JP2020193797A - Ventilation system - Google Patents

Abstract

To provide a ventilation system reducing the difference in temperature and humidity between floors using a heat exchange type ventilation device installed on each of the floors of a building.SOLUTION: A ventilation system 1 includes: an air supply blowing part supplying outdoor air; an exhaust bowing part exhausting indoor air; and a plurality of heat exchange type ventilation devices 2 provided with a heat exchange part performing heat exchange between air supplied to the inside of a room and air exhausted to the outside of the room. The plurality of heat exchange type ventilation devices 2 include a heat exchange type ventilation device 2a performing ventilation of a first floor 5a, and a heat exchange type ventilation device 2b performing ventilation of a second floor 5b. A control part provided in the ventilation system 1 increases a ratio of an air supply amount to an exhaust amount of the heat exchange type ventilation device 2b and increases a ratio of an exhaust amount to the air supply amount of the heat exchange type ventilation device 2a when at least one of temperature difference and humidity difference between the first floor 5a and the second floor 5b exceeds a reference value.SELECTED DRAWING: Figure 1

Description

The present invention relates to a ventilation system of a building, and particularly to a ventilation system in which a plurality of ventilation devices are arranged.

As a ventilation system for a residential building, a ventilation system using a heat exchange type ventilation device that introduces outdoor air from an outside air air supply port and supplies it into the room via a built-in heat exchange element is known (for example, a patent). Reference 1). This heat exchange type ventilation device performs air supply and exhaust at the same time, and ventilates while exchanging heat between the air supply airflow (outdoor air) and the exhaust flow (indoor air). In such a conventional ventilation system, the ventilation performance of the heat exchange type ventilation device has a certain limit. Therefore, when the floor area of the residential building is large, for example, heat exchange type ventilation is performed on each floor of the residential building having multiple floors. A device is installed to ventilate each floor.

Japanese Unexamined Patent Publication No. 2013-195008

However, in the conventional ventilation system, ventilation control is performed by detecting indoor / outdoor temperature and humidity (temperature and humidity of air supply and exhaust flow) on the floor where the heat exchange type ventilation device is installed. Therefore, even if there is a difference in temperature and humidity from other floors due to the living conditions of people indoors, ventilation control is only executed based on the temperature and humidity information of each floor, and the floors are inter-floor. There is concern that the difference in temperature and humidity will be difficult to eliminate.

Therefore, the present invention solves the above-mentioned conventional problems, and provides a ventilation system capable of reducing the difference in temperature and humidity between floors by using ventilation devices installed on each floor of the building. The purpose is.

In order to achieve this object, the ventilation system of the present invention includes a first ventilation device that supplies and exhausts the first floor, and a second ventilation device that supplies and exhausts the second floor different from the first floor. A control unit for controlling the supply / exhaust operation of the first ventilation device and the supply / exhaust operation of the second ventilation device is provided, and the control unit is a temperature difference between the first floor and the second floor. And when at least one of the humidity differences exceeds a predetermined reference value, the ratio of the air supply amount to the exhaust amount of either the first ventilation device and the second ventilation device is increased, and the above-mentioned The ratio of the exhaust amount to the air supply amount of the first ventilation device and the other device of the second ventilation device is increased, thereby achieving the intended purpose.

According to the present invention, it is possible to provide a ventilation system capable of reducing the difference in temperature and humidity between floors by using a ventilation device installed on each floor of a building.

Schematic diagram of a house provided with a ventilation system according to the first embodiment of the present invention. Perspective view of the heat exchange type ventilation device that constitutes the ventilation system Cross-sectional view of the heat exchange type ventilation device that constitutes the ventilation system Block diagram showing the configuration of the control unit in the heat exchange type ventilator FIG. 5 is a flowchart showing a ventilation operation procedure in the heat exchange type ventilation device. Schematic diagram of a house provided with a ventilation system according to a second embodiment of the present invention. Schematic diagram of a house provided with a ventilation system according to a third embodiment of the present invention. The block diagram which shows the structure of the control part in the heat exchange type ventilation apparatus which concerns on Embodiment 3 of this invention. A flowchart showing an operation procedure in the ceiling fan interlocking operation according to the third embodiment of the present invention.

The first ventilation device that supplies and exhausts the first floor, the second ventilation device that supplies and exhausts the second floor different from the first floor, the supply and exhaust operation of the first ventilation device, and the second ventilation device. The control unit includes a control unit that controls the air supply / exhaust operation, and at least one of the temperature difference and the humidity difference between the first floor and the second floor exceeds a predetermined reference value. In the case, the ratio of the air supply amount to the exhaust amount of either one of the first ventilation device and the second ventilation device is increased, and the other of the first ventilation device and the second ventilation device is increased. It is characterized by increasing the ratio of the exhaust amount to the air supply amount of the device. According to such a configuration, the first floor (or the second floor) is in a pressurized state by increasing the ratio of the air supply amount to the exhaust amount of the first ventilation device (or the second ventilation device), and the second floor is pressurized. The second floor (or the first floor) is decompressed by increasing the ratio of the displacement to the air supply of the ventilator (or the first ventilator). Therefore, when at least one of the temperature difference and the humidity difference between the first floor and the second floor exceeds the reference value, the pressure is reduced from the first floor (or the second floor) in the pressurized state. A flow of air to the second floor (or first floor) can be created. Then, the second ventilation device (or the first ventilation device) performs ventilation control that reflects the temperature and humidity of the indoor air including the inflowing air. That is, the ventilation system installed on each floor of the building can be used to provide a ventilation system capable of reducing the difference in temperature and humidity between the floors.

Further, the control unit and the first ventilation device so that the ratio of the increase in the air supply amount to the exhaust amount of the one device is equal to the ratio of the increase in the exhaust amount to the air supply amount of the other device. The operation of the second ventilation device may be controlled. By doing so, the temperature and humidity between the floors can be adjusted while the total ventilation volume, which is the sum of the ventilation volume of one device and the ventilation volume of the other device, is constant (the required ventilation volume is secured). The difference can be reduced.

Further, the control unit independently separates the air supply / exhaust operation of the first ventilation device and the air supply / exhaust operation of the second ventilation device when the temperature difference and the humidity difference do not exceed the reference value. May be controlled. By doing so, it is possible to efficiently ventilate each floor by each ventilation device.

Further, it is preferable that the control unit is provided in the one device, and the supply / exhaust operation of the other device is controlled based on a control signal from the one device. By doing so, interlocking control between the first ventilation device and the second ventilation device can be performed with a simple configuration.

