JP2550731B2 - Heat exchange ventilator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heat exchange ventilator used in an office or the like having an odor generating part such as a kitchen or a toilet.

(Prior Art) Conventionally, this type of heat exchange ventilator has been disclosed in, for example, JP-A-60-54.
As described in Japanese Patent No. 037 and shown in FIG. 5,
The main casing (A) has indoor and outdoor air supply ports (B) and (C) for supplying outdoor air to the room, and indoor and outdoor air exhaust ports (for exhausting indoor air to the outside). D)
(E) is provided, an indoor air supply fan (F) is provided near the indoor air supply port (B), and the outdoor air exhaust port (E) is provided.
An outdoor exhaust fan (G) is provided near each.

Furthermore, inside the center of the casing (A), between the outdoor air passing through the air supply passage (H) between the air supply ports (B) and (C) and the exhaust ports (D) and (E). Exhaust passage (J)
A heat exchanger (K) capable of exchanging heat with the indoor air passing through the heat exchanger (K) is provided, while a bypass passage (L) is formed to bypass the heat exchanger (K). A switching damper (M) is provided at (L).

Then, the bypass passage (L) is formed by the damper (M).
By closing the above, while the indoor and outdoor air passing through the supply / exhaust passages (H) (J) is heat-exchanged by the heat exchanger (K) along the path shown by the solid line arrow in FIG. , So-called heat exchange ventilation, and the damper (M)
By opening the bypass passage (L) at, the indoor and outdoor are directly ventilated without passing through the heat exchanger (K) as shown by the phantom line arrow in FIG. I'm trying to do.

Further, the supply and exhaust fans (F) (G) used in the above heat exchange ventilation device are set to have the same supply and exhaust air flow rates in order to prevent pressure fluctuations inside the room. .

(Problems to be Solved by the Invention) By the way, as shown in FIG. 4 which will be described later, the room (Z) requiring ventilation and the room (Z) are formed separately from each other, and the room (Z) is formed. In an office or the like that has an odor generating part (KT, T) such as a kitchen or a toilet in which the circulation of air and air is allowed, the odor generating part (KT, T) is provided with a ventilation fan (FA) and the like. ), The odor generated in the odor generating part (KT, T) is discharged to the outside, but the airtightness of the room has been improved in recent years, and the odor generated in the room (Z) of the above office has been improved. When using a heat exchange ventilator,
Since the supply and exhaust fan (F) (G) supply and exhaust air volume are set to be the same and there is no atmospheric pressure fluctuation inside the room, the odor generated in the odor generating unit is ) That is, there was a problem that it spreads in the office zone and makes the occupants feel uncomfortable.

The present invention has been made in view of the above problems, and an object thereof is to perform ventilation with less pressure fluctuation in the office zone, and when an odor is generated in the odor generating part, generate the odor in the office zone. It is an object of the present invention to provide a heat exchange ventilator that can give a comfortable feeling to the occupants at all times by allowing the air to be quickly discharged to the outdoors without being diffused.

(Means for Solving the Problems) In order to achieve the above object, the invention according to claim 1 is
The room (Z) that requires ventilation and the room (Z) and the room (Z) and an odor generating section (KT, T) in which the circulation of air is allowed are provided, and the room Generator (KT, T)
Further, in a heat exchange ventilation device for ventilating the room (Z) in a facility provided with an odor discharging unit (FA) for discharging the odor to the outside, a room for supplying outdoor air to the room (Z) and Outdoor air supply ports (11) (12) and the indoor space (Z)
Indoor and outdoor exhaust ports (13) and (14) for exhausting the outdoor air, an indoor air supply fan (2), an outdoor exhaust fan (3), and the fans (2) (3). Controller) (7) capable of performing supercharging operation in which the amount of air supplied from the indoor air supply port (11) is adjusted to be larger than the amount of air discharged from the outdoor air exhaust port (14) The odor generation unit (KT, T) is provided with an odor generation detection unit (6) for detecting odor generation, and the odor generation signal of the odor generation detection unit (6) is supplied to the controller (7). Is input to switch from the same supply / exhaust amount operation to the supercharging operation.

