CN1178863A - Diaphragm fuel pump - Google Patents
Diaphragm fuel pump Download PDFInfo
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- CN1178863A CN1178863A CN97119380A CN97119380A CN1178863A CN 1178863 A CN1178863 A CN 1178863A CN 97119380 A CN97119380 A CN 97119380A CN 97119380 A CN97119380 A CN 97119380A CN 1178863 A CN1178863 A CN 1178863A
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- fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a cheap clapboard-type fuel pump with a few components, a few assembly and operation hours and a filter screen and also increases the maintenance of the filter screen. From the suction side of a pump body 1, a one-way valve 10A is concavely arranged in a fuel inflow chamber F with an opening on an opposite surface 1A of the pump body 1 in a fuel inflow channel 5 on the upflow side. The opening of the fuel inflow chamber F uses a cover 12 for obstruction and a filter screen 20 is freely assembled and disassembled in the obstructed fuel inflow chamber F.
Description
The present invention relates to the petrolift of vaporizer that the fuel supply in the fuel tank is connected with motor, relate to particularly wherein that the suction of capable fuel is compressed in the pulsation that utilizes motor to produce, the diaphragm fuel pump of the pumping action that spues.
In the past, diaphragm fuel pump was configured on the fuel distribution tube that is connected between fuel tank and the vaporizer.And configuration is used for removing the filter screen of the foreign matter that the fuel supplied with to petrolift from fuel tank comprises in the fuel distribution tube that is connected between petrolift and the fuel tank.
According to such diaphragm fuel pump in the past, the following problem that will solve is arranged.
1) fuel distribution tube the 2nd fuel distribution tube, the fuel that is connected petrolift on fuel inflow road that must be equipped with the 1st fuel distribution tube, the outlet stream that is connected filter screen and the fuel tank of the inlet stream that connects fuel tank and filter screen the 3rd pipe arrangement of fuel flow path of road and vaporizer that spues.And, to be equipped with at each joints of these fuel distribution tubes and to be used to form the clamp that connects fuel pipe and each stream, joint and 6 clamps of entrance part of joint, vaporizer of export department of joint, petrolift of entrance part of joint, petrolift of export department of joint, filter screen of entrance part of joint, the filter screen of fuel tank must be arranged specifically.According to more than, when increasing fuel distribution tube, clamp parts number of packages, increase assembling operation, can not reach the reduction manufacture cost.The fuel tank, filter screen, petrolift, the vaporizer that particularly carry on vehicle are configured in than narrow space, and therefore because aforesaid assembling operation increases, assembling operation is difficulty extremely.
2), when must being equipped with installation usefulness parts such as the rubber that is used for filter screen is installed on the vehicle, carriage, need carry out installation to vehicle because filter screen will be set especially.According to more than because the parts number of packages increases and the assembling operation increase, can not reach the reduction manufacture cost.In addition, need to prepare to dispose the space of filter screen on vehicle, hinder the degrees of freedom of vehicle conceptual design thus, this is not satisfied.
3) in addition, generally be to adopt upper housing and downside shell joints such as deposited, form filter screen at the internal configurations filter element.According to more than, 2 shells will be arranged especially, the parts number of packages is increased, and the joint operation that need carry out these shells, therefore can not reduce manufacture cost.And then, because that upper housing and downside shell utilize is deposited and fixing, thereby the decomposition of filter element, cleaning difficulty.
The present invention finishes in view of the above-mentioned problem that will solve, and its purpose is to provide the parts number of packages few and assembling operation few, cheap diaphragm fuel pump in man-hour.And then another purpose be to improve have filter screen diaphragm fuel pump to vehicle boarded design freedom.Moreover other purposes are to seek to improve the maintainability of filter screen.
In order to achieve the above object, the 1st of diaphragm fuel pump of the present invention is characterised in that, clamping dividing plate between pump main body and lid, when forming pump chamber by dividing plate and pump main body, form pulsation by dividing plate and lid and press the chamber, when pump chamber carries out opening by suction side one-way valve fuel inflow road, open wide by the exhaust end one-way valve fuel road that spues, on the other hand, press in the diaphragm fuel pump that has opened wide on pulsation pressure importing road in the chamber in pulsation, in the fuel inflow road of upstream side, be arranged with fuel by the suction side one-way valve that in the pump main body, forms and flow into the chamber, flow into the filter screen that the foreign matter that comprises in the fuel that flows in the fuel inflow road is removed in indoor configuration at this fuel.
Except that above-mentioned the 1st feature, the of the present invention the 2nd is characterised in that, in each opposing side butt joint configuration of said pump main body and lid, above-mentioned fuel flows into the chamber and is arranged with opposing side in the pump main body by opening portion uncoveredly, and the opening portion loading and unloading of filter screen by fuel chambers freely are configured in fuel and flow in the chamber.
