Engine cooling structure and engine

Abstract

The utility model belongs to the technical field of internal combustion engines, and provides an engine cooling structure and an engine with the engine cooling structure, which comprise an impeller arranged on an engine body and used for improving the power of air, and a shell sleeved on the periphery of the engine body, the shell and the engine body jointly define a cooling air duct which is provided with an air inlet and an air outlet and used for centralizing cooling air, the impeller is arranged at the air inlet of the cooling air duct, and cold air is introduced into the cooling air duct through the impeller so as to centralize the cooling air to dissipate heat of the engine body. The engine cooling structure and the engine are simple in structure and reasonable in design, cooling air can be concentrated to dissipate heat of the engine body, and heat dissipation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engines, in particular to an engine cooling structure and an engine. Background Art

[0002] As a portable external power source, the engine is widely used in daily life. When the generator is running, the engine body will emit a lot of heat, which will increase the internal temperature of the body and affect the operation of the engine. Therefore, a cooling structure is usually set for the engine to cool the engine and ensure the working state of the engine. According to the different cooling methods, the engine can be divided into water-cooled engine and air-cooled engine.

[0003] The air-cooled engine in the prior art only uses an impeller to increase the power of the air and blows it toward the engine body, thereby achieving the purpose of cooling the engine body. The cooling air blown toward the engine body cannot be concentrated, resulting in poor heat dissipation effect. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an engine cooling structure and an engine to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, on the one hand, the utility model provides an engine cooling structure, including an impeller arranged on an engine body and used to increase the power of air, and also including a shell arranged on the periphery of the engine body, the shell and the engine body are jointly arranged to form a cooling air duct having an air inlet and an air outlet and used to concentrate cooling air, the impeller is arranged at the air inlet of the cooling air duct, and cold air is introduced into the cooling air duct through the impeller to concentrate cooling air to dissipate heat from the engine body.

[0006] Furthermore, the housing comprises:

[0007] An impeller cover, which is hollow and has openings at both ends, and is sleeved outside the impeller;

[0008] a first air pressure plate, which is arranged at the air outlet end of the impeller cover and located at the bottom of the engine body, and which is surrounded by the engine body to form a first cooling sub-air duct, through which cooling air is concentratedly guided to the bottom of the engine body to dissipate heat from the bottom of the engine body;

[0009] a second air pressure plate, which is arranged at the air outlet end of the impeller cover and located at the first side of the cylinder head of the engine, and which is surrounded by the engine body to form a second cooling sub-air duct, and the cooling air is concentratedly guided to the first side of the cylinder head through the second cooling sub-air duct to cool the first side of the cylinder head;

[0010] A third air pressure plate is arranged at the air outlet end of the impeller cover and is located on the second side of the cylinder head of the engine. The third air pressure plate and the engine body are surrounded by a third cooling sub-air duct, and the cooling air is concentratedly guided to the second side of the cylinder head through the third cooling sub-air duct to cool the first side of the cylinder head.

[0011] Furthermore, the engine is a V-type engine.

[0012] Furthermore, the second air pressure plate comprises:

[0013] a second air pressure plate A, which is arranged at the air outlet end of the impeller cover and located on the first side of the left cylinder head of the engine, and which is surrounded by the engine body to form a second cooling sub-air duct A, through which the cooling air is concentratedly guided to the first side of the left cylinder head to cool the first side of the left cylinder head; and

[0014] a second air pressure plate B, which is arranged at the air outlet end of the impeller cover and located on the first side of the right cylinder head of the engine, and which is surrounded by the engine body to form a second cooling sub-air duct B, through which the cooling air is concentratedly guided to the first side of the right cylinder head to cool the second side of the right cylinder head;

[0015] The third air pressure plate comprises:

[0016] a third air pressure plate A, which is arranged at the air outlet end of the impeller cover and located on the second side of the left cylinder head of the engine, and which is surrounded by the engine body to form a third cooling sub-air duct A, through which the cooling air is concentratedly guided to the second side of the left cylinder head to cool the second side of the left cylinder head; and

[0017] A third air pressure plate B is arranged at the air outlet end of the impeller cover and is located on the second side of the right cylinder head of the engine. It and the engine body are surrounded by a third cooling sub-air duct B. The cooling air is concentratedly guided to the second side of the right cylinder head through the third cooling sub-air duct B to cool the second side of the right cylinder head.

