CN113115568A

CN113115568A - Heat radiation module

Info

Publication number: CN113115568A
Application number: CN202110373737.8A
Authority: CN
Inventors: 林源憶; 张富贵
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-07-13

Abstract

The invention provides a heat dissipation module, which comprises a base, at least two heat pipes and a plurality of heat dissipation units, wherein the at least two heat pipes are provided with a heat absorption end and a heat dissipation end extending outwards from the heat absorption end, the heat absorption end is arranged on the base, the heat dissipation ends of the at least two heat pipes are positioned above the base and are arranged in a high-low staggered manner, and the plurality of heat dissipation units are combined to the heat dissipation ends of the heat pipes and are arranged at intervals.

Description

Heat radiation module

Technical Field

The present invention relates to a heat dissipation module, and more particularly, to a heat dissipation module capable of preventing airflow from being blocked and increasing heat dissipation area to effectively improve heat dissipation efficiency.

Background

Many electronic devices (e.g., computers) are increasing in performance, so that the electronic components in the electronic devices generate high heat, and heat must be dissipated through a heat sink to lower the temperature, so as to maintain the working efficiency and reduce the chance of damaging the electronic components. The present general heat sink is composed of extruded aluminum fins or buckled stacked fins, but the spacing distance and height between each fin of the heat sink are fixed, so that the air flow passing through the top, bottom and space of each fin is limited to be the same and the length of the air flow passing through the fin is also the same, therefore, when the heat sink is attached to a heat source (such as a central processing unit or a graphic processing chip) to lead out heat energy, and the heat sink is used to dissipate the heat energy outwards, the air flow blowing to the top and bottom of the fin is limited to be the same, and further the heat energy is taken away relatively limited, so that the problem of heat accumulation is easily caused.

However, as the wattage and performance of the electronic component are improved, the number of the heat dissipation fins of the conventional heat sink must be increased and the heat dissipation fins must be increased, but if the heat sink that can be placed in the limited space of the electronic device is in the same area, and more heat dissipation areas are required, the number of the heat dissipation fins must be increased, for example, although many heat dissipation fins are increased in the area of 10 cm × 10 cm, the distance between adjacent heat dissipation fins (airflow channel) will be narrower as the number of the fins is larger (i.e., the distance between two adjacent heat dissipation fins will be reduced), so that the resistance (flow field resistance) to the airflow flowing through the heat dissipation fins is larger, and the amount of air entering the space between the heat dissipation fins is greatly reduced, thereby the heat dissipation efficiency is not good. If the heat dissipation fins are increased and elongated, the heat dissipation fins are easily deformed or damaged due to the thin thickness of each heat dissipation fin, and if the thickness of each heat dissipation fin is increased, the number of the heat dissipation fins is reduced, thereby reducing the heat dissipation area.

Therefore, how to increase the heat dissipation area of the heat sink in the limited space by using the space above the heat sink is the same as the heat sink in the limited space, so that the practitioner thinks that two independent heat sinks are combined in a manner of directly stacking or overlapping two layers to obtain more heat dissipation areas, but extends another problem, namely, one heat sink is directly pressed against the position of the other heat sink where the heat dissipation fins are arranged, and the stacked upper heat sink has a considerable weight, so that the heat dissipation fins arranged on the lower heat sink cannot bear the weight of the stacked upper heat sink and are deformed (or damaged) to cause poor heat dissipation efficiency, and therefore the problem of structural strength of the heat dissipation fins is still unsolved, and the practitioner still needs to overcome the problem.

Therefore, how to solve the above-mentioned problems and disadvantages is a direction in which the inventors of the present invention and related manufacturers engaged in the industry need to research and improve.

Disclosure of Invention

An object of the present invention is to provide a heat dissipation module capable of increasing a heat dissipation area and preventing air flow from being blocked to effectively improve heat dissipation efficiency.

To achieve the above object, the present invention provides a heat dissipation module, comprising:

a base;

the heat pipe comprises at least two heat pipes and a heat pipe, wherein the heat pipe is provided with a heat absorbing end and a heat radiating end extending outwards from the heat absorbing end, the heat absorbing end is arranged on the base, and the heat radiating ends of the at least two heat pipes are positioned above the base and are arranged in a high-low staggered manner; and

the heat dissipation units are combined at the heat dissipation ends of the at least two heat pipes and are arranged at intervals.

