Automobile oil pump with heat dissipation cooling structure

Abstract

The utility model discloses an automobile oil pump with a heat dissipation cooling structure, which comprises a main pump body, a motor is arranged in the main pump body, an oil pump inlet is arranged below the motor, a fuel oil storage tank structure wrapping the motor is arranged outside the motor, and the heat dissipation cooling structure is arranged in the fuel oil storage tank structure. An oil return switch mechanism used for closing or opening the multiple oil return through holes is arranged below the fuel oil storage groove structure, under the condition that fuel oil is low, the outer surface of the motor can still be soaked with the fuel oil, cooling and heat dissipation treatment is conducted on the motor in the working process, the service life of the oil pump motor is prolonged, and when the fuel oil is about to be used up, the oil return switch mechanism is not needed. At the moment, the oil level descends to the position of the control buoy, the control buoy descends along with the oil level, finally the cooled fuel oil is discharged out of the fuel oil storage tank structure, final use is completed, cooling of the oil pump motor is still kept when the fuel oil is low, and meanwhile the final cooled fuel oil is automatically discharged for use when the fuel oil is about to be used up.

Description

Technical Field

[0001] The utility model relates to an automotive fuel pump, in particular to an automotive fuel pump provided with a heat dissipation and cooling structure. Background Art

[0002] The automotive fuel pump is a very important component in an automobile. Its function is to pump fuel out of the fuel tank and deliver it to the engine through pipelines to provide fuel for the engine, thereby driving the automobile. It is usually driven by a turbine motor. The interior of the fuel pump is filled with fuel to dissipate heat from the motor and prevent the motor from overheating. When the fuel level is low, at this time, the oil level inside the fuel pump also decreases accordingly. In the case of low fuel volume, heat dissipation treatment cannot be carried out on the motor, resulting in a reduced lifespan.

[0003] Therefore, the existing automotive fuel pumps need to be further improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automotive fuel pump provided with a heat dissipation and cooling structure, which can still ensure that the motor is immersed in fuel for heat dissipation and cooling when the fuel level is low, thereby ensuring the lifespan of the motor.

[0005] In order to achieve the above purpose, the utility model adopts the following solutions:

[0006] An automotive fuel pump provided with a heat dissipation and cooling structure includes a main pump body. An electric motor is arranged inside the main pump body. A fuel pump inlet is arranged below the electric motor. An external fuel storage tank structure that wraps the electric motor is arranged outside the electric motor. A plurality of oil return through holes are arranged below the fuel storage tank structure; a return oil switch mechanism for closing or opening the plurality of oil return through holes is arranged below the fuel storage tank structure. A lifting slide rail is arranged on one side below the electric motor. A control float is arranged extending upward from the lifting slide rail. A linkage structure is arranged between the lifting slide rail and the return oil switch mechanism.

[0007] Further, the main pump body includes a main pump valve, and a liquid level sensor and a plurality of oil passage structures are arranged on the main pump valve.

[0008] Further, the fuel storage tank structure includes an annular outer plate arranged outside the electric motor. A lower sealing plate connected to the electric motor is arranged on the lower surface of the annular outer plate. A cooling oil storage tank for storing fuel is formed between the annular outer plate and the electric motor.

[0009] Further, the plurality of oil return through holes are arranged on the annular outer plate; the plurality of oil return through holes are evenly distributed circumferentially around the center of the annular outer plate.

[0010] Further, the oil return switch mechanism includes an annular groove provided in the middle of the annular outer plate. An adjusting ring is rotatably provided in the annular groove, and a plurality of connecting through holes capable of being respectively aligned with the plurality of oil return through holes are provided on the adjusting ring.

[0011] Further, the lifting slide rail includes a vertical guide groove, and a vertical slider is movably provided up and down in the vertical guide groove.

[0012] Further, the density of the control float is less than the density of the fuel oil.