Furthermore, in the invention according to claim 2, in the invention according to claim 1, at least one of the fans (2) and (3) is a variable capacity fan, and the indoor air supply port (11)
It is possible to adjust the amount of air supplied from the chamber and the amount of exhaust from the outdoor exhaust port (14).

Further, in the invention according to claim 3, in the invention according to claim 1 or claim 2, the odor discharge part (FA) is composed of a ventilation fan, and the odor generation detection part (6) is an operation switch of the ventilation fan. The ON signal given by the ON operation to the operation switch is the odor generation signal.

(Operation) In the invention according to claim 1, normally, by performing the same supply / exhaust volume operation by the heat exchange ventilation device, the room (Z) is ventilated with a small pressure fluctuation, and the odor generating part (KT, T) is used. Only when an odor is generated, the odor generation signal of the odor generation detection unit (6) is input to the controller (7), and the output from the controller (7) is used to output each fan from the same supply / exhaust amount operation. (2) Switch to supercharging operation in which the amount of air supplied from the indoor air supply port (11) is adjusted to be greater than the amount of air discharged from the outdoor air exhaust port (14) by adjusting the air flow rates of (3). As the atmospheric pressure in the room (Z) rises to a pressurized state, the pressurized state causes the odor generated in the odor generating section (KT, T) to flow into the room (Z) and diffuse. Not only can it be prevented from falling, but due to the high and low differential pressure, the odor generating part (KT, T The air flows to the odor discharge unit (FA) and the odor is quickly discharged to the outside. The odor discharge effect in the odor discharge unit (FA) is improved, and the heat in the heat exchange ventilation operation is improved. The reduction in collection efficiency is minimized, the air conditioning loss on the indoor side is minimized, and the room (Z) can always be kept in a comfortable state.

Further, in the invention according to claim 2, at least one of the fans (2) and (3) is a variable capacity fan, and the air supply amount from the indoor air supply port (11) and the outdoor air exhaust port are Since the displacement from (14) can be adjusted,
Since the supercharging operation can be performed without stopping both fans (2) and (3), and the necessary air discharge amount for discharging dirty air in the room (Z) can be secured, the odor generating unit (K
While preventing the inflow of odor from (T, T), the room (Z)
Ventilation can be continued and the room (Z) can be made more comfortable.

In the invention according to claim 3, the odor discharge part (F
A) is composed of a ventilation fan, and the odor generation detection unit (6) is an operation switch of the ventilation fan, and the ON signal given by the ON operation to the operation switch is an odor generation signal. Since the supercharging operation of the heat exchange ventilation device can be performed in conjunction with the operation, when the odor is discharged by the ventilation fan (FA), the air flow from the room (Z) to the odor generator (KT, T) is also generated at the same time. Made me
The exhaust effect from the ventilation fan (FA) can be further improved.

(Example) The heat exchange ventilator shown in FIGS. 2 and 3 is a facility shown in FIG. 4, that is, a room (Z) requiring ventilation, such as an office zone, and the room (Z) and a compartment. And a kitchen (K) that is formed by
T) and toilets (T) and other odor generating parts (KT, T) are provided, and the odor generating parts (KT, T) are provided with odor discharging parts (FA) such as ventilation fans that discharge odors outdoors. It is a heat exchange ventilation device for ventilating the room (Z) in a facility.

That is, in the heat exchange ventilator, the main casing (1) is provided with indoor and outdoor air supply ports (11) and (12) for supplying outdoor air to the room (Z), and the room (Z). ) Is formed to form the indoor and outdoor exhaust ports (13) (14) for exhausting the air to the outside, and the casing (1) is formed.
Inside the room, an indoor air supply fan (2) including a fan body (a) and a motor (b) is provided near the indoor air supply port (11), and the outdoor air exhaust port (14) is provided. Similarly, an outdoor exhaust fan (3) composed of a fan body (a) and a motor (b) is provided nearby, and a heat exchanger (4) is provided inside the center of the casing (1). With this heat exchanger (4), the outdoor air passing through the air supply passage (15) between the air supply ports (11) and (12) and the exhaust passage between the air exhaust ports (13) and (14) ( 16) so as to exchange heat with the indoor air passing through, while the heat exchanger (4) is bypassed to the side of the heat exchanger (4) inside the casing (1). Forming a bypass passage (17)
A switching damper (5) for switching between the bypass passage (17) and the exhaust passage (16) is provided.

