CN210509355U - Engine heat sink - Google Patents

Abstract

The utility model relates to an engine heat abstractor, including a cooling fan, a fan dustcoat, a stopper and an interlock subassembly. The fan outer cover is provided with a gate and a fixing part, the brake is inserted on the engine, and a temperature sensing part filled with a heat sensing substance, a brake spring and an actuating part are arranged in the brake, so that the brake can selectively provide or not provide a braking effect according to different temperatures of the engine. The linkage assembly comprises a pull rope, a gate spring and a linkage rod, and is used for enabling the brake and the gate to have a linkage effect. Therefore, the utility model discloses successfully solved the cooling fan of engine and all continuously carried out cooling's problem under different engine temperatures, successfully compromise energy-conserving and cooling efficiency's creation purpose, improved among the prior art engine overcooling's problem when warm-up process or partial load.

Description

Engine heat sink

Technical Field

The present invention relates to an engine heat dissipation device, and more particularly to an engine heat dissipation device disposed on an engine crankshaft housing.

Background

In the existing forced air cooling internal combustion engine, a cooling fan is driven by a crankshaft, and the crankshaft simultaneously gives motion energy required by the fan when rotating so as to meet the cooling requirement and avoid the damage of the engine caused by overheating. This movement will result in excessive cooling during warm-up and partial load, which will cause the engine to not reach operating temperature quickly, requiring more friction losses to be overcome and additional fuel injection compensation to be provided, wasting a lot of energy.

In order to shorten the warm-up time of the engine, an engine temperature adjusting device is developed, and the cooling air quantity is controlled by changing the area of an air inlet of a fan, so that the problem of excessive cooling is solved. However, although the temperature-adjusting device for the engine has been successfully used to drive the power source by the temperature signal to achieve the requirement of controlling the cooling air volume, if the focus is on energy saving, the device needs the engine to provide the required energy every time the device is moved, and the best efficiency improvement cannot be achieved.

From the above, it can be seen that there is still room for further reducing the energy consumption, so that the fuel consumption of the engine is more economical. The inventor is concerned with the spirit of active creation, and needs to find an engine heat dissipation device capable of solving the above problems, and the utility model discloses a few research experiments are completed.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide an engine heat dissipation device, through the setting of mechanical temperature brake, the problem that current cooling fan can't adjust according to engine operating temperature is solved, make the cooling air volume can receive control and effectively avoid the engine overcooling, therefore the area of admitting air of cooling fan can be adjusted temporarily when warm-up in-process and partial load, and need not overcome more friction losses and provide extra oil spout compensation, reach energy-conserving and reach operating temperature's effect fast.

To achieve the above object, the present invention provides an engine heat dissipation device disposed on an engine having a crankshaft, which mainly includes a cooling fan, a fan housing, a brake and a linkage assembly. The cooling fan set is arranged at the tail end of the crankshaft and is driven by the crankshaft, so that the crankshaft can provide the required motion energy for the cooling fan when rotating, and the damage of the engine caused by overheating can be avoided. The fan outer cover is provided on the cooling fan, and has a shutter for controlling the flow rate of the intake air of the cooling fan and a fixing portion for fixing a shutter spring described later. The brake is inserted on the engine, and a temperature sensing part filled with a thermal sensing substance, a brake spring and an actuating part used for pushing the brake spring are arranged in the brake, so that the brake can selectively provide or not provide a braking effect according to different temperatures of the engine, and further the gate is opened or closed. The linkage assembly comprises a pull cable, a gate spring and a linkage rod, wherein one end of the gate spring is connected with the fixed part, and the other end of the gate spring is connected with the linkage rod, so that the linkage rod bears the spring force of the gate spring; on the other hand, one end of the cable is connected with the actuating part, and the other end is connected with the linkage rod, so that the linkage rod has the braking effect.

When the temperature of the engine is lower than a working temperature, the stay cable overcomes the spring force of the gate spring to pull the linkage rod to close the gate, so that the engine is helped to be quickly warmed up; when the engine temperature is higher than the working temperature, the thermal sensing substance expands to push the actuating part, so that the actuating part overcomes the spring force of the brake spring to move towards a braking direction, and the gate spring overcomes the pulling force of the inhaul cable to pull the linkage rod to open the gate.

Through the above design, the utility model discloses successfully solved the cooling fan of engine and all continuously carried out cooling's problem under different engine temperatures, and utilized simple arresting gear and link gear to reach above-mentioned appeal, successfully compromise energy-conservation and cooling efficiency's creation purpose, improved among the prior art engine overcooling's problem when warm-up process or partial load.