Except that above-mentioned the 1st feature, the of the present invention the 3rd is characterised in that, aforementioned barriers 10B and suction side one-way valve 10A and exhaust end one-way valve 10C are integrally formed with light sheet material.
Except above-mentioned the 1st feature, the of the present invention the 4th is characterised in that, be provided with the 1st on the opposing side 12A of lid 12 of opening portion 3A that above-mentioned fuel flows into chamber 3 and regulate recess 13 facing, regulate clamping the 1st Sealing 9 between recess 13 and the opening portion 3A, form the 1st conditioning chamber R1 the 1st.
In addition, except above-mentioned the 4th feature, the of the present invention the 5th is characterised in that, on the fuel of the downstream side road 6 that spues the fuel chamber recess 7 that spues is set from above-mentioned exhaust end one-way valve 10C, spue and be provided with the 2nd on the opposing side 12A of lid 12 of opening portion 7A of chamber recess 7 and regulate recess 17 facing fuel, regulate clamping the 1st Sealing 9 between recess 17 and the opening portion 7A the 2nd, form the 2nd conditioning chamber R2.
The 1st feature according to diaphragm fuel pump of the present invention, filter screen is configured in the fuel that is arranged with on the pump main body and flows into indoor, therefore can cut down the shell that constitutes fuel distribution tube, clamp, filter screen, and then cut down when being used for that filter screen is installed in parts numbers of packages such as carriage on the vehicle, their assembling operation can be significantly reduced, thereby its manufacture cost of reduction can be reached.
According to the 2nd feature, pump main body and lid by relative configuration form fuel inflow chamber, form filter screen by opening portion in the opposing side upper shed of pump main body, filter screen freely is configured in fuel by the opening portion loading and unloading in the opposing side upper shed of pump main body and flows into indoor, therefore can carry out decomposition, the cleaning of filter screen easy as can, reach the raising maintainability.
According to the 3rd feature, dividing plate and suction side one-way valve and exhaust end one-way valve are integrally formed with light sheet material, though finish function separately, can therefore can reduce the parts number of packages significantly and assemble man-hour with reducing with a light sheet material dual-purpose.
According to the 4th feature, relatively form the 1st conditioning chamber and fuel in the inside and outside by the 1st Sealing and flow into the chamber, therefore can reach the function that is adjusted in the fuel pulsation that produces in the fuel inflow road with simple structure, so can reduce the parts number of packages significantly and assemble man-hour.
In addition, according to the 5th feature, relatively form the 2nd conditioning chamber and the fuel chamber recess that spues in the inside and outside by the 1st Sealing, therefore at the 1st conditioning chamber by the fuel of attenuate pulsations, and then decay again at the 2nd conditioning chamber, can make from the spue pulsation of the fuel that the road flows out of fuel minimum.In addition, the wall of the 1st conditioning chamber and the 2nd conditioning chamber is common to the 1st Sealing, therefore can reduce the parts number of packages and assemble man-hour.
Fig. 1 is the simple sectional arrangement drawing according to diaphragm fuel pump of the present invention.
Embodiment
Below according to Fig. 1 explanation a embodiment according to diaphragm fuel pump of the present invention.The 1st, the pump main body in the drawings, forms the opposing side 1A that constitutes tabular surface up, in this pump main body 1, forms the recess and the stream of the following stated.The 2nd, be arranged with summary centre, be formed with the pump chamber recess of end recess in pump main body 1, on the opposing side 1A of pump main body 1, open wide.The 3rd, the right-hand fuel that is arranged with of pump main body 1 in the drawings flows into the chamber recess, and the opening portion 3A of its top is at the opposing side 1A of pump main body 1 opening.This fuel flows into chamber recess 3 in path tubular recess 3B and the tubular recess 3C opposing side 1A upper shed of big footpath.
The 4th, the fuel that is connected with not shown fuel tank flows into joint, and this fuel flows into joint 4 and pump chamber recess 2 and is connected with comprising the fuel inflow road 5 that fuel flows into chamber recess 3.Flow into road 5 at fuel and form the 1st fuel at the fuel flow direction at upstream side and flow into road 5A, form the 2nd fuel in the centre and flow into road 5B, form the 3rd fuel at downstream side and flow into road 5C.The upper reaches that above-mentioned the 1st fuel flows into road 5A flows into joint 4 with fuel and is connected, and the bottom opening ground of the path tubular recess 3B of dirty and fuel inflow chamber recess 3 is connected.The 2nd fuel flows into the upper reaches of road 5B at big footpath tubular recess 3C opening, and is dirty in the opposing side 1A of pump main body 1 upper shed.In addition, the 3rd fuel flows into the upper reaches of road 5C in the opposing side 1A of pump main body 1 upper shed, and is dirty in 2 upper sheds of pump chamber recess.That is, fuel inflow joint 4 is connected through opposing side 1A-the 3rd fuel inflow road 5C that the 1st fuel flows into recess 3-the 2nd fuel inflow road, 5A-fuel inflow chamber, road 5B-pump main body 1 with pump chamber recess 2.
