CN2711418Y

CN2711418Y - Electric fuel combustion double-groove vane pump

Info

Publication number: CN2711418Y
Application number: CN 200420062535
Authority: CN
Inventors: 薛肇江
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-05
Filing date: 2004-07-05
Publication date: 2005-07-20
Anticipated expiration: 2014-07-05

Abstract

The utility model discloses an electric fuel impeller pump, comprising an impeller which is in circle plate form and is provided with an impeller blade part along the outer circumference part, and a motor part which rotates and drives the impeller. The motor part comprises a motor shaft, a rotor, a permanent magnet and a tubular shell body. When a sliding face supporting the impeller is relatively formed by the two lateral faces of the impeller in tiny gap, the periphery side of the sliding surface forms an arc band shape pump chamber extending along the outer circumference part of the impeller. A pump case is formed by a fuel suction inlet which is arranged on one end part of the arc band shape pump chamber, and a pump chamber exhaust port which is arranged on the other end part of the arc band shape pump chamber. The pump case comprises a pump cover which is provided with the suction inlet and the pump chamber, and a pump seat which is provided with the exhaust port and the pump chamber. The impeller is arranged between the pump cover and the pump seat. Two mutual separated arc band shape pump chambers are respectively arranged on the pump cover and the pump seat, and are communicated with the suction inlet and the exhaust port. Correspondingly, the impeller blade part of the impeller is also provided with two rounds of mutual separated impeller blades. The beneficial technical effects of the utility model are that as the impeller is provided with two concentric rounds of impeller blades, and the pump cover and the pump seat are respectively provided with two mutual separated arc band shape pump chambers, two pumping flow circuits are composed; one pumping flow circuit is communicated with the suction inlet, and one pumping flow circuit is connected with the exhaust port. Thus, the utility model has the advantages of bigger flow quantity and better stability of the delivery pressure.

Description

Electric fuel double groove vane pump

Technical field

The utility model relates to a kind of non variable capacitance type fluid pump, relates in particular to a kind of from the impeller pump of motor fuel of a fuel tank to the ejecting system transfer the fuel of an internal-combustion engine.

Background technique

At present, electric fuel punp mainly contains two kinds of structures by the mechanical structure branch, and a kind of is the electric fuel oil gear pump, and another kind is an impeller pump of motor fuel, and the utility model belongs to a kind of structure in back.The prior art comparatively approaching with the utility model has: notice of authorization number is CN1114034C, and the patent No. is ZL00807181.0, and denomination of invention is the patent of invention of " electric fuel pump "; Notice of authorization number is CN1096572C, and the patent No. is ZL97191935.6, and denomination of invention is the patent of invention of " wheel blades type pump "; And notice of authorization number is CN1114035C, and the patent No. is ZL99813542.9, and denomination of invention is the patent of invention of " electric fuel pump "; With notice of authorization number be CN1126872C, the patent No. is ZL98119750.7, denomination of invention is the patent of invention of " electric fuel pump ".They all disclose relevant common technical characteristics, as being to disclose following technical characteristics in the patent of invention of ZL99813542.9 in the patent No.: be discoideus and have the impeller of blade part along outer periphery portion; The pump case assembly, described pump case assembly is provided with rotatably mounted described impeller, and be equipped with the suction port and the exhaust port of the two end part opening of the pump stream of the zonal and arc of extending along the blade part of described impeller and this pump stream, have intercalation at the central shaft at described impeller center be fixed on rotor on this central shaft; The bearing of rotatably mounted described centre of rotor axle; Shape is provided in a pair of permanent magnet of described rotor periphery with one heart.Following technical characteristics in being the patent of invention of ZL98119750.7, the patent No. is disclosed again: the impeller that has the impeller slot part in discoideus outer edge; Rotation drives the motor section of this impeller, and described motor section comprises motor shaft, rotor, permanent magnet and tubular shell; Relative with micro-gap and when forming the slip surface of the described impeller of supporting with the bi-side of described impeller, outer circumferential side formation at described slip surface is provided with fuel suction port along the pump chamber of the zonal and arc of the outer periphery portion extension of described impeller and in an end of described zonal and arc, be provided with the pump case of pump chamber exhaust port in the other end, promptly described pump case comprises pump cover, pump seat, pump chamber, suction port and exhaust port.From on can find out, the pump stream of the zonal and arc of the impeller pump of motor fuel of prior art or pump chamber constitute by the groove that is separately positioned on a zonal and arc on pump cover and the pump seat (body), corresponding with it, the blade of impeller also has only a circle, promptly only has a pumping stream, this has just limited the further raising of the flow of impeller pump of motor fuel under equal volume and power, and the pressure stability that can not satisfy the output fluid requires higher occasion.

Summary of the invention

Technical problem to be solved in the utility model overcomes the deficiencies in the prior art exactly, provides that a kind of flow is bigger, the stable better impeller pump of motor fuel of delivery pressure.

