CN107956619B - Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof - Google Patents
Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof Download PDFInfo
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- CN107956619B CN107956619B CN201711193762.8A CN201711193762A CN107956619B CN 107956619 B CN107956619 B CN 107956619B CN 201711193762 A CN201711193762 A CN 201711193762A CN 107956619 B CN107956619 B CN 107956619B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
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Abstract
The invention discloses a rotational flow atomization structure of a single-hole atomization oil sprayer. The top end of the valve seat is provided with a first mounting groove, the bottom end of the valve seat is provided with a second mounting groove, the first mounting groove and the second mounting groove are communicated with each other through a valve hole, the vortex sheet is tightly attached to the bottom surface of the second mounting groove, and the metering sheet is tightly attached to the bottom surface of the vortex sheet; the swirl sheet is provided with swirl holes, and the metering sheet is provided with metering holes; the swirl vanes are provided with a plurality of swirl grooves. After the fluid passes through the valve opening, with the fluid bunch striking formation turbulent flow under the effect of whirl groove, perhaps along the whirl of whirl groove direction distribution, during later rethread metering hole, the atomization effect will obtain obviously promoting, and liquid atomization is more thorough, and the particle size of atomizing is more meticulous, and fuel atomization effect obtains improving, is favorable to mixing with the air and fully burns, avoids the carbon deposit in the jar, improves vehicle emission cleanliness. The invention also discloses a single-hole atomization oil sprayer which has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of oil injectors, in particular to a rotational flow atomization structure of a single-hole atomization oil injector. The invention also relates to a single-hole atomizing oil sprayer comprising the rotational flow atomizing structure.
Background
With the development of the Chinese machinery industry, more and more mechanical devices are widely used.
In the automobile industry, the variety of automobile parts is thousands of, taking an engine fuel injector as an example. The fuel injector belongs to a fuel injection system, and the fuel injection system refers to a fuel supply device which directly injects a certain amount of fuel into a cylinder or an air inlet channel by using an oil injector under a certain pressure. Depending on the type of fuel to be injected, the fuel injection system may be classified into a gasoline injection system, a diesel injection system, a gaseous fuel injection system, and the like. The control method can be divided into a mechanical control type, an electronic control type and an electromechanical hybrid control type.
Electronically controlled fuel injectors have become popular. The fuel injector receives the fuel injection pulse signal sent by the ECU and accurately controls the fuel injection quantity. The spray characteristics of the fuel injector include atomization particle size, oil mist distribution, oil beam direction, range, diffusion cone angle, and the like. The types of fuel injectors are various, and parts on the fuel injectors are complex, so that the atomization structure is an important ring for the electric control fuel injector.
In the prior art, an atomization structure of an electric control fuel injector mainly comprises a valve body, a valve hole (or a spray hole) and the like, when a valve core on a valve seat is lifted by an electromagnetic driving mechanism or other equivalent driving mechanisms, fuel such as gasoline and the like passes through the valve hole, and the diameter of the valve hole is very small and can reach 10-4m magnitude, when the pressure suddenly increases when the fuel oil passes through, the liquid fuel oil generates an atomization effect to form a large amount of micro atomized particles which are flushed into the cylinderThe combustion chamber is in good contact and mixing with air, and the combustion efficiency is improved. However, in the electric control oil injector in the prior art, because the spray holes are circular or annular, the fuel oil atomization effect is poor, the particle size of atomized particles is large, liquid beams are easy to form, and the atomization fineness is low.
Therefore, how to improve the fineness of fuel atomization, refine the particle size of atomized particles, and improve the fuel atomization effect is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a rotational flow atomization structure of a single-hole atomization oil sprayer, which can improve the atomization fineness of fuel oil, refine the particle size of atomized particles and improve the atomization effect of the fuel oil. Another object of the invention is to provide a single-hole atomizing fuel injector comprising the swirl atomizing structure.
In order to solve the technical problem, the invention provides a rotational flow atomization structure of a single-hole atomization fuel injector, which comprises a pipe body and a valve seat arranged in the pipe body, wherein a first mounting groove for accommodating a valve core is formed in the top end of the valve seat;
the metering sheet is provided with a metering hole for atomizing fluid when the fluid passes through the metering hole in the opening range of the swirl hole;
the swirl plate is provided with a plurality of swirl grooves which are communicated with the swirl holes and used for generating scattering turbulence when fluid passes through the swirl holes in the circumferential direction of the swirl holes.
Preferably, the valve hole set up in the centre of a circle position of first mounting groove and second mounting groove, the whirl hole set up in the centre of a circle position of spinning disk, the metering hole set up in the centre of a circle position of metering disk, just the centre of a circle collineation of valve hole, whirl hole and metering hole three.