The 6th, spue joint 6 and pump chamber recess 2 of the fuel that is connected with the not shown vaporizer joint that spues, this fuel is being connected through the fuel of the opening portion 7A opening above it chamber recess 7 and fuel road 8 that spues that spues on the opposing side 1A of pump main body 1.This fuel road 8 that spues forms the 1st fuel road 8A that spues at the upstream side of the flow direction of fuel, forms the 2nd fuel road 8B that spues in the centre, forms the 3rd fuel road 8C that spues at downstream side.The 1st fuel spues the upper reaches of road 8A at pump chamber recess 2 openings, and is dirty in the opposing side 1A of pump main body 1 opening.The 2nd fuel spues the upper reaches of road 8B at the opposing side 1A of pump main body 1 opening, and is dirty in fuel chamber recess 7 openings that spue.The upper reaches of road 8C is at fuel chamber recess 7 openings that spue and the 3rd fuel spues, and dirty and the fuel joint 6 that spues is connected.That is, pump chamber recess 2 and the fuel joint 6 that spues is connected through the 1st fuel opposing side 1A-the 2nd fuel of road 8A-pump main body 1 road 8B-fuel chamber recess 7-the 3rd fuel road 8C that spues that spues that spues that spues.
The 9th, flat the 1st Sealing by rubber material constitutes is configured on the opposing side 1A of pump main body 1.The 1st Sealing 9 is equipped with the 1st occlusive part 9A that inaccessible fuel flows into the opening portion 3A of chamber recess 3, face the 2nd fuel of the opposing side 1A of pump main body 1 upper shed flow into the dirty opening of road 5B opening 9B, face the 1st fuel at the opposing side 1A of pump main body 1 opening spue the 2nd occlusive part 9D of opening portion 7A of chamber recess 7 of the opening 9C of dirty opening of road 8A and inaccessible fuel that spues.Not inaccessible the 3rd fuel in the opposing side 1A of pump main body 1 upper shed of the 1st Sealing 9 flows into the opening at the upper reaches of road 5C, to the opening of the opposing side 1A of the pump housing 1 of pump chamber recess 2, at the spue opening at upper reaches of road 8B of the 2nd fuel of the opposing side 1A of the pump housing 1 upper shed.
The 10th, by being configured in the dividing plate that thin plate synthetic resin material on the 1st Sealing 9, thin-sheet metal material etc. form.This dividing plate 10 is equipped with pump dividing plate 10B, the exhaust end one-way valve 10C that control opens and closes the opening 9C of the 1st Sealing 9 of suction side one-way valve 10A that control opens and closes the opening portion 9B of the 1st Sealing 9, inaccessible pump chamber recess 2 in the opposing side 1A of the pump housing 1 upper shed.Above-mentioned suction side one-way valve 10A, exhaust end one-way valve 10C make tongue-shaped, and its base portion is held and fixes, and front end freely moves, and opens and closes above-mentioned opening 9B, 9C.
The 11st, planar the 2nd Sealing that constitutes by for example rubber material that is configured on the dividing plate 10.The 2nd Sealing 11 not inaccessible fuel in the opposing side 1A of pump main body 1 upper shed on its projection plane flows into the opening portion 3A of chamber recess 3, dirty opening that the 2nd fuel flows into road 5B, opening, the opening of pump chamber recess 2, the 1st fuel that the 3rd fuel flows into the upper reaches of road 5C dirty opening, the 2nd fuel of road 8A the spue opening portion 7A ground of chamber recess 7 of the opening at upper reaches of road 8 B and fuel that spues that spues and disposes.
The 12nd, thereunder the lid of the opposing side 12A of formation butt joint on the opposing side 1A of pump main body 1 is arranged with below opposing side 12A.That is, the 13rd, what the fuel that faces pump main body 1 flowed into that the opening portion 3A of chamber recess 3 is arranged with the 1st regulates recess.The 14th, face suction side one-way valve 10A and flow into the 1st fuel recess that the opening at the upper reaches of road 5C is arranged with at the 3rd fuel of the opposing side 1A of pump main body 1 upper shed.In the 1st fuel recess 14, the base portion of suction side one-way valve 10A is fixed, and allows that front end moves.The 15th, face the pulsation that the pump chamber recess 2 of pump main body 1 is arranged with and press the chamber recess, pulsation is pressed and is imported road 15A and press chamber recess 15 openings in this pulsation.The 16th, face exhaust end one-way valve 10C and at the 2nd fuel of the opposing side 1A of pump main body 1 upper shed the 2nd fuel recess that the opening at upper reaches of road 8B is arranged with that spues.In the 2nd fuel recess 16, the base portion of exhaust end one-way valve 10C is fixed, and allows that front end moves.The 17th, what the fuel that faces pump main body 1 spued that the opening portion 7A of chamber recess 7 is arranged with the 2nd regulates recess.The above-mentioned the 1st regulates recess the 13, the 1st fuel recess 14, pulsation presses chamber recess the 15, the 2nd fuel recess the 16, the 2nd conditioning chamber recess 17 each distinguishes to cover 12 opposing side 12A.
