TWM469451U - Reverse flow sealing structure of ventilating fan outlet - Google Patents

Description

Reverse wind tight structure of ventilation fan outlet

This creation is a reverse wind tight structure that can achieve the function of anti-gas counterflow and simple structure.

Referring to the eighth to fifteenth drawings, the conventional ventilating fan structure 80 includes a suction end portion 81 for supplying a gas flow 91 into the ventilating fan structure 80, and a discharge end portion 82 including an exhaust pipe member 821. And a valve member 822 disposed therein, the exhaust pipe member 821 has an exhaust pipe inner wall 82B, the valve member 822 has a valve member contour portion 82B, and can be vented at a home position P3 and a unidirectional exhaust A positional change between the position P2; a forced air extracting device 83 is disposed between the suction end portion 81 and the discharge end portion 83 for forcing the air flow 91 (see the twelfth and thirteenth drawings) from the suction end portion 81 flows in the direction of the discharge end 82.

It is important that a gap portion 82C is formed between the valve member contour portion 82B of the conventional valve member 822 and the exhaust pipe inner wall 82A, even if the forced air extracting device 83 does not force the air flow 91 from the suction end portion 81 toward the discharge end portion 83. The direction of flow, and the valve member 822 is located at the original position P3, but the gas 92 at the end of the discharge end 83 (see the fourteenth and tenth Five maps, such as dirty air between buildings, will still flow back from the gap portion 82C to the suction end portion 81 (e.g., on one of the floors of the building), causing air pollution with no blocking effect at all.

This creation is a reverse wind tight structure that can achieve the function of anti-gas counterflow and simple structure.

The lack of improvement in this creation lies in the fact that the traditional ventilation fan structure cannot prevent the backflow of dirty air.

In order to achieve the foregoing objective, the present invention provides a reverse wind tight structure for a ventilating fan outlet, the ventilating fan structure comprising: a suction end for supplying air to the ventilating fan structure; and a discharge end portion comprising: an exhaust The pipe member has an inner wall of the exhaust pipe; a check device is pivotally disposed in the exhaust pipe member, and is switchable between an airtight position and a one-way exhaust position, and the check device has a first a circumferential portion and a second circumferential portion; a forced air extracting device is disposed between the suction end portion and the discharge end portion for generating a forced flow from the suction end portion toward the discharge end portion; The dense portion is disposed on the inner wall of the exhaust pipe and includes a first tight member and a second tight member; respectively corresponding to the first and the second circumferential portion; thereby, when from the suction end The direction of the discharge end generates a forced flow, the check device is pushed from the airtight position to the one-way exhaust position; when the forced flow is stopped from the suction end toward the discharge end, the non-reverse The device is gravity-derived from the one-way exhaust position The airtight position is changed back to the airtight position, and the first and second hollow members are in airtight contact with the first and second circumferential portions, respectively, so that the circumferential portion and the inner wall of the exhaust pipe are airtight.

(10), (80) ‧ ‧ ventilation fan structure

(11), (81) ‧ ‧ inhalation end

(12), (82) ‧ ‧ discharge end

(121), (821) ‧ ‧ exhaust pipe fittings

(122)‧‧‧Reversing device

(12A), (82A) ‧‧ ‧ exhaust pipe inner wall

(12B) ‧‧‧First circumference

(12C)‧‧‧Second circumference

(12D)‧‧‧ pivot arm

(13), (83) ‧‧‧ forced air extraction device

(14) ‧ ‧ 止 密

(141) ‧‧‧ First stop

(142) ‧‧‧Second stop

(20)‧‧‧Magnetic device

(21)‧‧‧First magnetic parts

(22)‧‧‧Second magnetic parts

(822)‧‧‧ Valves

(82A) ‧‧‧The inner wall of the exhaust pipe

(82B)‧‧‧Valve profile

(82C) ‧ ‧ crevice

(91)‧‧‧ Airflow

(92) ‧ ‧ gas

(P1) ‧ ‧ airtight location

(P2)‧‧‧One-way exhaust position

(P3)‧‧‧ Original location

The first picture is an exploded view of the creation.

The second figure is a schematic view of the first figure.

The third figure is a schematic diagram of the main structure of the second figure.

The fourth figure is a schematic view of the front side of the second figure.

The fifth picture is a schematic diagram of the forced airflow of this creation.

The sixth figure is a schematic diagram of the singular device in the unidirectional exhaust position.

The seventh picture is a schematic view of the inversion device of the present invention in an airtight position.

The eighth figure is an exploded view of the conventional device.

The ninth figure is a schematic diagram of the eighth figure.

The tenth figure is a schematic diagram of the main structure of the ninth figure.

The eleventh figure is a schematic view of the front side of the ninth figure.

Figure 12 is a schematic diagram of the forced airflow of a conventional device.

The thirteenth diagram is a schematic view of the gas valve of the conventional device in a one-way exhaust position.

The fourteenth figure is a schematic diagram of the air leakage of the conventional device.

The fifteenth figure is a schematic view of the front side of the fourteenth figure.

