CN1550677A - Fuel pump - Google Patents
Fuel pump Download PDFInfo
- Publication number
- CN1550677A CN1550677A CNA2004100431884A CN200410043188A CN1550677A CN 1550677 A CN1550677 A CN 1550677A CN A2004100431884 A CNA2004100431884 A CN A2004100431884A CN 200410043188 A CN200410043188 A CN 200410043188A CN 1550677 A CN1550677 A CN 1550677A
- Authority
- CN
- China
- Prior art keywords
- blade groove
- rotating member
- axial end
- fuel
- intercommunicating pore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/50—Inlet or outlet
- F05B2250/503—Inlet or outlet of regenerative pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
In a fuel pump, an impeller is rotatably accommodated between a suction side cover and a pump casing. A pump channel of the suction side cover is positioned on an axial side opposite to a fuel discharge port with respect to the impeller. The impeller has blade grooves circumferentially outside and communicating holes circumferentially inside. A wall of a terminal end portion of the pump channel of the suction side cover has a guide portion directing from the blade grooves toward the communicating holes. The terminal end portion is pointed in shape in a rotation direction of the impeller. Fuel pressurized in the pump channel is guided from the blade grooves to the communicating holes at the terminal end portion without steeply reducing flow speed and flows through the communicating holes to the fuel discharge port.
Description
Technical field
The present invention relates to a kind of petrolift, the rotating member that has a plurality of blade grooves of arranging along its sense of rotation by rotation in this petrolift increases the pressure of suction fuel wherein.
Background technique
Patent document, for example EP-1286041A, JP-A-2001-342983 and JP-A-Hei08-014184 disclose some petrolifts, wherein have the pressure that a plurality of rotating members that are circumferentially formed the blade groove on its excircle increase the fuel that sucks by rotation.These traditional petrolifts all have mould component, and rotating member just rotatably is contained in this mould component.Mould component has by the fuel suction inlet arranges mouthful pump channel that extends to form groove along blade groove to fuel, thereby fuel is able to according to the rotation of rotating member and sucks and in the process of fuel, pressurize, mouthful discharge by row through the fuel of pressurization then by pump channel by the fuel suction inlet.
In traditional petrolift, pressurized fuel may collide the end wall of the final end of the pump channel that forms in mould component, thereby reduces the flow velocity of fuel.Therefore, fluctuation can appear in fuel pressure,, the fuel pressure pulsation may occur at pump channel final end place that is.Especially, because be arranged in pump channel on the axial side of rotating member pressurized fuel must towards be positioned at the rotating member opposition side on fuel row mouthful and cross rotating member in the axial direction and supply with, so pressurized fuel can impinge upon the end wall of final end in the pump channel that forms in the mould component, thereby the fuel pressure pulsation may appear.When occurring the fuel pressure pulsation in the fuel that flows in pump channel, petrolift will vibrate and petrolift may produce noise.
Summary of the invention
An object of the present invention is to provide and have more low noise petrolift.
For realizing this purpose, have rotating member and rotatably holding therein in the mould component of this rotating member, rotating member has a plurality of blade grooves and a plurality of intercommunicating pore.Blade groove is formed at respectively with given interval on the axial end and another axial end in the rotating member along the sense of rotation of rotating member.Intercommunicating pore is arranged and is formed at diametrically with given interval along sense of rotation and is offset on the circumferential position of (shift) with blade groove, arrives its another axial end thereby pass rotating member by an one axial end.Mould component has a fuel suction inlet, fuel row mouth and pump channel.Formed and be equipped with initial end that is communicated with the fuel suction inlet and the pump channel of the final end that is communicated with fuel row mouth to extend to final end by initial end along blade groove along the sense of rotation of rotating member, thereby the rotation by rotating member is sucked fuel by the fuel suction inlet, pressurization and mouthful discharged by row in pump channel.The fuel row degree of lip-rounding is formed in a side of an axial end of rotating member.
When using above-mentioned petrolift, the conduit wall that formation is positioned at another axial end one side pump channel final end of rotating member preferably has a guide portion, be used for fuel by towards the circumferential position of blade groove to circumferential position guiding towards intercommunicating pore.
Intercommunicating pore may be formed at the circumferential position that is positioned at the blade groove inboard or the outside diametrically, thereby makes guide portion fuel radially inwardly or outwards can be inducted into circumferential position towards intercommunicating pore by the circumferential position towards blade groove.
In addition, at least the part of guide portion comprise by towards the circumferential position of blade groove towards conduit wall side that the circumferential position towards intercommunicating pore guides gradually and smoothly.Circular arc is preferably made in the conduit wall side.
Except or replace the guide sections branch, the small end of cross sectional area along the sense of rotation of rotating member towards final end that is positioned at the pump channel final end of another axial end one side of rotating member diminishes gradually.That is, usually by towards its small end its degree of depth being shoaled or narrowed width being made tip shape with final end.
Use said structure, the fuel that pressurizes at the pump channel that is arranged on another axial end one side of rotating member just can be inducted into intercommunicating pore smoothly by the guide portion of final end and/or the dedicated shape of final end, and wherein the sectional area of the guide portion of final end and dedicated shape narrows down gradually towards its small end.Therefore, the pressurized fuel in the pump channel just flows to the fuel row mouthful who is positioned at pump channel axial opposed side on another axial end one side with respect to rotating member by intercommunicating pore and can not reduce the flow velocity of fuel sharp on another axial end one side.Therefore, can reduce the fuel pressure pulsation of final end significantly, thereby reduce the noise of petrolift.