The technological scheme that the utility model adopted is: electric fuel double groove vane pump comprises the impeller that is discoideus and has blade part along outer periphery portion; Rotation drives the motor section of this impeller, and described motor section comprises motor shaft, rotor, permanent magnet and tubular shell; Relative with micro-gap and when forming the slip surface of the described impeller of supporting with the bi-side of described impeller, form the pump chamber of the zonal and arc of extending along the outer periphery portion of described impeller at the outer circumferential side of described slip surface, and be provided with fuel suction port in an end of described zonal and arc, the pump case that is provided with the pump chamber exhaust port in the other end and forms, be that described pump case comprises pump cover that is provided with suction port and pump chamber and the pump seat that is provided with exhaust port and pump chamber, impeller places between pump cover and the pump seat, the pump chamber of described zonal and arc respectively is provided with two spaced apart from each other on pump cover and pump seat, and be communicated with suction port and exhaust port respectively, corresponding with it, the blade part of impeller also is provided with two circles spaced apart from each other.

As further improvement, on the end face of impeller, also be provided with the pressure balance lubrication hole of perforation, the both ends of the surface of described pressure balance lubrication hole also offer oil storage tank.

The utility model beneficial technical effects is: because impeller is provided with concentric two circle blades and respectively is provided with the pump chamber of two zonal and arc spaced apart from each other on pump cover and pump seat, two pumping streams have been constituted, and be communicated with a suction port and an exhaust port, thereby, the utlity model has that flow is bigger, the stable better advantage of delivery pressure, in addition, on the both ends of the surface of the pressure balance lubrication hole on the impeller end face, offer oil storage tank, make the easier formation of slip surface and keep oil film, can effectively reduce friction and noise.

Description of drawings

Fig. 1: structural representation of the present utility model;

Fig. 2: the structural representation of pump cover;

Fig. 3: the structural representation of pump seat;

Fig. 4: the structural representation of impeller;

The local amplification view of the F-F of Fig. 5: Fig. 4.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

As shown in the figure, the 1st, be discoideus and along outer periphery portion have two the circle blade part spaced apart from each other impeller, the 2nd, relative with a side of impeller 1 and have a pump cover of slip surface of supporting impeller 1 with micro-gap, the 3rd, be relative with the another side of impeller 1 and have a pump seat of slip surface of supporting impeller 1 with micro-gap, the 4th, form the pump chamber of two zonal and arc of extending along two circle blade parts of described impeller 1 at the outer circumferential side of the slip surface of pump cover 2 and

pump seat

3,5 are arranged on the fuel suction port of pump cover 2 one sides, 6 are arranged on the fuel discharge outlet of pump seat 3 one sides, constitute pump case 7 by pump cover 2 that is provided with suction port 5 and pump chamber 4 and the pump seat 3 that is provided with exhaust port 6 and pump chamber 4, the 12nd, the motor section of rotation drives impeller 1, described motor section 12 comprises motor shaft 8, rotor 9, permanent magnet 10 and tubular shell 11, impeller 1 is entrenched on the motor shaft 8, and tubular shell 11 is installed by permanent magnet 10 and setting-in pump case 7 and fuel output mouth 15.Also be provided with the pressure balance lubrication hole 13 of perforation on the end face of impeller 1, the both ends of the surface of described pressure balance lubrication hole 13 also offer oil storage tank 14, and described oil storage tank 14 is a curve bath, and groove depth is gradually shallow to two from pressure balance lubrication hole 13.Pressure balance lubrication hole 13 generally offers 2-5, preferably offers 3-4.

Claims

1, electric fuel double groove vane pump comprises the impeller that is discoideus and has blade part along outer periphery portion; Rotation drives the motor section of this impeller, and described motor section comprises motor shaft, rotor, permanent magnet and tubular shell; Relative with micro-gap and when forming the slip surface of the described impeller of supporting with the bi-side of described impeller, form the pump chamber of the zonal and arc of extending along the outer periphery portion of described impeller at the outer circumferential side of described slip surface, and be provided with fuel suction port in an end of described zonal and arc, the pump case that is provided with the pump chamber exhaust port in the other end and forms, be that described pump case comprises pump cover that is provided with suction port and pump chamber and the pump seat that is provided with exhaust port and pump chamber, impeller is placed among pump cover and the pump seat, it is characterized in that: the pump chamber of described zonal and arc respectively is provided with two spaced apart from each other on pump cover and pump seat, and be communicated with suction port and exhaust port respectively, corresponding with it, the blade part of impeller also is provided with two circles spaced apart from each other.

2, electric fuel double groove vane pump according to claim 1 is characterized in that: the pressure balance lubrication hole that also is provided with perforation on the end face of impeller.

3, electric fuel double groove vane pump according to claim 2 is characterized in that: the both ends of the surface of described pressure balance lubrication hole also offer oil storage tank.

4, electric fuel double groove vane pump according to claim 3 is characterized in that: described oil storage tank is a curve bath, and groove depth is gradually shallow to two from the pressure balance lubrication hole.

5, according to claim 2 or 3 or 4 described electric fuel double groove vane pumps, it is characterized in that: the pressure balance lubrication hole offers 2-5.