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EP-4741668-A1 - FAN

EP4741668A1EP 4741668 A1EP4741668 A1EP 4741668A1EP-4741668-A1

Abstract

The present application relates to the technical field of fans, and in particular, to a fan. The fan includes a head assembly, a support assembly, and a bracket assembly. The support assembly is capable of driving the bracket assembly to rotate around a first axis extending along a first direction. The head assembly includes a housing part; an air outlet and a first air inlet are disposed at two ends of the housing part in a second direction, and a second air inlet is disposed on a side wall of the housing part. The bracket assembly includes a connecting wall and two hinge parts; the support assembly is connected to the bracket assembly via the connecting wall, and the two hinge parts are respectively hinged to two ends of the housing part in a third direction, such that the bracket assembly is capable of driving the housing part to rotate around a second axis extending along the third direction. The connecting wall includes a third air inlet, and the third air inlet can be disposed opposite to the second air inlet. According to the fan provided in the present application, the stability of the rotation of the head assembly is improved, the uniformity of air intake of the head assembly is improved, and the probability of abnormal noise generated during rotation is reduced.

Inventors

  • LU, Yaoyuan
  • CHEN, QI
  • LIU, Yigang
  • LIU, Chenchen

Assignees

  • Suzhou BeiAng Smart Technology Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240521

Claims (20)

