Heat dissipation structure of external rotor ceiling fan motor

Abstract

The utility model discloses a heat dissipation structure of an outer rotor ceiling fan motor, and belongs to the technical field of heat dissipation of the outer rotor ceiling fan motor, the heat dissipation structure comprises a fixing plate, an upper end cover, a lower end cover and a fixing shaft, the top of the fixing plate is provided with the upper end cover, the lower end cover is arranged above the upper end cover, and the fixing shaft is arranged between the upper end cover and the lower end cover. A shell wind scooper is arranged on the outer side of the upper end cover and the outer side of the lower end cover, and a gas flowing channel is arranged in the shell wind scooper. The motor is novel in design and ingenious in device, the air flow channel is arranged in the shell wind scooper, so that when the motor rotates, air flow enters from the air inlet and then takes away heat on the surface of the rotor after passing through the air flow channel, cooling is achieved, the shape and layout of the air inlet channel are further optimized on the shell wind scooper, and cooling efficiency is improved. And the unique air inlet channel design is adopted, so that the airflow resistance is reduced, and the practicability of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the heat dissipation field of an outer rotor ceiling fan motor. BACKGROUND

[0002] In order to meet the requirements of high power density and light weight, the research and development of outer rotor motors are increasingly strong. With the requirement of higher power density, the unit volume heat load of the outer rotor motor is getting larger and larger, which causes excessive temperature rise of the motor, and leads to the decline of the performance and service life of the motor. Therefore, the research on the temperature control technology of the motor is particularly crucial.

[0003] At present, the outer rotor ceiling fan motor generally adopts natural heat dissipation or simple heat dissipation design, and the heat dissipation effect is poor, which easily leads to excessive temperature rise of the motor and affects the service life and performance stability.

[0004] In the prior art, the heat dissipation area is increased by arranging heat dissipation fins on the motor shell, or forced convection heat dissipation is adopted by using a fan. However, for the high-speed rotating outer rotor motor, the heat dissipation efficiency is still limited, and the structure is complex and the cost is high.

[0005] Therefore, the prior art has the defects of low heat dissipation efficiency, complex structure, high cost and difficulty in meeting the heat dissipation requirements of the high-speed rotating outer rotor motor.

[0006] Therefore, the application provides an outer rotor ceiling fan motor heat dissipation structure. CONTENT OF THE INVENTION

[0007] The outer rotor ceiling fan motor heat dissipation structure provided by the application solves the problems in the background technology. The gas flow channel is arranged in the shell air guide cover, so that when the motor rotates, the air flow enters from the air inlet, then passes through the gas flow channel, and carries away the heat on the surface of the rotor to realize cooling. The shape and layout of the air inlet channel on the shell air guide cover are further optimized to increase the air inlet amount and ensure that the air flow can uniformly flow through the surface of the rotor. The unique air inlet channel design reduces air resistance and greatly improves the practicability of the device.

[0008] In order to achieve the above purpose, the application adopts the following technical scheme:

[0009] The outer rotor ceiling fan motor heat dissipation structure comprises a fixed plate, an upper end cover, a lower end cover and a fixed shaft. The top of the fixed plate is provided with the upper end cover. The lower end cover is arranged above the upper end cover. The fixed shaft is arranged between the upper end cover and the lower end cover. The outer side of the upper end cover and the lower end cover is provided with a shell air guide cover. The shell air guide cover is provided with a gas flow channel.

[0010] As a preferred implementation, the gas flow channel comprises an air inlet and an air outlet, the air inlet is arranged below the gas flow channel in the shell air baffle, and the air outlet is arranged above the gas flow channel in the shell air baffle.

[0011] By arranging the air inlet and the air outlet at the upper and lower ends of the gas flow channel in the shell air baffle, the air inlet is used for the air flow to flow to the gas flow channel, and the air flow entering the gas flow channel carries out the heat generated by the rotor from the air outlet, thereby improving the practicability of the device.