The heat dissipation module, wherein: the base is provided with a top side and a bottom side, the bottom side of the base is provided with a plurality of grooves, the grooves can accommodate and combine the heat absorbing ends of the at least two heat pipes, and the heat absorbing ends of the at least two heat pipes are flush with the bottom surface of the base.

The heat dissipation module, wherein: an upper side of the heat absorbing end of the at least two heat pipes is contacted and attached to the bottom side of the base, and a lower side of at least one of the heat absorbing end of the at least two heat pipes is attached to a heating element.

The heat dissipation module, wherein: each heat dissipation unit is provided with a plurality of heat dissipation fins, an air flow channel is defined between every two heat dissipation fins, and the air flow channels of the plurality of heat dissipation fins on the heat dissipation ends of the at least two heat pipes are the same or different.

The heat dissipation module, wherein: the base is a temperature equalizing plate, a hot plate, a heat conducting block or a radiator.

The heat dissipation module, wherein: the width of the airflow channel of the plurality of radiating fins on the radiating end of at least one heat pipe is larger than, equal to or smaller than the width of the airflow channel of the plurality of radiating fins on the radiating end of another heat pipe.

The heat dissipation module is characterized by further comprising at least one fan, wherein the fan is selectively arranged on one side of the base or one side or the middle of the plurality of heat dissipation fins and used for guiding airflow to the plurality of heat dissipation fins for heat exchange.

The heat dissipation module, wherein: the heat dissipation ends of the at least two heat pipes are positioned above the base and are staggered in the front and back directions.

A heat dissipation module, comprising:

a base having a top surface and a bottom surface, the top surface having a plurality of base fins;

at least one heat pipe, which is provided with a heat absorbing end and a heat dissipating end extending outwards from the heat absorbing end, wherein the heat absorbing end is arranged on the base, and the base and the heat dissipating end positioned above the base are arranged in a high and low way; and

at least one heat dissipation unit combined on the heat dissipation end and having a distance with the plurality of base fins.

The heat dissipation module, wherein: the heat dissipation unit comprises a plurality of heat dissipation fins and a two-phase flow heat dissipation structure, one side of the plurality of heat dissipation fins is attached to one upper side of the two-phase flow heat dissipation structure, and the heat dissipation end of the heat pipe is in contact with one lower side of the two-phase flow heat dissipation structure or is directly communicated with a cavity of the two-phase flow heat dissipation structure.

The heat dissipation module, wherein: the two-phase flow heat dissipation structure is a temperature equalization plate or a hot plate.

Therefore, the arrangement positions of the plurality of heat dissipation fins or the plurality of heat dissipation fins and the plurality of base fins at high, low, front and back are adjusted by the layered and/or staggered interval arrangement design, so that the heat dissipation area is increased, the air flow is prevented from being blocked, and the heat dissipation efficiency is effectively improved.

Drawings

Fig. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 3A is a schematic view of an embodiment of a heat dissipation module and a fan according to the present invention.

Fig. 3B is a schematic view of an embodiment of the present invention in which the airflow discharged from the fan has different flow rates to the upper and lower layers of the plurality of heat dissipation fins.

Fig. 4 is another schematic diagram of an embodiment of an assembled body according to the present invention.

Fig. 5 is a combined perspective view of another alternative embodiment of the present invention.

Description of reference numerals: a heat dissipation module 1; a base 11; a top side 111; a bottom side 112; a recess 113; base fins 115; a spacing 116; a heat pipe 12; a heat sink end 121; a heat dissipating end 122; a heat dissipating unit 14; heat dissipating fins 141; a two-phase flow heat dissipating structure 143; an air flow passage 15; a fan 2; a heating element 3.

Detailed Description

The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.

