TWM485956U - Heat-dissipated structure for piston head - Google Patents

Description

Cylinder head heat dissipation structure

The present invention relates to a heat dissipation structure of a cylinder head, in particular to a method for improving the cooling and cooling efficiency of the engine cylinder as a whole, preventing the engine cylinder from being damaged due to overheating failure, and further increasing the practical effect in its overall implementation. Innovative designer of the heat dissipation structure of the characteristic cylinder head.

Generally speaking, it is common to use various types of engines as power sources to drive the machines, so that the machines can be driven by the engine, and the engine is mainly used to make the intake valves. Open and move the piston downward to draw the air and fuel mixture into the cylinder, close the intake valve and move the piston upward to compress the mixture in the cylinder, and use the spark plug to compress the compressed mixture in the cylinder. Ignition, let the mixture burn and explode and push the piston down. Then, when the valve of the exhaust gas is opened and the piston moves up again, the exhaust gas in the cylinder is exhausted to utilize the repeated circulation action of each piston of the engine. To achieve the purpose of driving the implement; while the engine cylinder is in operation, it will generate high-temperature heat. When the cylinder is in a high temperature for a long time but cannot properly lower the temperature, it may easily cause the cylinder to become embrittled or even burst.

Therefore, the manufacturer has developed a "Cylinder Head Rocker Cover with Heat Dissipation Structure" No. M428994, which was issued on May 11, 101, which is disposed on a rocker chamber opening of an engine cylinder. The cylinder head rocker cover of the heat dissipation structure comprises: a main body portion, a cover surface covering the opening of the rocker arm chamber, and a bearing surface opposite to the cover surface; and a heat dissipating portion disposed on the bearing surface The heat dissipating portion includes a plurality of heat dissipating guides extending from the center of the carrying surface to the outer arc radiating, and a plurality of heat dissipating spaces disposed between the heat dissipating fins for gas to pass therethrough.

However, the above-mentioned "cylinder head rocker cover with heat dissipation structure" can achieve the expected effect of dissipating heat from the engine cylinder, but it is also found in its actual implementation that the structure is carried on the main body of the cylinder head rocker cover. The heat dissipating portion is arranged on the surface, and the covering surface of the main body portion of the rocker arm cover of the cylinder head is still in a plane shape, so that the oil for cooling and dissipating flowing in the cylinder can only be combined with the flat cylinder head rocker cover. The contact surface of the main body portion is in contact with each other, so that the oil has a small contact area with the main body portion of the rocker arm cover of the cylinder head, and the heat energy cannot be effectively transmitted to the main body portion of the rocker arm cover of the cylinder head, so that the cooling and heat dissipation effect is limited. The cooling and cooling effect cannot be achieved, so that there is still room for improvement in the overall structural design.

The reason is that, in view of this, the creators have been researching and improving the existing structures and deficiencies by providing rich experience in design and development of the relevant industries for many years, and providing a heat dissipation structure for the cylinder heads in order to achieve better practical value. By.

The main purpose of this creation is to provide a heat dissipation structure for the cylinder head, which mainly causes the cooling and cooling oil flowing in the rocker arm chamber of the engine cylinder head to flow between the flow guiding channels of the groove portion of the rocker arm outdoor cover. After that, the heat generated by the engine cylinder is absorbed by the internal heat transfer fins of the engine cylinders which are brought by the engine oil to the engine cylinder head to increase the contact area between the oil and the inner fins, and the heat energy is enhanced. The efficiency of the absorption of the outdoor cover of the rocker arm can relatively improve the cooling and heat dissipation efficiency of the engine cylinder as a whole, and prevent the engine cylinder from being damaged by the overheating fault, and the utility model has more practical utility characteristics in its overall implementation.

The main purpose and effect of the heat dissipation structure of the cylinder head of the present invention are achieved by the following specific technical means:

The rocker arm chamber of the engine cylinder head is mainly provided with a rocker arm outdoor cover; wherein:

The rocker arm outdoor cover has a groove portion recessed in the rocker arm chamber corresponding to the engine cylinder head at the inner end surface, and a plurality of inner heat dissipation fins are arranged in the groove portion to form between the inner heat dissipation fins There are diversion channels.

In a preferred embodiment of the heat dissipation structure of the cylinder head of the present invention, the outer end surface of the rocker arm outdoor cover is planar.

In a preferred embodiment of the heat dissipation structure of the cylinder head of the present invention, the outer end surface of the rocker arm outer cover is arranged to be convexly formed with a plurality of outer heat dissipation fins.

In order to make the technical content, creative purpose and the effect achieved by this creation more complete and clear, please elaborate below, and please refer to the drawings and drawings:

First of all, please refer to the schematic diagram of the three-dimensional exploded structure of the first picture and the schematic diagram of the combination of the second picture. The creation is mainly based on the rocker chamber (11) of the engine cylinder head (1). Arm outdoor cover (2); where:

The rocker arm outdoor cover (2) is recessed and formed with a groove portion (21) corresponding to the rocker arm chamber (11) of the engine cylinder head (1) at the inner end surface, and in the groove portion (21) A plurality of inner fins (22) are arranged to form a flow guiding channel (23) between the inner fins (22).

