CN2813939Y - Electric fuel-oil pump - Google Patents
Electric fuel-oil pump Download PDFInfo
- Publication number
- CN2813939Y CN2813939Y CN 200520031395 CN200520031395U CN2813939Y CN 2813939 Y CN2813939 Y CN 2813939Y CN 200520031395 CN200520031395 CN 200520031395 CN 200520031395 U CN200520031395 U CN 200520031395U CN 2813939 Y CN2813939 Y CN 2813939Y
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- CN
- China
- Prior art keywords
- fuel
- oil
- pump
- oil outlet
- motor
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- Expired - Fee Related
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Abstract
The utility model relates to an electric fuel-oil pump, which is mainly composed of a shell, a motor and a pump body driven by a motor, wherein the pump body is arranged on the lower part of the shell and is provided with an oil inlet and an oil outlet of the pump body. The utility model is characterized in that the oil outlet of the fuel-oil pump is designed into a straight through oil outlet, and a check valve is arranged on an oil inlet of the pump body. Accordingly, when the fuel-oil pump works, under the action of an impeller rotating at high speed, fuel oil is sucked from the oil inlet, enters a fuel transmitting flow passage from the oil outlet of the pump body, and then is extruded out from the straight through oil outlet provided with a magnetic pipe; when the fuel-oil pump stops working, the check valve closes, fuel having residual pressure is filled into one part of the fuel-oil pump above the check valve, which is favorable for the next quick start; no matter the oil surface in a fuel-oil tank is high or low, a cavity can not be generated in the fuel transmitting flow passage. The utility model has the advantages of work service life extension and safe performance; in addition, oil gas can be promoted to be thoroughly vaporized after fuel oil is magnetized in order to achieve the fuel-saving purpose.
Description
Technical field
The utility model relates to a kind of fuel pump, the electric fuel punp that uses on particularly a kind of electro jet car.
Background technique
Electric fuel punp is a requisite heart component on the electro jet car, its main task is that to supply with oil-fired system enough and have a fuel oil of certain pressure, usually, employed electric fuel punp is mainly by shell on the automobile, motor and constitute by the electric motor driven pump housing, the pump housing is arranged on the bottom of shell, the pump housing is provided with filler opening, and making the fuel oil that pumps into directly flow through in the housing, exports by oil outlet behind the motor by motor or be set directly at, or in the setting airtight inner casing in the enclosure, the fuel oil that pumps into is exported by oil outlet through the fuel delivery runner of shell and inner casing formation.Because said structure electric fuel oil pump check valve is arranged on the oil outlet place, the brush motor is arranged and it is provided with in the enclosure by them for employing and constitute for the structure of fuel delivery runner, pasta is low under to stall operating mode below the transition point in fuel tank, at this moment, the following no fuel oil of safety check in the motor, whole motor forms cavity, the size of cavity increases and decreases with the height of fuel tank pasta, this kind operating mode is under the state that stops, the motor lines bag, brush, commutator, lead-in wire etc. exposes and easily cavitates in mixed gas, as if ato unit this moment, movable contact between motor brush and the commutator can produce spark in the moment of on/off, if normally used hydrocarbon gasoline, hydrocarbon gasoline mixture combustion boundary is very narrow, the mixed gas that overrich is rare excessively all can not burn, if but adopt China forcing the alcohol blended fuel of promoting at present, because pure generic is rich in the strong polar compound of oxygen, it mixes back formation low boiling azeotropic mixture with the hydrocarbon of gasoline, particularly can cause the volatility of whole fuel to strengthen strongly in the hot summer, vapour tension seriously raises, the interface that catches fire broadens, also can burn in rarefaction of air or denseer situation, at this moment, ato unit under the operating mode that mixed gas exists is arranged in low pasta motor cavity, the dry friction meeting produces electrical spark between motor brush and the commutator movable contact, and the mixed gas that contains alcohol runs into spark and very easily causes detonation.For adopting brushless motor, and it is arranged on structure in the airtight inner casing in the shell, though above-mentioned situation can not take place, but because of the brushless motor ratio with power has brush motor volume big, temperature rise during work, so the fuel delivery runner cavity that inner casing and shell constitute is also big, it is also long that fuel oil is full of time of cavity, under the operating mode of above-mentioned low pasta, the time of engine start is also longer relatively.
The model utility content
The utility model is the deficiency that exists in the above-mentioned background technology, provides a kind of can thoroughly avoiding to produce cavity in the fuel oil runner, makes that its operating life prolongs greatly, efficient height, the safe and reliable electric fuel punp of performance.
Its concrete solution is: the oil outlet of fuel pump is set to straight-through oil outlet, and safety check is arranged on the filler opening place of the pump housing, when making fuel pump work, under the impeller action of high speed rotating, fuel oil sucks after pump housing oil outlet enters the fuel delivery runner through filler opening, extrude by straight-through oil outlet then, and when cut-out of fuel pump, closure of check ring, be full of the fuel oil of band residual voltage in the above fuel pump of safety check, the height of the pasta in the fuel tank is beneficial to start fast next time, no matter all can not produce cavity in the fuel delivery runner.
In addition then, the oil outlet place of fuel pump is provided with a magnetic tube, makes the fuel oil energy of flowing through obtain magnetization, to reach the purpose of fuel-economizing.
