JPH0464854A - Blower device for air conditioner - Google Patents

Abstract

PURPOSE:To perform a smooth air blowing and provide a low-noise sound type to prevent any air breathing sound by a method wherein a blower is provided with an orifice having an opening in correspondence with a blowing port within a main body and a spherical damper for opening or closing the opening part, and further with bolts held by threaded parts in a base and the bolt is provided with a specific threaded part threadably connected to an adjusting bolt fixed to a damper motor. CONSTITUTION:When air conditioned air is blown out of a blowing port 4, a spherical damper 7 is set to a state in which an opening 6 of an orifice 5 is opened. That is, as a damper motor 14 is rotated in one direction, an adjusting bolt 15 connected and fixed to the damper motor 14 is also concurrently rotated and its rotation causes a bolt 10 to be pulled up. The spherical damper 7 is moved away from the opening 6 under this rotation and upwardly, thereby the conditioned air passed through a duct 2 passes through the opening 6 and flows toward a blowing port 4. At this time, since the spherical damper 7 shows an air-stream circular line at its entire circumference, so that even if there are a large amount of air, the air shows a smooth flow speed, the air flows toward the blowing port 4 and no noise occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a blowing device for supplying air into a room from a duct type air conditioner installed in the ceiling.

BACKGROUND OF THE INVENTION In recent years, duct type air conditioners have become popular, in which the main body of the air conditioner (hereinafter referred to as an air conditioner) is installed in the attic, and conditioned air is sent to each room through ducts.

Conventionally, this type of blowing device has been constructed as shown in FIGS. 4 and 5. That is, a damper 101 is provided inside the main body 100 that serves as an air outlet into the room, and the damper 10
1 is attached to a shaft 102 and connected to a damper motor 103. The damper 101 is composed of a first partition plate 104 and a second partition plate 105 provided inside the main body 100, and when closed, a first space 106 and a second space 10 are separated.
It separates 7. In addition, the side surface 1 of the main body 1.00
．． An adapter 109 that connects to a duct (not shown) is attached to the outside of 08.

In such a configuration, air from an air conditioner (not shown) enters the main body 100 from the adapter 109 as a suction port, and the damper 101 is in close contact with the first partition plate 104 and the second partition plate 105. During this time, air blowing is stopped in the first space 106.

On the other hand, the shirt l-102 is driven by the damper motor 103.
rotates, and the damper 101 closes the first partition plate 10.
4 and the second partition plate 105 when opened (dotted line position), the first space 106 communicates with the second space 107, and air is supplied into the room through the air outlet 110.

Problems to be Solved by the Invention In such a conventional configuration, air from an air conditioner passes between both end surfaces of the damper 101 and the first partition plate 104 and the second partition plate 105, and the rotation of the damper 101 Because the rate of change in the passage cross-sectional area is large and the air flow changes rapidly from the first space 106 to the second space 107,
During this air flow, both end surfaces of the damper 101 and the first partition plate 1
04 and the end faces of the second partition plate 105, there was a problem in that wind noise was generated and transmitted into the room as noise.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a low-noise blowing device for air conditioning that can smoothly blow air and prevent wind noise.

Means for Solving the Problems In order to solve this problem, the present invention provides an orifice in which an opening is provided inside a main body corresponding to the air outlet, a spherical damper that opens and closes the opening, and a spherical damper that opens and closes the opening. The damper includes a bolt that is fixed to the spherical damper and held by a threaded portion of the base, and the bolt is provided with an adjusting screw portion that is threadedly engaged with an adjusting bolt that is fixed to the damper motor.

