CN203257296U

CN203257296U - Kitchen and bath air-exhausting countercurrent-preventing blind window

Info

Publication number: CN203257296U
Application number: CN 201320093713
Authority: CN
Inventors: 蔡笑
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-22
Filing date: 2013-02-22
Publication date: 2013-10-30
Anticipated expiration: 2023-02-22

Abstract

The utility model discloses a kitchen and bath air-exhausting countercurrent-preventing blind window. An electromagnet, a spring and a crank connecting-rod system are adopted inside a controlling box connected with the window to control the opening and shutting of the blind windows in the window, the fact that the blind windows can be sufficiently opened during air exhausting of a kitchen and a toilet is ensured, and the windows are tightly pressed on sealing rubber rings by the tension supplied by the spring when the blind window is shut. The kitchen and bath air-exhausting countercurrent-preventing blind window can be tightly shut, has a good countercurrent-preventing function, and prevents peculiar smells in a public air duct of a building from entering into a room.

Description

A kind of kitchen guarding's air draft counterflow-preventing shutter

Technical field

The utility model relates to a kind of kitchen guarding's exhaust equipment, the shutter that especially has the counterflow-preventing function.

Background technology

At present, residential building kitchen guarding exhaust system lacks effective counterflow-preventing equipment, normally relies on a pair of lightweight butterfly air door to prevent the refluence of pipeline gas when not air draft.Deadweight or the very little back-moving spring of elastic force by damper blade when this butterfly air door stops air draft make it to close, blow open by wind-force because during air draft be, so the deadweight of blade and the elastic force of back-moving spring can not be too large, otherwise when weak air draft, will affect the unlatching of air door.So, because the impact of extraneous wind direction, wind-force and air pressure, above-mentioned butterfly blade usually is difficult to closely close, thereby makes the peculiar smell in the public air channel enter indoor.

Once the someone had applied for the patent (number of patent application 88200994) of " have self-locking, from the exhaust fan of releasing device " by name, gravitation and repulsion between this patent utilization electromagnet and the permanent magnet, solved the open and close problem of air door, but do not have to solve when under the state that full trrottle opens, stopping air draft, magnet spacing on air door housing and the air door has exceeded the magneticaction scope, how to make the problem of air door autoshutdown.If still by air door deadweight and action of reset spring, the open degree problem of air door with still can have weak air draft the time.

The utility model content

In order effectively to solve the counterflow-preventing problem of residential building kitchen guarding exhaust system, the utility model provides a kind of counterflow-preventing shutter.Under magneticaction, open fully during this shutter air draft, when stopping air draft under the pulling force effect of spring tight closing, have good counterflow-preventing effect.

Technical scheme is as follows: these blind integrated compression moulding forms are divided into window and control box two parts by dividing plate.Blade of louver window rotating shaft in the window is passed dividing plate and is fixed with the crank shaft in the control box, and reverse 180 ° of blade and crank are fixed also and can be rotated around the axis; But the fixing crank of each parallel window leaf right-hand member is the system of a flexible rotating by the connecting rod parallel hinges, and the window leaf in the control window rotates synchronously; During the energising air draft, the electromagnet energising in the control box, the armature adhesive by drag cable pulling crank connecting link system, opens window leaf half-twist fully; When stopping air draft, the electromagnet outage, armature pulls open, and simultaneously spring pulling crank connecting link system reverse half-twist band active window leaf is closed.When the window leaf was closed, crank connecting link overlapped at vertical direction, and the direction of pull of spring to obtain maximum tension arm, is pressed on the O-ring seal of window the window leaf perpendicular to crank.

The beneficial effects of the utility model are: shutter is opened fully during air draft, and is irrelevant with the wind-force size; The pulling force that spring provides when closing is pressed on the window leaf on the O-ring seal, and shutter is closed tightly, has good counterflow-preventing function.

Description of drawings

Fig. 1 is forms front view of the present utility model.

Fig. 2 is window A-A section right view.Be illustrated as the shutter closure state.

Fig. 3 is control box B-B section right view.Be illustrated as window leaf closure state.

Fig. 4 is control box B-B section right view.Be illustrated as window leaf opening.

Fig. 5 is each parts relationship and and window leaf graph of a relation in the control box.

Fig. 6 is electrical schematic diagram.

Fig. 7 is one of the application example schematic diagram.

Fig. 8 is two schematic diagrames of application example.

1. windows among the figure, 2. control box, 3. dividing plate, 4. blade of louver window, 5. O-ring seal, 6. installing hole, 7. electric source connecting box, 8. crank, 9. connecting rod, 10. spring, 11. drag cables, 12. armature, 13. beating type electromagnets, 14. commutation diodes, 15. electrical machinery of ventilator.