Preferably, the diameter of the spinning disk is the same as that of the metering disk, and the outer edges of the spinning disk and the metering disk abut against the side wall of the second mounting groove.
Preferably, the swirl grooves are arranged on the swirl plates at 2-5 times, and the swirl grooves are uniformly distributed along the circumferential direction of the swirl holes.
Preferably, each swirl groove is a rectangular groove, and the length direction of each swirl groove is tangent to the swirl hole.
Preferably, the width of each swirl groove is 0.1-2 mm.
Preferably, the diameter of the swirl hole is 0.3-2 mm, and the diameter of the metering hole is 0.1-2 mm.
Preferably, the thickness of the spinning plate and the thickness of the metering plate are both 0.1-0.5 mm.
The invention further provides a single-hole atomizing oil sprayer which comprises a shell and a rotational flow atomizing structure arranged in the shell, wherein the rotational flow atomizing structure is specifically any one of the rotational flow atomizing structures.
The invention provides a rotational flow atomization structure of a single-hole atomization oil sprayer. Wherein the tube body is generally a housing of the single-hole atomizing fuel injector. The valve seat, the spinning disk and the metering disk are all arranged in the tube body. The top of disk seat is provided with first mounting groove, and the bottom is provided with the second mounting groove, and is provided with the valve opening between the two and realizes the intercommunication of each other. The first mounting groove of disk seat is used for installing the case, and the second mounting groove is used for installing spinning disk and measurement piece. Wherein, the spinning disk is clung to the bottom surface of the second mounting groove, and the metering sheet is clung to the bottom surface of the spinning disk. The swirl sheet is provided with swirl holes and swirl grooves, and the metering sheet is provided with metering holes. The swirl hole is positioned in the opening range of the valve hole, and the metering hole is positioned in the opening range of the swirl hole, so that fluid can smoothly pass through the metering hole from top to bottom. The aperture in metering hole is very little, pressure increases suddenly when fluid such as fuel passes through, can produce atomization effect, and each whirl groove sets up in the circumference in whirl hole, after fluid passes through the valve opening, some fluid passes through whirl hole, another part fluid passes through whirl groove, nevertheless whirl tank bottom is owing to receiving sheltering from of metering plate, this part fluid will produce violent scattering rapidly after striking whirl tank bottom, thereby to other part fluid production impact, fluid beam striking behind the valve opening forms the turbulent flow, perhaps along the whirl of whirl groove direction distribution. So, form behind the fluid beam rethread metering orifice of turbulent flow or whirl, the atomization effect will obtain obviously promoting, and liquid atomization is more thorough, and the atomizing particle granularity is more meticulous, and the fuel atomization effect obtains the improvement, when being applied to engine cylinder, is favorable to mixing with the air and fully burns, avoids the carbon deposit in the jar, improves vehicle emission cleanliness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
FIG. 2 is a top view of the embodiment of the swirler shown in FIG. 1.
Fig. 3 is a top view of a specific configuration of the metering tablet shown in fig. 1.
FIG. 4 is a schematic structural diagram of a fuel injector according to an embodiment of the present invention.
Wherein, in fig. 1-4:
the valve comprises a pipe body-1, a valve seat-2, a first mounting groove-201, a second mounting groove-202, a valve hole-203, a swirl sheet-3, a swirl hole-301, a swirl groove-302, a metering sheet-4, a metering hole-401 and a valve core-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In a specific embodiment provided by the invention, the rotational flow atomization structure of the single-hole atomization oil sprayer mainly comprises a pipe body 1, a valve seat 2, a rotational flow sheet 3 and a metering sheet 4.
Wherein, body 1 generally is the casing of haplopore atomizing sprayer, can be pipe or cylindric, and disk seat 2, spinning disk 3 and measurement piece 4 all set up in body 1.
The top of valve seat 2 is provided with first mounting groove 201, and the bottom is provided with second mounting groove 202, and is provided with valve opening 203 between the two and realizes intercommunication each other. The first mounting groove 201 of the valve seat 2 is used for mounting the valve core 5, and the second mounting groove 202 is used for mounting the spinning disk 3 and the metering disk 4.
As shown in fig. 2 and 3, fig. 2 is a top view of the structure of the spinning disk shown in fig. 1, and fig. 3 is a top view of the structure of the metering disk shown in fig. 1.
The spinning disk 3 is tightly attached to the bottom surface of the second mounting groove 202, and the metering disk 4 is tightly attached to the bottom surface of the spinning disk 3. The swirl plate 3 is provided with swirl holes 301 and swirl grooves 302, and the metering plate 4 is provided with metering holes 401. The swirl hole 301 is located in the opening range of the valve hole 203, and the metering hole 401 is located in the opening range of the swirl hole 301, so that fluid can smoothly pass through from top to bottom.
