CN104791161A - Steam and liquid separating device and electronic liquid spraying unit with steam and liquid separating device - Google Patents
Steam and liquid separating device and electronic liquid spraying unit with steam and liquid separating device Download PDFInfo
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- CN104791161A CN104791161A CN201410022093.8A CN201410022093A CN104791161A CN 104791161 A CN104791161 A CN 104791161A CN 201410022093 A CN201410022093 A CN 201410022093A CN 104791161 A CN104791161 A CN 104791161A
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Abstract
The invention discloses a steam and liquid separating device and an electronic liquid spraying unit with the steam and liquid separating device, and belongs to the technical field of engines. The steam and liquid separating device comprises a body with a steam and liquid separating chamber, an exhaust way communicated with the steam and liquid separating chamber, a liquid outlet way and a liquid returning way, wherein the exhaust way, the liquid outlet way and the liquid returning way are communicated with the steam and liquid separating chamber. The device comprises a cup body which can be connected with and separated from the body, a liquid inlet way, a filter and a liquid supply channel, wherein the cup body is connected with the body to form a sewage storage chamber; the liquid inlet way is connected with the steam and liquid separating chamber and the sewage storage chamber, and the filter is located in the sewage storage chamber and covers an inlet of the liquid inlet way; the liquid supply channel leads to the sewage storage chamber, and the exhaust way and the liquid supply channel can be designed and arranged in a manner that steam and liquid double-direction flowing can be effectively carried out. The steam and liquid separating device has the advantages of being small in size, light, simple in structure, good in processing property and rapid and convenient to dismount and mount.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to electrically powered liquid spraying equipment, particularly relate to a kind of vapor-liquid separating device of internal-combustion engine electric liquid ejecting system and comprise the electrospray unit of vapor-liquid separating device of being applied in.
Background technique
The work of electronically controlled Liquid inject technology combustion motor and the control of toxic emission all most important.Modern Internal-Combustion Engine needs electronically controlled liquid injection system to provide liquid usually, need electronically controlled liquid injection system, such as: fuel system fuel oil being sprayed into engine inlets is referred to as tuned port injection PI(port injection), by fuel oil, the fuel system directly sprayed in cylinder is referred to as in-cylinder direct injection DI(direct injection), reducing the SCR(Selective Catalytic Reduction of nitrogen oxides emission) system needs to spray aqueous solution of urea (add-blue) and enters outlet pipe, diesel particulation flutters the regeneration of catching device DPF (diesel particulate filter) system needs injected fuel to enter outlet pipe etc.
But no matter be liquid fuel or aqueous solution of urea, all can produce steam in ejecting system, the impurity that also having affects injection apparatus exists.
Chinese patent " a kind of filtrating type vapor-liquid separating device " (patent No.: 200810059700.2) disclose a kind of vapor-liquid separating device, it is characterized in that, the entrance of liquid is positioned among fuel tank, liquid filter be closed in there is vapor-liquid separation exchange volume among.The advantage of this structure is not need a dirt apotheca, and fuel tank itself possesses this function, but its shortcoming is also fairly obvious: among the fluid box that part-structure must be installed, installation is restricted, and the replacing of liquid filter is also inconvenient.
For liquid injection system, the function of vapor-liquid separator is for electronic injector provides the single-phase liquid disturbed without vapour phase liquid, in scheme disclosed in, vapor-liquid separator and electronic injector are arranged all respectively and are installed, arrange more flexible although it is so, but manufacture cost is high, use and installation cost also higher, even use loaded down with trivial details and be not easy to keep in repair.
Summary of the invention
The present invention is directed to the problems referred to above, object be to provide a kind of compact structure, be convenient to install, be convenient to keep in repair vapor-liquid separating device and comprise the liquid ejection unit of vapor-liquid separating device.
