CN207048890U - A kind of fuel filter center tube structure with fuel sucking pipe - Google Patents
A kind of fuel filter center tube structure with fuel sucking pipe Download PDFInfo
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- CN207048890U CN207048890U CN201720783880.3U CN201720783880U CN207048890U CN 207048890 U CN207048890 U CN 207048890U CN 201720783880 U CN201720783880 U CN 201720783880U CN 207048890 U CN207048890 U CN 207048890U
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- fuel
- sucking pipe
- fuel sucking
- pipe
- center tube
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Abstract
It the utility model is related to a kind of fuel filter center tube structure with fuel sucking pipe, including fuel filter center tube body, central tube body interior is axially arranged with fuel sucking pipe, and fuel sucking pipe bottom is straight tube pipe, the top of fuel sucking pipe is conical pipe, and the taper surface of conical pipe is provided with least one aperture.Compared with prior art, the utility model structure solves central tube gas accumulation problem, increases oil pump capacity by fuel sucking pipe, and in engine start, oil pump establishes rail pressure in a short time, starts engine rapid-ignition.
Description
Technical field
It the utility model is related to fuel filter, and in particular to a kind of fuel filter central tube knot with fuel sucking pipe
Structure.
Background technology
At present, in the design and utilization of cleaner, filter core is all by upper and lower end cap central tube, filter paper and some are close
Sealing forms.General Central pipe has wire netting to roll or plastic injection piece two ways, and Fig. 1, Fig. 2 are what wire netting rolled
Central tube, Fig. 3 are the central tube of injection molding, are that relatively common design on the market, central tube main function are at present
Filter paper (offer intensity) is provided and allows diesel oil to pass through central tube.
In filter design, also can some situations occur, when being applied to road vehicle such as cleaner, usually in low pressure oil
A large amount of bubbles are formed in pipe, influence the startability of vehicle, vehicle can not normal operation.Henry's law represents, in certain temperature
Sealing container in, the molar concentration that the partial pressure of gas is dissolved in the gas in solution is directly proportional.Therefore, in fuel system,
Its local gas pressure is higher, and the air being dissolved into diesel oil is more；Gas pressure diminishes, and the gas being dissolved in diesel oil will
Separate out.Diesel fuel tanks are connected with air, and its surface pressure is in 1bar (absolute pressure) left and right, the pipeline between fuel tank and oil transfer pump
In pressure be less than 1bar (absolute pressure), when diesel oil enters bigger surface of filter medium in coarse filter, local flow reduces,
In order to reach balance, gas will separate out, and these gases separated out can accumulate in the dirty side (filtered) of filter element, and
Float on liquid, fluid now, diesel oil, such as Fig. 4 is also not completely filled with filter central pipe from being full of cleaner
It is shown.
Vehicle, into start-up course, due to gas evolution in cleaner, makes the diesel oil liquid level in filter tank from static
Low (underfill filter tank), the diesel oil less than abundance, diesel pump are inhaled during vehicle ignition, in the fuel passage short time
Rail pressure can not be established in a short time, causes rocket ignition time to be grown, or even can not be lighted a fire.During starting ignition, bavin
Oily low pressure fuel pump will suck clean side in the air of the dirty side of cleaner (being filtered without filter paper), after these gases mix with diesel oil
Into diesel oil low pressure fuel pump, if gas is excessive, oil mass is very few, and rail pressure can not be established in a short time by also resulting in diesel pump,
Rocket ignition time is caused to be grown, or even can not starting ignition.This influence to user is very big, for vehicle/engine brand
The influence of value is also very big.
Chinese patent 200920172500.8 discloses a kind of element sub-assembly for fuel filter with quantitative degassing function,
Center fuel sucking pipe is coaxially provided with the central tube of filter element part, the upper end of center fuel sucking pipe is located at the through hole of upper end cover；In
Heart fuel sucking pipe oil-out position is flange plate-like, and its flange plate-like is axially uniformly arranged steam vent, passes through determining for center fuel sucking pipe
Amount exhaust, make to accumulate in the gas in filter tank with a certain amount of gradually discharge cleaner, while be unlikely to caused by tolerance is excessive again
Engine rail pressure drop, engine fluctuation of service, non-normal stop or difficulty in starting are caused, but the fuel sucking pipe oil pump capacity compares
Small, oil pump is still not easy to establish rail pressure in the short time, grows rocket ignition time.
Utility model content
The purpose of this utility model is exactly to provide a kind of fuel filter with fuel sucking pipe to solve the above problems
Center tube structure.
The purpose of this utility model is achieved through the following technical solutions：
A kind of fuel filter center tube structure with fuel sucking pipe, including fuel filter center tube body, it is described
Central tube body interior is axially arranged with fuel sucking pipe, and described fuel sucking pipe bottom is straight tube pipe, and the top of fuel sucking pipe is conical pipe.
Further, diameter becomes larger described conical pipe from the bottom up, between the taper surface of conical pipe and upper plane
Angle in 40-75 degree.
Further, described oil suction length of tube is shorter 12-18mm than center tube body.
Further, the overall diameter ratio of the overall diameter of described fuel sucking pipe and center tube body is 1: 1.5-2.5.
Further, described conical pipe is provided with least one aperture, and the aperture of aperture is in 0.4-1mm.
Further, the fuel filter center tube structure is rolled by wire netting or formed by plastic injection, described suction
Oil pipe is integrally formed setting with center tube body.
