KR101335542B1 - Damper having assistant fin for air handling - Google Patents

Abstract

Disclosed is an air conditioning damper comprising a frame, multiple shafts combined in parallel up and down on the frame, and multiple blades combined to be rotated around each shaft, wherein the shaft is biased to one side in the width direction to be asymmetrically combined, and the lower end of the upper blade is overlapped with the upper end of the lower blade to be closed in two adjacent blades among multiple blades when the up and down direction is defined based on the closed state wherein the width direction of the blade becomes the vertical direction. When the front side in the path that the wind ordinarily blows is defined as front, and the back side is as back, an auxiliary wall body projected from the blade toward front and capable of increasing the rotation power applied to the blade while interrupting the fluid flow in a certain range as the rotational parameter toward the opening direction of the blade is bigger, is installed on the upper part of the portion that is overlapped when closing, and the lower side of the shaft in the lower front side of the blades. According to the present invention, the damper is easily operated and open in a low pressure, the phenomenon that the blade excessively shakes is able to be reduced once it is opened, and the problem such as noise generation is able to be reduced.

Description

Air damper with auxiliary wall {damper having assistant fin for air handling}

The present invention relates to a damper, and more particularly, to open air according to the positive pressure caused by the operation of the air conditioner without a special driving means among the commonly used dampers combined with the duct of the air conditioner or air conditioning system for air conditioning, air flow It relates to the structure of the damper to prevent the backflow of the.

A damper in an air conditioning system is a means of controlling the air flow interruption and the amount of air flow by changing its position and attitude in the air flow.

The dampers have various configurations for various purposes, but they are variously connected, but the frames are installed by connecting to air ducts, walls, and air conditioner fans, and the one or more blades are closed or angled in the frame section. It is made to be open as you go.

For example, there is a shock damper that automatically opens and closes in accordance with the operation of the air conditioner in the air conditioning system, thereby supplying and blocking the duct line. The operation principle of the shock damper is relatively simple, and the blade whose shaft is biased to one side of the blade width is opened by rotating the wind around the shaft due to the wind pressure by the operating air conditioner fan (FAN). Function to prevent backflow 첵 damper required for duct line is called pulsation type damper because it is installed in the place where air flow is only required to prevent the reverse flow like vein of blood vessel in our body.

양 The positive pressure at which the damper starts to open can be adjusted in many ways, but it is sometimes necessary to make a damper that works even at low positive pressures.

In addition, in the case of shock dampers operating at low positive pressures, the pressure is always applied to the same level through the frame passage section, and the blades block the passage when vertically positioned. The force per unit area, or pressure, acting in the direction of rotating the blade is relatively large and can be easily opened. However, as the blade is rotated about its axis and the opening angle increases, the force per unit area (air pressure) acting in the direction of rotating the blade decreases, and the force to restore the original closed position due to the weight of the blade increases. You lose. Therefore, the air pressure for the blade to rotate and remain open must increase as the rotation angle from the initial position increases.

Ideally, it is desirable if the blade position is stabilized at the same rotational angle as the rotational force or restoring force as the force of gravity to act on the blade and the blade rotation force near the passage, but the damper is closed and the damper is slightly open. The amount of gas passing through the cross section of the passage is very different and the positive pressure on the blade can also be easily changed.

In this situation, when a positive pressure acts as low as the starting pressure, the damper blade increases the time taken for the blade to maintain a constant angle and the transient vibration time. In addition, when a low positive pressure and the pressure acts inconsistently, the vibration continues, and as the blade of the damper continues to move, the pressure on the duct or air conditioner side may continue to have a pattern that is not constant.

In addition, when the blade of the damper shakes transiently, a portion of the blade may come into contact with the damper stopper or other peripheral parts, thereby generating noise. In particular, when the blade is first opened in a closed state, it may be frequently touched by a stopper or the like by moving greatly in overshoot operation.

Although it is possible to think of how to make the blade light aluminum or thinner by operating at low positive pressure and reducing vibration, the above problem is not solved enough, and the durability or mechanical rigidity due to the thin thickness is not reduced. Other problems such as deformation could occur.