For achieving the above object, the present invention takes following technological scheme: i.e. a kind of vapor-liquid separating device, comprise a main body containing vapor-liquid separation chamber, with the air outlet flue of UNICOM of vapor-liquid separation chamber, with tapping channel and time fluid passage of UNICOM of vapor-liquid separation chamber, comprise one to connect and the cup be separated with main body, cup and main body are connected to form dirt apotheca, the liquid inlet channel of a connection vapor-liquid separation chamber and dirt apotheca, one is positioned at dirt apotheca and hides the filter of liquid inlet channel entrance, a liquid feeding channel leading to dirt apotheca, described air outlet flue and liquid feeding channel are according to patten's design and the layout that effectively can carry out vapour-liquid two-way flow.
Effectively can carry out vapour-liquid two-way flow and refer to that vapour phase can flow in the opposite direction of liquid phase flowing simultaneously.The primary condition realizing vapour-liquid two-way flow mainly circulation area and runner move towards the certain requirement of demand fulfillment, circulation area is larger, more be conducive to vapour-liquid two-way flow, runner is arranged more close to Vertical direction, more be conducive to vapour-liquid two-way flow, runner is turned fewer, and angle of turn is less, is more conducive to realizing vapour-liquid two-way flow.
The parameter size realizing vapour-liquid two-way flow concrete is relevant to the physical property of liquid, and for capillary liquid, the circulation area of needs is comparatively large, and the circulation area that such as water realizes vapour-liquid two-way flow than gasoline is large.
For liquid feeding channel, circulation area is not less than 20 square millimeters; For air outlet flue, circulation area is not less than 10 square millimeters.
A kind of electric liquid injection unit containing above-mentioned vapor-liquid separator, comprise the pump housing that contains electromagnetic actuator device and plunger pump, plunger pump comprises plunger bushing and plunger, an intake chamber, a liquid valve, a hyperbaric chamber between liquid valve and plunger, a hyperbaric chamber being positioned at liquid valve downstream, the opened by pressure formula nozzle in a connection hyperbaric chamber, the pump housing comprises vapor-liquid separating device, a liquid backflow hole being positioned at pump housing top, an inlet opening being positioned at pump housing bottom, inlet opening connects the tapping channel of vapor-liquid separating device, liquid backflow hole connects time fluid passage of vapor-liquid separating device.
Further, the above-mentioned electric liquid injection unit containing vapor-liquid separator, comprises a high-pressure transfusion tube, and high-pressure transfusion tube connects hyperbaric chamber and opened by pressure formula nozzle.
Above-mentioned vapor-liquid separating device needs on one side connection liquid storage tank when applying, another side needs to connect certain electronically controlled final controlling element, its function provides not containing the working liquid body of vapour phase composition by tapping channel to described electronically controlled final controlling element, such as fuel oil or add-blue, untapped remaining liq is turned back to vapor-liquid separation chamber by returning fluid passage by final controlling element, gas componant in vapor-liquid separation chamber is discharged to the top of liquid storage tank, and liquid storage tank constantly supplements the liquid be consumed to vapor-liquid separation.The normal mounting attitude of described vapor-liquid separating device is: air outlet flue and return fluid passage and to be connected the top that must be positioned at vapor-liquid separation chamber or the position close to top with vapor-liquid separation chamber, air outlet flue will lead to the top of liquid storage tank, in order to preventing pollution thing directly enters You Qi separation chamber on the one hand, be conducive on the other hand being formed the drop with liquid feeding channel entrance, thus be conducive to gas and discharge vapor-liquid separation chamber in time; In addition, the entrance of tapping channel is positioned at the position relatively going back to fluid passage bottom of vapor-liquid separation chamber.
The volume of vapor-liquid separation chamber must be greater than the minimum volume that can realize vapor-liquid separation, the minimum volume of described vapor-liquid separation chamber is relevant to the generation rate of steam, steam production is higher, need the volume of the vapor-liquid separation chamber of preparation larger, the physical property of steam production and working liquid body, ambient temperature is relevant with the heat dissipation rate of electronic actuators.
The concept that the present invention describes the relative liquid phase operation materials such as mentioned vapour phase working liquid body and gas componant does not have essential difference.