The 20th, filter screen is made of following.20A is that the below has opening 20B and opening, has the filter screen main body that the round-ended cylinder shape is arranged of upper bottom portion 20C up, opens the net of establishing as filter element 20E on the opening 20D of the upper lateral part that connects filter screen main body 20A.
Each parts that is made of above structure are by the following formation diaphragm fuel pump of assembling.Filter screen 20 flows into opening portion 3A configuration in fuel flows into chamber recess 3 of chamber recess 3 by the fuel in the opposing side 1A of pump main body 1 upper shed.Specifically, the cylindrical part of filter screen 20 belows is inserted in the path tubular recess 3B gently to be pressed into state.The so-called state that gently is pressed into is when filter screen 20 is applied upward pull-up power, can easily extract the state of filter screen 20 from path tubular recess 3B.Perhaps not shown, on the cylindrical part periphery below the filter screen 20, form the externally threaded while, on path tubular recess 3B, form internal thread, moving by making filter screen 20 spiral shells, can its spiral shell is fixed.In a word, filter screen 20 loading and unloading freely are fixed in the fuel inflow chamber recess 3.According to more than, the lower opening 20B of filter screen 20 faces the dirty opening configuration of the 1st fuel flow path 5A, the opening 20D of the upper lateral part of filter screen 20 faces the big footpath tubular recess 3C opening that fuel flows into chamber recess 3 by filter element 20E.
Then on the opposing side 1A of pump main body 1, dispose the opposing side 12A of the 1st Sealing 9, dividing plate the 10, the 2nd Sealing 11, lid 12 stackedly,, will cover 12 opposing side 12A spiral shell with screw 21 and fix on the opposing side 1A of pump main body 1 at this state.According to more than, at the opposing side 1A of pump main body 1 with cover between 12 the opposing side 12A, clamping the 1st Sealing 9, dividing plate the 10, the 2nd Sealing 11 form following chamber and stream.
That is, big footpath tubular recess 3C utilizes the 1st occlusive part 9A of the 1st Sealing 9 to carry out obturation to the opening portion 3A of the opposing side 1A of pump main body 1, forms by inaccessible fuel and flows into chamber F, flows into configuration filter screen 20 among the F of chamber at this fuel.On the other hand, the 1st of lid 12 is regulated recess 13 and is utilized the 1st occlusive part 9A of the 1st Sealing 9 to carry out obturation, forms by the 1st inaccessible conditioning chamber R1.Above-mentioned fuel flows into the inside and outside formation of the 1st occlusive part 9A of relative the 1st Sealing 9 with the 1st conditioning chamber R1 of chamber F.
The 1st fuel recess 14 utilizes the opposing side 1A of pump main body 1 to carry out obturation to the opening of the opposing side 12A of lid 12, the 2nd fuel flows into the dirty opening 9B that passes through the 1st Sealing 9 of road 5B at the 1st fuel recess 14 inner openings, and this opening 9B utilizes the suction side one-way valve 10A that forms on dividing plate 10 to carry out obturation.In addition, the opposing side A of pump main body 1 is passed through at the 1st fuel recess 14 inner openings in the upper reaches of the 3rd fuel inflow road 5C.
The pump chamber recess utilizes the pump dividing plate 10B of dividing plate 10 to carry out obturation to the opening of the opposing side 1A of pump main body 1, forms pump chamber P, and pulsation presses chamber recess 15 to utilize pump dividing plate 10B to carry out obturation to the opening of the opposing side 12A of lid 12, forms pulsation and presses chamber D.The inside and outside formation of this pump chamber P and the pump dividing plate 10B of the relative dividing plate 10 of pulsation pressure chamber D.
The 2nd fuel recess 16 utilizes the opposing side 1A of pump main body 1 to carry out obturation to the opening of the opposing side 12A of lid 12, the 1st fuel spues the dirty opening 9C that passes through the 1st Sealing 9 of road 8A at the 2nd fuel recess 16 inner openings, and this opening 9C utilizes the exhaust end one-way valve 10C that forms on dividing plate 10 to carry out obturation.In addition, the opposing side 1A of pump main body 1 is passed through at the 2nd fuel recess 16 inner openings in the upper reaches of the 2nd fuel inflow road 8B.
