JP2551208B2 - Heat exchange ventilator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a ventilator having a heat exchange function.

<Prior art> Recently, in order to reduce the energy of air conditioning and to perform comfortable air conditioning, heat is exchanged between the air supplied from the outdoors to the room and the air exhausted from the room to the outdoors. Heat exchange ventilation device (for example, Japanese Utility Model Sho 64-2114)
(See Japanese Patent Publication).

The basic structure of the heat exchange ventilator is shown in FIGS. 7 and 8.

The heat exchange ventilator shown in these figures is a ceiling-embedded type.
A mounting board 91 having an inner exhaust port 91b and an inner exhaust port 91b is fixed.

A heat exchanger 92 is arranged in the center of the casing 90, and the partition wall 9a is provided on each side of the heat exchanger 92.
By partitioning the inside of the casing 90 with 9 and 9b,
An exhaust chamber 90a equipped with an exhaust fan 93 and an air supply fan 9
An air supply chamber 90b provided with 4 is formed.

An exhaust communication hole 90e that connects the heat exchanger 92 and the exhaust chamber 90a is formed in the partition wall 9a, and an air supply communication hole 90f that connects the air supply chamber 90b and the heat exchanger 92 is formed in the partition wall 9b. Are formed. Further, the exhaust chamber 90a is formed with an outdoor exhaust port 90c to which an unillustrated exhaust duct is connected, and the air supply chamber 90b is formed with an outdoor air supply port 90d to which an unillustrated air supply duct is connected. ing.

Then, by the indoor exhaust port 91b, the heat exchanger 92, the exhaust communication hole 90e, the exhaust chamber 90a and the outdoor exhaust port 90b,
An exhaust path 95 for guiding the exhaust H from the room to the outdoors is configured, and the outdoor air supply port 90d, the air supply chamber 90c, the air supply communication hole 90f, the heat exchanger 92, and the indoor air supply port 91a are used for outdoor use. An air supply path 96 for guiding the air supply K from the inside to the room is configured.

Further, the partition wall 9a is formed with a bypass hole 90g for directly connecting the indoor exhaust port 91b and the exhaust chamber 90a. The indoor exhaust port 91b, the bypass hole 90g, and the exhaust chamber 90a.
And the outdoor exhaust port 90b, the exhaust H is transferred to the heat exchanger 92.
A bypass 97 is constructed to directly lead to the outside without passing through.

The exhaust passage 95 and the bypass passage 97 are selectively used by closing one of the exhaust communication hole 90e and the bypass hole 90g by a damper 98a slidably arranged on the surface of the partition wall 9a. It is supposed to be done.

 FIG. 8 shows a detailed structure near the damper 98a.

The exhaust communication hole 90e of the exhaust passage 95 and the bypass hole 90g of the bypass passage 97 are arranged on the diagonal line of the partition wall 9a.
A pair of guide rails 98b, 98b are fixed to the partition wall 9a in parallel with the diagonal line.
The damper 98a composed of a plate shaped almost like a tortoise shell by 8b
Is held slidably on the surface of the partition wall 9a.

The other end of a coil spring 98c whose one end is fixed to the casing 90 is fixed to the damper 98a.
Due to the spring force of the damper 98a, the damper 98a is normally arranged at a position to close the bypass hole 90g, as shown in FIG.

Further, a link mechanism 98e driven by a geared motor 98d is engaged with the damper 98a, and when the geared motor 98d is driven, the damper 98a resists the spring force of the coil spring 98c and the direction of the white arrow in the figure. The exhaust communication hole 90e is closed and the bypass hole 90g is opened.

If the power supply to the geared motor 98d is stopped, the damper 98a
Is pulled back to the position that closes the bypass hole 90g again by the pulling force of the coil spring 98c.

Reference numeral 98f is a holder having a cushion material lined therein, and prevents the damper 98a pulled back to the original position by the coil spring 98c from colliding with the casing 90 and being damaged.

In the above configuration, the damper 98a can selectively block either the exhaust communication hole 90e or the bypass hole 90g.

In the state where the bypass hole 90g is closed and the exhaust communication hole 90e is opened, the exhaust gas H from the indoor exhaust port 91b is exhausted to the outside through the heat exchanger 92, and heat exchange with the supply air K is performed. Be seen.

On the other hand, in the state where the exhaust communication hole 90e is closed and the bypass hole 90g is opened, the exhaust gas H from the indoor exhaust port 91b bypasses the heat exchanger 92 and is exhausted.
There is no heat exchange between and.

As described above, by controlling the power supply to the geared motor 98d, it is possible to switch between the heat exchange ventilation operation in which ventilation is performed while performing heat exchange and the normal ventilation operation in which ventilation is performed without heat exchange.