The specific embodiment

Below the contrast accompanying drawing further describes the specific embodiment of the present utility model.Yet appended diagram and following content only provide reference and explanation usefulness, are not to be to restriction of the present utility model.Under the prerequisite that does not break away from the utility model design and principle, the simple change of having done or part are replaced, and all should be considered as protection domain of the present utility model.

With reference to accompanying drawing 1 and accompanying drawing 2, integrated pressure plastic window body is divided into window (1) and control box (2) two parts by dividing plate (3), and there is electric source connecting box (7) control box (2) lower end.Parallel window leaf (4) right-hand member rotating shaft is passed dividing plate (3) in control box (2).Window (1) is all around at window leaf (4) closed place plane layout O-ring seal (5).Window (1) all around positive and negative all is designed with installing hole (6).

Control box (2) is interior by the rotatable 90 ° synchro switch control system of parallel window leaf (4) in spring (10), beating type electromagnet (13) and crank (8) connecting rod (9) the system's composition control window (1).Each unit status in the control box (2) when accompanying drawing 3 is depicted as window leaf (4) closure.Each unit status in the control box (2) when accompanying drawing 4 is depicted as window leaf (4) unlatching.In the control box (2) each parts relationship and with window leaf (4) relation such as accompanying drawing 5, crank (8) is fixed by reverse 180 ° of square opening and prism and window leaf (4), and can rotate around the axis.Crank (8) in each window leaf (4) rotating shaft by connecting rod (9) parallel hinges together, but and flexible rotating, consist of all parallel window leaf (4) synchronous rotary mechanisms in the control window (1).

Such as accompanying drawing 6, commutation diode (14) is connected with beating type electromagnet (13), and is in parallel with electrical machinery of ventilator (15) through electric source connecting box (7).During the energising air draft, commutation diode (14) exchanges 220V and carries out halfwave rectifier, for beating type electromagnet (13) provides virtual value 156V direct current, armature (12) adhesive, drag cable (11) pulling crank (8) connecting rod (9) system that connects armature (12) and hinge place, crank (8) connecting rod (9) lower end, make the crank (8) that connects window leaf (4) rotate synchronously 90 °, crank (8) connecting rod (9) is mutually vertical, under the pulling force and the acting in conjunction of air draft pressure of drag cable (11), make window leaf (4) from 90 ° of unlatchings of closed position synchronous rotary, as shown in Figure 4.The first suction of electromagnet (13) is window leaf (4) 1.5～2 times of spring (10) pulling force when closing.Under window leaf (4) closed condition, should not overlap between drag cable (11) and crank (8) connecting rod (9), be advisable with 30 ° of angles.Window leaf (4) was opened 90 ° when the length of adjustment drag cable (11) and angle made armature (12) adhesive.

When stopping air draft, electromagnet (13) outage is under the reversal interlocking relay square effect of spring (10), 90 ° of crank (8) reverse rotations, spring this moment (10) is although elongation reduces, and tension arm increases rapidly, window leaf (4) is closed, see accompanying drawing 2.Close closely for assurance window leaf (4), close rear spring (10) direction of pull level, the vertical direction that overlaps with crank (8) connecting rod (9) is vertical, such as accompanying drawing 3, to obtain the maximum pull arm; Simultaneously, close rear spring (10) and must be in extended state, 5～8N is advisable with pulling force.

Embodiment one shown in Figure 7 is the blower fan forward type.The blinds forms are fixed on the body of wall of public air channel, and the indoor exhaust wind pipeline is screwed in forms front installing hole (6).

Embodiment two shown in Figure 8 is that blower fan is rear-mounted.The blinds forms are fixed on the body of wall of public air channel, and electrical machinery of ventilator (15) is screwed the installing hole (6) in the forms back side.Be applicable to indoor without pipeline air draft pattern.

Claims

1. kitchen guarding's air draft counterflow-preventing shutter, it is characterized in that: forms are divided into window (1), control box (2) two parts by dividing plate (3), and control box (2) is interior by parallel window leaf (4) the synchro switch control system in spring (10), beating type electromagnet (13) and crank (8) connecting rod (9) the system's composition control window (1).

2. shutter according to claim 1 is characterized in that: described connecting rod (9) will with fixing each crank (8) parallel hinges of parallel window leaf (4) rotating shaft, but consist of the synchronous rotating autocontrol system of 90 ° of flexible rotatings.

3. shutter according to claim 1, it is characterized in that: when stopping air draft, described spring (10) is extended state, its pulling force vertically acts on crank (8) connecting rod (9) that in the vertical direction overlaps.

4. shutter according to claim 1, it is characterized in that: when the energising air draft, described beating type electromagnet (13) is to do 90 ° of rotations by a length and adjustable drag cable (11) the pulling crank (8) of angle, and crank (8) connecting rod (9) is mutually vertical.

5. shutter according to claim 1 is characterized in that: described beating type electromagnet (13) be after connecting with a commutation diode (14) with electrical machinery of ventilator (15) place in circuit in parallel.