Referring to the first, second, third and fourth figures, the present invention is an upwind deadlock structure of a ventilating fan outlet, the ventilating fan structure 10 comprising: a suction end portion 11 for supplying air to the ventilating fan structure 10; a discharge end portion 12 comprising: an exhaust pipe member 121 having an exhaust pipe inner wall 12A; and a non-return device 122 Provided in the exhaust pipe member 121, and switchable between an airtight position P1 (refer to the seventh figure) and a one-way exhaust position P2 (refer to the fifth and sixth figures), the check device 122 has a a first circumferential portion 12B and a second circumferential portion 12C; a forced air extracting device 13 is disposed between the suction end portion 11 and the discharge end portion 12 for the discharge end portion 11 toward the discharge end portion 12 The direction of the forced flow is generated; a tight portion 14 is disposed on the inner wall 12A of the exhaust pipe, and includes a first tight member 141 and a second retaining member 142; respectively corresponding to the first and second circumferences The portions 12B and 12C; thereby, when a forced flow is generated from the suction end portion 11 toward the discharge end portion 12, the non-return device 122 is pushed by the airtight position P1 to the one-way exhaust position P2; When the forced flow is stopped from the suction end portion 11 toward the discharge end portion 12, the non-return device 122 is gravity-received from the one-way exhaust position P2. Returning to the airtight position P1, and the first and second tight members 141 and 142 are in airtight contact with the first and second circumferential portions 12B and 12C, respectively, so as to be connected to the inner wall 12 of the exhaust pipe. The air is in an airtight state.

In practical applications, the non-return device 122 has the first circumferential portion 12B, the second circumferential portion 12C, and a pivoting arm 12D. The pivoting arm 12D is configured to pivot the pivoting device 122. It is connected to the inner wall 12A of the exhaust pipe.

The creation further includes a magnetic device 20 having a first magnetic member 21 and A second magnetic member 22 is coupled to the exhaust pipe inner wall 12A and the first circumferential portion 12B, respectively, when the non-return device 122 borrows gravity from the one-way exhaust position P2 (see the sixth figure) Returning to the airtight position P1 (refer to the seventh figure), the first and second magnetic members 21 and 22 are magnetically attracted to each other to achieve the structure for assisting the positioning of the non-return device 122.

That is, when the forced air extracting device 113 is activated, an air flow 91 is generated from the suction end portion 11 toward the discharge end portion 12 (see FIG. 5), and the air flow 91 takes the non-return device 122 from the airtight position. P1 is pushed to the one-way exhaust position P2 to perform air circulation. When the forced air extracting device 113 is closed, the non-returning device 122 is returned to the airtight position P1 by gravity from the one-way exhausting position P2, and the first and second securing members 141 and 142 are in airtight contact respectively. First, the second circumferential portions 12B and 12C are thus airtight with the inner wall 12 of the exhaust pipe to prevent the turbid air in the air duct from flowing back into the room.

The advantages of this creation are as follows:

[1] Anti-gas countercurrent. The first and second airtight members on the inner wall of the exhaust pipe are substantially airtight with each other because the first and second circumferential portions of the non-return device are located in the airtight position. The gas at one end of the discharge end can be prevented from flowing back into the other floor from the discharge end toward the suction end. This design prevents the dirty air (such as smoke) from passing through some floors of the building. Ventilation lines that float upwards to other floors.

[2] The structure is simple. The creation is only on the inner wall surface of the exhaust pipe, corresponding to the first and second circumferential portions of the non-return device, respectively, the first and second airtight members are arranged, so that the position can be prevented from being discharged when the forced air suction device is not activated. The dirty air at one end of the end flows back to other spaces, and the structure is quite simple.

(10) ‧ ‧ ventilation fan structure

(11)‧‧‧Inhalation end

(12) ‧ ‧ discharge end

(121)‧‧‧Exhaust pipe fittings

(122)‧‧‧Reversing device

(12A)‧‧‧The inner wall of the exhaust pipe

(12B) ‧‧‧First circumference

(12C)‧‧‧Second circumference

(12D)‧‧‧ pivot arm

(13) ‧‧‧Forcible drafting device

(141) ‧‧‧ First stop

(142) ‧‧‧Second stop

(21)‧‧‧First magnetic parts

(22)‧‧‧Second magnetic parts

(91)‧‧‧ Airflow

(P2)‧‧‧One-way exhaust position

Claims (3)

The anti-winding structure of the ventilating fan outlet includes: a suction end portion for supplying air to the ventilating fan structure; and a discharge end portion comprising: an exhaust pipe member having an exhaust pipe a backing device pivotally disposed in the exhaust pipe member and switchable between an airtight position and a one-way exhaust position, the check device having a first circumferential portion and a second circumferential portion a forced air extracting device is disposed between the suction end portion and the discharge end portion for generating a forced flow from the suction end portion toward the discharge end portion; a stop portion is disposed in the exhaust pipe The inner wall includes a first tight member and a second retaining member respectively corresponding to the first and second circumferential portions; thereby, a forced flow is generated from the suction end toward the discharge end The non-return device is pushed from the airtight position to the one-way exhaust position; when the forced flow is stopped from the suction end toward the discharge end, the check device is from the one-way exhaust position Returning to the airtight position by gravity, and the first and second Blind lines were airtight contact with the first, the second circumferential portion, so that the inner wall of the exhaust pipe between the air-tight manner. The anti-wind deadlock structure of the ventilating fan air outlet according to claim 1, wherein the non-return device has the first circumferential portion, the second circumferential portion and a pivoting arm, and the pivoting arm is provided The non-return device is pivotally connected to the inner wall of the exhaust pipe in a swingable state. The anti-wind deadlock structure of the ventilating fan air outlet according to claim 1, further comprising a magnetic attraction device having a first magnetic member and a second magnetic member respectively coupled to the row On the inner wall of the trachea and the first circumferential portion, when the non-return device is returned to the airtight position by gravity from the one-way exhausting position, the first and second magnetic members are magnetically attracted to each other. A structure that assists in positioning of the non-return device.