TWM582066U - Full-cover type backdraft damper structure - Google Patents

Abstract

The utility model relates to a full-cover reverse damper structure, which mainly comprises an air outlet provided at an air blower and a baffle disposed at the air outlet, and a frame body. The ventilating opening is provided with a symmetrical fixing portion; the baffle is provided with a rotating portion embedded with an activated carbon cotton cloth; and the frame system is provided with a limiting portion corresponding to the fixing portion.置于 After the rotating portion of the baffle is placed on the fixed portion, the frame is fixed to the body of the exhaust fan, and the rotating portion of the baffle is limited by the limiting portion, so that the baffle is formed by the rotating portion. It can be rotated. Thereby, when the exhaust fan is not in use, the baffle can cover the air outlet of the exhaust fan and be filtered through the activated carbon cotton cloth to avoid backflow of the exhaust gas, thereby preventing the external dirty air tuyere from entering the room; When the fan draws out the air, the airflow can apply a thrust to the baffle, so that the baffle rotates at an angle with the rotating portion as an axis and rises upward to form an opening, so that the dirty air in the room can be smoothly discharged from the opening.

Description

Full-cover reverse damper structure

The present invention relates to a full-cover reverse damper structure, in particular, a full-cover type anti-air damper that can prevent an external dirty air tuyere from entering the room to avoid exhaust gas recirculation, and can discharge indoor dirty air when the exhaust fan is operated. structure.

Because the bathroom, toilet or general basement of the home is a confined space, in order to maintain the circulation of air, a vent is usually provided on the wall, and an exhaust fan is arranged at the vent; the pipe is connected by the exhaust fan To the outside, to discharge indoor dirty air to keep the indoor air fresh. However, when the exhaust fan does not operate, the external dirty air will be recirculated into the room through the vent, causing the indoor air to be polluted, causing considerable trouble to the residents.

Modern building buildings usually use a shared ventilation duct as a ventilation path for the residents' toilets. Therefore, all the households use their own exhaust fans to discharge the odor from the toilet into the ventilation ducts. However, when the exhaust fan does not operate, the odor in the ventilation duct will be poured into the toilet through the vent, causing the air in the toilet to be contaminated. In view of this, the applicant has continuously researched and experimented, and designed a full-cover reverse damper structure to avoid exhaust gas recirculation and to discharge indoor dirty air.

The main purpose of the present invention is to provide a full-cover reverse damper structure for preventing external dirty air vents from entering the room, avoiding exhaust gas recirculation, and discharging indoor dirty air when the blower is operating, thereby maintaining indoor air. Fresh.

The full-cover reverse damper structure includes an air outlet disposed at the air blower and a baffle disposed at the air outlet, and a frame. Wherein, the venting portion is provided with a symmetrical fixing portion; the baffle is provided with a rotating portion; and the frame system is provided with a limiting portion corresponding to the fixing portion.置于 After the rotating portion of the baffle is placed on the fixed portion, the frame is fixed to the body of the exhaust fan, and the rotating portion of the baffle is limited by the limiting portion, so that the baffle is formed by the rotating portion. It can be rotated. Thereby, when the exhaust fan is not in use, the baffle can cover the air outlet of the exhaust fan to avoid backflow of the exhaust gas, thereby preventing the external dirty air tuyere from entering the room; and when the exhaust fan extracts the air, the air flow can be A thrust is applied to the baffle so that the baffle is rotated upward by an angle with the rotating portion as an axis to form an opening, so that the dirty air in the room can be smoothly discharged from the opening.

In the above-mentioned full-cover reverse damper structure, the baffle is in the shape of a box body, and the groove portion is embedded with an activated carbon cotton cloth. When the baffle covers the air outlet of the exhaust fan, a little dirty air can be obtained. By the filtration of the activated carbon cotton cloth, the effect of preventing the external dirty air tuyere from entering the room is improved.

In the above-mentioned full-cover reverse damper structure, the air outlet is provided with a protrusion of a suitable height on the periphery to facilitate the cover of the baffle.

Please also refer to Figure 1 and Figure 2, together with Figure 3, which is a perspective view, an exploded view and a cross-sectional view of the exhaust fan of the present invention. As shown in the figure, the creation system includes a blower 1 and a baffle 2 placed on the exhaust fan 1 and a frame 3. The exhaust fan 1 is provided with a transmission mechanism such as a motor and a fan, and has an engaging portion 11 at one end thereof, a step portion 111 at a periphery of the engaging portion 11, and a surface on the surface of the engaging portion 11 The air outlet 12 is provided with a protrusion 13 having a suitable height on the periphery, and two symmetrical fixing portions 14 are disposed above the air outlet 12, and the fixing portions 14 are long column-shaped, and are fixed in the air outlet 12 The fixing portions 14 are respectively provided with two symmetrical fixing posts 15 , and the fixing posts 15 are respectively provided with screw holes 151 . In the present embodiment, the air outlet 12 is formed in a shape of about two-thirds of a circle, and the cavities 141 are formed in a circular shape and extend from the front portion of the fixing portion 14 to a proper depth.

