JP2019027606A - Heat exchange-type ventilation device - Google Patents

Abstract

To provide a heat exchange-type ventilation device which, when connected to a unitary air conditioner, can increase the temperature adjustment efficiency of the unitary air conditioner by eliminating the introduction of outside air at the start of the temperature adjustment of the unitary air conditioner.SOLUTION: When an indoor temperature detected by indoor temperature detection means is taken as T, a preset temperature of a unitary air conditioner as T, and specified temperatures as α, α, a control unit 11 of the heat exchange-type ventilation device performs control such that "an exhaust blower 10 is OFF" and "a supply-air volume damper 16 is closed" are brought if "a unitary air conditioner 14 is ON" and "T≤T-αor T+α≤T" hold true and that "the exhaust blower 10 is ON" and "the supply-air volume damper 16 is open" are brought if "the unitary air conditioner 14 is ON" and "T-α<T<T+α" hold true.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a heat exchange type ventilator for exchanging heat between outside air and room air.

  Conventionally, as this type of ventilator, a heat exchange type ventilator that is installed in a building, introduces outside air from an outside air supply port, and supplies the inside through a built-in heat exchange element is known (for example, a patent) Reference 1).

  Hereinafter, the heat exchange type ventilator will be described with reference to FIG.

  As shown in FIG. 7, the ventilator main body 101 is installed in an attic space or a ceiling space in a building.

  Fresh outside air is introduced from the outside air inlet 102, passes through the built-in heat exchange element 103, and is supplied to the room through the indoor inlet 104.

  On the other hand, the dirty air in the room is introduced from the indoor exhaust port 105, passes through the heat exchange element 103, and is exhausted to the outside through the outdoor exhaust port 106.

  Fresh fresh air introduced from the outside air supply port 102 and indoor dirty air introduced from the indoor exhaust port 105 are connected to the air supply fan 109 connected to the electric motor 107 on the same shaft 108 via the heat exchange element 103. It is configured to be transferred by the exhaust fan 110.

JP-A-11-325535

  In order to ventilate the heat exchange type ventilator, it is necessary to adjust the air volume in the supply path or the exhaust path.

  When connecting the air supply path (or exhaust path) of a conventional heat exchange type ventilator and the circulation air path of unitary air conditioning, the unitary air conditioner communicates with the outside air through the heat exchange type ventilator. If outside air is introduced during operation, there is a problem that the efficiency of temperature adjustment of the unitary air conditioning is reduced as compared with a case where indoor air is circulated without introducing outside air.

  Therefore, the present invention realizes a heat exchange type ventilator that can increase the temperature regulation efficiency of unitary air conditioning by suppressing the introduction of outside air when the room temperature is not within a predetermined range with respect to the set temperature of unitary air conditioning. With the goal.

In order to achieve this object, a heat exchange ventilator according to an aspect of the present invention includes an air supply fan provided with an air supply motor, an exhaust air fan provided with an exhaust motor, and the supply air An air supply path that blows air from the outside to the room indoors by an air blower, an exhaust path that blows air from the room to the outdoors by the exhaust air blower, and a position where the air supply path and the exhaust path intersect, In a heat exchange type ventilator comprising a heat exchange element for exchanging heat when ventilating the air and outdoor air and an air supply air volume adjustment damper provided in the air supply path, Controls ON / OFF of the air supply blower, ON / OFF of the exhaust air blower, and opening / closing of the air supply air amount adjustment damper, and the air supply path is directly connected to a circulation air path of unitary air conditioning. The exhaust path is the circulation Is directly connected to the indoor space other than road, said exhaust path in an even and an indoor temperature detection means provided on the upstream side of the heat exchange element, the indoor temperature room temperature detected by the detection means T _i, the unitary Assuming that the set temperature of the air conditioning is T _u and the predetermined temperatures are α ₁ and α ₂ , the control unit determines that “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”. In this case, control is performed so that “the exhaust fan is OFF” and “the supply air volume adjustment damper is closed”, “the unitary air conditioning is ON”, and “T _u −α ₁ <T _i <T. _u + α ₂ ”, the control is performed so that“ the exhaust fan is ON ”and“ the supply air volume adjustment damper is open ”. To achieve.

