TWI632301B - Air-exhausting structure of a ventilation fan - Google Patents

Abstract

A ventilating fan guide structure is capable of increasing the air flow velocity of an air outlet and avoiding the occurrence of gas countercurrent and turbulence. The system includes: a frame body, the frame body has an accommodation space, an air inlet and an air outlet are communicated with the accommodation space, and the accommodation space is provided with a fan; an air duct, and an air flow channel; An air inlet end is connected to the air outlet, and the air flow channel has another air outlet end; a non-return member is movably pivoted to the air flow channel, and the non-return member can pivot to close or open the air flow channel; and A supercharging member has a top edge and a bottom edge. The supercharging member blocks a part of the area of the air outlet or the airflow channel.

Description

Outlet air guide structure of ventilation fan

The invention relates to a ventilating fan guide structure, in particular to a method that can increase the wind pressure and flow rate of the ventilating fan outlet without changing the output power of the ventilating fan, and can prevent the output airflow from forming at the output end. Countercurrent and turbulence.

Please refer to FIG. 1, which is a conventional non-return type ventilating fan structure. The fan structure 9 is provided with an air outlet 92 on a fan frame 91, and the air outlet 92 is connected to an air duct 93. The air duct 93 has an air outlet port 94. A check member 95 is disposed between the air outlet 92 and the air port 94. The check member 95 is movably pivotally connected to the air guide by a pivot shaft 96. The air duct 93, when the fan wheel 97 of the fan structure 9 rotates to drive the air flow to be discharged toward the air outlet port 94, and under the condition that the output power of the ventilating fan does not change, the discharged air flow will be caused by the setting of the non-return member 95. The airflow speed and wind pressure of the air outlet port 94 are thereby reduced, and even a countercurrent and turbulent flow is formed between the air outlet 92 and the air outlet port 94.

Therefore, it is necessary to improve the airflow flow mode of the ventilating fan, increase the flow speed and wind pressure of the air outlet port, and then prevent the airflow at the air outlet port from forming countercurrent and turbulent flow.

In order to solve the above problems, an object of the present invention is to provide a ventilation fan outlet guide structure, which can increase the wind pressure and flow rate of the outlet of the ventilation fan without changing the output power of the ventilation fan, and can prevent the air flow in the The outlet port forms countercurrent and turbulent flow.

The directionality or its approximate terms in the present invention, such as "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly referred to the directions of the attached drawings, and each direction Sexuality or its approximate terms are only used to assist in explaining and understanding the embodiments of the present invention, and are not intended to limit the present invention.

The ventilating fan air guiding structure of the present invention comprises: a frame body having a containing space, an air inlet and an air outlet communicating with the containing space, and a fan wheel is arranged in the containing space. An air duct, one of which has an air inlet end connected to the air outlet, and the air flow channel has an air outlet; a non-return piece is movably pivotally connected to the air flow passage, and the non-return piece can be Pivoting causes the airflow channel to close or open; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, wherein the non-return member has two pivot points , The bottom edge of the supercharging member is relatively closer to a bottom end portion of the air duct than the top edge, and the bottom edge is located in the axial direction of the frame body and is located between the bottom end portion and the two fulcrum points of the check piece. Between the lines.

According to this, the ventilating fan guide structure of the present invention is provided with the booster in the air flow channel, and the bottom edge of the booster is located at the bottom end of one of the air ducts in the axial direction of the frame body. And the connection between the two fulcrum points of the above-mentioned non-return member, therefore, when the air flow passing through the air flow channel can be achieved by the pressure member, the pressure increase effect of increasing the air flow velocity can be achieved, so that the air flow can also be By easily passing the backstop, it has the effect of avoiding turbulence and turbulence.

Wherein, the non-return member has two fulcrum points, and a connection line is formed between the axes of the two fulcrum points. An upper half is formed above the connection line and has an upper half length, and is formed below the connection line. The half segment has a lower half length, which is longer than the upper half. In this way, the center of gravity of the check piece can be formed in the lower half, and the check piece has the effect of easy pivoting.

Wherein, the inner wall of the airflow channel is provided with two opposite pivot joints, the anti-return member has two fulcrum points, and the two fulcrum points are movably pivotally connected to the two pivot joints. In this way, the anti-return member and the air guide pipe are easily pivoted.

Wherein, the supercharging member is arc-shaped from the top edge to the bottom edge and toward the air outlet end. In this way, the pressure-increasing member has a better effect of increasing the air flow velocity and increasing the pressure.