<Problems to be Solved by the Invention> However, in the above configuration, in order to swing the damper 98a smoothly, a gap is required between the damper 98a and the partition wall 9a, and the exhaust communication hole 90e or the bypass. Hole 9
When 0g cannot be completely sealed and the sealing characteristic is deteriorated, especially when the bypass hole 9a is not sufficiently sealed, it is discharged outdoors without passing through the heat exchanger 92 when performing heat exchange ventilation. There is a risk that the amount of air that is used will increase and that the heat exchange efficiency will decrease.

Further, in the above-mentioned configuration, since the movement distance of the damper 98a is large, the position detection of the damper 98a is performed by the geared motor 98d having a small amount of movement, but the link mechanism 98e connecting the two in order to perform a smooth operation. Since a certain amount of rattling is allowed, for example, when the damper 98a is caught by the guide rails 98b, 98b, correct position detection cannot be performed, and malfunction may occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat exchange ventilator that can reliably switch an exhaust path and a bypass path without causing deterioration of seal characteristics and malfunction. There is.

<Means for Solving the Problems> A heat exchange ventilation device of the present invention for solving the above problems includes an air supply passage for guiding air supply from the outside to a room through a heat exchanger arranged in a casing, and an indoor From the above heat exchanger,
And, an exhaust passage for guiding exhaust gas to the outside through an exhaust chamber formed on the side of the heat exchanger by partitioning the inside of the casing with a partition wall, and the partition wall,
An exhaust communication hole as a part of the exhaust passage for guiding the exhaust gas after heat exchange to the exhaust chamber and a bypass hole for guiding the exhaust gas before heat exchange to the exhaust chamber without passing through the heat exchanger are formed. In the exhaust chamber, the opening operation is performed in the direction close to the center of the end surface of the heat exchanger through the rotary shaft arranged in parallel with the short side of the end surface of the heat exchanger on the blowing side. A rotary open / close type damper that is axially supported so that it moves in the direction of separation and that presses against the partition wall to close the exhaust communication hole, and is arranged parallel to the short side on the suction side of the end surface of the heat exchanger. Rotational opening and closing, which is pivoted so that the opening operation approaches the center of the end surface of the heat exchanger and the closing operation separates through the rotating shaft, presses against the partition wall and closes the bypass hole. With a damper of the formula,
The drive motor is connected between the drive motor and both dampers, and is driven by the drive motor to open and close both dampers so that when one of the dampers is closed, the other is opened. It is characterized in that it is provided with interlocking means.

<Operation> In the heat exchange ventilator of the present invention having the above-described configuration, two sets of dampers that are interlocked and driven by the drive means are provided corresponding to the exhaust communication holes and the bypass holes, respectively. It is possible to shorten the moving distance of the damper associated with the opening / closing operation. Also, the two sets of dampers are pressed against the partition wall by rotating and opening and closing to close the exhaust communication hole and the bypass hole formed in the partition wall, so that the sealing performance is improved as compared with the sliding damper. In addition, there is no possibility of malfunction due to sliding.

<Example> Below, the heat exchange ventilation apparatus of this invention is demonstrated, referring drawings which show an example.

As shown in FIG. 5 and FIG. 6, the heat exchange ventilator A of this embodiment is a ceiling-embedded type, and is suspended in the space above the ceiling plate R by fishing fittings T, T .... A casing 1 having a substantially rectangular parallelepiped shape and having a heat exchanger 3 inside, and a casing plate 2 fixed to the lower surface of the casing 1 and exposed to the lower surface of the ceiling plate R are provided. Further, on the side surface of the casing 1, an outdoor exhaust port 1a to which an exhaust duct (not shown) is connected and an outdoor air supply port to which an air supply duct (not shown) is connected
1b is formed on the lower surface of the surface layer plate 2, and an indoor exhaust port 2a for introducing exhaust gas H from the room into the casing 1,
An indoor air supply port 2b for supplying the air supply K from the outside to the room is formed.

The heat exchanger 3 is arranged in the center of the casing 1, and on both sides of the heat exchanger 3, as shown in FIG.
By partitioning the inside of the casing 1 by the partition walls 10 and 11, an exhaust chamber 1c having an exhaust fan 4 and an air supply chamber 1d having an air supply fan 5 are formed.

The partition wall 10 is formed with an exhaust communication hole 10a for guiding the exhaust H that has been heat-exchanged by the heat exchanger 3 to the exhaust chamber 1c,
In the partition wall 11, the supply air K is supplied from the supply chamber 1d to the heat exchanger 3
Is formed with an air supply communication hole 11a. The outdoor exhaust port 1a is formed in the exhaust chamber 1c of the casing 1, and the outdoor air supply port 1b is formed in the air supply chamber 1d.