  ADVANTAGE OF THE INVENTION According to this invention, when there is no room temperature in the predetermined range with respect to the setting temperature of unitary air conditioning, the heat exchange type | formula ventilation apparatus which can raise the temperature control efficiency of unitary air conditioning can be provided by suppressing external air introduction | transduction. .

Top sectional drawing which shows the heat exchange type | mold ventilation apparatus of Embodiment 1 of this invention Diagram showing the construction of the heat exchange ventilator Control block diagram of the heat exchange type ventilator of FIG. The figure which shows other construction of the heat exchange type ventilator Control block diagram of the heat exchange type ventilator of FIG. The figure which shows other construction of the heat exchange type ventilator Side configuration diagram showing a conventional heat exchange ventilator

A heat exchange type ventilator according to an aspect of the present invention is fed into a room from the outside by an air supply fan provided with an air supply motor, an exhaust air fan provided with an exhaust motor, and the air supply fan. An air supply path, an exhaust path that is blown from the room to the outside by the exhaust fan, and a position where the air supply path and the exhaust path intersect to ventilate indoor air and outdoor air. In the heat exchange type ventilator provided with a heat exchange element for exchanging heat and an air supply air volume adjusting damper provided in the air supply path, the controller turns ON / OFF the air supply fan, The on / off control of the exhaust fan and the opening / closing of the supply air volume adjustment damper are controlled, the supply air path is directly connected to a circulation air passage of unitary air conditioning, and the exhaust air passage is the circulation air passage. Connected directly to other indoor spaces The A in the exhaust path a room temperature detecting means provided on the upstream side of the heat exchange element, the indoor temperature room temperature detected by the detection means T _i, the unitary air-conditioning set temperature T _u, a predetermined temperature Assuming α ₁ and α ₂ , the control unit determines that “the exhaust air blower is turned on” when “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”. “OFF” and “the supply air volume adjustment damper is closed”, and when “the unitary air conditioning is ON” and “T _u −α ₁ <T _i <T _u + α ₂ ”, The exhaust air blower is turned on and the air supply air volume adjustment damper is opened.

  Thereby, by suppressing the introduction of outside air during operation of unitary air conditioning, the load on unitary air conditioning can be reduced and the power consumption of unitary air conditioning can be reduced, and the indoor environment can be quickly air-conditioned to quickly realize a comfortable environment.

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

(Embodiment 1)
The internal configuration, the air supply path, and the exhaust path of the heat exchange type ventilator according to the first embodiment will be described with reference to FIG.

  As shown in FIG. 1, a heat exchange ventilator 1 includes an outside air suction port 2 and an indoor air exhaust port 3 on the side surface of a box-shaped main body, and an outside air supply port 4 and room air on the side surface facing this side surface. A suction port 5 is provided.

  Further, the heat exchange ventilator 1 draws fresh outdoor air (supply air) from the side outside air inlet 2 and passes through the heat exchange element 6 inside the heat exchange type ventilator 1 to the outside air inlet. An air supply path 7 is provided from 4 to the room.

  On the other hand, the contaminated indoor air (exhaust air) is sucked in from the indoor air intake port 5, and has an exhaust path 8 through which the air is exhausted from the indoor air exhaust port 3 through the heat exchange element 6. At this time, the heat exchange element 6 has a heat recovery function of supplying the amount of heat of exhausted air to the supplied air, or supplying the amount of heat of supplied air to the amount of heat of exhausted air. Have.

  Fresh outdoor air (supply air) introduced from the outside air inlet 2 and contaminated indoor air (exhaust air) introduced from the indoor air inlet 5 are an air supply fan 9 and an exhaust fan 10. , The air flow path 7 and the exhaust path 8 respectively flow.