Foregoing invention thought can be further illustrated by following specific embodiment and application example.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is the first example structure schematic diagram of vapor-liquid separating device provided by the invention;
Fig. 2 is the second example structure schematic diagram of vapor-liquid separating device provided by the invention;
Fig. 3 is the electric liquid injection unit first example structure schematic diagram containing vapor-liquid separating device provided by the invention;
Fig. 4 is the electric liquid injection unit second example structure schematic diagram containing vapor-liquid separating device provided by the invention;
Fig. 5 is the application example schematic diagram of vapor-liquid separating device second embodiment provided by the invention;
Fig. 6 is the application example schematic diagram of vapor-liquid separating device first embodiment provided by the invention;
Fig. 7 is the application example of electric liquid injection unit first embodiment containing vapor-liquid separating device provided by the invention.
Embodiment
As shown in Figure 1, in the first example structure schematic diagram, vapor-liquid separating device provided by the present invention comprises: a main body 10, main body 10 and end cap 10a form vapor-liquid separation chamber 11 jointly, one with the air outlet flue 12 of top UNICOM of vapor-liquid separation chamber 11, with tapping channel 13 and time fluid passage 14 of UNICOM of vapor-liquid separation chamber 11, a cup 15, can be threaded connection between cup 15 and main body 10, dirt apotheca 16 is formed after connecting, the liquid inlet channel 17 of a connection vapor-liquid separation chamber 11 and dirt apotheca 16, one is positioned at dirt apotheca 16 and hides the filter 18 of liquid inlet channel entrance 17a, a liquid feeding channel 19 leading to dirt apotheca 16, cup 15 comprises a limiting stopper 15a, move axially for limiting filter 18, come off from liquid inlet channel entrance 17a to prevent it.
Above-mentioned parts can be made up of the mode of plastics by mold pressing, and main body 10 and end cap 10a can be threaded connection, and also can stick with glue the mode of adopting or welding and connect.
When working medium is gasoline, the circulation area of described air outlet flue 12 and liquid feeding channel 19 is all greater than 36 square millimeters, and liquid feeding channel 19 is from vertical duction substantially horizontal UNICOM dirt apotheca 16, use when such design can ensure that ambient temperature is less than 80 degrees Celsius.Identical design is also adapted to aqueous solution of urea add-blue.
Vapor-liquid separation chamber 11 is spaces with a constant volume.When liquid and vapor capacity material occupies the space of vapor-liquid separation chamber 11 simultaneously, under static state, vapor species will occupy its upper space, and liquid phase substance then occupies lower space, and the operation material therefore exported from tapping channel is simple liquid phase.But, in normal working conditions, operation material is in flowing state, fluid is from vapor-liquid separation chamber's stream 11 to tapping channel 13, when the speed of described flowing is greater than certain value, likely there is reversing motion in vapour phase operation material, namely from the ionized motion of vapor-liquid separation chamber 11 to bottom, likely exports from tapping channel 13.The heterodromous appearance of vapor species is relevant at the mean velocity of vapor-liquid separation chamber 11 Vertical direction to fluid, reduces fluid at the mean velocity of vapor-liquid separation chamber 11 Vertical direction, will effectively prevent vapour phase reverse flow, thus realize the function of vapor-liquid separation.Reducing fluid is the volume increasing vapor-liquid separation chamber 11 in the effective way of the mean velocity of vapor-liquid separation chamber 11 Vertical direction, increases the volume of vapor-liquid separation chamber 11 especially by the sectional area increasing substantially horizontal.Such as, be the final controlling element of 20w for heat dissipation, operation material is gasoline, and when operating ambient temperature is about 80 degrees Celsius, vapor-liquid separation chamber 11 sectional area in the horizontal direction needs to be greater than 600 square millimeters, can effectively stop vapour phase reverse flow.
Vapor-liquid separating device working procedure:
Liquid enters dirt apotheca 16 by liquid feeding channel 19, liquid inlet channel 17 is entered after filter 18 filters, then vapor-liquid separation chamber 11 is arrived, clean liquid flows out for certain final controlling element by tapping channel 13, such as electric oil injector, after partially liq is consumed, remaining liq or liquid-vapor mixture return vapor-liquid separation chamber 11 through returning fluid passage 14, and the air in vapor-liquid separation chamber 11 and liquid vapour are then discharged by air outlet flue 12.Described liquid can be fuel oil or aqueous solution of urea etc.
As the second example structure schematic diagram that Fig. 2 is vapor-liquid separating device provided by the invention, one of difference of second embodiment provided by the invention and the first embodiment provided by the invention is: the vapor-liquid separating device main body 10 that the present embodiment provides comprises a flange 10b and flange hole 10c, and the object that main body 10 arranges flange 10b is to be convenient to described gas-liquid separation device 1 to be connected with the casing of liquid storage by flange hole 10c bolt.Two of the difference of the second embodiment provided by the invention and the first embodiment provided by the invention is: described tapping channel 13 is positioned at end cap 10a; Three of the difference of the second embodiment provided by the invention and the first embodiment provided by the invention is: described air outlet flue 12 all passes through flange 10b with liquid feeding channel 19, there is larger drop in the outlet 12a of the exhaust passage 12 and entrance 19a of liquid feeding channel 19, discharges from air outlet flue 12 to be conducive to gas.
Second embodiment of vapor-liquid separating device provided by the invention is substantially identical with the working procedure of the first embodiment of vapor-liquid separating device provided by the invention.
As Fig. 3, show the electric liquid injection unit first example structure schematic diagram containing vapor-liquid separating device provided by the invention.Described electric liquid injection unit comprises a vapor-liquid separating device 1, power part 20, plunger pump 21, opened by pressure formula nozzle 39.
Power part 20 comprises coil 28, armature 31, magnet case 27, interior magnet case 26, magnetism resistent ring 26a, armature chamber 30, and armature 31 is positioned at armature chamber 30 and can unrestricted motion vertically wherein, and armature 31 comprises one and runs through center and the armature runner 25 comprising taper hole.Magnet case 27 and armature 31 are made up of permeability magnetic material, such as pure iron etc., and magnetism resistent ring 26a is made up of non-magnet material, such as non-ferrous metal or plastics etc.
Plunger pump 21 comprises plunger 34, plunger bushing 35, outlet valve 36, hyperbaric chamber 38, plunger spring 33.Plunger bushing 35 comprises inlet opening 42, and plunger 34 can unrestricted motion in plunger bushing 35, and hyperbaric chamber 38 is the spaces marked off in plunger bushing 35 by plunger 34 and outlet valve 36.Described outlet valve 36 comprises valve member 36a and is positioned at the outlet valve seat surface 37 of plunger bushing 35 one end, fuel-displaced valve spring 40, fuel-displaced valve member 36a can be a spheroid, also can be a cone or flat board, can be made up of materials such as metal or potteries, outlet valve seat surface 37 can be the conical surface formed in plunger bushing 35 outlet port, also can be a plane, usually be formed by mach mode.
Above-mentioned, power part 20 and plunger pump 21 are combined by frame 43, and the main body 10 of described vapor-liquid separating device also can pass through injection moulding integrated molding with frame 43 simultaneously.The end cap 10a of described vapor-liquid separating device 1 comprises air outlet flue 12 and returns fluid passage 14, a pump end connection 23 is had between end cap 10a and frame 43, pump end connection 23 comprises the pump end passage 23a being communicated with armature chamber 30 and returning fluid passage 14, be provided with Sealing 24 in the joint of pump end passage 23a and armature chamber 30 to leak outside to prevent working liquid body, be provided with Sealing 22 at pump end passage 23a with the joint returning fluid passage 14 and leak outside to prevent working liquid body.Can mechanically be connected between end cap 10a with main body 10, such as buckle, gluing welding etc.Also can be connected by similar mechanical connection manner between pump end connection 23 with frame 43, or directly be fixed by end cap 10a and frame 43.End cap 10a, pump end connection 23 can be made up of plastic materials.
Main body 10 and liquid cup 15 are threaded connection and seal to avoid leaked liquid by sealing material 44; Liquid inlet channel 17 is communicated with vapor-liquid separation chamber and intake chamber 41, and intake chamber 41 is annular spaces that a plunger bushing 35 is formed with frame 43, and intake chamber 41 is interconnected by oil-through hole 29 and armature chamber 30.
Frame 43 and outlet valve 36 form hyperbaric chamber 38a, and valve member 36a and fuel-displaced valve spring 40 are positioned among the 38a of hyperbaric chamber, and fuel-displaced valve spring 40 acts between fuel-displaced valve member 36a and frame 43.