[0012] As a preferred implementation, the air inlet comprises a first inclined surface, which is designed from large to small from bottom to top;

[0013] By arranging the first inclined surface, the air inlet port diameter of the air inlet is larger than the air outlet port diameter, which can increase the air inlet amount of external air flow, thereby improving the practicability of the device.

[0014] As a preferred implementation, the air outlet comprises a second inclined surface, a third inclined surface and an air outlet channel, and the air outlet channel is arranged between the gas flow channel and the air outlet;

[0015] By arranging the third inclined surface, the air outlet port diameter of the air outlet is smaller than the air outlet port diameter, which can quickly and uniformly carry out the heat generated by the rotor in the gas flow channel, thereby improving the practicability of the device.

[0016] As a preferred implementation, the second inclined surface is designed from large to small from bottom to top, and the third inclined surface is designed from small to large from bottom to top;

[0017] By arranging the second inclined surface, it can ensure that the top end of the gas flow channel is not easy to store heat when the air flow carries the heat generated by the rotor in the gas flow channel, thereby improving the practicability of the device.

[0018] As a preferred implementation, the first bearing is arranged on the fixed shaft and located in the upper end cover, and the second bearing is arranged on the fixed shaft and located in the lower end cover;

[0019] By arranging the first bearing and the second bearing on the fixed shaft, the first bearing and the second bearing are respectively locked on the upper end cover and the lower end cover, the frictional resistance between the fixed shaft and the upper end cover and the lower end cover is reduced by setting the bearing, the operation efficiency and service life of the motor are improved, at the same time, the arrangement of the bearing provides convenience for subsequent assembly and maintenance, thereby improving the practicability of the device.

[0020] As a preferred implementation, the stator is assembled on the fixed shaft and located between the upper end cover and the lower end cover, and the rotor is arranged between the upper end cover and the lower end cover and located outside the stator;

[0021] By installing the fixed shaft between the upper end cover and the lower end cover for enhancing the stability of the structure and the convenience of assembly, the upper end cover is sleeved on the fixed shaft, the stator is assembled on the fixed shaft, and the upper end cover, the lower end cover and the stator are tightly connected together through the fixed shaft to form a stable overall structure, thereby improving the practicability of the device.

[0022] As a preferred embodiment, a plurality of blade mounting plates are fixedly connected to the upper end cover, and a plurality of mounting holes are formed in each blade mounting plate.

[0023] By arranging the blade mounting plates and the mounting holes, the mounting holes are formed in the blade mounting plates for mounting the fan blades, thereby improving the practicability of the device.

[0024] The beneficial effects of the present application are as follows:

[0025] 1. The heat dissipation structure of the outer rotor ceiling fan motor, by arranging the gas flow channel in the shell air guide cover, the air flow enters from the air inlet, then passes through the gas flow channel, and carries away the heat on the surface of the rotor, so as to realize cooling. The shape and layout of the air inlet channel on the shell air guide cover are further optimized to improve the air inlet amount and ensure that the air flow can uniformly flow through the surface of the rotor. A unique air inlet channel design is adopted to reduce air resistance, thereby greatly improving the practicability of the device.

[0026] 2. The heat dissipation structure of the outer rotor ceiling fan motor, by arranging the new heat dissipation structure including the air inlet channel and the gas flow channel, the heat on the surface of the rotor can be effectively carried away when the motor rotates, and uniform cooling is realized. At the same time, the optimized assembly method improves the stability of the structure and the convenience of assembly, further prolongs the service life of the outer rotor ceiling fan motor. Overall, the technical scheme has the advantages of high heat dissipation efficiency, simple structure, low cost and the like, and greatly improves the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is an internal schematic diagram of the device of the present application.

[0028] Fig. 2 It is an internal schematic diagram of the device of the present application.

[0029] Fig. 3 It is a partial schematic diagram of the device of the present application.

