CN217694115U - Heat radiator - Google Patents

Abstract

The utility model discloses a radiator, including: the radiator comprises a radiator body, a heat dissipation channel and an air inlet part, wherein the heat dissipation channel is formed in the radiator body; the air outlet part is arranged opposite to the air inlet and is communicated with the heat dissipation channel; the plugging component is arranged on the radiator body and is matched with the radiator body to enclose an airflow air channel which is enclosed on the periphery of the radiating channel; and the air guide part is in butt joint fit with the radiator body and is used for guiding airflow to the inside of the heat dissipation channel. Through the utility model provides an among the prior art radiator and low-speed air heat exchange take away the lower problem of radiator radiating efficiency that the heat leads to less.

Description

Heat radiator

Technical Field

The utility model belongs to the technical field of the radiating equipment, concretely relates to an improvement that is used for radiator structure on small-size power ware frame.

Background

The problem of difficult heat dissipation of small-sized power devices used by products such as household appliances, electronic products, communication equipment, office equipment and the like generally exists at present, and the performance of the equipment is directly influenced by the quality of the heat dissipation performance of the small-sized power devices. The method generally adopted at present is that an aluminum alloy radiating fin is added on a small power device, heat is radiated by means of convective heat transfer of aluminum alloy and air, and when flowing air flows through a radiator, the radiator can only take away heat by means of air with low flow speed. Because the radiating effect of radiator receives the influence of flowing through its surperficial air velocity, when the air velocity of flowing through the heat exchanger surface is great, can take away a large amount of heats on radiator surface, the radiating effect can be comparatively good, otherwise, when the air velocity of flowing through the radiator surface is lower, can reduce the radiating efficiency of radiator.

SUMMERY OF THE UTILITY MODEL

The utility model discloses take away the lower problem of radiator radiating efficiency that the heat leads to less with the low-speed air heat exchange among the prior art radiator, the utility model provides a novel radiator structure, it is through improving the radiator structure, can be used to increase the air flow rate on stream through the radiator surface, and then can effectively improve the utilization ratio of radiator to flowing air, improve the radiating effect.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a heat sink, comprising:

a radiator body, a heat radiation channel is formed in the radiator body,

the air inlet part is communicated with the heat dissipation channel;

the air outlet part is arranged opposite to the air inlet and is communicated with the heat dissipation channel;

the plugging component is arranged on the radiator body and is matched with the radiator body to form an airflow channel which is enclosed on the periphery of the radiating channel;

and the air guide part is in butt joint fit with the radiator body and is used for guiding airflow to the inside of the heat dissipation channel.

In some embodiments of this application, the radiator body is including polylith fin, polylith the fin is arranged side by side, is formed with heat dissipation channel between adjacent fin, air-out portion is including forming the air outlet at a plurality of heat dissipation channel tip.

In some embodiments of the present application, the plurality of fins are arranged in parallel with each other, and the spacing between adjacent fins is the same.

In some embodiments of the present application, the plurality of fins are all arranged in an inclined manner, and the width of the heat dissipation channel formed between adjacent fins is gradually reduced along the direction from the air inlet portion to the air outlet portion.

In some embodiments of the present application, the angle between adjacent fins is the same or gradually increases from the central region of the plurality of fins to both side regions near both sides.

In some embodiments of the present application, a plurality of the heat dissipation fins are arranged in a vertical arrangement, and the blocking component includes: the first plugging component is partially plugged at the top of the heat dissipation channel formed by the plurality of radiating fins along the length direction of the radiating fins and is connected with the tops of the plurality of radiating fins;

and the second blocking component is arranged in parallel to the first blocking component, at least partially blocks the bottoms of the plurality of heat dissipation channels, and is connected with the bottoms of the plurality of radiating fins.

In some embodiments of the present application, the first blocking member extends along a direction from the air inlet portion to the air outlet portion, and the length of the first blocking member is 2/3 of the length of the heat dissipation fin.

