TWI679350B - Air circulation device - Google Patents

Abstract

An air circulation device includes a support frame fixed to a ceiling, a fan motor fixed to the fan, and a fan connected below the fan; an air guide plate is provided below the fan, and the fan has an arc-shaped air guide surface facing the fan; the fan and The wind deflector is covered by a cover body. The bottom end of the cover has a skirt extending to the periphery of the wind deflector. A wind guiding space and a ring-shaped air outlet are formed between the skirt and the wind guiding surface. Among them, the air outlet can change its area and direction by the relative movement of the cover body and the wind deflector, and then adjust the air pressure and direction.

Description

Air circulation device

The present invention relates to an air circulation device, and more particularly to an air circulation device capable of changing the blowing pressure and direction.

A type of electric fan hanging down from the ceiling is called a ceiling fan. A common ceiling fan is a structure type in which fan blades are exposed to the outside, and when driven to rotate, the airflow can be caused to generate wind. However, the fan blades are easy to accumulate dust when exposed to the outside, and the dust will be blown off when rotating, affecting the environment.

Therefore, there is a ceiling fan that conceals the fan blades inside the structure. As disclosed in Chinese Patent Publication No. I509159, the fan blades are covered with a shell, wherein the inside of the shell is provided with a wind-conducting space, and The periphery of the body is provided with an air outlet, so when the fan blades rotate, the airflow flows along the air guide space and blows out from the air outlet. However, in the above conventional structure, the air outlet is fixed, and its area and outlet direction cannot be adjusted and changed, so that the airflow can only be output with a fixed air volume and direction, and cannot be adjusted according to actual use requirements.

In view of this, how to improve the above problems is the primary problem to be solved by the present invention.

The main object of the present invention is to provide an air circulation device, which can change the area and direction of the air outlet, thereby adjusting the pressure and wind direction of the output airflow, and has the effects of improving the blowing range and convenience of use.

In order to achieve the foregoing object, the present invention provides an air circulation device including: a support frame fixed to a ceiling and a fan motor fixed on the support frame; 风扇 a fan connected to the fan motor; 导 a wind guide Plate, which is arranged below the fan; the air guide plate has an arc-shaped air guide surface facing the fan; 罩 a cover body, which is provided outside the fan and the air guide plate; the bottom end of the cover body There is a skirt extending to the periphery of the wind deflector, and a wind guiding space and a ring-shaped air outlet are formed between the skirt and the air guiding surface; the air outlet can pass through the cover body and the air guide. The relative movement of the wind disc changes its area and direction, and then adjusts the amount and direction of the wind.

In an embodiment, the support frame is further fixed with a control motor, which extends a drive shaft with a threaded section, the cover is provided with a transverse rib, the rib is provided with a screw hole, and the drive shaft and the screw hole By screwing, when the control motor drives the driving shaft to rotate, the cover body is displaced relative to the wind deflector.

In an embodiment, a plurality of guide blocks are provided on the air guide surface of the wind deflector, and each guide block extends outward from the center of the air guide surface in an arc shape.

In one embodiment, the cover body is provided with a plurality of air suction openings arranged at intervals in a fence shape.

In one embodiment, the wind deflector is provided with a lamp.

The above-mentioned objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of selected embodiments below.

Please refer to FIGS. 1 and 2. The air circulation device provided by the present invention includes a support frame 1, which is formed by a plurality of rods and plates to form a stable structure for fixing a fan motor 2. A top plate 11 is provided on the top of the support frame 1, and the top plate 11 can be fixed on the ceiling 7 by using fixing elements such as screws, so that the support frame 1 can be fixedly disposed.

Bearing on, the fan motor 2 protrudes downward from a transmission shaft 21 and is connected to a fan 3, thereby driving the fan 3 to rotate and generate airflow. After the transmission shaft 21 passes through the fan 3, it is further connected to a wind deflector 4, wherein the wind deflector 4 has a wind deflection surface 41 facing the fan 3, which is formed in an arc shape and has a size larger than the fan. 3 area. In this embodiment, a lamp 42 can be further arranged at the bottom of the wind deflector 4 to increase functionality and decoration.

The fan 3 and the wind deflector 4 are further provided with a cover 5. The upper end of the cover 3 has a straight tube portion 51 covering the support frame 1 and the fan 3. The lower end is provided with an extended skirt portion 52 that extends to the periphery of the air guide plate 4 and covers the air guide plate 4 above. An air-guiding space 43 is formed between the skirt portion 52 and the air-guiding surface 41, and a gap between the peripheral edge of the skirt portion 52 and the peripheral edge of the air-guiding plate 4 forms an annular air outlet 44. When the fan 3 rotates, the scrolled airflow enters the cover 5 from the air inlet 511, passes through the fan 3, and is blocked by the wind deflector 4 downward, and will be sideways in the air guide space 43. It flows along the air guide surface 41 and is discharged from the air outlet 44.