Republic of Korea Patent Application Publication No. 10-2010-0034739

The present invention is to solve or alleviate the above-mentioned problems of the conventional damper, and to provide a damper that can be easily operated and opened even at low pressure, and can suppress the phenomenon that the blade excessively shakes after being opened. .

In addition, an object of the present invention is to provide a damper that can reduce the problem of noise generation due to the shaking of the conventional damper and can block the air flow well in the closed state.

Air conditioning damper of the present invention for achieving the above object

A frame, a plurality of shafts coupled to each other up and down in parallel to the frame, and a plurality of blades coupled to each other so as to rotate about each of the shafts, and the shafts are asymmetrically coupled to one side in a width direction; In the damper formed in the width direction of the blade in the vertical direction to distinguish the vertical direction based on the closed state in the two blades of the plurality of blades adjacent to the lower edge of the upper blade overlaps with the lower blade top,

When the front of the normal wind blowing path is referred to as the front and the rear as the rear, the lower portion of the front side of the blade is lower than the shaft and closed when the upper portion overlaps when projecting forward from the blade in a certain range, preferably In the rotational displacement range of 0 ° to 90 °, as the rotational displacement in the opening direction of the blades increases, an auxiliary wall which increases the rotational force acting on the blades may be installed while disturbing the flow of the fluid.

In the present invention, it is preferable that a cushioning member is installed at the rear side upper end of the blade to increase the sealing force when the adjacent structure is contacted in the closed position and to mitigate the impact and noise of the touching moment.

In the present invention, an additional wall protruding forward from the front side of the blade and rotatable about the axis is installed and the frame is a stopper that touches the additional wall to prevent rotation of the blade when the additional wall rotates more than a predetermined time. It may be installed, in this case, it is preferred that the additional wall is provided with a buffer member that can mitigate the noise and impact in contact with the stopper.

In the present invention, the balance wall may be coupled to the additional wall or the upper portion of the blade to reduce the influence of gravity acting as a restoring force when the blade is opened under positive pressure and the rotation displacement increases.

In this case, a plurality of counterweight mounting portions having different distances from the shaft may be installed on the upper or additional walls of the shaft so as to adjust the position where the balancing weight is coupled so as to adjust the displacement of the blade according to the positive pressure.

According to the present invention, it is possible to alleviate the problem of unstable pressure or noise generated in the air conditioning system while the blade is not easily stabilized and vibrated in the conventional damper.

In addition, according to an aspect of the present invention, the weight balance around the axis is changed according to the rotational displacement of the blade, the damper is easy to operate in the early stage, the restoring force in the open state and easy to maintain the open state stably. Can provide.

In addition, according to an aspect of the present invention, it is possible to provide a damper that can mitigate noise and impact when contact with the surroundings occurs according to the blade movement in the damper, and can block the air flow well in the closed state.

1 is a front view of one embodiment of the damper of the present invention;
Figure 2 is a plan view of one embodiment of the damper of the present invention,
3 is a right side view of an embodiment of the present invention damper;
Figure 4 is a side cross-sectional view of an embodiment of the damper of the present invention;
Figure 5 is a side cross-sectional view showing that the counterweight and counterweight coupling can be changed in another embodiment of the damper of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4, the damper is a plurality of horizontal coupled to form a four-sided frame and a part of the frame (jamb: 11) formed in a vertical direction in parallel to each other in a row in the vertical direction The axial assembly 20 and a plurality of blades 30 are coupled to each of the axial assembly 20 to rotate about the rotation center. The blade 30 may rotate about the axial assembly 20 coupled together to form a substantially rectangular plate. The shaft assembly 20 is made up of its subsidiary structure, such as the shaft 21 and the shaft connecting portion 23.