Wherein, the supercharging member is an air guide pipe connected to the air inlet end by a top edge. In this way, the booster has the effect of being easily assembled to the air duct.

The booster is integrally formed with the air duct. In this way, the supercharging member and the air guide pipe have the effect of easy processing and production.

The ventilating fan air guiding structure of the present invention comprises: a frame body having a containing space, an air inlet and an air outlet communicating with the containing space, and a fan wheel is arranged in the containing space. An air duct, one of which has an air inlet end connected to the air outlet, and the air flow channel has an air outlet; a non-return piece is movably pivotally connected to the air flow passage, and the non-return piece can be The pivoting causes the airflow channel to be closed or opened; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, the frame body having a cover plate, the The supercharging member is connected to the lower surface of the cover plate by a top edge. As such, the booster has the effect of being easily assembled on the cover plate.

Wherein, the pressurizing member is integrally formed with the cover plate. In this way, the supercharging member and the cover plate have the effect of easy processing and production.

The frame body has a cover plate, and the fan wheel is rotatably coupled to the lower surface of the cover plate. In this way, the fan wheel has the effect of being easily assembled on the cover plate.

The ventilating fan air guiding structure of the present invention comprises: a frame body having a containing space, an air inlet and an air outlet communicating with the containing space, and a fan wheel is arranged in the containing space. An air duct, one of which has an air inlet end connected to the air outlet, and the air flow channel has an air outlet; a non-return piece is movably pivotally connected to the air flow passage, and the non-return piece can be Pivoting causes the airflow channel to close or open; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, and the air guide pipe is located at the air inlet end Where there are two side ends, the air outlet of the frame body has two side plates, each of which has two sides. There is one side groove, and the two side ends are respectively fitted into the two side grooves. In this way, the air guiding pipe has the advantages of being easy to be assembled in the frame body and having a better airtight effect.

Wherein, the air duct is located at the air inlet end with the bottom end portion, the air outlet of the frame body has two side plates and an abutting portion, and the bottom end portion is fitted into the abutting portion. In this way, the air guiding pipe has the advantages of being easy to be assembled in the frame body and having a better airtight effect.

Wherein, the air inlet of the frame body has an outwardly expanding portion, and the outwardly expanding portion expands radially away from the accommodating space. In this way, the frame system has the effect of easily introducing airflow and making the airflow flow more smoothly.

The ventilating fan air guiding structure of the present invention comprises: a frame body having a containing space, an air inlet and an air outlet communicating with the containing space, and a fan wheel is arranged in the containing space. An air duct, one of which has an air inlet end connected to the air outlet, and the air flow channel has an air outlet; a non-return piece is movably pivotally connected to the air flow passage, and the non-return piece can be Pivoting causes the airflow channel to close or open; and a supercharging member having a top edge and a bottom edge, the supercharging member blocking a part of the area of the air outlet or the airflow channel, and the air duct at the air inlet end The cover has a top end portion, and the lower surface of the cover plate has a recessed groove, and the top end is fitted into the recessed groove. In this way, the air guiding pipe has the advantages of being easy to be assembled in the frame body and having a better airtight effect.

〔this invention〕

1‧‧‧ frame body

11‧‧‧air inlet

12‧‧‧outlet

13‧‧‧ ring wall

14‧‧‧Fan wheels

15‧‧‧ cover

151‧‧‧Recessed

16‧‧‧Side plate

161‧‧‧Side groove

162‧‧‧Abutment Department

17‧‧‧ Outreach Department

2‧‧‧ air duct

21‧‧‧airflow channel

211‧‧‧Air inlet

212‧‧‧outside

22‧‧‧ side end

23‧‧‧ bottom end

24‧‧‧ Top

25‧‧‧ Pivot

3‧‧‧ Non-return pieces

31‧‧‧ Fulcrum

3a‧‧‧First half

3b‧‧‧The second half

4‧‧‧ booster

41‧‧‧Top margin

42‧‧‧ bottom edge

L‧‧‧ Connect

La‧‧‧ Upper half length

Lb‧‧‧ the length of the second half

S‧‧‧ accommodation space

[Learning]

9‧‧‧fan structure

91‧‧‧fan frame

92‧‧‧outlet

93‧‧‧Air duct

94‧‧‧outlet port

95‧‧‧ Non-return piece

96‧‧‧ Pivot

97‧‧‧Fan wheels

Figure 1: A perspective view of a conventional ventilation fan outflow guide structure.

Figure 2: An exploded perspective view of the first preferred embodiment of the present invention.

Fig. 3: Sectional sectional view of the first preferred embodiment of the present invention.