Further, a blower provided in a space communicating the first floor and the second floor is further provided, and when the control unit exceeds the reference value, the first ventilation device and the second ventilation device are provided. The blower operation of the blower may be controlled in conjunction with the supply / exhaust operation of the blower. By doing so, in addition to the air flow generated by the interlocking control between the first ventilator and the second ventilator, the blower further creates an air flow between the first floor and the second floor. Therefore, the difference in temperature and humidity between floors can be further reduced.

Further, the control unit may control the blower so as to blow air from the pressurized floor to the decompressed floor. By doing so, the air flow generated by the blower is in the forward direction with respect to the air flow generated by the interlocking control between the first ventilation device and the second ventilation device. Therefore, the air flow between the first floor and the second floor can be made larger, and the difference in temperature and humidity between the floors can be further reduced.

Further, the first ventilation device and the second ventilation device may be configured to include a heat exchange element that exchanges heat between the air supply air passage and the exhaust air passage. According to such a configuration, since the first ventilation device and the second ventilation device can recover heat in the air supply and exhaust, the loss of heat energy due to ventilation can be reduced.

Further, the control unit includes a target wind speed calculation unit that calculates a target wind speed that satisfies the target value of the comfort index based on temperature and humidity information, and when the temperature difference and the humidity difference do not exceed the reference value. , The target wind speed satisfying the target value of the comfort index based on the temperature average value between the first floor and the second floor and the humidity average value between the first floor and the second floor. The operation of the blower may be controlled so as to be. By doing so, it is possible to realize a combination of temperature, humidity and wind speed that the resident feels comfortable with.

Further, at least one wind speed measuring unit for measuring the wind speed is provided, and the control unit sets the target wind speed when the wind speed difference between the average value of the measured wind speeds and the target wind speed exceeds a predetermined reference value. The operation of the blower may be controlled so as to satisfy. By doing so, the control unit can correct the operating output of the blower and more reliably achieve the target wind speed.

The control unit may measure the indoor wind speed after a predetermined time has elapsed from the start of the operation of the blower. By doing so, the wind speed measuring unit measures the wind speed in a state where the airflow in the house is stable. Therefore, the control unit can more accurately correct the operating output of the blower.

Predicted Mean Hot and Cold Feeling Report (PMV) may be used as the comfort index. By doing so, the relationship between the temperature, humidity, and wind speed that the resident feels comfortable can be clearly determined.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
First, the ventilation system 1 provided with a plurality of heat exchange type ventilation devices according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic view of a house provided with a ventilation system according to a first embodiment of the present invention. FIG. 2 is a perspective view of a heat exchange type ventilation device constituting the ventilation system. FIG. 3 is a cross-sectional view of a heat exchange type ventilation device constituting the ventilation system.

As shown in FIG. 1, in the ventilation system 1 according to the embodiment of the present invention, a plurality of heat exchange type ventilation devices 2 are installed indoors in a residential building 100. The heat exchange type ventilator 2 simultaneously exhausts the indoor air and supplies the outdoor air, and exchanges heat between the exhaust flow 3 (indoor air) and the air supply 4 (outdoor air). It is a device that ventilates while supplying fresh air to each room in the floor with a supply airflow 4 that exchanges heat with the exhaust flow 3. Specifically, in the ventilation system 1, the heat exchange type ventilation device 2a is installed on the first floor 5a on the first floor, and the heat exchange type ventilation device 2b is installed on the second floor 5b on the second floor. The heat exchange type ventilator 2a is mainly responsible for ventilation of the space including each room partitioned on the first floor 5a, while the heat exchange type ventilator 2b is mainly responsible for ventilation of each room partitioned on the second floor 5b. Each is installed to take charge of ventilation of the space including it. Here, the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b are connected by a control signal line 8, and ventilation control linked to each other is possible. The heat exchange type ventilation device 2a corresponds to the "first ventilation device" of the claim, and the heat exchange type ventilation device 2b corresponds to the "second ventilation device" of the claim.

Next, the detailed configuration of the heat exchange type ventilator 2 will be described.

As shown in FIG. 2, the heat exchange type ventilator 2 has a box-shaped main body. On the side surface of the main body, an outside air suction port 9, an indoor air exhaust port 10 (indoor side suction port), and an outside air air supply port 11 (indoor side air outlet) are provided. Further, an indoor air suction port 12 is provided on the lower surface of the main body. The main body is installed behind the ceiling of the living room on each floor. Here, the outside air supply port 11 is provided so as to face the surface where the outside air suction port 9 and the indoor air exhaust port 10 are provided. A duct (see the exhaust duct 6 and the air supply duct 7 in FIG. 1) can be connected to the outside air suction port 9, the indoor air exhaust port 10, and the outside air supply port 11, respectively.

The outside air suction port 9 is a suction port for sucking the air (outside air) outside the building into the inside of the heat exchange type ventilation device 2. Specifically, the outside air suction port 9 communicates with an outdoor air supply port (not shown) that sucks outside air through a duct (see the air supply duct 7 in FIG. 1) extending to the outer wall surface of the building. Be connected.

The indoor air exhaust port 10 is a discharge port for blowing indoor air (inside air) from the heat exchange type ventilator 2 to the outside of the building. Specifically, the indoor air exhaust port 10 is connected to an outdoor exhaust port (not shown) that blows out inside air through a duct (see the exhaust duct 6 in FIG. 1) extending to the outer wall surface of the building. Will be done.

The outside air supply port 11 is a discharge port for blowing outside air from the heat exchange type ventilation device 2 into each room. Specifically, the outside air supply port 11 is an indoor air supply port (see the air supply duct 7 in FIG. 1) that blows out outside air through a duct extending to the ceiling surface or wall surface of each space in the building. (Not shown) and connected.

The indoor air suction port 12 is a suction port for sucking the air (inside air) in the building into the heat exchange type ventilation device 2 in the living room where the main body is installed.

Next, as shown in FIG. 3, a heat exchange element 13, a control unit 20, an exhaust air blower unit 24, and an air supply air blower unit 25 are provided inside the heat exchange type ventilator 2.

The air supply air blowing unit 25 has an air supply fan 16 and an air supply motor 18. The air supply fan 16 is rotated by the air supply motor 18. For the air supply motor 18, for example, a DC motor or the like is used.