Moreover, the fuel chamber recess 7 that spues utilizes the 2nd occlusive part 9D of the 1st Sealing 9 to carry out obturation to the opening portion 7A of the opposing side 1A of pump main body 1, form the inaccessible fuel chamber G that spues, on the other hand, the 2nd of lid 12 is regulated recess 17 and is utilized the 2nd occlusive part 9D of the 1st Sealing to carry out obturation, forms the 2nd inaccessible conditioning chamber R2.The spue inside and outside formation of the 2nd occlusive part 9D of relative the 1st Sealing 9 of chamber G of above-mentioned fuel with the 2nd conditioning chamber R2.
From with last, flow into the fuel that fuel flows in the joint 4 and arrive the fuel joint 6 that spues by following path.That is, flowing into joint 4-the 1st fuel through fuel flows into road 5A-filter screen 20-fuel and flows into chamber F (fuel flows into the big footpath wound packages recess 3C of chamber recess 3) the-the 2nd fuel and flow into 5B-suction side, road one-way valve 10A-the 1st fuel recess 14-the 3rd fuel and flow into road 5C-pump chamber P-the 1st fuel road 8A-exhaust end one-way valve 10C-the 2nd fuel recess 16-the 2nd fuel road 8B-fuel chamber G (fuel spue chamber recess 7) the-the 3rd fuel the spue path of joint 6 of road 8C-fuel that spues that spues that spues that spues.
Above diaphragm fuel pump is to carry on vehicle.Fuel flows into joint 4 and is connected with fuel tank by the 1st not shown fuel distribution tube, and the fuel joint 6 that spues is connected with the fuel flow path of vaporizer on being installed in motor by the 2nd not shown fuel distribution tube.In addition, pulsation press to import road 15 and is connected with the sucking pipe of not shown motor, and the pulsation that is produced by motor is pressed and introduced in the pressure chamber D of pulsing.
So, diaphragm fuel pump as below drive, finish pumping action.Engine running generation pulsation in sucking pipe is pressed, and this pulsation pressure just by negative pressure importing road 15A generation effect in chamber D is pressed in pulsation, makes pump dividing plate 10B reciprocating according to the pulsation pressure.Thus, in pump chamber P, the chamber volume increase and decrease in the pump chamber P, therefore when the volume of pump chamber P increased, the pressure in the pump chamber P reduced, and when the volume reducing of pump chamber P, the pressure in the pump chamber P rises.And during working in pulsation is pressed in pulsation pressure chamber D, the variation in pressure in the above-mentioned pump chamber P is proceeded.
So, utilize the pulsation that imports in the pulsation pressure chamber D to press, pump dividing plate 10B moves up in the drawings, pressure one in the pump chamber P reduces, the pressure of this reduction is just by the 1st fuel road 8A effect exhaust end one-way valve 10C that spues, exhaust end one-way valve 10C makes opening 9C obturation, makes the 1st fuel road 8A that spues remain on blocked state.On the other hand, the pressure of the reduction in the pump chamber P flows into road 5C by the 3rd fuel and imports in the 1st fuel recess 14, and the suction side one-way valve is opened the opening 9B that connects the 2nd fuel inflow road 5B.According to more than, the pressure that reduces in the pump chamber P flows into road 5C-the 1st fuel recess 14-the 2nd fuel through the 3rd fuel and flows into road 5B-fuel and flow into chamber F-the 1st fuel and flow into road 5A-fuel and flow into the 1st not shown fuel distribution tube of joint 4-and work to fuel tank.Therefore, being stored in the interior fuel of fuel tank is inhaled in the pump chamber P through fuel inflow chamber F-the 2nd fuel inflow road 5B-opening 9B-the 1st fuel recess 14-the 3rd fuel inflow road 5C that the 1st not shown fuel distribution tube-fuel joint 4-the 1st fuel inflow road 5A one has filter screen.
Then, utilize the pulsation that imports in the pulsation pressure chamber D to press, pump dividing plate 10B moves down in the drawings, in above-mentioned, the fuel that is drawn in the pump chamber P is pressurized, and the pressure of the fuel that has pressurizeed in the pump chamber P flows into road 5C through the 3rd fuel and acts in the 1st fuel recess 14, suction side one-way valve 10A suffers the fuel pressure of this rising, makes to connect the opening 9B obturation that the 2nd fuel flows into road 5A.On the other hand, pressurized fuel acts on opening 9C by the 1st fuel road 8A that spues in pump chamber P, so exhaust end one-way valve 10C opens opening 9C.According to more than, pressurized fuel in the pump chamber P arrives the 1st fuel road 8A-opening 9C-the 2nd fuel recess 16-the 2nd fuel road 8B-fuel chamber G-the 3rd fuel road 8C-fuel joint 6 that spues that spues that spues that spues that spues, and supplies with vaporizer through the 2nd not shown fuel distribution tube.So, when engine running, to press by continuing in chamber D is pressed in pulsation, to import pulsation, the suction of said pump, the effect of spuing are carried out continuously, and diaphragm fuel pump is supplied with vaporizer continuously with the fuel in the fuel tank whereby.