The baffle 2 is corresponding to the air outlet 12 of the exhaust fan 1 and is in the shape of a box body. The central portion of the upper edge is provided with a connecting piece 21 of an inverted L shape, and the two ends of the connecting piece 21 are respectively provided with a shaft. In the rotating portion 22, an activated carbon cotton cloth 23 is embedded in the groove portion.

The frame 3 is provided with a sleeve portion 31 corresponding to the blower engagement portion 11 and a frame 32 connected to the sleeve portion 31. The frame 32 is provided with a fixing hole 321 . The inner edge of the portion 31 is provided with a shielding piece 33. The shielding piece 33 is provided with a through hole 331 corresponding to the fixing post 15 of the connecting portion 11 of the exhaust fan 1. The rear edge of the shielding piece 33 is downwardly extended and corresponding. In the present embodiment, the limiting portions 34 are elongated, and a notch 341 extending upward from the bottom edge by an appropriate length is provided in the second limiting portion 34 of the fixing portion 14 of the exhaust fan 1.

With the above-mentioned members, the rotating portion 22 of the baffle 2 is placed in the fitting groove 141 of the fixing portion 14 of the connecting portion 11 of the exhaust fan 1 after assembly, and then the sleeve portion 31 of the frame body 3 is placed. The ventilating portion 1 is connected to the venting portion 11 (the step portion 111 is provided on the periphery of the engaging portion 11 so that the sleeve portion 31 of the frame body 3 can be nested), and is fixed by the fixing member 4 through the through hole 331. The column 15 is fixed to the base of the exhaust fan 1 through the fixing member 5 through the fixing hole 321 of the bracket 32, and the frame body 3 is fixed to the body of the exhaust fan 1, and the limiting portion is fixed after the frame body 3 is fixed. 33 can be held at the leading edge of the fixing portion 14, and the rotating portion 22 of the flap 2 is restrained, so that the shutter 2 can be rotated by the rotating portion 22. Thereby, when the exhaust fan 1 is not in use, the baffle 1 can cover the air outlet 12 of the connecting portion 11 of the exhaust fan 1 to avoid backflow of the exhaust gas, thereby preventing the external dirty air tuyere from entering the room, and when the baffle 2 is When the air outlet 12 of the air blower 1 is housed, a little dirty air can be filtered by the activated carbon cotton cloth 23 to enhance the effect of preventing the external dirty air tuyere from entering the room. When the air blower 1 draws air out, the airflow can apply a thrust to the baffle 2, so that the baffle 2 is rotated upward by an angle with the rotating portion 22 as an axis to form an opening, so that the dirty air in the room can be smoothly opened by the opening. Discharge, and achieve the effect of keeping the air fresh.

Please refer to Figure 4 for the usage status diagram of the creative exhaust fan. As shown in the figure, when the present invention is used, the exhaust fan 1 can be installed above the ceiling 6 of a bathroom or a toilet, and the tubular body 7 can be connected to the outdoor by the sleeve portion 31 of the casing 3. When the exhaust fan 1 is operated, the indoor air can be drawn into the exhaust fan 1 and discharged to the outside through the pipe body 7, and the external dirty air can be prevented from being poured into the room.

Please refer to Figure 5, which is the diagram of the back-up action state of this creation. As shown in the figure, when the blower 1 is not in operation, since the baffle 2 loses the air thrust outward from the exhaust fan 1, the weight of the baffle will return it to the in-situ cover of the exhaust fan 1 11 of the air outlet 12 to avoid exhaust gas recirculation, thereby preventing the external dirty air tuyere from entering the room. Wherein, since the air outlet 12 is provided with a protrusion 13 of a proper height on the periphery, the baffle 2 can completely cover the air outlet 12. Moreover, since the baffle 2 covers the air outlet 12, there may be some gaps due to incomplete airtightness, and the little dirty air can be filtered by the activated carbon cotton cloth 23 placed on the baffle 2 to prevent external contamination. The effect of the air vents entering the room.

Please refer to Figure 6 for the venting action state diagram of this creation. As shown in the figure, when the blower 1 is actuated, the airflow is applied to the inner surface of the baffle 2, and the baffle 2 is tilted upward by the angle of rotation of the rotating portion 22, thereby being lifted upward. An opening is formed between the plate 2 and the air outlet 12, so that the dirty air pumped by the air blower 1 can be smoothly discharged outward from the opening to achieve the effect of keeping the air fresh.

The foregoing embodiments are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the details of the present invention are not deviated from the spirit of the present invention.

