TWI605197B - Ventilator - Google Patents

Description

Ventilation fan

The invention relates to a ventilation fan, in particular to a ventilation fan provided with an exhaust hood.

Referring to FIG. 1 , a conventional ventilating fan 9 includes a housing 91 and an exhaust hood 92. The housing 91 can be coupled to a spacer (for example, a ceiling), and the housing 91 is internally provided. There is a fan 911. Thereby, the fan 911 can be introduced into the airflow by the airflow port 912 of the housing 91, so that the ventilation fan 9 can provide the ventilation and ventilation function. The housing 91 is provided with a through hole 913. The exhaust hood 92 is provided with a spring leg 921 which can be fixed to the through hole 913 of the housing 91. Thereby, the exhaust hood 92 is detachably coupled to the housing 91 to shield the airflow opening 912 of the housing 91, thereby maintaining the appearance integrity of the ventilating fan 9, and the hood 92 is also available. Other components such as lamps, power modules, or strainers.

However, the provision of the spring leg 921 will result in a complicated structure of the ventilating fan 9, and the spring leg 921 is prone to rusting as the use time of the ventilating fan 9 increases, which makes the venting hood 92 difficult to assemble and disassemble, and may be shortened. The service life of the ventilating fan 9.

For this reason, in some of the existing ventilating fans 9, the housing 91 and the hood 92 can be coupled to the spring foot 921 by a snap fit, however, when the housing 91 is coupled to a spacer, the hood is The spacer 92 is adjacent to the spacer 91, so that the hood 92 lacks a point of application for the user to apply force to the hood 92, so that the hood 92 is difficult to be removed from the housing 91. According to this, even if the hood 922 is not provided with the spring leg 921, the ventilating fan 9 has a problem that the detachability is not good.

In view of this, it is necessary to provide a further improved ventilating fan to improve the ease of disassembly and assembly of the exhaust hood of the ventilating fan.

An object of the present invention is to provide a ventilating fan that includes a housing and an exhaust hood that is snap-fitted to the housing.

Another object of the present invention is to provide a ventilating fan, wherein the hood is provided with a grip for the user to apply force, so that the hood is easily removed from the housing.

In order to achieve the foregoing object, the technical method of the present invention includes: a ventilating fan, comprising: a housing, the housing forming an accommodating space for accommodating a wheel, the housing is provided with a frame An air inlet is formed in the center of the frame, the air inlet communicates with the accommodating space, and the frame body is provided with a first fastening portion; and a row of air hoods, the air hood includes a flow guiding portion and a circumferential portion The air guiding portion covers the air inlet, the ring portion includes a bottom plate and a side wall, the bottom plate is disposed on the outer circumference of the flow guiding portion, the side wall is disposed on the bottom plate, and the side wall is disposed along the axial direction The bottom plate extends toward the housing. The second peripheral portion is provided with a second fastening portion and a holding portion. The second fastening portion is coupled to the first fastening portion. The holding portion is disposed on the side wall. The holding portion includes a force receiving surface and an opening, the force receiving surface is adjacent to the opening, and the force receiving surface faces the housing in the axial direction of the fan wheel, and the outer circumference of the side wall is provided with a reduced diameter portion, the reduced diameter portion The opening of the grip portion is oriented in a direction perpendicular to the axial direction of the fan wheel.

The ventilating fan as described above, wherein the portion of the circumferential portion between the force receiving surface and the flow guiding portion has a first projection range in the axial direction of the fan wheel, and the reduced diameter portion is on the axis of the fan wheel Upward has a second projection range, the first projection range encompassing the second projection range. Thereby, the portion of the circumferential portion between the force receiving surface and the flow guiding portion can shield the grip portion and the reduced diameter portion in the axial direction, and can hide the grip portion to maintain the appearance of the ventilating fan. The efficacy of integrity.

a ventilating fan as described above, wherein a direction perpendicular to an axial direction of the fan wheel The reduced diameter portion and the second fastening portion are respectively disposed on opposite sides of the side wall of the circumferential portion. Thereby, the opening of the grip portion is formed at a position opposite to the second fastening portion, so that the force receiving surface is also adjacent to the second fastening portion, so the user only needs to apply the force surface The small force can make the second fastening portion disengage from the first fastening portion, and has the effect of further improving the disassembly and assembly convenience of the air hood.

