CN218377507U - Shock absorber with heat radiation structure and engine - Google Patents

Abstract

The application discloses a shock absorber with a heat dissipation structure and an engine, wherein the shock absorber comprises a shock absorber body and the heat dissipation structure, the heat dissipation structure comprises a plurality of cooling fins, the cooling fins are distributed spirally along the circumference, and at least one axial end face of the shock absorber body is provided with the heat dissipation structure; the damper further includes a cover plate covering the plurality of heat radiating fins. The fin that this application set up is the heliciform and distributes, and the terminal surface of shock absorber body, end cover form turbine structure, can accelerate the air flow on shock absorber body surface to accelerate to take away the heat that the shock absorber body distributed out with the cooling of accelerating shock absorber body.

Description

Shock absorber with heat radiation structure and engine

Technical Field

The utility model relates to an engine accessory technical field, concretely relates to shock absorber and engine with heat radiation structure.

Background

The crankshaft of the engine can be connected with a shock absorber, the types of the shock absorber are more, a typical shock absorber is a silicone oil shock absorber, and when the temperature is higher, silicone oil can be degraded, the shock absorption performance is reduced, and the service life of the shock absorber is influenced.

Therefore, the damper is provided with a heat dissipation structure, which is generally a corrugated fin or a fin, but the heat dissipation performance is still not satisfactory.

SUMMERY OF THE UTILITY MODEL

The application provides a shock absorber with a heat dissipation structure, which comprises a shock absorber body and the heat dissipation structure, wherein the heat dissipation structure comprises a plurality of heat dissipation fins which are spirally distributed along the circumference, and the heat dissipation structure is arranged on at least one axial end surface of the shock absorber body; the damper further includes a cover plate covering the plurality of heat radiating fins.

In a specific embodiment, a heat dissipation channel is formed between two adjacent heat dissipation fins, and the width of the heat dissipation channel is gradually reduced from outside to inside.

In one embodiment, the heat sink is an aluminum or copper or silver heat sink.

In a specific embodiment, an end face of the damper body is provided with an embedded groove, and a part of the heat radiating fin is embedded into the embedded groove and is welded and fixed.

In a specific embodiment, the end face of the damper body, on which the heat dissipation fins are arranged, is provided with a graphene layer, and the heat dissipation fins are in contact with the graphene layer; and/or the surface of the radiating fin is provided with a graphene layer.

In one embodiment, the distance between one of the heat dissipation fins and an adjacent one of the heat dissipation fins is larger than the distance between the other adjacent heat dissipation fin, a heat dissipation channel is formed between the two adjacent heat dissipation fins with the larger distance, and a partition is formed between the two adjacent heat dissipation fins with the smaller distance.

In one embodiment, the width of the heat dissipation channel is greater than two times or more than two times the width of the partition.

In one embodiment, the fins are arcuate.

In one embodiment, the damper is a silicone oil damper.

The application also provides an engine, which is provided with a crankshaft, wherein the crankshaft is provided with the shock absorber with the heat dissipation structure.

The fin that this application set up is the heliciform and distributes, and the terminal surface of shock absorber body, end cover form turbine structure, can accelerate the air flow on shock absorber body surface to accelerate to take away the heat that the shock absorber body distributed out with the cooling of accelerating shock absorber body.

Drawings

FIG. 1 is a schematic view of a damper body having a heat dissipating structure according to an embodiment of the present application;

fig. 2 is a schematic view of the heat dissipation structure of fig. 1 with the cover plate removed;

fig. 3 is a front view of fig. 2.

The reference numerals in fig. 1-3 are illustrated as follows:

100-a damper body; 100 a-shaft hole; 1001-end face;

200-a heat sink;

300-a cover plate;

a-a heat dissipation channel; a1-an external port; a2-an inner port; b-a partition.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-3, fig. 1 is a schematic view of a shock absorber with a heat dissipation structure in an embodiment of the present application; fig. 2 is a schematic view of the cover plate 300 of the heat dissipation structure of fig. 1; fig. 3 is a front view of fig. 2.

The damper is generally installed on a crankshaft of an engine to perform a damping function, and a shaft hole 100a is formed in the middle of the damper and is capable of being installed on the crankshaft. The damper in this embodiment includes a damper body 100 and a heat dissipation structure, the heat dissipation structure includes a plurality of fins 200 disposed on an end face of the damper body 100, the damper body 100 has two end faces distributed along an axial direction, each end face is in a shape of a disk, the two end faces are respectively defined as a first end face 1001 and a second end face, wherein the first end face 1001 is disposed with the plurality of fins 200, it is understood that the second end face may also be disposed with the heat dissipation structure, or it is also possible to dispose the heat dissipation structure on both end faces. In addition, the terms "axial," "radial," and "circumferential" are used herein to refer to the axial, radial, and circumferential directions of the damper body 100.

