JPH0812016B2 - Air distributor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air distribution device, and more particularly to an air distribution device that distributes air blown from a central air conditioner to a plurality of air supply ducts.

[Prior art]

An example of a conventional air distributor of this type is SAIKAI Sho 63-9214.
No. 9 is disclosed. In this conventional technique, one damper is provided for all of the plurality of air outlets (blowers), the rotating shaft of the fan and the damper are connected via a speed reduction mechanism and a crank mechanism, and the rotational force (wind force) of the fan is increased. Is used to reciprocate the damper to alternately open and close each of the air outlets (blowers), thereby causing a pulsating flow in the room air.

[Problems to be Solved by the Invention]

In the prior art, since each of the plurality of air outlets (blowers) is alternately opened and closed by one damper, the number of air outlets (blowers) and its opening / closing pattern can be arbitrarily changed. No, and therefore the freedom of design was greatly limited.

Further, since the damper is driven by using the wind force, there is a problem in that the damper operates unevenly, so that a desired pulsating flow cannot be obtained stably.

Therefore, a main object of the present invention is to provide an air distribution device capable of improving the degree of freedom in design and stably obtaining a desired pulsating flow.

[Means for solving the problem]

The present invention is directed to a casing, an inlet formed on a side surface of the casing and for taking in air from a central air conditioner,
Related to a plurality of air outlets formed on the side surface of the casing and delivering air taken in from the inlet, a crankshaft arranged inside the casing, a connecting rod reciprocated by rotation of the crankshaft, and an air outlet In the air distribution device, which is provided with a damper connected to the connecting rod, the connecting rod and the damper are individually installed in association with each of the air outlets, and the crankshaft is rotated by a motor so that The air distributor is characterized in that each of the dampers has a predetermined phase difference and is opened and closed individually.

[Action]

Since the connecting rod and the damper are individually installed in relation to each of the plurality of air outlets to open and close each of the air outlets individually, the number of air outlets can be arbitrarily changed, and the crank arm can be installed. The opening / closing pattern of each blower port can be arbitrarily changed by changing the mutual angle, the length of the connecting rod, and the like. Further, since the crankshaft is rotated by the motor, the opening / closing operation of the damper is not uneven.

〔The invention's effect〕

According to the present invention, the degree of freedom in design can be improved and a desired pulsating flow can be stably obtained.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

〔Example〕

Referring to FIGS. 1A and 1B and FIG. 2, the air distributor 10 of this embodiment includes a rectangular casing 12.
On the right side surface of the casing 12, a central air conditioner 58 described later is provided.
An inlet 14 is formed for taking in conditioned air from (Fig. 3). Further, blower ports 16 to 22 for sending the air taken in from the inflow port 14 into a room 56 (FIG. 3) to be air-conditioned, which will be described later, are formed on the back side surface and the front side surface of the casing 12. That is, the first blower port 16 is formed on the right side of the back side, the second blower port 18 is formed on the right side of the front side face, the third blower port 20 is formed on the left side of the back side face, and the fourth blower port 22 is formed on the left side of the front side face. It Inflow port 14 and each ventilation port 16-22
Are formed in a substantially cylindrical shape by slightly projecting from the side surface of the casing 12 for connecting the ducts.

Then, inside the casing 12, dampers 24 to 30 corresponding to the air blowing ports 16 to 22 for adjusting the amount of air blown are installed by a hinge 32 so as to be openable and closable. That is, the first damper 24 is provided in the first blower opening 16, and the second blower opening is provided.
The second damper 26 is provided at 18 and the third damper 28 is provided at the third blower port 20.
However, the fourth damper 30 is provided in each of the fourth blower ports 22.

Further, a crankshaft 34 is arranged at the center of the inside of the casing 12 so as to extend in the left-right direction in FIG. 1A. Crankshaft
34 has two crank parts 36 and 38, and the left crank part 38 is arranged at a position displaced from the right crank part 36 by 90 ° in the rotation direction of the crankshaft 34 indicated by arrow A. . That is, the crank arm 40 of the crank portion 36 and the crank arm 42 of the crank portion 38 are arranged at right angles to each other. One end of the crankshaft 34 is supported by the bearing 44, and the other end is connected to the motor 46 arranged on the left outer surface of the casing 12.

The first damper 24 and the second damper 26 are connecting rods, respectively.
48 and 50 are connected to the crank portion 36, and the third damper 28 and the fourth damper 30 are connected to the connecting rods 52 and 54, respectively.
Is connected to the crank portion 38 by.

As shown in FIG. 3, such an air distribution device 10 has
For example, it is installed in the ceiling or the like of the room 56 to be air-conditioned. Then, a duct (not shown) that guides the conditioned air from the central air conditioner 58 is connected to the inflow port 14
An air supply duct 60 that guides conditioned air to a room 56 to be conditioned is connected to each of 16 to 22.

Then, when the crankshaft 34 is rotated by the motor 46, the first damper 24 is periodically opened and closed as shown in FIG. That is, when the crank portion 36 rotates in the direction of the arrow from the initial position a due to the rotation of the crank shaft 34, the first damper 24 is pushed by the connecting rod 48 and gradually closed. Then, when the crank portion 36 moves from the initial position a to the position b rotated 90 °, the first position
The damper 24 is completely closed. Further rotation, the first
The damper 24 is pulled by the connecting rod 48, and is fully opened at the position of c rotated 180 ° from the position of b. And
When it is further rotated, the first damper 24 is again pushed by the connecting rod 48 and gradually closed.

The second damper 26 is different from the first damper 24 in the crankshaft.
Since they are arranged at the opposite positions across the 34, they are opened and closed in a phase delayed by 180 ° from the first damper 24.