[0013] Further, the linkage structure includes a driving cross shaft provided on the lower end surface of the vertical slider. A spiral groove is provided on the circumferential outer wall of the adjusting ring, and the driving cross shaft is movably installed in the spiral groove.

[0014] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0015] The present invention solves the deficiencies existing in the existing automotive fuel pumps. Through the structural arrangement of the present invention, the following advantages are achieved. When the fuel level is low, the outer surface of the motor can still be immersed in fuel, so as to cool and dissipate heat during the operation of the motor, improving the service life of the fuel pump motor. When the fuel is about to run out, at this time, the oil level drops to the position of the control float, and the control float follows the oil level and drops. Finally, the cooled fuel is discharged from the fuel storage tank structure to complete the final use, realizing the cooling of the fuel pump motor when the fuel is low, and at the same time automatically discharging the final cooled fuel when the fuel is about to run out, achieving dual purposes, and the structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present invention;

[0017] Figure 2 is a schematic diagram of the internal structure of the present invention I;

[0018] Figure 3 is a schematic diagram of the internal structure of the present invention II;

[0019] Figure 4 is a schematic diagram of the linkage structure of the present invention;

[0020] Figure 5 is a schematic diagram of the structure of the oil return switch mechanism of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5 , the present utility model provides an automotive fuel pump provided with a heat dissipation and cooling structure, including a main pump body 1. A motor 2 is arranged inside the main pump body 1. A fuel pump inlet is arranged below the motor 2. A fuel storage tank structure 3 that wraps the motor 2 is arranged outside the motor 2. A plurality of oil return through holes 4 are arranged below the fuel storage tank structure 3; A fuel return switch mechanism 5 for closing or opening the plurality of oil return through holes 4 is arranged below the fuel storage tank structure 3. A lifting slide rail 6 is arranged on one side below the motor 2. A control float 7 extends upward along the lifting slide rail 6. A linkage structure 8 is arranged between the lifting slide rail 6 and the fuel return switch mechanism 5;

[0023] Install the main pump body 1 in the fuel tank to deliver fuel to the engine;

[0024] The motor 2 serves as the main power of the main pump body 1 and is simultaneously immersed in fuel, and the fuel can dissipate heat and cool the started motor 2;

[0025] When the fuel level is relatively low, the fuel storage tank structure 3 pre-stores sufficient fuel to wrap the motor 2 and cool and dissipate heat from the motor 2;

[0026] When the fuel level is lower than the highest moving position of the control float 7, the control float 7 gradually descends following the fuel level;

[0027] When the fuel is about to run out, the control float 7 also reaches the lowest point. At this time, the control float 7 controls the linkage structure 8 during the descending process;

[0028] The linkage structure 8 drives the fuel return switch mechanism 5 to open, discharging the fuel used for cooling and completing the use of the last fuel;

[0029] The main pump body 1 of the present utility model includes a main pump valve 101, and a liquid level sensor 102 and a plurality of oil circuit structures 103 are arranged on the main pump valve 101.

[0030] The fuel storage tank structure 3 of the present utility model includes an annular outer plate 301 disposed outside the motor 2. A lower sealing plate 302 connected to the motor 2 is provided on the lower surface of the annular outer plate 301. A cooling oil storage tank 303 for storing fuel is formed between the annular outer plate 301 and the motor 2.

[0031] In the present utility model, a plurality of the oil return through holes 4 are provided on the annular outer plate 301; the plurality of the oil return through holes 4 are evenly distributed around the circumference of the center of the annular outer plate 301.

[0032] The oil return switch mechanism 5 of the present utility model includes an annular groove 501 provided in the middle of the annular outer plate 301. An adjusting ring 502 is rotatably provided in the annular groove 501. A plurality of connecting through holes 503 capable of being respectively aligned with the plurality of the oil return through holes 4 are provided on the adjusting ring 502.

[0033] The lifting slide rail 6 of the present utility model includes a vertical guide groove 601. A vertical slider 602 is movably provided up and down in the vertical guide groove 601.

