Novel motor capable of improving heat dissipation capability
By introducing multi-layer heat dissipation structures such as arc-shaped heat dissipation fins, cooling fans and cooling fans into the motor, the problem of insufficient heat dissipation of high-speed motors is solved, and temperature control and stable motor operation are achieved.
Patent Information
- Application Number
- CN202323519350.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-22
AI Technical Summary
High-speed motors generate a lot of heat when starting, and the heat dissipation ability of traditional motors is insufficient, resulting in too high the motor temperature and it is difficult to meet the heat dissipation needs.
A new motor is designed, including arc-shaped heat dissipation fins, cooling fans, heat dissipation fans and air collecting covers, which improves heat dissipation efficiency through thermal radiation, conduction and air duct structures to ensure that the temperature of the controller and magnets is within a reasonable range.
It effectively extends the service life of the motor, avoids magnet demagnetization, ensures the smooth operation of the motor, accelerates heat dissipation through the multi-layer heat dissipation structure, and reduces the temperature.
Smart Images
Figure CN222147335U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a driving device for a dust collector, in particular to a motor. Background Art
[0002] In order to improve the vacuuming effect, a high-speed motor is used in a vacuum cleaner. However, a high-speed motor will generate a lot of heat when it is started, which will cause the motor temperature to be too high. Traditional motors generally include a shell with a stator and a rotor installed in the shell. The heat is dissipated by natural heat dissipation, which is difficult to meet the heat dissipation needs. Summary of the invention
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a novel motor with improved heat dissipation capability.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A new type of motor with improved heat dissipation capacity comprises an end cover, a stator and a rotor installed at the center of the stator, the stator is fixedly mounted on the end cover by a bracket, an arc-shaped heat dissipation fin for cooling a controller is installed on the upper side of the bracket, and a cooling fan is installed on the rotor above the arc-shaped heat dissipation fin; a heat dissipation fan for dissipating heat of the stator and rotor is installed at the lower end of the rotor, and an air collecting cover that wraps the arc-shaped heat dissipation fin is also installed on the upper side of the end cover, and an air duct outlet for cooling is formed between the lower end of the air collecting cover and the end cover.
[0006] A heat sink is installed on the bracket, the arc-shaped heat sink fins are arranged on the top surface of the heat sink, the controller is installed on the bottom surface of the heat sink, and the first heat dissipation duct is formed between two adjacent arc-shaped heat sink fins and the top surface of the heat sink.
[0007] A through hole for passing the rotor is provided at the center of the heat sink.
[0008] The upper end of the end cover is provided with a mounting portion, and the bracket is fixedly mounted on the mounting portion.
[0009] A concave cavity is arranged on the top surface of the end cover, and the heat dissipation fan is installed in the concave cavity.
[0010] The heat dissipation fan includes a fixed sleeve fixed on the rotor, a bottom plate is provided at the lower end of the fixed sleeve, the fixed sleeve is connected to the bottom plate through an arc portion, a plurality of vertical air duct plates are arranged circumferentially on the bottom plate, and two adjacent air duct plates are surrounded by the bottom plate and the arc portion to form a second heat dissipation air duct.
[0011] The bracket is provided with a buckle part, the air collecting cover is provided with a buckle hole corresponding to the buckle part, and the buckle part is buckled in the buckle hole.
[0012] A first air inlet is arranged at the end of the air collecting cover.
[0013] An impeller cover is installed on the lower side of the end cover, an impeller is installed on the inner side of the impeller cover at the lower end of the rotor, a second air inlet is arranged at the center of the impeller cover, an air outlet is arranged on the end cover, and an air outlet channel connected to the inside of the impeller cover is arranged in the air outlet part.
[0014] The beneficial effects of the utility model are as follows: the stator of the utility model is fixedly mounted on the end cover by a bracket, an arc-shaped heat sink fin for cooling the controller is mounted on the upper side of the bracket, and a cooling fan is mounted on the rotor above the arc-shaped heat sink fin; a heat sink fan for heat dissipation of the stator and rotor is mounted on the lower end of the rotor, and an air collecting cover wrapping the arc-shaped heat sink fin is also mounted on the upper side of the end cover, and an air duct outlet for cooling is formed between the lower end of the air collecting cover and the end cover, and the heat generated by the controller is transferred to the arc-shaped heat sink through thermal radiation, and the cooling fan presses the air downward toward the arc-shaped heat sink and flows to both sides along the arc-shaped heat sink, so that the heat generated by the controller is conducted downward, ensuring that the temperature of the controller is within a reasonable range and effectively extending the service life of the controller; during the operation of the motor, the rotor and the stator generate heat, and the heat dissipation is accelerated through the heat dissipation fan, so that the temperature of the magnet is not too high, the demagnetization of the magnet is delayed, and the smooth operation of the motor is ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 It is a structural diagram of the utility model;
[0017] Figure 2 It is an exploded view of the utility model;
[0018] Figure 3 It is a structural diagram of the heat sink;
[0019] Figure 4 This is a structural diagram of the cooling fan. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0021] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.