In addition, the efficient of pump can be promoted significantly, because fuel flow rate does not reduce sharp in the terminal of pump channel.Pump efficiency is the working efficiency that comprises the pump of rotating member and mould component, and it can determine that wherein Q is a discharge amount by formula (Q*P/T*N), and P is a discharge pressure, and T is torque, and N is the rotating cycle of pump.The value of this formula is high more, and the efficient of pump just further improves.
When not providing guide portion and final end to form tip shape, the pump channel that is positioned at an axial end and another axial end both sides broadens in initial end and final end along the direction that intercommunicating pore and blade groove replace, and each initial end and final end just can be towards blade groove and intercommunicating pores like this.
When guide portion is provided, the pump channel that is positioned at axial end one side of rotating member broadens in initial end and final end along the direction of intercommunicating pore and blade groove skew, each the initial end and the final end that are positioned at like this on axial end one side of rotating member just can be towards blade groove and intercommunicating pores, and the pump channel that is positioned on another axial end one side of rotating member broadens in initial end along the direction of intercommunicating pore and blade groove skew, and the initial end that is positioned at like this on another axial end one side of rotating member just can be towards blade groove and intercommunicating pore.
In two kinds of above-mentioned situations, the pump channel that is positioned on an axial end and another axial end both sides communicates with each other by the intercommunicating pore that is positioned at each initial end and final end.Therefore, the fuel that is provided by the fuel suction inlet that is formed at another axial end one side of rotating member just can import the initial end that is formed at the pump channel on an one axial end one side smoothly, in addition, the fuel that pressurizes in the pump channel on another axial end one side of rotating member can import smoothly be formed at axial end one side of rotating member on the final end that is communicated with of fuel row mouth.
At each axial end place of rotating member, intercommunicating pore preferably is formed near the blade groove and is provided with the next door therebetween.Preferably, at least one end face has the communication passage that is formed on the next door among an axial end of rotating member and another axial end, and blade groove is communicated with intercommunicating pore by communication passage.
Use this structure, blade groove can surpass the next door or be communicated with intercommunicating pore by communication passage, thus the pressure balance in the pump channel on the axial end that makes same rotational position place and another axial end both sides.Therefore, rotating member is protected and avoids in axial direction being under pressure because have pressure reduction between the pump channel.Therefore, the slip resistance between rotating member and the mould component is restricted and avoids increasing.
In addition, the blade groove that is formed at an axial end preferably with the sense of rotation arranged alternate of the blade groove that is formed at another axial end along rotating member.Because between the pressure pulsation in pressure pulsation in the fuel that pressurizes in the pump channel on axial end one side and the fuel that on another axial end one side, pressurizes in the pump channel, phase shift can occur, so when the fuel of the pressure pulsation with out of phase merged at the final end place, the pressure pulsation meeting alleviated because it is cancelled out each other.Therefore, the pressure pulsation meeting by the fuel row mouthful fuel of discharging alleviates.
In addition, rotating member preferably has the annular portion that centers on each blade groove excircle continuously.In addition, be formed on the both sides of axial end of rotating member and another axial end pump channel preferably independently of one another and respectively be formed at axial end of rotating member and another axial end on blade groove be communicated with, in other words, the blade groove that is formed on axial end of rotating member is isolated to avoid fuel directly to flow therebetween with the blade groove that is formed on its another axial end.In this case, because fuel begins to contact with the annular portion that rotates with blade groove in pressure process, so compare with the situation that the stationary wall of mould component contacts with fuel, the pressure of the fuel in the pump channel (surface friction drag is littler) more efficiently increases.In addition, in this case, rotating member is protected and avoids being subjected to bias voltage in radial direction, and the slip resistance between rotating member and the mould component is restricted and avoids tilting because being subjected to power radially.Therefore, the slip resistance between axle and the bearing is restricted and avoids increasing.And the fuel vortex that is generated by blade groove in each pump channel can not contact with each other, and each fuel stream just avoids disturbed retardance like this, thereby has improved fuel pressurization efficient.
Description of drawings
By reading the following detailed description that all constitutes a part of the present invention, appended claims and accompanying drawing, the function of further feature that the present invention may be better understood and advantage and operating method and correlated parts.Wherein:
Fig. 1 is the vertical sectional view according to the petrolift of first embodiment of the invention;
Fig. 2 A among first embodiment from suction side view that impeller side is seen; The sectional view of Fig. 2 B for being done along the hatching line IIB-IIB among Fig. 2 A;
The pump case view of Fig. 3 for seeing from impeller side among first embodiment;
Fig. 4 among first embodiment from the suction side end cap that the pump case side is seen the schematic representation of impeller and pump channel;
Fig. 5 is the enlarged view of blade groove and intercommunicating pore among first embodiment;
Fig. 6 is near the blade groove and the pump channel sectional view of final end among first embodiment;
Fig. 7 is the raise cross-sectional schematic of operation of blade groove and pump channel pressure among first embodiment;
Fig. 8 A is the suction side cover view of seeing from impeller side among second embodiment; The sectional view of Fig. 8 B for being done along Fig. 8 A Vertical Centre Line VIIIB-VIIIB;
Fig. 9 is the sectional view according to the petrolift of third embodiment of the invention;
Figure 10 A is from the view of the suction side end cap that impeller side is seen among the 3rd embodiment; The sectional view of Figure 10 B for being done along Figure 10 A Vertical Centre Line XB-XB;
Figure 11 is the pump case view of seeing from impeller side among the 3rd embodiment; And
Figure 12 be among the 3rd embodiment from the suction side end cap that the pump case side is seen the schematic representation of impeller and pump channel.
Embodiment
(first embodiment)
Now with reference to the petrolift 1 of Fig. 1 explanation according to first embodiment.Petrolift 1 for example can be mounted in the pump of type in the case that is used for vehicle fuel tank inside.Petrolift 1 has pump portion 10 and is the motor part 11 of electric notor.
