Air flow rate regulation device

FIELD: control or safety systems or apparatus, particularly air flow regulation means.

SUBSTANCE: device comprises body with the first wall having curvilinear surface and valve installed in the wall and made as gate with lever and weight. Lever and weight have axes secured to body wall, which is opposite to body wall having curvilinear surface. Body walls have profiled surfaces in working valve gate area.

EFFECT: increased reliability.

4 cl, 1 dwg

 

The invention relates to techniques for ventilation and can be used in exhaust ventilation systems, agricultural and industrial buildings.

A device for controlling the flow of air, comprising a housing installed inside the valve (A.S. SU 1439363 F 24 F 13/08 11/04 from 23.11.88.). The disadvantage of this device is the difficulty of its execution.

The closest in technical essence is a device for controlling the flow of air, comprising a housing, one wall of which is made with a curved surface, is installed inside a valve in the form of a leaf and the lever with the load, the axis of which is fixed to the housing wall, the opposite wall with a curved surface (A.S. No. 1260644, SU, F 24 F 11/04, publ. 30.09.86. Bull. No. 36).

The disadvantage of this invention is the complexity of manufacture of the device, since the choice of optimum parameters of operation of the valve requires a very accurate calculation. Furthermore, the design of the chassis airflow switch turns the material.

The objective of the invention is improving the efficiency of the device while simplifying the structure of the device and reducing its consumption of materials.

This task is solved in that the device for controlling the flow of air, comprising a housing, one wall of which is made is with a curved surface, installed inside a valve in the form of a leaf and the lever with the load, the axis of which is fixed to the housing wall, the opposite wall with a curved surface, the surface of the wall in the working area of the leaf valve are perforated. Goods made of several kinematically related items. Under the load installed the pallet. The pallet is placed at a height between the top and the next cargo.

The drawing shows a diagram of the device

Device for controlling the flow of air includes a housing 1, is connected to the duct 2 with a self-closing valve in the form of the leaf 3, mounted for rotation on an axis 4 which is installed on the lever 5, in which the flexible traction 6 kinematically associated with several cargo - the top 7, followed by 8, 9, respectively, arranged in a stationary pallet 10. Thus the wall of the housing 11 located opposite straight wall 12 and fastening the sash 3, made in the form of a curved surface. The leaf valve 3 has a working area 13 in the housing 1, within which a curved wall 11 of the casing and the straight side 14 is made with perforations 15.

A device for controlling air flow works as follows.

When the pressure of the air in the duct 2 fold 3 changes its position relative to the positive curvilinear wall 11 of the housing 1.

In the absence of a difference in pressure outside the housing 1 and the duct 2 and within the last leaf 3 under the action of the load 7 on the lever 5 is in the initial position, in which the living section of vent holes formed by punching, the maximum.

With a moderate increase in pressure outside the housing 1 and the duct 2 fold 3 changes its position relative to the curved surface of the wall 11 and side walls 14, cutting off part of the perforation on these walls 11 and 14 to balance the torques generated by the pressure difference and the lever 5 is raised from the platform 10 cargo 7, 8. Maintaining the desired air flow is achieved by reducing the living section exhaust holes on the side and curvilinear walls 14 and 11, respectively, in the area between the flap 3 and the housing 1 in the working area 13 of the sash 3 valve.

When the maximum design pressure outside the door 3 will take its extreme opposite to the initial position at which the minimum living section of vent holes formed by punching on the side and curvilinear walls 14 and 11, respectively, and to balance the torques generated by the pressure difference, using all cargo 7, 8, 9, interacting with the lever 5 and to each other via a flexible rod 6, creating Maxim the capacity opposing torque.

The length of the lever 5 and the total weight of cargo 7, 8, 9 sets the range of the regulated pressure. Individual mass and sequence of interaction cargo 7, 8, 9 adjusts the law regulating air flow in certain areas of the range.

1. Device for controlling the flow of air, comprising a housing, one wall of which is made with a curved surface, is installed inside a valve in the form of a leaf and the lever with the load, the axis of which is fixed to the housing wall, the opposite wall with a curved surface, characterized in that the surface of the wall in the working area of the leaf valve are perforated.

2. The device according to claim 1, characterized in that the cargo is made of several kinematically related items.

3. The device according to claim 2, characterized in that the pressure is set to the pallet.

4. The device according to claim 3, characterized in that the pallet is placed at a height between the top and the next cargo.



 

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