CN210660403U - Oil duct structure of oil sprayer - Google Patents
Oil duct structure of oil sprayer Download PDFInfo
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- CN210660403U CN210660403U CN201921134903.3U CN201921134903U CN210660403U CN 210660403 U CN210660403 U CN 210660403U CN 201921134903 U CN201921134903 U CN 201921134903U CN 210660403 U CN210660403 U CN 210660403U
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- oil
- plunger
- sprayer
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- return pipeline
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Abstract
The utility model belongs to the sprayer field, especially, oil duct structure of sprayer, including the sprayer body, there is the nozzle body bottom side of sprayer body through the tight cap threaded connection of glib talker, this internal plunger chamber that is formed with of sprayer, plunger intracavity movable mounting has the plunger, the nozzle opening has been seted up to the bottom of nozzle body, the oil cup is installed to the bottom of plunger, and the corresponding setting of plunger and nozzle opening, this last inlet line and the oil return pipeline of being equipped with of sprayer, and inlet line and oil return pipeline all set up along vertical direction, the bottom of inlet line and oil return pipeline communicates respectively has first arc pipe and second arc pipe, and the one end that the inlet line was kept away from to first arc pipe is linked together with the nozzle opening. In the utility model, the oil duct is reasonable in design, and the energy loss of the fuel oil in the oil injector is small; the working procedure is simple, and the processing period is short; the cost of the oil sprayer is relatively low, and the structure of the oil passage can be optimized by means of the existing 3D printing technology.
Description
Technical Field
The utility model relates to a sprayer technical field especially relates to an oil duct structure of sprayer.
Background
An automobile fuel injector needs to inject high-pressure fuel into a fuel combustion chamber. The patent application No. 201820242960.2 discloses a fuel injector, including injector body and nozzle body, the internal plunger that holds the piston that has of injector, the internal needle valve chamber that holds the needle valve that has of nozzle, a bush set up in the plunger with between the needle valve chamber, the bush has the piston hole portion of accepting part piston and the needle valve hole portion of accepting part needle valve, the spring has in the plunger, spring one end support press in on the bush, its wherein piston hole portion with have between the needle valve hole portion keep apart the piston with the separator of needle valve. The application can ensure that the needle valve head of the fuel injector has less abrasion.
The existing internal oil passage of the oil injector is shown in fig. 2, the oil passage is formed by intersecting transverse and longitudinal holes, and the machining process has three defects: (1) vortex is easily formed at the bottom end positions of the oil inlet pipe 8 and the oil return pipe 9 in fig. 2, resulting in energy loss; (2) the oil inlet 12 and the oil return 13 in fig. 2 need to be blocked, so that the processing process is complex and the cost is high; (3) the transverse holes are machined on a curved surface, the central line of each transverse hole is difficult to be in the same plane with the central line of the longitudinal hole, and machining errors are easy to form.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the prior art is easy to cause energy loss, the processing procedure is complex, the cost is high, the defect of processing error is easy to form, and the oil duct structure of the oil sprayer is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an oil duct structure of sprayer, includes the sprayer body, there is the nozzle body bottom side of sprayer body through the tight cap threaded connection of glib, this internal plunger chamber that is formed with of sprayer, plunger intracavity movable mounting has the plunger, the nozzle opening has been seted up to the bottom of nozzle body, the oil cup is installed to the bottom of plunger, and the corresponding setting of plunger and nozzle opening, be equipped with inlet tube and oil return pipe on the sprayer body, and inlet tube and oil return pipe all set up along vertical direction, inlet tube and oil return pipe's bottom communicates respectively has first arc pipe and second arc pipe, and the one end that inlet tube was kept away from to first arc pipe is linked together with the nozzle opening, and the clearance between nozzle opening and the inlet tube forms the negative pressure chamber, and the second arc pipe is linked together with the negative pressure chamber.
Preferably, a spring is arranged in the fuel injector body and sleeved on the plunger cavity.
Preferably, the plunger and the oil cup are arranged coaxially.
In the oil duct structure of the oil sprayer, 1, the oil duct is reasonable in design, and the energy loss of fuel oil in the oil sprayer is small; 2. the working procedure is simple, and the processing period is short; the cost of the oil sprayer is relatively low, and the structure of the oil passage can be optimized by means of the existing 3D printing technology.
Drawings
Fig. 1 is a schematic structural diagram of an oil passage structure of an oil injector according to the present invention;
FIG. 2 is a partial cross-sectional view of a prior art fuel injector.