In some embodiments of the present application, a plurality of the heat dissipation fins are arranged in a vertical arrangement, and the blocking component includes:

the first blocking component is blocked at the top of the heat dissipation channel formed by the plurality of heat dissipation fins along the length direction of the heat dissipation fins and is mutually connected with the top of the plurality of heat dissipation fins;

and the second blocking part is arranged in parallel with the first blocking part, at least partially blocks the bottoms of the plurality of heat dissipation channels along the length direction of the heat dissipation fins, and is connected with the bottoms of the plurality of heat dissipation fins.

In some embodiments of the present application, the heat sink includes a heat sink body and at least one protrusion formed on one side of the heat sink body, the protrusion extends along a length direction of the heat sink body, and a recess formed between adjacent protrusions is formed along the length direction of the heat exchanger body.

In some embodiments of the present application, the wind guide member includes: and the air duct is communicated with an air duct formed by enclosing the plugging part and the radiating fins on two sides, and the inner diameter value of the air duct is gradually reduced along the flowing direction of the air flow.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the radiator in the utility model is provided with the air guide component when the structure is set, and a large amount of air flow can be quickly guided into the heat dissipation channel by the air guide function of the air guide component;

in addition, in the embodiment, the plugging component is correspondingly arranged during the arrangement, and the plugging component is connected with the radiator body in a matching manner to form an airflow air channel enclosing the heat dissipation channel inside, so that the airflow guided into the heat dissipation channel through the air guide component can hardly shunt and leak outwards, but almost flows through the internal heat dissipation channel and contacts with the radiator body to take away heat on the radiator body as much as possible, and the heat dissipation effect of the whole radiator is further improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structural diagram of an embodiment of a heat sink according to the present invention;

fig. 2 is a schematic overall structure diagram ii of an embodiment of a heat sink according to the present invention;

fig. 3 is a schematic structural view of an air inlet portion of an embodiment of a heat sink in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a heat dissipation channel of an embodiment of a heat sink in an embodiment of the present invention;

fig. 5 is a first schematic overall structure diagram of another embodiment of the heat sink in the embodiment of the present invention;

fig. 6 is a schematic overall structural diagram of another embodiment of the heat sink in the embodiment of the present invention;

fig. 7 is a schematic overall structural diagram of a third embodiment of a heat sink in an embodiment of the present invention;

fig. 8 is a schematic structural view of an air inlet portion of another embodiment of the heat sink in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an embodiment of a heat sink fin according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a heat sink in an embodiment of the present invention.

Wherein, the radiator body-100;

a heat dissipation channel-110;

an air inlet part-120;

an air outlet part-130;

-140, a heat sink;

a heat sink body-141;

a boss-142;

a recess-143;

a plugging member-200;

a first blocking member-210;

a second closure member-220;

a wind guide component-300.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

the utility model provides an embodiment of radiator, radiator in this embodiment mainly are used for dispelling the heat to small-size power part, when using, through setting up the radiator or laminating on small-size power device's surface to reach and take away the heat on the small-size power device, come the purpose of dispelling the heat to small-size power device.

When the radiator is used for radiating, the surface heat of the radiator is taken away by mainly contacting with the airflow flowing through the surface of the radiator to play a role in radiating, and when the radiator is used for radiating, if the flow rate of the airflow flowing through the surface of the radiator is large, the radiating effect of the radiator is good.

When the radiator structure in this embodiment is arranged, it mainly includes:

a heat sink body 100 in which a heat dissipation channel 110 is formed in the heat sink body 100;

when the airflow passes through the heat dissipation channel 110, the airflow contacts the inner wall of the heat dissipation channel 110 to exchange heat with the heat dissipation body 100, so as to take away heat on the heat dissipation body 100, thereby achieving a heat dissipation effect.

In some embodiments of the present disclosure, the heat sink body 100 is made of a metal material with good heat absorption and heat exchange performance, such as aluminum.

When the composite material is formed, the composite material can be directly formed at one time through extrusion, so that the forming is convenient, and the production and processing cost is effectively reduced.

And an air inlet part 120 communicated with the heat dissipation channel 110, wherein air flow can flow into the heat dissipation channel 110 through the air inlet part 120 for heat exchange.

