JP3787406B2 - Air conditioning damper device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a damper device that adjusts the air volume ratio of a plurality of types of air conditioning air.
[0002]
[Prior art]
This type of air-conditioning damper device is used to supply mixed air having a temperature corresponding to the heat load of the air-conditioned space, and has conventionally been configured as shown in FIG.
[0003]
As shown in the plan view of FIG. 6 (a) and the elevation view of FIG. 6 (b), the conventional damper device includes, for example, four sets of dampers D and E arranged in parallel, and the mixed air is supplied to a plurality of zones. Supply is possible. That is, the inside of the casing F is partitioned by three horizontal plates 55 and four vertical plates 56, and four sets of the right damper chamber 51 and the left damper chamber 52 arranged in parallel in the horizontal direction are formed. Cold air is supplied to the right damper chamber 51, and hot air is supplied to the left damper chamber 52.
[0004]
A damper shaft 58 is rotatably passed through the left and right damper chambers 51 and 52, and the damper shaft 58 is operated to a desired rotational position by an actuator (not shown). Rectangular damper blades 61 and 62 are inserted into the damper chambers 51 and 52, and the damper blades 61 and 62 are fixed to the damper shaft 58.
[0005]
[Problems to be solved by the invention]
In the above conventional apparatus, as shown in the operation explanatory diagram of FIG. 6C, the opening degree of each of the damper blades 61 and 62 is changed by rotating the damper shaft 58 in the range of 0 to 90 degrees. Thus, mixed air at a desired temperature can be obtained by adjusting the air volume ratio of the two types of air, cold air and hot air.
However, simply mixing two types of air as described above has a limit in improving the comfort of the air-conditioned space to which the mixed air is supplied, and in this respect, there has been a demand for an improvement in the damper device. .
The objective of this invention is providing the damper apparatus which can improve the comfort of an air-conditioning space.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, for example, as shown in FIGS. 1 to 4 or 5, a damper device is configured as follows.
[0007]
A damper shaft 8 is rotatably passed through the first damper chamber 1, the second damper chamber 2, and the third damper chamber 3 arranged in parallel in the casing S, and inserted into the damper chambers 1, 2, and 3, respectively. The closed surfaces 11a, 12a, and 13a of the first damper blade 11, the second damper blade 12, and the third damper blade 13 are formed in a semicircular shape, and the three damper blades 11, 12, and 13 are connected to the damper shaft. In the first rotation region M that is mounted at a predetermined rotational position 8 and the damper shaft 8 is rotated approximately ¼, the opening degree of the second damper blade 12 is increased as the rotational angle θ increases. On the other hand, the opening degree of the third damper blade 13 is reduced, the first damper blade 11 is held fully closed, and the damper shaft 8 is almost 1/0 from the first rotation region M. In the second rotation region N, which is further rotated by 4 rotations As the rotation angle θ increases, the opening degree of the first damper blade 11 is increased, whereas the opening degree of the second damper blade 12 is decreased, and the third damper blade 13 is fully closed. It is comprised so that it may hold | maintain.
[0008]
In the above configuration, each of the damper blades 11, 12, and 13 is formed in a semi-cylindrical shape, and the closed surfaces 11 a, 12 a, and so on are formed by the semicircular surfaces of the semi-cylindrical damper blades 11, 12, and 13. It is preferable to constitute 13a.
The air supplied to the three damper chambers 1, 2, and 3 includes the coil passing air X heat-exchanged by the heat exchange coil, the mixed air Y of the outside air and the return air, and the outside air Z. And so on.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, the structure of the damper device will be described with reference to FIGS. FIG. 2 is a plan view of the damper device. FIG. 3 is a view taken along the line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.
[0010]
This damper device includes four sets of a first damper A, a second damper B, and a third damper C arranged in parallel, and can supply mixed air for air conditioning to four zones. That is, the inside of the casing S is divided by three horizontal plates 5 and a plurality of vertical plates 6, and the first damper chamber 1, the second damper chamber 2, and the third damper chamber 3 arranged in parallel in the horizontal direction are provided. Four sets are formed.
The first damper chamber 1 is supplied with the coil passing air X heat-exchanged by a heat exchange coil (not shown). The second damper chamber 2 is supplied with a mixed air Y of return air and outside air from the air-conditioned room. Only the outside air Z is supplied to the third damper chamber 3.
[0011]
A damper shaft 8 is rotatably passed through the first damper chamber 1, the second damper chamber 2, and the third damper chamber 3, and the damper shaft 8 is rotated to a desired rotation angle by an actuator (not shown).