The temperature sensing part can be arranged below the central line of a fan. Therefore, the temperature value measured below the central line of the fan is closer to the actual engine temperature, and no measurement error is generated.

The temperature sensing part may further include a scale mark. Therefore, part of the temperature sensing part is soaked in the engine oil, and a rider can quickly know the current engine oil level through the scale marks on the outer surface, so that the scale marks have the function of indicating the organic oil level.

The thermal sensing substance can be a composite material or a thermal wax substance. Therefore, the thermal sensing substance can have the characteristics of thermal expansion and contraction when meeting cold, and provides the braking kinetic energy required by the utility model.

The operating temperature may be 90 degrees celsius. That is, the motion temperature of the thermal sensing material is 90 degrees celsius, and the thermal sensing material expands and pushes the actuating portion when the operating temperature is higher than 90 degrees celsius, whereas the thermal sensing material contracts and returns the actuating portion to the initial state when the operating temperature is lower than 90 degrees celsius.

The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the claimed invention. Other objects and advantages of the present invention will become apparent from the following description and drawings.

Drawings

Fig. 1 is a perspective view of an engine heat sink according to a preferred embodiment of the present invention with a closed gate.

Fig. 2 is a schematic view of the engine heat sink of fig. 1 with the brake not in motion.

Fig. 2A is a schematic view of another aspect of the brake of the engine heat sink of fig. 1.

Fig. 3 is a perspective view of the engine heat sink according to a preferred embodiment of the present invention when the gate is opened.

Fig. 4 is a schematic view of the engine heat sink of fig. 3 with the brake in motion.

Description of the main element symbols:

1 Engine heat sink

2 Cooling Fan

3 outer cover of fan

31 gate

32 fixed part

4, 4' brake

41 temperature sensing part

411 Heat-sensitive substance

42 brake spring

43 operating part

5 linkage assembly

51 stay cable

52 gate spring

53 trace

P braking direction

Center line of X fan

Detailed Description

Please refer to fig. 1 and fig. 2, which are a perspective view of the engine heat sink according to a preferred embodiment of the present invention with a closed gate and a schematic view of the state of the brake of the engine heat sink shown in fig. 1 being not in motion. An engine heat sink 1 is shown, which is disposed on an engine (not shown) having a crankshaft, and includes a cooling fan 2, a fan housing 3, a brake 4, and a linkage assembly 5. The cooling fan 2 is assembled at the end of the crankshaft, and both are pivoted coaxially, so that the crankshaft will simultaneously give the cooling fan 2 the required kinetic energy when rotating, and its main function is to prevent the engine from being damaged by overheating.

The utility model discloses in, engine heat abstractor 1 is except can reaching the effect of cooling engine temperature, further hopes when the engine in warm-up in-process or only provide partial load, can reduce or stop cooling fan 2's the motion amount of wind in good time, so the utility model discloses it is right cooling fan 2's intake will carry out effective control. Therefore, the present invention is directed to a considerable improvement of the design of the fan housing 3, in this embodiment, the fan housing 3 is covered outside the cooling fan 2, and has a gate 31 and a fixing portion 32, the gate 31 is constructed by three blades to control the air intake area of the cooling fan 2, and the fixing portion 32 is used to fix one side of the gate spring 52, which will be described later, to give a sufficient supporting force.

In addition, the engine heat sink 1 has a brake 4 controlled by the engine temperature, the brake 4 is inserted on the engine, and the inside of the brake 4 is provided with a temperature sensing part 41 filled with a thermal sensing material 411, a brake spring 42 and an actuating part 43 for pushing the brake spring 42. In the present embodiment, the temperature sensing unit 41 is disposed below a fan center line X of the cooling fan 2, and the measured temperature value is closer to the actual engine temperature, so that no measurement error occurs. In addition, the thermal sensing substance 411 is a composite material or a hot wax substance, which has the characteristics of thermal expansion and contraction when meeting cold, and provides the braking kinetic energy required by the utility model. Through the above features, the temperature sensing unit 41 can automatically convert the heat energy into the braking kinetic energy to control the opening or closing of the gate 31 based on the engine temperature, instead of spending additional energy to control the movement of the gate 31, which is a novel creation with high energy saving.

Please refer to fig. 2A, which is a schematic diagram of another aspect of the brake of the engine heat dissipation device of fig. 1. As shown in the figure, the outer surface of the temperature sensing part 41 of the brake 4' further includes a scale mark 412. Therefore, part of the temperature sensing unit 41 will be immersed in the engine oil, and the scale mark 412 on the outer surface enables the rider to quickly know the current engine oil level, so that the scale mark 412 can have the function of indicating the organic oil level.