Fuel row mouthful 124 (referring to Fig. 3) are formed in the pump case 16, and pump case 16 is arranged in axial end one side of impeller 20 along the axial direction of axle 34, and axle 34 constitutes the running shaft of impeller 20.Fuel suction inlet 112 is formed in the suction side end cap 13, and suction side end cap 13 is arranged in impeller 20 another axial end one side along the axial direction of axle 34.Suction side end cap 13 and pump case 16 are equipped with C shape pump channel 110 and 120 (referring to Fig. 2 A and 3) respectively, pump channel 110 and 120 is all extended to fuel row mouth 124 by fuel suction inlet 112 along the sense of rotation of impeller 20 and along blade groove 23 independently, thereby is communicated with the blade groove 23 that forms on each axial opposed side end face of impeller 20.Between the excircle of the bottom of pump case 16 inner circumference and impeller 20, leave small gap.This small gap is impeller 20 necessary slit of smooth sliding in pump case 16, yet substantially it is not used as pump channel.Pump channel 110 and 120 has constituted pump channel 100.
Dot and dash line 200 and 202 among Fig. 2 A has shown the outer circumferential position and the inner circumference position of intercommunicating pore 24 in the blade 20.Shown in Fig. 2 A and 2B, use conical bottom that final end 116 is shoaled along the groove depth of suction side end cap 13 axial directions, and wherein the radial width of groove narrow down along the sense of rotation of impeller 20.That is, the cross sectional area of final end 116 is less towards its front end (small end) along the sense of rotation of impeller 20.
As shown in Figure 3, the pump channel 120 that is formed in the pump case 16 has initial end 122, its along the radial width of the radial direction of impeller 20 and length in fact be formed at suction side end cap 13 in pump channel 110 in the radial width and the length of initial end 113 identical.The inside circumference position of initial end 122 and outermost circumferential position are consistent with the outermost circumferential position of the inside circumference position of each intercommunicating pore 24 and each blade groove 23 respectively, initial like this end 122 is just directly in the face of at least one blade groove 23 and at least one intercommunicating pore 24, that is, initial end 122 is radially widened to be communicated with limited number blade groove 23 and intercommunicating pore 24 simultaneously.
As shown in Figure 4 and Figure 5, the impeller 20 of making dish type is set at each outer circumferential periphery of a side and another side (impeller is along the opposite sides of the axial direction of axle 34), and described side has along the blade 22 of its sense of rotation arranged alternate and blade groove 23.Fig. 4 has only shown blade 22 and the blade groove 23 of a part (only about half of) along the circular arrangement of sense of rotation of blade 20.Dot and dash line 204 among Fig. 4 has shown the outermost periphery of impeller 20.
Isolated by each blade 22 along circumferentially contiguous blade groove 23.As shown in Figure 6, the blade groove 23 that is positioned at of impeller 20 and another axial sides along the circumferential direction is offset (indention) each other by half of groove shaping pitch.The blade groove 23 that is positioned on 20 1 axial ends of impeller is isolated with the blade groove 23 that is positioned on impeller 20 another axial ends, and fuel just can directly not flow between blade groove on the axial end of impeller 20 and the blade groove on another axial end like this.
By being arranged in the overlapping part of blade groove 23 on 20 1 axial ends of impeller and another axial end among Fig. 7, each is positioned at a blade groove 23 on the axial end and can directly be communicated with the blade groove 23 that is positioned at another axial end, because the blade groove 23 that is positioned at an axial end of impeller 20 and another axial end is along the circumferential direction by half and skew each other of groove shaping pitch.Sectional drawing shown in Figure 6 does not show the axial small end part (inside part) of the blade groove 23 of axial end of impeller 20 and another axial end.The axial small end part of each of an axial end of impeller 20 and the blade groove 23 of another axial end all extends upwardly to the axial neutral position that exceeds impeller 20.
As shown in Figure 4 and Figure 5, annular portion 21 is positioned at outside the blade groove 23 diametrically, thereby can be around blade 22 and blade groove 23.Intercommunicating pore 24 extends through impeller along the axial direction of impeller 20.Intercommunicating pore 24 is formed at diametrically and surpasses the next door 25 that is positioned at blade 22 and blade groove 23 inboards and adjoining position with it.The number of intercommunicating pore 24 equates with the number of blade groove 23.Communication passage 26 is formed on the next door 25 of opposition side axial end of impeller 20, and each blade groove 23 and each intercommunicating pore 24 all pass through each communication passage.Each communication passage 26 allows to be formed at each blade groove 23b, 23c and the 23d on 20 1 axial ends of impeller and each blade groove 23b, the 23c and the 23d that are formed on impeller 20 another axial ends are interconnected, the latter along the circumferential direction is offset with each blade groove 23b, the 23c and the 23d that are formed on 20 1 axial ends of impeller by half of groove shaping pitch, as shown in Figure 6.
As shown in Figure 1, motor part 11 comprises shell 12, permanent magnet 30, armature 40 and rectifier 70.Shell 12 is made up of magnetic material.Suction side end cap 13 and discharge side end cap 18 are fixed on the shell 12 by the form of the opposition side axle head of crimping or riveted joint shell 12.Four permanent magnets 30 of all making the quadrant arc are installed and are fixed on the inner peripheral wall of shell 12 along circumference by resin material 32.Four permanent magnets 30 form four its polarity along the different magnetic pole of the sense of rotation of axle 34.