In this way, the creation is used in operation, so that when the engine cylinder is in operation, since there is cooling and cooling oil flowing in the rocker chamber (11) of the engine cylinder head (1), the oil is It will flow through the flow guiding channel (23) between the inner heat radiating fins (22) of the groove portion (21) of the rocker arm outdoor cover (2), and the oil flows through the respective flow guiding channels (23). During the process, the heat generated by the engine cylinders is carried by the oil to the diversion channels (23) of the engine cylinder head (1), so that the heat energy of the oil is dissipated by the sides of the respective flow channels (23). The fins (22) are absorbed to increase the contact area between the oil and the inner fins (22), and enhance the efficiency of the heat energy being absorbed by the rocker arm cover (2), thereby improving the cooling and cooling efficiency of the engine cylinder as a whole.

In addition, the inner end surface of the rocker arm outdoor cover (2) of the present invention is arranged with a plurality of inner heat dissipation fins (22) in the groove portion (21), so that a guide channel is formed between the inner heat dissipation fins (22). (23), and the outer end surface of the rocker arm outdoor cover (2) may not only be planar, but please refer to the third embodiment of the present invention for a three-dimensional exploded structure diagram and the fourth figure. In another embodiment, a schematic cross-sectional structural view is shown. The outer end surface of the rocker arm outdoor cover (2) can also be arranged to protrude and form a plurality of external heat dissipation fins (24), so that when the oil carries heat energy to the inner heat dissipation fin After the sheet (22) is absorbed, the rocker arm outdoor cover (2) can quickly transfer the heat absorbed by the inner heat sink fins (22) to the outer heat sink fins (24), and the outer heat sink fins (24) The air is in contact with each other so that the heat can be quickly dissipated into the air by the external fins (24) by the air flow, thereby achieving better heat dissipation.

By the above, the composition and use of the creation structure can be seen that, compared with the existing structure, this creation mainly makes the cooling and cooling oil flowing in the rocker arm of the engine cylinder head can be shaken. The flow channels between the groove portions of the outer cover of the arm flow, so that the heat generated by the engine cylinder is absorbed by the heat dissipation fins on both sides of the guide channels of the engine cylinder head. Increasing the contact area between the oil and the inner fins, and enhancing the efficiency of the heat absorbed by the rocker arm cover, the relative cooling efficiency of the engine cylinders can be improved, and the engine cylinders can be prevented from being damaged due to overheating faults. The overall implementation of the use of more practical features.

The above-mentioned embodiments or drawings are not intended to limit the structure of the present invention, and any suitable variations or modifications of those skilled in the art should be considered as not departing from the scope of the invention.

In summary, the present embodiment can achieve the expected use efficiency, and the specific structure disclosed is not only found in similar products, nor has it been disclosed before the application, and has fully complied with the requirements and requirements of the Patent Law.爰Proposing an application for a new type of patent in accordance with the law, and pleading for a review and granting a patent, it is really sensible.

(1)‧‧‧Engine cylinder head

(11) ‧‧‧Rocking arm room

(2) ‧‧‧ rocker arm cover

(21) ‧‧‧ Groove

(22) ‧ ‧ internal heat sink fins

(23) ‧‧‧ Diversion channel

(24) ‧‧‧ External heat sink fins

The first picture: a schematic diagram of the three-dimensional decomposition structure of the creation

The second picture: a schematic cross-sectional structure of the creation

Third: Schematic diagram of a three-dimensional exploded structure of another embodiment of the present creation

Fourth figure: a schematic cross-sectional structure diagram of another embodiment of the present creation

(1)‧‧‧Engine cylinder head

(11) ‧‧‧Rocking arm room

(2) ‧‧‧ rocker arm cover

(21) ‧‧‧ Groove

(22) ‧ ‧ internal heat sink fins

(23) ‧‧‧ Diversion channel

Claims (3)

The heat dissipation structure of the cylinder head is mainly provided with a rocker arm outdoor cover corresponding to the rocker arm chamber of the engine cylinder head; wherein: the rocker arm outdoor cover is formed on the inner end surface corresponding to the rocker arm chamber of the engine cylinder head In the groove portion, a plurality of inner fins are arranged in the groove portion, and a flow guiding channel is formed between the inner fins. The heat dissipation structure of the cylinder head according to claim 1, wherein the outer end surface of the rocker arm outdoor cover is planar. The heat dissipation structure of the cylinder head according to the first aspect of the invention, wherein the outer end surface of the rocker arm outer cover is arranged to be convexly formed with a plurality of outer heat dissipation fins.