An air outlet portion 130 opposite to the inlet air and communicated with the heat dissipation channel 110;

in some embodiments of the present application, the air inlet portion 120 and the air outlet portion 130 are respectively disposed at two opposite ends of the heat dissipation channel 110, and the airflow enters from the air inlet portion 120, flows through the heat dissipation channel 110, and then flows out from the air outlet portion 130.

The blocking component 200 is arranged on the radiator body 100 and is matched with the radiator body 100 to form an airflow channel which is enclosed around the heat dissipation channel 110;

the blocking component 200 is connected with the radiator body 100 to correspondingly form an airflow duct, and the airflow duct can be used for blocking almost all airflow flowing through the heat dissipation channel 110, so that the airflow introduced from the air inlet part 120 can not be leaked, heat exchange is carried out between the airflow flowing through the heat dissipation channel 110 and the radiator body 100 as much as possible, and the heat dissipation efficiency is improved.

The air guiding component 300 is in butt joint with the radiator body 100 and is used for guiding air flow into the radiating channel 110, and the air guiding component 300 is mainly used for guiding a large amount of external air flow to the air outlet portion 130 so as to enter the radiating channel 110, so that the flow rate of the air flow entering the radiating channel 110 is accelerated.

When the heat sink in this embodiment is used, the heat sink may be used in cooperation with a fan, and the fan blows air flow, which is guided into the heat sink by the guiding component, or natural wind is guided and guided into the heat dissipation channel 110 inside the heat sink body 100 by the guiding function of the guiding component to dissipate heat.

In the radiator in the embodiment, when the structure is arranged, the air guide part 300 is arranged, a large amount of air flow can be quickly guided into the heat dissipation channel 110 through the air guide effect of the air guide part 300, and a large amount of air flow can be intensively guided into the heat dissipation channel 110 through the guide effect of the air guide part 300, so that the flow velocity of the air flow flowing through the heat dissipation channel 110 in the radiator body 100 is increased, the heat exchange between the air flow and the radiator body 100 is accelerated, and the heat exchange efficiency is improved;

in addition, in the present embodiment, the blocking component 200 is further correspondingly arranged during the installation, and the blocking component 200 and the heat sink body 100 are cooperatively connected to form an airflow duct enclosing the heat dissipation channel 110 inside, so that the airflow guided into the heat dissipation channel 110 through the air guiding component 300 hardly shunts and leaks outwards, but almost flows through the heat dissipation channel 110 inside and contacts with the heat sink body 100 to take away heat on the heat sink body 100 as much as possible, thereby further improving the heat dissipation effect of the whole heat sink.

In some embodiments of the present application, the heat sink body 100 includes a plurality of heat dissipation fins 140, the plurality of heat dissipation fins 140 are arranged side by side, the heat dissipation channels 110 are formed between adjacent heat dissipation fins 140, and the air outlet portion 130 includes air outlets formed at ends of the plurality of heat dissipation channels 110.

The heat dissipation channels 110 are formed between any adjacent heat dissipation fins 140, a plurality of heat dissipation channels 110 are correspondingly formed between the plurality of heat dissipation fins 140, and the plurality of heat dissipation channels 110 are arranged in parallel.

An air outlet and an air inlet are correspondingly formed on each heat dissipation channel 110, and a plurality of air outlets and air inlets are correspondingly arranged on the plurality of heat dissipation channels 110.

The air inlet portion 120 is formed by a plurality of air inlets, and the air outlet portion 130 is formed by a plurality of air outlets.

When the air current enters, the air current respectively flows through the plurality of heat dissipation channels 110 from the plurality of air inlets arranged in parallel, so as to contact with the surfaces of the heat dissipation fins 140 forming the heat dissipation channels 110 to take away the heat on the heat dissipation fins 140, and the air current flowing through the heat dissipation channels 110 is finally discharged outwards from the air outlets on the heat dissipation channels 110.

In some embodiments of the present application, the plurality of fins 140 are arranged in parallel with each other, and the distance between adjacent fins 140 is the same.

When the heat dissipation fins 140 are arranged, the heat dissipation fins 140 are vertically arranged in a vertical horizontal plane, and are parallel to each other, and the plurality of heat dissipation channels 110 formed between the plurality of heat dissipation fins 140 are also parallel to each other and have the same distance, so that the air flow can be ensured to flow uniformly and in parallel between the heat dissipation channels 110, and the air flow directions of the plurality of heat dissipation channels 110 are the same.

