CN209880587U

CN209880587U - Heat radiator

Info

Publication number: CN209880587U
Application number: CN201920734664.9U
Authority: CN
Inventors: 钱兴源; 钱列
Original assignee: Suzhou Tongxing Aluminum Industry Co Ltd
Current assignee: Suzhou Tongxing Aluminum Industry Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2019-12-31
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a radiator, it includes the base plate, fixedly connected with extension plate on the base plate, fixedly connected with linking arm on the extension plate, the linking arm is the slope form setting, fixedly connected with radiating fin on the both sides wall of linking arm, radiating fin is provided with a plurality of parallel, states radiating fin and is provided with a plurality of S-shaped sections that connect gradually along its extending direction, one side that the base plate was kept away from to the extension plate is the slope form setting. The utility model provides a base plate can be connected with power device, and the linking arm on the base plate is the slope form setting to it is bigger with the area of contact of air, on the heat transfer to the linking arm on the power device, the linking arm can carry out the heat exchange with the air, thereby can play the effect of cooling to the power device, and radiating fin can further play the effect that the heat scatters and disappears, makes the in-process heat of power device at the operation can not be too high, guarantees power device's normal operating.

Description

Heat radiator

Technical Field

The utility model relates to a technical field of radiator, in particular to radiator.

Background

With the rapid development of power electronic technology, the requirements for modularization, integration, light weight, low cost and high reliability are higher and higher, so that power devices are generally adopted in the prior art. Because most power components and parts's integrated level is higher and higher, and power density is also bigger and bigger, and the heat that produces at during operation self is also bigger and bigger, if can not in time fast with the heat dissipation that power device produced, can lead to the chip temperature rise in the power device, then cause efficiency to reduce, shorten life, then can lead to the inefficacy of power device and the fried pipe of burning out of chip to the heaviness. Therefore, solving the heat dissipation problem of the high-power device is one of the core problems which plague the packaging manufacturers and the users of the high-power device.

In order to effectively solve the heat dissipation problem of the power device, the power device is usually fixed on a substrate of a heat sink, heat is conducted to heat dissipation fins of the heat sink through the substrate, the contact area of the heat dissipation fins and air is large, and heat is dissipated to the surrounding environment through convection heat transfer by the flowing of the air.

At present, aluminum profile radiators of natural convection or forced convection are generally adopted, and comprise aluminum inserting sheet radiators, aluminum shovel sheet radiators, aluminum extruded radiators and aluminum welding fins. Because the heat conductivity coefficient of the aluminum and the aluminum alloy is within 220W/m.K, the fin efficiency of the radiating fin is low, and the heat diffusion performance is poor, the radiating fin is limited by cost and weight, the thickness of the fin is 0.8mm-2.0mm, the height of the fin is within 90mm, the length of the radiator substrate is consistent with that of the radiating fin, and power devices are uniformly distributed on the radiator substrate to reduce the substrate diffusion thermal resistance and improve the radiating capacity of the radiator. Therefore, the heat sink is bulky and heavy. With the improvement of the performance of the high-power device, the increase of the heat flux density of a single device, and the improvement of the requirements of small volume and light weight, the conventional aluminum heat radiator can not meet the heat radiation requirement of the high-heat-flux high-power module.

However, when the heat sink is used for heat dissipation of a power device, due to poor heat dissipation effect, when the power device is overloaded or fluctuated for a short time to generate a large amount of instantaneous heat, the heat cannot be dissipated in time, so that the temperatures of the heat sink and the power device are increased at a high speed, and the performance of the power device is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a radiator, it has the advantage that the radiating effect is good, can prevent that the higher condition from appearing in radiator and power device's temperature, avoids influencing power device's performance.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a radiator, includes the base plate, fixedly connected with extension plate on the base plate, fixedly connected with linking arm on the extension plate, the linking arm is the slope form setting, fixedly connected with radiating fin on the both sides wall of linking arm, radiating fin is provided with a plurality of parallel.

Through adopting above-mentioned technical scheme, the base plate can be connected with power device, and the linking arm on the base plate is the slope form setting to it is bigger with the area of contact of air, on the heat transfer to the linking arm on the power device, the linking arm can carry out the heat exchange with the air, thereby can play the effect of cooling to power device, and radiating fin can further play the effect that the heat scatters and disappears, makes power device can not be too high at the in-process heat of operation, guarantees power device's normal operating.

The utility model discloses further set up to: the radiating fins are provided with a plurality of S-shaped sections which are connected in sequence along the extending direction of the radiating fins.

Through adopting above-mentioned technical scheme, the area of contact of setting up of S-shaped section can increase with the air to the heat exchange capacity of whole radiator and air is better, can be quick distribute away the heat on the power device, can make the more quick replacement of the heat that produces go out on the power device.

The utility model discloses further set up to: one side of the extension plate, which is far away from the substrate, is arranged in an inclined shape.

Through adopting above-mentioned technical scheme, the area of contact with the air can be increased in the setting of slope form to heat replacement on the power device that can be quick goes out, prevents that power device's heat is too high.

The utility model discloses further set up to: the connecting arms and the radiating fins are gradually reduced in thickness along the extension direction of the connecting arms and the radiating fins.

Through adopting above-mentioned technical scheme, linking arm and radiating fin's thickness thins gradually to can distribute away the heat faster, prevent power device's heat too high, guarantee power device's normal use.

The utility model discloses further set up to: the connection part of the extension plate and the substrate is provided with a through hole.

Through adopting above-mentioned technical scheme, the setting up of through-hole can make extension board and base plate and air contact to can be quick go out the heat replacement in the power device, prevent that the heat of power device is higher.