  The heat exchange element 6 is disposed at a position where the air supply path 7 and the exhaust path 8 intersect. An air cleaning filter 12 is disposed on each of the outdoor air suction side and the indoor air suction side of the heat exchange element 6. In addition, ducts can be connected to the outside air inlet 2, the indoor air outlet 3, the outside air inlet 4, and the room air inlet 5, respectively.

  An indoor temperature detecting means 13 for detecting the indoor temperature is provided in the exhaust path 8 and upstream of the heat exchange element 6.

  Here, the characteristic part in the present embodiment, that is, the air volume adjustment damper operation and the product operation of the control unit 11 will be described.

  FIG. 2 shows a construction diagram of the present embodiment. The unitary air conditioner 14 is installed in a machine room or the like in the building, and is connected to the room by a duct to form a circulation air passage 15 in the room.

  The unitary air conditioner 14 performs cooling and heating so that the set indoor temperature is reached, blows air to the circulation air passage 15, and controls the indoor to a predetermined temperature by circulating air through a plurality of indoor rooms. To do.

  The normal circulation air path is a temperature control path through the unitary air conditioner 14, and indoor ventilation is not performed, and indoor fresh air is not supplied. Therefore, by connecting the air supply path 7 to the circulation air passage 15, heat is exchanged at the same time while adjusting the temperature by indoor circulation, and fresh outdoor air is taken indoors while recovering heat. At this time, the air supply path 7 on the downstream side of the heat exchange element 6 is connected to the circulation air path 15 of the unitary air conditioner 14.

  At this time, the unitary air conditioner 14 performs indoor circulation operation, but negative pressure is applied to the outside air supply port 4 of the heat exchange type ventilation device 1 by the air blowing function of the unitary air conditioner 14. As a result, the air flow path 7 of the heat exchange type ventilator 1 is pulled by the unitary air conditioner 14 so that the air volume exceeding the design flows. Especially in the winter season, a large amount of low-temperature outside air flows, causing problems such as condensation. there is a possibility. In order to suppress this, an air supply air volume adjustment damper 16 for offsetting the negative pressure from the unitary air conditioner 14 between the heat exchange type ventilation device 1 and the circulation air passage 15 of the unitary air conditioner 14 in the air supply path 7. Is provided. The supply air volume adjustment damper 16 determines the damper angle by adjusting the opening area (opening ratio) so as to be a predetermined air volume while actually measuring the supply air volume of the heat exchange ventilator 1.

  While adjusting the temperature by indoor circulation by the unitary air conditioner 14, heat exchange air can be simultaneously performed by the heat exchange type ventilator 1, and ventilation to be taken indoors while collecting fresh outdoor air can be performed.

  On the other hand, especially when unitary air conditioning is activated, when the temperature of the room is adjusted to the set temperature, the introduction of outside air after heat exchange into the circulation air passage 15 during heating in the winter, for example, is more effective than air circulation. The load is increased, and the time for the room to reach the set temperature is increased.

  The same applies to the cooling in summer. That is, introduction of outside air after heat exchange during cooling in the summer increases the air conditioning load compared to the circulation operation, and the time for the room to reach the set temperature becomes longer.

  In the present embodiment, as shown in FIG. 3, the control unit 11 controls the air supply fan 9, the exhaust air fan 10, and the air supply air amount adjustment damper 16. By suppressing the introduction of outside air during unitary air conditioning operation, the load on unitary air conditioning can be reduced and the power consumption of unitary air conditioning can be reduced, and the indoor environment can be quickly air-conditioned to quickly realize a comfortable environment.

  The control unit 11 performs control by comparing the room temperature obtained from the room temperature detection means 13 with the set temperature of the unitary air conditioner 14.

Specifically, the control operation of FIG. 3 will be described. In FIG. 3, the room temperature detected by the room temperature detection means 13 is T _i , the set temperature of the unitary air conditioner 14 is T _u , and the predetermined temperatures are α ₁ and α ₂ .