In summary, the present invention is constructed with a suction fan having a connecting portion and an air outlet, and a baffle plate and a frame provided at the air outlet to form a full-cover reverse damper structure. In order to prevent the external dirty air tuyere from entering the room, to avoid exhaust gas recirculation, and when the exhaust fan is operating, the indoor dirty air can be discharged, thereby keeping the indoor air fresh. For a practical design, it is a novelty creation. If you apply for a patent in accordance with the law, you will be punished by the Bureau of Public Information, and you will be granted a patent as soon as possible.

1‧‧‧Exhaust fan  11‧‧‧Connecting Department  111‧‧‧  12‧‧‧air outlet  13‧‧‧ Turkic  14‧‧‧ Fixed Department  141‧‧‧ slotted  15‧‧‧Fixed column  151‧‧‧ screw holes  2‧‧‧Baffle  21‧‧‧Connecting piece  22‧‧‧Rotation  23‧‧‧Active carbon cotton cloth  3‧‧‧ frame  31‧‧‧Settings  32‧‧‧ Shelf  321‧‧‧Fixed holes  33‧‧‧Mask  331‧‧‧through hole  34‧‧‧Limited  341‧‧‧ gap  4‧‧‧Fixed parts  5‧‧‧Fixed parts  6‧‧‧ ceiling  7‧‧‧ tube body  

The first picture is a perspective view of the exhaust fan of the present creation.  Figure 2 is an exploded view of the creation.  Figure 3 is a cross-sectional view of the creation.  Figure 4 is a diagram showing the state of use of the creative exhaust fan.  Figure 5 is a diagram of the back-up action state of the creation.  Figure 6 is a diagram of the exhaust operation state of the present creation.  

Claims (7)

A full-cover reverse damper structure comprising:  An exhausting fan is provided with an engaging portion at one end thereof, and an air outlet is arranged on the surface of the connecting portion, and two fixing portions are symmetrically arranged on the upper side of the air outlet, and the fixing portions are respectively provided with the fitting grooves;  a baffle is in the shape of a box body, and a connecting piece having an inverted L shape is disposed at a central position of the upper edge thereof, and a shaft-shaped rotating portion is respectively disposed at two ends of the connecting piece;  a frame body is provided with a sleeve portion corresponding to the suction fan engaging portion, the inner edge of the sleeve portion is provided with a cover sheet, and the rear edge of the mask portion is provided to extend downward and corresponds to the suction portion of the exhaust fan. Two limit parts;  When assembling, the rotating portion of the baffle is respectively placed in the recessed portion of the fixing portion of the suction fan connecting portion, and the sleeve portion of the frame is placed in the suction fan connecting portion, and the frame is fixed to the exhaust fan. After the frame body is fixed, the limiting portions can be held at the front edge of the fixing portion, and the rotating portion of the blocking piece is limited, so that the baffle can be rotated by the rotating portion; thereby, When the exhaust fan is not in use, the baffle can cover the air outlet of the suction fan connecting portion to avoid backflow of the exhaust gas, thereby preventing the external dirty air tuyere from entering the room, and when the exhaust fan draws out the air, the airflow is right. The baffle applies a thrust so that the baffle rotates at an angle with the rotating portion as an axis and is lifted up to form an opening, so that the dirty air in the room can be smoothly discharged from the opening, thereby achieving the effect of keeping the air fresh.   The full-face type backstop damper structure according to claim 1, wherein the air outlet of the suction fan connecting portion is provided with a protrusion at an appropriate height on the periphery to facilitate the cover of the baffle. The full-face type anti-sliding damper structure according to the first aspect of the invention, wherein the two fixing portions of the suction fan connecting portion are provided with two symmetrical fixing columns, and the frame system is provided on the shielding piece. Corresponding to the through hole of the fixing column, the sleeve portion of the frame body is placed on the connecting portion of the suction fan, and the fixing body passes through the through hole to lock the fixing column, and the frame body is fixed to the body of the exhaust fan. The full-face type anti-valve structure according to claim 1, wherein the two limiting portions disposed on the frame are elongated, and the lower portion is extended upward by the bottom edge by an appropriate length. After the frame is fixed to the body of the exhaust fan, the limiting portion can be held at the front edge of the fixing portion, and the rotating portion of the blocking piece is limited, so that the baffle can be rotated by the rotating portion. The shaft is configured to be rotatable. The full-face type reverse damper structure according to the first aspect of the invention, wherein the air outlet of the suction fan engagement portion is set to have a shape of about two-thirds of a circle. The full-face type backstop damper structure according to the first aspect of the invention, wherein the slot formed by the two fixing portions above the air outlet of the suction fan is circular and extends from the front to the rear of the fixed portion. Appropriate depth. The full-cover reverse damper structure according to claim 1, wherein the baffle is embedded with an activated carbon cotton cloth, and when the baffle covers the air outlet of the suction fan connecting portion, a little dirty air It is possible to enhance the effect of preventing the external dirty air tuyere from entering the room by filtering the activated carbon cotton cloth.