The third damper 28 is opened / closed in a phase advanced by 90 ° from the first damper 24 because the crank portion 38 is arranged at a position displaced by 90 ° in the rotational direction with respect to the crank portion 36.

The fourth damper 30 is different from the third damper 28 in the crankshaft.
Since they are arranged at the opposite positions across the 34, they are opened and closed in a phase delayed by 180 ° from the third damper 28.

Therefore, the four dampers 24 to 30 are the first damper 24,
The fourth damper 30, the second damper 26, and the third damper 28 may be opened and closed in this order and with a phase difference of 90 ° from each other.

Then, the air blown from the central air conditioner 58 and taken into the inside of the casing 12 through the inflow port 14 is used for each damper.
The air is distributed to the air supply ducts 60 through the air outlets 16 to 22 in accordance with the opening degree of 24 to 30, and is blown from the air outlets 62 to the rooms 56 to be air-conditioned.

When the total air volume taken into the casing 12 from the inlet 14 is 100, the vertical axis is the air volume blown from each of the air outlets 16 to 22, and the rotation angle (the first rotation angle) of rotating the crankshaft 34 in the direction of arrow A 1A and 1B is assumed to be 0 °), the horizontal axis represents the change in the amount of air blown from each of the air outlets 16 to 22 by 90 °, as shown in FIG. It can be represented by the same waveform with a phase shift.

According to this embodiment, the amount of air blown from each of the air blow ports 16 to 22 can be sequentially changed to generate a pulsating flow in the indoor air, so that the indoor air can be prevented from staying and the entire room can be air-conditioned uniformly. can do.

Further, since the blowers 16 to 22 are individually opened and closed by the dampers 24 to 30, the number of the blowers can be arbitrarily increased or decreased, and moreover, the angle formed between the crank arms 40 and 42 and By changing the length of the connecting rods 48 to 54, the opening / closing pattern of the blower ports 16 to 22 can be arbitrarily changed.

Furthermore, since the crankshaft 34 is rotated by the motor 46, it is possible to prevent unevenness in the opening / closing operation of the dampers 24 to 30, and thus to obtain a desired pulsating flow in a stable manner.

As shown by the chain double-dashed line in FIG. 3, a VAV (variable air volume) unit 64 is arranged in the ceiling or the like of the room 56 to be air-conditioned, and air is sent from the central air conditioner 58 to the air distribution device 10. The amount of air flow may be adjusted as necessary.
In this case, the VAV temperature sensor 66 is installed inside the room 56.

Then, if the number of rotations of the motor 46 is changed with time, the air flow rate can be changed more complicatedly.

Also, by shortening the length of each connecting rod 48-54, each damper
It is possible to always obtain a certain amount or more of air from each of the air outlets 16 to 22 without completely closing the 24 to 30.

In the air distributor 10 'of another embodiment shown in FIG. 6, each connecting rod 68 is formed longer than that of the previous embodiment. And
The connecting rod 68 is passed through a hole 72 formed in the damper 70, and a stopper 76 is attached to a small end portion 74 of the connecting rod 68. Also, the air outlet
A spring 80 for closing the damper 70 is installed above the 78.

In this embodiment, by adjusting the position of the stopper 76 and adjusting the length of the connecting rod 68, it is possible to finely adjust the change in the amount of air blown from each air outlet.

Then, for example, as shown in FIG. 6, when the length of the connecting rod 68 is adjusted longer than that in the previous embodiment, the connecting rod 68 is
However, since it slides in the hole 72 of the damper 70 for a certain period of time, the fully closed state can be maintained for a certain period of time. When the connecting rod 68 is adjusted to be longer than that in the previous embodiment, the change in the amount of air blown from each air outlet becomes as shown in FIG. 7, for example.

[Brief description of drawings]

1A and 1B are schematic views showing an embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is a sectional view taken along line IB-IB in FIG. 1A with the crankshaft omitted. FIG. 2 is a perspective view showing the internal structure of the embodiment shown in FIGS. 1A and 1B. FIG. 3 is a perspective view showing a state in which the air distributor of this embodiment is installed. FIG. 4 is an illustrative view showing the opened / closed state of the damper. FIG. 5 is an illustrative view showing a change in the amount of air blown from each air blowing port. FIG. 6 is an illustrative view showing another embodiment. FIG. 7 is an illustrative view showing changes in the amount of air blown from the air blow ports of the embodiment of FIG. FIG. 8 is an illustrative view showing a conventional technique. In the figure, 10 and 10 'are air distribution devices, 12 is a casing, 14 is an inlet, 16 is a first air outlet, 18 is a second air outlet, 20
Is a third air outlet, 22 is a fourth air outlet, 24 is a first damper, 26 is a second damper, 28 is a third damper, 30 is a fourth damper, 34 is a crankshaft, 36 and 38 are crank portions, 40 , 42 are crank arms, 44 is a bearing, 46 is a motor, and 48 to 54 are connecting rods.

Claims (1)

[Claims] 1. A casing, an inlet port formed on a side surface of the casing for taking in air from a central air conditioner, and a plurality of air outlet ports formed on the side surface of the casing for taking in air taken in from the inlet port. A blower port, a crankshaft arranged inside the casing, a connecting rod reciprocated by rotation of the crankshaft, and a damper provided in connection with the blower port and connected to the connecting rod. In the air distribution device, the connecting rod and the damper are individually installed in association with each of the blower ports, and each of the blower ports is set to a predetermined position by rotating the crankshaft by a motor. An air distribution device characterized by being opened and closed individually with a phase difference.