The exhaust air blowing unit 24 includes an exhaust fan 17 and an exhaust motor 19. The exhaust fan 17 is rotated by the exhaust motor 19. As the exhaust motor 19, the same DC motor as the air supply motor 18 is used.

The operation of the exhaust air blower unit 24 and the air supply air blower unit 25 is controlled by the control unit 20. Specifically, the exhaust air blower unit 24 and the air supply air blower unit 25 control the rotation speeds of the air supply motor 18 and the exhaust motor 19 by a control signal from the control unit 20. As a result, the exhaust amount (exhaust air amount) by the exhaust air blower unit 24 and the air supply amount (supply air amount) by the air supply air blower unit 25 are controlled, respectively. In the constant operation state, the control unit 20 controls the amount of exhaust gas by the exhaust air blower unit 24 and the amount of air supply by the air supply air blower unit 25 at the same ratio, but among the temperature difference and humidity difference between the floors. When at least one of them exceeds a predetermined value, the ratio of the air supply amount to the exhaust amount or the ratio of the exhaust amount to the air supply amount is controlled to be increased or decreased. Details will be described later.

Further, the heat exchange type ventilation device 2 has an air supply air passage 14 and an exhaust air passage 15.

The air supply air passage 14 is an air passage through which the air supply air flow 4 (see FIG. 1) circulates. In the air supply air passage 14, the outdoor air (outside air) taken into the heat exchange type ventilation device 2 is heat-exchanged with the air that passes through the heat exchange element 13 and is exhausted. After that, the outdoor air (outside air) is sucked into the air supply fan 16 and supplied to each room from the outside air air supply port 11 through the air supply duct 7 (see FIG. 1). That is, the air supply air passage 14 sucks fresh outdoor air (air supply air) from the outside air suction port 9, passes through the heat exchange element 13 inside the heat exchange type ventilation device 2, and enters the room from the outside air air supply port 11. It is a supply route.

The exhaust air passage 15 is an air passage through which the exhaust flow 3 (see FIG. 1) circulates. In the exhaust air passage 15, the exhausted air is sucked into the main body from the indoor air suction port 12, passes through the heat exchange element 13, and exchanges heat with the air to be supplied, and the exhaust fan 17 Is sucked into. The air sucked into the exhaust fan 17 is discharged from the indoor air exhaust port 10 to the outside of the building through the exhaust duct 6 (see FIG. 1). That is, the exhaust air passage 15 is a path for sucking dirty indoor air (exhaust air) from the indoor air suction port 12 and exhausting it to the outside from the indoor air exhaust port 10 through the heat exchange element 13.

The heat exchange element 13 has a heat recovery function of supplying the heat amount of the exhausted air to the supplied air or supplying the heat amount of the supplied air to the heat amount of the exhausted air. There is. The heat exchange element 13 is arranged at a position where the air supply air passage 14 and the exhaust air passage 15 intersect. The heat exchange type ventilation device 2 further includes a bypass exhaust air passage through which the exhausted air does not pass through the heat exchange element 13, and an exhaust air passage (heat exchange exhaust air passage) passing through the heat exchange element 13 and a bypass exhaust air. It may be configured so that the road can be switched. In this case, switching between the heat exchange exhaust air passage and the bypass exhaust air passage is performed by a damper (not shown).

The control unit 20 controls the operations of the exhaust air blower unit 24 and the air supply air blower unit 25. Specifically, the control unit 20 controls the rotation speed of the exhaust motor 19 and the rotation speed of the air supply motor 18. As a result, the control unit 20 controls the air supply amount and the exhaust amount of the heat exchange type ventilation device 2, respectively. Details will be described later.

Further, as shown in FIG. 3, the heat exchange type ventilation device 2 includes an indoor air supply temperature sensor 21, an indoor exhaust temperature sensor 22, and an indoor exhaust humidity sensor 23. The indoor air supply temperature sensor 21 is a sensor provided in the air supply air passage 14 and detects the temperature of the air (SA: Supply Air) blown out from the outside air air supply port 11 of the heat exchange type ventilator 2. The indoor exhaust temperature sensor 22 is a sensor provided in the exhaust air passage 15 and detects the temperature of the air (RA: Return Air) sucked from the indoor air suction port 12 of the heat exchange type ventilation device 2. The indoor exhaust humidity sensor 23 is a sensor provided in the exhaust air passage 15 and detects the humidity of the air (RA) sucked from the indoor air suction port 12 of the heat exchange type ventilation device 2. The indoor exhaust temperature sensor 22 and the indoor exhaust humidity sensor 23 may be integrated temperature / humidity sensors instead of separate sensors. Then, the indoor air supply temperature sensor 21, the indoor exhaust temperature sensor 22, and the indoor exhaust humidity sensor 23 output the acquired information to the control unit 20.

Then, the heat exchange type ventilator 2 simultaneously exhausts the indoor air and supplies the outdoor air based on the detected temperature and humidity information on each floor, and simultaneously performs the indoor air (inside air) and the outdoor air. Ventilate while exchanging heat with the air (outside air).

Next, the control unit 20 of the heat exchange type ventilation device 2a will be described with reference to FIG. FIG. 4 is a block diagram showing a configuration of a control unit in the heat exchange type ventilator. In the following description, the heat exchange type ventilator 2a installed on the first floor 5a will be the main, and the heat exchange type ventilator 2b installed on the second floor 5b will be the subordinate, but the master-slave relationship will be reversed. May be controlled. The control unit 20 of the heat exchange type ventilation device 2a and the control unit 20 of the heat exchange type ventilation device 2b basically have the same configuration and function, and execute the same ventilation control. An integrated control unit that controls both the control unit 20 of the heat exchange type ventilation device 2a and the control unit 20 of the heat exchange type ventilation device 2b may be provided in the ventilation system for control.

As shown in FIG. 4, the control unit 20 of the heat exchange type ventilation device 2a includes an input unit 20a, a storage unit 20b, a timekeeping unit 20c, a processing unit 20d, and an output unit 20e.

The input unit 20a includes first information regarding an operation start instruction or an operation stop instruction from the operation unit 26, second information regarding the temperature of the outdoor air from the indoor air supply temperature sensor 21, and the indoor exhaust temperature sensor 22 and the room. It receives the third information about the temperature and humidity of the indoor air from the inner exhaust humidity sensor 23. Further, the input unit 20a receives the fourth information regarding the temperature and humidity of the indoor and outdoor air on the second floor 5b as the information from the heat exchange type ventilation device 2b. The fourth information is information corresponding to the second information and the third information on the first floor 5a. The input unit 20a outputs the received first information to the fourth information to the processing unit 20d.

