Air-cooled four-stroke gasoline engine box body

Abstract

The utility model discloses an air-cooled four-stroke gasoline engine box body which comprises a four-stroke gasoline engine body, cooling fins are integrally formed on the four-stroke gasoline engine body, a base is integrally formed at the bottom of the four-stroke gasoline engine body, and a refrigeration box is arranged on the left side of the top of the base. The refrigeration box comprises a box body, water capable of being refrigerated through refrigeration pieces is arranged in the box body, an air inlet pipe and an air outlet pipe are embedded in the left side and the right side of the box body respectively, a pipe body is connected between the air inlet pipe and the air outlet pipe, a fan is installed at the right end of the air outlet pipe, and external air can be sucked into the pipe body through the fan. The cooling water in the box body can refrigerate the air in the pipe body, so that the airflow blown out by the fan becomes cold air, the cooling fins can be quickly cooled, and the cooling effect is improved.

Description

Technical Field

[0001] This patent relates to the technical field of four-stroke gasoline engine cases, specifically an air-cooled four-stroke gasoline engine case. Background Art

[0002] With the advancement of urbanization and the widespread use of agricultural machinery automation, the demand for small gasoline engines is gradually increasing. By 2020, the production of small gasoline engines will exceed 50 million units, among which high-power small four-stroke gasoline engines are widely recognized for their excellent performance and low emissions of gases such as nitrogen oxides and carbon monoxide, and the use of high-power small four-stroke gasoline engine cases has also increased relatively. The casting of gasoline engine cases is difficult due to its complex structure. Therefore, the cases on the market currently have common technical difficulties in heat dissipation, gasoline recycling and production and processing. In response to the above problems, this project studies the production and processing, heat dissipation, and comprehensive resource utilization of high-power small four-stroke cases, aiming to improve the performance and environmental protection performance of existing cases, improve production efficiency, and promote industrialization, so as to promote the overall technical improvement of the small gasoline engine case industry.

[0003] The existing four-stroke gasoline engine case is provided with a heat sink for dissipating the heat generated in the internal cylinder to the outside. In order to increase the flow heat dissipation effect of the heat sink, a fan is arranged on one side of the heat sink to quickly remove the heat from the heat sink through the airflow. However, the airflow attracted by the fan from the outside air may be hot air, which is not convenient for removing the heat from the heat sink, resulting in poor heat dissipation effect. For this reason, we propose an air-cooled four-stroke gasoline engine case. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this patent is to provide an air-cooled four-stroke gasoline engine case. This patent installs a refrigeration box on the top left side of the base. The refrigeration box includes a case. The interior of the case is provided with water that can be cooled by refrigeration fins. Inlet pipes and outlet pipes are respectively embedded on the left and right sides of the case. A pipe body is connected between the inlet pipe and the outlet pipe. A fan is installed on the right end of the outlet pipe. External air can be sucked into the pipe body through the fan. The cooling water in the case can cool the air in the pipe body, so that the airflow blown out by the fan becomes cold air, which is convenient for rapid heat dissipation of the heat sink and improves the heat dissipation effect.

[0005] The technical solution adopted by this patent to solve its technical problem is: an air-cooled four-stroke gasoline engine case, comprising a four-stroke gasoline engine body, a heat sink is integrally formed on the four-stroke gasoline engine body, a base is integrally formed at the bottom of the four-stroke gasoline engine body, and a refrigeration box is provided on the left side of the top of the base;

[0006] The refrigeration box comprises a box body, a fan and a vertical plate, the box body is fixedly mounted on the top left side of the base, cooling water is arranged inside the box body, a mounting hole is arranged at the bottom of the box body, a refrigeration plate is fixedly mounted in the mounting hole, the top cold surface of the refrigeration plate is located in the box body, a tube body is arranged inside the box body, an air inlet pipe is embedded in the left side wall of the box body, the air inlet pipe is located at one end of the box body and connected to one end of the tube body, an air outlet pipe is embedded in the right side wall of the box body, the air outlet pipe is located at one end of the box body and connected to the other end of the tube body, and the right end of the air outlet pipe is fixedly mounted on the input end of the fan;

[0007] The bottom end of the vertical plate is fixedly mounted on the top of the base, the vertical plate is located on the left side of the heat sink, a groove body is provided on the right side surface of the vertical plate, a rectangular frame is fixedly mounted on the output end of the fan, a shunt pipe is embedded in the right side wall of the rectangular frame, and the right end of the shunt pipe is embedded in the left side wall of the groove body.

[0008] Furthermore, support blocks are integrally formed at the four corners of the bottom of the box.

[0009] Furthermore, the tube body is a pure copper tube.

[0010] Furthermore, a copper plate is integrally formed on the outer side wall of the tube body.

