TWI525257B - Ceiling fan - Google Patents

Description

Ceiling fan

The present invention relates to a fan, and more particularly to a ceiling fan provided with a drafting ring for smoothly guiding the airflow.

On the ceiling of the interior decoration, the light steel frame is often used to form a grid and a panel or a lighting fixture is placed in the sash, for example, in the ceiling structure of the office. In order to achieve the flow of indoor air, a fan structure is also provided in the sash of the light steel frame.

Please refer to FIG. 1 , which is a cross-sectional view of a conventional fan structure for a light steel frame. In the figure, the fan structure 1 includes a fan base 11, a motor 12, a blade 13, a lower frame 14, and an exhaust disk 19. The fan base 11 has a closed top portion which is disposed downwardly for the motor 12, and the blade 13 is disposed on the rotating shaft of the motor 12 and is rotatable by the motor 12. The lower frame 14 An outer flange 15 is assembled in the sash of the light steel frame, and an arcuate bottom surface is formed downwardly from the outer flange 15. The lower frame 14 is assembled with the fan base 11 and has an arc shape. A circular hole 16 is formed in the center of the bottom surface, so that the blade 13 is located above the circular hole 16 , and a plurality of air inlet holes 17 are defined around the circular hole 16 , and a blade frame 18 is disposed above the circular hole 16 of the curved bottom surface. The periphery of the blade 13 surrounds the exhaust disk 19 and is assembled in the circular hole 16 for gas discharge.

Please refer to FIG. 2 , which is a fan structure dedicated to a light steel frame of the prior art, which includes a fan base 41 , a turntable motor 42 fixed to the fan base body, and a turntable motor 42 . Driven by An exhaust disk 43 for rotating relative to the fan base 41 and a blade motor 44 fixed to the fan base 41 are driven by the blade motor 44 to be rotatable on the fan base 41. The fan blade 41 has a circular hole 45 formed at a central portion thereof, and a circular passage 46 is formed in the outer periphery of the circular hole 41. The fan base 41 forms a plurality of shapes between the cyclone passage 46 and the outer periphery. Air intake hole 47.

However, in the above fan design, the intake air is not effectively guided, so the intake air is not smooth, and it is easy to accommodate unnecessary turbulence in the accommodation room, and the position of the air inlet and the air outlet is too close, so that A part of the airflow blown out by the air outlet is sucked in from the air inlet, resulting in a decrease in air volume and loss of power.

The object of the present invention is to provide a ceiling fan which has a diversion design, which can reduce unnecessary turbulence, and can prevent the blown air stream from being sucked back, and the air volume is reduced.

The ceiling fan according to the present invention includes: a housing including a first housing portion and a second housing portion disposed on a front side of the first housing portion; a motor having a rotor and a stator; and an impeller fixedly coupled to the The rotor of the motor. The motor is held by the housing, and the second housing portion is disposed on a front side of the first housing portion and is provided with an annular guide ring substantially surrounding the impeller. The annular air guiding ring has a front end and a rear end. In a cross section taken along a radial direction of the annular conducting coil, the rear end of the annular conducting ring has a U shape, a V shape, a semicircular shape or an arc shape. The outer contour of the shape. By providing the annular flow guiding ring, the airflow can be smoothly guided to reduce unnecessary turbulence, and the distance between the air inlet and the air outlet can be extended, and the air intake and the air outlet can be reduced. Interference, avoiding the gas blown out by the air outlet to be sucked in from the air inlet, reducing the air volume, thereby reducing noise, improving efficiency, and saving energy.

According to another aspect of the invention, the rotor of the motor mated with the impeller may be an inner rotor or an outer rotor. In the case of the inner rotor, the rotor can be fixed to the rotating shaft and fixed to the rotating shaft with the impeller so that the impeller is effectively fixedly coupled to the rotor. In the case of an outer rotor, the impeller is directly fixed to the outer rotor.

According to another aspect of the present invention, at least one light source may be disposed at a front end of the annular air guiding ring; or the annular air guiding ring may be provided with a recess or a groove opening at the front end, and at least a recess or a groove may be provided in the concave portion or the groove A light source. The light source can be a semiconductor light emitting element such as a light emitting diode.