Then, as shown by the solid line in FIG. 2, the switching damper (5) is switched to close the pie bus passage (17), so that the outdoor air passing through the air supply passage (15) is removed. As indicated by the solid line arrow in the figure, the heat exchanger (4) is passed to supply air from the air supply fan (2) to the indoor side, and indoor air passing through the exhaust passage (16) is also supplied. ,
As indicated by a dotted arrow in the figure, when passing through the heat exchanger (4) and exhausting from the exhaust fan (3) to the outside of the room and passing through the heat exchanger (4), The outdoor air taken in and the indoor air exhausted to the outside are ventilated while exchanging heat with each other, so-called heat exchange ventilation is performed, while, as shown by the phantom line in the figure,
By switching the damper (5) and opening the bypass passage (17), the outdoor air is directly supplied into the room without exchanging heat with the room air in the heat exchanger (4). So-called normal ventilation is performed by exhausting air as it is to the outside of the room for ventilation, and energy saving and comfort are obtained by selectively performing such normal ventilation and heat exchange ventilation.

In the above heat exchange ventilator, at least one of the indoor air supply fan (2) and the outdoor air exhaust fan (3) is a variable capacity fan, and air is supplied from the indoor air supply port (11). And the amount of exhaust air from the outdoor exhaust port (14) can be adjusted, and each fan (2) can be adjusted.
A controller that enables supercharging operation in which the amount of air supplied from the indoor air supply port (11) is adjusted to be larger than the amount of air discharged from the outdoor air exhaust port (14) by adjusting the air flow rate of (3) 7) and the odor generation unit (KT, T) is provided with an odor generation detection unit (6) for detecting the odor generation, and the odor generation signal of the odor generation detection unit (6) is provided. By inputting to the controller (7), the same supply / exhaust amount operation is switched to the supercharged operation.

Specifically, for example, a variable speed motor (b) is used on the air supply fan (2) side to make the air supply fan (2) side a variable displacement type, and the odor generating unit. (K
The variable speed motor (b) on the side of the air supply fan (2) is rotated at high speed due to the generation of odor at (T, T), and the amount of air supply from the indoor side air supply port (11) to the indoor side, The supercharging operation is performed with a larger amount of exhaust air to the outside due to the rotation of the exhaust fan (3).

Then, the controller (7) outputs a switch to the supercharging operation to the variable speed motor (b) of the air supply fan (2) in response to the input of the odor generation signal from the odor generation detection unit (6). I am trying to do it.

FIG. 1 shows the above heat exchange ventilator equipped with an air conditioner (8).
It shows an automatic operation control device when used in combination with the operation body (81) side of the air conditioner (8), the operation / stop signal and cooling, heating operation signal and set temperature signal and air volume setting signal, etc. A switch (82) for inputting, a control circuit (83) and a transmission circuit (84) are provided, and a transmission signal from the transmission circuit (84) is provided to the indoor unit (85) side of the air conditioner (8). And a control circuit (87) and a transmission circuit (88).

Further, on the ventilation device side, a transmission circuit (91) connected to the transmission circuit (88) on the indoor unit (85) side via a monitor line (89), the controller (7), and a relay drive circuit. (92) and a plurality of relays (93), a damper motor (51) for switching the switching damper (5) to the output side of the relay (93), and a variable speed motor for the air supply fan (2). (B) and the motor (b) of the exhaust fan (3) are connected to each other.

Then, on the input side of the controller (7), the odor generation detection unit (6), an indoor temperature detector (10a) for detecting an indoor temperature, and an outdoor air temperature detector (1) for detecting an outdoor air temperature.
0b), and when the odor generation signal is output from the odor generation detection unit (6), the controller (7) causes the variable speed motor (b) on the air supply fan (2) side to be connected.
Is rotated at a high speed with respect to the exhaust fan (3) side to perform supercharge operation, and when no odor generation signal is output from the detection unit (6), the supply and exhaust fan (2)
Rotate (3) at the same rotation speed to perform equal air volume operation,
It prevents the atmospheric pressure from fluctuating inside the room.