  While the unitary air conditioner 14 is stopped, the heat exchange type ventilator 1 is not operated.

  When the unitary air conditioner 14 is activated to adjust the room temperature, the heat exchange ventilator 1 does not immediately start the heat exchange air operation.

  First, the control unit 11 starts only the exhaust blower 10 while closing the air supply air volume adjustment damper 16 in the air supply path 7 and introduces indoor air into the heat exchange ventilator 1.

When the room temperature T _i is detected by the room temperature detection means 13 in the heat exchange type ventilator 1 and T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i , the control unit 11 temperature T _i is determined not to have reached the unitary air-conditioning set temperature T _u close the exhaust blower 10 was stopped and the supply air flow rate control damper 16 is controlled to be closed.

Thereby, unitary air-conditioning 14 carries out indoor circulation operation. T ₁ hour after the circulation operation of the unitary air conditioner 14 only continues for a predetermined time, to start the air discharge fan 10 again detects the indoor temperature T _i at room temperature detecting means 13.

At this time, if T _u −α ₁ <T _i <T _u + α ₂ , the control unit 11 determines that the room temperature T _i has reached the unitary air conditioning set temperature T _u , and the exhaust blower 10 and The supply air blower 9 is activated and the supply air volume adjustment damper 16 is controlled to open.

Thus, after the indoor temperature reaches near the set temperature T _u of the unitary air conditioner 14 starts the heat exchange type ventilator 1, outdoor fresh air can continue ventilation to incorporate indoors while heat recovery. Then, if it becomes _{T i} ≦ _T u _{-α 1} or _{T u + α 2 ≦ T i} , the control unit 11 determines that the indoor temperature _{T i} has not reached the unitary air-conditioning set temperature _{T u} close, The exhaust blower 10 is stopped and the supply air volume adjustment damper 16 is controlled to be closed, and the indoor circulation operation is performed again for t ₁ hours using only the unitary air conditioner 14.

When the set temperature _{T u} of the unitary air conditioner 14 is changed in the middle, the control unit 11 detects the indoor temperature _{T i} at room temperature detecting means _13, in _{T u -α 1 <T i <} T u + α 2 Check if it exists. When _Tu −α ₁ <T _i <T _u + α ₂ , the control unit 11 opens the supply air volume adjustment damper 16 again, operates the supply air fan 9 and the exhaust air fan 10, and performs heat exchange operation. Continue.

Thereafter, when the set temperature _Tu is not changed, the indoor temperature _Ti is detected again after a predetermined time t ₂ and the indoor environment is confirmed. When T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i , the supply air volume adjustment damper 16 is closed, the supply air fan 9 and the exhaust air fan 10 are stopped, and the unitary air conditioner 14 is circulated. And adjust the room temperature.

By performing the control shown in FIG. 3, first, the indoor environment thermostated with a small load to a set temperature T _u Near unitary air conditioner 14, as soon reach room environment near the target temperature, performs heat exchange of gas operation, the heat recovery A comfortable environment can be realized while saving energy while taking in fresh air.

In FIG. 3, the air supply blower is turned off when “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, but the air supply blower may be left on. This is because the supply air volume adjustment damper is closed, so that the supply air can be stopped even if the supply air blower is turned on.

  Moreover, you may connect the exhaust path 8 to the indoor circulation air path 15 like the figure which shows the other construction of FIG. The unitary air conditioner 14 performs indoor circulation operation, but negative pressure is applied to the indoor air suction port 5 of the heat exchange type ventilator 1 by the air blowing function of the unitary air conditioner 14. As a result, the design air volume cannot flow through the exhaust path 8 of the heat exchange type ventilator 1 by being pulled by the unitary air conditioner 14, and in the winter season, the indoor air volume that is hot relative to the low-temperature outside air volume is difficult to flow. Therefore, the outside air that does not exchange heat may flow directly into the room through the air supply path 7, which may cause problems such as condensation or a feeling of cold wind. In order to suppress this, an exhaust air volume adjustment damper 17 for offsetting the negative pressure from the unitary air conditioner 14 is provided between the heat exchange type ventilation device 1 and the circulation air path 15 of the unitary air conditioner 14 in the exhaust path 8. . The exhaust air volume adjustment damper 17 determines the damper angle by adjusting the opening area (opening ratio) so as to be a predetermined air volume while actually measuring the exhaust air volume of the heat exchange type ventilation device 1.