Here, the operation unit 26 is a terminal (for example, air volume, blowout temperature, etc.) for the user to input user input information (for example, air volume, blowout temperature, etc.) regarding the heat exchange type ventilation device 2 (heat exchange type ventilation device 2a, heat exchange type ventilation device 2b). (Remote control), which is wirelessly or wiredly connected to the control unit 20 in a communicable manner. The first information also includes user input information.

The storage unit 20b has the fifth information regarding the ventilation setting in the ventilation operation when it is independent (when not interlocked with the heat exchange type ventilation device 2b) and the fifth information regarding the ventilation setting in the ventilation operation when interlocking with the heat exchange type ventilation device 2b. (6) The information and the seventh information regarding the setting information corresponding to the user input information are stored. The storage unit 20b outputs the stored fifth information to the seventh information to the processing unit 20d.

The timekeeping unit 20c outputs the eighth information regarding the current time to the processing unit 20d.

The processing unit 20d receives the first information to the fourth information from the input unit 20a, the fifth information to the seventh information from the storage unit 20b, and the eighth information from the timekeeping unit 20c. The processing unit 20d uses the received first information to the eighth information to specify the control information regarding the ventilation operation based on the ventilation setting at the time of stand-alone or the ventilation operation based on the ventilation setting at the time of interlocking with the heat exchange type ventilation device 2b. To do. Specifically, when the temperature difference and the humidity difference between the first floor 5a and the second floor 5b do not exceed a predetermined reference value (for example, a temperature difference of 5 ° C. and a humidity difference of 10% RH). Identify control information about ventilation operation based on the ventilation setting when alone. On the other hand, when at least one of the temperature difference and the humidity difference between the first floor 5a and the second floor 5b exceeds a predetermined reference value, when interlocking with the heat exchange type ventilation device 2b Identify control information for ventilation behavior based on ventilation settings. The control information related to the ventilation operation based on the ventilation setting at the time of stand-alone includes non-interlocking information for performing the ventilation operation that is not interlocked with the heat exchange type ventilation device 2b. The processing unit 20d outputs the specified control information to the output unit 20e.

The output unit 20e receives the control information from the processing unit 20d. The output unit 20e is electrically connected to the heat exchange type ventilation device 2b (control unit 20 of the heat exchange type ventilation device 2b), the exhaust air blowing unit 24, and the air supply air blowing unit 25. Then, the output unit 20e outputs a signal (control signal) for controlling the ventilation operation when it is alone or when it is linked with the heat exchange type ventilation device 2b, based on the received control information. Specifically, when the temperature difference and the humidity difference between the first floor 5a and the second floor 5b do not exceed a predetermined reference value, a signal for controlling the ventilation operation at the time of isolation is output. On the other hand, when at least one of the temperature difference and the humidity difference between the first floor 5a and the second floor 5b exceeds a predetermined reference value, the ventilation operation when interlocking with the heat exchange type ventilation device 2b Outputs a signal to control.

The exhaust air blower unit 24 and the air supply air blower unit 25 receive signals from the output unit 20e, respectively, and execute their respective controls based on the received signals.

Further, the heat exchange type ventilator 2b receives a signal from the output unit 20e, and the control unit 20 of the heat exchange type ventilator 2b receives the exhaust air blower unit 24 and the supply of the heat exchange type ventilator 2b based on the received signal. Control of the air blower 25 is executed. Specifically, when the temperature difference and the humidity difference between the first floor 5a and the second floor 5b do not exceed a predetermined reference value, the heat exchange type ventilator 2b is the heat exchange type ventilator 2b. Based on the information on the indoor / outdoor temperature and humidity from each of the sensors (indoor air supply temperature sensor 21, indoor exhaust temperature sensor 22, indoor exhaust humidity sensor 23), the exhaust air blower of the heat exchange type ventilation device 2b. 24 and the air supply / ventilation unit 25 are controlled. On the other hand, when at least one of the temperature difference and the humidity difference between the first floor 5a and the second floor 5b exceeds a predetermined reference value, the heat exchange type ventilator 2b is a heat exchange type ventilator. Based on the signal received from 2a, the exhaust air blower unit 24 and the air supply air blower unit 25 of the heat exchange type ventilator 2b are controlled.

As described above, the control unit 20 executes the control of the ventilation operation at the time of being independent and the control of the ventilation operation at the time of interlocking with the heat exchange type ventilation device 2b, respectively.

Next, each ventilation operation (independent state, interlocking state) of the heat exchange type ventilation device 2 will be described.

In the case of the ventilation operation at the time of a single unit, each of the heat exchange type ventilation devices 2 (heat exchange type ventilation device 2a, heat exchange type ventilation device 2b) has the exhaust air volume (exhaust volume) by the exhaust air blower unit 24 and the air supply air blower unit 25. The air supply air volume (air supply volume) is controlled to the same ratio. That is, when the exhaust air volume during the ventilation operation is X [m ³ / h], the supply air volume is set to X [m ³ / h]. Then, the heat exchange type ventilation device 2 performs ventilation control that reflects the temperature and humidity of the air in the room of each floor (the temperature and humidity of the exhaust flow 3).

On the other hand, in the case of the ventilation operation at the time of interlocking, one of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b increases the ratio of the air supply air volume by the air supply air supply unit 25 to the exhaust air volume by the exhaust air blower unit 24. In response to this, the other device of the heat exchange type ventilator 2a and the heat exchange type ventilator 2b controls to increase the ratio of the exhaust air volume by the exhaust air blower 24 to the air supply air volume by the air supply air blower 25. There is. As a result, the first floor 5a (or the second floor 5b) is in a pressurized state by increasing the ratio of the air supply amount to the exhaust amount of the heat exchange type ventilator 2a (or the heat exchange type ventilator 2b). By increasing the ratio of the exhaust amount to the air supply amount of the heat exchange type ventilator 2b (or the heat exchange type ventilator 2a), the second floor 5b (or the first floor 5a) is in a depressurized state. An air flow can be generated from the pressurized first floor 5a (or second floor 5b) to the decompressed second floor 5b (or first floor 5a). Then, the heat exchange type ventilation device 2b (or the heat exchange type ventilation device 2a) performs ventilation control that reflects the temperature and humidity (temperature and humidity of the exhaust flow 3) of the indoor air including the inflowing air.