The ventilating fan as described above, wherein the reduced diameter portion has a rectangular shape, a curved shape or a wedge shape along a cross section of the axial direction of the fan wheel. Thereby, the shape of the reduced diameter portion can be designed according to actual needs to form a shape that is easy for the user to push or apply with the tool by hand or in a force, so that the grip portion is easy for the user to apply force.

A ventilating fan according to another embodiment of the present invention, wherein the circumferential portion includes a bottom plate and a side wall, the bottom plate is disposed on an outer circumference of the flow guiding portion, the side wall is disposed on the bottom plate, and the side wall is along the axial direction The bottom plate extends toward the housing, and the grip portion is disposed on the bottom plate.

The ventilating fan as described above, wherein the opening penetrates both sides of the bottom plate of the circumferential portion in a direction perpendicular to the axial direction of the fan wheel. Therefore, the ventilating fan of the other embodiment does not need to provide the reduced diameter portion, and the force receiving surface and the opening of the grip portion can still be formed.

In the ventilating fan of each embodiment of the present invention, the height of the opening in the axial direction of the fan wheel is 7 mm to 15 mm. Thereby, it is ensured that the opening is sufficient for the finger or the tool to protrude, while avoiding the height of the opening being too high to affect the appearance integrity of the ventilating fan.

The flow guiding portion is provided with a plurality of air flow ports, and the air flow ports respectively penetrate the two sides of the flow guiding portion along the axial direction, so that the airflow can pass through the exhaust hood.

With the above structure, the ventilating fan of each embodiment of the present invention is provided with a grip portion at a circumferential portion of the hood, and the opening of the grip portion can be inserted by a user by hand or with a tool and resists the force. The surface is further provided for the user to apply force to make the hood easily removed from the housing, thereby improving the ease of assembly and disassembly of the hood.

〔this invention〕

1‧‧‧Shell

11‧‧‧fan wheel

12‧‧‧ frame

121‧‧‧Air inlet

122‧‧‧First fastening

2‧‧‧Exhaust hood

21‧‧‧Drainage Department

211‧‧‧ airflow port

22‧‧‧Circle

22a‧‧‧floor

22b‧‧‧Side wall

221‧‧‧Second fastening

222‧‧‧ grip

222a‧‧‧ force surface

222b‧‧‧ openings

223‧‧‧Reducing section

R‧‧‧ accommodating space

X‧‧‧ axial

D‧‧‧Isolation

R1‧‧‧first projection range

R2‧‧‧second projection range

H‧‧‧ Height

[study]

9‧‧‧Ventilator

91‧‧‧Shell

911‧‧‧fan

912‧‧‧ airflow

913‧‧‧Perforation

92‧‧‧Exhaust hood

921‧‧‧Spring feet

Figure 1: An exploded view of a conventional ventilating fan.

Fig. 2 is a schematic exploded view showing the structure of the first embodiment of the present invention.

Figure 3 is a partial exploded view of the first embodiment of the present invention

Fig. 4 is a cross-sectional view showing the structure of the first embodiment of the present invention.

Fig. 5 is a cross-sectional view showing a partial structure of a first embodiment of the present invention.

Fig. 6a is a cross-sectional view showing the cross section of the reduced diameter portion of the embodiment of the present invention in an arc shape.

Fig. 6b is a cross-sectional view showing the cross section of the reduced diameter portion of the embodiment of the present invention in a wedge shape.