The frame is formed by forming a flange 14 protruding outward at both ends of the short quadrangular tube as a whole, and the quadrangular tube forms a quadrangular ring when viewed in a gas flowing direction. Thus, the frame section cut to one side of the ring has a U-shape and an open portion of the U-shape toward the outside, and the gas flows through the space surrounded by the inner surface of the quadrangular tube, and the blade 30 for controlling the gas flow therein. Is installed.

 Two pillars 11 corresponding to two sides of the quadrilateral may be provided with a sleeve, a bearing 19, and the like, which rotatably support the shaft 21 of the shaft assembly 20. On the inner surface of the upper frame 12 connecting the upper ends of the two pillars 11 and the lower frame 13 connecting the lower ends of the two pillars 11 in the quadrangular frame, a backflow prevention stopper 16 protrudes into an inner empty space, respectively. , 17) is formed. The non-return stoppers 16 and 17 are located in the same vertical plane as the plane of the blade 30 in the closed position, but the non-return stopper 16 of the upper frame 12 is located behind the top blade upper 31 and is located at the lower side frame. The non-return stopper 17 of 13 is located in front of the lowermost blade lower end 35. Therefore, the blade is prevented from rotating in the opposite direction to the opening direction in the closed position parallel to the vertical plane.

Here, the shaft 21 has a shape in which one end of each of which is formed long is not coupled to the two pillars 11, but only both ends of the shaft 21 are coupled to the two pillars 11 without an intermediate portion. There is no practical functional difference compared to the axis.

In this embodiment, there is an additional wall 25 protruding forward from the axis assembly 21 in the closed state. The additional wall 25 may protrude forward from the portion of the blade 30 coupled with the shaft assembly 20 instead of protruding from the shaft connecting portion 23 for connecting the shaft 21 and the blade 30. have. In addition, an inner wall of the two pillars 11 of the quadrangular frame has an opening limit stopper 18 that protrudes inward to be positioned directly below the shaft assembly 20 so that the additional wall is rotated when the blade 30 is rotated to the opening position. (25) touches the opening limit stopper 18 to limit the maximum opening angle. The maximum opening angle is preferably 90 degrees.

At this time, when the shock absorbing member 45 is attached to the lower surface of the additional wall 25, the blade 30 is opened and the additional wall 25 is preferably open, so that the noise and impact can be prevented when the stopper 45 is opened.

One end of the arm 27 perpendicular to the axial direction is coupled to an end of the shaft 21 passing through the wall of one pillar 11, and a parallel pin 28 parallel to the shaft is formed at the other end of the arm. The plurality of parallel pins 28 positioned above and below each other are coupled to the link bar 29. As a result, the plurality of blades 30 can be opened and closed together.

The two sides parallel to the axial direction of the four-sided blade 30 is called the long side, and the other two sides of the blade are called the short side, and the long side is the length and the short side corresponds to the width. It is biased to one side of the width direction without. The side closer to the shaft 21 in both ends of the width direction (both ends of the short side) is above (upper side) when the blade is in the closed position.

The plurality of blades constituting the damper 30 is in the vertical position with each other, the bottom of the upper blade is in contact with the top of the lower blade when the closed state is made to overlap when viewed from the front to the rear.

When the blade 30 extends beyond the shaft 21 in the width direction from the blade top 31, the blade top 31 is formed to be stepped with the other part of the front in front of the gas flow direction, and the shock absorbing member. 41 is attached to the top of the blade and has a shape of protruding slightly rearward while filling the step. Thus, when the blade 30 is in the closed position from the open position, the shock absorbing member 41 is in contact with the front side of the adjacent upper blade bottom 35 or when it is in contact with the non-return stopper 16 of the inner surface of the upper frame 12. It absorbs shock and noise, and in the closed position serves to prevent the leakage of air back and forth.

In the present embodiment, the lower side of the front side of the blade 30, which is below the axis and closes when the part is overlapped with the backflow prevention stopper 17 or the lower blade upper end 31, the auxiliary projecting forward from the blade 30 The wall 37 is installed. When the auxiliary wall 37 is formed to protrude perpendicularly to the front side of the blade 30, the auxiliary wall 37 is in the opening direction (opening) of the blade 30 in a predetermined range, preferably in a range of 0 to 90 degrees of rotational displacement. Direction), the greater the rotational force in the opening direction acting on the blade while interrupting the flow of fluid.