The utility model discloses further set up to: the side wall of the connecting arm is provided with an arc groove, and the arc groove is arranged between the adjacent radiating fins.

Through adopting above-mentioned technical scheme, the setting of arc groove can make the quick replacement of the heat of linking arm go out, prevents that power device's temperature is higher, guarantees its operation that can normally.

The utility model discloses further set up to: the extension plate, the connecting arm, the radiating fin and the through hole are arranged in a line symmetry mode according to the center line of the width direction of the base plate.

Through adopting above-mentioned technical scheme, the setting of symmetry can make extension board, linking arm, radiating fin and through-hole can have bigger area and air to contact, can be faster replace away the heat to can contain the normal operating of intelligent power device.

The utility model discloses further set up to: the base plate, the extension plate, the connecting arm and the radiating fins are all of an integrally formed structure.

Through adopting above-mentioned technical scheme, the setting of integrated into one piece structure can make whole radiator produce through the pouring to can make production more convenient fast.

To sum up, the utility model discloses a beneficial technological effect does:

1. the connecting arms on the base plate are arranged in an inclined manner, so that the contact area of the connecting arms with air is larger, heat on the power device is transferred to the connecting arms, the connecting arms can exchange heat with the air, the power device can be cooled, the radiating fins can further play a role in heat dissipation, the heat of the power device cannot be too high in the operation process, and the normal operation of the power device is ensured;

2. the S-shaped section can increase the contact area with air, so that the heat exchange capacity of the whole radiator and the air is better, heat on the power device can be quickly radiated, and the heat generated on the power device can be quickly replaced;

3. the thicknesses of the connecting arms and the radiating fins are gradually reduced, so that heat can be radiated more quickly, the overhigh heat of the power device is prevented, and the normal use of the power device is ensured;

4. the arrangement of the arc groove can enable heat of the connecting arm to be quickly replaced, so that the temperature of the power device is prevented from being high, and normal operation of the power device is guaranteed.

Drawings

Fig. 1 is a schematic plan view of a structure for embodying a heat sink.

In the figure, 1, a substrate; 2. an extension plate; 3. a connecting arm; 4. a heat dissipating fin; 5. a through hole; 6. an arc groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): the utility model provides a radiator, as shown in fig. 1, includes base plate 1, fixedly connected with extension board 2 on the base plate 1, and one side that base plate 1 was kept away from to extension board 2 sets up for the slope form, and fixedly connected with linking arm 3 on the extension board 2, linking arm 3 are the setting of slope form, and the setting of slope form can increase the area of contact with the air to can be abundant in the time of power device operation contact the heat transfer with the air, with the air replacement in the power device away.

As shown in fig. 1, fixedly connected with radiating fin 4 on the both sides wall of linking arm 3, radiating fin 4 is provided with a plurality of parallel, and radiating fin 4 is provided with a plurality of S-shaped sections that connect gradually along its extending direction, and the area of contact of S-shaped section setting can increase with the air to the heat exchange capacity of whole radiator and air is better, and the heat with on the power device that can be quick distributes away, can make the more quick replacement of the heat that produces on the power device go out.

As shown in fig. 1, the connecting arms 3 and the heat dissipating fins 4 are gradually reduced in thickness along the extending direction thereof, and the connecting arms 3 and the heat dissipating fins 4 are gradually reduced in thickness, so that heat can be dissipated more quickly.

As shown in fig. 1, through-hole 5 has been seted up with the junction of base plate 1 to extension board 2, and arc groove 6 has been seted up to the lateral wall of linking arm 3, and arc groove 6 sets up between adjacent radiating fin 4, and through-hole 5 can make extension board 2 and base plate 1 contact with the air with setting up of arc groove 6 to can be quick replace away the heat in the power device, and can give off the heat fast, make the more quick the giving off of heat.

As shown in fig. 1, the extension plate 2, the connecting arm 3, the heat dissipating fin 4 and the through hole 5 are disposed in a line symmetry manner according to a central axis of the base plate 1 in the width direction, and the base plate 1, the extension plate 2, the connecting arm 3 and the heat dissipating fin 4 are all of an integrally formed structure.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A heat sink comprising a substrate (1), characterized in that: fixedly connected with extension board (2) on base plate (1), fixedly connected with linking arm (3) on extension board (2), linking arm (3) are the slope form and set up, fixedly connected with radiating fin (4) on the both sides wall of linking arm (3), radiating fin (4) are provided with a plurality of parallel.

2. A heat sink according to claim 1, wherein: and a plurality of S-shaped sections which are connected in sequence are arranged on the radiating fins (4) along the extending direction of the radiating fins.

3. A heat sink according to claim 1, wherein: one side of the extension plate (2) far away from the substrate (1) is arranged in an inclined shape.

4. A heat sink according to claim 1, wherein: the connecting arms (3) and the radiating fins (4) are gradually reduced in thickness along the extending direction of the connecting arms.

5. A heat sink according to claim 1, wherein: the connection part of the extension plate (2) and the substrate (1) is provided with a through hole (5).

6. A heat sink according to claim 3, wherein: the side wall of the connecting arm (3) is provided with an arc groove (6), and the arc groove (6) is arranged between the adjacent radiating fins (4).

7. A heat sink according to claim 5, wherein: the extension plate (2), the connecting arm (3), the radiating fin (4) and the through hole (5) are arranged in a line symmetry mode according to the center line of the base plate (1) in the width direction.

8. A heat sink according to claim 1, wherein: the base plate (1), the extension plate (2), the connecting arm (3) and the radiating fin (4) are all of an integrally formed structure.