Blower motor heat dissipation structure

Abstract

A blower motor cooling structure includes a motor and a fan assembly. The motor has an output shaft, and the fan assembly has at least one fan wheel located at the end of the output shaft. The fan wheel has a fan disc, and the fan disc has a plurality of fan blades evenly arranged around its periphery. The fan wheel has a guide element on the surface of the fan disc adjacent to the motor, and the guide element has a plurality of guide vanes arranged radially at equal angles. The end section of the guide vane has a thinner blade edge of the adjacent motor and a thicker blade back attached to the surface of the fan disc. In this way, the guide element on the fan wheel can generate guided airflow to exhaust the hot air inside the motor, allowing it to be quickly carried out by the fan wheel, thereby achieving heat dissipation and cooling, and extending the service life of the motor.

Description

Technical Field

[0001] This invention belongs to the technical field of blowers, specifically a blower motor heat dissipation structure. Prior Technology

[0002] Note that blowers are widely used in various places that require air exchange or exhaust gas, such as kitchens or cooking stoves, to quickly expel exhaust gas. The structure of existing blowers generally includes a hollow casing and a fan assembly. The top of the casing has an eccentric exhaust port, and each side of the casing has a corresponding air inlet. Inside the casing, a motor is locked between the two air inlets. The fan assembly has a corresponding fan wheel on each of the output shafts of the motor. When the motor drives the fan wheels to rotate at high speed, air is drawn in through the air inlets on both sides of the casing and discharged through the exhaust port at the top of the casing using centrifugal force.

[0003] Since the motor is located between the two fan wheels of the fan assembly, a high-speed rotating closed air chamber will be formed between the two fan wheels under high-speed operation. This makes it difficult for the airflow between the two fan wheels to be discharged to form a vortex. The heat generated by the high-speed operation of the motor cannot be discharged smoothly. This will directly affect the heat dissipation and cooling effect of the motor during operation. If the high temperature cannot be discharged, it will easily cause damage to the motor, thereby affecting the air delivery quality and service life of the blower.

[0004] In other words, existing blowers have a problem with motor heat dissipation, which makes it difficult for the motor to dissipate heat and cool down during operation. How to solve the aforementioned problem is something that the industry and users are eager to explore, and it is also the subject that this invention aims to explore and solve.

[0005] In view of the above-mentioned shortcomings and needs, the inventor believed that further improvements were necessary. Therefore, based on years of experience in related technologies and product design and manufacturing, the inventor researched and created solutions to address the above-mentioned deficiencies and actively sought solutions. Through continuous research and trial production, the inventor finally successfully created a blower motor heat dissipation structure to overcome the problems and inconveniences caused by poor heat dissipation in existing products. Summary of the Invention

[0006] The main objective of this invention is to provide a heat dissipation structure for a blower motor, so as to effectively exhaust the airflow inside the motor and prevent the formation of a closed air chamber due to high-speed eddies, thereby achieving the purpose of heat dissipation.

[0007] Another major objective of this invention is to provide a heat dissipation structure for a blower motor that can prevent the motor from accumulating high temperatures, thereby effectively reducing the operating temperature of the motor, reducing the probability of motor damage, and thus extending its service life.

[0008] Therefore, the present invention mainly achieves the above-mentioned objectives and effects through the following technical means, including a motor and a fan assembly. The motor has a motor housing covering the motor and an output shaft driven by the motor. A plurality of ventilation holes are formed on the two side walls of the motor housing, and at least one end of the output shaft protrudes from the wall of the motor housing. The fan assembly has at least one fan wheel disposed at the end of the output shaft. The fan wheel has a fan disc, and a plurality of fan blades are evenly arranged around the periphery of the fan disc. Furthermore, the fan blades have an inner ring space corresponding to the motor and an outer ring space different from the motor formed on the two side surfaces opposite to the fan disc.

[0009] At least one of the fan wheels is provided with a guide member, and the guide member is located in the inner ring space of the fan disc adjacent to the motor. The guide member has a plurality of guide vanes arranged radially at equal angles, and the end section of the guide vane has a thinner blade portion adjacent to the motor and a thicker blade back portion attached to the surface of the fan disc.