And, flowing into the fuel that joint 4 flows from fuel in pump chamber P, the filter screen 20 of ensconcing in the diaphragm fuel pump in utilizing is removed the foreign matter that comprises in the fuel.That is, flow through the inside of the fuel of the 1st fuel flow path 5A through the opening 20B inflow filter screen 20 of the below of filter screen 20, then, process is in the filter element 20E that the opening 20D of the side of filter screen 20 lays flows into the big footpath tubular recess 3C of fuel inflow chamber F.Thereby the foreign matter that comprises in the fuel is filtered parts 20E and removes fully, and peace and quiet fuel feeds in the big footpath tubular recess 3C that fuel flows into chamber F, and this fuel utilizes above-mentioned effect to spue to vaporizer from spue joint 6 of fuel.
Moreover the 1st conditioning chamber R1 forms the effect make the fuel pulsation decay that produces in fuel flows into road 5, and the 2nd conditioning chamber R2 forms the fuel effect that fuel pulsations in the road 8 decay that spues of flowing through that makes.
As previously discussed, because in pump main body 1 with cover between 12 the fuel that forms and flow into built-in configuration filter screen 20 in the F of chamber, (1) can cut down the fuel distribution tube that connects motor and vaporizer and be used for when stream is concluded the pincers folder of fuel distribution tube, can cut down their connection and conclude operation, therefore can reach the reduction of manufacture cost.(2) center on the shell formation pump main body 1 of the outer periphery of filter screen 20, so do not need to prepare other shell, nor need the assembling operation of shell.Thereby can reach reduction to manufacture cost.(3) ensconce in the petrolift in the filter screen, therefore do not need to be used for filter screen 20 is installed in other assembly and installation exercise thereof on the vehicle, thereby can seek the reduction of manufacture cost, and then also need on vehicle, not prepare the configuration space of configuration filter screen, can improve the degrees of freedom of conceptual design.
In addition, be configured in fuel and flow into the interior filter screen 20 of chamber F, unload screw 21, take off and cover 12, can freely dismantle by enter the room 3 opening portion 3A of fuel, can carry out the replacing of filter screen 20 and the cleaning of filter screen 20 simply thus, therefore can reach and significantly improve maintainability.
In addition, owing to form the fuel inflow chamber F that disposes filter screen in the part that the fuel that is positioned at the upper reaches flows into road 5C from suction side one-way valve 10A, suction side one-way valve 10A and with its opening opposing 9B and exhaust end one-way valve 10C and with the not engaging-in foreign matter of occlusive part of its opening opposing 9C, therefore through obtaining stable pumping action for a long time.
In addition, fuel flows into chamber F can append the simple recess of formation for pump main body in the past, and this enforcement is as easy as rolling off a log.
In addition, suction side one-way valve 10A and exhaust end one-way valve 10C form with certain light sheet of self-healing property, therefore, for example compare with the occasion of using ball valve, can cut down and make ball valve rely on parts such as the spring of valve seat side and spring guide thereof, therefore can reduce manufacture cost.In addition, in pump main body 1 or cover above-mentioned ball valve of unnecessary special design etc. in the fuel passage of 12 inside, when can making the fuel passage simple shapeization, can make the difference of height of fuel passage little, thereby make miniaturization and slimming become possibility.In addition, finish the suction side one-way valve 10A of function separately respectively, dividing plate 10B and exhaust end one-way valve 10C will be with light sheet material dual-purposes, thereby can reduce parts number of packages and assembling man-hour significantly.
In addition, will relatively form the 1st conditioning chamber R1 and fuel inflow chamber F by the 1st Sealing 9 inside and outside, thereby the pulsation of the fuel that produces decays effectively at the 1st conditioning chamber R1 in fuel flows into road 5.In addition, the 1st Sealing 9 wants common fuel to flow into the wall of chamber F and the wall of the 1st conditioning chamber R1, thereby, for example, can make the transverse dimension miniaturization with each is compared in abutting connection with the occasion that disposes laterally making the 1st conditioning chamber R1 and fuel flow into chamber F.In addition, with respect to conditioning chamber in the past, the 1st conditioning chamber R1 will be to append the lid 12 that simple recess forms, have recess arrangement the pump main body 1 of filter screen 20 is arranged and be clamped in cover 12 and pump main body 1 between the simple structure of the 1st Sealing 9 can reach regulative mechanism, thereby can significantly reduce parts number of packages and assembling man-hour.And, even form the 1st conditioning chamber R1, the also not thick typeization of petrolift itself, thereby can keep slim shape.