As shown in fig. 2, the plurality of fins 200 are spirally distributed along the circumference, that is, the plurality of fins 200 are spirally distributed along the circumference, and the heat dissipation structure further includes a cover plate 300, wherein the cover plate 300 covers the plurality of fins 200 and can be welded and fixed with the plurality of fins 200. In this way, the space between two adjacent heat dissipation fins 200 is covered by the first end 1001 of the damper body 100 and the cover plate 300, that is, a heat dissipation passage a is formed between two adjacent heat dissipation fins 200, the heat dissipation passage a is covered by the cover plate 300 and the first end 1001 of the damper body 100, and the air flow can flow inside the heat dissipation passage a along the extending direction of the heat dissipation passage a. In fig. 3, the inner port and the outer port of the heat dissipation channel a are both open, the inner port A2 is a port on one side near the center of the first end surface 1001 and is an outlet of the air flow, and the outer port A1 is an opposite port on the other side and is an inlet of the air flow.

As shown in fig. 2 and 3, since the plurality of heat dissipation fins 200 are spirally distributed, the extending direction of the formed heat dissipation channel a is inclined with respect to the radial direction of the first end surface 1001 of the damper body 100, that is, forms an angle with the radial direction. When the crankshaft of the engine rotates, the damper body 100 is driven to rotate, and since the heat dissipation fins 200 are distributed in a spiral shape and covered with the cover plate 300, which is equivalent to a turbine structure, the air around the radial periphery of the heat dissipation channel a can be screwed into the heat dissipation channel a from the outer port A1 of the heat dissipation channel a, and a flow path of the air flow entering the heat dissipation channel a is illustrated in fig. 3.

So set up, the heat radiation structure of turbine structure can accelerate the air flow on the surface of shock absorber body 100 to accelerate and take away the heat that shock absorber body 100 distributed with the cooling of accelerating shock absorber body 100. The shock absorber in the embodiment can be a silicon oil shock absorber, so that the rapid cooling can avoid the silicon oil degradation caused by high temperature, the shock absorption performance is kept stable, and the service life of the shock absorber is prolonged. Because the temperature can be reduced quickly, the heat balance can be avoided under a certain working condition, and the continuous temperature rise and deterioration of the shock absorber are avoided.

With continued reference to fig. 3, in this embodiment, a heat dissipation channel a is formed between two adjacent heat dissipation fins 200, a width of the heat dissipation channel a is gradually decreased from outside to inside, a width direction of the heat dissipation channel a is a dimension perpendicular to an extending direction of the heat dissipation channel a, and the extending direction of the heat dissipation channel a is a direction from the outer port A1 to the inner port A2. Because radiating passage A's width is set up by outer port A1 to interior port A2 convergent, is set up by the import to export convergent promptly, then can compress air gradually at the flow in-process, promote the velocity of flow, reduce air temperature to further improve the cooling effect.

Further, as shown in fig. 3, the plurality of fins 200 in this embodiment are divided into a plurality of pairs, and the interval distance between each pair of fins 200 is smaller than the interval distance between two adjacent pairs of fins 200. One pair of the heat sinks 200 may be defined as a first heat sink 201 and a second heat sink 202, respectively, and one heat sink 200 of another pair of heat sinks adjacent to the first heat sink 201 may be defined as a third heat sink 203.

At this time, the distance between the first heat sink 201 and the adjacent second heat sink is smaller than the distance between the first heat sink 201 and the third heat sink 203, the width of the heat dissipation channel a formed between the first heat sink 201 and the third heat sink 203 with the larger distance is wider, and the width of the channel formed between the first heat sink 201 and the second heat sink 202 with the smaller distance is narrower, so that most of the airflow enters from the heat dissipation channel a to generate a rotational flow and accelerate cooling, and the airflow does not enter or only has a small portion of the airflow entering the narrower channel, so the narrower channel can be defined as the partition B.

So set up, partition portion B does benefit to and separates adjacent two heat dissipation channel A, avoids the air current to produce the vortex because the distance is too close when getting into two heat dissipation channel A's outer port A1. It is understood that the inner and outer ports of the partition B may be closed. The width of the heat dissipation channel A can be more than two times or more than two times of the width of the partition part B, so that the aim of better partition is fulfilled. In addition, a plurality of fins 200 are uniformly distributed in the circumferential direction, and a main heat dissipation channel a may be formed between every two adjacent fins 200. The above-mentioned mode of setting up fin 200 in pairs only more does benefit to the flow heat dissipation of air current, reduces the vortex.

In addition, with respect to the above embodiment, the heat sink 200 may be an aluminum heat sink 200, and the aluminum heat sink 200 has a high thermal conductivity and a light weight, so that the heat dissipation effect of the heat dissipation structure can be further improved. Of course, the heat sink 200 may be made of other materials with high thermal conductivity, such as copper heat sink 200 or silver heat sink 200, and the aluminum heat sink 200 has the advantages of light weight and low cost while meeting the requirement of high thermal conductivity.