Figure 4: Schematic diagram of the action situation shown in Figure 3.

Fig. 5: A combined sectional view of a second preferred embodiment of the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, The following is a detailed description of the preferred embodiment of the present invention in conjunction with the accompanying drawings, as follows: Please refer to FIG. 2 and FIG. 3, which are the first preferred embodiment of the ventilation fan outflow guide structure of the present invention. A frame body 1, an air guide pipe 2, a non-return member 3 and a pressure increasing member 4, the air guide pipe 2 is coupled to an air outlet 12 of the frame body 1, and the non-return member 3 is It is movably pivotally connected to the air guide pipe 2, and the supercharging member 4 is interposed between the air outlet 12 and the non-return member 3.

The frame body 1 may be a conventional axial flow fan frame or a fan-type fan frame, which is not limited in the present invention. In this embodiment, the frame body 1 is a fan-type fan frame and has a The accommodating space S, an air inlet 11, and an air outlet 12, the air inlet 11 and the air outlet 12 are connected to the accommodating space S, and the accommodating space S may be surrounded by a ring wall 13, the accommodating space S The installation space S can be provided with a fan wheel 14, which can drive the airflow, so that the airflow enters from the air inlet 11 and flows to the air outlet 12. The fan wheel 14 is matched with the frame body 1. In this embodiment, the fan wheel 14 is a fan-type fan wheel and is rotatably disposed on the frame body 1. Furthermore, the frame body 1 A cover plate 15 is also provided. The fan wheel 14 is disposed on the lower surface of the cover plate 15. The cover plate 15 can be combined with the air inlet 11 so that the fan wheel 14 can be received in the accommodating space of the frame body 1. S drives the airflow and causes the airflow to flow from the air inlet 11 to the air outlet 12. In order to make the frame body 1 have a better air intake, the air inlet 11 of the frame body 1 may further have an external expansion portion 17 that expands radially away from the receiving space S.

The air duct 2 is hollow and has an airflow passage 21 having an air inlet end 211 and an air outlet end 212. The cross-sectional area of the air outlet end 212 is preferably larger than that of the air inlet end 211. Sectional area. The air inlet end 211 can be connected to the air outlet 12 of the frame body 1. In this embodiment, the air outlet 12 of the frame body 1 is provided with two side plates 16, each of which is provided with a side groove 161. The air inlet end 211 of the air duct 2 has two end portions 22, and the two end portions 22 can be fitted into the two side grooves 161, so that the air duct 2 is connected to the frame body 1, and the air duct is The air inlet end 211 of the tube 2 is connected to the air outlet 12 of the frame body 1. In addition, In order to make the joined air inlet end 211 and the air outlet 12 have a better airtight effect, the air inlet end 211 of the air duct 2 may further have a bottom end portion 23 and a top end portion 24, and form the The frame body 1 of the air outlet 12 is provided with a corresponding abutting portion 162. The abutting portion 162 may be formed by using a height difference as shown in the figure, and a corresponding one is provided on the lower surface of the cover plate 15. The recessed groove 151, the bottom end portion 23 may be abutted against the abutment portion 162, and the top end portion 24 may be fitted into the recessed groove 151.

The non-return member 3 is movably disposed in the airflow channel 21, and the non-return member 3 can be pivoted to close or open the airflow channel 21. Preferably, the non-return member 3 has two fulcrum points 31, and the non-return member The piece 3 is movably pivotally connected to the airflow channel 21 by the two fulcrum points 31. The two fulcrum points 31 are preferably formed coaxially. In particular, the two fulcrum points 31 may be formed at two ends of a pivot shaft. The check piece 3 forms a link L between the axes of the two fulcrum points, an upper half 3a is formed above the link L, a lower half 3b is formed below the link, and the upper half 3a is formed The upper edge from the upper edge to the line L has an upper half length La, and the lower edge from the lower half 3b to the line L has a lower half length Lb, which is longer than the upper half La . The inner wall of the airflow passage 21 may further be provided with two pivot joints 25, and the two pivot joints 25 are preferably arranged correspondingly, so that the two fulcrum points 31 of the check member 3 can be movably pivoted to the two pivots.接 部 25。 Then 25.

