CN202673524U - Electromagnetic fuel nozzle - Google Patents
Electromagnetic fuel nozzle Download PDFInfo
- Publication number
- CN202673524U CN202673524U CN 201220287720 CN201220287720U CN202673524U CN 202673524 U CN202673524 U CN 202673524U CN 201220287720 CN201220287720 CN 201220287720 CN 201220287720 U CN201220287720 U CN 201220287720U CN 202673524 U CN202673524 U CN 202673524U
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- valve core
- shell body
- spring
- upper shell
- lower shell
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Abstract
The utility model discloses an electromagnetic fuel nozzle which comprises an upper shell body, a lower shell body, a coil framework, a valve core body and magnet yokes, wherein the upper shell body comprises an oil inlet and a spring base, the lower shell body comprises a cone-type ball valve body base and a single-hole oil-spray hole, the upper shell body and the lower shell body are connected together through a circumferential weld, and the coil framework is sleeved outside the upper shell body and the lower shell body in an interference fit mode to be a support shell body of an magnetic coil. The magnet yokes are divided into two parts and are symmetrically spot welded on the outer surfaces of the upper shell body and the lower shell body. The magnetic coil is wound on the coil framework and is arranged between the magnet yokes and the coil framework. The valve core body is composed of a valve core head, a valve core bar and a steel ball from top to bottom, wherein the valve core bar is formed by rolling of a steel board with certain thickness, one end of the valve core bar is pressed into the valve core head, and the other end of the valve core bar is connected with the steel ball in a welded mode. The upper end of the valve core head is the spring base, and a spring is arranged between the spring base of the valve core head and the spring base of the upper shell body. Gaskets are arranged between the spring bases of the upper position and the lower position and the spring to adjust pretightening force of the spring and protect the spring bases from abrasion.
Description
Technical field
The utility model relates to a kind of electromagnetism fuel nozzle of electric control fuel oil jet system, is specifically related to a kind of miniature two-stroke aeroengine that both had been applicable to, again with respect to the electronic controlled fuel nozzle of traditional electrical controlled nozzle structure optimization.
Background technique
Micro-Aviation Engine is the aircraft power plant of the domestic nearly more than ten years being devoted to develop.For, the two-stroke piston type aeroengine, multiplex in model plane or other small-sized unmanned aircraft.For improving its flying power, the electricity consumption controlled nozzle replaces traditional diaphragm type oil supplying device, is a kind of effective method.Reducing oil consumption, when improving flying power, can also greatly reduce pollutant emission, satisfied the double requirements of Economy and environmental protection.Therefore, the research and development of related electric control oil nozzle become the important content of the two-stroke aeroengine research and development with long battery life.The electronic controlled fuel nozzle that the utility model is related, on the basis of traditional electrical controlled nozzle, further simplify the structure, considered the requirement of the aspects such as economical, engineering practicability, proposed a kind of electronic controlled fuel nozzle that is applicable to miniature two-stroke aeroengine.
Summary of the invention
The purpose of this utility model provides a kind of miniature two-stroke aeroengine that both had been applicable to, and with respect to the electronic controlled fuel nozzle of traditional electrical controlled nozzle structure optimization, has advantage simple in structure, that cost is low, easy for installation again.
The technological scheme that the utility model is taked for achieving the above object is:
A kind of electromagnetism fuel nozzle is used for miniature two-stroke aeroengine, comprises upper shell, lower shell body, coil rack, valve core and yoke, it is characterized in that:
Described upper shell comprises filler opening and spring seat;
Described lower shell body comprises tapered ball valve body seat and single hole nozzle opening;
Described upper shell and links together by circumferential weld at seam crossing by positioning spigot and lower shell body transition fit together, and positioning spigot plays guiding and location;
Described coil rack is sleeved on outside upper shell and the lower shell body in the mode of interference assembling, as the carrying housing of electromagnetic coil;
Described yoke is divided into two-part, is welded in upper shell, lower shell body outer surface with the mode point of symmetry;
Described valve core is comprised of valve core head, valve core rod and steel ball from top to bottom, and one of valve core rod is pressed into valve core head, and one welds together with steel ball; Described valve core head top is spring seat, between this spring seat and the upper shell spring seat spring is set, and between upper and lower two place's spring seats and the spring pad is set.
Preferably, described tapered ball valve seat cooperates with the steel ball sphere of valve core head, and existing self contering guarantees the effect of the coaxality of valve core and lower shell body, can be beneficial to again and realize good sealing, prevents leakage of oil.Described single hole nozzle opening processing is in lower shell body bottom center, as the nozzle oil outlet.
Preferably, described valve core rod is rolled by certain thickness steel plate and forms, and the slit is left in the junction, circumferencial direction distribution circular hole, the uniformity of assurance fuel oil circumferential flow.One of valve core rod is pressed into the mounting hole of valve core head bottom with interference fit, and one welds together with steel ball, forms valve core.