[0010] Through the specific implementation of the aforementioned technical means, the blower motor heat dissipation structure of the present invention utilizes the fan wheel to provide a guide element on the surface adjacent to the motor. At the same time, the guide element has a design with multiple guide vanes. When the fan wheel rotates at high speed, each guide vane can use its blade edge to scrape the hot air emitted from the vent on the motor and carry it out through the fan wheel's blade disturbance, without creating a closed air chamber due to high-speed eddies. This can prevent the motor from accumulating high temperature, thereby effectively reducing the motor's operating temperature, reducing the probability of motor damage, extending its service life, and improving its practicality, further increasing its added value and economic benefits.

[0011] Furthermore, the present invention utilizes the following technical means to further achieve the aforementioned objectives and effects; such as:

[0012] Each of the guide vanes of the guide member can be formed on the outer peripheral surface of a mounting plate, and the mounting plate has a shaft hole coaxial with the fan plate. The mounting plate has a plurality of connecting through holes around the shaft hole, and the fan plate has a plurality of corresponding connecting locking holes for locking the mounting plate of the guide member to the side surface of the fan plate corresponding to the motor housing using a plurality of fasteners.

[0013] The fan disc shaft has a shaft hole protrusion that can be locked onto the aforementioned output shaft, allowing the fan disc to be locked onto the output shaft of the motor using the shaft hole protrusion.

[0014] The flow guide is formed on the surface of the fan disk adjacent to the motor housing in an annular mounting ring, and the mounting ring is coaxial with the fan disk, while each flow guide is disposed on the outer peripheral surface of the mounting ring.

[0015] The fan assembly has a convex shaft component on its fan disc shaft, which allows the fan disc to be locked to the output shaft of the motor.

[0016] Each fan blade of the fan wheel has a concave arc-shaped structure that is different from the rotation direction of the output shaft, and each guide vane can also have an arc-shaped structure. The concave direction of each guide vane is opposite to that of each fan blade, so that each guide vane has a multi-sloping air guiding surface on the concave surface of the arc-shaped concave shape.

[0017] The motor can be a dual-shaft motor, and the output shaft can be a double-headed output shaft that extends through both ends of the side walls of the motor housing.

[0018] To enable your review committee to further understand the structure, features and other objectives of the present invention, several preferred embodiments of the present invention are described below in detail with reference to the accompanying drawings, so as to enable those skilled in the art to implement the invention. Simple Explanation of the Diagram

[0019] Figure 1: A three-dimensional view of a preferred embodiment of the present invention. Figure 2: An exploded perspective view of a preferred embodiment of the present invention, illustrating the appearance and relative relationships of its main components. Figure 3: A side cross-sectional view of a preferred embodiment of the present invention, illustrating its operation and state. Figure 4: A three-dimensional view of another preferred embodiment of the present invention. Figure 5: An exploded perspective view of another preferred embodiment of the present invention, illustrating the appearance and relative relationship of its main components. Figure 6: A side cross-sectional view of another preferred embodiment of the present invention, illustrating its operation and state. Implementation

[0020] In the specific embodiments and components of the invention illustrated in the accompanying drawings, all references to front and back, left and right, top and bottom, upper and lower, and horizontal and vertical are for convenience of description only and are not intended to limit the invention or restrict its components to any position or spatial orientation. Dimensions specified in the drawings and specification may be varied according to the design and requirements of the invention without departing from the scope of the claims.

[0021] The blower motor heat dissipation structure of the present invention is supplied for use in the housing of a blower, as shown in Figures 1 and 2. It consists of a motor (10) and a fan assembly (20) that can be locked inside the housing. When the motor (10) is running, it can drive the fan assembly (20) to rotate at high speed, so as to draw in external air from both sides of the housing and discharge the air from the top of the housing by using centrifugal force.

[0022] The motor (10) has a motor housing (11) covering a motor (not shown in the figure) and an output shaft (15) extending through the motor shaft. The motor housing (11) has a plurality of ventilation holes (12) formed on both sides of its side walls to allow the heat generated by the motor (10) during operation to dissipate. The motor (10) can be a dual-shaft motor, and the output shaft (15) can be a double-headed output shaft with both ends extending through the side walls of the motor housing (11). The preferred embodiment of the present invention is a dual-shaft motor with the output shaft (15) being a double-headed output shaft.

