CN-115333284-B - Brushless motor of radiator fan

Abstract

The invention relates to the technical field of motor heat dissipation, in particular to a radiator fan brushless motor, which comprises a shell and a motor, wherein a plurality of slots for inserting radiating fins are formed in the bottom of the shell, the motor is installed in the shell, one end of the motor is connected with a fan, the slots are formed in one side of an air inlet surface of the fan, a first air ventilation cylinder and a second air ventilation cylinder are sequentially arranged in the shell from inside to outside, and an air outlet of the second air ventilation cylinder is right opposite to one side of the air inlet surface of the fan. According to the invention, the two independent first ventilation cylinders and the second ventilation cylinders which are communicated with each other in an air flow manner are arranged, the first ventilation cylinders are sleeved outside the motor, when the motor drives the fan to work, a part of blown air enters the first ventilation cylinders when the heat of the part to be radiated, which is connected with the shell, is radiated, and the air in the first ventilation cylinders is circulated, so that the heat radiation function of the motor is realized, and the risk of damage to the motor caused by long-time circulating use condition of the motor is reduced.

Inventors

• ZUO GUIFENG
• CHEN SHI

Assignees

• 瑞安市日正汽车部件有限公司

Dates

Publication Date

20260505

Application Date

20220913

Claims (4)

1. 1. A radiator fan brushless motor, comprising: the shell is provided with a plurality of slots for inserting the radiating fins at the bottom of the shell; The motor is arranged in the shell, one end of the motor is connected with the fan, and the slot is arranged on one side of the air inlet surface of the fan; Wherein, the shell is internally provided with a first ventilation cylinder and a second ventilation cylinder from inside to outside in sequence, the air outlet of the second ventilation cylinder is opposite to one side of the air inlet surface of the fan, and the motor is arranged in the first ventilation cylinder; The outer wall of the first ventilation cylinder, which is far away from the fan, is provided with a ventilation hole, and the ventilation hole is communicated with the second ventilation cylinder; An air channel is arranged between the first ventilation barrel and the air outlet surface of the fan, an air inlet of the air channel faces the air outlet surface of the fan, and an air outlet of the air channel extends into the first ventilation barrel from the upper part of the first ventilation barrel; One side of the air inlet of the ventilating duct is provided with an air deflector, which comprises: the connecting part is provided with one end which is arranged at one side of the air inlet of the ventilating duct and is inclined towards the direction of the fan from the direction of the connecting part and the ventilating duct; The bending part is arranged at the tail end of the connecting part and bends towards the direction of the ventilating duct; The air inlet of the ventilating duct is provided with a sliding cavity, and the connecting part is guided to slide in the sliding cavity and can cover the air inlet to block the air inlet; the aviation baffle still includes: the wing plates are symmetrically arranged on two sides of the air deflector, and one end of the wing plates facing the air outlet face of the air deflector is obliquely arranged from the joint of the wing plates and the air deflector towards the direction of the air deflector; The sliding cavity is internally provided with a thermal expansion ring, and the thermal expansion ring is arranged at one end of the air deflector far away from the fan.
2. 2. The motor of claim 1, wherein the plurality of air holes are arranged at intervals along the circumferential direction of the first air cylinder.
3. 3. The motor of claim 1, wherein a plurality of cooling fins are disposed in the first air cylinder, and one side of each cooling fin is attached to an outer side end of the motor.
4. 4. The fan-brushless motor of claim 1, wherein the number of the air channels is five and is arranged along the circumference of the housing, and the air channels are L-shaped with concave surfaces facing the fan.

Description

Brushless motor of radiator fan Technical Field The invention relates to the technical field related to motor heat dissipation, in particular to a radiator fan brushless motor. Background In the prior art, the radiator fan brushless motor has poor heat dissipation function, and the risk of motor damage caused by long-time cyclic use conditions exists. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a radiator fan brushless motor, which can effectively solve the risk of motor damage caused by long-time cyclic use in the prior art. In order to achieve the above purpose, the invention is realized by the following technical scheme: The invention provides a radiator fan brushless motor, which comprises a shell, wherein a plurality of slots for inserting radiating fins are formed in the bottom of the shell; The motor is arranged in the shell, one end of the motor is connected with the fan, and the slot is arranged on one side of the air inlet surface of the fan; the motor is arranged in the first ventilation cylinder, is positioned between the first ventilation cylinder and the fan air outlet face, and is used for guiding a part of air blown by the fan into the first ventilation cylinder. Further, an air passing hole is formed in the outer wall of one side, far away from the fan, of the first air vent cylinder, and the air passing hole is communicated with the second air vent cylinder. Further, the first ventilation barrel further comprises radiating fins, the radiating fins are provided with a plurality of radiating fins and are regularly arranged in the first ventilation barrel, and one side of each radiating fin is attached to the outer side end of the motor. Further, the air inlet of the ventilating duct faces the air outlet face of the fan, and the air outlet of the ventilating duct extends into the first ventilating duct from the upper portion of the first ventilating duct. Further, one side of the air inlet of the ventilating duct is provided with an air deflector, the air deflector comprises a connecting portion and a bending portion, one end of the connecting portion is installed on one side of the air inlet of the ventilating duct and inclines towards the direction where the fan is located from the direction of the connecting portion of the ventilating duct, and the bending portion is arranged at the tail end of the connecting portion and bends towards the direction of the ventilating duct. Further, the air inlet of the ventilating duct is provided with a sliding cavity along the blowing direction of the fan, and one side of the connecting part is guided to slide in the sliding cavity and can block the air inlet. Further, the air deflector also comprises wing plates, the wing plates are symmetrically arranged on two sides of the air deflector, and one end of the air deflector facing the air outlet face of the air deflector is obliquely arranged from the joint of the air deflector and the air deflector towards the direction of the air deflector. Further, a thermal expansion ring is arranged in the sliding cavity, and one end of the thermal expansion ring is opposite to one end of the air deflector, which is far away from the fan. Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects: According to the invention, the two independent first air ventilation cylinders and the second air ventilation cylinders which are communicated with each other in an air flow mode are arranged, the first air ventilation cylinders are sleeved outside the motor, when the motor drives the fan to work, a part of blown air enters the first air ventilation cylinders when the heat dissipation is carried out on the part to be dissipated connected with the shell, air in the first air ventilation cylinders is circulated, after the temperature emitted by the motor during work is taken away, the air is circulated into the second air ventilation cylinders and discharged, the heat dissipation function of the motor is realized, and the risk of damage to the motor caused by long-time circulation use condition of the motor is reduced. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention; FIG. 2 is a schematic view of the whole structure of the embodiment of the present invention; FIG. 3 is a schematic partial cross-sectional view of a structure in an embodiment of the invention; FIG. 4 is a schematic diagram of the struc