Figure 7 is a cross-sectional view showing the structure of a second embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

2 to 5, wherein FIG. 2 is a schematic exploded view of the ventilating fan of the first embodiment of the present invention; FIG. 3 is a partial exploded view of the ventilating fan of the first embodiment; A schematic cross-sectional view of the ventilating fan of the first embodiment; Fig. 5 is a schematic cross-sectional view showing a partial structure of the ventilating fan of the first embodiment. The ventilating fan of the first embodiment comprises a housing 1 and an exhaust hood 2, and the hood 2 is coupled to the housing 1.

An accommodating space R is formed in the housing 1 for accommodating a fan wheel 11 . The housing 1 is provided with a frame 12 , and the frame 12 is disposed on the housing 1 in the axial direction X of the fan wheel 11 . An air inlet 121 is formed in the center of the frame 12, and the air inlet 121 communicates with the receiving space R. The frame 12 is provided with a first fastening portion 122.

The exhaust hood 2 includes a flow guiding portion 21 and a circumferential portion 22 . The air guiding portion 21 shields the air inlet 121 of the frame body 12, and the air guiding portion 21 can be provided with a plurality of air flow ports 211. The air flow ports 211 extend through the two sides of the air guiding portion 21 along the axial direction X to make the air flow. The hood 2 can be passed through. The circumferential portion 22 includes a bottom plate 22a and a side wall 22b, and the bottom plate 22a is disposed on the guide The outer wall of the flow portion 21 is disposed on the bottom plate 22a, and the side wall 22b extends from the bottom plate 22a toward the housing 1 along the axial direction X. The ring portion 22 is provided with a second fastening portion 221 and a grip portion 222 . In this embodiment, the second fastening portion 221 and the grip portion 222 may be disposed on the side wall 22 b of the circumferential portion 22 . The second fastening portion 221 is coupled to the first fastening portion 122 of the frame 12 to enable the hood 2 to be detachably coupled to the housing 1 . However, the second fastening portion 221 can also be disposed on the bottom plate 22a of the circumferential portion 22, and the invention is not limited thereto. The holding portion 222 includes a force receiving surface 222a and an opening 222b. The opening 222b is located outside the side wall 22b. The force receiving surface 222a is adjacent to the opening 222b, and the force receiving surface 222a is in the axial direction of the fan wheel 11. The X faces the housing 1.

As shown in FIGS. 4 and 5, in the present embodiment, a reduced diameter portion 223 is provided on the outer circumference of the side wall 22b of the circumferential portion 22, and the reduced diameter portion 223 is perpendicular to the axial direction X of the fan wheel 11. The upper end faces the opening 222b of the grip portion 222. Further, in the direction perpendicular to the axial direction X of the fan wheel 11, the outer diameter of the reduced diameter portion 223 is smaller than the outer diameter of the portion of the side wall 22b having the force receiving surface 222a. The side wall 22b is provided with the reduced diameter portion 223, and the opening 222b can be formed between the reduced diameter portion 223 and the force receiving surface 222a of the grip portion 222.

With the above structure, please refer to FIGS. 2 and 3, when the ventilation fan of the first embodiment of the present invention is actually used, it can be mounted on a spacer D, which can be a ceiling, a wall or a system machine. Shell and so on. The housing 1 can be coupled to the spacer D via the frame 12. In detail, the frame 12 can be coupled to the spacer D toward the surface of the hood 2 . The hood 2 can be snap-fitted to the first fastening portion 122 of the housing 1 via the second fastening portion 221 . When the fan wheel 11 is in operation, the airflow port 211 of the air hood 2 and the air inlet 121 of the casing 1 can be introduced into the accommodating space R, and the air in the accommodating space R can be discharged. The ventilating fan of an embodiment can provide an air flow exchange function.

