st ventilator 100 will be reduced.

  For this reason, the energy consumption by a 1st ventilator can be reduced effectively.

  Moreover, in this Embodiment, if the output of the 1st ventilator 100 is reduced, the output of the 2nd ventilator 300 provided in the area will be increased.

  For this reason, the reduction of the ventilation amount between an area and the outdoor can be suppressed. Therefore, the state which is always ventilating can be maintained.

[4. Modified example]
[4-1. Modification 1]
In the above description, the controller 400 operates without considering the outside air temperature, but may operate while considering the outside temperature.

  FIG. 8 is a block diagram illustrating an example of a configuration of a ventilation system according to the first modification of the embodiment.

  The ventilation system 1A according to the modification 1 is different from the ventilation system 1 according to the embodiment in that a temperature acquirer 410 is further provided. The other configuration of the ventilation system 1A is the same as the configuration of the ventilation system 1 of the embodiment, so the same reference numerals are given and the description is omitted.

  The temperature acquirer 410 acquires the outside air temperature. The temperature acquirer 410 is, for example, a temperature sensor that detects the outside air temperature. Moreover, the temperature acquisition unit 410 may acquire the outside air temperature by acquiring information related to the outside air temperature from the outside.

  The controller 400 may adjust the output of the first ventilator 100 according to the outside air temperature acquired by the temperature acquirer 410. If the controller 400 determines that the outside air temperature acquired by the temperature acquirer 410 is in a predetermined temperature range, the controller 400 may perform ventilation control shown in FIG. 6 or FIG. 7 of the embodiment. If controller 400 determines that the outside air temperature acquired by temperature acquirer 410 is not within a predetermined temperature range, controller 400 may decrease the output of first ventilator 100. Note that the predetermined temperature zone here refers to, for example, the effect of reducing energy consumption for heating by the operation of the total heat exchanger described with reference to FIG. 4 when the total heat exchanger is on. The temperature range is less than a first temperature (for example, 8 degrees). In addition, the predetermined temperature zone is, for example, similarly, for example, as described with reference to FIG. 4, when the total heat exchanger is on, the effect of reducing the energy consumed for cooling by the operation of the total heat exchanger Is in a temperature range higher than a second temperature (for example, 28 degrees). The first temperature is lower than the second temperature.

  FIG. 9 is a flowchart illustrating an example of the operation of the controller according to the first modification of the embodiment.

  The controller 400 acquires the outside air temperature from the temperature acquirer 410 (S31).

  The controller 400 determines whether or not the outside air temperature acquired from the temperature acquirer 410 is in a predetermined temperature range (S32).

  If the controller 400 determines that the outside air temperature acquired from the temperature acquirer 410 is in a predetermined temperature range (Yes in S32), the controller 400 performs ventilation control shown in FIG. 6 or FIG. 7 (S33).

  If the controller 400 determines that the acquired maximum outside air temperature is not within the predetermined temperature range from the temperature acquirer 410 (No in S32), the controller 400 decreases the output of the first ventilator 100 (S34).

  And the controller 400 reduces the output of the 2nd ventilator 300 (S35).

  When step S33 or step S35 is completed, the controller 400 repeats step S31.

  Step S34 and step S35 may be performed simultaneously. Further, step S35 may or may not be performed prior to step S34.

  Thereby, since the ventilation control is performed when the energy saving effect of the first ventilator 100 is large, it is possible to more effectively reduce the energy consumed for the ventilation of the first ventilator 100.

[4-2. Modification 2]
In the above embodiment, the kitchen ventilator 200 is configured by the exhaust device 210 and the air supply device 220, but may be configured by only the exhaust device 210. In this case, the exhaust device 210 has a configuration that can be switched between, for example, a weak operation and a strong operation with a larger air flow rate than the weak operation.

  When the operation state of the exhaust device 210 is switched from the weak operation to the strong operation, the controller 400 determines that the air inflow amount from the area to the kitchen room has increased. Further, the controller 400 determines that the inflow amount of air from the area to the kitchen room has decreased when the operation state of the exhaust device 210 is switched from the strong operation to the weak operation.

  As mentioned above, although the control method and ventilation system of the ventilator which concern on the one or some aspect of this invention were demonstrated based on embodiment, this 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 ventilator control method, a ventilation system, and the like that can effectively reduce energy consumption for ventilation as compared with the related art.

DESCRIPTION OF SYMBOLS 1 Ventilation system 100 1st ventilator 110 Heat exchanger 120 Ambient air inlet 130 Air inlet 200 Kitchen ventilator 210 Exhaust device 220 Air supply device 300 Second ventilator 400 Controller 410 Temperature acquisition device 500 Showcase 600 Door 700 Cooker 800 Air-conditioning equipment

Claims (6)

  When the amount of inflow of air from the store area to the kitchen room, which is different from the storeroom in the store, is provided in the area, heat is exchanged between the exhaust from the area and the air supply from outside the store A method for controlling a ventilator, comprising the step (a) of reducing an output of a first ventilator including a heat exchanger to be operated.   The ventilator according to claim 1, further comprising a step (b) of increasing an output of the first ventilator when an inflow amount of air from the area to the kitchen room decreases after the step (a). Control method.   Decreasing the output of the first ventilator at the first time when the number of doors opened and closed per predetermined period from outside the store to the inside of the store is a second time less than the first time The method for controlling a ventilator according to claim 1 or 2, wherein a decrease amount of the output of the first ventilator is made smaller than an amount.   The step (c) of decreasing the output of the first ventilator when the outflow amount of the air in the area to the outside of the store increases via the second ventilator provided in the area is provided. The control method of the ventilator of any one of claim | item 1-3.   The ventilation according to any one of claims 1 to 3, further comprising a step (d) of increasing the output of a second ventilator provided in the area when the output of the first ventilator is decreased. Control method.   A first ventilator comprising a kitchen ventilator provided in a kitchen room in a store, and a heat exchanger for exchanging heat from an area in the store different from the kitchen room and air outside the store; A ventilation system comprising: a controller that reduces the output of the first ventilator when an inflow amount of air from the area to the kitchen room increases with a change in the output of the kitchen ventilator.