Here, in order to increase the ratio of the air supply air volume by the air supply air supply unit 25 to the exhaust air volume by the exhaust air blower unit 24, a) the air supply air volume is increased to X + a [m ³ / h], and b) the exhaust air volume is increased. There are methods such as reducing to X-a [m ³ / h], c) combining an increase in the supply air volume and a decrease in the exhaust air volume. On the other hand, in order to increase the ratio of the exhaust air volume by the exhaust air blower 24 to the air supply air volume by the air supply air blower 25, a) the exhaust air volume is increased to X + a [m ³ / h], and b) the supply air volume is X. There are methods such as reducing to −a [m ³ / h], c) combining an increase in the exhaust air volume and a decrease in the supply air volume.

In the ventilation system 1 according to the present embodiment, for example, the air supply air volume of the heat exchange type ventilation device 2b is X + a [m ³ / h], and the air supply air volume of the heat exchange type ventilation device 2a is X-a [m ^3]. / H] is set. By setting the increase / decrease of the air supply air volume to the same a [m ³ / h], the total air supply volume of the residential building is constant before and after the increase / decrease. Further, the exhaust air volume of the heat exchange type ventilator 2a and the exhaust air volume of the heat exchange type ventilator 2b remain X [m ³ / h]. As a result, the ratio of the air supply air volume to the exhaust air volume of the heat exchange type ventilator 2b is increased, and the ratio of the exhaust air volume to the air supply air volume of the heat exchange type ventilator 2a is increased. As a result, the total ventilation volume of the residential building (the sum of the ventilation volume of the heat exchange type ventilation device 2a and the ventilation volume of the heat exchange type ventilation device 2b) is kept constant from the second floor 5b to the first floor 5a. It can create a flow of air. When the supply air volume of the heat exchange type ventilator 2b is set to X + a [m ³ / h] and the exhaust air volume of the heat exchange type ventilator 2a is set to X + a [m ³ / h], the second floor 5b The air flow from the first floor 5a to the first floor 5a can be further generated. Further, when the air supply air volume of the heat exchange type ventilator 2a is set to X + a [m ³ / h] and the air supply air volume of the heat exchange type ventilator 2b is set to X-a [m ³ / h], the first A flow of air can be created from the first floor 5a to the second floor 5b.

Next, with reference to FIG. 5, the ventilation operation of the heat exchange type ventilation device 2 in the ventilation system 1 will be described in more detail. FIG. 5 is a flowchart showing a ventilation operation procedure in the heat exchange type ventilation device.

When the control unit 20 of the heat exchange type ventilator 2a receives a control signal regarding the start of operation from the operation unit 26, as shown in FIG. 5, the control unit 20 first exhausts the heat exchange type ventilator 2a. The air blower unit 24 and the air supply air blower unit 25 are operated independently to start ventilation of the first floor 5a (step S01). The heat exchange type ventilation device 2b also operates with a single setting to perform ventilation on the second floor 5b. Then, the control unit 20 receives second information (temperature of outdoor air) and third information (temperature and humidity of indoor air) from each sensor, and fourth information from each sensor of the heat exchange type ventilation device 2b. The difference in temperature and humidity between floors (between the first floor 5a and the second floor 5b) is the reference value based on (the temperature of the outdoor air on the second floor 5b, the temperature and humidity of the indoor air). It is determined whether or not the temperature exceeds (step S02). As a result, when the difference in temperature and humidity between the floors does not exceed the reference value (No in step S02), the control unit 20 continues to input a control signal regarding the shutdown of the heat exchange type ventilator 2. (Step S03) As a result, when the control signal for stopping the operation of the ventilation operation is not input (No in step S03), the control unit 20 exhausts the heat exchange type ventilation device 2a. The state in which the blower unit 24 and the air supply air blower unit 25 are operated independently is continued, and the process returns to step S02. On the other hand, when a control signal for stopping the operation of the ventilation operation is input (Yes in step S03), the control unit 20 stops the exhaust air blowing unit 24 and the air supply air blowing unit 25 of the heat exchange type ventilation device 2a (Yes). Step S04). Then, the control unit 20 ends the ventilation operation of the heat exchange type ventilation device 2a. As a result, the heat exchange type ventilation device 2a is in a state of waiting for an operation start instruction from the operation unit 26. The heat exchange type ventilation device 2b is also in the same state.

On the other hand, when at least one of the temperature difference and the humidity difference between the floors exceeds the reference value (Yes in step S02), the state in which at least one of the temperature difference and the humidity difference exceeds the reference value continues for a predetermined time. It is determined whether or not this has been done (step S05). Specifically, the difference in temperature and humidity is repeatedly detected, and the time measured with the time when the reference value is first exceeded in step S02 as the start time is determined by whether or not the predetermined time (first time T) has elapsed. judge. As a result, when the first time T has not elapsed (No in step S05), the control unit 20 continues to check whether at least one of the temperature difference and the humidity difference between the floors exceeds the reference value. (Return to step S02). On the other hand, when the first time T has elapsed (Yes in step S05), the control unit 20 operates the exhaust air blower unit 24 and the air supply air blower unit 25 of the heat exchange type ventilator 2a in an interlocking setting, and first. The interlocking ventilation of the floor 5a is started, and the exhaust air blowing unit 24 and the air supply air blowing unit 25 of the heat exchange type ventilation device 2b are operated in the interlocking setting to start the interlocking ventilation of the second floor 5b.

Then, during the operation of the interlocking ventilation, the control unit 20 determines whether or not a control signal for stopping the operation of the heat exchange type ventilation device 2 is input (step S07). As a result, when the control signal for stopping the operation of the ventilation operation is not input (No in step S07), the control unit 20 uses the heat exchange type ventilation device 2 (heat exchange type ventilation device 2a, heat exchange type ventilation device). The state in which the exhaust air blower unit 24 and the air supply air blower unit 25 of 2b) are operated in the interlocking setting is continued, and the process returns to step S02. On the other hand, when a control signal for stopping the operation of the ventilation operation is input (Yes in step S07), the control unit 20 stops the exhaust air blowing unit 24 and the air supply air blowing unit 25 of the heat exchange type ventilation device 2a (Yes). Step S08). Then, the control unit 20 ends the ventilation operation of the heat exchange type ventilation device 2a. As a result, the heat exchange type ventilation device 2a is in a state of waiting for an operation start instruction from the operation unit 26. The heat exchange type ventilation device 2b is also in the same state.