In other embodiments of the present application, the plurality of fins 140 are parallel to each other, the distance between adjacent fins 140 is different, and the airflow flows between the heat dissipation channels 110 with different distances to contact with the heat sink body 100 for heat dissipation.

In some embodiments of the present application, the plurality of fins 140 are disposed in an inclined manner, and the width of the heat dissipation channel 110 formed between adjacent fins 140 decreases gradually along the direction from the air inlet portion 120 to the air outlet portion 130.

That is, the plurality of fins 140 form a fan-shaped heat sink structure that continuously diverges outward from the center to both sides.

The fan-shaped radiator corresponds to a fan-shaped center, the air inlet of the radiator is formed at a position far away from the fan-shaped center, and the air outlet is correspondingly formed at a position close to the fan-shaped center.

Because the heat dissipation channel 110 is wider at the position closer to the air inlet part 120, the heat dissipation channel 110 is narrower at the position closer to the air outlet part 130, and the width of the heat dissipation channel 110 is gradually changed from the air inlet part 120 to the air outlet part 130, the structural arrangement mode can force the air flowing through the air inlet of the radiator to be completely converged at the center of the fan shape corresponding to the radiator, and the air flow rate after the air enters the radiator is improved.

The fan-shaped radiator structure formed by the radiating fins 140 which are arranged in an inclined mode can also play a good role in guiding air flow through the inclined radiating fins 140, flowing air can be guided more quickly to enter the radiator and flow in the radiator, and the flow speed of the air is improved.

In some embodiments of the present application, the angle between adjacent fins 140 is the same or gradually increases from the central region of the plurality of fins 140 to the two side regions near the two sides.

When the arrangement is performed, the included angle between two adjacent heat dissipation fins 140 may be the same, that is, the included angle between two adjacent heat dissipation fins 140 is 30 to 45 degrees, so that the plurality of heat dissipation fins 140 are uniformly distributed.

In other embodiments, the heat sink is arranged such that the included angle between the plurality of heat dissipation fins 140 is different, and the included angle between the heat dissipation fins 140 near the middle area is smaller than the included angle between the adjacent heat dissipation fins 140 near the both side areas.

When the air current enters, the air current mainly enters from the central position, and the middle area is set to be in a mode that the angle of the radiating fins 140 is smaller, so that the entering air current is contacted with the radiator as much as possible to exchange heat, the heat above the air current is taken away, and the radiating effect is improved.

If the flow direction of the air flow mainly enters from one side, the included angle between the heat dissipation fins 140 at the side edges may be set larger than the included angle between the adjacent heat dissipation fins 140 at the middle position.

In some embodiments of the present application, the plurality of cooling fins 140 are arranged in a vertical arrangement, and the blocking component 200 includes: a first blocking member 210 partially blocking the tops of the heat dissipation channels 110 formed by the plurality of heat dissipation fins 140 in the longitudinal direction of the heat dissipation fins 140 and connected to the tops of the plurality of heat dissipation fins 140;

and a second blocking member 220, which is disposed parallel to the first blocking member 210, at least partially blocks the bottoms of the plurality of heat dissipation channels 110, and is connected to the bottoms of the plurality of heat dissipation fins 140.

The first blocking member 210 is a first blocking plate, is arranged along the length direction of the heat dissipation fins 140, and is disposed perpendicular to the plurality of heat dissipation fins 140. The heat dissipation plate is used for shielding the opening positions of the tops of the plurality of heat dissipation channels 110 formed by the plurality of heat dissipation fins 140, so as to seal the top positions of the plurality of heat dissipation channels 110.

At the time of connection, the bottom surfaces of the first blocking plates are connected at the positions of the top surfaces of the plurality of heat radiating fins 140, respectively.

The second blocking member 220 is a second blocking plate which covers the bottom position of the heat dissipation channel 110 formed by the plurality of heat dissipation fins 140 in the length direction of the heat dissipation fins 140, and which is also arranged perpendicular to the plurality of heat dissipation fins 140.