The armature 31 of power part 20 is interacted by the plunger 34 of link 32 with plunger pump 21, and link 32 to be posted by between armature 31 and plunger 34 and not to affect liquid and flowed by armature runner 25, such as a kind of U-shaped structure.Link 32 can be made up of metal or nonmetallic material, such as stainless steel or plastics.
The working procedure of above-mentioned electric liquid injection unit is as follows:
In the initial position of armature 31, plunger spring 33 is by plunger 34 and be pressed against on upper end cap 23b by link 32 by armature 31, and now inlet opening 42 is opened, and liquid enters hyperbaric chamber 38 from intake chamber 41 and makes its space be full of liquid.
The coil 28 of power part 20 can be driven by the electrical signal of PWM form.In alive situation, electromagnetic field forms magnetic gap at magnetism resistent ring 26a place, armature 31 promotes plunger 34 by link 32 and moves downward under the effect containing magnetic gap magnetic field, plunger 34 compression plunger spring 33, when the end face of plunger 34 covers inlet opening 42, liquid in hyperbaric chamber 38 is compressed and the fuel-displaced valve member 36a pushing outlet valve 36 open enters hyperbaric chamber 38a, hyperbaric chamber 38a opened by pressure formula nozzle 39 connects, when fluid pressure is higher than institute's constant-pressure, nozzle group valve in nozzle 39 is opened, and liquid ejects thereupon.
Described opened by pressure formula nozzle 39 can be a kind of common boost in pressure valve type nozzle (poppet valve), also can be another kind of as Chinese patent " a kind of ball valve nozzle " (patent No.: the outward opening ball valve nozzle 200810162100) provided, described ball valve nozzle comprises spray orifice 39a, to change injection direction more easily.
When PWM drive singal is about at coil 28 two ends institute making alive the front and back that disappear, act on the electromagnetic force of plunger 34, fluid pressure and piston spring power and inertial force etc. when mutually balancing, plunger 34 stoppings move downward, fluid pressure now in hyperbaric chamber 38 and hyperbaric chamber 38a starts to decline, when the fluid pressure in the 38a of hyperbaric chamber is lower than predetermined pressure (nozzle opens required pressure), liquid stops spraying.Meanwhile, plunger 34 starts up and gets back to initial position under the effect of plunger spring 33, outlet valve 36 cuts out thereupon, the liquid remained in the 38a of hyperbaric chamber keeps certain pressure, and the fluid pressure in hyperbaric chamber 38 sharply declines, when inlet opening 42 is opened again, liquid enters hyperbaric chamber 38 again from intake chamber 41, waits for next compression cycle.
Aforesaid liquid is the working liquid body of the electrospray unit of described oily steum separating device and oil-containing steum separating device.Liquid in intake chamber 41 from vapor-liquid separation chamber 11 and or liquid inlet channel 17, liquid from tapping channel 13 and or liquid inlet channel 17 be merged into inlet opening 18b, then intake chamber 41 is arrived, part liquid enters hyperbaric chamber 38 by inlet opening 42, another part then enters steam separation chamber 30 by oil-through hole 29, liquid backflow hole 23a is entered again by armature runner 25, then pass through back fluid passage 14 and enter vapor-liquid separation chamber 11, liquid inlet channel 17 is imported again by tapping channel 13, air in vapor-liquid separation chamber 11 and liquid vapour are then discharged by air outlet flue 12, thus ensure to flow into the liquid of intake chamber 41 close to single-phase from liquid inlet channel 17, otherwise the liquid containing vapour phase composition is once enter hyperbaric chamber 38, described electrospray unit just can not set up normal pressure in hyperbaric chamber 38, therefore also cannot normally work.
In above process, up along with plunger 34 and armature 31, liquid is with to liquid backflow hole 23a thereupon.In the reciprocatory movement of armature 31, due to the nonsymmetry of the flow coefficient of the armature runner 25 containing taper hole, the to-and-fro motion of armature 31 will cause a net flow in a direction from inlet opening 18b to liquid backflow hole 23a, the heat that drive portion 20 produces can constantly be taken away, to ensure that described injection unit can continue normal work by such flowing.