Therefore, such a configuration is such that even in the case of a damper acting at a low positive pressure, the force per unit area acting in the direction of rotating the blade 30 increases as the blade 30 rotates about the shaft 21 and opens. Pressure) becomes smaller and due to the gravitational action on the blade 30, it is returned to its original closed position, thereby restraining the unstable movement of repeated restoration and opening by accumulation of positive pressure, and facilitating a constant opening state continuously. .

Just as the shaft 21 does not need to be formed long over the entire length of the blade 30, the auxiliary wall 37 does not necessarily have to be formed over the entire length of the blade 30. The formation position and the protruding width of the auxiliary wall 37 can also be adjusted to suit the air conditioning system.

5 is an embodiment different from the previous embodiment.

In the embodiment of Figure 5, a balance weight 51 is coupled to the top of the blade of the previous embodiment. The counterweight 51 may serve to reduce the influence of gravity acting as a restoring force as the rotational displacement increases as the blade is opened under positive pressure.

That is, as the counterweight 51 is fixed at a position further outward from the shaft 21 in the blade upper end 131, the inertia moments at the blade upper side and the lower side relative to the shaft 21 at the blade open position of the damper are increased. As there is no big difference, the resilience due to gravity is reduced compared to the case where the balance is not installed.

In this embodiment, in order to control the operation of the blade, a plurality of positions (indicated by a through-hole on the drawing) in which the balance weight is installed at the blade upper end 131 may be formed in plural so as to be able to be adjusted as necessary.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the appended claims. Those skilled in the art will appreciate that. Accordingly, all such modifications and equivalents may be resorted to, falling within the scope of the invention.

11: pillar 12: top frame
13: bottom frame 14: flange
16, 17: non-return stopper 18: rotation limit stopper
19: bearing 20: shaft assembly
21: shaft 23: shaft connection
25: additional wall 27: arm
28: parallel pin 29: link bar
30: blade 31: blade top
33: blade step 35: blade bottom
37: auxiliary wall 41, 43, 45: buffer member
51: balance weight

Claims (4)

A frame, a plurality of shafts 21 coupled to each other up and down in parallel to the frame, and are coupled to rotate about each of the shafts 21, the shaft 21 is asymmetrical to one side in the width direction It is provided with a plurality of blades 30 are coupled to each other, the width direction of the blade 30 is vertical in the vertical direction based on the closed state is divided into two adjacent blades among the plurality of blades (30) In the air-conditioning damper is formed so that the upper blade bottom overlaps with the lower blade top in
When the front side on the normal wind blowing path is referred to as the front and the rear side, the lower side of the front side of the blade 30 is below the shaft 21 and overlaps in the closed position directly from the blade 30 directly. An air damper, characterized in that the auxiliary wall protruding forward 37 is installed. The method of claim 1,
The upper side of the rear side of the blade 30, the damper for air conditioning, characterized in that the damping member 41 is provided to increase the sealing force and to mitigate the impact and noise of the moment of contact when touching the adjacent structure in the closed position. The method of claim 1,
An additional wall 25 projecting forward from the shaft 21 in the closed position or forwardly from the front side of the blade 30 at the portion engaged with the shaft 21 and capable of rotating about the shaft; ) Is installed,
The frame is provided with an open-limiting stopper 18 which contacts the additional wall 25 and prevents the rotation of the blade 30 when the additional wall 25 and the blade 30 rotate in a constant rotational displacement.
The additional wall (25) is a damper for air conditioning, characterized in that the shock absorbing member 45 is installed in the contact with the opening limit stopper 18 to mitigate the noise and impact. The method of claim 1,
Counterweight 51 is installed on the top of the blade 30,
The air conditioner damper, characterized in that a plurality of mounting portions are formed on the upper end so that the counterweight (51) can be installed while varying the distance from the shaft (21).

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