The supercharging member 4 can block a part of the area of the air outlet 12 or the airflow passage 21. The supercharging member 4 has a top edge 41 and a bottom edge 42. The bottom edge 42 is opposite to the top edge 41. Close to the bottom end portion 23 of the air duct 2, the bottom edge 42 is located between the bottom end portion 23 and the two fulcrum points 31 of the check piece 3 in the axial direction of the frame body 1. The booster 4 is preferably An arc is formed by the top edge 41 toward the bottom edge 42 and toward the air outlet end 212. The supercharging member 4 can be fixed by the top edge 41. In this embodiment, the supercharging member 4 is formed by the top edge. 41 is connected to the top of the inner wall of the air inlet end 211 of the airflow channel 21, so that the pressure increasing member 4 is fixed at a predetermined position. Preferably, the pressure increasing member 4 is integrally formed in the air guide pipe 2.

Please refer to FIG. 3, which is the combination of the ventilation fan outflow guide structure of the present invention. Shape, the accommodating space S of the frame body 1 has a fan wheel 14 through which the airflow can be driven, so that the airflow can enter through the air inlet 11 and exit through the air outlet 12, and the air guide The pipe 2 is coupled to the air outlet 12, and the air inlet end 211 of the airflow channel 21 is connected to the air outlet 12, so that the airflow can be discharged through the airflow channel 21 and from the air outlet 212, and the airflow channel 21 is The supercharging member 4 is provided. The bottom edge 42 of the supercharging member 4 extends toward the bottom end portion 23 of the air duct 2, and the bottom edge 42 of the supercharging member 4 forms an arc shape toward the air outlet end 212. It is provided that when the fan wheel 14 is not rotated, the non-return member 3 forms a non-raised blocking air outlet end 212 of the air guide pipe 2, and forms a protective function to prevent foreign air entrained by foreign air from entering the ventilation fan.

As shown in FIG. 4, when the fan wheel 14 rotates, the fan wheel 14 can introduce a large amount of airflow from the air inlet 11 and drive the air toward the air outlet 12 and the air outlet 212 of the air duct 2. The airflow forces the non-return member 3 to pivot counterclockwise as shown, so that the airflow can be discharged from the air outlet 212.

According to the above, since the present invention has the pressurizing member 4, and the bottom edge 42 of the pressurizing member 4 is located in the axial direction of the frame body 1 at the bottom end portion 23 and the two fulcrum points 31 of the check piece 3 Therefore, the airflow flowing through the airflow passage 21 can achieve the supercharging effect of increasing the airflow velocity due to the arrangement of the supercharging member 4. In this way, the airflow can also easily pass through the check member 3 without Affected by the non-return member 3, the air flow has the effect of preventing turbulent flow and turbulence when passing through the non-return member 3, and in particular, when the pressure member 4 moves from the top edge 41 to the bottom edge When 42 and the arc-shaped end 212 are formed in an arc shape, the effect of increasing the velocity of the airflow, increasing the pressure, and preventing turbulence and turbulence can be more significant.

Please refer to FIG. 5, which is another embodiment of the ventilation guide structure of the ventilating fan of the present invention. Compared with the first embodiment, the supercharging member 4 is connected to the cover plate 15 by the top edge 41. The lower surface of the supercharging member 4 is fixed at a predetermined position. Preferably, the supercharging member 4 is integrally formed on the lower surface of the cover plate 15 and the bottom edge 42 of the supercharging member 4 is formed on the lower surface. The frame body 1 is located in the axial direction between the bottom end portion 23 and the two fulcrum points 31 of the above-mentioned check piece 3, and the pressurizing piece 4 The bottom edge 42 is formed in an arc shape toward the air outlet end 212. Therefore, when the fan wheel 14 rotates, the airflow can drive toward the air outlet 12 and the air outlet 212 of the air duct 2, and when the airflow passes through the supercharging member 4, the airflow velocity can be increased. Supercharging effect, and the effect of avoiding turbulence and turbulence.

In summary, the ventilating fan air guiding structure of the present invention is provided with a pressurizing member in the air flow channel, and the bottom edge of the pressurizing member is located at the bottom end portion of the frame body in the axial direction and the above-mentioned check stop. Between the two fulcrum points of the piece, therefore, when the airflow flowing through the airflow channel can be increased by the increase of the airflow velocity due to the arrangement of the pressure-increasing member, the airflow can also easily pass through the check piece. , Has the effect of avoiding turbulence and turbulence.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (15)