Since the surrounding portion 22 of the hood 2 is provided with the holding portion 222, when the user wants to disassemble the hood 2, the opening 222b of the holding portion 222 can be inserted by hand or with a tool and And pressing the force receiving surface 222a, the force receiving surface 222a is biased along the axial direction X to press the exhaust hood 2 away from the housing 1, and the second fastening is further performed. The portion 221 is separated from the first fastening portion 122. Accordingly, the grip portion 222 can be biased by the user to facilitate the removal of the hood 2 from the housing 1 and has the effect of improving the ease of assembly and disassembly of the hood 2 .

According to the foregoing structure, the characteristics of the air flow switching device of each embodiment of the present invention are enumerated in detail below and explained one by one:

Referring to FIG. 4, in the present embodiment, the side wall 22b of the circumferential portion 22 is provided with the reduced diameter portion 223, and the circumferential portion 22 is located at the force receiving surface 222a and the flow guiding portion 21. The portion between the portion has a first projection range R1 in the axial direction X of the fan wheel 11, and the reduced diameter portion 223 has a second projection range R2 in the axial direction X of the fan wheel 11, the first projection range. R1 covers the second projection range R2. Thereby, the portion of the circumferential portion 22 between the force receiving surface 222a and the flow guiding portion 21 can shield the grip portion 222 and the reduced diameter portion 223 in the axial direction X. In other words, when the user views the ventilating fan of the first embodiment in the axial direction X, the side wall 22b of the circumferential portion 22 is not aware of the grip portion 222. Accordingly, the ventilating fan of the first embodiment can form the retaining portion 222 by providing the reduced diameter portion 223, and can hide the grip portion 222 to achieve the effect of maintaining the appearance integrity of the ventilating fan.

Referring to FIG. 5, in the embodiment, the reduced diameter portion 223 and the second fastening portion 221 are respectively disposed in the circumferential portion of the fan wheel 11 in a direction perpendicular to the axial direction X of the fan wheel 11. The opposite sides of the side wall 22b of 22. Therefore, the opening 222b of the grip portion 222 is formed at a position opposite to the second fastening portion 221, so that the force receiving surface 222a is also adjacent to the second fastening portion 221, so the user only has to The force surface 222a exerts a small force to generate sufficient stress on the second fastening portion 221 to be disengaged from the first fastening portion 122, thereby further improving the ease of assembly and disassembly of the exhaust hood 2. efficacy.

In this embodiment, the reduced diameter portion 223 has a rectangular shape along the axial direction of the fan wheel 11, but please refer to FIG. 6a. In some embodiments of the present invention, the reduced diameter portion 223 is along The axial cross section of the fan wheel 11 may be curved, so that the opening 222b of the grip portion 222 is easily inserted by the user to force the force receiving surface 222a; or, as shown in FIG. 6b In some embodiments of the present invention, the reduced diameter portion 223 may have a wedge shape along the axial direction of the fan wheel 11, so that the user can easily apply force to the force receiving surface 222a when the tool extends into the opening 222b. Accordingly, the shape of the reduced diameter portion 223 can be designed according to actual needs, so that the grip portion 222 is easy for the user to apply force.

Referring to FIG. 7, the ventilating fan according to the second embodiment of the present invention is different from the first embodiment in that the grip portion 222 can be disposed on the bottom plate 22a of the circumferential portion 22. In detail, the opening 222b of the grip portion 222 penetrates the two sides of the bottom plate 22a in a direction perpendicular to the axial direction X of the fan wheel 11, and the bottom plate 22a is located between the flow guiding portion 21 and the opening 222b and faces the same The surface of the housing 1 can form the force receiving surface 222a. According to the second embodiment, the ventilating fan of the second embodiment can be disposed on the bottom plate 22a, and the force reducing surface 222a and the opening 222b of the holding portion 222 can be formed without the need to provide the reduced diameter portion 223. The grip portion 222 can also be biased by the user to make the hood 2 easy to be removed from the housing 1 , and has the same function of improving the ease of assembly and disassembly of the hood 2 .

