High-efficiency low-noise automobile electronic water pump

Abstract

The invention discloses a high-efficiency low-noise automobile electronic water pump and relates to the technical field of automobile cooling systems. The high-efficiency low-noise automobile electronic water pump comprises a spiral case, an impeller, a spindle, a rear pump body, a motor, a controller and a sealing end cover; the controller is electrically connected with the motor; a supporting plate positioned at the front part of the rear pump body is provided with a plurality of first through holes; an axial through hole is formed in the internal axial direction of the spindle; the rear endcover is provided with a plurality of second through holes; a part of high-pressure liquid at the outlet of the impeller inside the spiral case flows back to the inlet of the impeller after sequentially passing through the first through holes, the second through holes, the axial through hole and a reflowing hole which is formed in the impeller; the inlet of the impeller is provided with a large-belly flow channel; a partition bolt is obliquely arranged inside the spiral case, so the high-efficiency low-noise automobile electronic water pump can overcome the problems about low efficiency, large noises, liable burning loss of a controller in the prior art and the like; and the high-efficiency low-noise automobile electronic water pump disclosed by the invention can realize intelligent speedregulation according to cooling requirements, is beneficial for improving the running efficiency and the cooling effect, reduces noises and is convenient to mount and dismount.

Description

technical field [0001] The invention relates to the technical field of automobile cooling systems, in particular to a high-efficiency and low-noise automobile electronic water pump. Background technique [0002] At present, the traditional automotive mechanical water pump uses an external engine as the power source, and uses pulleys, gears, etc. as the power transmission medium to transmit the power to the main shaft of the pump head. Circulating in the engine cooling circuit, the flow rate is determined by the engine speed. [0003] However, with the development of automobiles in the direction of intelligence, environmental protection and energy saving, the existing structure gradually highlights the following deficiencies. Because the traditional automobile water pump mainly drives the pump head by the engine under the action of the pulley, the speed of the impeller in the pump head will change proportionally with the change of the engine speed. On the one hand, the exis...

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Problems solved by technology

On the one hand, the existing water pumps can only meet the cooling requirements of the engine when the engine is loaded at a medium speed, and when the engine works under high-speed and heavy-load conditions, it is easy to cause the driven impeller to rotate too fast, and the The pressure at the inlet side of the impeller is too low to cause cavitation, causing greater noise and vibration

And when the engine works under low-speed and heavy-load conditions, it is easy to cause insufficient cooling water due to the low speed of the driven impeller, making it difficult to meet the cooling demand for heat dissipation.

On the other hand, because the existing automobile water pump does not have a separate power source, but is integrated in the engine, it is difficult to disassemble and assemble.

When the cooling system fails, it often needs to be disassembled and repaired together with the engine, which is very inconvenient

Moreover, in the process of maintenance and assembly, it is easy to cause damage to the mechanical seal due to improper operation, resulting in the outflow of coolant and damage to the entire cooling system.

Automotive electronic water pumps can overcome the shortcomings of mechanical water pumps. The controller controls the speed of the motor to change the flow rate of the water pump to meet the needs of the cooling system. It has been gradually popularized and applied, but due to high speed and structural space constraints, it has low efficiency, large noise and The controller is easy to burn out and other problems

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