[0018] Furthermore, a partition is provided on the inner side of the impeller cover, and the inner space of the impeller cover is separated by the partition, so that the wind entering the cooling air duct is more concentrated, and at the same time, the amount of cooling air flowing to the lower temperature part of the engine body is reduced.

[0019] On the other hand, the utility model also provides an engine, comprising any one of the engine cooling structures described above.

[0020] Beneficial effects of the utility model:

[0021] The engine cooling structure and engine provided by the utility model are provided with a shell outside the engine body, and the shell and the engine body are surrounded by a cooling air duct for concentrating cooling air, so that the cooling air introduced through the impeller is concentrated in the cooling air duct and will not be dispersed, thereby achieving the purpose of improving the cooling effect on the engine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 A three-dimensional view of an engine provided by an embodiment of the utility model in a first direction;

[0024] Figure 2 for Figure 1 a perspective view of the engine shown in a second orientation;

[0025] Figure 3 for Figure 1 A perspective view of the engine shown in a third orientation;

[0026] Figure 4 for Figure 1 a perspective view of the engine shown in a fourth direction;

[0027] Figure 5 for Figure 1 a perspective view of the engine shown in a fifth direction;

[0028] Figure 6 for Figure 1 A perspective view of an impeller cover of an engine cooling structure of an engine is shown.

[0029] Reference numerals:

[0030] 100, engine body; 210, impeller cover; 211, partition; 220, first air pressure plate; 230, second air pressure plate A; 240, third air pressure plate A; 250, second air pressure plate B; 260, third air pressure plate B; 270, air inlet cover. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] like Figure 1-6As shown, the utility model provides an engine cooling structure, which is used to cool and dissipate heat for the engine, and includes an impeller arranged on the engine body 100 and used to increase the power of air. When in use, the impeller accelerates the external air and blows it toward the engine body 100, thereby taking away the heat of the engine body 100, and further dissipating the heat of the engine body 100.

[0038] The engine body 100 is provided with a shell, and the shell and the engine body 100 are together arranged to form a cooling air duct with an air inlet and an air outlet for concentrated cooling air. The impeller is arranged at the air inlet of the cooling air duct, and the cold air is introduced into the cooling air duct through the impeller to concentrate the cooling air to dissipate the heat of the engine body 100, thereby achieving the purpose of improving the cooling effect.

[0039] Because the temperature of some positions of the engine body 100 is relatively high, such as the cylinder head, the oil pan at the bottom of the engine, etc. Therefore, the cooling air should be concentrated to the position of the engine body 100 with relatively high temperature, so as to achieve the purpose of improving the centralized cooling and the cooling effect. Therefore, in one embodiment, the housing includes an impeller cover 210 and a first air pressure plate 220, a second air pressure plate, and a third air pressure plate arranged at the air outlet end of the impeller cover 210.

[0040] The impeller cover 210 is hollow and has openings at both ends, and the impeller cover 210 is sleeved outside the impeller. The first air pressure plate 220 is arranged at the air outlet end of the impeller cover 210 and is located at the bottom of the engine body 100. The first air pressure plate 220 and the engine body 100 are surrounded to form a first cooling sub-air duct. The cooling air is concentrated and guided to the bottom of the engine body 100 through the first cooling sub-air duct to dissipate the heat at the bottom of the engine body 100, thereby achieving the purpose of improving the heat dissipation effect at the bottom of the engine body 100.

[0041] The second air pressure plate is arranged at the air outlet end of the impeller cover 210 and is located at the first side of the cylinder head of the engine. The second air pressure plate and the engine body 100 are surrounded to form a second cooling sub-air duct. The cooling air is concentratedly guided to the first side of the cylinder head through the second cooling sub-air duct to cool the first side of the cylinder head, thereby achieving the purpose of improving the cooling effect on the first side of the cylinder head.