And the indoor exhaust port 2a, the heat exchanger 3, the exhaust communication hole
10a, the exhaust chamber 1c and the outdoor exhaust port 1a constitute an exhaust passage E for guiding the exhaust H from the indoor to the outdoor, and the outdoor air supply port 1b, the air supply chamber 1d, and the air supply communication hole.
11a, the heat exchanger 3 and the indoor air supply port 2b constitute an air supply passage I for guiding the air supply K from the outdoors to the room.

In addition, the partition wall 10 is provided with the exhaust gas H introduced from the indoor exhaust port 2a as indicated by a two-dot chain line in the figure.
A bypass hole 10b for directly leading to the exhaust chamber 1c is formed without passing through, and the indoor exhaust port 2a and the bypass hole 10 are formed.
b, the exhaust chamber 1c and the outdoor exhaust port 1a constitute a bypass passage B for directly guiding the exhaust H to the outside without passing through the heat exchanger 3.

The exhaust passage E and the bypass passage B are formed by the two sets of dampers 6 and 7 rotatably arranged on the surface of the partition wall 10 at positions corresponding to the exhaust communication hole 10a and the bypass hole 10b. By blocking either one of 10a and the bypass hole 10b, it is selectively used.

2 and 3 show the detailed structure in the vicinity of the dampers 6, 7.

The exhaust communication hole 10a and the bypass hole 10b are arranged on a diagonal line of the partition wall 10. The damper 6 is arranged inside the exhaust chamber 1c at the inner edge of the exhaust communication hole 10a in parallel with the short side of the end face of the heat exchanger 3 on the blowout side. , 61 are pivotally supported so that the opening operation is closer to the center of the end surface of the heat exchanger 3 and the closing operation is away therefrom. In addition, the damper 7
At the inner edge of the bypass hole 10b in the exhaust chamber 1c, via the hinges 71, 71 forming a rotating shaft arranged parallel to the short side on the suction side of the end surface of the heat exchanger 3, Again, the opening movement is closer to the center of the end surface of the heat exchanger 3,
It is rotatably supported so that the closing motion is in the direction to move away.

The dampers 6, 7 on the surface of the partition wall 10 facing the exhaust chamber 1c
A drive means 8 for interlocking and driving both dampers 6 and 7 is provided in a portion between them.

The drive means 8 is connected between the drive motor 81 and the drive motor 81 and both dampers 6 and 7, and
It is provided with a link mechanism 82 as an interlocking device that is driven by 1 to open and close both dampers 6 and 7 so that when one of the dampers 6 and 7 is closed, the other is opened. The link mechanism 82 includes a crank 82a attached to the shaft of the drive motor 81, and a pair of rods 82b, 82b whose one end is pivotally supported by the crank 82a and the other end is pivotally supported by the dampers 6, 7.
It consists of and.

For example, as shown in FIG. 3, the link mechanism 82 is driven by the drive motor 81 of the drive means 8 with the damper 6 on the exhaust communication hole 10a side opened and the damper 7 on the bypass hole 10b side closed. Then, the damper 6 is closed and
The damper 7 is opened, and from this state, the drive motor 81
When the link mechanism 82 is driven by, the damper 7 is closed, the damper 6 is opened, and the original state is restored.

Note that, around the exhaust communication hole 10a and the bypass hole 10b of the partition wall 10, sealing materials S, S that maintain the sealing property when the dampers 6, 7 are closed are attached.

As the driving means 8, as shown in FIG. 4, a closing spring 83 is provided, and by the spring force of the closing spring 83,
It is also possible to employ a device in which the damper 6 (7) is closed. In this case, in order not to obstruct the closing of the damper 6 (7) by the closing spring 83, the rod 82
It is preferable that the fulcrum shaft hole 82c at the connecting portion between the a and the damper 6 (7) is made an elongated hole so that the damper 6 (7) can move relatively freely.

As described above, in the heat exchange ventilator A of this embodiment, the drive means 8 interlocks and drives the dampers 6, 7 to selectively close either the exhaust communication hole 10a or the bypass hole 10b. be able to.

In the state where the bypass hole 10b is closed and the exhaust communication hole 10a is opened, the exhaust gas H from the indoor exhaust port 2a is exhausted to the outside through the heat exchanger 3, and heat exchange with the supply air K is performed. Be seen.

On the other hand, when the exhaust communication hole 10a is closed and the bypass hole 10b is opened, the exhaust gas H from the indoor exhaust port 2a bypasses the heat exchanger 3 and is exhausted. There is no heat exchange between them.