Specifically, the control operation of FIG. 5 will be described. In FIG. 5, the room temperature detected by the room temperature detection means 13 is T _i , the set temperature of the unitary air conditioner 14 is T _u , and the predetermined temperatures are α ₁ and α ₂ .

  While the unitary air conditioner 14 is stopped, the heat exchange type ventilator 1 is not operated.

  When the unitary air conditioner 14 is activated to adjust the room temperature, the heat exchange ventilator 1 does not immediately start the heat exchange air operation.

  First, the control unit 11 closes the supply air volume adjustment damper 16 in the supply air path 7, opens the exhaust air volume adjustment damper 17 in the exhaust path 8, activates only the exhaust fan 10, and heat-exchanges the room air. Introduce into the device 1.

When the room temperature T _i is detected by the room temperature detection means 13 in the heat exchange type ventilator 1 and T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i , the control unit 11 temperature T _i is determined not to have reached the unitary air-conditioning set temperature T _u close the exhaust blower 10 was stopped and the supply air flow rate control damper 16 and the exhaust air volume adjusting damper 17 is controlled to be closed.

Thereby, unitary air-conditioning 14 carries out indoor circulation operation. T ₁ hour after the circulation operation of the unitary air conditioner 14 only continues for a predetermined time, to start the air discharge fan 10 again, to open the exhaust air flow control damper 17, for detecting the indoor temperature T _i at room temperature detecting means 13.

At this time, if T _u −α ₁ <T _i <T _u + α _2, it is determined that the room temperature T _i has reached the unitary air conditioning set temperature T _u , and the exhaust blower 10 and the supply blower 9 are determined. And the supply air volume adjustment damper 16 and the exhaust air volume adjustment damper 17 are controlled to open.

Thus, after the indoor temperature T _i has reached the unitary air conditioner 14 set temperature T _u near activates the heat exchange type ventilator 1, outdoor fresh air can continue ventilation to incorporate indoors while heat recovery. Thereafter, if T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i , it is determined that the room temperature T _i has not reached the unitary air conditioning set temperature T _u , and the air supply air amount adjustment damper 16 and the exhaust air volume adjusting damper 17 are controlled to be closed, and the indoor circulation operation is performed again for t ₁ hours using only the unitary air conditioner 14 again.

When the set temperature _{T u} of the unitary air conditioner 14 is changed in the middle, the control unit 11 detects the indoor temperature _{T i} at room temperature detecting means _13, in _{T u -α 1 <T i <} T u + α 2 Check if it exists. When T _u −α ₁ <T _i <T _u + α ₂ , the control unit 11 opens the supply air amount adjustment damper 16 and the exhaust air amount adjustment damper 17 again, and opens the supply air fan 9 and the exhaust air fan 10. Operate and continue heat exchange operation.

Thereafter, when the set temperature _Tu is not changed, the indoor temperature _Ti is detected again after a predetermined time t ₂ and the indoor environment is confirmed. When T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i , the supply air amount adjustment damper 16 and the exhaust air amount adjustment damper 17 are closed, the supply air fan 9 and the exhaust air fan 10 are stopped, The unitary air conditioner 14 is circulated and the room temperature is adjusted.

By performing the control shown in FIG. 5, first, the indoor environment thermostated with a small load to a set temperature T _u Near unitary air conditioner 14, as soon reach room environment near the target temperature, performs heat exchange of gas operation, the heat recovery A comfortable environment can be realized while saving energy while taking in fresh air.

