JPS6123230Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a damper unit for an air conditioner.

Conventional damper units of this type are used for return air, exhaust,
Each damper for outside air intake was installed in the middle of the duct or built into the air conditioning casing. As a result, the ductwork becomes complicated,
If the damper unit becomes larger or
Since the two dampers are operated separately, controllability is difficult and the price is high. Furthermore, when air conditioning is performed by taking in only outside air, there are drawbacks such as large changes in air volume and difficult control compared to when using a mixture of outside air and return air.

The object of the present invention is to eliminate the above-mentioned drawbacks and provide a damper unit that is easy to operate, easy to control air volume, compact and simple in structure.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIGS. 1 to 4, a casing 1 has a rectangular parallelepiped shape, and has one side wall 11.
A return air port 1a provided in the upper left half of the wall (hereinafter referred to as the front wall), an outside air port 1b provided in the lower right half, and an air supply port 1c opened over the entire area of the other side (hereinafter referred to as the rear side) and the upper wall 12 (hereinafter referred to as the upper wall)
An exhaust port 1d is opened at the front left portion of the exhaust port 1d. Therefore, the casing 1 has an air supply port 1c.
A filter room, a heat exchanger room, and a blower room (not shown) are connected in series in this order via the filter room.

Inside the casing 1, the return air port 1 is inserted through a first partition plate 2 that divides the casing into two in the left-right direction.
A return air chamber A communicating with the outside air chamber A and an outside air chamber B communicating with the outside air port 1b are arranged in parallel. The air supply port 1 is connected to these two chambers through the second partition plate 3.
Air supply chambers C communicating with C are connected in series. The second partition plate 3 has a first opening 3 communicating with the outside air chamber B.
1, a second opening 32, and a third opening 33 communicating with the return air chamber A. These three openings form a fan shape with a central angle of 90° and are arranged offset from each other by 90° with respect to the center of the virtual circle.

Further, an exhaust chamber D is connected to the third opening 33 and the exhaust port 1d and is partitioned by a third partition plate 4 into the air supply chamber C, and is connected to the return air chamber through the second partition plate 3. Connected in series to A.

A rotary disk damper 5 (FIG. 4) for opening and closing the first, second, and third openings 31, 32, and 33 is provided on the return air chamber A and outside air chamber B sides of the second partition plate 3. The damper 5 has a first opening 51 and a second opening 5.
2 are provided on the same imaginary circle and are offset by 180° from each other. The damper 5 is connected to the opening 31 of the second partition plate 3.
- 33 is rotatably supported via an axis at the center of the virtual circle in which it is arranged, and a slight gap is left with respect to the second partition plate 3 to allow rotation. The first partition plate 2 is provided with a notch 2a through which the damper 5 passes.

In the above, the operating mode will be explained.

Now, as shown in Figure 5, when the damper 5 is rotated so that its first opening 51 and second opening 52 are aligned with the first opening 31 and third opening 33 of the second partition plate 3, respectively, the return air opening 1a Return air RA introduced from the second opening 52 of the damper 5 and the third opening of the second partition plate 3 as shown by the arrow.
The air enters the exhaust chamber D through the opening 33 and is exhausted from the exhaust port 1d. The outside air OA introduced from the outside air port 1b passes through the first opening 51 of the damper 5 and the first opening 31 of the second partition plate 3 as shown by the arrow, and enters the air supply chamber C as conditioned air. It is sent to the adjustment room (not shown). Therefore, in this case, the air conditioner will be operated entirely on outside air.

In case of full return air operation (not shown), damper 5
This is done by aligning one of the openings (for example, the first opening 51) with the second opening 32 of the second partition plate 3. The outside air that has entered the outside air chamber B through the outside air port 1b is prevented from further advancing.

In the case of normal operation in which both outside air and return air are supplied (as shown in the second figure), one of the openings of the damper 5 is in a position spanning both the second opening 32 and the third opening 33 of the second partition plate 3. By setting, a part of the return air is exhausted, and the other part is mixed and sent into the air supply chamber C with the outside air entering from the outside air port 1b. Damper 5
The mixing ratio of return air and outside air can be adjusted by rotating the damper to bring it closer to the damper position in the case of all outside air operation or all return air operation.

Note that the return air port 1a and the outside air port 1b are connected to the upper wall 12.
or the side wall 13, and the exhaust port 1d
may be provided on the side wall 13.

As described above, the present invention requires only one rotary disk as a damper, is easy to operate, is compact and has a simple structure, and is easy to control air volume.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an embodiment of the present invention, Fig. 2 is a front view, Fig. 3 is a left side view, Fig. 4 is a perspective view of the damper, and Fig. 5 is an explanatory diagram of the operating state. be. 1...Casing, 1a...Return air port, 1b...
Outside air port, 1c...Air supply port, 1d...Exhaust port, 2...
...First partition plate, 3...Second partition plate, 4...Third partition plate, 5...Damper, A...Return air chamber, B...Outside air chamber, C...Air supply chamber, D... exhaust chamber.

Claims (1)

[Scope of utility model registration request] In a casing having a return air port, an outside air port, an air supply port, and an exhaust port, a return air chamber that communicates with the return air port via a first partition plate and an outside air chamber that communicates with the outside air port are arranged in parallel. , an air supply chamber communicating with the air supply port via a second partition plate is connected in series to both chambers, and the second partition plate has a first opening communicating with the outside air chamber and a return air chamber. second and third openings that communicate with each other are provided, and these three openings are arranged offset from each other by 90 degrees with respect to the center of the virtual circle, and the second opening or the third opening and the exhaust port An exhaust chamber is connected in series with the air supply chamber through the second partition plate, and the second partition plate includes the first, second, and third chambers.
A rotary plate damper whose rotation axis is the center of the virtual circle of these three openings is provided to open and close the openings,
The damper has two openings facing each other relative to the rotation axis.
An air conditioner damper unit characterized by being installed with a 180° deviation.