Gasoline engine cooling structure

Abstract

This utility model discloses a gasoline engine cooling structure, including a first housing with an impeller fan mounted on it. The first housing has an internal cavity containing a radiator, and a second housing surrounds the radiator. The inner wall of the first housing and the impeller fan form a first airflow channel to cool the radiator. A second airflow channel is formed between the radiator and the second housing, and the second and first airflow channels merge to form a third airflow channel to cool the cylinder head. This utility model effectively solves the noise problem associated with external radiators. Simultaneously, the radiator is located inside the first housing, increasing the cooling airflow and improving its cooling efficiency. It also reduces cooling air waste. Furthermore, the airflow is gathered through the first, second, and third airflow channels to cool the engine cylinder head, improving the utilization efficiency of the cooling air.

Description

Technical Field

[0001] This utility model belongs to the field of gasoline engine technology, specifically relating to a gasoline engine cooling structure. Background Technology

[0002] In existing technologies, the mainstream configuration for radiators used in twin-cylinder engines is typically external, where the radiator body is fixedly mounted to the outside of the air shroud. Cooling airflow exchanges heat with the radiator fins to achieve cooling. However, with these externally mounted radiators, the cooling air is directly discharged into the atmosphere after passing over the radiator surface without further guidance. This design has two significant drawbacks: first, a large amount of cooling airflow is discharged without effective utilization, resulting in unnecessary loss of cooling energy and reducing the overall cooling efficiency of the system; second, the direct discharge of high-speed airflow generates significant aerodynamic noise, which is difficult to meet the stringent acoustic requirements of end-use applications with strict noise control requirements (such as precision equipment environments, low-noise work areas, or high-end passenger vehicles). Utility Model Content

[0003] To address the aforementioned shortcomings of existing technologies, a gasoline engine cooling structure is provided, which solves the problems of wasted cooling airflow and excessive noise when using an external radiator in existing engines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A gasoline engine cooling structure includes a first housing with an impeller fan mounted on it. The first housing has a receiving cavity, and a radiator is fixedly installed inside the receiving cavity. A second housing is provided outside the radiator. The inner wall of the first housing and the impeller fan form a first air duct to cool the radiator. A second air duct is formed between the radiator and the second housing. The second air duct and the first air duct merge to form a third air duct to cool the cylinder head.

[0006] By adopting the above structural design, the noise problem of external radiators can be effectively solved by embedding the radiator inside the housing cavity. At the same time, the radiator is located inside the first housing, which increases the cooling air volume, improves the cooling efficiency of the radiator, and reduces the waste of cooling air. The air volume is gathered through the first air duct, the second air duct, and the third air duct formed by the convergence of the two to cool the engine cylinder head, thereby improving the utilization efficiency of the cooling air.

[0007] Preferably, the first housing has a notch on its side and a stepped mounting platform on the notch. The radiator is fixedly mounted on the mounting platform, and the second housing is disposed outside the radiator and fixedly connected to the mounting platform.

[0008] Preferably, the radiator and the second housing are mounted on the first housing by bolts or screws.

[0009] Preferably, the side of the radiator is spaced a certain distance from the inner wall of the first housing so that cooling air can circulate and cool the area.

[0010] With the above structural design, the side of the radiator is spaced at a certain distance, which ensures that the cooling air introduced from the impeller fan blows around the surface of the radiator in the first channel, thereby improving the heat dissipation efficiency of the radiator.

[0011] Preferably, the upper end of the radiator is provided with an L-shaped mounting ear, the lower end of which is fixedly connected to the radiator, and the upper end is fixedly mounted on the mounting platform by bolts so that the lower end of the radiator is suspended in the receiving cavity.

[0012] The above structural design, with the lower end of the radiator suspended, can further improve its heat dissipation effect.

[0013] Preferably, the mounting platform includes an upper mounting platform and a recessed lower mounting platform, the mounting ears of the radiator are fixed on the lower mounting platform, and the upper end of the second housing is fixed on the upper mounting platform.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The radiator of this utility model is built into the receiving cavity, which can reduce the air outlet noise at the radiator location, and thus can be applied to terminal application scenarios with strict noise control requirements.

[0016] 2. The radiator of this utility model is built into the receiving cavity and is located in the first air duct position. In a closed environment, the cooling air volume increases, thereby improving the heat dissipation efficiency of the radiator.

[0017] 3. In this utility model, part of the cooling air from the first air duct cools the radiator, and then merges with the cooling air passing through the side. The air volume is then gathered in the third air duct to cool the engine cylinder head, thereby improving the utilization efficiency of the cooling air. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electrical structure of this utility model;

[0019] Figure 2 yes Figure 1 The exploded diagram in the middle;

[0020] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0021] Figure 4 This is a schematic diagram of the internal air duct of the cavity of this utility model.