[0023] The fan assembly (20) is composed of two fan wheels (21) located opposite each other at both ends of the output shaft (15) of the motor (10). Each fan wheel (21) has a fan disc (22), and the fan disc (22) has a shaft hole protrusion (23) that can be locked into the aforementioned output shaft (15) at its center. The fan disc (22) has a plurality of fan blades (25) evenly arranged around its periphery. Each fan blade (25) has an arc-shaped structure that is concave to the rotation direction of the output shaft (15). Furthermore, each fan blade (25) has an inner ring space (26) corresponding to the motor (10) and an outer ring space (27) different from the motor (10) formed on the two sides of the fan disc (22).

[0024] The preferred embodiment of the present invention is characterized by the following features as shown in Figures 2 and 3: at least one of the fan wheels (21) of the fan assembly (20) is provided with a guide member (30), and the guide member (30) is located in the inner ring space (26) of the fan disk (22) of the fan wheel (21) adjacent to the motor (10), so that the guide member (30) can rotate at high speed coaxially and synchronously with the fan wheel (21). Furthermore, the guide member (30) has a plurality of guide vanes (31) arranged radially at equal angles. Each guide vane (31) can have an arc-shaped structure, and the concave direction of each guide vane (31) is opposite to that of each fan blade (25). The guide vane (31) is recessed, and its end section has a thinner blade edge (311) adjacent to the motor (10) and a thicker blade back (312) attached to the surface of the fan disc (22). This makes the guide vane (31) have a multi-angled air guide surface (315) on the curved recessed surface. When the fan wheel (21) rotates at high speed, the air guide surface (315) of each guide vane (31) can drive the hot air of the motor (10) to be discharged from the vent (12) of the motor housing (11) [as shown in Figure 3], and be driven out by the fan blades (25) of each fan wheel (21), thereby achieving the purpose of heat dissipation and cooling.

[0025] Furthermore, each of the guide vanes (31) of the guide member (30) can be formed on the outer peripheral surface of a mounting plate (32), and the mounting plate (32) has a shaft hole (33) corresponding to the shaft hole protrusion (23) of the fan plate (22) for the output shaft rod (15) to pass through. In addition, the mounting plate (32) has a plurality of connecting through holes (341) formed around the shaft hole (33), and the fan plate (22) has a plurality of corresponding connecting locking holes (342) for locking the mounting plate (32) of the guide member (30) to one side surface of the fan plate (22) corresponding to the motor housing (11) using a plurality of fasteners (345).

[0026] This allows for the construction of a blower motor cooling structure that provides excellent airflow and enhances heat dissipation.

[0027] In practical application, the heat dissipation structure of the blower motor of the present invention is as shown in Figures 1, 2 and 3. A fan assembly (20) is provided on the output shaft (15) of the blower motor (10), and the fan discs (22) of the fan wheels (21) on both sides of the fan assembly (20) are provided with guide elements (30) on the surface of the inner ring space (26) adjacent to the motor (10). This allows the guide elements (30) to rotate synchronously at high speed with the fan wheels (21). Simultaneously, the guide vanes (31) of each guide element (30) have multiple... The design of the inclined air guide surface (315) allows each guide vane (31) to use its blade (311) to push the hot air emitted from each vent (12) on the motor housing (11) of the motor (10) when the fan wheel (21) rotates at high speed. The hot air is then driven to flow through the inclined air guide surface (315) of each guide vane (31) and carried out by the fan blades (25) of each fan wheel (21). This allows the motor (10) to achieve heat dissipation and cooling, thereby extending the service life of the motor (10).

[0028] Furthermore, as shown in Figures 4, 5, and 6, another preferred embodiment of the present invention is described, wherein the fan assembly (20) consists of two fan wheels (21) respectively disposed at opposite ends of the output shaft (15), and each fan wheel (21) has a fan disc (220), and the fan disc (220) has a plurality of fan blades (25) evenly arranged around its periphery, and the fan disc (220) has a convex shaft (230) at its core, so that the fan disc (220) can be locked to both ends of the output shaft (15) of the motor (10) by means of the convex shaft (230). Furthermore, each fan blade (25) has an inner ring space (26) corresponding to the motor (10) and an outer ring space (27) different from the motor (10) formed around the two sides of the fan disc (220);

