Double-jet-pump structure and jet head

A jet pump and jet head technology, applied to engine components, liquid fuel feeders, machines/engines, etc., can solve the problems of increased parts cost, complex structure, filter area limitation, etc., and achieve compact structure and reduced lateral size Effect

Active Publication Date: 2017-02-15

UNITED AUTOMOTIVE ELECTRONICS SYST

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AI-Extracted Technical Summary

Problems solved by technology

This single dual-jet pump assembly not only has a complicated structure, which increases the cost of a part, but also takes up a large space in the oil storage tank, causing the structural layout of other parts (such as fine filters) to be very limited.

[0004] figure 1 Shown is the existing dual-jet pump oi...

Method used

The double jet pump structure of embodiment one, on the basis of fluid pipe assembly 3, increase second jet pump 2, the head 21 of the injection head of second jet pump 2 is sealed with fluid pipe assembly 3 second pipeline 33 Fixedly installed together, the head 21 of the injection head is a pressure-bearing area, which bears the system pressure of the oil circuit; the fuel enters from the head 21 and is sprayed out from the injection hole 25 on the body 22. The negative pressure area formed by fuel injection from the hole 25 is located in the oil suction pipe 35 . In the double jet pump s...

Abstract

The invention discloses a double-jet-pump structure. The double-jet-pump structure comprises a fluid pipe assembly, a first jet pump and a second jet pump, wherein the fluid pipe assembly comprises a first pipeline, a second pipeline and an oil sucking pipe; the first pipeline is connected to the first jet pump; the second pipeline is connected to the second jet pump; the second jet pump comprises a jet head, and the jet head is sequentially provided with a head part, a main body and a tail part in the axial direction; inner cavities of the head part and the main body are both tubular and communicate with each other; a jet hole communicating with the inner cavity of the main body is formed in the outer wall of the main body in a radial direction; and the head of the jet head is embedded in the second pipeline, the outer wall of the head is hermetically connected with the second pipeline, fuel oil is fed from the head and sprayed out from the jet hole in the main body, the oil inlet direction is perpendicular with the oil outlet direction, and a negative pressure zone formed by the fuel oil sprayed by the jet hole is located in the oil sucking pipe. The invention further discloses a jet head. The structure of the double-jet-pump structure is compact, and the double-jet-pump structure can be arranged in a limited oil storing barrel space.

Application Domain

Machines/enginesLiquid fuel feeders

Technology Topic

Aerospace engineeringFluid pipe

Image

Examples

Experimental program(8)

Example Embodiment

[0082] Example one

[0083] The dual jet pump structure is used to place the oil drum in the main oil tank; figure 2 , image 3 , Figure 4 , Figure 5 and Image 6 As shown, the dual jet pump structure includes a fluid pipe assembly 3, a first jet pump 1, and a second jet pump 2;

[0084] The fluid pipe assembly 3 includes a first pipe 32, a second pipe 33, and an oil suction pipe 35;

[0085] The first pipeline 32 is connected to the first jet pump 1;

[0086] The second pipeline 33 is connected to the second jet pump 2;

[0087] The second jet pump 2 includes a jet head, which is a head 21, a body 22, and a tail 23 in order along the axial direction;

[0088] The inner cavities of the head 21 and the body 22 are both tubular and connected;

[0089] The outer wall of the body 22 is radially provided with an injection hole 25 communicating with the inner cavity of the body 22;

[0090] The head 21 of the injection head is embedded in the second pipeline, and the outer wall of the head 21 is sealed and connected with the second pipeline 33. The fuel enters from the head 21 and is ejected from the injection hole 25 on the body 22. The direction of the oil is vertical, and the negative pressure zone formed by the fuel injection from the injection hole 25 is located in the oil suction pipe 35.

[0091] Preferably, the body 22 of the spray head is located in the oil suction pipe 35, the spray hole 25 on the body 22 faces the lower end of the oil suction pipe 35, and there is a gap between the two sides of the body 22 and the pipe wall of the oil suction pipe 35. .

[0092] Preferably, one side of the pipe wall of the oil suction pipe 35 is in sealed communication with the second pipe 33, and the oil suction pipe 35 is perpendicular to the axis of the second pipe 33.

[0093] Preferably, the dual jet pump structure is used to be placed in the oil drum, which is placed in the main oil tank;

[0094] The first jet pump 1 is used to suck the oil in the main oil tank into the oil drum;

[0095] The second jet pump 2 sucks the oil in the auxiliary oil tank into the oil drum through the oil suction pipe 35.