[0022] In the picture:

[0023] First housing 1, notch 1a, mounting platform 1b, upper mounting platform 11b, lower mounting platform 12b, impeller fan 2, receiving cavity 3, radiator 4, mounting lug 4a, second housing 5, first air duct 6, second air duct 7, third air duct 8. Detailed Implementation

[0024] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Please refer to 1 to Figure 4A gasoline engine cooling structure includes a first housing 1, on which an impeller fan 2 is mounted to provide cooling air. The first housing 1 is mounted on the engine block and has a receiving cavity 3 inside, within which a radiator 4 is fixedly installed. The radiator 4 cools the engine oil; this technology is conventional in the field and will not be described in detail here. A second housing 5 is provided outside the radiator 4, and the second housing 5 is fixed to the first housing 1, forming an integral structure without affecting the overall appearance of the first housing 1. The inner wall of the first housing 1 and the impeller fan 2 form a first air duct 6 to cool the radiator 4. A second air duct 7 is formed between the radiator 4 and the second housing 5, and the second air duct 7 merges with the first air duct 6 to form a third air duct 8 to cool the cylinder head. Specifically, the radiator 4 is located in the first air duct 6. The cooling air in the first air duct 6 is introduced from the impeller fan 2. A portion of the cooling air passes through the radiator 4 and is cooled before entering the second air duct 7. At the same time, a portion of the cooling air in the first air duct 6 enters the second air duct 7 from the left gap of the radiator 4 and merges with the cooling air that cools the radiator 4 before entering the third air duct 8. A portion of the cooling air in the third air duct 8 enters from the right side of the radiator 4 in the first air duct 6. After merging at the third air duct 8, the cooling air can dissipate heat from components such as the cylinder head, improving the heat dissipation effect inside the cylinder head. At the same time, the cooling air that has passed through the radiator 4 is reused.

[0027] Please continue reading. Figure 2 The first housing 1 has a notch 1a on its side, and a stepped mounting platform 1b is provided on the notch 1a. The radiator 4 is fixedly mounted on the mounting platform 1b, and the second housing 5 is disposed outside the radiator 4 and fixedly connected to the mounting platform 1b. In this embodiment, the radiator 4 and the second housing 5 are mounted on the first housing 1 by bolts or screws.

[0028] Furthermore, the side of the radiator 4 is spaced a certain distance from the inner wall of the first housing 1 to allow cooling air to circulate and lower the temperature. Specifically, the upper end of the radiator 4 is provided with an L-shaped mounting ear 4a. The lower end of the mounting ear 4a is fixedly connected to the radiator 4, and the upper end is fixedly mounted on the mounting platform 1b by bolts, so that the lower end of the radiator 4 is suspended in the receiving cavity 3. The mounting platform 1b includes an upper mounting platform 11b and a recessed lower mounting platform 12b. The mounting ear 4a of the radiator 4 is fixed on the lower mounting platform 12b, and the upper end of the second housing 5 is fixed on the upper mounting platform 11b.

[0029] Working principle of this utility model:

[0030] The radiator 4 is designed to be built into the first housing 1. During operation, the cooling air generated by the impeller fan 2 is blown onto the surface of the radiator 4 through the first air duct 6 to cool the engine oil inside the radiator 4. Simultaneously, the cooling air passing through the radiator 4 is introduced into the second air duct 7, along with the cooling air entering from the left side of the radiator 4. Guided by the second air duct 7, the air then enters the third air duct 8 and merges with the cooling air entering from the right side of the radiator 4 through the first air duct 6, thus cooling the cylinder head. Therefore, the built-in design of the radiator 4 not only solves the noise problem associated with external designs but also improves the heat dissipation effect of the radiator 4 and the cooling effect on the cylinder head.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A gasoline engine cooling structure, characterized in that, The system includes a first housing (1), on which an impeller fan (2) is mounted. The first housing (1) has a receiving cavity (3) inside, and a radiator (4) is fixedly installed inside the receiving cavity (3). A second housing (5) is provided outside the radiator (4). The inner wall of the first housing (1) and the impeller fan (2) form a first air duct (6) to cool the radiator (4). A second air duct (7) is formed between the radiator (4) and the second housing (5). The second air duct (7) and the first air duct (6) merge to form a third air duct (8) to cool the cylinder head.

2. The gasoline engine cooling structure as described in claim 1, characterized in that, The first housing (1) has a notch (1a) on its side, and a stepped mounting platform (1b) is provided on the notch (1a). The radiator (4) is fixedly mounted on the mounting platform (1b), and the second housing (5) is disposed outside the radiator (4) and fixedly connected to the mounting platform (1b).

3. A gasoline engine cooling structure as described in claim 2, characterized in that, The radiator (4) and the second housing (5) are mounted on the first housing (1) by bolts or screws.

4. A gasoline engine cooling structure as described in claim 2, characterized in that, The side of the radiator (4) is spaced a certain distance from the inner wall of the first housing (1) so that cooling air can circulate and cool it down.

5. A gasoline engine cooling structure as described in claim 2, characterized in that, The upper end of the radiator (4) is provided with an L-shaped mounting ear (4a). The lower end of the mounting ear (4a) is fixedly connected to the radiator (4), and the upper end is fixedly mounted on the mounting platform (1b) by bolts so that the lower end of the radiator (4) is suspended in the receiving cavity (3).

6. A gasoline engine cooling structure as described in claim 5, characterized in that, The mounting platform (1b) includes an upper mounting platform (11b) and a recessed lower mounting platform (12b). The mounting ears (4a) of the radiator (4) are fixed on the lower mounting platform (12b), and the upper end of the second housing (5) is fixed on the upper mounting platform (11b).

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