In addition, by the 1st Sealing 9, relatively form the 2nd conditioning chamber R2 and the fuel chamber G that spues inside and outside, thereby the pulsation of the fuel of generation decays in the 2nd conditioning chamber R2 fuel spues road 6 in.Thereby, from the fuel fuel that road 6 flows out that spues, accept the attenuate pulsations effect two sides of the 1st conditioning chamber R1 and the 2nd conditioning chamber R2, can be as the minimum fuel of pulsing.In addition, the 1st conditioning chamber R1 and the 2nd conditioning chamber R2 want the wall of common encapsulant at Sealing 9, thereby can reduce the parts number of packages and assemble man-hour.Moreover the shape of filter screen 20 in the above-described embodiments is not limited to the drum that uses net, is flat also passable, and then filter element, and replacing net also can be the porous material with vent ability.In addition, suction side one-way valve 10A exhaust end one-way valve 10C is not limited to and integrally formed tongue-shaped of dividing plate 10, also can use ball valve.In addition, need on fuel flows into the upper opening 3A of chamber F, the 1st conditioning chamber R1 be set.The opening portion 3A utilization of fuel inflow this moment chamber F is covered 12 and is directly carried out obturation.In case of necessity, the fuel opening portion 3A that flows into chamber F also can utilize parts such as dividing plate, Sealing or lid to carry out obturation.In order more easily to describe, Fig. 1 represents structure with deployed condition, but is not subjected to the restriction of this figure.
As previously discussed, diaphragm fuel pump of the present invention, the fuel inflow road of upstream side, be arranged with fuel from the suction side one-way valve that forms in the pump main body and flow into the chamber, flow into indoor configuration filter screen at this fuel, thereby can cut down the parts number of packages of the diaphragm fuel pump that comprises fuel distribution tube and cut down assembling operation, thereby can reduce its manufacture cost greatly.In addition, owing to ensconce in the pump main body, in the filter screen so can improve the degrees of freedom of vehicle conceptual design.And then filter screen is configured in the fuel that is in the upper reaches from the suction side one-way valve and flows into the fuel inflow chamber on road, thereby through keeping the occlusive of one-way valve for a long time well, obtains stable pumping action.
Diaphragm fuel pump of the present invention, wherein, the pump main body is docked with lid, fuel inflow chamber in the upper shed of pump main body utilizes lid to carry out obturation, flow into indoor configuration filter screen at this fuel, therefore by lid being unloaded and can flow into chamber taking-up filter screen from fuel easy as can, reach the maintainability that improves filter screen thus from the pump main body.
In addition, diaphragm fuel pump of the present invention, its central diaphragm and suction side one-way valve and exhaust end one-way valve will form with certain light sheet material of self-healing property, thereby can cut down the parts such as spring guide that make ball valve lean on the upper ball valve seat when for example using ball valve, thereby can reduce manufacture cost.In addition, the inner fuel of pump main body or lid by in do not need to design especially above-mentioned ball valve etc., so when making the fuel passage simple shapeization, can make the difference of height of fuel passage little, thus can miniaturization and slimming.In addition, make suction side one-way valve, dividing plate and the exhaust end one-way valve of finishing function separately respectively, therefore can reduce parts number of packages and assembling man-hour significantly with a light sheet material dual-purpose.
In addition, relatively form the 1st conditioning chamber inside and outside wanting by the 1st Sealing and fuel flows into the chamber, therefore the pulsation of the fuel that produces in fuel flows into the road decays in the 1st conditioning chamber.In addition, the 1st Sealing wants common fuel to flow into the wall of chamber and the wall of the 1st conditioning chamber, therefore for example with at horizontal each compares with the occasion that fuel flows into the chamber in abutting connection with configuration the 1st conditioning chamber, can make the transverse dimension miniaturization.In addition, with respect to conditioning chamber in the past, the 1st conditioning chamber will can reach regulative mechanism to append lid that simple recess forms, have the pump main body of recess arrangement filter screen and to be clamped in the simple structure of the 1st Sealing between lid and the pump main body, thereby can significantly reduce parts number of packages and assembling man-hour.And, even form the 1st conditioning chamber, the also not thick typeization of petrolift itself, thereby can keep slim shape.