In the figure: the fuel injector comprises a fuel injector body 1, a nozzle body 2, a plunger 3, an oil cup 4, a fuel injection hole 5, a plunger cavity 6, a spring 7, an oil inlet pipeline 8, an oil return pipeline 9, a first arc-shaped pipe 10, a second arc-shaped pipe 11, an oil inlet hole 12 and an oil outlet hole 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, an oil channel structure of an oil injector comprises an oil injector body 1, wherein a nozzle body 2 is connected to the bottom side of the oil injector body 1 through a nozzle cap fastening thread, a plunger cavity 6 is formed in the oil injector body 1, a plunger 3 is movably installed in the plunger cavity 6, an oil injection hole 5 is formed in the bottom end of the nozzle body 2, an oil cup 4 is installed at the bottom end of the plunger 3, the plunger 3 and the oil injection hole 5 are correspondingly arranged, an oil inlet pipeline 8 and an oil return pipeline 9 are arranged on the oil injector body 1, the oil inlet pipeline 8 and the oil return pipeline 9 are both arranged along the vertical direction, the bottom ends of the oil inlet pipeline 8 and the oil return pipeline 9 are respectively communicated with a first arc-shaped pipe 10 and a second arc-shaped pipe 11, one end of the first arc-shaped pipe 10, far away from the oil inlet pipeline 8, is communicated with the oil injection hole 5, a, the structure that the oil channel is formed by crossing the transverse holes and the longitudinal holes in the oil way in the figure 2 is changed into the structure that the oil inlet pipeline 8 and the oil outlet pipeline 9 are respectively connected with the first arc-shaped pipe 10 and the second arc-shaped pipe 10, the bottom ends of the oil inlet pipeline 8 and the oil outlet pipeline 9 cannot generate vortex, the oil channel is reasonable in design, and the energy loss of fuel oil in the oil sprayer is small.
The utility model discloses in, this internal spring 7 that is provided with of sprayer, spring 7 cup joints on plunger chamber 6.
The utility model discloses in, plunger 3 sets up with 4 coaxial lines of oil cup.
The utility model discloses in, the theory of operation, the structure that oil way was through horizontal and fore-and-aft hole cross formation in figure 2 changes into inlet line 8 and goes out oil pipe 9 and connect first arc 10 and second arc 10 respectively, the vortex can not appear in inlet line 8 and the bottom that goes out oil pipe 9, oil duct reasonable in design, the energy loss of fuel in the sprayer is less, simultaneously, adopt current 3D to print the technique and optimize the oil duct structure, the process is simple, processing cycle is short, reduce the cost of sprayer.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (3)
1. An oil duct structure of an oil sprayer comprises an oil sprayer body (1) and is characterized in that a nozzle body (2) is connected to the bottom side of the oil sprayer body (1) through a nozzle cap tightening thread, a plunger cavity (6) is formed in the oil sprayer body (1), a plunger (3) is movably mounted in the plunger cavity (6), an oil injection hole (5) is formed in the bottom end of the nozzle body (2), an oil cup (4) is mounted at the bottom end of the plunger (3), the plunger (3) and the oil injection hole (5) are arranged correspondingly, an oil inlet pipeline (8) and an oil return pipeline (9) are arranged on the oil sprayer body (1), the oil inlet pipeline (8) and the oil return pipeline (9) are arranged in the vertical direction, the bottom ends of the oil inlet pipeline (8) and the oil return pipeline (9) are respectively communicated with a first arc-shaped pipe (10) and a second arc-shaped pipe (, and one end of the first arc-shaped pipe (10) far away from the oil inlet pipeline (8) is communicated with the oil spray hole (5), a negative pressure cavity is formed in a gap between the oil spray hole (5) and the oil inlet pipeline (8), and the second arc-shaped pipe (11) is communicated with the negative pressure cavity.
2. The oil passage structure of the oil injector according to claim 1, characterized in that a spring (7) is arranged in the oil injector body (1), and the spring (7) is sleeved on the plunger cavity (6).
3. The oil passage structure of a fuel injector according to claim 1, characterized in that the plunger (3) is provided coaxially with the oil cup (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134903.3U CN210660403U (en) | 2019-07-19 | 2019-07-19 | Oil duct structure of oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134903.3U CN210660403U (en) | 2019-07-19 | 2019-07-19 | Oil duct structure of oil sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660403U true CN210660403U (en) | 2020-06-02 |
Family
ID=70838311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921134903.3U Active CN210660403U (en) | 2019-07-19 | 2019-07-19 | Oil duct structure of oil sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660403U (en) |
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2019
- 2019-07-19 CN CN201921134903.3U patent/CN210660403U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ge Xiangang Inventor after: Wang Dechao Inventor before: Wang Dechao |
|
| CB03 | Change of inventor or designer information |