RU2541295C2 - Device of stabilisation of air flow rate - Google Patents

Abstract

FIELD: ventilation.

SUBSTANCE: device of stabilisation of air flow rate comprises a housing 1 with a regulating valve in the form of a stationary disc with slots 2 and a rotating disc 3 with mating slots and a rotation stopper 4. The rotating disc 3 is attached to the common axis 5 with an impeller 6 receiving the pressure of inlet airflow. The axis 5 rests on the stationary disc with the slots 2 and the rack 7. The angle of rotation of the impeller 6 is regulated by tension of the elastic element 8 fastened with one end on the axis 5, and with the other end on the tension adjustment screw 9 of the elastic element 8. The adjustment screw 9 is mounted on the rack 7. The proposed design of the device of stabilisation of air flow rate can be incorporated into the channels of arbitrary orientation in space, including in a horizontal channel.

EFFECT: ability to work without energy consumption from an external source.

4 dwg

Description

The device relates to ventilation systems of buildings for various purposes, in particular to natural exhaust ventilation.

A device for stabilizing and regulating the air flow of the exhaust shaft, containing an adjustable louvre grille, a L-shaped tube connected to a pressure sensor, the latter being electrically connected to the actuator for turning the louvre grille (RF patent No. 2324120, publ. 10.05.2008).

The known device has disadvantages. For its operation, a source of electricity is required, which makes it somewhat difficult to use: it is necessary to lay electric lines to each device, a constant consumption of electricity for the operation of devices is required.

The closest in its technical essence is a device for regulating air flow, comprising a housing, one of the walls of which is made with a curved surface, with a valve installed inside the valve and a lever with a load, the axis of which is fixed to the wall of the housing, the opposite wall with a curved surface, the surface of the walls of the housing in the working area of the valve leaf is perforated. The cargo is made of several kinematically connected elements (RF patent 2277206, publ. 05.27.2006).

The disadvantages of this invention are: its spatial orientation, since a load of several kinematic related elements in a certain way acts only with its vertical orientation in space; the inability to use it in the horizontal inlet channels (valves) installed in the walls of houses with dense windows, which are widely used at present.

The objective of the invention is a device for stabilizing air flow, which can work with any spatial orientation, for example, can be built into a horizontal channel, including a channel in the wall of a building; works without involving an external energy source.

The technical result is the exclusion of the spatial orientation of the device for stabilizing the air flow.

The result is achieved in that in the device for stabilizing the air flow, comprising a housing, a control valve, according to the invention, the control valve consists of a fixed disk with slots mounted on the body, and a rotating disk with reciprocal slots and with a rotation limiter mounted on a common axis with the turbine , perceiving the pressure of the incoming air flow, while the axis at one end is supported on a fixed disk, the other end is on a rack mounted on the housing, the elastic element is fixed at one end on the axis, gim - on the tuning screw mounted on the rack.

Figure 1 schematically shows the design of the proposed device, figure 2 shows a rotating disk with slots and a rotation limiter, figure 3 shows a fixed disk with slots, figure 4 is a view A of the device.

The air flow stabilization device comprises a housing 1, with a control valve in the form of a fixed disk with slots 2 and a rotating disk 3 with reciprocal slots and with a rotation limiter 4. The rotating disk 3 is fixed on a common axis 5 with a turbine 6 that receives pressure of the incoming air stream. The axis 5 rests on a fixed disk with slots 2 and on the rack 7. The angle of rotation of the turbine 6 is regulated by the tension of the elastic element 8, fixed at one end on the axis 5, the other end on the adjustment screw 9 of the elastic element 8. The adjustment screw 9 is mounted on the rack 7.

Device stabilization of air flow is as follows.

With the estimated air flow, the force created by the incoming air flow is compensated by the initial tension of the elastic element 8, the slots of the stationary 2 and movable 3 discs coincide and do not impede the passage of air flow. With increasing air flow, the flow pressure increases on the blades of the turbine 6, it rotates by a certain angle, stretching the elastic element 8, rotates the axis 5 with a disk mounted on it with slots 3, reducing the area for air passage (increasing resistance), which reduces the air flow rate , returning it to a value close to the estimated flow. With the maximum possible increase in air flow, the slots for the passage of stationary air 2 and rotating 3 disks almost overlap, creating the maximum resistance, which returns the air flow to a value close to the estimated flow. The constancy of the stabilized flow rate is achieved by the correct choice of the elasticity of the element 8 and its preliminary tension with the adjustment screw 9. The restrictor 4 does not allow the rotating disk 3 to rotate by an angle greater than the angle of the slot for the passage of air in the fixed disk 2.

The proposed design of an air flow stabilization device achieves its goals: it can be built into channels of arbitrary orientation in space, including a horizontal channel, it works without energy consumption from an external source.

Claims (1)

An air flow stabilization device comprising a body, a control valve, characterized in that the valve consists of a fixed disk with slots mounted on the body, and a rotating disk with reciprocal slots and with a rotation limiter mounted on a common axis with a turbine that receives pressure of the incoming air flow while the axis is supported at one end on a fixed disk, at the other end on a rack mounted on the housing, the elastic element is fixed at one end on the axis, and the other on a tuning screw mounted on a stand e.

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