[0042] The third air pressure plate is arranged at the air outlet end of the impeller cover 210 and is located at the second side of the cylinder head of the engine. The third air pressure plate and the engine body 100 are surrounded to form a third cooling sub-air duct. The cooling air is concentratedly guided to the second side of the cylinder head through the third cooling sub-air duct to cool the first side of the cylinder head, thereby achieving the purpose of improving the cooling effect on the second side of the cylinder head.

[0043] Of course, the air inlet section of the impeller cover 210 is provided with an air inlet cover 270 having a plurality of air inlet holes.

[0044] Specifically, when in use, the impeller guides the external cooling air into the impeller cover 210. The cooling air entering the impeller cover 210 is divided into three streams, which are respectively guided to the bottom of the engine body 100, the first side of the cylinder head and the second side of the cylinder head through the first cooling sub-air duct, the second cooling sub-air duct and the third cooling sub-air duct, so as to cool and dissipate heat at the corresponding positions, thereby achieving the purpose of improving the cooling effect.

[0045] By setting the first air pressure plate 220, the second air pressure plate and the third air pressure plate, the cooling air is guided to the position of the engine body 100 with higher temperature, so as to concentrate the cooling and heat dissipation on the higher temperature parts of the engine body, thereby achieving the purpose of improving the cooling effect on the corresponding position of the engine.

[0046] In this embodiment, the engine is a V-type engine.

[0047] Specifically, the second air compression plate includes a second air compression plate A230 and a second air compression plate B250. The third air compression plate includes a third air compression plate A240 and a third air compression plate B260.

[0048] The second air pressure plate A230 is arranged at the air outlet end of the impeller cover 210 and is located at the first side of the left cylinder head of the engine. The second air pressure plate A230 and the engine body 100 are surrounded to form a second cooling sub-air duct A. The cooling air is concentratedly guided to the first side of the left cylinder head through the second cooling sub-air duct A to cool the first side of the left cylinder head, thereby achieving the purpose of improving the cooling effect on the first side of the left cylinder head.

[0049] The third air pressure plate A240 is disposed at the air outlet end of the impeller cover 210 and is located on the second side of the left cylinder head of the engine. The third air pressure plate A240 and the engine body 100 are surrounded to form a third cooling sub-air duct A. The cooling air is concentratedly guided to the second side of the left cylinder head through the third cooling sub-air duct A to cool the second side of the left cylinder head, thereby achieving the purpose of improving the cooling effect on the second side of the left cylinder head.

[0050] The second air pressure plate B250 is arranged at the air outlet end of the impeller cover 210 and is located at the first side of the right cylinder head of the engine. The second air pressure plate B250 and the engine body 100 are surrounded to form a second cooling sub-air duct. The cooling air is concentratedly guided to the first side of the right cylinder head through the second cooling sub-air duct B to cool the second side of the right cylinder head, thereby achieving the purpose of improving the cooling effect on the first side of the right cylinder head.

[0051] The third air pressure plate B260 is arranged at the air outlet end of the impeller cover 210 and is located at the second side of the right cylinder head of the engine. The third air pressure plate B260 and the engine body 100 are surrounded to form a third cooling sub-air duct B. The cooling air is concentratedly guided to the second side of the right cylinder head through the third cooling sub-air duct B to cool the second side of the right cylinder head, thereby achieving the purpose of improving the cooling effect on the lower side of the right cylinder head.

[0052] In this embodiment, for a V-type engine, a first air pressure plate 220, a second air pressure plate A230, a third air pressure plate A240, a second air pressure plate B250 and a third air pressure plate B260 are provided to guide cooling air to positions of the engine body 100 where the temperature is higher, so as to concentrate cooling and dissipate heat at places of the engine body where the temperature is higher, thereby achieving the purpose of improving the cooling effect on the corresponding positions of the engine.