The first damper blade 11 is inserted into the first damper chamber 1, the second damper blade 12 is inserted into the second damper chamber 2, and the third damper blade 13 is inserted into the third damper chamber 3. The damper blades 11, 12, and 13 are each formed in a semi-cylindrical shape, and include semicircular closed surfaces 11 a, 12 a, and 13 a, diameter surfaces 11 b, 12 b, and 13 b, and end surfaces 11 c and 12 c on both sides. 13c (see FIG. 1A described later).
[0012]
Next, the structure of each of the damper chambers 1, 2, and 3 and the mounting structure of the damper blades 11, 12, and 13 to the damper shaft 8 will be described with reference to FIG. FIG. 1A is a schematic view showing the open / closed state of the dampers A, B, and C that change depending on the rotation angle θ of the damper shaft 8, and corresponds to FIG.
[0013]
A first air passage 21 is formed in the first damper chamber 1. Reference numeral 21a denotes an inlet, and reference numeral 21b denotes an outlet. A cover plate 21c is provided alongside the inlet 21a (see FIG. 4). The second vent path 22 in the second damper chamber 2 and the third vent path 23 in the third damper chamber 3 are also configured in the same manner as the first vent path 21 described above, and have an inlet 22a / 23a and an outlet 22b / 23b and cover plates 22c and 23c.
[0014]
When the rotation angle θ of the damper shaft 8 is 0 degree, the damper blades 11, 12, and 13 are attached to the next rotation position of the damper shaft 8.
The first damper blade 11 is attached to the damper shaft 8 so that the diameter surface 11b is parallel to the flow direction in a state where the first air passage 21 is fully closed.
The second damper blade 12 is attached to the damper shaft 8 so that the diameter surface 12b is orthogonal to the flow direction in a state where the second ventilation path 22 is fully closed.
On the other hand, the third damper blade 13 is attached to the damper shaft 8 so that the diameter surface 13b is parallel to the flow direction in a state where the third air passage 23 is fully opened.
[0015]
The operation of the damper device will be described with reference to FIG. FIG. 1B is a graph showing the relationship between the rotation angle θ of the damper shaft 8 and the opening degree of the damper blades 11, 12, 13.
[0016]
When the rotation angle θ of the damper shaft 8 is increased from 0 degrees to 90 degrees in the first rotation region M, the second damper blade 12 is operated from fully closed to fully opened, whereas the third damper is The blade 13 is operated from fully open to fully closed, and the first damper blade 11 is held fully closed. On the contrary, when the rotation angle θ is decreased from 90 degrees to 0 degrees in the first rotation region M, the second damper blade 12 is operated from fully open to fully closed. The third damper blade 13 is operated from fully closed to fully open, and the first damper blade 11 is held fully closed.
[0017]
When the rotation angle θ of the damper shaft 8 is increased from 90 degrees to 180 degrees in the second rotation region N, the first damper blade 11 is operated from fully closed to fully opened, whereas the second damper blade is operated. 12 is operated from fully open to fully closed, and the third damper blade 13 is held fully closed. On the contrary, when the rotation angle θ is decreased from 180 degrees to 90 degrees in the second rotation region N, the first damper blade 11 is operated from fully open to fully closed. The second damper blade 12 is operated from fully closed to fully open, and the third damper blade 13 is held fully closed.
[0018]
FIG. 5 shows a modification and is a partial view corresponding to FIG. In this modification, the second dampers B and C are configured in the same manner as in the above-described embodiment, but the first damper A is changed as follows.
The cover plate 21 c is arranged side by side with the outlet 21 b of the first air passage 21 in the first damper chamber 1. When the rotation angle θ of the damper shaft 8 is 0 degree, the first damper blade 11 has the diameter surface 11b parallel to the flow direction in a state where the first air passage 21 is fully closed. To the damper shaft 8.
The opening degree of the first damper blade 11 of the first damper A of this modified embodiment also changes as the damper shaft 8 rotates as in the case of FIG.
[0019]
The above-described embodiments and modifications can be changed as follows.
Each of the damper blades 11, 12, and 13 only needs to form the respective closed surfaces 11 a, 12 a, and 13 a in a semicircular shape, and omit each of the diameter surfaces 11 b, 12 b, and 13 b from the above-described closed surfaces. It is also possible to support the surfaces 11a, 12a, and 13a on the damper shaft 8 by radial arms.
[0020]
Instead of providing four sets of three dampers A, B, and C, one to three sets may be provided, or five or more sets may be provided.
