A high-efficiency heat dissipation device for a brushless DC motor stator

Abstract

The utility model relates to a brushless DC motor field especially relates to a kind of high-efficiency heat sink of brushless DC motor stator, including motor shell, the motor rotor being connected in the inner side of motor shell, the motor stator body being connected in the outer side of motor rotor, the heat conduction component being connected between motor stator body and motor shell, the radiating copper pipe being connected in the outer side of heat conduction component and the fixed seat being connected in the left end of heat conduction component.The utility model when using, when motor rotor and motor shaft rotate, the heat generated outside motor stator body is then conducted to radiating copper pipe on heat conduction sleeve of copper material, subsequently motor shaft drives fan blade to rotate, to direct the air outside to inside circulation cavity and circulate between radiating copper pipe, the heat on radiating copper pipe is taken out to complete heat dissipation, it is favorable to improve the heat dissipation efficiency, while air can be filtered by filter screen and not be introduced into motor inside, to avoid damaging motor and facilitate later cleaning and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of brushless DC motors, and in particular to a high-efficiency heat dissipation device for the stator of a brushless DC motor. Background Technology

[0002] Although the development of brushless motors in my country is relatively recent, it has developed rapidly with the increasing maturity and perfection of the technology. It has been widely used in many fields such as model aircraft, medical devices, home appliances, and electric vehicles, and has formed a preliminary industrial chain in Shenzhen, Changsha, Shanghai and other places. In recent years, brushless motors have become a driving force for the rapid development of the model field.

[0003] Currently, most brushless motors use ventilation holes for heat dissipation. These holes are located on the outside of the motor housing, allowing air to circulate and dissipate heat during operation. While this method prevents overheating, the heat dissipation efficiency is relatively low, and airborne impurities can easily enter the motor, potentially damaging it and making cleaning and maintenance difficult. Utility Model Content

[0004] To overcome the problem that existing brushless motors rely on airflow between ventilation holes for heat dissipation, while this method can prevent overheating, the heat dissipation rate is poor and airborne impurities can easily enter the brushless motor, potentially damaging it and causing problems with subsequent cleaning and maintenance.

[0005] The technical solution of this utility model is: a high-efficiency heat dissipation device for a brushless DC motor stator, comprising a motor housing, a motor rotor connected to the inner side of the motor housing, a motor stator body connected to the outer side of the motor rotor, a heat-conducting component connected between the motor stator body and the motor housing, a heat dissipation copper pipe connected to the outer side of the heat-conducting component, and a fixing base connected to the left end of the heat-conducting component.

[0006] The motor housing has flow cavities at both ends, a motor base connected to the bottom side of the motor housing, and a filter screen connected to the inside of the flow cavities.

[0007] The heat-conducting assembly includes a heat-conducting sleeve connected to the outside of the motor stator body, a heat-conducting groove formed on the outside of the heat-conducting sleeve, and a reinforcing base fixedly connected to the lower end of the heat-conducting sleeve.

[0008] Preferably, the heat-conducting sleeve is made of copper and has a U-shaped structure, the reinforcing base has an arc-shaped structure, the outer side of the reinforcing base has a fastening groove, and the inner side of the fastening groove has an internal thread.

[0009] Preferably, the fixed base is provided with a connecting sleeve at one end near the reinforcing base, the inner side of the connecting sleeve is provided with connecting threads, and the size and shape of the connecting sleeve match the fastening groove.

[0010] Preferably, the inner side of the flow cavity is provided with a movable hole and a through hole. Several through holes are arranged in a ring at equal intervals, and the size and shape of the through holes match the heat dissipation copper pipe. A fixing bracket is provided at the right end of the motor housing.

[0011] Preferably, the motor rotor is provided with motor shafts at both ends, the motor shafts are respectively connected to the inner side of the movable hole and the left end of the fixed frame through bearings, and fan blades are provided on the outer side of the motor shafts, the fan blades being located between the flow cavity and the fixed frame.