The aperture of the metering hole 401 is very small, and atomization effect is generated when fluid such as fuel oil passes through, and each swirl groove 302 is arranged in the circumferential direction of the swirl hole 301, after the fluid passes through the valve hole 203, one part of the fluid passes through the swirl hole 301, the other part of the fluid passes through the swirl groove 302, but the bottom of the swirl groove 302 is not through, and the part of the fluid quickly generates violent scattering after impacting the swirl groove 302, so that impact is generated on the rest part of the fluid, and a fluid beam after passing through the valve hole 203 impacts to form turbulence or swirl distributed along the direction of the swirl groove 302. So, form behind the fluid beam rethread metering orifice 401 of turbulent flow or whirl, the atomization effect will obtain obviously promoting, and liquid atomization is more thorough, and the particle size of atomizing is more meticulous, and fuel atomization effect obtains the improvement, when being applied to engine cylinder, is favorable to mixing with the air and fully burns, avoids the carbon deposit in the jar, improves vehicle emission cleanliness.
In a preferred embodiment of the valve hole 203, the swirl hole 301 and the metering hole 401, the valve hole 203 may be specifically disposed at the center of the first mounting groove 201 and the second mounting groove 202, while the swirl hole 301 may be disposed at the center of the swirl plate 3, and the metering hole 401 may be disposed at the center of the metering plate 4, and at the same time, the centers of the three are collinear. So set up, valve opening 203, whirl hole 301 and the three of measurement hole 401 will be arranged into a line on vertical to can all be located the axis of body 1. Of course, the valve hole 203, the swirl hole 301 and the metering hole 401 are not necessarily in the middle position at the positions on the body where the three are respectively located, and the distribution relationship of the three in the vertical direction is not necessarily in a straight line, and the three can be staggered by a certain angle, and certainly, the three must ensure that a common projection area exists on the horizontal plane, so that the fluid can smoothly flow from top to bottom layer by layer.
In a preferred embodiment of the swirl grooves 302, 2 to 5 swirl grooves 302 may be simultaneously provided on the swirler plate 3, and each swirl groove 302 may be uniformly distributed along the circumferential direction of the swirl hole 301. For example, 3 swirl slots 302 are simultaneously arranged on the swirl plate 3, so that the included angle between the circle centers of two adjacent swirl slots 302 is 120 °, and the rest of swirl slots 302 are analogized. Of course, a non-uniform distribution of the individual swirl slots 302 is equally feasible.
Further, each swirl groove 302 may be rectangular, and the length direction thereof is tangential to the swirl hole 301. So set up, when the fluid beam produced the scattering at the bottom of striking whirl groove 302, compare in remaining relative position relation, will be favorable to the fluid of scattering out to form the stable whirl of distribution angle rapidly, the whirl forms speed faster, and whirl distribution angle is more stable. Of course, the longitudinal direction of each swirl groove 302 may be deviated from the tangential direction of the swirl hole 301 by a certain angle.
Furthermore, in order to ensure that the swirling flow can be formed in the swirling flow grooves 302 in a sufficient proportion, the groove width of each swirling flow groove 302 can be set to be 0.1-2 mm. Of course, this data can be flexibly adjusted in the face of different fluids or different spray requirements.
In addition, the diameter of the swirl holes 301 can be generally 0.3-2 mm, the diameter of the metering holes 401 can be generally 0.1-2 mm, and the diameter of the swirl holes 301 is generally larger than that of the metering holes 401. As for the diameter of the valve hole 203, it may be generally larger than the distance from the outermost end of the swirl groove 302 to the center of the swirler 3.
Meanwhile, the thickness of the spinning disk 3 and the thickness of the metering disk 4 can be equal, and are generally 0.1-0.5 mm. And the diameters of the spinning disk 3 and the metering disk 4 can be the same, and the outer edges of the spinning disk 3 and the metering disk 4 abut against the side wall of the second mounting groove 202.
As shown in fig. 4, fig. 4 is a schematic structural diagram of a fuel injector according to an embodiment of the present invention.