  1. A fan, comprising a head assembly, a support assembly, and a bracket assembly, wherein the support assembly extends along a first direction, the bracket assembly is disposed at one end of the support assembly in the first direction, and the support assembly is configured to be capable of driving the bracket assembly to rotate around a first axis extending along the first direction; the head assembly comprises a housing part, and the housing part is provided with an air outlet, a first air inlet, and a second air inlet; the air outlet and the first air inlet are disposed at two ends of the housing part in a second direction, and the second air inlet is disposed on a side wall of the housing part; the second direction intersects with the first direction; the bracket assembly comprises a connecting wall and two hinge parts; the support assembly is connected to the bracket assembly via the connecting wall, and the two hinge parts are respectively hinged to two ends of the housing part in a third direction, such that the bracket assembly is capable of driving the housing part to rotate around a second axis extending along the third direction; and the connecting wall comprises a third air inlet, and the third air inlet can be disposed opposite to the second air inlet.
  2. The fan according to claim 1, wherein the housing part comprises a first cover, a second cover, and the side wall, and a main air duct extending through the side wall along the second direction is provided within the side wall; the first cover and the second cover are disposed to cover two ends of the main air duct in the second direction, respectively; the air outlet is disposed on the first cover, and the first air inlet is disposed on the second cover; and the side wall comprises an air gathering region and an air inlet region sequentially disposed along the second direction; one end, at which the air gathering region is located, of the side wall is connected to the first cover, and the second air inlets are all disposed in the air inlet region.
  3. The fan according to claim 2, wherein the hinge part is disposed at a junction between the air gathering region and the air inlet region.
  4. The fan according to claim 3, wherein the hinge part is disposed on one side, proximal to the air gathering region in the second direction, of the connecting wall; and the connecting wall is disposed on an outer side of the air inlet region.
  5. The fan according to any one of claims 2 to 4, wherein the head assembly further comprises a fan blade part and a rotating part, both disposed in the main air duct; the rotating part is provided with a rotating shaft extending along the second direction, and the rotating part and the fan blade part are coaxially disposed via the rotating shaft to drive the fan blade part to rotate around the rotating shaft; and the fan blade part comprises a connecting portion and a plurality of blades, and the plurality of blades are evenly arranged along a circumferential direction of the connecting portion.
  6. The fan according to claim 5, wherein the connecting portion is in transmission connection with one end, proximal to the first cover, of the rotating shaft, and the blade extends from the connecting portion toward an outer side of the connecting portion and toward a side on which the second cover is located; and in the second direction, an air inlet gap is provided between one end, distal to the connecting portion, of the blade and the second cover.
  7. The fan according to claim 6, wherein in the second direction, a size of the air inlet gap is 4% to 6% of a size of the main air duct.
  8. The fan according to claim 6 or 7, wherein the second air inlet extends from one end of the air inlet region to the other end along the second direction; at least a portion of the blade extends into the air inlet region; and in the second direction, a size of the portion of the blade extending to the air inlet region accounts for 40% to 50% of a size of the air inlet region.
  9. The fan according to any one of claims 2 to 8, wherein an outer side of the side wall is provided with a placement recess, and the connecting wall is disposed within the placement recess, such that outer side surfaces of both the connecting wall and the side wall are aligned with each other.
  10. The fan according to claim 9, wherein one side, distal to the air outlet, of the placement recess is open; and in a circumferential direction of the side wall, a span of the placement recess is greater than a span of the bracket assembly, such that two ends of the placement recess in the circumferential direction of the side wall extend beyond two end portions of the bracket assembly in the circumferential direction of the side wall, respectively.
  11. The fan according to claim 9 or 10, wherein the placement recess comprises a limiting flange, and the limiting flange is disposed at the two ends of the placement recess in the circumferential direction of the side wall; and the limiting flange is configured to exactly fit against an outer edge of the connecting wall when the head assembly rotates to a limit angle around the second axis.
  12. The fan according to any one of claims 9 to 11, wherein one end, distal to the air outlet, of the placement recess is provided with a clearance chamfer; in the second direction, a size of the clearance chamfer accounts for 8% to 10% of the size of the main air duct; and the clearance chamfer is 12° to 24°.
  13. The fan according to any one of claims 1 to 12, wherein in the second direction, specifically in a direction from one side, facing the first air inlet, of the connecting wall toward the other side, an inner surface of the connecting wall gradually tilts toward an outer side of the connecting wall.
  14. The fan according to claim 13, wherein an included angle between the inner surface of the connecting wall and the second direction is 8° to 20°.
  15. The fan according to any one of claims 1 to 14, wherein a region, in which the third air inlet is provided, of the connecting wall is defined as an air passing region, and other portions of the connecting wall are defined as a reinforcing region, a thickness of the reinforcing region being greater than a thickness of the air passing region.
  16. The fan according to claim 15, wherein the connecting wall comprises a support frame and a cover plate; the support assembly is disposed in a middle portion of the support frame, and the hinge part is fixedly disposed at two ends of the support frame; and the support frame comprises a through groove extending through the support frame, the third air inlet is disposed on the cover plate, and the cover plate is configured to be capable of being snap-fitted to a portion of the support frame between the support assembly and the hinge part, such that the air passing region of the cover plate is disposed opposite to the through groove.
  17. The fan according to claim 16, wherein the outer side of the side wall is provided with a hinge shaft extending along the third direction, and the hinge part is hinged to the side wall via the hinge shaft.
  18. The fan according to claim 16 or 17, wherein the support frame is provided with an air guide chamfer, and the air guide chamfer is disposed around an edge of the through groove.
  19. The fan according to any one of claims 1 to 18, wherein the support assembly comprises a support rod base and a rotating base, wherein the support rod base extends along the first direction, the rotating base is disposed at one end of the support rod base in the first direction, and the support assembly is connected to the bracket assembly via the rotating base to drive the support assembly to rotate around the support rod base.
  20. The fan according to any one of claims 1 to 19, wherein an anti-interference gap is formed between the side wall and the connecting wall, and the anti-interference gap is 3 mm to 8 mm.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present disclosure claims priority to Chinese Patent Application No. 202410521401.5, filed with the China National Intellectual Property Administration on April 28, 2024 and entitled "FAN", the content of which is incorporated herein by reference in its entirety. FIELD OF THE INVENTION The present disclosure relates to the technical field of fans, and in particular, to a fan. BACKGROUND Currently, the mainstream circulating fans are typically configured such that a support bracket 02 is mounted at the rear of a fan head 01, enabling the fan head to swing up and down by means of the structure at the rear. The advantage of such a structure is that the support bracket 02 does not occupy the space of the head, and in the case that the size of the head remains unchanged, fan blades with a relatively large diameter may be selected for the machine, thereby ensuring the performance of the product. In addition, the head structure is complete and unified, making the appearance relatively aesthetically pleasing. However, as shown in FIG. 1, in the structure in which the support bracket 02 is mounted at the rear of the fan head 01, when the fan oscillates up and down, since the connecting point between the support bracket 02 and the fan head 01 is located at the rear of the fan head 01, the distance between the head and the center of gravity of the up-and-down rotation (i.e., the D1 value shown in FIG. 1) and the distance between the rotation center of the side-to-side oscillation and the farthest end of the motor head (i.e., the D2 value shown in FIG. 1) are both relatively large. This increases the load of the motor, and over the long term, not only will abnormal noise be generated, but the service life of the motor will even be adversely affected. In addition, since the back of the fan head 01 is shielded by a portion of the support bracket 02 structure, the air intake at the back is uneven, which increases the operating noise of the machine and disrupts the balance of the head. SUMMARY OF THE INVENTION Embodiments of the present disclosure provide a fan. The fan includes a head assembly, a support assembly, and a bracket assembly. The support assembly extends along a first direction, the bracket assembly is disposed at one end of the support assembly in the first direction, and the support assembly is configured to drive the bracket assembly to rotate around a first axis extending along the first direction. The head assembly includes a housing part, and the housing part is provided with an air outlet, a first air inlet, and a second air inlet; the air outlet and the first air inlet are disposed at two ends of the housing part in a second direction, and the second air inlet is disposed on a side wall of the housing part; the second direction intersects with the first direction. The bracket assembly includes a connecting wall and two hinge parts; the support assembly is connected to the bracket assembly via the connecting wall, and the two hinge parts are respectively hinged to two ends of the housing part in a third direction, such that the bracket assembly is capable of driving the housing part to rotate around a second axis extending along the third direction. The connecting wall includes a third air inlet, and the third air inlet can be disposed opposite to the second air inlet. In one or more embodiments, the housing part includes a first cover, a second cover, and the side wall, and a main air duct extending through the side wall along the second direction is provided within the side wall. The first cover and the second cover are disposed to cover two ends of the main air duct in the second direction, respectively; the air outlet is disposed on the first cover, and the first air inlet is disposed on the second cover. The side wall includes an air gathering region and an air inlet region sequentially disposed along the second direction; one end, at which the air gathering region is located, of the side wall is connected to the first cover, and the second air inlets are all disposed in the air inlet region. In one or more embodiments, the hinge part is disposed at a junction between the air gathering region and the air inlet region. In one or more embodiments, the hinge part is disposed on one side, proximal to the air gathering region in the second direction, of the connecting wall. The connecting wall is disposed on an outer side of the air inlet region. In one or more embodiments, the head assembly further includes a fan blade part and a rotating part, both disposed in the main air duct; the rotating part is provided with a rotating shaft extending along the second direction, and the rotating part and the fan blade part are both coaxially disposed via the rotating shaft to drive the fan blade part to rotate around the rotating shaft. The fan blade part includes a connecting portion and a plurality of blades, and the plurality of blades are evenly arranged along a cir