[0011] Furthermore, a connecting cavity is provided in the copper plate, and a connecting hole is provided on the side wall of the tube body, and the connecting hole is communicated with the connecting cavity.

[0012] Furthermore, L-shaped plates are integrally formed on both the front and rear sides of the exterior of the box body, and mounting holes are provided on the L-shaped plates.

[0013] The beneficial effects of this patent are:

[0014] 1. This patent installs a refrigeration box on the top left side of the base. The refrigeration box includes a box body. The inside of the box body is provided with water that can be cooled by refrigeration fins. Inlet pipes and outlet pipes are respectively embedded on the left and right sides of the box body. A tube body is connected between the inlet pipe and the outlet pipe. A fan is installed on the right end of the outlet pipe. External air can be sucked into the tube body through the fan. The cooling water in the box body can cool the air in the tube body, so that the airflow blown out by the fan becomes cold air, which is convenient for rapid heat dissipation of the heat sink and improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the patent structure.

[0016] Figure 2 It is a schematic diagram of the refrigeration box of this patent.

[0017] Figure 3 It is a cross-sectional view of the pipe body of this patent.

[0018] Explanation of the reference numerals: 1 four-stroke gasoline engine body, 2 heat sink, 3 base, 4 refrigeration box, 5 box body, 6 mounting hole, 7 refrigeration fin, 8 pipe body, 9 air inlet pipe, 10 air outlet pipe, 11 fan, 12 rectangular frame, 13 diverter pipe, 14 vertical plate, 15 tank body, 16 supporting block, 17 copper plate, 18 connecting cavity, 19 connecting hole, 20 L-shaped plate, 21 mounting hole. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0020] See also Figure 1 , Figure 2 and Figure 3 This is a schematic diagram of the structure of the patent, an air-cooled four-stroke gasoline engine housing, including a four-stroke gasoline engine body 1, a heat sink 2 is integrally formed on the four-stroke gasoline engine body 1, a base 3 is integrally formed at the bottom of the four-stroke gasoline engine body 1, and a refrigeration box 4 is provided on the left side of the top of the base 3;

[0021] There is a piston inside the cylinder of a four-stroke gasoline engine, and the piston is connected to the crankshaft below through a connecting rod. When the engine is working, the intake valve at the top of the cylinder will open, and the mixture of gasoline and air will push the piston downward. Then the intake valve will close, and the piston will move upward and compress the oil-gas mixture. This is when the spark plug at the top will ignite and ignite the mixture. The burning gas will expand rapidly and push the piston downward. Then the exhaust valve will open, and the piston will move upward to discharge the exhaust gas after combustion. A complete four-stroke cycle is completed, and the crankshaft can rotate continuously by doing work in a reciprocating cycle.

[0022] The refrigeration box 4 includes a box body 5, a fan 11 and a vertical plate 14. The box body 5 is fixedly installed on the top left side of the base 3. Cooling water is provided inside the box body 5. A mounting hole 6 is provided at the bottom of the box body 5. A refrigeration plate 7 is fixedly installed in the mounting hole 6. The top cold surface of the refrigeration plate 7 is located in the box body 5. A tube body 8 is provided inside the box body 5. An air inlet pipe 9 is embedded in the left side wall of the box body 5. The air inlet pipe 9 is located at one end of the box body 5 and connected to one end of the tube body 8. An air outlet pipe 10 is embedded in the right side wall of the box body 5. The air outlet pipe 10 is located at one end of the box body 5 and connected to the other end of the tube body 8. The right end of the air outlet pipe 10 is fixedly installed on the input end of the fan 11.

[0023] The cold surface on the top of the refrigeration fin 7 can cool the cooling water in the box body 5 .

[0024] The bottom end of the vertical plate 14 is fixedly mounted on the top of the base 3, the vertical plate 14 is located on the left side of the heat sink 2, a groove body 15 is provided on the right side surface of the vertical plate 14, a rectangular frame 12 is fixedly mounted on the output end of the fan 11, a shunt pipe 13 is embedded in the right side wall of the rectangular frame 12, and the right end of the shunt pipe 13 is embedded in the left side wall of the groove body 15.

[0025] Specifically, support blocks 16 are integrally formed at the four corners of the bottom of the box body 5 .

[0026] The bottom of the support block 16 can be supported on the top of the base 3, so that the bottom hot surface of the cooling plate 7 does not contact the base 3, which is convenient for heat dissipation on the hot surface.

[0027] Specifically, the tube body 8 is a pure copper tube.

[0028] Pure copper has an excellent thermal conductivity, which facilitates the heat exchange between the air in the tube body 8 and the external cooling water.

[0029] Specifically, a copper plate 17 is integrally formed on the outer wall of the tube body 8 .

