Efficient heat dissipation engine cylinder body for gardening tool

Abstract

The utility model discloses an efficient heat dissipation engine cylinder block for gardening tools, which comprises a T-shaped main shell, the main shell comprises a horizontal part and a vertical part, a cover cap with heat dissipation holes is arranged at one end of the horizontal part, a rotating fan blade and a fixed fan blade which are coaxial are arranged in the cover cap, and a plurality of heat dissipation fins are arranged on the vertical part. The cover cap extends towards the vertical part to form an air suction concave cavity, and the rotating fan blades are driven by a crankshaft in the air cylinder body to rotate. The air cylinder body is arranged to be of the T-shaped structure, the two sets of fan blades are arranged on the horizontal part to form a heat dissipation structure, after an engine is started, one set of fan blades rotate and are compressed at the position of the other set of fan blades to form suction air, and the air suction range is expanded to the position of the cooling fins of the vertical part through extension of the cover cap so that air circulation outside the main shell can be accelerated; therefore, heat dissipation is accelerated.

Description

Technical Field

[0001] The utility model relates to a cylinder body, in particular to an engine cylinder body with high-efficiency heat dissipation for garden tools. Background Art

[0002] The cylinder block is an important component of the engine. It is the skeleton of the engine, the installation basis of various mechanisms and systems of the engine, and bears various loads.

[0003] Since there are multiple heat-generating components inside it, if the temperature is too high, it will have a greater impact on the lubricating oil, which will cause the friction of the internal piston to increase, and finally affect the life of the equipment. Therefore, the heat dissipation of the cylinder block is particularly important. At present, most cylinder blocks adopt heat dissipation by adding heat sinks on the outside. For example, the patent with application number CN2020201838835 discloses a simple motorcycle cylinder block, including a cylinder body, the inner side of the cylinder body is provided with a cylinder barrel for piston movement, the upper part of the outer side of the cylinder body is provided with a mounting boss, and the lower part of the outer side of the cylinder body is evenly provided with heat sinks, the thickness of the heat sink is 1.2mm~2.0mm, and the distance between adjacent heat sinks is 1.5mm~3.5mm.

[0004] The above patent has improved the heat sink to improve the heat dissipation efficiency, but relying solely on heat conduction between the heat sink and the surrounding air to dissipate heat will still cause heat accumulation near the heat sink. After the engine has been started for a period of time, the local temperature is still very high. Utility Model Content

[0005] Based on the disadvantage that the prior art only relies on heat sinks for heat dissipation and the heat conduction efficiency between the heat near the heat sinks and the air is low, the utility model provides an engine cylinder block with high-efficiency heat dissipation for garden tools.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] An engine cylinder block with high efficiency heat dissipation for garden tools comprises a T-shaped main shell, the main shell comprises a horizontal part and a vertical part, one end of the horizontal part is provided with a cover with heat dissipation holes, coaxial rotating blades and fixed blades are arranged in the cover, a plurality of heat dissipation fins are arranged on the vertical part, the cover extends toward the vertical part to form an air suction cavity, wherein the rotating blades are driven to rotate by a crankshaft in the cylinder body.

[0008] Preferably, the rotating blades include a plurality of spiral rotating blades, and the fixed blades include a plurality of arc-shaped fixed blades.

[0009] Preferably, a plurality of through holes are provided on the horizontal shell, and one end of the through hole is located at the air suction cavity.

[0010] Preferably, the rotating fan blades include a central circular disc body and rotating blades arranged on the side walls of the disc body, and the circular disc body is provided with a plurality of air holes, and the air holes include at least three air holes opposite to the through holes.

[0011] Preferably, the crankshaft has a drive shaft extending out of the main housing, and the rotating fan is fixed on the drive shaft.

[0012] Preferably, the fixed fan blades and the cover are integrally formed.

[0013] Preferably, the heat dissipation holes include a plurality of circular through holes arranged at the end of the cover and a plurality of strip-shaped through holes arranged on the side wall of the cover.

[0014] Preferably, the rotating fan blade comprises a central circular disc body and rotating blades arranged on the side wall of the disc body, and the circular disc body is provided with a plurality of air holes, and the air holes include at least three air holes opposite to the through holes.

[0015] Preferably, an end cover is provided at the other end of the horizontal portion, and a plurality of air inlet holes are provided on the end cover.

[0016] Preferably, the cover extends to form an air suction cavity on one side of the heat sink, which wraps the spark plug power supply therein to dissipate heat around the power supply.

[0017] Compared with the prior art, the advantages of the utility model are as follows: the cylinder body is set as a T-shaped structure, and two groups of fan blades are set in the horizontal part to form a heat dissipation structure. After the engine is started, one group of fan blades rotates and is compressed at the other group of fan blades to form suction, and the extension of the cover expands the suction range to the heat sink of the vertical part to accelerate the air circulation outside the main shell, thereby accelerating the heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 It is a bottom view of the utility model;

[0021] Figure 3 It is a three-dimensional diagram of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the utility model;

[0023] Figure 5 It is an exploded view of the utility model;

[0024] Figure 6 It is an exploded view of the utility model;

[0025] In the figure: 10, main shell; 101, horizontal part; 1011, perforation; 102, vertical part; 1021, heat sink; 20, cover; 201, strip through hole; 202, circular through hole; 203, air suction cavity; 30, end cover; 301, air inlet; 40, rotating fan blade; 401, circular disk; 4011, air hole; 402, rotating blade; 50, rotating fan blade; 501, fixed blade. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0027] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings. Example