As described above, in the ventilation system 1, the control of the ventilation operation when the plurality of heat exchange type ventilation devices are independent and the control of the ventilation operation when the plurality of heat exchange type ventilation devices are interlocked are executed.

As described above, according to the ventilation system 1 according to the first embodiment, the following effects can be enjoyed.

(1) In the ventilation system 1 according to the present embodiment, when at least one of the temperature difference and the humidity difference between the floors exceeds the reference value, one of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b. The device of the above increases the ratio of the air supply air volume by the air supply air supply unit 25 to the exhaust air volume by the exhaust air blower unit 24, and the other device of the heat exchange type ventilator 2a and the heat exchange type ventilator 2b is the air supply air blower. The ratio of the exhaust air volume by the exhaust ventilation section 24 to the supply air volume by the section 25 is increased. As a result, the first floor 5a (or the second floor 5b) is in a pressurized state by increasing the ratio of the air supply amount to the exhaust amount of the heat exchange type ventilator 2a (or the heat exchange type ventilator 2b). By increasing the ratio of the exhaust amount to the air supply amount of the heat exchange type ventilator 2b (or the heat exchange type ventilator 2a), the second floor 5b (or the first floor 5a) is in a depressurized state. An air flow can be generated from the pressurized first floor 5a (or second floor 5b) to the decompressed second floor 5b (or first floor 5a). Then, the heat exchange type ventilation device 2b (or the heat exchange type ventilation device 2a) performs ventilation control that reflects the temperature and humidity (temperature and humidity of the exhaust flow 3) of the indoor air including the inflowing air. Become. That is, the heat exchange type ventilation device 2 installed on each floor of the residential building can be used to provide the ventilation system 1 capable of reducing the difference in temperature and humidity between the floors.

(2) In the ventilation system 1 according to the present embodiment, the control unit 20 of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b when the difference in temperature and humidity between the floors exceeds the reference value. In one device, the heat exchange type ventilator 2a and the other device of the heat exchange type ventilator 2b correspond to an increase in the ratio of the air supply air volume by the air supply air blower 25 to the exhaust air volume by the exhaust air blower 24. Control is performed to increase the ratio of the exhaust air volume by the exhaust air blower unit 24 to the air supply air volume by the air supply air blower unit 25. As a result, the temperature between floors and the temperature between floors and the state where the total ventilation volume including the ventilation volume of the heat exchange type ventilation device 2a and the ventilation volume of the heat exchange type ventilation device 2b is constant (the state where the required ventilation volume is secured) The difference in humidity can be reduced.

(3) In the ventilation system 1 according to the present embodiment, the control unit 20 performs ventilation operation and heat exchange type of the heat exchange type ventilation device 2a when the difference in temperature and humidity between the floors does not exceed the reference value. The ventilation operation of the ventilation device 2b is controlled independently. As a result, each floor can be efficiently ventilated by each heat exchange type ventilation device.

(4) In the ventilation system 1 according to the present embodiment, the control unit 20 is provided in one of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b, and is provided with the heat exchange type ventilation device 2a and the heat exchange type. It is preferable that the ventilation operation of the other device of the ventilation device 2b is controlled based on the control signal from one device of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b. More specifically, the control unit 20 is provided in the heat exchange type ventilation device 2a, and the ventilation operation of the heat exchange type ventilation device 2b is controlled based on the control signal from the heat exchange type ventilation device 2a. As a result, interlocking control between the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b can be performed with a simple configuration.

(Embodiment 2)
The ventilation system 1a according to the second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic view of a house provided with a ventilation system according to a second embodiment of the present invention.

The ventilation system 1a according to the second embodiment of the present invention is different from the first embodiment in that the ceiling fan 27 is installed on the ceiling of the space communicating the first floor 5a and the second floor 5b. The configuration of the ventilation system 1a other than this is the same as that of the ventilation system 1 according to the first embodiment. Hereinafter, the contents already explained in the first embodiment will be omitted again as appropriate, and the points different from the first embodiment will be mainly described.

As shown in FIG. 6, the ventilation system 1a according to the second embodiment of the present invention includes a heat exchange type ventilation device 2a that evokes the first floor 5a and a heat exchange type ventilation device 2b that ventilates the second floor 5b. It has a ceiling fan 27 that blows air on the ceiling of the space that communicates the first floor 5a and the second floor 5b. The heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b are ventilated by interlocking operation when at least one of the temperature difference and the humidity difference between the floors exceeds the reference value, as in the first embodiment. Is configured to do.

A blower such as a general ceiling fan is adopted for the ceiling fan 27. The ceiling fan 27 is installed on the ceiling surface of a space (atrium space) that communicates the first floor 5a and the second floor 5b. The ceiling fan 27 is configured to be able to switch between a first ventilation mode in which the airflow is blown down from the ceiling surface side to the floor surface side and a second ventilation mode in which the airflow is blown up from the floor surface side to the ceiling surface side. There is. The ceiling fan 27 is connected to the heat exchange type ventilation device 2 by a control signal line 8a, and ventilation control linked to the ventilation operation of the heat exchange type ventilation device 2 is possible.

Next, the ventilation operation at the time of interlocking in the ventilation system 1a will be described.

In the ventilation system 1, the control unit 20 of the heat exchange type ventilation device 2a supplies the exhaust air volume of the heat exchange type ventilation device 2b when either the temperature difference or the humidity difference between the floors exceeds the reference value. By increasing the ratio of the air volume and increasing the ratio of the exhaust air volume to the supply air volume of the heat exchange type ventilator 2a, the air flow from the second floor 5b to the first floor 5a was generated. On the other hand, in the ventilation system 1a, the control unit 20 controls the ceiling fan 27 to blow air in the first ventilation mode in conjunction with the interlocking ventilation of the heat exchange type ventilation device 2.

When the air flow from the first floor 5a to the second floor 5b is generated, the control unit 20 controls the ceiling fan 27 to switch to the second blowing mode to blow air.

As described above, according to the ventilation system 1a according to the second embodiment, the following effects can be enjoyed.

(5) The ventilation system 1a according to the second embodiment further includes a ceiling fan 27 provided on the ceiling of the space communicating the first floor 5a and the second floor 5b, and the control unit 20 is located between the floors. When at least one of the temperature difference and the humidity difference exceeds the reference value, the ventilation operation of the ceiling fan 27 is controlled in conjunction with the ventilation operation of the heat exchange type ventilation device 2a and the heat exchange type ventilation device 2b. It was configured. As a result, in addition to the air flow generated by the interlocking control between the heat exchange type ventilator 2a and the heat exchange type ventilator 2b, the air flow between the first floor 5a and the second floor 5b by the ceiling fan 27 Since the flow can be further generated, the difference in temperature and humidity between the floors can be further reduced.