When connected, it is fixed in connection with the bottom of the plurality of heat sinks 140.

The airflow duct is formed by the first blocking member 210, the second blocking member 220, and the heat dissipation fins 140 on both sides.

In some embodiments of the present application, the first blocking member 210 extends along a direction from the air inlet portion 120 to the air outlet portion 130, and has a length 2/3 of the length of the heat dissipation fin 140.

That is, when the first blocking member 210 is disposed so as to have a length smaller than that of the heat dissipation fin 140, it is capable of blocking at least a front portion of the heat dissipation channel 110 near the air inlet portion 120.

The mode that the first heat dissipation part partially seals the opening at the top of the heat dissipation channel 110 at the position close to the air inlet part 120 can ensure that most of the air flow entering the heat dissipation channel 110 cannot flow outwards, so that the heat dissipation effect is improved;

although the heat dissipation channel 110 is not completely sealed by the first sealing member 210, the temperature of the air flowing to the region of the air outlet portion 130 is relatively high because the air flowing through the sealing portion of the front region close to the air outlet portion 130 has already exchanged a large amount of heat with the heat sink body 100, and even if the air flowing through the heat sink body 100 of the rear region does not have a good heat dissipation effect, therefore, when the heat dissipation channel 110 is disposed, the heat dissipation channel 110 close to the region of the rear air outlet portion 130 is not directly sealed, so that the air flowing with a high temperature can flow out from the opening at the top portion to dissipate heat.

In some embodiments of the present application, a plurality of the heat dissipation fins 140 are arranged in a vertical arrangement, and the blocking member 200 includes:

a first blocking member 210 blocking the tops of the heat dissipation channels 110 formed by the plurality of heat dissipation fins 140 in the longitudinal direction of the heat dissipation fins 140 and connected to the tops of the plurality of heat dissipation fins 140;

and a second blocking member 220, which is disposed parallel to the first blocking member 210, at least partially blocks the bottoms of the plurality of heat dissipation channels 110 along the length direction of the heat dissipation fins 140, and is connected to the bottoms of the plurality of heat dissipation fins 140.

The first blocking part 210 is a first blocking plate, the second blocking part 220 is a second blocking plate, the first blocking plate is a top opening which is completely blocked among the plurality of heat dissipation channels 110, the plurality of second blocking parts 220 are openings which are completely blocked at the bottoms of the plurality of heat dissipation channels 110, a closed airflow duct is formed by the first blocking part 210, the second blocking part 220 and the heat dissipation fins 140 at two sides in a surrounding mode, the airflow duct formed by the four parts is closed, thus airflow entering the heat dissipation channels 110 can be ensured not to flow outwards, the airflow can flow through a radiator as much as possible, and the heat dissipation efficiency is improved.

In some embodiments of the present application, the first blocking member 210 is configured to extend along a direction from the air inlet portion 120 to the air outlet portion 130, and has a length smaller than that of the heat sink 140, so as to partially block the openings at the tops of the plurality of heat dissipation channels 110, and the second blocking member 220 is configured to also extend along a direction from the air inlet portion 120 to the air outlet portion 130, and has a length smaller than that of the heat sink 140, so as to partially block the openings at the bottoms of the plurality of heat dissipation channels 110.

In some embodiments of the present application, the heat sink 140 includes a heat sink body 141 and protrusions 142 formed on at least one side of the heat sink body 141, the protrusions 142 extending along a length direction of the heat exchanger body, and a recess 143 formed between adjacent protrusions 142 and extending along the length direction of the heat exchanger body.

The contact area between the air flow passing through the heat dissipation channel 110 and the heat sink can be increased by providing the protrusion 142 arranged on the heat sink body 141 along the length direction thereof, and the heat dissipation efficiency can be improved.

The protrusion 142 may be an arc protrusion, a rectangular protrusion, or the like, and is not limited in particular.

In some embodiments of the present application, the wind guide member 300 includes: and the air duct is communicated with an air duct formed by enclosing the blocking part 200 and the radiating fins 140 on two sides, and the inner diameter value of the air duct is gradually reduced along the flowing direction of the air flow.