First liquid from the filtered of liquid container enter dirt apotheca 16 by liquid feeding channel 19, then by liquid inlet channel 17 vapor-liquid separation chamber 11 after filter 18 filters, or directly enter intake chamber 41 through inlet opening 18b.
In above process, the accumulation of the pollutant brought along with the liquid from liquid storage tank filtered in dirt apotheca 16, the flow resistance of filter 18 can progressively increase, when debris accumulation is to time a certain amount of, liquid cup 15 can be disassembled from body 10, after changing filter 18, install back original position again.
Fig. 4 is the electric liquid injection unit second example structure schematic diagram containing vapor-liquid separating device provided by the invention, and the electric liquid injection unit first embodiment difference structurally containing vapor-liquid separating device provided with invention is: comprise a high-pressure transfusion tube 45.Connection hyperbaric chamber, one end 38a of high-pressure transfusion tube 45, the other end connects nozzle 39.
High-pressure transfusion tube 45 comprises the first joint 47 be connected with hyperbaric chamber 38a and the second joint 48 be connected with nozzle 39, is interconnected between the first joint 47 and the second joint 48 by a high-voltage tube 49.High-voltage tube 49 can be metal tube, also can be nonmetal or metal-non-metal composite pipe, and tube wall can be one deck, also can be multilayer.
In order to be connected with high-pressure transfusion tube 45 is convenient, frame 43 and hyperbaric chamber 38a adjacent portion are provided with one and connect mouth 46, connect mouth 46 and comprise a delivery outlet 46a be communicated with hyperbaric chamber 38a.
First joint 47 can be selected nut structure and connect mouth 46 and be connected, also the fast access node structure that other can be selected general with connect mouth 46 and be connected, when selecting nut structure, high-voltage tube 49 comprises a cone joint 49a, the mode compressed by the conical surface and connect between mouth 46 and form sealing relationship.Placement between second joint 48 and nozzle 39 and the first joint and the Placement connect between mouth 46 similar.
The electrospray unit that the present embodiment provides also comprises vapor-liquid separating device 1, power part 20, plunger pump 21 and nozzle 39, and electric liquid injection unit first embodiment containing vapor-liquid separating device provided with invention is substantially identical in working principle with process.In the present embodiment, liquid is from hyperbaric chamber 38a by connecing mouth 46 and high-pressure transfusion tube 45 by force feed to opened by pressure formula EFI nozzle 39, and after reaching predetermined pressure, nozzle is opened and atomizing of liquids.
The electrospray unit that the present embodiment provides, is suitable for injecting LPG in liquefied condition and other liquid, such as DEF (diesel exhaust fluid).The present embodiment provides by high-pressure transfusion tube 45 spatially detachment dynamic portion 20(and plunger pump 21) with the structure of nozzle 39, power part 20(and plunger pump 21 can be avoided) away from nozzle 39 hot environment of work or the region of narrow space usually, be conducive to electrospray unit and normally work and property easy for installation.Such application comprises the gasoline direct system GDI (gasoline direct injection) of injected petrol, comprises the SCR system of spraying add-blue liquid, and the DS of dpf regeneration (dosing system).For the vehicle that some installing space is little, such as pedal motorcycle port fuel injection system, is also applicable to taking this separation structure.
Fig. 5 is the application example schematic diagram of vapor-liquid separating device second embodiment provided by the invention, and object of this application is a kind of Electronic Fuel Injection (EFI) unit 2, as Chinese patent ZL200510089207.1 the electron-like fuel injection apparatus that provides.
Electronic Fuel Injection (EFI) unit 2 comprises oil-feed and connects mouth 54, and oil return connects mouth 56 and nozzle 39.In this application example, the tapping channel 13 of vapor-liquid separating device second embodiment provided by the invention is connect mouth 54 with oil-feed and is connected by oil inlet hose 55, return fluid passage 14 to connect mouth 56 with oil return and be connected by oil return hose 57, fuel oil connects after mouth 54 enters Electronic Fuel Injection (EFI) unit 2 from oil-feed, part fuel oil is sprayed by nozzle 39, and Fuel Remained connects mouth 56 by oil return and turns back to vapor-liquid separation chamber 11.