Rectifier 70 has six commutator segments of arranging along its sense of rotation 72.Commutator segment 72 is electrically insulated from each other by the gap that is formed between two adjacent commutator segments 72 and the dielectric resin material 73.Terminal 74 can be in circuit link to each other with each commutator segment 72 and the terminal 64 that are positioned at rectifier 70 1 sides.
The operation of petrolift 1 hereinafter will be described.
When impeller 20 rotates with armature 40, in fuel suction inlet 112 vacuum can appear.As a result, fuel is by the initial end 113 of fuel suction inlet 112 suction pump passages 110.The initial end 113 of pump channel 110 and the initial end of pump channel 120 122 are directly faced respectively and connection blade groove 23 and intercommunicating pore 24.The suction fuel that is drawn into initial end 113 by fuel suction inlet 112 not only flows into the blade groove 23 that is positioned on pump channel 110 1 sides, but also flows into the blade groove 23 that is positioned at pump channel 120 1 sides from initial end 113 by intercommunicating pore 24 and initial end 122.Then, as shown in Figure 7, the sense of rotation that the vortex that generates in a blade groove 23 by the rotation of impeller 20 flows into respect to impeller 20 is in the blade groove 23 of back.By in a plurality of blade grooves that provide along sense of rotation 23, repeating this operation, can in blade groove 23 and pump channel 110 and in blade groove 23 and the pump channel 120, produce circulation respectively.Therefore, separately fuel is being pressurizeed when fuel row mouthfuls 124 is flowed independently by fuel suction inlet 112 in the pump channel 110 and 120.
As shown in Figure 6, final end 116 and 123 places in pump channel 110 and 120, the connection meeting between the final end 116 of blade groove 23 and suction side end cap 13 is closed before blade groove 23 and final end 123 connections.Close one by one because be positioned at the blade groove 23 of final end 123 1 sides, thus the fuel of flow through blade groove 23 and pump channel 110 by the outer circumferential sides cell wall 15a of final end 116 to intercommunicating pore 24 guiding that are positioned at blade groove 23 inboards diametrically.Because outer circumferential sides cell wall 15a is level and smooth circular shape, so the fuel of pressurization can not caused sizable flow velocity to reduce by the location guide towards the inside radially guiding in the position of blade groove 23 court towards intercommunicating pore 24 in pump channel 110.
Flow to the final end 123 of pump channel 120 to the intercommunicating pore 24 at the fuel of the location guide of intercommunicating pore 24 final end 116 places by being positioned at pump channel 110 by the position of blade groove 23.Fuel in fuel in the pump channel 110 and the pump channel 120 merges at final end 123 places.Be formed at axial end of impeller 20 and the blade groove 23 on the opposition side axial end along its sense of rotation by groove shaping pitch half and on the position.Therefore, between the pressure pulsation of pressurized fuel phase shift can appear in the pressure pulsation of pressurized fuel and the pump channel 120 in the pump channel 110.When the fuel of the pressure pulsation with out of phase merged at final end 123 places, the pressure pulsation meeting alleviated because it is cancelled out each other.Therefore, the pressure pulsation by fuel row mouthful 124 fuel of discharging alleviates.
Guided and by flowing towards rectifier 70 outer periphery of armature 40 by fuel row mouthful 124 fuel of discharging, and by fuel discharge outlet 130 by petrolift 1 to engine emission.
Because the pressure of the fuel of pressurization is increased to fuel row mouth 124 by fuel suction inlet 112 along with the rotation of impeller 20 respectively in pump channel 110 and 120.So the fuel pressure in pump channel 110 and 120 has pressure gradient along the sense of rotation of impeller 20.Fuel pressure in the blade groove 23 is also increased to fuel row mouth 124 by fuel suction inlet 112 along sense of rotation.
At this, pump channel 110 and pump channel 120 are formed at the both sides and the directly connection each other of the running shaft of impeller 20 independently of one another, also do not form pump channel at the excircle place of impeller 20.In addition, the excircle annular portion 21 partly around blade groove 23 rotates with blade groove 23.Therefore, because the fuel pressure in fuel pressure in the pump channel 110 and 120 and the blade groove 23 is along the sense of rotation of impeller and different, so being protected, impeller 20 avoids being subjected to power radially.Therefore, impeller 20 is protected and avoids along the skew of radial direction, and the slip resistance between the inner peripheral wall of impeller 20 and pump case 16 is restricted and avoids increasing.
Because impeller 20 is not owing to be subjected to the effect of power radially along the pressure reduction of sense of rotation, so thereby axle 34 is restricted because of the power that radially applies and avoids tilting.Therefore, the slip resistance between axle 34 and bearing element 35 and 36 is restricted and avoids increasing.
When fuel pressurizeed in pump channel 110 and 120 respectively, pressure reduction may appear in the same rotational position place between pump channel 110 and pump channel 120.Because pump channel 110 and 120 is formed at the both sides of running shaft independently, and the pump channel in pressurization 110 and 120 only is communicated with the blade groove 23 that each pump channel 110 and 120 is faced, so pump channel 110 and pump channel 120 are not communicated with each other.Therefore, pump channel 110 and pump channel 120 can not be offset in the fuel pressure difference deltap at same rotational position place.
Yet communication passage 26 is formed in the next door 25 of isolated blade groove 23 and intercommunicating pore 24 on two axial side end faces of impeller 20.Therefore, the blade groove 23 that is positioned on the axle 34 axial direction both sides just communicates with each other by communication passage 26 and intercommunicating pore 24.In addition, intercommunicating pore 24 is formed near the next door that inner circumferential side is and quilt is thin 25 isolation of blade groove 23.Correspondingly, the distance of the connection between blade groove 23 and the intercommunicating pore 24 shortens in pressure process.Therefore, the pressure reduction at same rotational position place can be eliminated at an easy rate in pump channel 110 and the pump channel 120.