The utility model is arranged on safety check at the filler opening place of the pump housing, and the oil outlet of fuel pump is one the straight-through oil outlet of magnetic tube to be installed on it, thereby thoroughly avoided producing in the fuel delivery runner cavity, make that not only operating life prolongs greatly, performance is safe and reliable, efficient is higher for it, and, fuel oil can promote oil gas fully to vaporize after magnetization greatly, to reach the fuel-economizing purpose.It is real to be a kind of electric fuel punp of carrying flammable and combustible liquids, particularly a kind of electric fuel punp of the use alcohol fuel that is suitable for installing on the electro jet car of being applicable to.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation.
Fig. 2 is the utility model embodiment 2 a structural representation.
Embodiment
Among Fig. 1, motor adopt for the brush motor is arranged, it is arranged in the shell 3, wherein, the central shaft two ends of rotor 4 are supported on upper end cap 14 and the fuel-displaced end cap 7 of impeller by bearing 5,15, and the pump housing is positioned at the bottom of fuel pump, and the impeller 8 on it is connected with the central shaft of this end of motor.The impeller oil-feed end cap 9 of shell 3 bottoms is provided with filler opening 11, and safety check 10 is arranged on filler opening 11 places, simultaneously, the oil outlet 17 that is provided with on the upper end cap 14 be one its be provided with the straightthrough port of magnetic tube 1, and the fuel-displaced end cap 7 of impeller is provided with pump housing oil outlet 6.
During work, can connect power supply by motor wiring terminal 16, when motor is worked, central shaft impeller 8 by motor is rotated synchronously, under the effect of impeller, fuel oil is sucked by filler opening 11, and pass through fuel delivery runner 12 through oil outlet 17 extrusion, if oil outlet place overpressure, when surpassing limit value, then high pressure oil will overflow by safety valve 2 and get back to fuel tank.When this fuel pump fuel cut-off, safety check 10 cuts out, the height of the pasta in the fuel tank no matter, all can be full of the fuel oil of band residual voltage in the fuel pump, both be beneficial to and start fast next time, the brush 13, commutator, lead-in wire etc. of motor can be exposed to produce cavitation erosion in the air, simultaneously, because the arc extinguishing effect of fuel oil, the movable contact between motor brush and the commutator can not produce electrical spark yet, thereby has thoroughly eliminated the mixed gas detonation that causes because of electrical spark.
Among Fig. 2, inner casing 18 constitutes a closed cavity that is filled with freezing mixture in it by the fuel-displaced end cap of the upper end cap 14, the impeller that are arranged on inner casing top and bottom 7, and the motor employing is brushless motor, it is arranged in the cavity of inner casing 18, wherein, stator behind rotor 4, the plastic packaging, electronic commutator are sleeved on inner casing 18, and the fuel delivery runner 20 that constitutes between the pump housing oil outlet 19 that the impeller oil outlet end covers and shell 3 and the inner casing 18 is communicated with.And all the other structures are identical with embodiment 1.
During work, the fuel oil that is sucked by filler opening 11 is finally extruded by oil outlet 17 through fuel delivery runner 20 by pump housing oil outlet 19.When cut-out of fuel pump, the safety check 10 that is positioned at filler opening 11 places cuts out, and is full of the fuel oil of being with residual voltage in the pump housing and in the fuel delivery runner 20, is beneficial to the startup of next motor, and shortened the starting time of motor greatly.
Claims (2)
1, a kind of electric fuel punp, mainly constitute by shell, motor and by the electric motor driven pump housing, wherein, the pump housing is arranged on the bottom of shell, the pump housing oil outlet that the pump housing is provided with filler opening and is communicated with fuel delivery runner input end, and the oil outlet of fuel pump is arranged on the output terminal of fuel delivery runner, and the oil outlet (17) that it is characterized in that fuel pump is set to straight-through oil outlet, and safety check (10) is arranged on the filler opening (11) of the pump housing and locates.
2, electric fuel punp according to claim 1 is characterized in that the oil outlet (17) of fuel pump locates to be provided with a magnetic tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031395 CN2813939Y (en) | 2005-07-26 | 2005-07-26 | Electric fuel-oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031395 CN2813939Y (en) | 2005-07-26 | 2005-07-26 | Electric fuel-oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2813939Y true CN2813939Y (en) | 2006-09-06 |
Family
ID=36949027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520031395 Expired - Fee Related CN2813939Y (en) | 2005-07-26 | 2005-07-26 | Electric fuel-oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2813939Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564700A (en) * | 2014-12-11 | 2015-04-29 | 磐安县安达碳基材料有限公司 | Hybrid-power fuel pump |
| CN105317602A (en) * | 2015-06-25 | 2016-02-10 | 众恒汽车部件有限公司 | External fuel pump assembly |
-
2005
- 2005-07-26 CN CN 200520031395 patent/CN2813939Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564700A (en) * | 2014-12-11 | 2015-04-29 | 磐安县安达碳基材料有限公司 | Hybrid-power fuel pump |
| CN105317602A (en) * | 2015-06-25 | 2016-02-10 | 众恒汽车部件有限公司 | External fuel pump assembly |
| CN105317602B (en) * | 2015-06-25 | 2018-06-12 | 众恒汽车部件有限公司 | External fuel oil pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 |