In this way, by driving the driving means 8,
It is possible to switch between heat exchange ventilation operation in which ventilation is performed while performing heat exchange, and normal ventilation operation in which ventilation is performed without heat exchange.

In the heat exchange ventilator A of this embodiment having the above-mentioned configuration, two sets of dampers 6 and 7 which are interlocked and driven by the drive means 8 are provided corresponding to the exhaust communication hole 10a and the bypass hole 10b, respectively. Therefore, the moving distance of each damper associated with the opening / closing operation can be made shorter than before. Further, the two sets of dampers 6 and 7 are brought into pressure contact with the partition wall 10 by rotating and opening and closing, and block the exhaust communication hole 10a and the bypass hole 10b formed in the partition wall 10, so that the damper 6 is a sliding damper. Compared with this, the sealability can be improved, and there is no risk of malfunction due to sliding.

In the above embodiment, the drive mechanism 8 has a structure in which two sets of dampers 6 and 7 are mechanically interlocked and driven by the link mechanism 82. It is also possible to employ a structure in which two sets of drive sources are provided corresponding to the dampers and both dampers are interlocked and driven by electrical interlocking of the respective drive sources.

In addition, various design changes can be made without changing the gist of the present invention.

<Effects of the Invention> The heat exchange ventilator of the present invention is configured as described above, and since two sets of open / close rotary dampers are arranged corresponding to the exhaust communication holes and the bypass holes, The movement distance of each damper associated with the opening / closing operation can be made shorter than before. Further, the two sets of dampers are pressed against the partition wall by rotating and opening / closing to close the exhaust communication hole and the bypass hole formed in the partition wall, so that the sealing performance is improved as compared with the sliding damper. While being able to
There is no risk of malfunction due to sliding. Therefore, the heat exchange ventilator of the present invention can reliably switch the exhaust passage and the bypass passage without deteriorating the seal characteristics and causing malfunction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the internal structure of an embodiment of the heat exchange ventilation device of the present invention, FIG. 2 is a vertical cross-sectional view of the above embodiment, and FIG.
FIG. 4 is an enlarged front view of an essential part of the above embodiment, FIG. 4 is an enlarged front view of an essential part of a modified example, and FIG. 5 is a front view showing a mounted state of a heat exchange ventilation device of the embodiment. FIG. 7 is a side view of the mounted state, FIG. 7 is a cross-sectional view showing the internal structure of the conventional example, and FIG. 8 is a vertical sectional view of the conventional example. 1 ... Casing, 1c ... Exhaust chamber, 3 ... Heat exchanger, 6,7 ... Damper, 8 ... Driving means, 10 ... Partition wall, 10a ... Exhaust communication hole, 10b ... Bypass hole, A: Heat exchange ventilator, E: Exhaust passage, H: Exhaust, I: Air supply passage, K: Air supply.

Claims (1)

(57) [Claims] 1. An air supply path (I) for guiding air supply (K) from the outdoors through a heat exchanger (3) arranged in a casing (1), and the heat exchanger (3) from the room, And an exhaust chamber (1c) formed on the side of the heat exchanger (3) by partitioning the inside of the casing (1) with a partition wall (10)
And an exhaust passage (E) for guiding the exhaust (H) to the outside through the partition wall (10).
The exhaust communication hole (10a) as a part of the exhaust path (E) for guiding the exhaust gas to the exhaust chamber (1c) and the exhaust chamber (3) before the heat exchange without passing through the exhaust chamber (3). (1c)
And a bypass hole (10b) for leading to
In the exhaust chamber (1c), an opening operation is performed on the end surface of the heat exchanger (3) via a rotary shaft that is arranged parallel to the short side of the end surface of the heat exchanger (3) on the blowing side. A rotary opening / closing damper (6), which is axially supported so as to approach the center and closes in the closing direction, presses against the partition wall (10) to close the exhaust communication hole (10a), and heat exchange. The opening operation is in the direction approaching the center of the end surface of the heat exchanger (3) and the closing operation is in the direction away from the end surface of the heat exchanger (3) via the rotary shaft arranged in parallel to the short side on the suction side of the end surface of the device (3). In addition to the rotary opening / closing type damper (7) which is pivotally supported in such a manner as to press against the partition wall (10) to close the bypass hole (10b), the drive motor (81) and Drive motor (8
The damper (6) is connected between the damper (6) and (7) and is driven by the drive motor (81).
Interlocking means (82) for opening and closing both dampers (6) and (7) so that when one of the (7) is closed, the other is opened.
And a heat exchange ventilator (A).