Because pump channel 110 and 120 intercommunicating pores of being faced by blade groove 23, communication passage 26 and each pump channel 24 communicate with each other indirectly, so the pressure in pump channel 110 and the pump channel 120 equates at same rotational position.Therefore, impeller 20 is protected and the pressure of the sense of rotation vertically that avoids being subjected to causing at the pressure reduction of same rotational position owing to pump channel 110 and pump channel 120.Therefore, the slip resistance between impeller 20 and suction side end cap 13 or the pump case 16 is restricted and avoids increasing.
In addition, guide portion 15 guiding fuel flow to the intercommunicating pore 24 that is positioned at inner circumferential side pump channel 110 final ends 116 places by blade groove 23.The outer circumferential sides cell wall 15a of guide portion 15 makes circular-arc.Therefore, guiding to the fuel that is positioned at intercommunicating pore 24 on the inner circumferential side by blade groove 23 is restricted and avoids reducing its flow velocity.In addition, final end 116 is made along the pointed shape of sense of rotation and the space of final end 116 and is progressively narrowed down.Therefore, fuel is restricted and avoids at final end 116 places bumps side channel face 14 and reduce flow velocity.Therefore, the fuel pressure pulsation at final end 116 places of pump channel 110 can alleviate and the noise that produces in pump portion 10 can reduce.
In addition, the blade groove 23 that is formed at along axle 34 axial direction on two axial ends of impeller 20 is isolated from each other, and directly contact of fuel wherein.Therefore, the fuel vortex that is produced by blade groove 23 avoids being blocked, and fuel pressurization efficient gets a promotion.
(second embodiment)
Shown second embodiment of the present invention among Fig. 8, wherein use identical reference numerals in fact with first embodiment in identical member.
The final end 142 that is formed at the pump channel 140 in the suction side end cap 80 forms the tip shape along sense of rotation.That is, the degree of depth of final end 142 narrows down gradually along sense of rotation, and its width remains unchanged in fact.
In addition, the conduit wall 82 of qualification pump channel 140 has the guide portion 83 that is used for radial inward guiding pump passage 140 on the suction side end cap 80 at final end 142 places.The excircle sidewall 83a of guide portion 83 is level and smooth circular arc.Therefore, fuel is restricted and avoids at final end 142 places bumps guide portion 83 and avoid reducing soon fuel flow rate.Therefore, the fuel pressure pulsation at the final end place of pump channel 140 can be alleviated and the noise that produces in pump portion 10 can be reduced.
In first and second embodiments, guide portion guiding fuel is flowed to the position of intercommunicating pore 24 on another pump channel final end place inner circumferential side by the position towards blade groove 23.In addition, the final end of another pump channel is also made tip shape.Therefore, the fuel flow rate loss at the final end place of another pump channel can be reduced, and the noise that generates in pump portion 10 can be reduced.
In addition, pump efficiency can get a promotion, because can be reduced in the fuel flow rate loss of another pump channel extreme positions.
(the 3rd embodiment)
Fig. 9 to 12 has shown the 3rd embodiment.Fig. 9 is the sectional drawing along the sectional position intercepting identical with Fig. 1.Identical with first embodiment in fact member uses identical reference number to indicate.
As shown in Figure 9, pressure regulator valve 310 is arranged on the discharge side end cap 302 of petrolift 300 with the fuel pressure in the fuel metering pump 300.Fuel pressure regulator valve 310 comprises ball 311, along a direction ball 311 is applied the spring 312 of bias voltage and the valve seat 313 of rotating bearing ball 311.When the pressure in the petrolift 300 surpassed predetermined pressure, ball 311 broke away from valve seat 311 against the biasing force of spring 312, thereby reduced the pressure in the petrolift 300.
Realize being electrically connected by disc crown cap 68 at the terminal 65 that the opposition side of rectifier 70 links to each other with the end of coil 62.
Suction side end cap 320, pump case 324 and impeller 330 form pump portion.Pump case 324 is clipped between suction side end cap 320 and the shell 12.Suction side end cap 320 and pump case 324 are formed for holding the mould component of impeller 330 as rotating member.
Fuel row mouthful 364 (referring to Figure 11) are formed at the pump case 324 that is arranged in along on 330 1 axial ends of impeller of the axial direction of axle 34, and axle 34 is formed the running shaft of impellers 330.Fuel suction inlet 352 (referring to Figure 10 A) is formed at the suction side end cap 320 of impeller 330 another axial end one sides of the axial direction that is arranged in edge axle 34.Suction side end cap 320 and pump case 324 are equipped with the pump channel 350 and 360 (referring to Figure 10 A and 11) that is generally C shape respectively.Each pump channel is all extended towards fuel row mouth 364 by fuel suction inlet 352 independently along the sense of rotation of impeller 330 and along blade groove 332, thereby is communicated with the blade groove 332 that forms on impeller 330 each opposition side axial end.Between the excircle of the lower inner circumferential portion of pump case 324 and impeller 330, provide small headroom.The headroom that this is small, the impeller 330 necessary gaps of promptly sliding smoothly in pump case 324 are not in fact as pump channel.Pump channel 350 and pump channel 360 are formed pump channel 340.
Dot and dash line 400 among Figure 10 A has shown the inner circumferential side position of blade groove 332 in the impeller 330, and dot and dash line 402 and 404 has shown the outer circumferential sides position and the inner circumferential side position of intercommunicating pore 334 in the impeller 330 respectively.Shown in Figure 10 A and 10B, the groove depth of final end 354 and groove radial width thereof shoal and narrow down along the sense of rotation of impeller 330.