According to another aspect of the present invention, the housing has a front main surface, a rear main surface opposite to the front main surface, and a circumferential surface connecting the front main surface and the rear main surface, and the air outlet of the ceiling fan is disposed on the front main surface And the air inlet of the ceiling fan is arranged on the circumference.

According to another aspect of the present invention, the air inlet of the ceiling fan is disposed on the outer periphery of the air outlet at the front main surface. Preferably, the air outlet is disposed at a position forward of the air inlet in the front-rear direction to extend the distance between the air inlet and the air outlet, and to reduce the possibility that a part of the airflow blown by the air outlet is sucked from the air inlet.

In addition, a rectifying grille, a diversion grille, a steering grille, a spiral grille or a protective grille are further disposed in the vicinity of the air outlet of the casing to change the property of the airflow blown by the air outlet or prevent the impeller from being directly exposed to the outside. . The grille is preferably removably provided for disassembly, repair and cleaning. A grill drive mechanism can be provided if necessary.

Please refer to Figures 3, 4, 5 and 6 together. Figure 3 is a perspective assembled view of the first embodiment of the ceiling fan of the present invention, and Figure 4 is a perspective exploded view of the first embodiment of the ceiling fan of the present invention. Figure 5 is a side cross-sectional view showing a first embodiment of the ceiling fan of the present invention, and Figure 6 is a flow chart showing the first embodiment of the ceiling fan of the present invention. The ceiling fan according to the first embodiment of the present invention is generally indicated by the symbol 2 of the element. The ceiling fan 2 mainly includes a housing 21, a motor 22, and an impeller 23.

As shown, the housing 21 includes a first housing portion 211 and a second housing portion 212 disposed on a front side of the first housing portion 211. The housing 21 has a main surface 213 before the second housing portion 212, a main surface 214 opposite to the front main surface 213 and a rear side of the first housing portion 211, and a front main surface 213 and a rear main surface 214. The circumference of the 215. Before the ceiling fan 2, the main surface 213 includes an air outlet 217, and a plurality of air inlets 216 are disposed on the circumferential surface 215 of the ceiling fan 2. Further, a steering grill 25 and a detachable cover plate 251 that cooperates with the grille 25 are further disposed in the vicinity of the air outlet 217 of the casing 21. The cover plate 251 is integrally formed with a cross-shaped bracket of the carrier grill drive mechanism 24, and the steering grill 25 is rotated by the grill drive mechanism 24 for changing the airflow blown by the air outlet 217. In the direction, as the steering grill 25 rotates, the direction in which the airflow is blown also changes. It should be understood that although the cover plate 251 is integrally formed with the cross-shaped bracket of the carrier grid drive mechanism 24 in this example, the cover plate and the cross-shaped bracket may be configured to be separable from each other.

Instead of a steering grid, a diversion grid, a rectifying grid, a spiral grid or a protective grid can also be used. If there is no need to rotate the set grid, the grid drive mechanism can be omitted.

The first housing portion 211 is provided with a motor 22, and the motor 22 has a rotor and a stator (not shown). In this example, the rotor is an inner rotor and is fixed to the rotating shaft 221. An impeller 23 having a plurality of blades 231 is also fixed to the rotating shaft 221 so that the impeller 23 is effectively fixed to the rotor. Although in the illustrated embodiment, the motor is fixedly mounted to the first housing portion, the invention is not limited thereto, as long as the motor can be stably held by the housing, the motor can also be fixedly mounted to the second housing or The first housing portion and the second housing portion are held together. Preferably, the impeller is removably secured to the spindle for unloading the impeller based on, for example, maintenance, repair or cleaning purposes.

In another embodiment, the rotor of the motor can also be an outer rotor. In this case, the impeller can be fixed directly to the outer rotor.

The present system of the motor 22 is fixedly mounted at the center of the first housing portion 211. The second housing portion 212 is provided with an annular flow guide 2121 that substantially surrounds the impeller 23. In the section taken along the radial direction of the annular guide ring (as shown in Fig. 5), the rear end 2123 of the annular guide ring 2121 has an outer contour that exhibits a substantially U shape. By the smooth outer contour of the rear end of the annular guide ring, the incoming airflow can be smoothly guided to reduce the occurrence of turbulence. The rear outer contour of the annular guide ring can also be made V-shaped, semi-circular or curved, and the like. In this example, although the annular flow guiding ring is formed in the second casing portion, the annular air guiding ring may be formed in the first casing portion as long as the annular air guiding ring is disposed to substantially surround the impeller. Or form a ring-shaped guide ring with independent components.

