HIGH-EFFICIENCY, LOW-NOISE AUTOMOBILE ELECTRONIC WATER PUMP

摘要

Provided is a high-efficiency, low-noise automobile electronic water pump, relating to the technical field of automotive cooling systems, and comprising: a volute (6), an impeller (2), a main shaft (13), a rear pump body (9), a motor, a controller (24), and a sealed end cover (23); the controller (24) is electrically connected to the motor; a plurality of first through-holes (12) are provided on a front support plate of the rear pump body (9); a shaft through-hole (22) is provided in the axial direction inside the main shaft (13); a plurality of second through-holes (17) are provided on a back end cover (16); some of a high-pressure liquid at the outlet of the impeller in the volute (6) flows back through the first through-holes (12), the second through-holes (17), the shaft through-hole (22), and a return flow hole (4) on the impeller (2) in sequence to an impeller inlet; the inlet of the impeller (2) is provided with a belly-shaped flow channel, and a separating tongue (26) is obliquely arranged in the volute (6). The electronic water pump can achieve smart speed regulation according to cooling needs, facilitating the improvement of operating efficiency and cooling effectiveness, and reducing noise and facilitating disassembly.