Above-mentioned application also comprises a liquid storage tank 51 and liquid storage room wherein 52, the main body 10 of vapor-liquid separating device is fixed in bottom described liquid storage tank 51 by bolt 53a and nut 53b, is placed with elaxtic seal 53 to prevent fuel leakage bottom flange 10b and liquid storage tank 51.
The outlet 12a of the air outlet flue 12 and entrance 19a of liquid feeding channel 19 needs to arrange larger drop, and such as more than 200mm can not discharge vapor-liquid separation chamber in time to prevent liquid phase fuel oil.The outlet 12a of air outlet flue 12 enters the top that may arrive liquid storage tank 51 in addition, enters vapor-liquid separation chamber 11 to prevent the pollutant bottom liquid storage room 52.The air outlet flue 12 internal circulation area that this application example adopts is not less than 20 square millimeters, according to patten's design and the layout that effectively can carry out vapour-liquid two-way flow, the gas in vapor-liquid separation chamber 11 can be discharged in time.
The working procedure of the application example of described vapor-liquid separating device second embodiment is as follows:
Fuel oil in liquid storage room 52 enters dirt apotheca 16 by liquid feeding channel 19, liquid inlet channel 17 is entered again after filter 18 filters, then vapor-liquid separation chamber 11 is arrived, liquid phase fuel oil is flowed out by tapping channel 13, Electronic Fuel Injection (EFI) unit 2 is entered through oil inlet hose 55, wherein a part is sprayed by nozzle 39, and another part then returns vapor-liquid separation chamber 11 through oil return hose 57, and the air in vapor-liquid separation chamber 11 and fuel-steam are discharged via air outlet flue 12.
The fuel injection system vapor-liquid separation principle that this application example is set forth is adapted to other liquid injection systems such as SCR too.
As the application example schematic diagram that Fig. 6 is vapor-liquid separating device first embodiment provided by the invention, the first embodiment by vapor-liquid separating device provided by the present invention is applied to electronic fuel injection system.
The application of this application example is that the gasoline port that market is popularized sprays common rail system 4, comprising rotary electronic oil pump 58, oil rail 59 and pressure governor 61, comprise a liquid storage tank 51 and liquid storage room wherein 52, rotary electronic oil pump 58 comprises an oil-feed and connects mouth 54 and fuel-displacedly meet mouth 58a, oil rail, 59 comprise nozzle fuel feeding interface 60, pressure governor 61 comprises oil return and connects mouth 56, liquid storage tank 51 comprises a fuel feeding and meets mouth 19b and exhaust meets mouth 12b, tapping channel 13 connects mouth 54 by oil inlet hose 55 and oil-feed and is connected, oil return is connect mouth 56 and is connected with back oil road 14 by oil return hose 57, fuel feeding is met mouth 19b and is connected with liquid feeding channel 19 by fuel lead 62a, exhaust is met mouth 12b and is connected with air outlet flue 12 by exhaust hose 62b.
Working principle and the process of this application example are summarized as follows: the fuel oil in liquid storage room 52 enters vapor-liquid separating device 1 from oil supply gallery entrance 19a by fuel lead 62a and liquid feeding channel 19, vapor-liquid separating device 1 provides clean liquid fuel by tapping channel 13 and oil inlet hose 55 to rotary electronic oil pump 58, rotary electronic oil pump 58 provides oil supply rail 59 after being pressurizeed by fuel oil, fuel oil is supplied to oil nozzle (non-chart) by nozzle fuel feeding interface 60 by part fuel oil, another part fuel oil connects mouth 56 through pressure governor 61 from oil return, oil return hose 57 and back oil road 14 get back to vapor-liquid separating device 1, the liquid-vapor mixture matter of discharging from vapor-liquid separating device 1 enters the top of liquid storage room 52 through air outlet flue 12 and exhaust hose 62b from air outlet flue outlet 12a again, wherein the effect of pressure governor 61 keeps the pressure relative reference pressure stability in oily rail 59.