In some embodiments of the present application, the air duct includes a first air guiding plate 310, a second air guiding plate 320, a third air guiding plate 330, and a fourth air guiding plate 340,4, which are arranged in an inclined manner, and are adjacently disposed and connected, and end portions of the air guiding plates are respectively connected with the heat dissipation fins 140 on two sides, the first plugging member 210, and the second plugging member 220 in a butt joint manner, so as to achieve an air flow guiding effect.

In other embodiments of the present application, the air duct is a trumpet-shaped air duct formed by bending a plate, and the inner diameter of the trumpet-shaped air duct gradually decreases along the direction from the air inlet to the air outlet.

In another embodiment of the present application, the air guiding duct includes a plurality of semi-arc plates connected in sequence.

In some embodiments of the present application, a plurality of air ducts are disposed along the width of the heat sink body 100, and are sequentially arranged in parallel at the air inlet portion 120, adjacent air ducts are sequentially connected, and the air ducts at two sides are connected with the heat dissipation fins 140.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed in the appended claims.

Claims (10)

1. A heat sink, comprising:

the radiator comprises a radiator body, wherein a radiating channel is formed in the radiator body;

the air inlet part is communicated with the heat dissipation channel;

the air outlet part is arranged opposite to the air inlet part and is communicated with the heat dissipation channel;

the plugging component is arranged on the radiator body and is matched with the radiator body to enclose an airflow air channel which is enclosed on the periphery of the radiating channel;

and the air guide part is in butt joint fit with the radiator body and is used for guiding airflow to the inside of the heat dissipation channel.

2. The heat sink as claimed in claim 1, wherein the heat sink body comprises a plurality of fins, the fins are arranged side by side, heat dissipation channels are formed between adjacent fins, the air inlet portion comprises air inlets formed at ends of the heat dissipation channels, and the air outlet portion comprises air outlets formed at ends of the heat dissipation channels.

3. The heat sink of claim 2, wherein the plurality of fins are arranged in parallel with each other, and the spacing between adjacent fins is the same.

4. The heat sink as claimed in claim 2, wherein the plurality of fins are arranged in an inclined manner, and the width of the heat dissipation channel formed between adjacent fins is gradually reduced along the direction from the air inlet portion to the air outlet portion.

5. The heat sink as claimed in claim 4, wherein the angle between the adjacent fins is the same or gradually increased from the central region of the plurality of fins to the side regions near both sides.

6. The heat sink as claimed in any one of claims 2 to 5, wherein a plurality of the fins are arranged in a vertical arrangement, and the blocking member comprises: the first plugging component is partially plugged at the top of the heat dissipation channel formed by the plurality of radiating fins along the length direction of the radiating fins and is connected with the tops of the plurality of radiating fins;

and the second plugging part is arranged in parallel to the first plugging part, at least partially plugs the bottoms of the plurality of heat dissipation channels, and is connected with the bottoms of the plurality of radiating fins.

7. The heat sink as claimed in claim 6, wherein the first blocking member extends in a direction from the air inlet portion to the air outlet portion, and has a length of 2/3 of the length of the heat dissipating fin.

8. The heat sink as claimed in any one of claims 2 to 5, wherein a plurality of the fins are arranged in a vertical arrangement, and the blocking member comprises:

the first plugging component is plugged at the top of the heat dissipation channel formed by the plurality of heat dissipation fins along the length direction of the heat dissipation fins and is mutually connected with the top of the plurality of heat dissipation fins;

and the second blocking part is arranged in parallel with the first blocking part, at least partially blocks the bottoms of the plurality of radiating channels along the length direction of the radiating fins, and is connected with the bottoms of the plurality of radiating fins.

9. The heat sink as claimed in claim 2, wherein the heat sink includes a heat sink body and protrusions formed on at least one side of the heat sink body, the protrusions extending along a length direction of the heat sink body, and recesses formed between adjacent protrusions along a length direction of the heat exchanger body.

10. The heat sink of claim 1, wherein the air-guiding component comprises: and the air duct is communicated with an air duct formed by enclosing the plugging part and the radiating fins on the two sides, and the inner diameter value of the air duct is gradually reduced along the flowing direction of the air flow.

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