Motor shell with efficient heat conduction structure

Abstract

The utility model relates to the technical field of motor casings, and discloses a motor casing with a high-efficiency heat conduction structure, which comprises an inner casing mechanism, a stator and a rotor of a motor are arranged in the inner casing mechanism and are fixed by a front cover and a rear cover, and an outer casing mechanism is sleeved on the outer surface of the inner casing mechanism. A gap is reserved between the inner shell mechanism and the outer shell mechanism. According to the motor shell with the efficient heat conduction structure, the inner protection shell is arranged, the outer surface of the inner protection shell is fixedly connected with the plurality of heat dissipation fins to form an airflow channel, and the heat dissipation fins are covered by the outer protection shell, so that when a motor works, the inner protection shell absorbs heat firstly, and when the inner protection shell emits heat, the heat dissipation fins can be cooled; when the heat dissipation device is used, cold air flows towards the direction of hot air, so that the cold air enters the airflow channel and is sprayed out from the other end of the airflow channel to form convection, heat is brought out, and the effects of efficient heat dissipation and high safety are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor casings, and particularly to a motor casing with an efficient heat conduction structure. Background Technique

[0002] A motor casing is a casing used to install and protect the stator and rotor inside a motor. The motor stator is installed on the inner wall of the motor casing, and the rotor of the motor is installed between the motor rotors. By energizing, the stator of the motor generates magnetism to drive the rotation of the motor rotor.

[0003] When the motor is working, since the rotor does work and generates heat, in order to protect the motor, heat dissipation protection for the motor is required. The existing method is to set several fins for heat dissipation on the surface of the motor casing, so as to increase the heat dissipation area for heat dissipation. However, this heat dissipation method belongs to passive heat dissipation, and its heat dissipation effect is not obvious.

[0004] Chinese Patent Publication No.: CN 220629046 U discloses "A new energy motor casing with an efficient heat dissipation structure", including: an upper casing and a lower casing. One end of both the upper casing and the lower casing is provided with a heat dissipation groove. A clamping block is connected in the heat dissipation groove through a support rod. A protective net is fixedly installed on the side walls at the other ends of the upper casing and the lower casing. The upper casing and the lower casing are fixed together by bolts. A new energy motor is arranged inside the upper casing and the lower casing. A plurality of heat dissipation fins are evenly arranged on the outer side wall of the new energy motor. Liquid coolant pipes are arranged at the bottoms of adjacent two heat dissipation fins. The upper casing and the lower casing are fixedly installed together by bolts. The liquid outlet pipe and the liquid inlet pipe are both connected to an external coolant storage tank and a coolant pump, so that the coolant circulates in the liquid coolant pipes. The fan blades rotate synchronously with the new energy motor, and dissipate heat to the outer wall of the new energy motor and the heat dissipation fins, improving the heat dissipation capacity of the motor.

[0005] The above-mentioned existing technology uses a liquid cooling method to improve the heat dissipation of the motor, but there are the following problems:

[0006] Liquid cooling heat dissipation will greatly increase the weight and volume of the motor, and there will be a problem of liquid leakage in liquid cooling heat dissipation, thus making the motor at risk.

[0007] To solve the above problems, this application proposes a motor casing with an efficient heat conduction structure, which realizes the efficient heat dissipation of the motor through the principle of heat flow. Content of the Utility Model

[0008] The purpose of the utility model is to provide a motor casing with an efficient heat conduction structure to solve the problems raised in the above background technique.

[0009] To solve the above technical problems, the present utility model provides the following technical solutions: A motor housing with an efficient heat conduction structure, including an inner housing mechanism. The stator and rotor of the motor are installed inside the inner housing mechanism and fixed using a front cover and a rear cover. An outer housing mechanism is sleeved on the outer surface of the inner housing mechanism, and there is a gap between the inner housing mechanism and the outer housing mechanism;

[0010] The inner housing mechanism includes an inner protective shell. A number of equally spaced heat dissipation fins are fixedly connected to the outer surface of the inner protective shell. There is an air flow channel between the heat dissipation fins, and both ends of the air flow channel are through;

[0011] Both ends of the inner protective shell are provided with motor mounting holes;

[0012] The outer housing mechanism includes an outer protective shell. The inner wall of the outer protective shell is fixedly connected to the outer surface of the heat dissipation fins.

[0013] Preferably, the heat dissipation fins are rigid metal strips, and the length of the heat dissipation fins is equal to the length of the inner protective shell.

[0014] Preferably, one end of the heat dissipation fin is an inclined surface, and the area of the air flow channel formed by the inclined surface end of the heat dissipation fin is larger than the other side.

[0015] Preferably, the motor mounting holes are opened at the connection of the inner protective shell and the heat dissipation fins, and the motor mounting holes are circumferentially arrayed around the axis of the inner protective shell.

[0016] Preferably, a number of heat conduction grooves are provided on the outer surface of the outer protective shell, and the heat conduction grooves are equally spaced and circularly distributed on the outer surface of the outer protective shell.

[0017] Preferably, the diameter of the outer protective shell is adapted to the front cover and the rear cover of the motor, and the outer diameter of the heat conduction grooves is larger than the diameter of the front cover and the rear cover of the motor.

[0018] Preferably, one end of the inclined surface of the heat dissipation fin is close to the motor shaft.

[0019] Compared with the prior art, the beneficial effects achieved by the present utility model are:

[0020] First, by setting the inner protective shell and fixedly connecting a number of heat dissipation fins on the outer surface of the inner protective shell to form an air flow channel, and covering the heat dissipation fins with the outer protective shell. When the motor is working, the inner protective shell will first absorb heat. When the inner protective shell gets hot, cold air will flow towards the direction of hot air. Therefore, the cold air will enter the inside of the air flow channel and be ejected from the other end of the air flow channel to form a convection, taking the heat out, achieving the effects of efficient heat dissipation and high safety.

[0021] Second, one end of the heat dissipation fin of the present utility model is a bevel, and the air flow channel area formed by the bevel end of the heat dissipation fin is larger than the other side, resulting in the intake cross-section of the air flow channel being larger than the outlet cross-section. When cold air enters the interior of the air flow channel, the cross-section of the air flow will gradually decrease, thereby increasing the air flow velocity and achieving the effect of further improving the heat dissipation rate. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the present utility model;

[0023] Figure 2 It is a side view of the structure of the present utility model;

[0024] Figure 3 It is a schematic structural diagram of the inner shell mechanism of the present utility model;

[0025] Figure 4 It is a schematic structural diagram of the present utility model after the motor is installed.

[0026] Among them: 1. Inner shell mechanism; 101. Inner protective shell; 102. Heat dissipation fin; 103. Air flow channel; 104. Motor mounting hole; 2. Outer shell mechanism; 201. Outer protective shell; 202. Heat conduction groove. Specific Embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , a motor housing with an efficient heat conduction structure, including an inner shell mechanism 1. The stator and rotor of the motor are installed inside the inner shell mechanism 1 and fixed with a front cover and a rear cover. An outer shell mechanism 2 is sleeved on the outer surface of the inner shell mechanism 1, and there is a gap between the inner shell mechanism 1 and the outer shell mechanism 2;

[0029] The inner shell mechanism 1 includes an inner protective shell 101. A plurality of equally spaced heat dissipation fins 102 are fixedly connected to the outer surface of the inner protective shell 101. There is an air flow channel 103 between the heat dissipation fins 102, and both ends of the air flow channel 103 are through;

[0030] Motor mounting holes 104 are opened at both ends of the inner protective shell 101;

[0031] The outer shell mechanism 2 includes an outer protective shell 201. The inner wall of the outer protective shell 201 is fixedly connected to the outer surface of the heat dissipation fin 102.

[0032] Through the above technical solution, an inner protective shell 101 is provided, and a plurality of heat dissipation fins 102 are fixedly connected to the outer surface of the inner protective shell 101 to form an air flow channel 103, and the heat dissipation fins 102 are covered by an outer protective shell 201. When the motor is working, the inner protective shell 101 will first absorb heat. When the inner protective shell 101 gets hot, cold air will flow towards the direction of hot air. Therefore, the cold air will enter the inside of the air flow channel 103 and be ejected from the other end of the air flow channel 103 to form a convection, taking out the heat, achieving the effects of efficient heat dissipation and high safety;

[0033] The principle is as follows: Cold air flows towards warm air because both hot low-pressure and cold high-pressure air currents flow from high pressure to low pressure. The reason for the air flow is the temperature difference generated by uneven heating. Hot air is light and rises, and cold air flows in to supplement it, forming a convection, thereby driving the air to circulate rapidly to achieve the heat dissipation effect;

[0034] Moreover, the formed air flow channel 103 can serve as a buffer space. When the motor is violently impacted, the outer protective shell 201 can deform to reduce the impact force on the main equipment inside the motor.

[0035] Specifically, the heat dissipation fins 102 are rigid metal strips, and the length of the heat dissipation fins 102 is equal to the length of the inner protective shell 101.

[0036] Through the above technical solution, the heat dissipation fins 102 are set as metal strips, so that the heat dissipation fins 102 have good thermal conductivity and stable support for the outer protective shell 201, to prevent the outer protective shell 201 from being easily deformed during use.

[0037] Specifically, one end of the heat dissipation fins 102 is an inclined surface, and the area of the air flow channel 103 formed by the inclined surface end of the heat dissipation fins 102 is larger than the other side.

[0038] Through the above technical solution, one end of the heat dissipation fins 102 is an inclined surface, and the area of the air flow channel 103 formed by the inclined surface end of the heat dissipation fins 102 is larger than the other side, resulting in the intake cross-section of the air flow channel 103 being larger than the outlet cross-section. When the cold air enters the inside of the air flow channel 103, the cross-section of the air flow will gradually decrease, thereby increasing the air flow velocity and achieving the effect of further improving the heat dissipation rate.

[0039] Specifically, the motor mounting holes 104 are opened at the connection of the inner protective shell 101 and the heat dissipation fins 102, and the motor mounting holes 104 are circumferentially arrayed around the axis of the inner protective shell 101.

[0040] Through the above technical solution, the motor mounting hole 104 is provided at the connection of the inner protective case 101 and the heat dissipation fins 102, so that it is not necessary for the thickness of the inner protective case 101 to be greater than the thickness of the bolt, thereby reducing the weight of the inner protective case 101 and thus reducing the weight of the entire device.

[0041] Specifically, a plurality of heat conduction grooves 202 are provided on the outer surface of the outer protective case 201, and the heat conduction grooves 202 are evenly and circularly distributed on the outer surface of the outer protective case 201.

[0042] Through the above technical solution, the purpose of providing the heat conduction grooves 202 is to further improve the heat dissipation performance of the outer protective case 201. When heat accumulates inside the air flow channel 103, part of the heat will be dissipated through the outer protective case 201, and the function of the heat conduction grooves 202 is to increase the contact area between the outer surface of the outer protective case 201 and the air, thereby improving the heat dissipation performance.

[0043] Specifically, the diameter of the outer protective case 201 is adapted to the front cover and the rear cover of the motor, and the outer diameter of the heat conduction grooves 202 is greater than the diameter of the front cover and the rear cover of the motor.

[0044] Through the above technical solution, the sizes of the outer protective case 201 and the heat conduction grooves 202 are set so that after the motor is installed, the front cover and the rear cover of the motor will not block the air flow channel 103, so as to realize the normal circulation of air.

[0045] Specifically, one end of the inclined surface of the heat dissipation fin 102 is close to the motor shaft.

[0046] Through the above technical solution, the direction of the inclined surface of the heat dissipation fin 102 is set, so that when air circulates, it can effectively drive the air in the direction of the motor shaft, and play a certain role in dissipating heat from the equipment at the end of the motor shaft.

[0047] During use, by providing the inner protective case 101 and fixedly connecting a plurality of heat dissipation fins 102 to the outer surface of the inner protective case 101 to form an air flow channel 103, and covering the heat dissipation fins 102 with the outer protective case 201. When the motor is working, the inner protective case 101 will first absorb heat. When the inner protective case 101 gets hot, the cold air will flow in the direction of the hot air. Therefore, the cold air will enter the inside of the air flow channel 103 and be ejected from the other end of the air flow channel 103 to form convection, taking the heat out, achieving the effects of efficient heat dissipation and high safety;

[0048] By making one end of the heat dissipation fin 102 be an inclined surface, the area of the air flow channel 103 formed by the inclined surface end of the heat dissipation fin 102 is larger than the other surface, resulting in the intake port cross-section of the air flow channel 103 being larger than the outlet port cross-section. When cold air enters the interior of the air flow channel 103, the cross-section of the air flow will gradually decrease, thereby increasing the air flow velocity and achieving the effect of further improving the heat dissipation rate.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor housing with an efficient heat conduction structure, comprising an inner housing mechanism (1), wherein the stator and rotor of the motor are installed inside the inner housing mechanism (1) and fixed using a front cover and a rear cover, and is characterized in that: The outer surface of the inner shell mechanism (1) is sleeved with an outer shell mechanism (2), and there is a gap between the inner shell mechanism (1) and the outer shell mechanism (2); The inner shell mechanism (1) includes an inner protective shell (101). A plurality of heat dissipation fins (102) are fixedly connected to the outer surface of the inner protective shell (101) at equal intervals. An air flow channel (103) is left between the heat dissipation fins (102), and both ends of the air flow channel (103) are through; Motor mounting holes (104) are provided at both ends of the inner protective shell (101); The outer shell mechanism (2) includes an outer protective shell (201), and the inner wall of the outer protective shell (201) is fixedly connected to the outer surface of the heat dissipation fins (102).

2. The motor housing with an efficient heat conduction structure according to claim 1, characterized in that: The heat dissipation fins (102) are rigid metal strips, and the length of the heat dissipation fins (102) is equal to the length of the inner protective shell (101).

3. The motor housing with an efficient heat conduction structure according to claim 1, characterized in that: One end of the heat dissipation fin (102) is an inclined surface, and the area of the air flow channel (103) formed by the inclined surface end of the heat dissipation fin (102) is larger than that of the other side.

4. The motor housing with an efficient heat conduction structure according to claim 1, characterized in that: The motor mounting holes (104) are opened at the connection between the inner protective shell (101) and the heat dissipation fins (102), and the motor mounting holes (104) are circumferentially arrayed around the axis of the inner protective shell (101).

5. The motor housing with an efficient heat conduction structure according to claim 1, characterized in that: A plurality of heat conduction grooves (202) are provided on the outer surface of the outer protective shell (201), and the heat conduction grooves (202) are evenly and circularly distributed on the outer surface of the outer protective shell (201).

6. The motor housing with an efficient heat conduction structure according to claim 5, characterized in that: The diameter of the outer protective shell (201) is adapted to the front cover and the rear cover of the motor, and the outer diameter of the heat conduction grooves (202) is larger than the diameter of the front cover and the rear cover of the motor.

7. The motor housing with an efficient heat conduction structure according to claim 1, characterized in that: One end of the inclined surface of the heat dissipation fin (102) is close to the motor shaft.

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