As shown in figure 11, the pump channel 360 that is formed in the pump case 324 has initial end 362, its radial width, promptly along the length of the radial direction of impeller 330 in fact be formed at suction side end cap 320 in the radial width of initial end 353 of pump channel 350 identical.The outermost of initial end 362 and inside circumference position respectively with the inside circumference position consistency of the outermost circumferential position of each intercommunicating pore 334 and each blade groove 332, initial like this end 362 is just directly in the face of at least one blade groove 332 and at least one intercommunicating pore 334.
As shown in figure 12, a plurality of intercommunicating pores 334 are provided along sense of rotation along disc rotor 330 outer circumferential positions.Intercommunicating pore 334 is formed at the inner circumferential side (radially inner side) of annular portion 338, and annular portion 338 is formed at the outer circumferential edges of impeller 330.Intercommunicating pore 334 passes impeller 330 along the axial direction of impeller 330.Blade groove 332 along the sense of rotation of axle 34 alternately be formed in the impeller 330 on two axial ends in the radial direction by intercommunicating pore 334 on the position of bias internal.The blade groove 332 that is positioned at running shaft one side along sense of rotation by pitch half and with the blade groove phase deviation that is positioned on the running shaft opposite side.
In addition, be positioned at two blade grooves 332 on the axial end and be isolated from each other, fuel can directly not flowed through there like this.The blade groove 332 that closes on each other on sense of rotation is isolated from each other.Blade groove 332 and intercommunicating pore 334 communicate with each other by the communication passage 336 that is formed in the next door 335.Next door 335 centers on the excircle of blade groove 332 continuously along sense of rotation as an annular portion.
Next the operation of petrolift 300 will be described.
By the final end 363 that flows to pump channel 360 towards the position of blade groove 332 to fuel by the final end 354 of pump channel 350 by intercommunicating pore 334 towards the location guide of intercommunicating pore 334.Fuel in fuel in the pump channel 350 and the pump channel 360 merges at final end 363 places, and by fuel row mouthful 364 discharges.
(other embodiment)
In first and second embodiment, the position that is positioned at the blade groove 23 of running shaft direction both sides is offset each other along sense of rotation.The blade groove 23 that is positioned at both sides can be provided in the same position along sense of rotation.Also may provide a space to make communicates with each other at blade groove 23 with around between the annular portion 21 of blade groove 23 excircles along the blade groove 23 on the running shaft direction both sides.In addition, also can omit annular portion 21.
In second embodiment,, the final end 142 that is positioned at another axial end one side can be made tip shape by reducing the degree of depth of final end 142 and do not change channel width along sense of rotation.Be positioned at another axial end one side pump channel final end also can by shrink the pump channel width and at the final end place all the time the degree of depth of holding pump passage form tip shape.
In three embodiments of first embodiment to the, the final end that is positioned at the pump channel of another axial end one side can be kept identical aisle spare and not form tip shape when closure, be subjected to by pointing to towards the position of blade groove until the pump channel that is positioned at another axial end one side, and it radially radially is offset with respect to blade groove towards the guiding of the guide portion of the position of intercommunicating pore.In addition, the final end that is positioned at the pump channel of another axial end one side may close towards the position of intercommunicating pore 24 and blade groove 23 at the same time and not can by towards the position of blade groove 23 towards location guide towards intercommunicating pore 24, radially widened until the final end of the pump channel that is positioned at another axial end one side but formed tip shape.
In three embodiments of first embodiment to the, the fuel suction inlet is formed at mouthful opposition side with fuel row along the running shaft direction with respect to impeller.Fuel suction inlet and fuel row mouth can only be formed at impeller shaft to a side along the running shaft direction.
In addition, in three embodiments of first embodiment to the, pump channel is formed on two axial terminal of impeller along the running shaft direction independently of one another, and radially outer circumferential sides does not form pump channel in impeller.Pump channel can be formed at the outside of impeller diametrically, as disclosed among the JP-A-2001-342983.
In an embodiment, blade groove and the intercommunicating pore that has formed similar number at the radially inner side or the radial outside of impeller blade groove.The number of the intercommunicating pore that forms in impeller may be different with the number of blade groove.When the number of intercommunicating pore was same as the previously described embodiments less than the number of blade groove and rotation angular interval, a part of blade groove may not be communicated with intercommunicating pore by communication passage.Compare with above-mentioned embodiment, during less than the number of blade groove, also may increase the rotation angular interval of intercommunicating pore, thereby make each intercommunicating pore all corresponding and blade groove and intercommunicating pore are communicated with each other with each blade groove at the number of intercommunicating pore.
In an embodiment, mould component is made of suction side end cap and pump case.Yet mould component also can be made of single member.
Claims (21)
1. petrolift comprises:
Have a plurality of blade grooves (23,332) and a plurality of intercommunicating pore (24,334) rotating member (20,330), blade groove is formed on the axial end and another axial end of rotating member respectively along the sense of rotation of rotating member with given interval, intercommunicating pore is arranged and be formed at diametrically circumferential position with the blade groove skew along sense of rotation with given interval on, thereby arrive its another axial end by an one axial end through rotating member; With
Rotatably hold rotating member therein and have fuel suction inlet (112,352), fuel row mouthful (124,364) and pump channel (110﹠amp; 120,350﹠amp; 360) mould component (13﹠amp; 16,320﹠amp; 324), pump channel is equipped with the initial end (113 that is communicated with the fuel suction inlet, 353) and with fuel arrange the final end (116 that mouth is communicated with, 354) and along the sense of rotation of rotating member extend to final end by initial end along blade groove, thereby the rotation by rotating member is sucked fuel by the fuel suction inlet, pressurization and mouthful discharge in pump channel by row
Wherein, the fuel row degree of lip-rounding is formed on axial end one side of rotating member, and
Formation is positioned at the pump channel (110 on another axial end one side of rotating member, 350) conduit wall (14 of final end, 322) has the guide portion (15,356) that is used for by guide fuel towards the circumferential position of intercommunicating pore towards the circumferential position court of blade groove.