Furthermore, the output from the controller (7) based on the temperature detected by the temperature detectors (10a) (10b) and the operation information on the air conditioner (8) side monitored by the monitor line (89). By automatically controlling the switching of the switching damper (5), the heat exchange ventilation operation and the normal ventilation operation described above are selectively performed.

Further, FIG. 4 shows an office zone (Z) which is a room requiring ventilation and an odor generating part such as a kitchen (K) and a toilet (T), and the office zone (Z) is shown. In addition, the above heat exchange ventilation device (S) and the air conditioner (8) are arranged, and the odor generating parts of the kitchen (KT), the toilet (T), etc. are respectively provided with operation switches serving as odor discharging parts. A ventilation fan (FA) is provided so that the ventilation fan (FA) forcibly discharges the odor generated in the toilet (T) or the like to the outside of the room.

Then, the operation switch of the ventilation fan (FA) described above is used as the odor generation detection unit (6), and the detection unit (6) is used.
To the controller (7) to connect the toilet (T)
When the operation switch of the ventilation fan (FA) is turned on by generating an odor due to an odor or the like, an on signal given by this on operation is input to the controller (7) as an odor generation signal, and the controller (7) The variable speed motor (b) on the side of the air supply fan (2) is rotated at a high speed by the output from the supercharger operation.

In this case, the heat recovery rate in the heat exchange ventilation operation is somewhat sacrificed, but the air pressure on the side of the office zone (Z) is transferred to the odor generating part (KT, T) such as the toilet (T) due to the supercharging operation. On the other hand, the odor generated in the odor generating part (KT, T) is prevented from spreading to the office zone (Z) side as well as the odor generating part (KT, T). The atmospheric pressure becomes lower than that of the office zone (Z) side, and the air flows from the office zone (Z) to the odor generating part (KT, T), and the odor is quickly discharged from the ventilation fan (FA) which is the odor discharging part. Is discharged to the outside, the odor discharging effect of the ventilation fan (FA) is improved, and when the switch is not operating, the supply / exhaust fans (2) (3)
Since each motor (b) of (1) is rotated in the same amount to perform equal air volume operation, heat exchange ventilation can be performed without lowering heat recovery efficiency, so that the office zone (Z) is kept in a comfortable state. Can be done.

As described above, by using the operation switch of the ventilation fan (FA) provided in the toilet (T) or the like, the supercharging operation is performed only when the odor is generated, in conjunction with the on / off operation of the switch, normally, etc. By performing air volume operation and ventilating with little pressure fluctuation, the odor generated in the odor generating section (KT, T) flows into the room (Z) in the pressurized state of the room (Z) due to the supercharging operation. Not only can it be prevented from diffusing, but due to the high and low differential pressure, the flow of air from the room (Z) to the odor generating parts (KT, T), and the odor discharging part (FA).
The odor is quickly discharged from the outside, the odor discharging effect at the odor discharging unit (FA) is improved, the reduction of heat recovery efficiency in heat exchange ventilation operation is minimized, and the air conditioning loss inside the room is reduced. At a minimum, the room (Z) can be kept comfortable.

In the above embodiment, the air supply fan (2) side is a variable displacement fan, but in the present invention, the exhaust fan (3) side is provided with a variable speed motor (b). The 3) side may be a variable capacity type, or both the supply and exhaust fans (2) and (3) may be variable capacity type fans.

At least one of the fans (2) and (3) is a variable capacity fan, and the amount of air supplied from the indoor air supply port (11) and the amount of air exhausted from the outdoor air exhaust port (14). By adjusting the fan, both fans (2)
Since the supercharging operation can be performed without stopping (3) and the necessary air discharge amount for discharging the dirty air in the room (Z) can be secured, the odor from the odor generating section (KT, T) can be secured. While the inflow of the air can be prevented, the room (Z) can be continuously ventilated, and the room (Z) can be made more comfortable.