In addition, the heat sink 200 in the above embodiment may be welded to the first end surface 1001 of the damper body 100, the heat sink 200 is made of a metal structure and has a sheet shape, and a narrow side of the sheet shape is in contact with the first end surface 1001 of the damper body 100. Moreover, the first end face 100 of the damper body 100 is provided with an embedded groove, and the part of the heat dissipation sheet 200 can be inserted into the embedded groove and then welded, so that a cavity is not formed on the surfaces of the heat dissipation sheet 200 and the first end face 1001, the heat dissipation uniformity of the damper can be improved, and the local temperature is prevented from being high. Of course, the heat sink 200 may be fixed to the first end surface 1001 of the damper body 100 by other means, such as fastening with a fastener, etc., but it is apparent that the welding operation in this embodiment is more convenient.

In the above embodiment, the first end surface 1001 provided with the heat sink 200 in this embodiment is provided with the graphene layer, that is, the first end surface 1001 is the graphene layer, and the graphene layer may be sprayed on the first end surface 1001. Graphene is a two-dimensional carbon nano material with hexagonal honeycomb lattices formed by carbon atoms by SP ^2 hybridized orbits, and the material has good heat conduction performance, and the theoretical heat conduction coefficient is as high as 5.3KW/m.k. The heat dissipation fins 200 are in direct contact with the graphene layers, on one hand, the graphene layers can rapidly transfer heat of the shock absorber to air, and on the other hand, the graphene layers can transfer the heat to the heat dissipation fins 200 in a separated mode, so that heat dissipation to the outside is accelerated, and the heat dissipation efficiency is improved.

The surface of the heat sink 200 in this embodiment may also be provided with a graphene layer, which functions in the same principle as the graphene layer provided on the first end surface 1001, and transfers heat to the outside air as soon as possible by using the high thermal conductivity of the graphene material.

It should be noted that, the heat dissipation fins 200 in this embodiment are arc-shaped, as shown in fig. 3, the arc-shaped heat dissipation fins 200 are arranged, so that when the adjacent heat dissipation fins 200 form the heat dissipation channel a, the heat dissipation channel a is also approximately arc-shaped, and when the airflow enters the heat dissipation channel a to form a rotational flow, the flow is smoother, the kinetic energy loss of the air can be reduced, the air flow is accelerated, and the heat dissipation efficiency is improved. It should be noted that the heat sink 200 is not limited to be arc-shaped, for example, the heat sink 200 may be a straight sheet structure, as long as the heat sink is spirally distributed, and the plurality of heat dissipation channels a form a rotational flow along the circumferential direction.

The embodiment also provides an engine, the engine comprises a crankshaft, a damper body is arranged at the end part of the crankshaft, the damper body is the damper body with the heat dissipation structure in any embodiment, the beneficial effects are the same, and the repeated discussion is omitted.

The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (10)

1. A shock absorber with a heat dissipation structure is characterized by comprising a shock absorber body and the heat dissipation structure, wherein the heat dissipation structure comprises a plurality of heat dissipation fins which are spirally distributed along the circumference, and at least one axial end face of the shock absorber body is provided with the heat dissipation structure; the damper further includes a cover plate covering the plurality of heat radiating fins.

2. The damper with a heat dissipating structure according to claim 1, wherein a heat dissipating passage is formed between two adjacent heat dissipating fins, and a width of the heat dissipating passage is gradually reduced from outside to inside.

3. The damper with a heat dissipating structure according to claim 1, wherein the heat dissipating fins are aluminum or copper or silver heat dissipating fins.

4. The damper with a heat dissipation structure as recited in claim 1, wherein an end surface of the damper body is provided with an insertion groove, and a portion of the heat sink is inserted into the insertion groove and fixed by welding.

5. The shock absorber with the heat dissipation structure as set forth in claim 1, wherein an end face of the shock absorber body provided with the heat dissipation fins is provided with a graphene layer, the heat dissipation fins being in contact with the graphene layer; and/or the surface of the heat radiating fin is provided with a graphene layer.

6. The damper with a heat dissipating structure according to any one of claims 1 to 5, wherein a distance between one of the heat dissipating fins and an adjacent one of the heat dissipating fins is larger than a distance between the adjacent other of the heat dissipating fins, a heat dissipating passage is formed between the adjacent two of the heat dissipating fins having a larger distance, and a partition is formed between the adjacent two of the heat dissipating fins having a smaller distance.

7. The damper with a heat dissipation structure as set forth in claim 6, wherein the width of the heat dissipation channel is greater than twice or more than twice the width of the partition portion.

8. The damper with a heat dissipating structure according to any one of claims 1 to 5, wherein the heat dissipating fins are arc-shaped.

9. The damper with a heat dissipating structure according to any one of claims 1 to 5, wherein the damper is a silicone oil damper.

10. An engine characterized by being provided with a crankshaft mounting the shock absorber with a heat dissipation structure as recited in any one of claims 1 to 7.

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