2. petrolift as claimed in claim 1, wherein:
Blade groove (23) is formed near the excircle of rotating member (20),
Intercommunicating pore (24) is formed at the circumferential position that is positioned at the blade groove inboard diametrically, and
Guide portion (15) guiding fuel radially flows to circumferential position towards intercommunicating pore inwardly by the circumferential position towards blade groove.
3. petrolift as claimed in claim 1, wherein:
Intercommunicating pore (334) is formed near the excircle of rotating member (330),
Blade groove (332) is formed at the circumferential position that is positioned at the intercommunicating pore inboard diametrically, and
Guide portion (356) guiding fuel radially flows to position towards intercommunicating pore outwardly by the circumferential position towards blade groove.
4. petrolift as claimed in claim 1, wherein at least a portion guide portion comprise by towards the circumferential position of blade groove towards conduit wall side that the circumferential position towards intercommunicating pore guides gradually and smoothly (15a, 356a).
5. petrolift as claimed in claim 4, wherein (15a 356a) makes circular arc in the conduit wall side.
6. petrolift as claimed in claim 1, the small end of the cross sectional area that wherein is positioned at the final end (116,354) of pump channel (110,350) on another axial end one side of rotating member along the sense of rotation of rotating member towards its final end diminishes gradually.
7. petrolift comprises:
Have a plurality of blade grooves (23,332) and a plurality of intercommunicating pore (24,334) rotating member (20,330), blade groove is formed on the axial end and another axial end of rotating member respectively along the sense of rotation of rotating member with given interval, intercommunicating pore is arranged and be formed at diametrically circumferential position with the blade groove skew along sense of rotation with given interval on, thereby arrive its another axial end by an one axial end through rotating member; With
Rotatably hold rotating member therein and have fuel suction inlet (112,352), fuel row mouthful (124,364) and pump channel (110﹠amp; 120,350﹠amp; 360) mould component (13﹠amp; 16,320﹠amp; 324), pump channel is equipped with the initial end (113 that is communicated with the fuel suction inlet, 353) and with fuel arrange the final end (116 that mouth is communicated with, 354) and along the sense of rotation of rotating member extend to final end by initial end along blade groove, thereby the rotation by rotating member is sucked fuel by the fuel suction inlet, pressurization and mouthful discharge in pump channel by row, wherein:
The fuel row degree of lip-rounding is formed on axial end one side of rotating member, and
The small end of cross sectional area along the sense of rotation of rotating member towards its final end that is positioned at pump channel (110, the 350) final end of another axial end one side of rotating member diminishes gradually.
8. petrolift as claimed in claim 7, wherein:
Blade groove (23) is formed near rotating member (20) excircle, and
Intercommunicating pore (24) is formed at the circumferential position that is positioned at the blade groove inboard diametrically.
9. petrolift as claimed in claim 7, wherein:
Intercommunicating pore (334) is formed near rotating member (330) excircle, and
Blade groove (332) is formed at the circumferential position that is positioned at the intercommunicating pore inboard diametrically.
10. petrolift as claimed in claim 7 wherein is positioned at each the pump channel (110﹠amp of both sides on an axial end and another axial end; 120,350﹠amp; 360) direction along intercommunicating pore and blade groove skew broadens in initial end (113,353) and final end (116,354), and each initial end and final end just can be towards blade groove and intercommunicating pores like this.
11. petrolift as claimed in claim 1, wherein:
Be positioned at the pump channel (120 of axial end one side of rotating member, 360) along the direction of intercommunicating pore and blade groove skew in initial end (113,353) and final end (116,354) broaden, being positioned at each initial end on axial end one side of rotating member and final end so just can be towards blade groove and intercommunicating pore, and
Be positioned at the pump channel (110 of another axial end one side of rotating member, 350) along the direction of intercommunicating pore and blade groove skew in initial end (113,353) broaden, the initial end that is positioned at like this on another axial end one side of rotating member just can be towards blade groove and intercommunicating pore.
12. as claim 10 or 11 described petrolifts, wherein fuel suction inlet (112,352) is formed on another axial end one side of rotating member.
13., wherein on each axial end of rotating member, formed and the corresponding intercommunicating pore of blade groove as claim 1 or 7 described petrolifts.
14., wherein near each axial end upper blade groove of rotating member, form intercommunicating pore and be provided with next door (25,335) therebetween as claim 1 or 7 described petrolifts.
15. as claim 1 or 7 described petrolifts, wherein on each axial end of rotating member, intercommunicating pore equates with the number of blade groove, and among an axial end and another axial end, have at least one to have communication passage (26,336), blade groove links to each other with intercommunicating pore by communication passage.
16. as claim 1 or 7 described petrolifts, wherein have at least one to have communication passage (26,336) among axial end of rotating member and another axial end, blade groove links to each other with intercommunicating pore by communication passage.
17., wherein be formed at a blade groove on the axial end and be formed at blade groove on another axial end along the skew of the sense of rotation of rotating member as claim 1 or 7 described petrolifts.
18. petrolift as claimed in claim 1, wherein rotating member has the annular portion (21,338) that centers on each blade groove excircle continuously.
19. petrolift as claimed in claim 7, wherein rotating member has the annular portion (21,338) that centers on each blade groove excircle continuously.
20. as claim 18 or 19 described petrolifts, the pump channel that wherein is formed on axial end of rotating member and another axial end both sides is communicated with the blade groove that forms on axial end of rotating member and another axial end independently of one another and respectively.