With this configuration, when stopping air blowing toward the outlet, the damper motor is rotated to move the bolt downward, and at the same time, the spherical damper is moved downward and brought into close contact with the orifice opening to stop blowing air. When stopping and blowing air into the room,
The damper motor is rotated in the opposite direction from when it is stopped to move the spherical damper fixed to the bolt upwards, opening the opening and allowing air to flow along the circumference of the spherical damper.
Even at the throttle part of the opening, the flow flows in a streamlined manner, making the wind speed smooth.
This will prevent noise.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3. That is, an adapter 3 connected to an air conditioner main body (not shown) through a duct 2 is provided on one side of the main body 1. An orifice 5 is provided inside the main body 1 in correspondence with an outlet 4 that blows air downward into the room. The opening 6 of the orifice 5 has a spherical shape, and a constricted portion 9 is formed so that a spherical damper 7 made of resin forms a contact portion 8.
have. The spherical damper 7 is fixed to a bolt O at the upper part, and this bolt 10 is attached to the main body 1.
It is screwed into a threaded portion 13 of a base 12 which is fixed to the top surface 11 of the base 12 and holds the bolt 10. An adjustment bolt 15 connected to the damper motor 14 is provided at the upper part of the bolt 10, and is screwed into an adjustment screw part 16 provided at the center of the upper part of the bolt 10, so that the bolt 10 can move up and down. I have to. The damper motor 14 includes:
A cover 17 is provided to hold the damper motor 14 and cover the inside of the damper motor 14 to prevent dust from entering.

In the above configuration, if conditioned air is to be blown out from the outlet 4, the spherical damper 7 opens the opening 6 of the orifice 5, as shown in FIG. That is, when the damper motor 14 is rotated in one direction, the adjustment bolt 15 connected and fixed to the damper motor 14 is also rotated at the same time, and this rotation causes the bolt 10 to be pulled up. This rotation causes the spherical damper 7 to move upward away from the opening 6, and the conditioned air passing through the duct 2 flows through the opening 6 to the outlet 4, but at this time, the spherical damper 7 7 has a circular streamline around the entire circumference, so even if the air volume is large, the flow velocity is smooth and the air outlet 4
There is no noise at all. Further, since the constricted portion 9 of the orifice 5 is also formed in the flow direction of the wind speed, the flow speed is very smooth.

Next, when you want to stop blowing out the air, energize the damper motor 14 and rotate it in the opposite direction.
0 rotates while being screwed into the adjusting screw part 16, and the bolt 10
moves in the downward direction. That is, the spherical damper 7 moves downward and comes into contact with the constricted part 9 of the orifice 5, and the third
It is formed as a close contact part 8 shown in the figure, and the air blowing is stopped. The adjustment position of the spherical damper 7 can be determined by the time when the damper motor 14 is energized. Since it flows to the side, no noise is generated even when the damper is fully opened or when the damper is closed.Although the spherical damper 7 is made of resin in this embodiment, it is possible to use hard rubber or the like. Needless to say, the same effect can be obtained.

Effects of the Invention As is clear from the description of the embodiments described above, the present invention comprises: an orifice having a constriction portion in the main body toward the air outlet; a spherical damper that opens and closes the constriction portion; The configuration includes a bolt that threads into the base, and an adjustment screw part above the bolt into which the adjustment bolt fixed to the damper motor is threaded, so that when the air blowing is stopped, the spherical damper moves to the orifice's constriction part. In addition, when blowing air indoors, the air volume can be adjusted by setting an arbitrary distance between the throttle part and the spherical damper using the damper motor. , No matter whether the wind speed is high or low, there is almost no noise as it flows around the circumferential surface (wind noise is also eliminated,
This has the effect of eliminating harshness from the ears.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional configuration diagram showing the opening of the blowing device of an air conditioner according to an embodiment of the present invention, FIG. 2 is a cross-sectional configuration diagram showing the closing of the blowing device of the air conditioner, and FIG. FIG. 4 is a perspective view of a blowing device of a conventional air conditioner, and FIG. 5 is a sectional view of the blowing device of the conventional air conditioner. 1... Main body, 4... Air outlet, 5...
... Orifice, 6... Opening, 7...
...Spherical damper, 10...Bolt, 12...
...Base, 13...Threaded part, 14...
...Damper motor, 15...Adjustment bolt, 16
...Adjustment screw part. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] an orifice having an opening corresponding to the air outlet inside the main body; a spherical damper having a spherical shape for opening and closing the opening;
A blowing device for an air conditioner, comprising a bolt fixed to the spherical damper and held by a threaded portion of a base, and the bolt is provided with an adjusting screw portion that is threadedly engaged with an adjusting bolt fixed to the damper motor.