[0029] Furthermore, at least one of the fan wheels (21) is integrally provided with a guide member (30), and the guide member (30) is disposed on the surface of the inner ring space (26) adjacent to the motor (10) in the fan disk (22). The guide member (30) forms an annular mounting ring (320) on the surface of the fan disk (220), and the mounting ring (320) is coaxial with the fan disk (220). In addition, a plurality of guide vanes (310) are formed on the outer peripheral surface of the mounting ring (320) in an equiangular radial arrangement. The guide vanes (310) may have an arc-shaped structure, and the concave direction of the guide vanes (310) is opposite to that of each fan blade (25). The guide vane (310) is recessed, and its end section has a thinner blade (311) adjacent to the motor (10) and a thicker blade back (312) attached to the surface of the fan disc (22). This makes the guide vane (310) have a multi-sloping air guide surface (315) on the curved recessed surface. When the fan wheel (21) rotates at high speed, the air guide surface (315) of the guide vane (310) can drive the hot air of the motor (10) to be discharged from the vent (12) of the motor housing (11) [as shown in Figure 6], and be driven out by the fan blades (25) of the fan wheel (21), thereby achieving the purpose of heat dissipation and cooling.

[0030] Therefore, it can be understood that this invention is an excellent creation. In addition to effectively solving the problems faced by those with prior knowledge, it also greatly improves the efficacy. Moreover, no identical or similar products have been created or publicly used in the same technical field. Since it also has the effect of improving efficacy, this invention has met the requirements of "novelty" and "inventiveness" for invention patents, and an invention patent application has been filed in accordance with the law.

[0031] 10: Motor 11: Motor housing 12: Vent hole 15: Output shaft 20: Fan assembly 21: Fan wheel 22: Fan plate 220: Fan plate 23: Shaft hole protrusion 230: Cam Shaft 25: Fan blades 26: Inner Ring Space 27: Outer Ring Space 30: Flow guide 31: Flow deflector 310: Flow deflector 311: Blade section 312: Leaf back 315: Air guide surface 32: Installation disk 320: Installation ring 33: Shaft Hole 341: Combined with perforation 342: Combined with keyhole 345: Locking hardware

Claims

1. A blower motor heat dissipation structure, comprising a motor and a fan assembly, the motor having a motor housing covering the motor and an output shaft driven by the motor, wherein a plurality of ventilation holes are formed on the two side walls of the motor housing, and at least one end of the output shaft extends through the wall of the motor housing, and the fan assembly having at least one fan wheel disposed at the end of the output shaft, the fan wheel having a fan disc, and a plurality of fan blades equidistantly arranged around the periphery of the fan disc, and further wherein the fan blades have an inner ring space corresponding to the motor and an outer ring space different from the motor formed on the two side surfaces opposite to the fan disc; At least one of the fan wheels is provided with a guide member, which is located in the inner ring space of the fan wheel adjacent to the motor. The guide member has a plurality of guide vanes arranged radially at equal angles. The end section of the guide vane has a thin blade edge adjacent to the motor and a thick blade back attached to the surface of the fan wheel. Each fan blade of each fan wheel has a concave arc-shaped structure that is different from the rotation direction of the output shaft. Each guide vane can also have an arc-shaped structure, and the concave direction of each guide vane is opposite to that of each fan blade, so that each guide vane has a multi-slope air guiding surface on the concave surface of the arc-shaped concave shape.

2. The blower motor heat dissipation structure as described in claim 1, wherein, Each of the guide vanes of the guide member can be formed on the outer peripheral surface of a mounting plate, and the mounting plate has a shaft hole coaxial with the fan plate. The mounting plate has a plurality of connecting through holes around the shaft hole, and the fan plate has a plurality of corresponding connecting locking holes for locking the mounting plate of the guide member to the side surface of the fan plate corresponding to the motor housing using a plurality of fasteners.

3. The blower motor heat dissipation structure as described in claim 2, wherein, The fan disc shaft has a shaft hole protrusion that can be locked onto the aforementioned output shaft, allowing the fan disc to be locked onto the output shaft of the motor using the shaft hole protrusion.

4. The blower motor heat dissipation structure as described in claim 1, wherein, The flow guide is formed on the surface of the fan disk adjacent to the motor housing in an annular mounting ring, and the mounting ring is coaxial with the fan disk, while each flow guide is disposed on the outer peripheral surface of the mounting ring.

5. The blower motor heat dissipation structure as described in claim 4, wherein, The fan assembly has a convex shaft member on its fan disc shaft, which allows the fan disc to be locked to the output shaft of the motor.

6. The blower motor heat dissipation structure as described in any one of claims 1 to 5, wherein, The motor can be a dual-shaft motor, and the output shaft can be a double-headed output shaft that extends through both ends of the side walls of the motor housing.

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