Electric and fuel double groove impeller pump

Abstract

This invention discloses an impeller pump of motor fuel. It includes the disk impeller with blades around it; the motor driving the impeller, which includes: the motor spindle, the rotor, the permanent magnet and the canister shell; forming the sliding side supporting the relating impeller with tiny clearance to the two sides of the impeller, and at the same time along the outside of the sliding side forming the zonal and arc pump chamber along the outside of the relating impeller, and setting an inhalant blade at one end of the arc, and at the other side setting the shell of the pump forming the output of the pump, which includes the inhalant blade and the cover of the chamber and the output blade and the pump base, the impeller is between the cover and the base, two strips of the zonal chamber set separately on the cover and the base, and linked respectively to the inhalant and output blade, correspondingly, the blade of the roller also have two strips set separately. The beneficial effects of this invention are: it has larger flux and better stability of the input pressure because of the two loops of the homocentric blade on the impeller and the two zonal and arc chambers set separately on the cover and the base, which composes the two ways of pumping output.

Description

Technical field [0001] The invention relates to a non-variable volume fluid pump, in particular to an electric fuel impeller pump that delivers fuel from a fuel tank to an injection system of an internal combustion engine. Background technique [0002] At present, the electric fuel pump has two main structures according to the mechanical structure, one is an electric fuel gear pump, and the other is an electric fuel impeller pump. The present invention belongs to the latter structure. The prior art that is relatively close to the present invention is: the authorized announcement number is CN1114034C, the patent number is ZL00807181.0, the invention name is the invention patent of "Electric Fuel Pump"; the authorized announcement number is CN1096572C, the patent number is ZL97191935.6, invention The invention patent named "Vane Pump"; and the authorized announcement number is CN1114035C, the patent number is ZL99813542.9, and the invention patent is named ...

AI Technical Summary

Problems solved by technology

It can be seen from the above that the arc-shaped band-shaped pump flow path or pump chamber of the electric fuel impeller pump in the prior art is formed by an arc-shaped band-shaped groove respectively arranged on the pump cover and the pump seat (body) Correspondingly, the blade of the impeller has only one turn, that is, it has only one pumping flow path, which limits the further improvement of the flow rate of the electric fuel impeller pump under the same volume and power, and cannot meet the requirements for the output fluid. Where higher pressure stability is required

Images