The annular guide ring 2121 is provided with a recess or groove opening in the front end 2122, in which more than one light-emitting element 2124 (for example, a light-emitting diode) is provided as a light source. The position of the light source is not limited to the annular flow In the recess or groove of the ring, the light source may also be disposed on the front main surface of the casing, the steering grille, the front end of the annular choke or the periphery of the front end of the annular choke.

The air inlet 216 of the ceiling fan 2 is disposed on the circumferential surface 215, and the ceiling fan 2 can suck air from the circumferential surface of the casing, and is provided by the annular guide ring 2121 provided in the second casing portion 212. Guide the air that is inhaled. Since the rear end 2123 of the annular choke 2121 has a substantially U-shaped outer contour in the radial section of the annular choke, the air sucked in from the air inlet 216 can be smoothly guided into the annular diversion. In the circle 2121, not only the turbulence can be reduced, but also the distance between the air inlet 216 and the air outlet 217 can be extended to reduce the mutual interference of the air during the air intake and the outflow, and the gas blown by the air outlet 217 can be prevented from the air inlet. 216 is inhaled to reduce air volume, thereby reducing noise, improving efficiency, and saving energy.

Please refer to FIGS. 7, 8, 9 and 10, FIG. 7 is a perspective assembled view of a second embodiment of the ceiling fan of the present invention, and FIG. 8 is a perspective exploded view of a second embodiment of the ceiling fan of the present invention. 9 is a side cross-sectional view showing a second embodiment of the ceiling fan of the present invention, and FIG. 10 is a schematic view showing a flow field of the second embodiment of the ceiling fan of the present invention. The ceiling fan according to the second embodiment of the present invention is generally indicated by the symbol 3 of the component. The ceiling fan 3 mainly includes a housing 31, a motor 32, and an impeller 33.

The maximum difference between the ceiling fan of the second embodiment and the ceiling fan of the first embodiment is that the air inlet and the air outlet of the ceiling fan of the second embodiment are both disposed on the front main surface of the casing. The ceiling fan of the first embodiment is particularly suitable for the case where the entire fan body cannot be embedded in the ceiling, and the ceiling fan of the second embodiment is particularly suitable for embedding the entire fan body into the ceiling. condition. Of course, the application of the ceiling fan is not necessarily limited to the above description, and the user can select a suitable ceiling fan type and a suitable installation method according to the requirements.

As shown, the housing 31 includes a first housing portion 311 and a second housing portion 312. The housing 31 has a main surface 313 on the second housing portion 312, a main surface 314 opposite to the front surface of the first housing portion 311, and a front main surface 313 and a rear main surface. The circumference 315 of 314. The front main surface 313 of the casing 31 is provided with an air outlet 317, and a plurality of air inlets 316 are provided around the air outlet 317. The air outlet 317 is disposed at a position slightly forward of the air inlet 316 in the front-rear direction. A cross-shaped bracket and a steering grill 35 carried by the cross-shaped bracket are further provided in a removably manner in the vicinity of the air outlet 317 of the casing 31. The steering grill 35 is rotated by the grill drive mechanism 34. Instead of the steering grid, a rectifying grid, a flow guiding grid, a spiral grid or a protective grid can also be used. If there is no need to rotate the set grid, the grid drive mechanism can be omitted.

The first housing portion 311 has a substantially square housing portion, and a motor 32 is provided at the center. The motor 32 has a rotor and a stator (not shown), and the rotor is an inner rotor and is fixed to the rotating shaft 321. An impeller 33 having a plurality of blades 331 is also fixed to the rotating shaft 321 so that the impeller 33 is effectively fixed to the rotor. Preferably, the impeller is removably secured to the spindle for unloading the impeller based on, for example, maintenance, repair or cleaning purposes.

In another embodiment, the rotor of the motor can also be an outer rotor. In this case, the impeller can be directly fixed to the outer rotor.