[0022] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.
[0023] Reference Figures 1 to 4 A novel motor with improved heat dissipation capacity comprises an end cover 1, a stator 2 and a rotor 3 installed at the center of the stator 2, wherein the stator 2 is fixedly installed on the end cover 1 through a bracket 5, an arc-shaped heat dissipation fin 6 for controller cooling is installed on the upper side of the bracket 5, and a cooling fan 7 is installed on the rotor 3 above the arc-shaped heat dissipation fin 6; a heat dissipation fan 12 for heat dissipation of the stator 2 and the rotor 3 is installed at the lower end of the rotor 3, and an air collecting cover 8 for wrapping the arc-shaped heat dissipation fin 6 is also installed on the upper side of the end cover 1, and the air collecting cover 8 An air duct outlet 9 for cooling is formed between the lower end and the end cover 1. The heat generated by the controller is transferred to the arc-shaped heat sink through thermal radiation. The cooling fan presses the air downward toward the arc-shaped heat sink and flows to both sides along the arc-shaped heat sink, so that the heat generated by the controller is conducted downward, ensuring that the temperature of the controller is within a reasonable range and effectively extending the service life of the controller. During the operation of the motor, the rotor and stator generate heat, which is accelerated by the cooling fan to dissipate the heat, so that the temperature of the magnet (sintered NdFeB) is not too high, delaying the demagnetization of the magnet, and ensuring the smooth operation of the motor.
[0024] The blades of the cooling fan 7 adopt a curved surface structure, which guides the wind smoothly and has low noise. At the same time, the contact area with the air is increased, which can further improve the cooling and heat dissipation capabilities.
[0025] A heat sink 10 is installed on the bracket 5, the arc-shaped heat sink fins 6 are arranged on the top surface of the heat sink 10, the controller is installed on the bottom surface of the heat sink 10, and a first heat dissipation duct 11 is formed between two adjacent arc-shaped heat sink fins 6 and the top surface of the heat sink 10. The shell of the heat sink 10 is made of aluminum material, which is light in weight and has a fast heat conduction speed. The arc-shaped heat sink fins 6 are fixed to the top surface of the shell of the heat sink 10 by screws.
[0026] A through hole for passing the rotor 3 is disposed at the center of the heat sink 10 .
[0027] When the cooling fan 7 rotates, a part of the generated airflow flows outward along the first heat dissipation duct 11, passes through the air duct between the wind collecting cover 8 and the stator 2, flows downward, and is finally discharged through the air duct outlet 9, thereby achieving the effect of cooling the controller; the other part of the airflow flows inward along the first heat dissipation duct 11, flows to the upper surface of the stator 2 through the through hole, and since the air duct between the wind collecting cover 8 and the stator 2 is a straight-line structure air duct, the through hole, and then the air duct between the bottom surface of the heat sink 10 and the upper surface of the stator 2 is a tortuous air duct, and the hot air flow rate of the straight-line structure air duct is faster than that of the tortuous air duct, forming a negative pressure, which will draw the hot air from the tortuous air duct and gather it with the hot air in the straight-line structure air duct, and finally all of them are discharged from the air duct outlet 9.
[0028] The width of the first heat dissipation duct 11 gradually decreases from the outside to the center, thereby increasing the proportion of airflow flowing to the outside and reducing the proportion of airflow flowing to the inside.
[0029] A mounting portion 4 is disposed at the upper end of the end cover 1 , and the bracket 5 is fixedly mounted on the mounting portion 4 .
[0030] A concave cavity is provided on the top surface of the end cover 1, and the cooling fan 12 is installed in the concave cavity. When the cooling fan conducts the heat generated by the controller downward, part of the hot air will gather in the concave cavity, causing the temperature of the stator 2 and the rotor 3 to rise, resulting in demagnetization of the magnet. The cooling fan rotates to form an outward airflow, and at the same time takes away the part of the heat, moves upward along the side wall of the concave cavity, and is finally discharged through the air duct outlet 9, so that the temperature of the stator 2 and the rotor 3 drops, and the temperature of the magnet is further dropped to avoid demagnetization of the magnet.