A ventilating fan guide structure includes: a frame body, the frame body has a containing space, an air inlet and an air outlet are connected to the containing space, and a fan wheel is arranged in the containing space; The air duct has one airflow channel, the air inlet end of which is connected to the air outlet, and the airflow channel has another air outlet end; a non-return piece, which is movably pivoted to the air flow passage, and the non-return piece can pivot Closing or opening the airflow channel; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, wherein the non-return member has two fulcrum points, the The bottom edge of the pressure member is relatively closer to a bottom end portion of the air duct than the top edge, and the bottom edge is located on the line connecting the bottom end portion and the two fulcrum points of the check piece in the axial direction of the frame body. between. As described in item 1 of the scope of the patent application, the ventilating fan outflow guide structure, wherein the check piece has two fulcrum points, a connection line is formed between the centers of the two fulcrum points, and the check piece is formed above the connection line. An upper half has an upper half length, and the check piece forms a lower half below the line and has a lower half length, and the lower half length is greater than the upper half length. As described in item 1 of the scope of the patent application, the ventilating fan outflow guide structure, wherein the inner wall of the airflow channel has two opposite pivot joints, the check piece has two pivot points, and the two pivot points are movably pivoted. To the two pivot joints. As described in item 1 of the scope of the patent application, the ventilating fan air-guiding structure, wherein the supercharging member forms an arc from the top edge to the bottom edge and toward the air outlet end. As described in item 1 of the scope of the patent application, the ventilating fan air-guiding structure, wherein the supercharging member is connected by the top edge to the top of the inner wall of the air-inlet end of the air duct. As described in item 5 of the scope of patent application, the ventilation fan outlet air guide structure, wherein the supercharging member is integrally formed with the air guide pipe. According to any one of claims 1 to 6, the ventilating fan outlet air guide structure, wherein the frame body has a cover plate, and the fan wheel is rotatably coupled to the lower surface of the cover plate. A ventilating fan guide structure includes: a frame body, the frame body has a containing space, an air inlet and an air outlet are connected to the containing space, and a fan wheel is arranged in the containing space; The air duct has one airflow channel, the air inlet end of which is connected to the air outlet, and the airflow channel has another air outlet end; a non-return piece, which is movably pivoted to the air flow passage, and the non-return piece can pivot Closing or opening the airflow channel; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, wherein the frame body has a cover plate, the The supercharging member is connected to the lower surface of the cover plate by a top edge. As described in item 8 of the scope of the patent application, the ventilating fan outflow guide structure, wherein the supercharging member is integrally formed with the cover plate. The ventilating fan guide structure according to item 8 or 9 of the scope of the patent application, wherein the fan wheel is rotatably coupled to the lower surface of the cover plate. According to any one of claims 1 to 6, 8, and 9 of the scope of application for a patent, the airflow guide structure of the ventilating fan, wherein the air duct is located at the air inlet end has a bottom end portion, and the frame body The air outlet has two side plates and an abutting portion, and the bottom end portion abuts the abutting portion. As described in any one of claims 1 to 6, 8, and 9 of the scope of the patent application, the ventilation fan outlet air guide structure, wherein the air inlet of the frame body has an outer expansion portion, and the outer expansion portion is directed away from the container. Set the space direction to expand radially. As described in item 10 of the scope of patent application, the ventilation fan outlet air guide structure, wherein the air guide pipe is located at the air inlet end has a top end portion, and the lower surface of the cover plate has a caulking groove, the top end portion Fit into the recessed groove. A ventilating fan guide structure includes: a frame body, the frame body has a containing space, an air inlet and an air outlet are connected to the containing space, and a fan wheel is arranged in the containing space; The air duct has one airflow channel, the air inlet end of which is connected to the air outlet, and the airflow channel has another air outlet end; a non-return piece, which is movably pivoted to the air flow passage, and the non-return piece can pivot Closing or opening the airflow channel; and a pressure-increasing member having a top edge and a bottom edge, the pressure-increasing member blocking a part of the area of the air outlet or the airflow channel, wherein the air duct is located at the air inlet end Where there are two side ends, the air outlet of the frame body has two side plates, each of the two side plates has one side groove, and the two side ends are respectively fitted into the two side grooves. A ventilating fan guide structure includes: a frame body, the frame body has a containing space, an air inlet and an air outlet are connected to the containing space, and a fan wheel is arranged in the containing space; The air duct has one airflow channel, the air inlet end of which is connected to the air outlet, and the airflow channel has another air outlet end; a non-return piece, which is movably pivoted to the air flow passage, and the non-return piece can pivot Closing or opening the airflow channel; and a pressurizing member having a top edge and a bottom edge, the pressurizing member blocking a part of the area of the air outlet or the airflow channel, wherein the frame body has a cover plate, the The fan wheel is rotatably coupled to the lower surface of the cover plate. The air duct is located at the air inlet end and has a top end portion. The lower surface of the cover plate has an insert groove, and the top end portion is fitted into the cover portion. Recessed.