[0030] The arrangement of the copper plate 17 can increase the contact area between the outer wall of the tube body 8 and the cooling water, thereby improving the heat conduction efficiency.

[0031] Specifically, a connecting cavity 18 is provided in the copper plate 17 , and a connecting hole 19 is provided on the side wall of the tube body 8 , and the connecting hole 19 is communicated with the connecting cavity 18 .

[0032] By providing the connecting hole 19 and the connecting cavity 18 , the air in the tube body 8 can also flow in the connecting cavity 18 , thereby increasing the heat exchange efficiency between the air and the cooling water.

[0033] Specifically, L-shaped plates 20 are integrally formed on both the front and rear sides of the exterior of the box body 5 , and mounting holes 21 are provided on the L-shaped plates 20 .

[0034] like Figure 1 As shown, the position of the mounting hole 21 may correspond to the position of the bolt hole on the base 3, so as to facilitate simultaneous fixing of the L-shaped plate 20 and the base 3 by bolts.

[0035] Working principle: The cold surface on the top of the refrigeration plate 7 cools the cooling water in the box body 5. The fan 11 draws external air through the air inlet pipe 9. The external air enters the tube body 8. The cooling water can cool the air in the tube body 8. The fan 11 blows the air out through the diversion pipe 13 to cool the heat sink 2 and dissipate heat at the same time.

[0036] It should be noted that the equipment structure and drawings of this patent mainly describe the principles of this patent. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that technical personnel in this field understand the principles of the above patent, they can clearly know the details of its power mechanism, power supply system and control system.

[0037] This patent installs a refrigeration box on the top left side of the base, the refrigeration box includes a box body, the interior of the box body is provided with water that can be cooled by refrigeration fins, the left and right sides of the box body are respectively embedded with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are connected with a tube body, a fan is installed at the right end of the air outlet pipe, external air can be sucked into the tube body through the fan, the cooling water in the box body can cool the air in the tube body, so that the airflow blown out by the fan becomes cold air, which is convenient for rapid heat dissipation of the heat sink and improves the heat dissipation effect.

[0038] In the description of this patent, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "fixed installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0039] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. An air-cooled four-stroke gasoline engine housing, characterized in that: It comprises a four-stroke gasoline engine body (1), a heat sink (2) is integrally formed on the four-stroke gasoline engine body (1), a base (3) is integrally formed at the bottom of the four-stroke gasoline engine body (1), and a refrigeration box (4) is provided on the left side of the top of the base (3); The refrigeration box (4) comprises a box body (5), a fan (11) and a vertical plate (14); the box body (5) is fixedly mounted on the top left side of the base (3); cooling water is provided inside the box body (5); a mounting hole (6) is provided at the bottom of the box body (5); a refrigeration plate (7) is fixedly mounted in the mounting hole (6); the top cold surface of the refrigeration plate (7) is located inside the box body (5); a tube body (8) is provided inside the box body (5); an air inlet pipe (9) is embedded in the left side wall of the box body (5); the air inlet pipe (9) is located at one end of the box body (5) and is connected to one end of the tube body (8); an air outlet pipe (10) is embedded in the right side wall of the box body (5); the air outlet pipe (10) is located at one end of the box body (5) and is connected to the other end of the tube body (8); the right end of the air outlet pipe (10) is fixedly mounted on the input end of the fan (11); The bottom end of the vertical plate (14) is fixedly mounted on the top of the base (3); the vertical plate (14) is located on the left side of the heat sink (2); a groove body (15) is provided on the right side surface of the vertical plate (14); a rectangular frame (12) is fixedly mounted on the output end of the fan (11); a shunt pipe (13) is embedded in the right side wall of the rectangular frame (12); and the right end of the shunt pipe (13) is embedded in the left side wall of the groove body (15).

2. The air-cooled four-stroke gasoline engine housing according to claim 1, characterized in that: Support blocks (16) are integrally formed at the four corners of the bottom of the box body (5).

3. The air-cooled four-stroke gasoline engine housing according to claim 1, characterized in that: The tube body (8) is a pure copper tube.

4. The air-cooled four-stroke gasoline engine housing according to claim 1, characterized in that: A copper plate (17) is integrally formed on the outer wall of the tube body (8).

5. The air-cooled four-stroke gasoline engine housing according to claim 4, characterized in that: A connecting cavity (18) is provided in the copper plate (17), and a connecting hole (19) is provided on the side wall of the tube body (8), wherein the connecting hole (19) is in communication with the connecting cavity (18).

6. The air-cooled four-stroke gasoline engine housing according to claim 1, characterized in that: L-shaped plates (20) are integrally formed on both the front and rear sides of the exterior of the box body (5), and mounting holes (21) are provided on the L-shaped plates (20).

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