[0053] In one embodiment, a partition 211 is provided on the inner side of the impeller cover 210, and the inner space of the impeller cover 210 is separated by the partition 211, so that the wind entering the cooling air duct is more concentrated, and at the same time, the amount of cooling air flowing to the lower temperature part of the engine body 100 is reduced, thereby achieving the purpose of further improving the cooling effect on the engine.

[0054] like Figure 1-5 As shown, in one embodiment, the utility model further provides an engine, comprising the engine cooling structure described in any of the above embodiments.

[0055] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. An engine cooling structure for dissipating heat from an engine, comprising an impeller disposed on an engine body (100) and used to increase the power of air, characterized in that: It also includes a shell that is sleeved on the periphery of the engine body (100), the shell and the engine body (100) together enclose a cooling air duct having an air inlet and an air outlet and used to concentrate cooling air, the impeller is arranged at the air inlet of the cooling air duct, and cold air is introduced into the cooling air duct through the impeller, so as to concentrate cooling air to dissipate heat from the engine body (100).

2. The engine cooling structure according to claim 1, characterized in that: The housing comprises: An impeller cover (210) which is hollow and has openings at both ends and is sleeved outside the impeller; a first air pressure plate (220) arranged at the air outlet end of the impeller cover (210) and located at the bottom of the engine body (100), and forming a first cooling sub-air duct with the engine body (100), and guiding cooling air to the bottom of the engine body (100) through the first cooling sub-air duct to dissipate heat from the bottom of the engine body (100); a second air pressure plate, which is arranged at the air outlet end of the impeller cover (210) and is located on the first side of the cylinder head of the engine, and which is surrounded by the engine body (100) to form a second cooling sub-air duct, and through the second cooling sub-air duct, cooling air is concentratedly guided to the first side of the cylinder head to cool the first side of the cylinder head; A third air pressure plate is arranged at the air outlet end of the impeller cover (210) and is located on the second side of the cylinder head of the engine. The third air pressure plate and the engine body (100) are arranged to form a third cooling sub-air duct, and cooling air is concentratedly guided to the second side of the cylinder head through the third cooling sub-air duct to cool the first side of the cylinder head.

3. The engine cooling structure according to claim 2, characterized in that: The engine is a V-type engine.

4. The engine cooling structure according to claim 3, characterized in that: The second air pressure plate comprises: a second air pressure plate A (230), which is arranged at the air outlet end of the impeller cover (210) and located on the first side of the left cylinder head of the engine, and which is surrounded by the engine body (100) to form a second cooling sub-air duct A, and through the second cooling sub-air duct A, cooling air is concentratedly guided to the first side of the left cylinder head to cool the first side of the left cylinder head; and a second air pressure plate B (250), which is arranged at the air outlet end of the impeller cover (210) and located on the first side of the right cylinder head of the engine, and which is surrounded by the engine body (100) to form a second cooling sub-air duct B, through which cooling air is concentratedly guided to the first side of the right cylinder head to cool the second side of the right cylinder head; The third air pressure plate comprises: a third air pressure plate A (240), which is arranged at the air outlet end of the impeller cover (210) and is located on the second side of the left cylinder head of the engine, and which is surrounded by the engine body (100) to form a third cooling sub-air duct A, and cools the second side of the left cylinder head by guiding cooling air to the second side of the left cylinder head through the third cooling sub-air duct A; and A third air pressure plate B (260) is arranged at the air outlet end of the impeller cover (210) and is located on the second side of the right cylinder head of the engine. The third air pressure plate B and the engine body (100) are arranged to form a third cooling sub-air duct B. The cooling air is concentratedly guided to the second side of the right cylinder head through the third cooling sub-air duct B to cool the second side of the right cylinder head.

5. The engine cooling structure according to any one of claims 2 to 4, characterized in that: A partition (211) is provided on the inner side of the impeller cover (210), and the partition (211) is used to separate the inner space of the impeller cover (210), so that the wind entering the cooling air duct is more concentrated, and at the same time, the amount of cooling air flowing to the lower temperature portion of the engine body (100) is reduced.

6. An engine, characterized in that: The engine cooling structure comprises the engine cooling structure according to any one of claims 1 to 5.

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