[0096] In the dual jet pump structure of the first embodiment, a second jet pump 2 is added to the fluid pipe assembly 3. The head 21 of the jet head of the second jet pump 2 and the second pipeline 33 of the fluid pipe assembly 3 are sealed and fixedly installed in At the same time, the head 21 of the injection head is the pressure-bearing area and bears the system pressure of the oil circuit; the fuel enters from the head 21 and is ejected from the injection hole 25 on the body 22. The fuel inlet direction is perpendicular to the fuel outlet direction, and the injection hole 25 sprays The negative pressure zone formed by the outlet fuel is located in the oil suction pipe 35. In the dual jet pump structure of the first embodiment, the oil outlet injection hole 25 on the body 22 of the jet head of the second jet pump 2 is longitudinal, perpendicular to the transverse oil inlet of the jet head head, and the transverse dimension of the jet head becomes larger. Therefore, the spray head body 22 can be placed in the suction pipe 35 tightly combined with the second pipeline 33. The structure is compact and can significantly reduce the lateral size of the dual-jet pump structure, so that the dual-jet pump structure can be arranged in a limited storage. Inside the tank space.

Example Embodiment

[0097] Example two

[0098] Based on the dual jet pump structure of the first embodiment, the fluid pipe assembly 3 further includes a third pipe 31 and a fourth pipe 34;

[0099] The third pipeline 31 is used to send oil to the outside of the oil tank;

[0100] The fourth pipeline 34 is used by the oil pump to supply oil to the fluid pipe assembly 3.

[0101] Preferably, the axes of the first pipeline 32, the third pipeline 33, the fourth pipeline 34 and the oil suction pipe 35 are longitudinal;

[0102] The axis of the second pipeline 33 is transverse.

[0103] Preferably, the first pipeline 32, the third pipeline 33, and the fourth pipeline 34 are on the same side of the second pipeline 33, and the oil suction pipe 35 is on the opposite side of the second pipeline 33.

[0104] Preferably, the first pipeline 32 faces downwards, and the third pipeline 33 and the fourth pipeline 34 face upwards.

[0105] In the double jet pump structure of the second embodiment, the jet head of the second jet pump 2 is arranged at one end of the fluid pipe assembly 3, and the oil pump delivers oil to the fluid pipe assembly 3. When the oil pump is working, the jet hole 25 on the jet head body 22 The sprayed fuel forms a negative pressure zone in the oil suction pipe 35, so that the oil in the auxiliary tank can be sucked into the oil barrel through the oil suction pipe 35.

Example Embodiment

[0106] Example three

[0107] Based on the dual jet pump structure of Example 1, such as image 3 , Figure 4 , Figure 5 As shown, the jet head of the second jet pump 2 further includes a filter 24;

[0108] The inner diameter of the nozzle head 21 is greater than the inner diameter of the body 22;

[0109] The filter 24 is cylindrical, and the filter 24 has one or more grooves 241 in the axial direction of the cylinder;

[0110] The filter 24 is installed and fixed in the spray head head 21.

[0111] Preferably, the inner cavity of the spray head head 21 is cylindrical;

[0112] The filter 24 is cylindrical.

[0113] Preferably, the cross section of each groove 241 in the axial direction of the cylinder of the filter 24 is smaller than the cross section of the injection hole 25 of the second jet pump 2.

[0114] Preferably, the cylindrical surface of the filter 24 and the inner wall of the spray head head 21 are installed and fixed together with interference fit.

[0115] In the dual jet pump structure of the third embodiment, a filter 24 is integrated in the jet head head 21 of the second jet pump 1, and the filter 24 integrated in the jet head head 21 enables the jet head to filter large impurities Blocking capacity. In order to demould the fluid tube assembly 3, the spray head needs to be manufactured separately. The filter 24 is first pressed into the spray head, and then the spray head is pressed into the fluid tube assembly 3.

[0116] In the double jet pump structure of the third embodiment, the suction pipe 35 at the upper end of the injector body 22 of the second jet pump 2 becomes the suction port, the suction pipe at the lower end of the injector body 22 becomes the diffusion zone, and the upper end of the suction pipe 35 passes through the long soft The pipe is connected to the auxiliary oil tank so as to suck the oil in the auxiliary oil tank into the oil drum. The oil separated from the fluid pipe assembly 3 first enters the body 22 of the fuel injection head through the groove 241 of the filter 24, and then sprays into the diffusion at the lower end of the oil suction pipe 35 through the injection hole 25 toward the lower end of the oil suction pipe 35 A negative pressure zone is formed in the oil suction pipe 35 around the injection hole 25. The negative pressure area will suck the oil from the auxiliary tank through the upper end of the oil suction pipe 35, and the sucked oil will enter the diffusion zone through both sides of the body 22 of the fuel injection head. .

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Description & Claims & Application Information

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Owner:JINAN DECA MASCH CO LTD

Classification and recommendation of technical efficacy words

Reduce horizontal size
compact structure

Double-jet-pump structure and jet head

A jet pump and jet head technology, applied to engine components, liquid fuel feeders, machines/engines, etc., can solve the problems of increased parts cost, complex structure, filter area limitation, etc., and achieve compact structure and reduced lateral size Effect

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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