Integral and liquid-lubrication electric water pump driven by permanent magnet brushless direct current motor
A technology of permanent magnet brushless DC and electric motor, which is applied in the direction of liquid fuel engine, machine/engine, pumping device for elastic fluid, etc. It can solve the problem of motor performance degradation, large magnetic flux leakage of four magnetic poles, and magnetic pole Increased inter-space magnetic flux leakage and other problems, to achieve the effect of reducing the pressure per unit area, uniform distribution of magnetic flux density, reducing vibration and noise
Active Publication Date: 2013-09-25
于佳衣
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Problems solved by technology
For the integrated electric water pump, due to its large air gap length, if multiple magnetic poles are used, the magnetic flux leakage between the magnetic poles will be significantly increased, which will reduce the performance of the motor
For example, a single-phase four-pole brushless DC motor is only suitable for a brushless DC fan with a small air gap. When it is used for an electric water pump, due to the large air gap, the magnetic flux leakage between the four magnetic poles is relatively large.
Method used
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[0050] attached figure 1 , attached figure 2 , attached image 3 And attached Figure 4 The technical scheme, technical features and working principle of the present invention are illustrated in graphic form. The detailed description is as above.
[0051] attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 And attached Figure 5 It also discloses the specific implementation of the present invention on the motorcycle engine water cooling system.
[0052] Since the variation range of the heat dissipation of the engine is particularly large, in this embodiment, in the attached Figure 5 In the left part of the circuit, a temperature-controlled mechanical or electronic switch S1 is added. When the temperature of the engine body is low, S1 is disconnected. , the switch S1 is turned on, so that the system can be simplified, and the ability of automatic cooling and temperature control of the present invention can be brought into play.
[0053] ...
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The invention relates to an integral and liquid-lubrication electric water pump driven by a permanent magnet brushless direct current motor, which belongs to the field of a brushless direct current micro-motor water pump and can be used as an electric circulation pump of an internal combustion engine water-cooling system. The integral and liquid-lubrication electric water pump provided by the invention is provided for substituting the complicated electric water pump driven by a three-phase brushless direct current motor. In the integral electric water pump driven by a single-phase brushless direct current motor, a stator and a drive circuit are encapsulated into a stator slot with an encapsulating material; and the integral electric water pump is provided with bulged pole shoes and asymmetrical air gaps with good symmetry; a rotor water jacket cover can filter foreign matters and prevent the foreign matters from entering a rotor water jacket; the pressure of the water pump can drive cooling liquid to enter the rotor water jacket, thereby guaranteeing the lubrication of a bearing; and the front end surface of the rotor water jacket cover and a front cover form the inner flow channel of the water pump.
Description
technical field [0001] The invention relates to an integrated and liquid-lubricated permanent magnet brushless DC motor electric water pump, which belongs to the field of brushless DC micro-motor water pumps and can be used as an electric circulation pump for internal combustion engine water cooling systems, electric motors of hybrid vehicles and electric vehicles and their power The electric circulation pump of the water cooling system (and heating system) of the drive device, or the electric circulation pump of the water cooling system of other electronic and electrical equipment, devices, can also be used as a booster pump or circulation pump of the heating system of a motor vehicle, and a solar hot water System or other heat energy utilization (recovery) system circulation pump, and other aspects. Background technique [0002] Existing electric water pump similar to the utility of the present invention has following three classes. [0003] 1. Electric circulation pump f...
Claims
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IPC IPC(8): F04D13/06F04D29/04F04D29/06
CPCF04D13/0606
Inventor 于昊昱衣美凤于佳衣
Owner 于佳衣