Referring back to fig. 1 and 2 again, the engine heat sink 1 of the present invention uses the brake 4 as a power supply and control device, and controls the opening and closing of the gate 31 through a mechanical structure. The mechanical structure is a linkage assembly 5, which includes a pulling cable 51, a gate spring 52 and a linkage rod 53. One end of the gate spring 52 is connected to the fixing part 32, and the other end is connected to the linkage 53, so that the linkage 53 bears the spring force of the gate spring 52; on the other hand, one end of the cable 51 is connected to the operating part 43, and the other end is connected to the linkage 53, so that the resultant force of the cable 51 and the operating part 43 is synchronously transmitted to the linkage 53, and therefore the resultant force and the spring force of the gate spring 52 determine the braking direction of the linkage 53, and finally the gate 31 is selectively opened or closed.

In the present invention, the timing of opening or closing the gate 31 is closely related to the engine temperature, and in order to achieve the energy saving and cooling efficiency, a working temperature is set as the threshold value of the movement of the gate 31, in this embodiment, the working temperature is set to 90 degrees celsius, but not limited to this, so that the thermal sensitive material 411 expands and pushes the actuating portion 43 when the working temperature is higher than 90 degrees celsius, and conversely, the thermal sensitive material 411 contracts to return the actuating portion 43 to the initial state when the working temperature is lower than 90 degrees celsius.

Therefore, when the engine temperature is lower than an operating temperature, as shown in fig. 1 and fig. 2, at this time, the thermal sensing material 411 of the temperature sensing portion 41 is maintained in an initial state or contracted from an expanded state, the actuating portion 43 does not apply a compression force to the gate spring 52, so the pulling cable 51 can pull the linkage rod 53 against the spring force of the gate spring 52 to close the gate 31, and the blades of the gate 31 can shield the air inlet of the cooling fan 2, temporarily close the cooling effect of the cooling fan 2, help the engine warm up quickly, and can avoid excessive cooling at low load.

Fig. 3 and 4 are a perspective view of the engine heat sink in a preferred embodiment of the present invention with the gate opened and a schematic view of the engine heat sink with the brake moved in fig. 3. When the engine temperature is higher than the above operating temperature, the thermal sensing material 411 of the temperature sensing part 41 expands to push the actuating part 43, so that the actuating part 43 overcomes the spring force of the braking spring 42 to move towards a braking direction P, and at the same time, the pulling cable 51 moves towards the braking direction P, so that the gate spring 52 overcomes the pulling force of the pulling cable 51 to pull the linkage rod 53 to open the gate 31, and at this time, the blades of the gate 31 do not shield the air inlet of the cooling fan 2, thereby temporarily opening the cooling efficiency of the cooling fan 2, helping the engine temperature adjustment, and avoiding the engine overheating phenomenon.

The above-described embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should be determined by the claims rather than by the limitations of the above-described embodiments.

Claims (5)

1. An engine heat sink is arranged on an engine with a crankshaft, and is characterized by comprising:

a cooling fan, assembled at the end of the crankshaft and driven by the crankshaft;

a fan housing, which is covered on the cooling fan and is provided with a gate and a fixing part;

a brake inserted on the engine and containing a temperature sensing part filled with thermal sensing material, a brake spring and an action part for pushing the brake spring; and

a linkage component, including a guy cable, a gate spring and a linkage rod, one end of the gate spring is connected with the fixed part, the other end is connected with the linkage rod, so that the linkage rod bears the spring force of the gate spring, one end of the guy cable is connected with the action part, the other end is connected with the linkage rod, so that the linkage rod has a braking effect;

when the temperature of the engine is lower than a working temperature, the dragline overcomes the spring force of the gate spring to pull the linkage rod to close the gate, so as to help the engine warm up quickly; when the engine temperature is higher than the working temperature, the thermal sensing substance expands to push the actuating part, so that the actuating part overcomes the spring force of the brake spring to move towards a braking direction, and the gate spring overcomes the pulling force of the inhaul cable to pull the linkage rod to open the gate.

2. The engine heat sink of claim 1, wherein the temperature sensing unit is disposed below a center line of a fan.

3. The engine heat sink of claim 1, wherein the temperature sensing portion further comprises a scale mark.

4. The engine heat sink of claim 1, wherein the thermal responsive substance is a composite material or a thermal wax substance.

5. The engine heat sink of claim 1, wherein the operating temperature is 90 degrees celsius.

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