Preferably, valve core head is a cirque structure, and annulus top is spring seat, the bottom is the valve core rod mounting hole, one of valve core rod is pressed into this mounting hole with interference fit, has the guiding gutter that connects valve core head around the valve core head outer ring, in order to fuel flow path and keep flow uniformity.
Preferably, as required, the guiding gutter number that can offer at valve core head is 4,6,8 ... N, wherein N is even number.
Electromagnetism fuel nozzle of the present utility model, described yoke is divided into two-part, is welded in upper shell, lower shell body outer surface with the mode point of symmetry, makes magnetic field keep circumferential uniformity, symmetry properties, magnetic force is to the active force asymmetrical load of valve core, and keeps to greatest extent this symmetry properties.
During the work of electromagnetism fuel nozzle, fuel oil flows into upper shell from filler opening, flow to the spool head through oil duct, upper spring seat, spring, and is divided into two-part tributary.A part flows into the lower shell body oil duct through the guiding gutter of valve core head outer ring; The lower spring cup of another part in valve core head flows into valve core rod, and enters the lower shell body oil duct from valve core rod seam and circumferential orifice flow.Finally, fuel oil collects in steel ball and tapered ball valve body seat junction.When valve core moves upward under electromagnetic attracting force, Compress Spring is also opened oil outlet, and fuel oil sprays under the oil pressure that oil pump provides.After electromagnetic force disappeared, valve core moved downward under the effect of spring restoring force, and closes nozzle opening, and injection process finishes.
In the utility model, layout of spring installs circular gasket additional between spring and the upper and lower spring seat between valve core head spring seat and upper shell spring seat, on the one hand in order to the Regulation spring pretightening force, changes dynamic response characteristic; On the other hand, upper shell and valve core head are soft magnetic material, and its hardness is far below the spring material spring steel, and pad can prevent that the dynamic response characteristic index that the spring seat wearing and tearing cause from reducing.This structure has been cancelled the mode of the adjusting sleeve of installing with interference in the nozzle in the past and has been adjusted initial tension of spring, has reduced number of spare parts, has reduced assembling difficulty.
Electromagnetism fuel nozzle of the present utility model is used for the two-stroke piston type Micro-Aviation Engine, has cancelled adjusting sleeve in the nozzle arrangements, uses pad instead and adjusts initial tension of spring, increases pad quantity and increases initial tension of spring, reduces pad quantity and reduces initial tension of spring; Valve core is processed, is assembled by valve core head, valve core rod, steel ball combination, rather than whole machine shaping, so that processing is more flexible, cost is lower; Valve core rod is rolled by steel plate and forms, and jointing leaves the slit, is pressed into valve core head, and the elasticity that produces when rolling by steel plate forms the secure fit power with valve core head.Nozzle arrangements is simple, and sealing is reliable, and dynamic response frequency is high, low cost of manufacture; Spray orifice adopts the form in single spraying hole, and directly processing is improving fuel economy in the lower shell body bottom surface, in the time of the reduction engine emission so that the aircraft flying power be improved.
Advantage of the present utility model: the large I of initial tension of spring realizes that by adjusting pad quantity having replaced in the past with this, nozzle adopts interference that the structure of adjusting sleeve, simple installation, cost are installed.Under the prerequisite that satisfies fuel-oil atmozation quality, inflammable mixture oil-gas ratio, oil outlet adopts the single hole structure, and oil is directly sprayed into intake duct, forms inflammable mixture in organizing the process of air inlet, compares multiport nozzle, and is simple in structure, and processing cost reduces.Whole valve core adopts the form of minute three part single-piece work, combination assembling, and the difficulty of having avoided whole repeatedly processing to bring has reduced processing cost.
The electromagnetism fuel nozzle that the utility model provides has advantage simple in structure, that cost is low, easy for installation.
Description of drawings
The axles such as Fig. 1 electromagnetism fuel nozzle are surveyed view;
Fig. 2 electromagnetism fuel nozzle longitudinal section;
Fig. 3 valve core structural drawing;
Fig. 4 valve core head plan view;
Fig. 5 valve core rod 3-D view.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
The utility model provides a kind of electromagnetism fuel nozzle, and as depicted in figs. 1 and 2, electromagnetism fuel nozzle described in the utility model comprises upper shell 1, lower shell body 2, coil rack 3, valve core 7(Fig. 2 or Fig. 3) and yoke 4; Described upper shell 1 comprises filler opening 101 and spring seat 9; Described lower shell body 2 comprises tapered ball valve body seat 6 and single hole nozzle opening 5; Described upper shell 1 and links together by circumferential weld at seam crossing 102 by positioning spigot 103 and lower shell body 2 transition fit together, and the location is ended 103 and played guiding and location.Described coil rack 3 is sleeved on outside upper shell 1 and the lower shell body 2, as the carrying housing of electromagnetic coil with the interference assembling; Described yoke 4 is divided into two-part, is welded in upper shell 1, lower shell body 2 outer surfaces with the mode point of symmetry, wraps coiler part integral body.
