JPS59158930A - Pressure regulating damper - Google Patents

Abstract

PURPOSE:To prevent the vibration of the blades of a damper by dividing the blade closing an opening into upper and lower sections, working rotation moment corresponding to a difference between the areas of each blade by indoor static pressure and mounting a flow regulating plate on the indoor side and working dynamic pressure when the damper is opened. CONSTITUTION:Blades 6, 7 are installed to the upper and lower sections of a shaft 4 penetrating a casing 1 in the lateral direction. Flow regulating plates 16, 17 cross the inside of the casing in the horizontal direction, and an air current is decided to collide only with the blade 7 when a damper is opened. The weight of a weight 11 is decided so that the product of the difference of areas between the blades 6, 7 and the static pressure of the opening of the damper equalizes with the product of the length of a lever 10 and the weight of the weight 11. Since closing pressure is lower than opening pressure only by some value in the damper, vibration is not generated as seen in known dampers, noises are not also produced, and damage is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure regulating device, and more particularly to a pressure regulating soft tamper that disperses when the pressure in an air-conditioned room exceeds a predetermined pressure.

A common pressure regulating damper of the type described above is a φ damper that closes a rectangular opening, with the damper pivoted near one edge of the opening [-1] and the opening pressure determined by a weight.

This type of damper needs to be fine enough to support the pressure over the entire opening area, and when the damper is opened, it closes again due to the drop in pressure, and this is repeated to prevent the vibration of the damper from opening and closing [↑J
This may cause damage to the damper or the mounting part.

The cause of the above-mentioned failure is that the weight of the damper is extremely heavy and that there is no difference in opening and closing pressure.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pressure adjustment damper for air conditioning, which reduces the weight of the weight and has a pressure difference between opening and closing of the damper.

The general structure of the pressure regulating damper according to the present invention is such that the blade for closing the opening is divided into a first blade above the shaft and a second blade below the shaft. ljJ corresponding to the difference
The amount of deviation of the heavy nail F1 is reduced by making the rolling moment act by the static pressure in the room. Furthermore, the feathers with small faces are
A rectifying plate that covers the damper but receives static pressure is provided on the indoor side so that dynamic pressure is applied when the damper is in position (1) and (2) a difference is created between the opening pressure and the closing pressure.

With this configuration, the indoor static pressure (
51 lower than the predetermined static pressure, vibration of the damper blades will not occur.

Examples and drawings exemplified by Book 5C])] will be described.

1×1 indicates the fluid and force adjustment damper according to the present invention, and the flange 2.3 is attached to the i6 end of the rectangular casing 1 to accommodate the required installation cost (ζ
Take it.Pass through the casing 1 laterally.
Il14 is supported on the side of the casing.

According to the present invention, the mounting position of lTl1++ 4 is a certain distance away from the upper edge 5 of the casing.

Blades 6.7 are mounted above and below the shaft 4. A seat 8.9 is fixed in the casing 1 to form a seat for the vane 6.7. Attach the lever 106 to the vertical protrusion of the shaft 4.
il *' do. ↓ [(Fix the weight 11 along the long plane of the 1-bar 10 to a position of 1 adjustment, and adjust the opening pressure of the damper by 4. The I/bar 10 is not shown in No. When the damper is in the closed position, the water force is extended and the force is applied:
I? Maximum at 1 copper level.

A cover 12 is attached to the outside of the casing 1.

Cover 12) Remove lid 13 iJ' fl?・As heavy as t? Adjust the position of l111 and fix it with Ichimewaji 14. Put a balance weight 15 on the blade 6 (= J ruru.

A baffle plate 16, 17 according to the invention is installed in the casing 1 C-I. The baffle plates 16, 17 run horizontally across the casing and are arranged so that when the damper opens, the airflow only hits the vanes 7. Therefore, the current plate 16 is N4++
It reaches around 4. When the damper is closed, the IHI between the tip of the plate 16 and the shaft 4 is set to a required distance of -4- to cause the blades 6G and 2 to act as static seats when the damper is closed.

The operation will be explained.

According to the present invention, the angle E of the claw needle 11 is determined between the blade 6γIdl (fjb between the pressure difference and the static pressure of opening the damper) to be equal to the height of the lever 10 and the height of the weight 11.

Depending on the distance between the current plate 16 and It'1114, the blade 6
．． Indoor static pressure acts on the space on the right side of Figure 1 of 7.

Adding 7+1 to the blade 6 results in [y1 chain force, and the opening force to the blade 7. Therefore, take the effective surfaces f', ' of the blades 6.7 by 2 and determine 11 only for the difference. Yes. Soaring I
L', the rotation of the damper R, 1l-1 - The weight 11 is much more elongated than when it is near the upper paddy 5 of the casing.

- If the internal pressure exceeds the predetermined static pressure, the first blade 6.7
The closed position shown in the figure (from e<, clockwise around shaft 4, the damper opens. Since the lever 10 is horizontal, if the shaft shifts by 1 rotation, the lever 10σ) rotates to move the weight 11. The force decreases, and the closing force decreases. In history, Seiji is 11 boards 16.
Air flow by 17, i.e. dog mark 20 is vane 7 a)
z, and the airflow motion H] is received by the vane 7.

Thus, when the static pressure in the room is lower than the predetermined static pressure, ↑(diagonal (11 is wing 4r);
Close 7. In the closed dynamic state 1Ji3, only the static pressure acts on the blade 6.7 without the action of Tatsumi・j[, ①], so the damper 1-1 button is maintained at the 1-1 position until the indoor pressure returns to the predetermined level F.

According to the above-mentioned process, according to the present invention, since the closing pressure is a certain value lower than the 1J11 pressure, l'1.chi no Dannogu-like 47.; too'
′: r < , no damage will occur9)

[Brief explanation of the drawing]

FIG. 1 shows part 1 of an IF, force equalization damper according to the present invention.
FIG. 21 is a side view and a right end view of the 21st ikl i'A. 1...Casing 4e・Shaft 6.11190 Vanes 10・1・Lever 11 ・ ・ ・ Weight 12 @ Meeting・Cover 16.17 --- Current plate patent applicant Cliff Co., Ltd. Figure 1-14: =

Claims (2)

[Claims] (1) A pressure adjustment damper that opens when the indoor static pressure reaches a predetermined value, and has an opening that communicates between the chamber and the low-pressure space, and a damper that can rotate around a horizontal axis and In a device equipped with a blade that opens and closes and a lever that is fixed to the shaft and a weight that applies a closing force to one blade, the blade is made into two parts, the first blade above the shaft and the first blade above the shaft. As the second lower blade, the indoor static pressure is 2rN 1
, to generate a rotational moment corresponding to the m1 difference between the second blades, and to provide a rectifying plate on the inner side of the first blade with a smaller surface phase so that the static pressure also acts on the blades of ti. A damper with a pressure adjustment of 11゛. (2) The pressure adjusting damper/< according to claim 1, wherein the lever is horizontal when the damper is closed.