SU1260644A1 - Device for controlling air flow - Google Patents

Description

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The invention relates to a technique of ventilation and can be used in ventilation systems of agricultural and industrial buildings.

The aim of the invention is to simplify the design.

FIG. 1 is a schematic diagram of an apparatus for controlling air flow; in fig. 2 is a diagram of the operation of the device in various modes.

B - the same, in the mode of increasing the air flow with the center of rotation AZ;

ho - height of the air inlet hole formed by the flap and curviline The device for controlling the air flow includes a housing 1 connected to the duct 2 with a self-closing valve in the form of a flap 3 fixed rotatably on the axis 4 with an installed surface; lever 5 on it, on which hardened-he is the height of the flap.

The flax load 6, while the wall 7 of the housing 1, located on the side of the flap 3, is designed as a curvilinear surface, the axis 4 of rotation of the flap 3 and the mechanism for changing the operating mode of the flap (not shown) are located on the straight wall 8 of the hull 1. The center 9 of curvature forming the curved surface of the wall 7 is located on the straight line forming

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A device for controlling the flow of air works as follows.

When the pressure in the duct 2 and then in the housing 1 of the valve 3 changes, it changes its position relative to the curved surface of the wall 7 around the axis 4 until the moments of forces generated by the pressure change and the lever 5 with the load 6 are balanced.

the opposite wall 8 of the housing 1. The axis 4 25 is provided by changing the height of rotation of the flap 3 installed with the possibility of an air outlet hole.

At the same time, depending on the setting of the axis 4 of the fastening of the shutter 3, the device will work either in the air flow stabilization mode (see Fig. 2) with the center of rotation 30 AI, BI - the path of the end of the flap relative to the curved surface, or in the flow reduction mode air (A2, B2), or in the mode of increasing the displacement along the rectilinear forming wall 8. The mechanism for changing the mode of operation is made in the form of an element for moving the axis 4 of rotation of the flap 3.

The distance 1 between the axis 4 of rotation of the flap 3 and the center 9 of the curved surface of the housing wall is determined from the relations

no air flow (AZ, VZ).

1260644

1 0.47 (ho + h.), 47 -b, (ho + h.); , 47 (hs + h,);

where c is the distance between the axis of rotation 4 of the flap and the center 9 of the curved surface of the housing wall in the stabilization mode with the center of the axis of rotation 4 with AI;

It is the same in the mode of reducing the air flow with the center of rotation A2;

B - the same, in the mode of increasing the air flow with the center of rotation AZ;

ho is the height of the air outlet hole formed by the flap and curved surface; he - sash height.

Noah surface; he - sash height.

A device for controlling the flow of air works as follows.

When the pressure in the duct 2 and then in the housing 1 of the valve 3 changes, it changes its position relative to the curved surface of the wall 7 around the axis 4 until the moments of forces generated by the pressure change and the lever 5 with the load 6 are balanced.

At the same time, depending on the n 4 fastenings of the shutter 3, the device is either in the stable air flow mode (see Fig. 2) at a price AI, BI is the trajectory of the damper relative to the curvature, or in the reduced air mode (A2, B2) or in dir

no air flow (AZ, VZ).

AT 2

Editor M. Bandura Order 52 1/34

Compiled by G. Turunov

Tehred I. VeresKorrektor M. Sharoshi

Circulation 649Subscribe

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

fig 2

Claims (2)

1. DEVICE FOR REGULATING THE AIR CONSUMPTION, comprising a body with a self-closing valve in the form of a sash, rotatably mounted on an axis with a lever mounted on it, on which the load is fixed, and a mechanism for changing the operating mode, while the axis of rotation of the sash is located on one of the walls the casing, and the opposite wall is made with a curved surface, characterized in that, in order to simplify the design, the casing wall, on which the axis of rotation of the sash is located, is made with a flat surface, in one the plane with which the center of curvature of the generatrix of the curved surface of the opposite wall of the casing is located, the axis of rotation of the sash is mounted to move along the generatrix of the rectilinear wall, and the mechanism for changing the operating mode is made in the form of an element of movement of the axis of rotation of the sash. 2. The device according to π. 1, characterized in that the distance between the axis of rotation of the sash and the center of the curved surface of the housing wall is determined from the relations 0.47 (ho + h _c ); 0.47 (ho — H h _c ); B> <0.47 i® (ho + hj, tic where is the distance between the axis of rotation © of the sash and the center of the curved surface of the body wall in the stabilization mode; Em - the same, in the mode of reducing consumption; Ev - the same, in the mode of increasing consumption; ho is the height of the air outlet formed by the sash and curved surface; h _c - sash height. FIG. /