(Effect of the Invention) As described above, according to the invention of claim 1,
Normally, the heat exchange ventilator performs the same supply / exhaust volume operation to ventilate the room (Z) with less fluctuation in atmospheric pressure, and
Only when an odor is generated in T), the same supply / exhaust amount operation is switched to the supercharging operation to increase the pressure in the room (Z) to a pressurized state, and the odor is generated by this pressurized state. Not only can the odor generated in the room (KT, T) be prevented from flowing into the room (Z) and diffused, but the odor generation part (KT, T) from the room (Z) due to the high and low differential pressure. The air flow to the odor discharge unit (FA) allows the odor to be quickly discharged to the outside, so the odor discharge effect in the odor discharge unit (FA) can be improved, and the heat in the heat exchange ventilation operation can be improved. The reduction in collection efficiency is minimized, the air conditioning loss on the indoor side is minimized, and the room (Z) can always be kept in a comfortable state.

Further, according to the invention of claim 2, at least one of the fans (2) and (3) is a variable capacity fan, and the amount of air supplied from the indoor air supply port (11) and the outdoor side. Since the amount of exhaust from the exhaust port (14) can be adjusted,
Since the supercharging operation can be performed without stopping both fans (2) and (3), and the necessary air discharge amount for discharging dirty air in the room (Z) can be secured, the odor generating unit (K
While preventing the inflow of odor from (T, T), the room (Z)
Ventilation can be continued and the room (Z) can be made more comfortable.

Further, according to the invention of claim 3, the odor discharge part (FA) is constituted by a ventilation fan, and the odor generation detection part (6) is provided as an operation switch of the ventilation fan by turning on the operation switch. Since the ON signal is used as the odor generation signal, it is possible to perform supercharge operation of the heat exchange ventilation device in conjunction with the odor discharge operation by the ventilation fan (FA), so when the odor is discharged by the ventilation fan (FA) from the room (Z) The flow of air flowing into the odor generator (KT, T) is also generated at the same time,
The exhaust effect from the ventilation fan (FA) can be further improved.

[Brief description of drawings]

FIG. 1 is an automatic control circuit diagram of a heat exchange ventilator according to the present invention, FIG. 2 is a plan sectional view of the ventilator, FIG. 3 is a side sectional view thereof, and FIG. 4 is a use state of the ventilator. FIG. 5 is a sectional view showing the arrangement of an office to be described, and FIG. (Z) …… Indoor (KT, T) …… Odor generation part (FA) …… Odor discharge part (11) …… Indoor air supply port (12) …… Outdoor air supply port (13) …… Room Inside exhaust port (14) …… Outdoor exhaust port (2) …… Indoor air supply fan (3) …… Outdoor exhaust fan (b) …… Motor (6) …… Odor generation detector (7)… …controller

Claims (3)

(57) [Claims] 1. A room (Z) requiring ventilation and the room (Z)
The room (Z) and the odor generating section (KT, T) in which air is allowed to flow are provided, and the odor is discharged to the outside. Odor discharge part (F
A heat exchange ventilator for ventilating the room (Z) in a facility provided with (A), the indoor and outdoor air supply ports (11) (12) for supplying outdoor air to the room (Z). ) And the indoor and outdoor exhaust ports (13) (1) for exhausting the air in the room (Z) to the outside.
4), the indoor air supply fan (2), the outdoor air exhaust fan (3), and the air volumes of the fans (2) and (3) are adjusted to supply air from the indoor air supply port (11). A controller () that enables a supercharging operation in which the amount of air is greater than the amount of air discharged from the outdoor side exhaust port (14) is provided, and odor generation is detected in the odor generation unit (KT, T). An odor generation detection unit (6) is provided, and an odor generation signal of this odor generation detection unit (6) is input to the controller (7),
A heat exchange ventilator characterized by switching from the same supply / exhaust amount operation to supercharged operation. 2. The indoor intake port (11), wherein at least one of the fans (2) (3) is a variable capacity fan.
The heat exchange ventilator according to claim 1, wherein the amount of air supplied from the outdoor side exhaust port (14) can be adjusted. 3. The odor discharge unit (FA) is composed of a ventilation fan, and the odor generation detection unit (6) is an operation switch of the ventilation fan, and an ON signal given by an ON operation to the operation switch is an odor generation signal. The heat exchange ventilation device according to claim 1 or 2.