The oil supply gallery entrance 19a of this application example and air outlet flue export 12a and maintain drop large as far as possible, if there is vapour phase fuel oil in vapor-liquid separation chamber 11 like this, under the effect of difference of liquid level, vapour phase fuel oil is oppressed to be entered exhaust hose 62b and reaches the liquid level position close to liquid storage room 52.
As the application example that Fig. 7 is electric liquid injection unit first embodiment containing vapor-liquid separating device provided by the invention.Comprising the electrospray unit 5 containing vapor-liquid separating device, comprise a liquid storage tank 51 and liquid storage room wherein 52, fuel feeding is met mouth 19b and is connected with liquid feeding channel 19 by fuel lead 62a, and exhaust is met mouth 12b and is connected with air outlet flue 12 by exhaust hose 62b.
The working procedure of this application example is summarized as follows: the fuel oil in liquid storage room 52 enters electrospray unit 5 containing vapor-liquid separating device from oil supply gallery entrance 19a by fuel lead 62a and liquid feeding channel 19, entered the top of liquid storage room 52 from the vapour-liquid fuel combination of being discharged by air outlet flue 12 of the electrospray unit 5 containing vapor-liquid separating device by exhaust hose 62b and exhaust outlet 12a, thus ensure that the gas in vapor-liquid separation chamber 11 can be discharged in time.
This application example is adapted to the SCR system that operation material is aqueous solution of urea add-blue equally.
Vapor-liquid separating device provided by the invention and be not limited to above-mentioned application example containing the application of electrospray unit of vapor-liquid separating device; its application area contains gasoline port ejecting system substantially; gasoline direct system; flexible fuel ejecting system; SCR system urea solution jet system; DPF fuel vent pipe inspection regenerative systems etc., other other further scheme based on Spirit Essence of the present invention all belongs within the scope of the open and protection of the present invention.
Claims (5)
1. a vapor-liquid separating device, comprise a main body containing vapor-liquid separation chamber, with the air outlet flue of UNICOM of vapor-liquid separation chamber, with tapping channel and time fluid passage of UNICOM of vapor-liquid separation chamber, it is characterized in that: comprising one can connect and the cup be separated with main body, cup and main body are connected to form dirt apotheca, the liquid inlet channel of a connection vapor-liquid separation chamber and dirt apotheca, one is positioned at dirt apotheca and hides the filter of liquid inlet channel entrance, a liquid feeding channel leading to dirt apotheca, described air outlet flue and liquid feeding channel are according to patten's design and the layout that effectively can carry out vapour-liquid two-way flow.
2. possess the device of vapor-liquid separation function as claimed in claim 1, it is characterized in that: described liquid feeding channel circulation area is not less than 20 square millimeters.
3. possess the device of vapor-liquid separation function as claimed in claim 2, it is characterized in that: described air outlet flue circulation area is not less than 10 square millimeters.
4. an electric liquid injection unit, comprise the vapor-liquid separating device as one of claim 1-3 item, it is characterized in that: comprise the pump housing that contains electromagnetic actuator device and plunger pump, plunger pump comprises plunger bushing and plunger, an intake chamber, a liquid valve, a hyperbaric chamber between liquid valve and plunger, a hyperbaric chamber being positioned at liquid valve downstream, the opened by pressure formula nozzle in a connection hyperbaric chamber, the pump housing comprises vapor-liquid separating device, a liquid backflow hole being positioned at pump housing top, an inlet opening being positioned at pump housing bottom, inlet opening connects the tapping channel of vapor-liquid separating device, liquid backflow hole connects time fluid passage of vapor-liquid separating device.
5. electric liquid injection unit as claimed in claim 4, comprises a high-pressure transfusion tube, and high-pressure transfusion tube connects hyperbaric chamber and opened by pressure formula nozzle.
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| CN201410022093.8A CN104791161A (en) | 2014-01-20 | 2014-01-20 | Steam and liquid separating device and electronic liquid spraying unit with steam and liquid separating device |
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| CN201410022093.8A CN104791161A (en) | 2014-01-20 | 2014-01-20 | Steam and liquid separating device and electronic liquid spraying unit with steam and liquid separating device |
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