[0030] The figure label: 1, fixed plate; 2, upper end cover; 3, lower end cover; 4, first bearing; 5, second bearing; 6, stator; 7, rotor; 8, blade mounting plate; 9, mounting hole; 10, shell air deflector; 11, gas flow channel; 12, air inlet; 13, air outlet; 14, first slope; 15, second slope; 16, third slope; 17, air outlet channel; 18, fixed shaft. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0032] REFERENCE Figs. 1-3 A heat dissipation structure of an outer rotor ceiling fan motor, comprising a fixed plate 1, an upper end cover 2 and a lower end cover 3 and a fixed shaft 18, the top of the fixed plate 1 is provided with the upper end cover 2, the lower end cover 3 is arranged above the upper end cover 2, the fixed shaft 18 is arranged between the upper end cover 2 and the lower end cover 3, the outer side of the upper end cover 2 and the lower end cover 3 is provided with a shell air deflector 10, and the shell air deflector 10 is provided with a gas flow channel 11.

[0033] The gas flow channel 11 comprises an air inlet 12 and an air outlet 13, the air inlet 12 is arranged below the gas flow channel 11 in the shell air deflector 10, and the air outlet 13 is arranged above the gas flow channel 11 in the shell air deflector 10; by arranging the air inlet 12 and the air outlet 13 at the upper and lower ends of the gas flow channel 11 in the shell air deflector 10, the air inlet 12 is used for the wind direction to flow to the gas flow channel 11, and the airflow entering the gas flow channel 11 can take out the heat generated by the rotor 7 from the air outlet 13, thereby improving the practicability of the device.

[0034] The air inlet 12 comprises a first slope 14, which is designed from small to large from bottom to top; by arranging the first slope 14, the air inlet 12 is designed to have a larger air inlet diameter than an air outlet diameter, which can expand the air inlet amount of external airflow, thereby improving the practicability of the device.

[0035] The air outlet 13 comprises a second slope 15, a third slope 16 and an air outlet channel 17, and the air outlet channel 17 is arranged between the gas flow channel 11 and the air outlet 13; by arranging the third slope 16, the air outlet 13 is designed to have a smaller air outlet diameter than an air inlet diameter, which can uniformly take out the heat generated by the rotor 7 in the gas flow channel 11, thereby improving the practicability of the device.

[0036] The second inclined surface 15 is designed from large to small from bottom to top, and the third inclined surface 16 is designed from small to large from bottom to top; by arranging the second inclined surface 15, the top end of the gas flow channel 11 is not easy to store heat when the heat generated by the rotor 7 in the gas flow channel 11 is driven, thereby improving the practicability of the device.

[0037] The first bearing 4 is arranged on the fixed shaft 18 and located in the upper end cover 2, and the second bearing 5 is arranged on the fixed shaft 18 and located in the lower end cover 3; by arranging the first bearing 4 and the second bearing 5 on the fixed shaft 18, the first bearing 4 and the second bearing 5 are locked on the upper end cover 2 and the lower end cover 3 respectively, the frictional resistance between the fixed shaft 18 and the upper end cover 2 and the lower end cover 3 is reduced by arranging the bearings, the operation efficiency and service life of the motor are improved, at the same time, the arrangement of the bearings provides convenience for subsequent assembly and maintenance, thereby improving the practicability of the device.

[0038] The stator 6 is arranged on the fixed shaft 18 between the upper end cover 2 and the lower end cover 3, and the rotor 7 is arranged between the upper end cover 2 and the lower end cover 3 outside the stator 6; in order to enhance the stability and assembly convenience of the structure, the fixed shaft 18 is arranged between the upper end cover 2 and the lower end cover 3, the upper end cover 2 is sleeved on the fixed shaft 18, and the stator 6 is arranged on the fixed shaft 18, so that the upper end cover 2, the lower end cover 3 and the stator 6 are tightly connected together by the fixed shaft 18 to form a stable overall structure, thereby improving the practicability of the device.

[0039] A plurality of blade mounting plates 8 are fixedly connected to the upper end cover 2, and a plurality of mounting holes 9 are arranged on each blade mounting plate 8; by arranging the blade mounting plate 8 and the mounting hole 9, a plurality of mounting holes 9 are arranged on the blade mounting plate 8 for mounting fan blades, thereby improving the practicability of the device.