[0012] The beneficial effects of this utility model are:

[0013] 1. When this utility model is in use, when the motor rotor and motor shaft rotate, the heat generated on the outside of the motor stator body is conducted to the heat dissipation copper pipe through the heat-conducting sleeve of the copper material. Then the motor shaft drives the fan blades to rotate, thereby guiding the air on the outside to the inside of the circulation cavity and circulating between the heat dissipation copper pipes, carrying away the heat on the heat dissipation copper pipes to complete the heat dissipation. This is beneficial to improving the heat dissipation efficiency. At the same time, the air can be filtered through the filter screen and will not be introduced into the motor, thus avoiding damage to the motor and facilitating later cleaning and maintenance.

[0014] 2. This utility model can improve the thermal conductivity through three sets of heat-conducting sleeves. Moreover, during the disassembly and assembly process, the fixed base can be rotated to facilitate disassembly or engagement with the fastening groove, thereby facilitating quick disassembly and assembly and fixing, improving the convenience of disassembly and assembly and the stability of use. With the action of the through hole, it is convenient for the heat dissipation copper pipe to be inserted and engaged, which is convenient for installation and subsequent disassembly and cleaning. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the present utility model.

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the motor housing of this utility model;

[0017] Figure 3 The diagram shown is an exploded three-dimensional structural diagram of the heat-conducting component and the fixing base of this utility model;

[0018] Figure 4 The diagram shown is a three-dimensional structural diagram of the connection between the motor rotor and stator of this utility model.

[0019] Figure 5 The diagram shown is a front view cross-sectional view of the thermal conductive component of this utility model.

[0020] Figure 6 The diagram shown is a right-side view of the structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Motor housing; 2. Motor rotor; 3. Motor stator body; 4. Heat-conducting component; 5. Heat dissipation copper pipe; 6. Fixing base; 101. Flow chamber; 102. Motor base; 103. Filter screen; 401. Heat-conducting sleeve; 402. Heat-conducting groove; 403. Reinforcing base; 4031. Fastening groove; 4032. Internal thread; 601. Connecting sleeve; 6011. Connecting thread; 1011. Movable hole; 1012. Through hole; 1013. Fixing bracket;

[0022] 301, motor shaft; 3011, fan blade. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] A high-efficiency heat dissipation device for the stator of a brushless DC motor, based on Figures 1-6 As shown, it includes a motor housing 1, a motor rotor 2 connected to the inside of the motor housing 1, a motor stator body 3 connected to the outside of the motor rotor 2, a heat-conducting assembly 4 connected between the motor stator body 3 and the motor housing 1, a heat dissipation copper pipe 5 connected to the outside of the heat-conducting assembly 4, and a fixing seat 6 connected to the left end of the heat-conducting assembly 4.

[0025] The motor housing 1 has flow chambers 101 at both ends, a motor base 102 connected to the bottom side of the motor housing 1, and a filter screen 103 connected to the inside of the flow chambers 101.

[0026] The heat-conducting component 4 includes a heat-conducting sleeve 401 connected to the outside of the motor stator body 3, a heat-conducting groove 402 opened on the outside of the heat-conducting sleeve 401, and a reinforcing base 403 fixedly connected to the lower end of the heat-conducting sleeve 401.

[0027] according to Figures 3-5 As shown, the heat-conducting sleeve 401 is made of copper and has a U-shaped structure. The reinforcing base 403 has an arc-shaped structure. The outer side of the reinforcing base 403 is provided with a fastening groove 4031, and the inner side of the fastening groove 4031 is provided with an internal thread 4032.

[0028] according to Figures 3-5 As shown, a connecting sleeve 601 is provided at one end of the fixed base 6 near the reinforcing base 403. The inner side of the connecting sleeve 601 is provided with a connecting thread 6011, and the size and shape of the connecting sleeve 601 match the fastening groove 4031.

[0029] It should be noted that during use, when the motor rotor 2 and motor shaft 301 rotate, the heat generated on the outside of the motor stator body 3 is conducted to the heat dissipation copper pipe 5 through the copper heat-conducting sleeve 401. Subsequently, the motor shaft 301 drives the fan blade 3011 to rotate, thereby guiding the air from the outside to the inside of the flow cavity 101 and circulating between the heat dissipation copper pipes 5, carrying away the heat on the heat dissipation copper pipes 5 to complete the heat dissipation. This is beneficial to improving the heat dissipation efficiency. At the same time, the air can be filtered by the filter screen 103 and will not be introduced into the motor, thus avoiding damage to the motor and facilitating later cleaning and maintenance. Moreover, the three sets of heat-conducting sleeves 401 can improve the thermal conductivity. During disassembly and assembly, the fixed seat 6 can be rotated to easily detach or engage with the fastening groove 4031, thereby facilitating quick disassembly and assembly and fixing, improving the convenience of disassembly and assembly and the stability of use.