In this embodiment, a plurality of guide blocks 45 are provided on the air guide surface 41 of the wind deflector 4, and each guide block 45 extends outward from the center of the air guide surface 41 in an arc shape. According to this, the flow of airflow on the air guide surface 41 will form a revolving cyclone based on the shape of each guide block 45, and the wind speed output from the air outlet 44 can be increased.

In addition, the support frame 1 is further fixed with a control motor 6 above the fan motor 2, which is provided with a driving shaft 61 protruding upward, wherein the driving shaft 61 has a thread section 62; on the other hand, the cover A horizontally arranged rib 512 is provided in the straight barrel portion 51 of the body 5. The rib 512 is provided with a screw hole 513, and the drive shaft 61 is screwed into the screw hole 513.

In the above structure, since the control motor 6, the fan motor 2 and the support frame 1 are fixed as a whole and fixed to the ceiling 7, when the control motor 6 drives the driving shaft 61 to rotate, the ribs are acted by the screw. The 512 will generate relative upward and downward displacements, which in turn will synchronously drive the cover 5 to move. The cover 5 is moved relative to the wind deflector 4 so that the position of the skirt portion 52 changes the area and direction of the air outlet 44. In detail, as shown in FIG. 2, the skirt portion 52 is away from the air guide. When the wind plate 4 is near, the area of the air outlet 44 is small, and the direction of the air outlet is downward, and when the skirt portion 52 is away from the air guide plate 4, as shown in FIG. 3, the air outlet 44 The area becomes larger and the direction of the wind changes to the side. According to this, the cover body 5 can be moved by operating the control motor 6 to change the area and direction of the air outlet 44 to further adjust the air volume and direction, and increase the blowing range.

However, the disclosure of the above embodiments is only used to illustrate the present invention and is not intended to limit the present invention. Therefore, the replacement of equivalent components should still belong to the scope of the present invention.

In summary, those skilled in the art can understand that the present invention can indeed achieve the aforementioned purpose, and it has indeed complied with the provisions of the Patent Law, and filed an application in accordance with the law.

1‧‧‧ support

11‧‧‧ roof

2‧‧‧fan motor

21‧‧‧Drive shaft

3‧‧‧fan

4‧‧‧ wind deflector

41‧‧‧ wind guide surface

42‧‧‧Lighting

43‧‧‧Wind-conducting space

44‧‧‧outlet

45‧‧‧Guide block

5‧‧‧ cover

51‧‧‧Straight

511‧‧‧suction port

512‧‧‧ rib

513‧‧‧Screw holes

52‧‧‧skirt

6‧‧‧Control motor

61‧‧‧Drive shaft

62‧‧‧Thread Section

7‧‧‧ ceiling

Fig. 1 is a schematic three-dimensional exploded view of the present invention; Fig. 2 is a schematic cross-sectional view of the present invention; and Fig. 3 is a schematic view of a use state of the present invention.

Claims (5)

An air circulation device includes: a support frame fixed to a ceiling, and a fan motor fixed on the support frame; a fan connected to the fan motor; and a wind guide plate disposed below the fan The air guide plate has an arc-shaped air guide surface facing the fan; a cover body is arranged outside the fan and the air guide plate; the bottom end of the cover body has an extension extending to the air guide plate; Skirt on the periphery of the skirt, a wind-guiding space and a ring-shaped air outlet are formed between the skirt and the wind-guiding surface; the cover is driven by a control motor to move relative to the wind-guiding disc and change The area and direction of the air outlet, so as to adjust the volume and direction of the air outlet. The air circulation device according to claim 1, wherein the control motor is fixed to the support frame, which extends a drive shaft with a threaded section, the cover is provided with a transverse rib, and the rib is provided with a screw hole, and The drive shaft is screwed with the screw hole, so that when the control motor drives the drive shaft to rotate, the cover body is displaced relative to the wind deflector. The air circulation device according to claim 1, wherein a plurality of guide blocks are provided on the air guide surface of the wind deflector, and each guide block extends outward from the center of the air guide surface in an arc shape. The air circulation device according to claim 1, wherein the cover body is provided with a plurality of air inlets arranged at intervals in a fence shape. The air circulation device according to claim 1, wherein the air deflector is provided with a lamp.