CN216795539U - Oblique fin type radiator - Google Patents

Abstract

The utility model discloses an inclined fin type radiator, wherein radiating fins of the radiator are obliquely arranged on the radiator, an air flow channel is formed between every two adjacent radiating fins, and the radiating fins with larger distance from a heat source are shorter. The inclined fin type radiator has the advantages that the radiating fins are arranged on the radiator in an inclined mode, the radiating area is effectively utilized and increased, and the radiating effect is improved.

Description

Oblique fin type radiator

Technical Field

The utility model relates to the technical field of heat dissipation, in particular to an inclined fin type heat radiator.

Background

The heat exchanger fins often have the heat transfer area of the fins below the heat source not enough, and the fins far away from the heat source can not provide effective heat dissipation capacity due to reasons such as heat transfer distance. However, the heat sink is often in a lower grade in the design link, which results in the volume of the heat sink being limited, and the problem cannot be solved by using a heat sink with a larger volume.

For example: CN201653232U, have special arrangement and structure through its fin, realized induced drafting and the parallel two-way radiating mode of induced air, the heat transfer of coming wind of make full use of two directions realizes the formula of induced drafting of inhaling external new trend and utilizes the hot-blast convection current of forcing through the condenser to dispel the heat, thereby reached and carried out high-efficient radiating effect to components and parts in the air conditioner, its shortcoming is: the cooling effect on the air conditioner is general; and is inconvenient to transport

CN203192783U is formed by transversely arranging at least one row of heat dissipation fins on the upper surface of the heat sink base plate, wherein each row of heat dissipation fins extends from one side of the transverse edge of the heat sink base plate to the other side. Transversely be provided with chip reservation region and at least a row of support on the downside surface of radiator base plate and separate the muscle, chip reservation region deviates the radiator base plate center sets up, support and separate the muscle and be located reservation region one side, its shortcoming is: require a large fixed position and are not suitable for air conditioners

CN104716113B sets a through hole on the heat sink body corresponding to the electronic component to be radiated, the electronic component to be radiated is mounted on the circuit board and located between the circuit board and the heat sink body, a gap exists between the electronic component to be radiated and the heat sink body, the gap is communicated with the through hole, the filling material is injected into the through hole and filled into the gap, and the disadvantage is: and the installation procedure is increased, and the structural reliability of the pcb is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an inclined fin type radiator, which effectively utilizes and increases the radiating area and improves the radiating effect by arranging radiating fins on the radiator in an inclined manner.

In order to achieve the purpose, the utility model adopts the main technical scheme that:

the inclined fin type radiator is characterized in that radiating fins with the length being shorter as the radiating fins are farther away from a heat source, two adjacent radiating fins are arranged at intervals to form an air flow channel, and the radiating fins are obliquely arranged on the radiator.

Preferably, the inclined direction of the heat dissipation fins is consistent with the flowing direction of air at the accessory of the heat sink.

Preferably, the inclination angle of the heat dissipation fin is θ, and

wherein:

a₁、a₂the shortest distance (unit mm) from the heat source to the left and right ends of the heat sink 1;

b₁、b₂the shortest distance (in mm) from the heat source to the front and rear ends of the heat sink 1.

Preferably, the optimal inclination angle of the heat dissipation fins is as follows:

wherein:

a₁、a₂the shortest distance (unit mm) from the heat source to the left end and the right end of the radiator;

b₁、b₂the shortest distance (unit mm) from the heat source to the front end and the rear end of the radiator.

Preferably, the surface of the radiator corresponding to the radiating fins is a rectangular surface, and θ is an included angle between the normal of the radiating fins and the edge of the radiator located on one side of the thickness direction of the radiating fins.

Preferably, the optimal inclination angle of the heat dissipation fins

Wherein:

θ_maxthe maximum inclination angle (unit is degree) of the radiating fin;

q is the heat generation amount (in W) of the designed heating element;

w is the theoretical maximum heat dissipation (in W) for the heat sink design.

The utility model has at least the following beneficial effects:

according to the inclined fin type radiator, ton shares favor that the radiating fins are obliquely arranged on the radiator, so that the local high temperature phenomenon of the radiating fins caused by the position of a heat source of the radiator is avoided, the effective heat exchange area of the radiator is increased, and the radiating efficiency is further improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a heat sink with heat dissipation fins in the prior art.

Fig. 2 is a schematic view of the inclined fin type heat sink of the present invention.

Detailed Description

The embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.