(Embodiment 3)
The ventilation system 1b according to the third embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG. 7 is a schematic view of a house provided with a ventilation system according to a third embodiment of the present invention, and FIG. 8 is a block diagram showing a configuration of a control unit according to the third embodiment.

The ventilation system 1b according to the third embodiment of the present invention is implemented in that the control unit 20 is provided with a target wind speed calculation unit 20f for calculating a target wind speed satisfying a target value of a comfort index based on temperature and humidity information. Different from form 2. Other than this, the configuration of the ventilation system 1b is the same as that of the ventilation system 1a according to the second embodiment. Hereinafter, the contents already explained in the second embodiment will be omitted again as appropriate, and the points different from the second embodiment will be mainly described.

As shown in FIG. 8, the control unit 20 of the heat exchange type ventilation device 2a includes a target wind speed calculation unit 20f in the processing unit 20d.

The input unit 20a serves as a wind speed measuring unit, which includes information on the temperature of the outdoor air from the indoor air supply temperature sensor 21, information on the temperature and humidity of the indoor air from the indoor exhaust temperature sensor 22 and the indoor exhaust humidity sensor 23, and the wind speed measuring unit. Receives information about the indoor air speed from the wind speed sensor 28. Information about temperature refers to the value of Celsius temperature. Humidity information refers to relative humidity values. The information on the indoor wind speed refers to the value of the airflow velocity circulating on the first floor 5a and the second floor 5b (hereinafter, referred to as the indoor wind speed).

The target wind speed calculation unit 20f calculates a target wind speed that satisfies the target value of the comfort index based on the information on the temperature and humidity of the indoor air received by the input unit 20a. In this embodiment, Predicted Mean Vote (hereinafter referred to as PMV) is used as a comfort index.

PMV is translated as a predicted average warm / cold feeling report. PMV is calculated using (1) air temperature, (2) relative humidity, (3) average radiation temperature, (4) air flow velocity, (5) activity amount (internal calorific value of the human body), and (6) clothing amount. It is a numerical index to be used, and is expressed as an evaluation value of the following 7 stages.

+3: Hot +2: Warm +1: Slightly warm 0: Neither, comfortable -1: Slightly cool -2: Cool -3: Cold That is, it is predicted that the closer the evaluation value is to 0, the smaller the percentage of people who feel uncomfortable. If the sign is positive, it is predicted to feel hot, and if it is negative, it is predicted to feel cold. The range in which humans feel comfortable is set to -0.5 to +0.5. In the present embodiment, the target value of PMV is set to 0.

Once the values of (1) air temperature, (2) relative humidity, (3) average radiation temperature, (5) activity amount, and (6) clothing amount are determined, (4) airflow corresponding to the target PMV evaluation value. The speed can be calculated.

In the present embodiment, numerical values of (3) average radiation temperature, (5) activity amount, and (6) clothing amount are input to the storage unit 20b in advance as constants according to some patterns such as winter, summer, and intermediate period. Keep it. Then, the target wind speed satisfying the target value of PMV is calculated from the information on the temperature and humidity of the indoor air, and the output unit 20e receiving the information adjusts the operating output of the ceiling fan 27.

As shown in FIG. 7, the wind speed sensor 28 is installed on, for example, the floor surface or the wall surface of the first floor 5a in order to measure the indoor wind speed generated by the operation of the ceiling fan 27. The wind speed sensor 28 is connected to the input unit 20a by wire or wirelessly, and the processing unit 20d compares the indoor wind speed received by the input unit 20a with the target wind speed based on PMV. Then, if the indoor wind speed is higher than the target wind speed, the operating output of the ceiling fan 27 is reduced, and if the indoor wind speed is smaller than the target wind speed, the operating output of the ceiling fan 27 is increased to easily adjust to satisfy the target wind speed. It becomes possible.

Next, the operation of the ceiling fan 27 in the ventilation system 1b will be described in more detail with reference to FIG. FIG. 9 is a flowchart showing an operation procedure in the ceiling fan interlocking operation.

When the control signal for starting the operation of the ceiling fan 27 is input from the operation unit 26, the control unit 20 starts the operation of the ceiling fan 27 with the independent setting (step S11). At this time, the output (power consumption) of the ceiling fan 27 is set to W ₀ = W 1.

Next, the control unit 20 determines whether the temperature difference and the humidity difference between the floors exceed a predetermined reference value (for example, a temperature difference of 5 ° C. and a relative humidity difference of 10% RH). If at least one of the temperature difference and the humidity difference exceeds a predetermined reference value, the process returns to step S11 and the ceiling fan 27 continues to operate in a single setting.

If the temperature difference and humidity difference between the floors do not exceed the predetermined reference values, the target wind velocity calculation unit 20f will use the temperature average value and the temperature average value based on the information on the temperature and humidity of the first floor 5a and the second floor 5b. If the relative humidity average value (for example, the temperature of the first floor 5a is 28 ° C. and the relative humidity is 60% RH, and the temperature of the second floor 5b is 26 ° C. and the relative humidity is 56% RH, the temperature average value is 27 ° C. and relative. The average humidity value is 58% RH), and the target wind velocity V satisfying the target value (0 in the present embodiment) of the comfort index by PMV is calculated (step S13).

Next, the control unit 20 determines whether or not a predetermined time t1 (for example, 5 minutes) has elapsed since the operation of the ceiling fan 27 was started. The purpose of this is to wait for the airflow of the ceiling fan 27 circulating on the first floors 5a and 5b to stabilize. When the airflow is stable, the wind speed sensor 28 can accurately measure the airflow wind speed circulating in the first floor 5a and the second floor 5b. In addition, when waiting for the operation output of the ceiling fan 27 to stabilize, a longer time (for example, 30 minutes) may be secured as aging (warm-up operation).

After the lapse of the predetermined time t1, the wind speed sensor 28 measures the indoor wind speed. In the present embodiment, wind speed sensors 28 are provided at two locations on the floor surface and the wall surface of the first floor 5a. The wind speed sensor 28 measures the indoor wind speed at a predetermined time interval (for example, 1 second interval) for a fixed time (for example, 120 seconds), and outputs the average value to the control unit 20. The processing unit 20d averages the indoor wind speeds of the floor surface and the wall surface to calculate the wind speed V1 (step S15).