[0028] This embodiment mainly describes the subject of an engine cylinder block with high efficiency heat dissipation for garden tools, which is as follows:

[0029] Main program :

[0030] Garden tools use efficient heat dissipation engine cylinder blocks, such as Figure 1-6 As shown, it includes a T-shaped main housing 10, which includes a horizontal part 101 and a vertical part 102. One end of the horizontal part 101 is provided with a cover 20 with heat dissipation holes, and the cover 20 is provided with coaxial rotating blades 40 and fixed blades 50. The vertical part 102 is provided with a plurality of heat sinks 1021. The cover 20 extends toward the vertical part 102 to form an air suction cavity 203, wherein the rotating blades 40 are driven to rotate by the crankshaft in the cylinder body. In this scheme, the cylinder body is set as a T-shaped structure, and two groups of blades are set in the horizontal part 101 to form a heat dissipation structure. After the engine is started, one group of blades rotates and is compressed at the other group of blades to form air suction, and the extension of the cover 20 expands the air suction range to the heat sink 1021 of the vertical part 102 to accelerate the air circulation outside the main housing 10, thereby accelerating the heat dissipation.

[0031] Fan blade part :

[0032] like Figure 6As shown, the rotating blades 40 include a plurality of spiral rotating blades 401 , and the fixed blades 50 include a plurality of arc-shaped fixed blades 501 .

[0033] Specifically, the crankshaft has a driving shaft extending out of the main housing 10, and the rotating fan is fixed on the driving shaft.

[0034] Preferably, the fixed blades and the cover 20 are integrally formed.

[0035] Preferably, the rotating blades 40 include a plurality of spiral rotating blades 401, and the fixed blades 50 include a plurality of arc-shaped fixed blades 501. This structure utilizes the principle of a jet engine, and the airflow generated by the rotating blades 40 is compressed through the gaps of the fixed blades 50 to form suction.

[0036] like Figure 6 As shown, the rotating fan blade 40 includes a central circular disc body 401 and rotating blades 401 arranged on the side wall of the disc body. The circular disc body 401 is provided with a plurality of air holes 4011 , and the air holes 4011 include at least three air holes 4011 opposite to the through holes 1011 .

[0037] Channel section for heat dissipation :

[0038] like Figure 5 As shown, the shell of the horizontal part 101 is provided with a plurality of through holes 1011, and one end of the through hole 1011 is located at the air suction cavity 203. The through hole 1011 is used to dissipate heat from the shell of the horizontal part 101.

[0039] like Figure 3 As shown, the heat dissipation holes include a plurality of circular through holes 202 disposed at the end of the cover 20 and a plurality of strip-shaped through holes 201 disposed on the side wall of the cover 20. The heat dissipation holes are used to blow out the hot air sucked by the suction to accelerate air circulation.

[0040] like Figure 2 , 4 As shown in Figure 5, the other end of the horizontal part 101 is provided with an end cover 30, and the end cover 30 is provided with a plurality of air inlet holes 301. The air inlet cooperates with the through hole 1011 to form a channel connected to the outside for heat dissipation.

[0041] like Figure 6 As shown, the cover 20 extends to the side of the heat sink 1021 to form an air suction cavity to wrap the spark plug power supply to dissipate heat around the power supply. Since the power supply will burn when the temperature is too high, the power supply is set here and the air is sucked to cool it down to ensure normal operation of the power supply.

[0042] The above is a detailed introduction to the titles provided by the utility model. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An engine cylinder block with high efficiency heat dissipation for garden tools, characterized in that: It includes a T-shaped main shell, which includes a horizontal part and a vertical part. A cover with heat dissipation holes is provided at one end of the horizontal part, and coaxial rotating blades and fixed blades are provided in the cover. A plurality of heat dissipation fins are provided on the vertical part. The cover extends toward the vertical part to form an air suction cavity, wherein the rotating blades are driven to rotate by a crankshaft in the cylinder body; the rotating blades include a plurality of spiral rotating blades, and the fixed blades include a plurality of arc-shaped fixed blades.

2. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: A plurality of through holes are arranged on the shell of the horizontal part, and one end of the through hole is located at the air suction cavity.

3. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 2, characterized in that: The rotating fan blade comprises a central circular disc body and rotating blades arranged on the side wall of the disc body. The circular disc body is provided with a plurality of air holes, and the air holes comprise at least three air holes opposite to the through holes.

4. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: The crankshaft is provided with a driving shaft extending out of the main housing, and the rotating fan is fixed on the driving shaft.

5. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: The fixed fan blades and the cover are integrally formed.

6. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 4 or 5, characterized in that: The heat dissipation holes include a plurality of circular through holes arranged at the end of the cover and a plurality of strip through holes arranged at the side wall of the cover.

7. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: The rotating blades include a plurality of spiral blades, and the fixed blades include a plurality of arc-shaped blades.

8. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: The other end of the horizontal part is provided with an end cover, and the end cover is provided with a plurality of air inlet holes.

9. The engine cylinder block with high efficiency heat dissipation for garden tools according to claim 1, characterized in that: The cover extends to form an air suction cavity on one side of the heat sink, which wraps the spark plug power supply inside to dissipate heat around the power supply.

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