In addition, relatively form the 2nd conditioning chamber and the fuel chamber recess that spues inside and outside wanting by the 1st Sealing, therefore the pulsation of the fuel that produces in fuel spues the road decays in the 2nd conditioning chamber.Thereby, accept the attenuate pulsations effect two sides of the 1st conditioning chamber and the 2nd conditioning chamber from the fuel fuel that the road flows out that spues, therefore can be as the minimum fuel of pulsing.In addition, therefore the 1st conditioning chamber and the 2nd conditioning chamber will can reduce the parts number of packages and assemble man-hour at shared its wall of the 1st Sealing.
Claims (5)
1. diaphragm fuel pump, this petrolift is clamped between pump main body and the cover plate at dividing plate, when utilizing dividing plate and pump main body to form pump chamber, utilize dividing plate and lid to form pulsation and press the chamber, flow into the road at fuel and pass through the suction side one-way valve in the pump chamber opening, by the exhaust end one-way valve fuel road opening that spues, on the other hand, press the chamber that pulsation is pressed in the diaphragm fuel pump that imports the road opening in pulsation, from the suction side one-way valve (10A) that forms in pump main body (1), flow into road (5) at the fuel of upstream side and be arranged with fuel and flow into chamber (F), configuration is removed the filter screen (20) of the foreign matter that comprises in the fuel in the fuel inflow road (5) of flowing through and is constituted in this fuel flows into chamber (F).
2. the described diaphragm fuel pump of claim 1, wherein, said pump main body and lid (12), in the butt joint of separately opposing side (1A, 12A) and in the configuration, above-mentioned fuel flows into chamber (F) to carry out opening by opening portion (3A) and is arranged with on the opposing side (1A) of pump main body (1), and opening portion (3A) loading and unloading that above-mentioned filter screen (20) flows into chamber (F) by fuel freely are configured in the fuel inflow chamber (F) and constitute.
3. the described diaphragm fuel pump of claim 1, wherein, aforementioned barriers (10B) and suction side one-way valve (10A) and exhaust end one-way valve (10C) are integrally formed and constitute with light sheet material.
4. the described diaphragm fuel pump of claim 1, wherein, be provided with the 1st on the opposing side (12A) of lid (12) of opening portion (3A) that above-mentioned fuel flows into chamber (F) and regulate recess (13) facing, regulate clamping the 1st Sealing (9) between recess (13) and the opening portion (3A) the 1st, form the 1st conditioning chamber (R1) and constitute.
5. the described diaphragm fuel pump of claim 4, wherein, from above-mentioned exhaust end one-way valve (10C) the fuel chamber recess (7) that spues spuing road (8), the fuel of downstream side is set, spue and be provided with the 2nd on the opposing side (12A) of lid (12) of opening portion (7A) of chamber recess (7) and regulate recess (17) facing fuel, regulate clamping the 1st sealed member (9) between recess (17) and the opening portion (7A) the 2nd, form the 2nd conditioning chamber (R2) and constitute.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8283261A JP2936470B2 (en) | 1996-10-04 | 1996-10-04 | Diaphragm fuel pump |
| JP283261/1996 | 1996-10-04 | ||
| JP283261/96 | 1996-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1178863A true CN1178863A (en) | 1998-04-15 |
| CN1109811C CN1109811C (en) | 2003-05-28 |
Family
ID=17663172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97119380A Expired - Fee Related CN1109811C (en) | 1996-10-04 | 1997-09-30 | Diaphragm fuel pump |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2936470B2 (en) |
| CN (1) | CN1109811C (en) |
| TW (1) | TW367393B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213362B (en) * | 2005-07-06 | 2012-06-27 | 株式会社美姿把 | Fuel pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124008A (en) * | 1975-12-05 | 1978-11-07 | Kawasaki Jukogyo Kabushiki Kaisha | Integrated fuel supply system for an internal combustion engine including filter, valve, and pump |
-
1996
- 1996-10-04 JP JP8283261A patent/JP2936470B2/en not_active Expired - Fee Related
-
1997
- 1997-09-30 CN CN97119380A patent/CN1109811C/en not_active Expired - Fee Related
- 1997-10-04 TW TW086114507A patent/TW367393B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213362B (en) * | 2005-07-06 | 2012-06-27 | 株式会社美姿把 | Fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2936470B2 (en) | 1999-08-23 |
| CN1109811C (en) | 2003-05-28 |
| TW367393B (en) | 1999-08-21 |
| JPH10110682A (en) | 1998-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HONDA GIKEN KOGYO K.K. Free format text: FORMER OWNER: HONDA GIKEN KOGYO K.K.; KYOHAMA K.K. Effective date: 20071102 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071102 Address after: Tokyo, Japan, the port district, South Castle Peak, 2 Ding mu, 1 times, No. 1 Patentee after: Honda Motor Co., Ltd. Address before: Tokyo, Japan, the port district, South Castle Peak, 2 Ding mu, 1 times, No. 1 Co-patentee before: Hyohama K. K. Patentee before: Honda Motor Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030528 Termination date: 20091030 |