In FIG. 5, when “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, the air supply blower and the exhaust blower are turned off, but the air supply blower and / or the exhaust blower are turned off. The blower may be left on. This is because the supply air volume adjustment damper and the exhaust air volume adjustment damper are closed, so that supply and exhaust can be stopped even if the supply air fan and / or the exhaust air fan are turned on. .

  Further, as shown in FIG. 6, the supply air volume adjustment damper 16 and the exhaust air volume adjustment damper 17 may be provided inside the main body of the heat exchange type ventilation apparatus 1.

  Further, although not shown, the supply air volume adjustment damper 16 of FIG. 2 may be provided inside the main body of the heat exchange type ventilation apparatus 1.

  Hereinafter, this embodiment will be supplemented.

  The unitary air conditioning 14 includes the concept of whole building air conditioning or central air conditioning.

  Moreover, although the control part 11 was provided in the heat exchange type ventilator 1, it does not need to be provided in the heat exchange type ventilator 1. FIG. In this case, control is performed by the control unit 11 located at a position away from the heat exchange ventilator 1.

Α ₁ is a constant that can take any value of 1 ° C., for example, 0.1 ° C. to 3 ° C.

Α ₂ is a constant that can take any value of 1 ° C., for example, 0.1 ° C. to 3 ° C.

  Further, “the supply air volume adjustment damper is closed” includes the case where the supply air volume adjustment damper is fully closed. “The exhaust air volume adjustment damper is closed” includes the case where the exhaust air volume adjustment damper is fully closed.

  In addition, the heat exchange type ventilator 1 is not operated while the unitary air conditioner 14 is stopped, but the heat exchange type ventilator 1 can be operated even when the unitary air conditioner 14 is stopped. In this case, if a communication port that communicates with the room is separately provided in the circulation air passage 15, an air passage that does not pass through the unitary air conditioning 14 can be formed, so that a smooth heat exchange operation can be performed. At this time, it is preferable that the communication port provided in the circulation air passage 15 can be opened and closed, and it is preferably closed when the unitary air conditioning is ON, and is open when the unitary air conditioning is OFF.

  In the embodiment, the air supply path 7 is connected to the circulation air path 15 on the upstream side of the unitary air conditioning 14, but may be connected to the circulation air path 15 on the downstream side of the unitary air conditioning 14.

  As mentioned above, although the heat exchange type ventilator which concerns on this invention was demonstrated based on embodiment, this invention is not limited to embodiment. Unless it deviates from the meaning of this invention, the form which carried out the various deformation | transformation which those skilled in the art can think to this embodiment, and the structure constructed | assembled combining the component in different embodiment is also contained in the scope of the present invention. .

The ventilator according to the present invention is also effective for applications such as a duct-type ventilator and a duct-type air conditioner for the purpose of exchanging heat between outside air and room air.

DESCRIPTION OF SYMBOLS 1 Heat exchange type ventilator 2 Outside air suction port 3 Indoor air exhaust port 4 Outside air supply port 5 Indoor air suction port 6 Heat exchange element 7 Air supply path 8 Exhaust path 9 Supply air blower 10 Exhaust air blower 11 Control part 12 Air Clean filter 13 Indoor temperature detection means 14 Unitary air conditioning 15 Circulating air passage 16 Supply air volume adjustment damper 17 Exhaust air volume adjustment damper

Claims (7)