The air supplied to the damper A may be mixed air Y or outside air Z instead of the coil passing air X, and the air supplied to the dampers B and C can be similarly changed. Furthermore, as a matter of course, the air supplied to each of the dampers A, B, and C can be used with the humidity adjusted to a desired value.
[0021]
【The invention's effect】
Since the present invention is configured and operates as described above, the following effects can be obtained.
By operating the rotation angle of the damper shaft within the first rotation region, the air volume ratio of the two types of air supplied to the damper device can be adjusted, and the rotation angle of the damper shaft can be adjusted. By operating in the two-rotation region, it is possible to adjust the air volume ratio of another two types of air among the above three types of air.
For this reason, it becomes possible to finely adjust the mixing ratio of the mixed air discharged from the damper device, and as a result, the comfort of the air-conditioned space to which the mixed air is supplied can be improved.
[0022]
In addition, since the above effect can be achieved by operating the opening of the three damper blades with a single damper shaft, only one actuator is required to operate the damper shaft, and the damper device can be constructed simply and inexpensively. .
[0023]
In addition, when each said damper blade | wing is formed in a semi-cylinder shape and the said closed surface is comprised by the semi-circumferential surface of the semi-columnar damper blade | wing, the rigidity of a damper blade | wing is improved and it is simple. It can be combined with building.
[0024]
Further, when each of the air supplied to the three damper chambers is coil passing air, mixed air of outside air and return air, and outside air, outside air cooling and outside air heating can be performed. The space can be strongly ventilated to improve comfort and reduce air conditioning costs.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a damper device according to the present invention, FIG. 1 (a) is a schematic diagram showing the open / close state of the damper, and FIG. 1 (b) is a diagram illustrating a rotation angle of a damper shaft and damper blades. It is a graph which shows the relationship with an opening degree.
FIG. 2 is a plan view of the damper device.
FIG. 3 is a view taken along the line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a partial view showing a modification of the damper device and corresponding to FIG. 1 (a).
6 shows a conventional example, FIG. 6 (a) is a view corresponding to FIG. 2, FIG. 6 (b) is a view corresponding to FIG. 3, and FIG. 6 (c) is a view corresponding to FIG. It is a figure equivalent to b).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... 1st damper chamber, 2 ... 2nd damper chamber, 3 ... 3rd damper chamber, 8 ... Damper shaft, 11 ... 1st damper blade | wing, 12 ... 2nd damper blade | wing, 13 ... 3rd damper blade | wing, 11a * 12a 13a ... closed surface, M ... first rotation region, N ... second rotation region, S ... casing, X ... air passing through coil, Y ... mixed air of outside air and return air, Z ... outside air, [theta] ... damper shaft 8 Rotation angle.

Claims (3)

A damper shaft (8) is rotatably passed through the first damper chamber (1), the second damper chamber (2), and the third damper chamber (3) arranged in parallel in the casing (S), and the damper chamber described above. (1) The closed surfaces (11a), (12a) and (13a) of the first damper blade (11), the second damper blade (12) and the third damper blade (13) inserted in the (2) and (3), respectively. A semicircular shape is formed, and the three damper blades (11), (12) and (13) are attached to a predetermined rotational position of the damper shaft (8),
In the first rotation region (M) in which the damper shaft (8) is rotated approximately 1/4, the opening degree of the second damper blade (12) is increased as the rotation angle (θ) increases. In contrast, the opening of the third damper blade (13) is reduced, and the first damper blade (11) is held fully closed.
In the second rotation region (N) in which the damper shaft (8) is further rotated by approximately 1/4 rotation from the first rotation region (M), the first rotation region (N) increases as the rotation angle (θ) increases. While the opening degree of the first damper blade (11) is increased, the opening degree of the second damper blade (12) is decreased and the third damper blade (13) is held fully closed. An air-conditioning damper device, characterized in that it is configured. Each of the damper blades (11), (12) and (13) is formed in a semi-cylindrical shape, and the closed surface (by the semicircular surface of the semi-cylindrical damper blades (11), (12) and (13)). The damper device for air conditioning according to claim 1, wherein 11a), (12a) and (13a) are configured. Each of the air supplied to the three damper chambers (1), (2) and (3) is mixed air (Y) of the coil passing air (X) heat-exchanged by the heat exchange coil and the outside air and the return air (Y And the outside air (Z). 3. The air conditioning damper device according to claim 1, wherein the air conditioning damper device is an outside air (Z).

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