Next, the processing unit 20d determines whether the difference between the target wind speed V and the wind speed V1 exceeds a predetermined value ΔV (for example, 1 m / sec) (step S16).

When the predetermined value ΔV is exceeded, the processing unit 20d determines whether the target wind speed V is larger than the wind speed V1 (step S19).

When the target wind speed V is larger than the wind speed V1, the control unit 20 changes the output of the ceiling fan 27 to W _n = W _n-1 + b (step S20). When the target wind speed V is smaller than the wind speed V1, the control unit 20 changes the output of the ceiling fan 27 to W _n = W _n-1- b (step S21). Here, n is an integer of 1 or more. Further, b is a positive number that adjusts the increase / decrease in the output of the ceiling fan 27.

After changing the output of the ceiling fan 27, when the predetermined time t2 (for example, 5 minutes) elapses, the control unit 20 moves to the process of step S15. The purpose of providing the predetermined time t2 is the same as the purpose of providing the predetermined time t1. After that, as long as the difference between the target wind speed V and the wind speed V1 exceeds the reference value in step S16, steps S15, S16, S19, S20 (or S21), and S22 are repeated. Here, n in the first step S20 (or S21) is n = 1. Each time step S20 (or S21) is repeated, n = 2, 3, 4, ...

When the difference between the target wind speed V and the wind speed V1 does not exceed the reference value in step S16, the control unit 20 determines whether a signal for stopping the operation of the ceiling fan 27 is input from the operation unit 26 (step S17). If the operation stop signal is not input, the process proceeds to step S12. When the operation stop signal is input, the control unit 20 instructs the ceiling fan 27 to stop the operation (step S18).

As described above, according to the ventilation system 1b according to the third embodiment, the following effects can be enjoyed.

The ventilation system 1b according to the third embodiment is provided with a target wind speed calculation unit 20f for calculating a target wind speed satisfying a target value of the comfort index PMV based on temperature and humidity information in the control unit 20, and a ceiling fan based on the target wind speed. It was configured to control the operating output of 27. This makes it possible to further improve comfort while reducing the difference in temperature and humidity between floors.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily inferred. For example, the numerical values given in the above embodiment are examples, and it is naturally possible to adopt other numerical values.

The ventilation system according to the present invention is also effective for applications such as a duct-type heat exchange air system for the purpose of heat exchange between outside air and indoor air, and a duct-type air conditioner.

1 Ventilation system 1a Ventilation system 1b Ventilation system 2 Heat exchange type ventilation device 2a Heat exchange type ventilation device 2b Heat exchange type ventilation system 3 Exhaust flow 4 Air supply 5a First floor 5b Second floor 6 Exhaust duct 7 Air supply duct 8 Control signal line 8a Control signal line 9 Outside air suction port 10 Indoor air air exhaust port 11 Outside air air supply port 12 Indoor air suction port 13 Heat exchange element 14 Supply air air passage 15 Exhaust air passage 16 Air supply fan 17 Exhaust fan 18 Supply Air motor 19 Exhaust motor 20 Control unit 20a Input unit 20b Storage unit 20c Timing unit 20d Processing unit 20e Output unit 20f Target wind speed calculation unit 21 Indoor air supply temperature sensor 22 Indoor exhaust temperature sensor 23 Indoor exhaust humidity sensor 24 Exhaust air blower 25 Air supply air blower 26 Operation part 27 Ceiling fan 28 Wind speed sensor 100 Building

Claims (11)

The first ventilation system that supplies and exhausts the first floor,
A second ventilation system that supplies and exhausts air from the second floor, which is different from the first floor,
A control unit that controls the supply / exhaust operation of the first ventilation device and the supply / exhaust operation of the second ventilation device is provided.
When at least one of the temperature difference and the humidity difference between the first floor and the second floor exceeds a predetermined reference value, the control unit of the first ventilation device and the second ventilation device. Increasing the ratio of the air supply amount to the exhaust amount of one of the devices and increasing the ratio of the exhaust amount to the air supply amount of the first ventilation device and the other device of the second ventilation device. Characterized ventilation system. The control unit has the first ventilation device and the first ventilator so that the ratio of the increase in the air supply amount to the exhaust amount of the one device is equal to the ratio of the increase in the exhaust amount to the air supply amount of the other device. (Ii) The ventilation system according to claim 1, wherein the operation of the ventilation device is controlled. The control unit independently controls the air supply / exhaust operation of the first ventilation device and the air supply / exhaust operation of the second ventilation device when the temperature difference and the humidity difference do not exceed the reference value. The ventilation system according to claim 1, wherein the ventilation system is provided. The control unit is provided in one of the devices.
The ventilation system according to claim 1, wherein the air supply / exhaust operation of the other device is controlled based on a control signal from the one device. Further provided with a blower provided in a space communicating the first floor and the second floor.
1. The control unit is characterized in that, when the reference value is exceeded, the control unit controls the ventilation operation of the blower in conjunction with the supply / exhaust operation of the first ventilation device and the second ventilation device. Ventilation system described. The ventilation system according to claim 5, wherein the control unit controls the blower so as to blow air from the pressurized floor to the decompressed floor. The ventilation system according to claim 1, wherein the first ventilation device and the second ventilation device include a heat exchange element that exchanges heat between an air supply air passage and an exhaust air passage. The control unit includes a target wind speed calculation unit that calculates a target wind speed that satisfies the target value of the comfort index based on temperature and humidity information.
When the temperature difference and the humidity difference do not exceed the reference value, the temperature average value between the first floor and the second floor and the humidity average between the first floor and the second floor. The ventilation system according to claim 5, wherein the operation of the blower is controlled so as to have the target wind speed satisfying the target value of the comfort index based on the value. Equipped with at least one wind speed measuring unit to measure the wind speed
The control unit is characterized in that when the wind speed difference between the measured average value of the wind speed and the target wind speed exceeds a predetermined reference value, the operation of the blower is controlled so as to satisfy the target wind speed. The ventilation system according to claim 8. The ventilation system according to claim 9, wherein the control unit calculates an average value of wind speed after a predetermined time has elapsed from the start of operation of the blower. The ventilation system according to claim 8, wherein a predicted average warm / cold feeling report (PMV) is used as the comfort index.