21. as claim 1 or 7 described petrolifts, the blade groove that wherein is formed on axial end of rotating member is isolated to prevent that fuel from directly flowing betwixt with the blade groove that is formed on its another axial end.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP137070/2003 | 2003-05-15 | ||
| JP2003137070 | 2003-05-15 | ||
| JP065264/2004 | 2004-03-09 | ||
| JP2004065264A JP2004360678A (en) | 2003-05-15 | 2004-03-09 | Fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550677A true CN1550677A (en) | 2004-12-01 |
| CN100368688C CN100368688C (en) | 2008-02-13 |
Family
ID=33422140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100431884A Expired - Fee Related CN100368688C (en) | 2003-05-15 | 2004-05-14 | Fuel pump |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20040228721A1 (en) |
| JP (1) | JP2004360678A (en) |
| CN (1) | CN100368688C (en) |
| DE (1) | DE102004024116A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462546C (en) * | 2005-12-28 | 2009-02-18 | 本田技研工业株式会社 | Fuel pump module |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101081707B1 (en) | 2010-04-19 | 2011-11-09 | 장금자 | Pump for exclusive use in concentrated slurry |
| US9249806B2 (en) | 2011-02-04 | 2016-02-02 | Ti Group Automotive Systems, L.L.C. | Impeller and fluid pump |
| KR101156783B1 (en) | 2011-09-02 | 2012-06-25 | 장금자 | Pump for exclusive use in concentrated slurry |
| JP5787177B2 (en) * | 2012-06-05 | 2015-09-30 | 株式会社デンソー | Fuel pump |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5310308A (en) * | 1993-10-04 | 1994-05-10 | Ford Motor Company | Automotive fuel pump housing with rotary pumping element |
| JP3463356B2 (en) * | 1994-06-30 | 2003-11-05 | 株式会社デンソー | Wesco pump |
| US5586858A (en) * | 1995-04-07 | 1996-12-24 | Walbro Corporation | Regenerative fuel pump |
| DE19725249C2 (en) * | 1997-06-14 | 2002-05-02 | Siemens Ag | feed pump |
| US6270310B1 (en) * | 1999-09-29 | 2001-08-07 | Ford Global Tech., Inc. | Fuel pump assembly |
| DE10013907A1 (en) * | 2000-03-21 | 2001-09-27 | Mannesmann Vdo Ag | Fuel feed pump for vehicle has small variations in angular spacing of blades |
| JP2001342983A (en) * | 2000-03-31 | 2001-12-14 | Denso Corp | Fuel pump |
| US6468027B2 (en) * | 2000-03-31 | 2002-10-22 | Denso Corporation | Fuel pump for internal combustion engine |
| US6739844B1 (en) * | 2000-06-09 | 2004-05-25 | Visteon Global Technologies, Inc. | Fuel pump with contamination reducing flow passages |
| JP2002339889A (en) * | 2001-05-16 | 2002-11-27 | Enplas Corp | Impeller for circular flow pump |
| JP3800128B2 (en) * | 2001-07-31 | 2006-07-26 | 株式会社デンソー | Impeller and turbine fuel pump |
| JP2003113750A (en) * | 2001-07-31 | 2003-04-18 | Denso Corp | Turbine type fuel pump |
-
2004
- 2004-03-09 JP JP2004065264A patent/JP2004360678A/en not_active Withdrawn
- 2004-05-14 CN CNB2004100431884A patent/CN100368688C/en not_active Expired - Fee Related
- 2004-05-14 US US10/845,241 patent/US20040228721A1/en not_active Abandoned
- 2004-05-14 DE DE102004024116A patent/DE102004024116A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462546C (en) * | 2005-12-28 | 2009-02-18 | 本田技研工业株式会社 | Fuel pump module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100368688C (en) | 2008-02-13 |
| US20040228721A1 (en) | 2004-11-18 |
| JP2004360678A (en) | 2004-12-24 |
| DE102004024116A1 (en) | 2004-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105431636B (en) | housing for scroll compressor fan | |
| US20180335049A1 (en) | Fan | |
| CN108603512A (en) | Cooling fan of engine housing shroud with not blocked outlet | |
| CN1637301A (en) | Turbo compressor | |
| CN1955493A (en) | Centrifugal fan | |
| CN104110336A (en) | Fluid pump | |
| CN101865056B (en) | Fuel pump | |
| CN1319724A (en) | Pipeline pump | |
| CN1723348A (en) | Engine-cooling fan assembly with overlapping fans | |
| TWI464329B (en) | Centrifugal fan and impeller thereof | |
| CN1462501A (en) | Rotating electrical machine, in particular alternator for motor vehicle | |
| KR102118500B1 (en) | Magnetic pump | |
| CN1680721A (en) | Impeller and fuel pump using the same | |
| CN1246172A (en) | Fuel supply system | |
| CN1072777C (en) | Full circumference flow pump group and its producing method | |
| CN104011394B (en) | Propeller pump and pumping plant | |
| CN1550677A (en) | Fuel pump | |
| CN1199146A (en) | Machine set for transporting fuel from fuel tank to IC engine for automobile | |
| KR101177293B1 (en) | Turbine fuel pump for vehicle | |
| CN1191431C (en) | Turbine fuel Pump | |
| CN205823740U (en) | Make the inhalation mask that the intake performance of pump is improved and the pump possessing this cover | |
| CN109798259B (en) | High-speed fan motor | |
| CN1975171A (en) | Pump | |
| US20200291954A1 (en) | Centrifugal Pump | |
| CN1651769A (en) | Delivery system |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20100514 |