An air supply fan equipped with an air supply motor;
An exhaust fan equipped with an exhaust motor;
An air supply path to be blown indoors from the outside by the air supply fan;
An exhaust path for blowing air from the room to the outside by the exhaust fan;
A heat exchange element provided at a position where the air supply path and the exhaust path intersect, and for exchanging heat when ventilating indoor air and outdoor air;
In a heat exchange type ventilator provided with an air supply air volume adjustment damper provided in the air supply path,
The controller controls ON / OFF of the air supply blower, ON / OFF of the exhaust air blower, and opening / closing of the air supply air amount adjustment damper,
The air supply path is directly connected to the circulation air path of unitary air conditioning,
The exhaust path is directly connected to an indoor space other than the circulation air path,
An indoor temperature detecting means is provided in the exhaust path and upstream of the heat exchange element,
The indoor temperature detector T a room temperature detected by _i, the unitary air-conditioning set temperature T _{u, 1} a predetermined temperature _alpha, when the alpha _2,
The controller is
When “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, “the exhaust fan is OFF” and “the supply air amount adjustment damper is closed” Control to be
When “the unitary air conditioning is ON” and “T _u −α ₁ <T _i <T _u + α ₂ ”, “the exhaust fan is ON” and “the supply air amount adjustment damper is open”. A heat exchange type ventilator characterized by being controlled. The controller is
When “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, control is performed so that “the air supply blower is OFF”. The heat exchange ventilator according to claim 1. The controller is
If the set temperature _{T u} of the unitary air-conditioning has been changed, to see if it meets the _{"T u -α 1 <T i <} T u + α 2 " again,
When “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, “the exhaust fan is OFF” and “the supply air amount adjustment damper is closed” Control to be
When “the unitary air conditioning is ON” and “T _u −α ₁ <T _i <T _u + α ₂ ”, “the exhaust fan is ON” and “the supply air amount adjustment damper is open”. The heat exchange type ventilator according to claim 1 or 2, wherein An air supply fan equipped with an air supply motor;
An exhaust fan equipped with an exhaust motor;
An air supply path to be blown indoors from the outside by the air supply fan;
An exhaust path for blowing air from the room to the outside by the exhaust fan;
A heat exchange element provided at a position where the air supply path and the exhaust path intersect, and for exchanging heat when ventilating indoor air and outdoor air;
An air supply amount adjustment damper provided in the air supply path;
In a heat exchange type ventilator provided with an exhaust air volume adjustment damper provided in the exhaust path,
The controller controls ON / OFF of the air supply blower, ON / OFF of the exhaust air blower, opening / closing of the air supply air amount adjustment damper, and opening / closing of the exhaust air amount adjustment damper,
The air supply path is directly connected to the circulation air path of unitary air conditioning,
The exhaust path is directly connected to the circulation air path,
An indoor temperature detecting means is provided in the exhaust path and upstream of the heat exchange element,
When the indoor temperature detected by the indoor temperature detecting means is T _i , the set temperature of the unitary air conditioning is T _u , and the predetermined temperatures are α ₁ and α ₂ ,
The controller is
When “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, “the supply air volume adjustment damper is closed” and “the exhaust air volume adjustment damper is closed” "
When “the unitary air conditioning is ON” and “T _u −α ₁ <T _i <T _u + α ₂ ”, “the air supply fan is ON” and “the exhaust air fan is ON” and “the air supply is ON” The heat exchange type ventilator is controlled so that the air volume adjustment damper is open and the exhaust air volume adjustment damper is open. The controller is
When “the unitary air-conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, the “supply fan and / or the exhaust fan is OFF”. The heat exchange type ventilator according to claim 4, wherein the heat exchange type ventilator is controlled. The controller is
If the set temperature _{T u} of the unitary air-conditioning has been changed, to see if it meets the _{"T u -α 1 <T i <} T u + α 2 " again,
When “the unitary air conditioning is ON” and “T _i ≦ T _u −α ₁ or T _u + α ₂ ≦ T _i ”, “the supply air volume adjustment damper is closed” and “the exhaust air volume adjustment damper is closed” "
When “the unitary air conditioning is ON” and “T _u −α ₁ <T _i <T _u + α ₂ ”, “the air supply fan is ON” and “the exhaust air fan is ON” and “the air supply is ON” 6. The heat exchange type ventilator according to claim 4, wherein control is performed so that the air volume adjustment damper is open and the exhaust air volume adjustment damper is open. A housing for storing the air supply fan, the exhaust air fan, and the heat exchange element;
The heat exchange type ventilation apparatus according to any one of claims 1 to 6, wherein the supply air volume adjustment damper is provided inside the casing.

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