This embodiment still provides a single-hole atomizing sprayer, mainly includes the shell and sets up the whirl atomizing structure in the shell, and wherein, this whirl atomizing structure is the same with above-mentioned relevant content, and the no longer repeated description here. It should be noted that the rotational flow atomization structure in this embodiment may not only be applied to a fuel injector of an engine combustion system, but also be applied to metering and atomizing of a urea solution in an engine exhaust emission system.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A rotational flow atomization structure of a single-hole atomization fuel injector comprises a pipe body (1) and a valve seat (2) arranged in the pipe body, wherein a first mounting groove (201) used for accommodating a valve core (5) is formed in the top end of the valve seat (2), the rotational flow atomization fuel injector is characterized by further comprising a rotational flow sheet (3) and a metering sheet (4), a second mounting groove (202) is formed in the bottom end of the valve seat (2), the first mounting groove (201) is communicated with the second mounting groove (202) through a valve hole (203), the rotational flow sheet (3) is tightly attached to the bottom surface of the second mounting groove (202), and the metering sheet (4) is tightly attached to the bottom surface of the rotational flow sheet (3);
a swirl hole (301) is formed in the opening range of the valve hole (203) on the swirl plate (3), and a metering hole (401) for atomizing fluid when the fluid passes through is formed in the opening range of the swirl hole (301) on the metering plate (4);
a plurality of swirl grooves (302) which are communicated with the swirl holes (301) and have non-through bottoms are formed in the swirl plates (3) in the circumferential direction of the swirl holes, and the swirl grooves (302) are used for scattering fluid when the fluid impacts the swirl holes (301) so as to form turbulence on impact of the fluid beams passing through the swirl holes (301);
whirl groove (302) are in be provided with 2 ~ 5 simultaneously on spinning disk (3), and each whirl groove (302) are followed the circumference evenly distributed of whirl hole (301).
2. The rotational flow atomization structure of claim 1, wherein the valve hole (203) is arranged at the center of the first installation groove (201) and the second installation groove (202), the rotational flow hole (301) is arranged at the center of the rotational flow sheet (3), the metering hole (401) is arranged at the center of the metering sheet (4), and the centers of the valve hole (203), the rotational flow hole (301) and the metering hole (401) are collinear.
3. The swirl atomization structure of claim 2, characterized in that the swirl plate (3) and the metering plate (4) have the same diameter, and the outer edges thereof abut against the side wall of the second mounting groove (202).
4. A swirling atomizing structure according to claim 3, characterized in that each of said swirling grooves (302) is a rectangular groove and its length direction is tangential to said swirling hole (301).
5. The swirling atomizing structure according to claim 4, wherein the width of each swirling groove (302) is 0.1-2 mm.
6. The swirling atomizing structure according to claim 5, wherein the diameter of the swirling hole (301) is 0.3 to 2mm, and the diameter of the metering hole (401) is 0.1 to 2 mm.
7. A cyclone atomization structure according to claim 6, characterized in that the thickness of each of the cyclone sheet (3) and the metering sheet (4) is 0.1-0.5 mm.
8. A single-hole atomizing oil sprayer comprises a shell and a rotational flow atomizing structure arranged in the shell, and is characterized in that the rotational flow atomizing structure is specifically the rotational flow atomizing structure of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193762.8A CN107956619B (en) | 2017-11-24 | 2017-11-24 | Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193762.8A CN107956619B (en) | 2017-11-24 | 2017-11-24 | Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof |
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| Publication Number | Publication Date |
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| CN107956619A CN107956619A (en) | 2018-04-24 |
| CN107956619B true CN107956619B (en) | 2020-07-07 |
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| CN201711193762.8A Active CN107956619B (en) | 2017-11-24 | 2017-11-24 | Single-hole atomizing oil sprayer and rotational flow atomizing structure thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661836A (en) * | 2018-06-22 | 2018-10-16 | 广西卡迪亚科技有限公司 | A kind of fuel injector and its novel atomized structure big flow eddy flow composite structure |
| CN111425322B (en) * | 2020-03-30 | 2021-07-06 | 广西松浦电子科技有限公司 | Low-noise oil sprayer special for motorcycle |
| CN113153595B (en) * | 2021-03-28 | 2022-02-25 | 南岳电控（衡阳）工业技术股份有限公司 | Low hydraulic swirl injector |
| CN114962100B (en) * | 2022-06-07 | 2023-04-25 | 一汽解放汽车有限公司 | Biphase premixing injector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2117948U (en) * | 1991-10-31 | 1992-10-07 | 国营白云家用电器总厂 | Internal rotation type atomization nozzle with three hole |
| US5570841A (en) * | 1994-10-07 | 1996-11-05 | Siemens Automotive Corporation | Multiple disk swirl atomizer for fuel injector |
| US6296199B1 (en) * | 1998-08-27 | 2001-10-02 | Robert Bosch Gmbh | Fuel injection valve |
| CN2557811Y (en) * | 2002-08-06 | 2003-06-25 | 重庆大学 | Low pressure fuel atomizing nozzle |
| CN201140125Y (en) * | 2007-12-13 | 2008-10-29 | 张敏寿 | Atomizing nozzle |
| CN201763489U (en) * | 2010-09-08 | 2011-03-16 | 柳州源创电喷技术有限公司 | Single-hole atomization solenoid valve type precise oil sprayer |
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