As shown in Figure 3, described valve core 7 is comprised of valve core head 701, valve core rod 702 and steel ball 703 from top to bottom; As shown in Figure 5, valve core rod 702 is rolled by certain thickness steel plate and forms, and slit 706 is left in the junction, circumferencial direction distribution circular hole 707, the uniformity of assurance fuel oil circumferential flow; 702 1 of valve core rods are pressed into the mounting hole of valve core head 701 bottoms with interference fit, and one welds together with steel ball 703, forms valve core 7.
As shown in Figure 4, described valve core head 701 tops are spring seat 10, and spring 8 is set between the upper shell spring seat 9, between upper and lower two place's spring seats and the spring pad 901 are set, and avoid wearing and tearing with Regulation spring pretightening force and protection spring seat; Have the guiding gutter 704 that connects valve core head around valve core head 701 outer rings, in order to fuel flow path and keep flow uniformity, as required, the guiding gutter number that can offer is 4,6,8 ... N, wherein N is even number.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of the present utility model.
Claims (5)
1. an electromagnetism fuel nozzle is used for miniature two-stroke aeroengine, comprises upper shell, lower shell body, coil rack, valve core and yoke, it is characterized in that:
Described upper shell comprises filler opening and spring seat;
Described lower shell body comprises tapered ball valve body seat and single hole nozzle opening;
Described upper shell and links together by circumferential weld at seam crossing by positioning spigot and lower shell body transition fit together;
Described coil rack is sleeved on outside upper shell and the lower shell body in the mode of interference assembling, as the carrying housing of electromagnetic coil;
Described yoke is divided into two-part, is welded in upper shell, lower shell body outer surface with the mode point of symmetry;
Described valve core is comprised of valve core head, valve core rod and steel ball from top to bottom, and one of valve core rod is pressed into valve core head, and one welds together with steel ball; Valve core head top is spring seat, between this spring seat and the upper shell spring seat spring is set, and between upper and lower two place's spring seats and the spring pad is set.
2. electromagnetism fuel nozzle according to claim 1, it is characterized in that: described tapered ball valve body seat cooperates with the steel ball sphere of valve core head, and described single hole nozzle opening processing is in lower shell body bottom center.
3. electromagnetism fuel nozzle according to claim 1, it is characterized in that: described valve core rod is rolled by certain thickness steel plate and forms, and the slit is left in the junction, circumferencial direction distribution circular hole.
4. according to claim 1,2 or 3 described electromagnetism fuel nozzles, it is characterized in that: described valve core head is a cirque structure, annulus top is spring seat, the bottom is the valve core rod mounting hole, one of valve core rod is pressed into this mounting hole with interference fit, has the guiding gutter that connects valve core head around the valve core head outer ring.
5. electromagnetism fuel nozzle according to claim 4, it is characterized in that: described guiding gutter number is 4,6,8 ... N, wherein N is even number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287720 CN202673524U (en) | 2012-06-12 | 2012-06-12 | Electromagnetic fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287720 CN202673524U (en) | 2012-06-12 | 2012-06-12 | Electromagnetic fuel nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673524U true CN202673524U (en) | 2013-01-16 |
Family
ID=47494433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220287720 Expired - Fee Related CN202673524U (en) | 2012-06-12 | 2012-06-12 | Electromagnetic fuel nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331536A (en) * | 2013-06-26 | 2013-10-02 | 无锡明珠钢球有限公司 | Steel ball seat structure with welding stand |
| CN104018966A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Pressure accumulation flow-limiting type electromagnetic control oil sprayer |
| CN105745432A (en) * | 2013-11-18 | 2016-07-06 | 三菱电机株式会社 | Fuel injection valve and method for manufacturing fuel injection valve |
-
2012
- 2012-06-12 CN CN 201220287720 patent/CN202673524U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331536A (en) * | 2013-06-26 | 2013-10-02 | 无锡明珠钢球有限公司 | Steel ball seat structure with welding stand |
| CN103331536B (en) * | 2013-06-26 | 2015-12-23 | 无锡明珠钢球有限公司 | A kind of steel ball seat structure with weld holder |
| CN105745432A (en) * | 2013-11-18 | 2016-07-06 | 三菱电机株式会社 | Fuel injection valve and method for manufacturing fuel injection valve |
| CN104018966A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Pressure accumulation flow-limiting type electromagnetic control oil sprayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20200612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |