Cooling system of blower motor

Abstract

The utility model relates to the technical field of motor cooling, in particular to a cooling system of an air blower motor, the air blower motor is composed of a motor shell, a stator fixed in the motor shell and an internal rotor installed in the stator, and the two ends of the rotor are fixedly connected with the stator in a rotatable mode through bearings. An impeller is coaxially arranged on the rotor, the impeller is located in the motor shell and is close to the bottom of the motor shell, a gas inlet is formed in the bottom of the motor shell, and a gas outlet is formed in the top of the motor shell; a water cooling channel is arranged between the stator and the motor shell, and the motor shell is provided with a water inlet and a water outlet which are respectively communicated with the water cooling channel. According to the utility model, the blower motor is cooled by combining air cooling and water cooling, so that the working performance and the service life of the blower motor are remarkably improved, and the blower motor cooling device is particularly suitable for cooling requirements of various high-performance blower motors.

Description

Technical Field

[0001] The utility model relates to the technical field of motor cooling, in particular to a cooling system for a blower motor. Background Art

[0002] During the operation of the blower motor, a lot of heat will be generated inside the motor, especially when it is running at high load for a long time. If the heat cannot be dissipated effectively, the motor temperature will rise sharply, resulting in reduced motor efficiency, unstable performance, and even possible damage due to overheating. Therefore, in order to maintain the normal operation of the blower motor and extend its service life, it is very important to cool the blower motor.

[0003] However, the existing cooling methods for blower motors mainly adopt one of air cooling and water cooling. The air cooling method usually uses a fan to blow air into the motor to take away the heat. Its advantages are simple structure and low cost, but the cooling effect is limited, especially in high-power motors, it is difficult to meet the heat dissipation requirements. In addition, this cooling method fails to fully consider the cooling in the air gap of the blower motor and the heat dissipation of the bearings. The high temperature in the air gap will cause the electromagnetic performance of the motor to decrease, and the excessive bearing temperature will also affect the operating stability and service life of the blower motor. The water cooling method usually arranges cooling water pipes inside or outside the motor to take away the heat. Its cooling effect is better, but the system is complex, the cost is high, and it is necessary to maintain the cleanliness and circulation of the cooling water. Therefore, it is necessary to improve the cooling efficiency of the blower motor by optimizing the internal structure of the blower motor. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a cooling system that uses both air cooling and water cooling to cool the blower motor, so as to improve the cooling efficiency of the blower motor, reduce energy consumption, and extend the service life of the blower motor and bearings.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cooling system for a blower motor, wherein the blower motor is composed of a motor housing, a stator fixed in the motor housing, and an internal rotor installed in the stator, both ends of the rotor are rotatably fixedly connected to the stator through bearings, an impeller is coaxially arranged on the rotor, the impeller is located in the motor housing and close to the bottom of the motor housing, a gas inlet is arranged at the bottom of the motor housing, and a gas outlet is arranged at the top of the motor housing; a water cooling channel is arranged between the stator and the motor housing, and a water inlet and a water outlet respectively connected to the water cooling channel are arranged on the motor housing;

[0006] Furthermore, the impeller is a multi-blade structure, and a plurality of the blades are evenly distributed on the rotor;

[0007] Furthermore, the water cooling channel is a spiral structure wound around the outer wall of the stator;

[0008] Further, the gas outlet is a slotted structure with multiple evenly distributed circumferentially along the top of the motor housing;

[0009] Further, a filter screen is provided at the gas inlet;

[0010] Further, the bearing is a magnetic levitation bearing;

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The cooling system of the blower motor provided by the present utility model adopts a combination of air cooling and water cooling to cool the blower motor, which can significantly improve the cooling efficiency of the blower motor. Moreover, the impeller provided for gas cooling can effectively take away the heat inside the blower motor, reduce the temperature of the blower motor, and at the same time can flow through the bearing to effectively cool the bearing, improving the working stability and service life of the bearing. The water cooling system increases the cooling area and cooling effect through the water cooling channel, further reducing the temperature of the blower motor.

[0013] The present utility model realizes the efficient cooling of the blower motor and the bearing, significantly improves the working performance and service life of the blower motor, and is particularly suitable for the cooling requirements of various high-performance blower motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural cross-sectional view of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the present utility model;

[0016] Figure 3 is a three-dimensional structural diagram of the rotor of the present utility model;

[0017] In the figure: 1, motor housing; 2, stator; 3, rotor; 4, impeller; 5, gas inlet; 6, gas outlet; 7, bottom of the motor housing; 8, bearing; 9, top of the motor housing; 10, water inlet; 11, water outlet; 12, water cooling channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions adopted by the present utility model will be described in detail below in conjunction with the accompanying drawings of the specification and embodiments.

[0019] As Figure 1-2 shown, the present utility model provides a cooling system for a blower motor, including: a blower motor and a cooling mechanism located inside the blower motor, and the cooling mechanism simultaneously uses both air cooling and water cooling methods to cool the heat generated during the operation of the blower motor;

[0020] The blower motor consists of a motor housing 1, a stator 2 fixed within the motor housing 1, and an internal rotor 3 mounted within the stator 2. Both ends of the rotor 3 are rotatably and fixedly connected to the stator 2 through bearings 8.

[0021] Furthermore, the bearing 8 is preferably a magnetic levitation bearing, that is, the rotor 3 is supported through magnetic levitation technology to achieve non-contact suspension of the rotor 3 and the stator 2.

[0022] In addition, as a preferred technical solution, in this embodiment, the motor housing 1 is made of high-strength material to improve the mechanical strength and durability of the cooling system of the entire blower motor; the winding of the stator 2 uses high-conductive material to increase the motor efficiency; the rotor 3 uses lightweight and high-strength material to reduce inertia and energy consumption;

[0023] The air-cooling method of the cooling mechanism has the following specific implementation: An impeller 4 is coaxially arranged on the rotor 3. The impeller 4 is located within the motor housing 1 and close to the bottom 7 of the motor housing. A gas inlet 5 is provided at the bottom 7 of the motor housing, and a gas outlet 6 is provided at the top 9 of the motor housing.

[0024] As Figure 3 shown, in this embodiment, the impeller 4 is preferably a multi-blade structure. A plurality of the blades are evenly distributed on the rotor 3, and the blade angles and curvatures can be precisely designed to enhance the gas flow effect.

[0025] Specifically, in this embodiment, the rotation of the rotor 3 drives the impeller 4 on the rotor 3 to rotate synchronously. The air around the blower motor is sucked into the interior of the blower motor through the gas inlet 5 at the bottom 7 of the motor housing by the impeller 4. At the same time, the gas is guided to flow within the air gap between the rotor 3 and the stator 2 and takes away the heat generated inside the blower. Subsequently, it is discharged from the gas outlet 6 at the top 9 of the motor housing. During the discharge process, the gas flows through the bearing 8 and can also cool the bearing 8.

[0026] Furthermore, the gas outlet 6 is a slotted structure arranged circumferentially along the top 9 of the motor housing. A plurality of slotted structures are evenly distributed to increase the gas discharge area and improve the cooling efficiency.

[0027] Furthermore, a filter screen is provided at the gas inlet 5 to prevent dust and impurities from entering the interior of the blower motor along with the gas and ensure the cleanliness of the gas.

[0028] In the present utility model, the water-cooling method of the cooling mechanism has the following specific implementation: A water-cooling channel 12 is arranged between the stator 2 and the motor housing 1. An inlet 10 and an outlet 11 are provided on the motor housing 1 and are respectively communicated with the water-cooling channel 12. The inlet 10 and the outlet 11 can be communicated with a cooling water circulation device outside the entire blower motor through pipelines.

[0029] Furthermore, the water cooling channel 12 is preferably a spiral structure arranged around the outer wall of the stator 2 and is made of a corrosion-resistant material. The spiral water cooling channel 12 can increase the cooling area of the stator 2;

[0030] In this embodiment, specifically, the cooling water is introduced into the water cooling channel 12 from the water inlet 10 through the cooling water circulation device to achieve the purpose of taking away the heat generated by the stator 2 by water cooling, and then returned to the cooling water circulation device through the water outlet 11 to realize the circulation of the cooling water.

[0031] The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and concept of the present invention, makes equivalent substitutions or changes, which are all covered by the protection scope of the present invention.

Claims

1. A cooling system for a blower motor, the blower motor comprising a motor housing (1), a stator (2) fixed in the motor housing (1), and an internal rotor (3) mounted on the stator (2), wherein both ends of the rotor (3) are rotatably fixedly connected to the stator (2) via bearings (8); It is characterized in that An impeller (4) is coaxially arranged on the rotor (3), and the impeller (4) is located in the motor housing (1) and close to the bottom (7) of the motor housing. The bottom (7) of the motor housing is provided with a gas inlet (5), and the top (9) of the motor housing is provided with a gas outlet (6); A water cooling channel (12) is provided between the stator (2) and the motor housing (1), and a water inlet (10) and a water outlet (11) respectively connected to the water cooling channel (12) are provided on the motor housing (1).

2. The cooling system for a blower motor according to claim 1, characterized in that: The impeller (4) is a multi-blade structure, and a plurality of blades are evenly distributed on the rotor (3).

3. The cooling system for a blower motor according to claim 2, characterized in that: The water cooling channel (12) is a spiral structure wound around the outer wall of the stator (2).

4. The cooling system for a blower motor according to claim 3, characterized in that: The gas outlet (6) is a plurality of slotted structures evenly distributed along the circumference of the top (9) of the motor housing.

5. The cooling system for a blower motor according to claim 4, characterized in that: The gas inlet (5) is provided with a filter screen.

6. The cooling system for a blower motor according to claim 5, characterized in that: The bearing (8) is a magnetic suspension bearing.

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