[0031] The cooling fan 12 includes a fixed sleeve 13 fixed on the rotor 3, a bottom plate 14 is provided at the lower end of the fixed sleeve, the fixed sleeve 13 is connected to the bottom plate 14 through an arc portion 15, a plurality of vertical air duct plates 16 are arranged circumferentially on the bottom plate 14, and two adjacent air duct plates 16 are surrounded by the bottom plate 14 and the arc portion 15 to form a second cooling air duct 17.
[0032] The bracket 5 is provided with a buckle portion 18 , and the air collecting cover 8 is provided with a buckle hole 19 corresponding to the buckle portion 18 , and the buckle portion 18 is buckled in the buckle hole 19 .
[0033] A first air inlet 23 is disposed at the end of the air collecting cover 8 .
[0034] An impeller cover 20 is installed on the lower side of the end cover 1, and an impeller 21 is installed on the inner side of the impeller cover 20 at the lower end of the rotor 3. A second air inlet is provided at the center of the impeller cover 20. An air outlet portion 22 is provided on the end cover 1, and an air outlet channel connected to the inside of the impeller cover 20 is provided in the air outlet portion 22. The impeller 21 is used for the dust collection work requirements of the vacuum cleaner.
[0035] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0036] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0037] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A novel motor with improved heat dissipation capability, comprising an end cover (1), a stator (2), and a rotor (3) mounted at the center of the stator (2), characterized in that The stator (2) is fixedly mounted on the end cover (1) via a bracket (5); an arc-shaped heat dissipation fin (6) for cooling the controller is mounted on the upper side of the bracket (5); a cooling fan (7) is mounted on the rotor (3) above the arc-shaped heat dissipation fin (6); a heat dissipation fan (12) for dissipating heat from the stator (2) and the rotor (3) is mounted on the lower end of the rotor (3); an air collecting cover (8) for wrapping the arc-shaped heat dissipation fin (6) is also mounted on the upper side of the end cover (1); an air duct outlet (9) for cooling is formed between the lower end of the air collecting cover (8) and the end cover (1).
2. The motor according to claim 1, characterized in that A heat sink (10) is mounted on the bracket (5), the arc-shaped heat sink fins (6) are arranged on the top surface of the heat sink (10), the controller is mounted on the bottom surface of the heat sink (10), and a first heat sink duct (11) is formed between two adjacent arc-shaped heat sink fins (6) and the top surface of the heat sink (10).
3. The motor according to claim 2, characterized in that A through hole for passing the rotor (3) is provided at the center of the heat sink (10).
4. The motor according to claim 1, characterized in that The upper end of the end cover (1) is provided with a mounting portion (4), and the bracket (5) is fixedly mounted on the mounting portion (4).
5. The motor according to claim 1, characterized in that The top surface of the end cover (1) is provided with a concave cavity, and the heat dissipation fan (12) is installed in the concave cavity.
6. The motor according to claim 1, characterized in that The heat dissipation fan (12) comprises a fixed sleeve (13) fixed on the rotor (3), a bottom plate (14) being provided at the lower end of the fixed sleeve, the fixed sleeve (13) being connected to the bottom plate (14) via an arc-shaped portion (15), a plurality of vertical air duct plates (16) being arranged circumferentially on the bottom plate (14), and two adjacent air duct plates (16) being enclosed by the bottom plate (14) and the arc-shaped portion (15) to form a second heat dissipation air duct (17).
7. The motor according to claim 1, characterized in that The bracket (5) is provided with a buckle portion (18), the air collecting cover (8) is provided with a buckle hole (19) corresponding to the buckle portion (18), and the buckle portion (18) is buckled in the buckle hole (19).
8. The motor according to claim 1, characterized in that A first air inlet (23) is provided at the end of the air collecting cover (8).
9. The motor according to claim 1, characterized in that An impeller cover (20) is mounted on the lower side of the end cover (1); an impeller (21) is mounted on the lower end of the rotor (3) located inside the impeller cover (20); a second air inlet is provided at the center of the impeller cover (20); an air outlet portion (22) is provided on the end cover (1); an air outlet passage communicating with the interior of the impeller cover (20) is provided in the air outlet portion (22).