Referring to Figures 5 and 7, in the embodiments of the present invention, the height H of the opening 222b in the axial direction X of the fan wheel 11 is preferably 7 mm to 15 mm, so that the opening 222b is sufficient for a finger or a tool. Extending into, while avoiding the height H of the opening 222b being too high, affecting the appearance integrity of the ventilating fan.

In summary, the ventilating cover 92 is biased by the user according to the prior ventilating fan 9 so that the hood 92 is difficult to be removed from the housing 91; The ventilating fan is provided with a grip portion 222 at the circumferential portion 22 of the hood 2, and the opening 222b of the grip portion 222 is accessible to the user by hand or by a tool and presses the force receiving surface 222a for use. The force is applied to make the hood 2 easy to be removed from the housing 1, and it has the effect of improving the ease of assembly and disassembly of the hood 2.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Shell

11‧‧‧fan wheel

12‧‧‧ frame

121‧‧‧Air inlet

122‧‧‧First fastening

2‧‧‧Exhaust hood

21‧‧‧Drainage Department

211‧‧‧ airflow port

22‧‧‧Circle

22a‧‧‧floor

22b‧‧‧Side wall

222‧‧‧ grip

223‧‧‧Reducing section

R‧‧‧ accommodating space

X‧‧‧ axial

Claims (8)

A ventilating fan includes: a housing having an accommodating space for receiving a wheel, the housing is provided with a frame, and an air inlet is formed in the center of the frame, and the air inlet is connected to the air inlet a space is provided, and the frame body is provided with a first fastening portion; and a row of air hoods, the air hood includes a flow guiding portion and a ring portion, the guiding portion shields the air inlet, and the ring portion includes a a bottom plate and a side wall, the bottom plate is disposed on the outer circumference of the flow guiding portion, the side wall is disposed on the bottom plate, and the side wall extends from the bottom plate toward the housing along the axial direction, and the second portion of the ring portion is provided with a second buckle a second fastening portion is coupled to the first fastening portion, the holding portion is disposed on the side wall, and the holding portion includes a force receiving surface and an opening, the force receiving surface is adjacent to the first fastening portion The opening, and the force receiving surface faces the housing in the axial direction of the fan wheel, and the outer wall of the side wall is provided with a reduced diameter portion facing the holding in a direction perpendicular to the axial direction of the fan wheel The opening of the department. The ventilating fan according to the first aspect of the invention, wherein the portion of the circumferential portion between the force receiving surface and the flow guiding portion has a first projection range in the axial direction of the fan wheel, the reduced diameter portion There is a second projection range in the axial direction of the fan wheel, and the first projection range covers the second projection range. The ventilating fan according to the first aspect of the invention, wherein, in a direction perpendicular to an axial direction of the fan wheel, the reduced diameter portion and the second fastening portion are respectively disposed on a side wall of the circumferential portion On both sides. The ventilating fan according to claim 1, wherein the reduced diameter portion has a rectangular, arcuate or wedge shape along a cross section of the fan wheel. The ventilating fan of claim 1, wherein the peripheral portion of the ring includes a bottom plate and a side wall, the bottom plate is disposed on an outer circumference of the flow guiding portion, the side wall is disposed on the bottom plate, and the side wall is along the side wall The axial direction extends from the bottom plate toward the housing, and the grip portion is disposed on the bottom plate. The ventilating fan according to claim 5, wherein the opening penetrates both sides of the bottom plate of the circumferential portion in a direction perpendicular to the axial direction of the fan wheel. The ventilating fan according to claim 1, 2, 3, 4, 5 or 6, wherein the opening has a height of 7 mm to 15 mm in the axial direction of the fan wheel. The ventilating fan of claim 1, wherein the flow guiding portion is provided with a plurality of air flow openings, and each of the air flow openings extends through the two sides of the flow guiding portion along the axial direction.