As shown in Fig. 9, the present system of the motor 32 is fixedly mounted at the center of the first casing portion 311. The second housing portion 312 is provided with an annular flow coil 3121 that substantially surrounds the impeller 32. Section taken in the radial direction along the annular guide ring (As shown in Fig. 9), the rear end 3123 of the annular guide ring 3121 has an outer contour that exhibits a substantially U shape. By the smooth outer contour of the rear end of the annular guide ring, the inhaled airflow can be smoothly guided to reduce the occurrence of turbulence. The rear outer contour of the annular guide ring can also be made V-shaped, semi-circular or curved, and the like.

The annular guide ring 3121 is provided with a recess or groove opening in the front end 3122, in which one or more light-emitting elements 3124 (for example, light-emitting diodes) are provided as a light source. The installation position of the light source is not limited to the concave portion or the groove of the annular flow guiding ring, and the light source may be disposed on the front main surface, the steering grating, the front end of the annular air guiding ring or the peripheral edge of the front end of the annular air guiding ring.

The air inlet 316 of the ceiling fan 3 is disposed on the outer periphery of the air outlet 317, so the ceiling fan 2 draws air from the periphery of the air outlet and is formed by the ring provided in the second casing portion 312. The draft ring 3121 guides the inhaled air. Since the rear end 3123 of the annular guide ring 3121 has a substantially U-shaped outer contour in the radial section, the air sucked from the air inlet 316 can be smoothly guided into the annular guide ring 3121 to reduce Unnecessary turbulence is generated.

Further, an annular peripheral partition 3125 surrounding the annular flow guide 3121 and coaxial with the annular flow guide 3121 may be disposed in the intake hole. The annular peripheral partition 3125 can effectively isolate the high-speed airflow in the intake air close to the annular guide ring 3121 from the low-speed airflow in the periphery, thereby reducing the occurrence of turbulence and increasing the smoothness of the intake air. Although only one annular peripheral partition is provided in this example, a plurality of annular guide coils having different diameters may be provided as appropriate.

Although based on the consideration of the flatness of the ceiling fan, the air inlet and the air outlet may be substantially coplanar, but based on avoiding intake and exhaust The interference consideration is advantageous in that the air outlet is disposed in a position forward of the air inlet in the front-rear direction. For example, the annular guide ring is protruded outward toward the front, so that the air outlet and the air inlet are on different planes to extend the distance between the air inlet and the air outlet.

As used herein, "front and rear direction" refers to the direction parallel to the motor shaft, "front side" refers to the side from which the airflow is blown, and "rear side" refers to the side opposite to the side from which the airflow is blown. In the case where the ceiling fan is mounted on the ceiling, the "front side" is the side facing the floor.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

1‧‧‧Fan structure

11‧‧‧Fan body

12‧‧‧ motor

13‧‧‧ fan leaves

14‧‧‧ Lower frame

15‧‧‧Outer flange

16‧‧‧ round hole

17‧‧‧Air intake

18‧‧‧Fan leaf frame

19‧‧‧Exhaust disk

2‧‧‧Ceiling fan

21‧‧‧ housing

211‧‧‧First housing part

212‧‧‧Second housing part

2121‧‧‧Circular Diversion Ring

2122‧‧‧ front end

2123‧‧‧ Backend

2124‧‧‧Light source

213‧‧‧ front main face

214‧‧‧ after the main face

215‧‧‧ Weekly

216‧‧‧ air inlet

217‧‧ vents

22‧‧‧Motor

221‧‧‧ shaft

23‧‧‧ Impeller

231‧‧‧ fan leaves

24‧‧‧Grid drive mechanism

25‧‧‧Steering grille

251‧‧‧ hood

3‧‧‧Ceiling fan

31‧‧‧Shell

311‧‧‧First housing part

312‧‧‧Second housing part

3121‧‧‧Circular Diversion Ring

3122‧‧‧ front end

3123‧‧‧ Backend

3124‧‧‧Light source

3125‧‧‧Ring peripheral partition

313‧‧‧ front main face

Main face after 314‧‧

315‧‧‧ Weekly

316‧‧‧ air inlet

317‧‧‧air outlet

32‧‧‧Motor

321‧‧‧ shaft

33‧‧‧ Impeller

331‧‧‧ fan leaves

34‧‧‧Grid drive mechanism

35‧‧‧Steering grille

Figure 1 is a cross-sectional view of a conventional fan structure for a light steel frame.

