CN2186479Y

CN2186479Y - Gravity closed-open cooling ventilation door

Info

Publication number: CN2186479Y
Application number: CN 93242132
Authority: CN
Inventors: 毛志甫
Original assignee: No41 Inst Ministry Of Electronics Industry
Current assignee: No41 Inst Ministry Of Electronics Industry
Priority date: 1993-10-15
Filing date: 1993-10-15
Publication date: 1995-01-04
Anticipated expiration: 2003-10-15

Abstract

The utility model relates to a gravity closed and opened cooling ventilation door. Wings (2) are horizontally arranged in a wing frame (1), shafts (3) passes through shaft seats fixed on the wings (2), the shafts (3) and the wings are in the clearance fit, and the two ends of each shaft are fixed on the wing frame (1); one end of each wing (2) is provided with balance weights (4), and the wing frame (1) is provided with blocks (6). When the air cooling machine induces the draft downwards, the wings (2) can be rotated around the shafts (3) to open an air door under the pressure difference action; when the draft is stopped, the wings (2) are closed under the action of the balance weights (4) and the blocks (6).

Description

Gravity closed-open cooling ventilation door

The utility model relates to a kind of movable closed device, especially cooling air flap that is used for closing any opening.

When the hatch machine cooling system was blower fan work to the requirement of air door, air door was opened synchronously; When blower fan quits work, the air door close synchronously.Existing air door structure has two kinds, and a kind of is the manual air door of board plug type, and it needs the duty manual operation of operating personnel according to blower fan, and automaticity is very low; The 2nd, the mechanical type air door is made of motor, decelerator, gear, power transmission shaft, though its automaticity is high, complex structure, cost are higher.

To be that design is a kind of can open and close cooling air flap with blower fan duty synchronous opening/closing, gravity simple in structure to the purpose of this utility model under action of gravity.

For achieving the above object, adopt following technical scheme: place the wing (2) in it to constitute main body of the present utility model by wing frame (1) and level, one end of wing (2) is provided with counterweight (4), axle (3) passes axle bed (5) and the matched in clearance that is fixed on the wing (2), axle (3) two ends are fixed on the wing frame (1), the weight of its one side wing (2) is slightly less than another side wing (2) and counterweight (4) weight sum, on the wall of wing frame (1) with respect to counterweight (4) block (6) is set, the position of block (6) makes wing (2) maintenance level.

By the structure of technique scheme as seen, when the downward air draught of fan starting, because axle (3) has the area of the area of counterweight (4) one flanks fans (2) less than opposite side wing (2), wing (2) will promptly be opened around axle (3) rotation under the effect of pressure reduction; When blower fan cuts out when stopping air draught, because the gravity of band counterweight (4) one sides is big, will under the effect of gravitational difference, close wing (2), obviously, its structure is simply many than the mechanical type air door.

Fig. 1: example structure figure;

The A-A cutaway view of Fig. 2: Fig. 1;

The vertical view of Fig. 3: Fig. 1.

Wherein: 34 counterweights of 1 wing frame, 2 wings, 5 axle beds, 6 blocks.

The utility model is described in further detail below in conjunction with embodiment:

Referring to Fig. 1,2,3, axle (4) level is fastened on the wing frame (1), with axle bed (5) matched in clearance, the wing (2) that is connected with axle bed (5) can be moved flexibly around axle, when the size of wing (2) should be able to make it level and wing frame (1) slightly gapped, for preventing wing under the closure state (2) upset, on the diameter vertical, block (6) is set with axle (4), counterweight (4) adopts bolted on wing (2).

Therefore, when cooling blower starts, the wind-force of inhaling acts on the wing (2) downwards, owing to the different wings (2) that take place of the compression area of axle (3) both sides rotate around axle (3), thereby opened cooling air flap, cold wind enters incubator box from both sides through wing frame (1), its intake size has determined the size of wing (2) angle of rotation, the size of face wing (2) angle of rotation depends on the size of cooling fan flow again, owing to rely on principle of inertia automatic open close air door fully, functional reliability is good.

Claims

1, gravity opens and closes cooling air flap, place the wing (2) in it to constitute by wing frame (1) and level, it is characterized in that: an end of wing (2) is provided with counterweight (4), axle (3) passes axle bed (5) and the matched in clearance that is fixed on the wing (2), axle (3) two ends are fixed on the wing frame (1), the weight of its one side wing (2) is slightly less than another side wing (2) and counterweight (4) weight sum, on the wall of wing frame (1) with respect to counterweight (4) block (6) is set, the position of block (6) makes wing (2) maintenance level.