[0034] The density of the control buoy 7 of the present utility model is less than the density of the fuel.

[0035] The linkage structure 8 of the present utility model includes a driving horizontal shaft 801 provided on the lower end surface of the vertical slider 602. A spiral groove 802 is provided on the circumferential outer wall of the adjusting ring 502. The driving horizontal shaft 801 is movably installed in the spiral groove 802;

[0036] When the fuel liquid level is higher than the maximum floating height of the control buoy 7, the control buoy 7 is immersed in the fuel. When the fuel liquid level is lower than the maximum floating height of the control buoy 7, the control buoy 7 rises and falls following the fuel liquid level;

[0037] When the control buoy 7 descends, it will drive the driving horizontal shaft 801 to descend. During the descent of the driving horizontal shaft 801, it will drive the spiral groove 802 to rotate, causing the adjusting ring 502 to rotate. After the adjusting ring 502 rotates, the plurality of connecting through holes 503 are aligned with the plurality of the oil return through holes 4, and the fuel in the cooling oil storage tank 303 is discharged to the oil pump inlet to complete the final use of the fuel.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automotive oil pump provided with a heat dissipation and cooling structure, comprising a main pump body (1), wherein a motor (2) is arranged inside the main pump body (1), and an oil pump inlet is arranged below the motor (2), and is characterized in that: Outside the motor (2), there is a fuel storage tank structure (3) that wraps the motor (2). Below the fuel storage tank structure (3), there are multiple oil return through-holes (4). Below the fuel storage tank structure (3), there is an oil return switch mechanism (5) for closing or opening the multiple oil return through-holes (4). On one side below the motor (2), there is a lifting slide rail (6). The lifting slide rail (6) extends upward to be provided with a control float (7). A linkage structure (8) is provided between the lifting slide rail (6) and the oil return switch mechanism (5).

2. The automotive oil pump with a heat dissipation and cooling structure according to claim 1, characterized in that: The main pump body (1) includes a main pump valve (101). A liquid level sensor (102) and multiple oil passage structures (103) are provided on the main pump valve (101).

3. The automotive oil pump with a heat dissipation and cooling structure according to claim 2, characterized in that: The fuel storage tank structure (3) includes an annular outer plate (301) arranged outside the motor (2). A lower sealing plate (302) connected to the motor (2) is provided on the lower surface of the annular outer plate (301). A cooling oil storage tank (303) for storing fuel is formed between the annular outer plate (301) and the motor (2).

4. The automotive oil pump with a heat dissipation and cooling structure according to claim 3, wherein: The multiple oil return through-holes (4) are provided on the annular outer plate (301). The multiple oil return through-holes (4) are evenly distributed in a circumferential manner around the center of the annular outer plate (301).

5. The automotive oil pump with a heat dissipation and cooling structure according to claim 4, characterized in that: The oil return switch mechanism (5) includes an annular groove (501) arranged in the middle of the annular outer plate (301). An adjusting ring (502) is rotatably arranged in the annular groove (501). Multiple connection through-holes (503) capable of aligning with the multiple oil return through-holes (4) respectively are provided on the adjusting ring (502).

6. The automotive oil pump with a heat dissipation and cooling structure according to claim 5, characterized in that: The lifting slide rail (6) includes a vertical guide groove (601). A vertical slider (602) is movably arranged up and down in the vertical guide groove (601).

7. The automotive oil pump with a heat dissipation and cooling structure according to claim 6, characterized in that: The density of the control float (7) is less than the density of the fuel.

8. The automotive oil pump with a heat dissipation and cooling structure according to claim 7, characterized in that: The linkage structure (8) includes a driving cross shaft (801) arranged on the lower end face of the vertical slider (602). A spiral groove (802) is provided on the circumferential outer wall of the adjusting ring (502). The driving cross shaft (801) is movably installed in the spiral groove (802).

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