Figure 2 is a cross-sectional view of another fan structure for use on a light steel frame.

Figure 3 is a perspective assembled view of a first embodiment of the ceiling fan of the present invention.

Figure 4 is a perspective exploded view of the first embodiment of the ceiling fan of the present invention.

Figure 5 is a side cross-sectional view showing a first embodiment of the ceiling fan of the present invention.

Fig. 6 is a schematic view showing the flow field of the first embodiment of the ceiling fan of the present invention.

Figure 7 is a perspective assembled view of a second embodiment of the ceiling fan of the present invention.

Figure 8 is a perspective exploded view of a second embodiment of the ceiling fan of the present invention.

Figure 9 is a side cross-sectional view showing a second embodiment of the ceiling fan of the present invention.

Figure 10 is a schematic view of the flow field of the second embodiment of the ceiling fan of the present invention.

2‧‧‧Ceiling fan

21‧‧‧ housing

211‧‧‧First housing part

212‧‧‧Second housing part

216‧‧‧ air inlet

217‧‧ vents

22‧‧‧Motor

221‧‧‧ shaft

23‧‧‧ Impeller

231‧‧‧ fan leaves

24‧‧‧Grid drive mechanism

25‧‧‧Steering grille

251‧‧‧ hood

Claims (14)

A ceiling fan comprising: a housing comprising a first housing portion and a second housing portion; a motor having a rotor and a stator; and an impeller fixedly coupled to the rotor of the motor; the motor being driven by the housing Holding, the second housing portion is disposed on a front side of the first housing portion and is provided with an annular air guiding ring substantially surrounding the impeller, the annular air guiding ring has a front end and a rear end along the ring In the radial section of the shape of the guide coil, the rear end of the annular guide ring has a U-shaped, V-shaped, semi-circular or curved outer contour. The ceiling fan of claim 1, wherein the rotor is an inner rotor, the inner rotor is fixed to a rotating shaft, and the impeller is directly or indirectly fixed to the rotating shaft. The ceiling fan of claim 2, wherein the rotor is an outer rotor, and the impeller is fixed to the outer rotor. The ceiling fan of claim 1, wherein the annular guide is provided with at least one light source at a front end. The ceiling fan of claim 1, wherein the annular guide ring is provided with a recess or a groove opening in the front end, and at least one light source is disposed in the recess or groove. The ceiling fan of claim 4, wherein the at least one light source is a semiconductor light emitting element. The ceiling fan of any one of claims 1 to 5, wherein the housing has a front main surface, a rear main surface opposite the front main surface, and The front surface of the front main surface and the rear main surface are connected, and the air outlet of the ceiling fan is disposed on the front main surface, and the air inlet of the ceiling fan is disposed on the circumferential surface. The ceiling fan of claim 7, wherein a rectifying grid, a diversion grille, a steering grille, a spiral grille or a protective grille are further disposed near the air outlet. The ceiling fan of claim 8, wherein the rectifying grid, the diversion grille, the steering grille, the spiral grille or the protective grille are removably disposed at the air outlet nearby. The ceiling fan of any one of claims 1 to 5, wherein the housing has a front main surface, a rear main surface opposite the front main surface, and a circumference connecting the front main surface and the rear main surface The air outlet of the ceiling fan is disposed on the front main surface, and the air inlet of the ceiling fan is disposed on the front main surface outside the air outlet. The ceiling fan of claim 10, wherein the air outlet is disposed at a position further forward than the air inlet in the front-rear direction. The ceiling fan of claim 10, wherein a rectifying grid, a diversion grille, a steering grille, a spiral grille or a protective grille is further disposed near the air outlet. The ceiling fan of claim 12, wherein the rectifying grid, the diversion grille, the steering grille, the spiral grille or the protective grille are removably disposed at the air outlet nearby. The ceiling fan of claim 10, wherein at least one annular peripheral partition surrounding the annular guide ring and coaxial with the annular guide ring is further disposed at the air inlet to increase the intake air. Smoothness.