This center tube structure, by setting fuel sucking pipe inside it, and the upper end of the fuel sucking pipe is conical pipe, from lower past
Upper diameter becomes larger, the conical pipe main function：1) oil pump capacity 2 in oil pipe is increased) it will be deposited in thereon on the outside of fuel sucking pipe
The gas in portion carries out squeezing action, and especially by the aperture being arranged on taper surface, make gas from the outside of fuel sucking pipe smoothly to
On the inside of up to fuel sucking pipe, and mixed with the fluid of inner side, wherein, the angle of the conical surface of conical pipe and upper interplanar is in 40-75 degree
Preferably, excessive too small effect is bad.
Oil suction length of tube is shorter than center tube body, and the overall diameter of fuel sucking pipe and the overall diameter ratio of central tube are 1: 1.5-
It is preferred between 2.5, in design, fuel sucking pipe is shorter 12~18mm than body central pipe, and the tapered slope of conical pipe is provided with least
One aperture, the effect in the hole are to allow the gas being squeezed in outside fuel sucking pipe to enter clean side, are mixed with fluid.If aperture mistake
Greatly, the gas outside fuel sucking pipe can enter clean side in the form of air pocket, and lasting air pocket can influence the oil suction of pump, cause
Large quantity of air enters pump, engine ignition delay；If hole is too small, gas discharge is not smooth, causes fluid position too low, oil suction is not
Freely, between 0.4~1mm, specific size calculates according to the gas flow separated out in filter tank size and fluid in aperture.
The utility model integrates a fuel sucking pipe on central tube, by using atmospheric pressure principle, in engine ignition
When, the suction of low-lift pump produces swabbing action to low pressure line, and active force can be formed in the clean side of cleaner, make fuel sucking pipe internal pressure
Diminish by force, for equilibrium air pressure, pressure forces liquid in pipe to rise rapidly, low-lift pump is established rail pressure rapidly, starts engine.
Aperture is provided with the inclined-plane of conical pipe, solves the gas separated out in liquid, air pocket is obstructed by aperture to be mixed such as after minute bubbles
Diesel oil, the igniting of vehicle or engine will not be impacted.This structure not only solves central tube gas accumulation problem, and
And increase oil pump capacity by fuel sucking pipe, in engine start, oil pump establishes rail pressure in the short time, makes engine rapid-ignition
Start.
Brief description of the drawings
Fig. 1,2 central tubes rolled for existing wire netting；
Fig. 3 is the central tube of existing injection molding；
Fig. 4 is the schematic diagram that fuel oil passes through filter central pipe filtering；
Fig. 5,6 be the utility model central tube structural representation；
In figure：1- centers tube body；2- fuel sucking pipes；3- apertures.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of fuel filter center tube structure with fuel sucking pipe, the fuel filter center tube structure is by plastic injection
Form, as shown in Figure 5,6, including fuel filter center tube body 1, be axially arranged with fuel sucking pipe 2 inside center tube body 1, inhale
The bottom of oil pipe 2 is straight tube pipe, and the top of fuel sucking pipe 2 is conical pipe, and the taper surface of conical pipe is provided with an aperture 3, conical pipe
Diameter becomes larger from the bottom up, and between 40-75 degree, the present embodiment is the angle between the taper surface of conical pipe and upper plane
60 degree, the length of fuel sucking pipe 2 is than 1 short 12mm of center tube body, and the overall diameter of fuel sucking pipe is with the overall diameter ratio of center tube body 1
: between 1.5-2.5, the present embodiment 1: 2.5, between 0.4-1mm, the present embodiment aperture is 0.4mm in the aperture of aperture 3.
Claims (6)
1. a kind of fuel filter center tube structure with fuel sucking pipe, including fuel filter center tube body, in described
It is axially arranged with fuel sucking pipe inside heart tube body, it is characterised in that described fuel sucking pipe bottom is straight tube pipe, and top is conical pipe.
2. a kind of fuel filter center tube structure with fuel sucking pipe according to claim 1, it is characterised in that described
Conical pipe diameter becomes larger from the bottom up, the angle between the taper surface of conical pipe and upper plane is in 40-75 degree.
3. a kind of fuel filter center tube structure with fuel sucking pipe according to claim 1, it is characterised in that described
Oil suction length of tube it is shorter 12-18mm than center tube body.
4. a kind of fuel filter center tube structure with fuel sucking pipe according to claim 1, it is characterised in that described
Fuel sucking pipe overall diameter and center tube body overall diameter ratio 1：1.5-2.5.
5. a kind of fuel filter center tube structure with fuel sucking pipe according to claim 1, it is characterised in that described
The conical pipe on fuel sucking pipe top be provided with least one aperture, the aperture of aperture is in 0.4-1mm.
A kind of 6. fuel filter center tube structure with fuel sucking pipe according to claim 1, it is characterised in that the combustion
Oil rectifier center tube structure is rolled by wire netting or formed by plastic injection, described fuel sucking pipe and center tube body one into
Type is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783880.3U CN207048890U (en) | 2017-06-30 | 2017-06-30 | A kind of fuel filter center tube structure with fuel sucking pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783880.3U CN207048890U (en) | 2017-06-30 | 2017-06-30 | A kind of fuel filter center tube structure with fuel sucking pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048890U true CN207048890U (en) | 2018-02-27 |
Family
ID=61494807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720783880.3U Active CN207048890U (en) | 2017-06-30 | 2017-06-30 | A kind of fuel filter center tube structure with fuel sucking pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207048890U (en) |
-
2017
- 2017-06-30 CN CN201720783880.3U patent/CN207048890U/en active Active
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