Low-noise vortex fuel pump

A fuel pump, low noise technology, applied in the field of vortex fuel pump, can solve the problems of large noise, strong mutual impact, large pressure pulsation of the fuel pump, etc., to achieve the effect of reducing noise and alleviating interference
CN109209705APending Publication Date: 2019-01-15ZHEJIANG SHUANGLIANG AUTOMOBILE PARTS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG SHUANGLIANG AUTOMOBILE PARTS
Publication Date
2019-01-15

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Abstract

The invention discloses a low-noise vortex fuel pump comprising a fuel pump body and an oil inlet assembly disposed at an oil inlet end of the fuel pump body. The oil inlet assembly comprises a pump cover, an impeller and an impeller seat which are arranged in order from the outside to the inside. Upper and lower end surfaces of the impeller are oppositely provided with a plurality of arc-shaped blade sets. The arc-shaped blade sets comprise arc-shaped upper blades and arc-shaped lower blades. Lower edges of the upper blades are fixedly connected to upper edges of the lower blades. Two vertically arc-shaped channels in opposite directions are formed between the adjacent arc-shaped blade sets. A fluid flows from the pump cover through the arc-shaped channels on the impeller, and finally enters the fuel pump body through the impeller seat. Through arranging the plurality of vertically symmetrical arc-shaped blade sets on the impeller, an oil duct in the impeller is folded into the two vertically arc-shaped channels in the opposite directions, the interference of the fluid in the fuel pump can be alleviated, and the noise of the fuel pump can be significantly reduced.
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Description

technical field

[0001] The invention relates to a vortex fuel pump, in particular to a low-noise vortex fuel pump. Background technique

[0002] Most of the existing fuel pumps for vehicles are vortex fuel pumps, which are characterized by small volume and high pressure. There is a longitudinal vortex on both sides of the impeller in the fuel pump and in the oil inlet and outlet passages, and the longitudinal vortex moves along the direction of impeller rotation. The longitudinal vortex of the fluid in the fuel pump enters and exits the impeller many times, gets work from the blades, and exchanges momentum with the fluid in the static flow channel, thereby obtaining the effect of pressure rise of the fluid in the pump.

[0003] Restricted by the manufacturing process, conventional fuel pump blades are mostly straight blades, which makes the interaction between the longitudinal vortex and the blades, pump cover and flow channel of the pump body relatively strong, resulting i...

Claims

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