Referring to fig. 1 and 2, the utility model provides an inclined fin type heat sink, wherein the heat sink 1 is provided with heat dissipation fins 2 with the length being shorter as the heat dissipation fins are farther from a heat source, two adjacent heat dissipation fins 2 are arranged at intervals to form an air flow channel, and the heat dissipation fins 2 are obliquely arranged on the heat sink 1, by adopting the scheme, on the premise of not changing the whole volume of the heat sink 1, the fins below the heat source are increased by obliquely designing the fins, the fins far from the heat source are cut short, so that the effective heat dissipation area of the heat sink 1 is increased, meanwhile, the inclined direction and angle of the heat dissipation fins 2 can be set according to the air flow direction in the space where the heat sink 1 is located, so that the flow resistance of the flow channel of the inclined heat dissipation fins 2 is not increased, specifically, the inclined direction of the heat dissipation fins 2 is consistent with the air flow direction of the accessories of the heat sink 1, the local high-temperature phenomenon of the radiating fins 2 caused by the position of the heat source of the radiator 1 can be directly and effectively solved, the effective heat exchange area of the radiator 1 is increased, and the radiating efficiency is further improved.

The inclined fins require the length of the fins below the heat source to be increased, but cannot generate a large negative influence (increase of flow resistance of the flow channel) on the air flowing state of the flow channel of the heat sink 1, so that the maximum inclined angle exists in the patent design, wherein the inclined angle of the radiating fins 2 is theta, and

wherein:

a₁、a₂the shortest distance (unit mm) from the heat source to the left and right ends of the heat sink 1;

b₁、b₂the shortest distance (unit mm) from the heat source to the front end and the rear end of the radiator 1;

meanwhile, a design heat source is defined:

because one radiator 1 corresponds to a plurality of heating elements, the heating elements which meet the conditions are selected as design heating sources (the condition 1 is that the heating value is maximum, the condition 2 is that the element protection temperature is low, for example, if the heating values of 2 heat sources are consistent, the element with low protection temperature in two elements is selected), the heat flow density of a substrate corresponding to the heat source is taken as a heat radiation object, the equipotential surface drawing is carried out on the numerical value of the heat flow density, and the heat flow area is defined in the condition that the ratio of the heat flow density of the lowest equipotential surface to the heat flow density of the highest equipotential surface is within 100% -5%

Defining an inclination angle:

the included angle between the normal line of the section of the new radiator 1 and the normal line of the section of the original radiator 1.

After the inclination angle is determined, positive and negative directions exist. However, since the heat sink 1 is generally installed at the edge of the whole flow channel space, the air flow direction and the flow channel direction of the heat sink 1 form an included angle, and the flow resistance of the flow channel is not increased after the fins are inclined, the inclined direction of the fins and the flow direction of the air near the heat sink 1 are kept consistent

The optimal inclination angle is as follows:

wherein:

θ_maxis the maximum inclination angle (unit is degree) of the fin

q is the heat productivity (unit is W) of the designed heating element

W is the maximum heat dissipation capacity (unit is W) of the design theory of the radiator 1

Note that because the shape of the radiator 1 is different, the heat source position is changeable, the protection scope of the patent should be in the reasonable maximum inclination angle can be:

specifically, the following proposes a specific optimization case for the heat sink 1:

wherein, the heating source is designed as a rectifier bridge

a₁＝51.7mm

a₂＝33.3mm

b₁＝17mm

b₂＝153mm

q＝25w

The maximum heat dissipation capacity W of the heat sink 1 is 150W

Calculating the maximum inclination angle by a formula

The optimum inclination angle is

Carrying out simulation and experimental verification: the temperature of the heat source is designed to be reduced by 6.7 ℃.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to achieve the technical effect basically.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.

While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as before, that the utility model is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (6)

1. The inclined fin type radiator is characterized in that radiating fins with the length being shorter as the radiating fins are farther away from a heat source are arranged on the radiator, two adjacent radiating fins are arranged at intervals to form an air flow channel, and the radiating fins are obliquely arranged on the radiator.

2. The oblique fin type heat sink as claimed in claim 1, wherein the oblique direction of the heat dissipating fins is aligned with the flow direction of air in the heat sink attachment.

3. The oblique fin type powder of claim 2The heat radiator is characterized in that the inclination angle of the heat radiating fins is theta, and

wherein:

a₁、a₂the shortest distance from the heat source to the left end and the right end of the radiator 1;

b₁、b₂the shortest distance from the heat source to the front and rear ends of the heat sink 1.

4. The inclined fin type heat sink according to claim 3, wherein the optimum inclination angle of the heat dissipating fins is:

wherein:

a₁、a₂the shortest distance from the heat source to the left end and the right end of the radiator;

b₁、b₂the shortest distance from the heat source to the front end and the rear end of the radiator.

5. The oblique fin type heat sink according to claim 4, wherein a surface of the heat sink corresponding to the heat dissipating fin is a rectangular surface, and θ is an angle between a normal line of the heat dissipating fin and an edge of the heat sink on one side in a thickness direction of the heat dissipating fin.

6. The inclined fin type heat sink as claimed in claim 5, wherein the optimum inclination angle of the heat dissipating fins

Wherein:

θ_maxthe maximum inclination angle of the radiating fins;

q is the heat productivity of the designed heating element;

w is the theoretical maximum heat dissipation capacity of the heat sink design.

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