[0030] according to Figures 1-6 As shown, the inner side of the flow cavity 101 is provided with an movable hole 1011 and a through hole 1012. Several through holes 1012 are arranged in a ring at equal intervals, and the size and shape of the through holes 1012 match the heat dissipation copper pipe 5. A fixing bracket 1013 is provided at the right end of the motor housing 1.

[0031] according to Figures 4-5 As shown, motor shafts 301 are provided at both ends of the motor rotor 2. The motor shafts 301 are connected to the inner side of the movable hole 1011 and the left end of the fixed frame 1013 respectively through bearings. Fan blades 3011 are provided on the outer side of the motor shafts 301, and the fan blades 3011 are located between the flow cavity 101 and the fixed frame 1013.

[0032] It should be noted that during the rotation of the motor rotor 2, the motor shaft 301 and the fan blade 3011 are driven to rotate, which facilitates driving and air circulation through the fan blade 3011. Furthermore, the fixed bracket 1013 helps to improve the stability of the motor shaft 301 during driving. Additionally, the through hole 1012 facilitates the insertion and engagement of the heat dissipation copper pipe 5, making installation and subsequent disassembly and cleaning easier.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A high-efficiency heat dissipation device for the stator of a brushless DC motor, characterized in that: It includes a motor housing (1), a motor rotor (2) connected to the inside of the motor housing (1), a motor stator body (3) connected to the outside of the motor rotor (2), a heat-conducting component (4) connected between the motor stator body (3) and the motor housing (1), a heat dissipation copper pipe (5) connected to the outside of the heat-conducting component (4), and a fixing seat (6) connected to the left end of the heat-conducting component (4). The motor housing (1) has flow chambers (101) at both ends, a motor base (102) connected to the bottom side of the motor housing (1), and a filter screen (103) connected to the inside of the flow chambers (101); The heat-conducting component (4) includes a heat-conducting sleeve (401) connected to the outside of the motor stator body (3), a heat-conducting groove (402) opened on the outside of the heat-conducting sleeve (401), and a reinforcing base (403) fixedly connected to the lower end of the heat-conducting sleeve (401).

2. The high-efficiency heat dissipation device for the stator of a brushless DC motor according to claim 1, characterized in that: The heat-conducting sleeve (401) is made of copper and has a U-shaped structure. The reinforcing base (403) has an arc-shaped structure. The outer side of the reinforcing base (403) is provided with a fastening groove (4031) and the inner side of the fastening groove (4031) is provided with an internal thread (4032).

3. The high-efficiency heat dissipation device for the stator of a brushless DC motor according to claim 1, characterized in that: The fixed base (6) is provided with a connecting sleeve (601) at one end near the reinforcing base (403). The inner side of the connecting sleeve (601) is provided with a connecting thread (6011), and the size and shape of the connecting sleeve (601) match the fastening groove (4031).

4. The high-efficiency heat dissipation device for the stator of a brushless DC motor according to claim 3, characterized in that: The inner side of the flow cavity (101) is provided with a movable hole (1011) and a through hole (1012). Several through holes (1012) are arranged in a ring at equal intervals, and the size and shape of the through holes (1012) match the heat dissipation copper pipe (5). A fixing bracket (1013) is provided at the right end of the motor housing (1).

5. The high-efficiency heat dissipation device for the stator of a brushless DC motor according to claim 4, characterized in that: The motor rotor (2) has motor shafts (301) at both ends. The motor shafts (301) are connected to the inner side of the movable hole (1011) and the left end of the fixed frame (1013) respectively by bearings. The outer side of the motor shaft (301) is provided with fan blades (3011), which are located between the flow cavity (101) and the fixed frame (1013).

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