CN2047338U

CN2047338U - Constant draught device of stack

Info

Publication number: CN2047338U
Application number: CN 88215356
Authority: CN
Inventors: 毕学伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-26
Filing date: 1988-10-26
Publication date: 1989-11-08

Abstract

The utility model discloses a device for the constant suction of chimney. Through the connection of clutch, the upper end of the fume exhausting machine is provided with a mechanism which changes with the speed of wind and generates the corresponding rotating speed. The rotation direction of the mechanism is opposite to the rotation direction of the exhaust of the fume exhausting machine. The device solves the problems that the change of wind speed influences the suction stability of chimney, and stabilifies the suction of chimney in a scheduled range, reducing the phenomenon of the coming out of flame or sparks owing to the hard suction of chimney. Besides, the utility model has the functions of preventing burglary and preventing motor from being burned, and therefore, is suitable to be used on the chimney of coal burning stove.

Description

Constant draught device of stack

The utility model is a kind of device that is used for constant stack draught.

At present, the public for making coal fully burning in cooking stove, requires the chimney of cooking stove to have certain draft when using coal-fired stove.Under the condition that chimney structure is fixed, the size of stack draught depends primarily on extraneous wind speed.When extraneous wind speed was high, the draft that chimney produces was big, and when extraneous wind speed was low, the draft that chimney produces was little.Cause draft constant consequence not to be owing to extraneous wind speed changes: draft is easily extracted flare or Mars out greatly the time and is caused fire from chimney, the coal in the little cooking stove of draft can not fully burn, and emerges in the chimney cooking stove.So the draft of coal chimney is excessive or too smallly all can make troubles to public life.Existing technology is when extraneous wind speed is low, is using hair-dryer on the cooking stove or use air exhauster on chimney, and when extraneous wind speed is high, using the drawing and pulling type plate washer on the chimney truncation surface.The problem that above technology exists is: use the hair-dryer noise big, dust is many, use smoke extractor can't solve extraneous wind speed excessive problem of stack draught when high, using the drawing and pulling type plate washer on the chimney truncation surface is manual adjustment because of plate washer then, can't change and in time change with wind speed, it be relatively poor to use bothersome practicality.

The utility model be to the public provide a kind of make stack draught not be subjected to extraneous wind speed variable effect and automatic constant at a certain device of deciding scope that gives.

Fig. 1 is the front view of the device of the constant stack draught of utility model.

Fig. 2 is the electrical apparatus control circuit schematic diagram of the device of the constant stack draught of the utility model.

Fig. 3 is the front view of another embodiment of the device of the constant stack draught of the utility model.

As shown in Figure 1, be installed in the device of the constant stack draught on the chimney, its housing is by base 1, support 2, shading rain cap, and 3 form, and fix a buncher 4 at support, and buncher 4 lower ends connect a fan blade 5. Axial region connects a clutch in the upper end of buncher 4, the ratchet 6 of clutch is under the effect of extension spring 7, be clamped on the ratchet 8, with ratchet 8, the vane 9 of coaxial connection produces under the effect of wind-force with wind speed and changes and the rotating speed of phase strain, and the direction of rotation of rotation direction during with fan blade 5 smoking. When extraneous wind speed hour, start speed regulating motor 4, fan blade 5 rotations make chimney produce certain draft, at this moment because the rotating speed of buncher 4 surpasses per minute 300 turns to, the centrifugal clutch place separates state, vane 9 does not turn to. When extraneous wind speed is big, chimney self draft more very much not need use buncher 4 to smoke, at this moment vane 9 produces the revolving force that changes with the wind speed size under the wind-force effect, because the low centrifugal clutch that can not make of rotating speed separates, this revolving force reaches fan blade 5 through clutch like this, make fan blade 5 backward rotation, to producing back draught in the chimney, weakened the draft of chimney. If the size of appropriate design vane 9 and fan blade 5 then can obtain making stack draught constant in a certain effect of deciding scope of giving.

The device of the constant stack draught of the utility model compared with prior art has stack draught energy automatic constant, reduces the advantage that fire takes place, makes things convenient for public life.

Most preferred embodiment of the device of the constant stack draught of the utility model can illustrate with reference to Fig. 1.Base 1 can be cast and finish.Support 2, shading rain cap 3, vane 9, fan blade 7 can be manufactured with 1 millimeters thick iron plate.Motor can also can adopt common squirrel cage motor as disliking the motor cost height, but the effect of constant draft be relatively poor with the buncher about 30 watts.On the ratchet 8 of centrifugal clutch and ratchet 6, draw a lead respectively and be connected, and being connected between support 2 and the shading rain cap 3 carried out electrical apparatus insulation with non-contact switch circuit.Whether the dead point occurs during in starting just and burn in order to monitoring motor.In terminal box 10, be provided with binding post, be connected with break alarm circuit 13, play antitheft effect with lead.

Fig. 2 is an electrical schematic diagram of the present utility model, is made up of break alarm circuit 13 and non-contact switch circuit 12.Components and parts in the entire circuit are installed in indoor, by lead circuit a, b end are connected with wiring duct box 10 internal wiring terminals, and a, b terminal shortcircuit made BG when break alarm circuit 13 was flat ₁Last no-bias loudspeaker is noiseless, when a, b end line disconnects BG ₁Obtain bias voltage, through C ₁Feedback effect makes loudspeaker produce buzzing and reports to the police.That the display element of non-contact switch circuit is that LED is installed in is indoor 2 ', 3 ' end is connected with 2,3 ends on Fig. 1, carry out electric insulation because of 2,3 end second, when

clutch

6,8 separates, make the BG in the circuit 12 obtain bias voltage, LED is luminous, because of clutch only could separate when motor rotates at a high speed, whether luminous LED is just knows the motor rotation of whether switching on so observe.

Fig. 3 is another embodiment of the present utility model, and it is to be simplified by the embodiment of Fig. 1 to form, and compares with Fig. 1 embodiment, has saved motor 4, and clutch and electrical control part 10,12,13, this embodiment are applicable to that the cooking stove that burns faggot uses.

Claims

1, a kind of device that is used for constant chimney axle power, drawing and pulling type plate washer by smoke extractor and manual adjustment is formed, feature of the present utility model is, the other end of smoke extractor fan blade [7] axle by centrifugal clutch with can be connected with the mechanism that the wind speed variation produces the respective change rotating speed.

2, device according to claim 1, its centrifugal clutch is made up of ratchet (8) ratchet (6), extension spring (7), and separating rotating speed is more than per minute 300 changes.

3, device according to claim 1, it can change the mechanism that produces the respective change rotating speed with wind speed and be made of the direction of rotation when rotation direction that this mechanism produces and smoking vane (9) rotating shaft (11).

4, device according to claim 2, its ratchet (8), ratchet (6) are connected with non-contact switch circuit (12) by lead, and being connected between support (2) and the shading rain cap (3) should be carried out electric insulation.

5, device according to claim 1, its terminal box (10) inside is provided with binding post, is connected with break alarm circuit (13) by lead.