[0040] Working principle: the airflow of the air inlet 12 flows into the gas flow channel 11, by arranging the gas flow channel 11 in the shell air guide cover 10, when the motor rotates, the airflow enters from the air inlet 12, and then passes through the gas flow channel 11 to take away the heat on the surface of the rotor 7, thereby achieving cooling.

[0041] In order to enhance the stability and assembly convenience of the structure, the fixed shaft 18 is arranged between the upper end cover 2 and the lower end cover 3, the upper end cover 2 is sleeved on the fixed shaft 18, and the stator 6 is arranged on the fixed shaft 18, so that the upper end cover 2, the lower end cover 3 and the stator 6 are tightly connected together by the fixed shaft 18 to form a stable overall structure.

[0042] By installing the first bearing 4 and the second bearing 5 on the fixed shaft 18, the first bearing 4 and the second bearing 5 are locked on the upper end cover 2 and the lower end cover 3 respectively, the frictional resistance between the fixed shaft 18 and the upper end cover 2 and the lower end cover 3 is reduced by setting the bearings, the operation efficiency and the service life of the motor are improved, and at the same time, the setting of the bearings provides convenience for subsequent assembly and maintenance.

[0043] By further optimizing the shape and layout of the air inlet channel on the shell air baffle 10, the air inlet amount is improved and it is ensured that the airflow can flow uniformly through the surface of the rotor 7, and a unique air inlet channel design is adopted to reduce airflow resistance.

[0044] By setting the new heat dissipation structure including the air inlet channel and the gas flow channel 11, the heat on the surface of the rotor 7 can be effectively taken away when the motor rotates, uniform cooling is realized, and at the same time, the optimized assembly method improves the stability of the structure and the convenience of assembly, further prolongs the service life of the outer rotor 7 ceiling fan motor, and overall, the technical scheme has the advantages of high heat dissipation efficiency, simple structure, low cost and the like.

[0045] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A heat dissipation structure of an outer rotor ceiling fan motor comprising a fixing plate (1), an upper end cover (2) and a lower end cover (3) and a fixing shaft (18), characterized in that, The top of the fixed plate (1) is provided with an upper end cover (2), the lower end cover (3) is arranged above the upper end cover (2), the fixed shaft (18) is arranged between the upper end cover (2) and the lower end cover (3), the outer side of the upper end cover (2) and the lower end cover (3) is provided with a shell wind deflector (10), and the shell wind deflector (10) is provided with a gas flow channel (11).

2. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 1, wherein, The gas flow channel (11) comprises an air inlet (12) and an air outlet (13), the air inlet (12) is arranged below the gas flow channel (11) in the shell wind deflector (10), and the air outlet (13) is arranged above the gas flow channel (11) in the shell wind deflector (10).

3. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 2, wherein, The air inlet (12) comprises a first inclined surface (14), which is designed from large to small from bottom to top.

4. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 2, wherein The air outlet (13) comprises a second inclined surface (15), a third inclined surface (16) and an air outlet channel (17), and the air outlet channel (17) is arranged between the gas flow channel (11) and the air outlet (13).

5. A heat dissipating structure for an outer rotor ceiling fan motor according to claim 4, wherein The second inclined surface (15) is designed from large to small from bottom to top, and the third inclined surface (16) is designed from small to large from bottom to top.

6. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 1, wherein, The first bearing (4) is arranged on the fixed shaft (18) and in the upper end cover (2), and the second bearing (5) is arranged on the fixed shaft (18) and in the lower end cover (3).

7. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 1, wherein, The stator (6) is arranged on the fixed shaft (18) and between the upper end cover (2) and the lower end cover (3), and the rotor (7) is arranged between the upper end cover (2) and the lower end cover (3) and outside the stator (6).

8. The heat dissipation structure of an outer rotor ceiling fan motor according to claim 1, wherein, A plurality of blade mounting plates (8) are fixedly connected to the upper end cover (2), and a plurality of mounting holes (9) are formed in each blade mounting plate (8).

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