Referring to fig. 1 and 2, the heat dissipation module 1 includes a base 11, at least two heat pipes 12, and a plurality of heat dissipation units 14, where the base 11 may be a uniform temperature plate, a hot plate, a heat conduction block, or a heat sink, and the base 11 in this embodiment is a heat conduction block made of metal (such as copper, aluminum, titanium, stainless steel, or alloy), but is not limited thereto. The base 11 has a top side 111, a bottom side 112 and a plurality of grooves 113, the plurality of grooves 113 are formed on the bottom side 112 of the base 11, the plurality of grooves 113 are used for accommodating and combining a heat absorbing end 121 of the plurality of heat pipes 12, each heat pipe 12 is provided with the heat absorbing end 121 and a heat dissipating end 122 extending outwards from the heat absorbing end 121, the heat absorbing end 121 is arranged on the bottom side 112 of the base 11 and is flush with the bottom side 112 of the base 11, and the shape of each groove 113 is matched with the shape of each heat pipe 12. In one possible embodiment, the grooves 113 may be omitted, the heat absorbing ends 121 of the heat pipes 12 are directly integrated into the base 11, or the heat absorbing ends 121 of the heat pipes 12 are selectively disposed on the top side 111 or the bottom side 112 of the base 11 to contact with each other.

In another embodiment, the base 11 may have a chamber (e.g., a vapor-liquid phase change plate or a hot plate; not shown), and the heat absorbing ends 121 of the plurality of heat pipes 12 are connected to or disconnected from the chamber.

The heat dissipation ends 122 of the at least two heat pipes 12 are located above the top side 111 of the base 11 and arranged in a staggered manner in a high-low manner, in the embodiment, the plurality of heat pipes 12 are located on opposite sides of the base 11, but not limited thereto, and in different applications, the number of the heat pipes 12 may be two or more heat pipes 12 located on the same side (as shown in fig. 3A and fig. 4) or different sides of the base 11, and the heat dissipation ends 122 of the plurality of heat pipes 12 are located above the top side 111 of the base 11 in a staggered manner in a high-low manner and/or in a front-back manner. And an upper side of the heat absorbing end 121 of the plurality of heat pipes 12 is attached to the bottom side 112 of the base 11, a lower side of the heat absorbing end 121 of two heat pipes 1 of the plurality of heat pipes 12 is directly attached to and contacted with a heat generating component 3 (such as a cpu or a graphic processor or a single chip or other electronic components), and the heat dissipating ends 122 of the plurality of heat pipes 12 are layered and spaced at the same height above the base 11. For convenience of description, the heat dissipation ends 122 of the two heat pipes 12 located above in the plurality of heat pipes 12 are simply referred to as upper-layer (higher-layer) two heat dissipation ends 122, and the heat dissipation ends 122 of the other two heat pipes 12 located below are simply referred to as lower-layer (lower-layer) two heat dissipation ends 122.

The plurality of heat dissipating units 14 are coupled to the heat dissipating ends 122 (e.g., the upper two heat dissipating ends 122 and the lower two heat dissipating ends 122) of the plurality of heat pipes 12, the plurality of heat dissipating units 114 are spaced apart from each other, each heat dissipating unit 14 includes a plurality of heat dissipating fins 141, an air flow channel 15 is defined between every two heat dissipating fins 14, and the air flow channel 15 is used for guiding an external air flow to take away heat from more heat dissipating units 14 for heat exchange. The lower plurality of heat dissipating units 14 are separated from the upper heat dissipating unit 14 and the base 11 by a space 116, and the space 116 is used for external air flow (such as natural convection or forced convection) to pass through the plurality of heat dissipating fins 141 of the heat dissipating units, so as to avoid air flow obstruction and increase heat exchange efficiency.

The airflow channels 15 of the plurality of heat dissipation fins 141 of each heat dissipation unit 14 may be the same or different.

In the present embodiment, the airflow channel 15 of the heat dissipating unit 14 on the upper heat dissipating end 122 is different from the airflow channel 15 of the heat dissipating unit 14 on the lower two heat dissipating ends 122, that is, the width of the airflow channel 15 of the plurality of heat dissipating fins 141 of the upper heat dissipating unit 14 is greater than the width of the airflow channel 15 of the plurality of heat dissipating fins 141 of the lower heat dissipating unit 14. In the present embodiment, there are more heat dissipation fins in the lower layer of the heat dissipation unit, such that the airflow channels 15 between the lower heat dissipation fins 141 are narrower, and the airflow channels 15 between the upper heat dissipation fins 141 are wider, such that the airflow can pass through quickly and the flow rate of the airflow can be increased. In addition, the heat exchange efficiency can be effectively improved no matter the width of the airflow channel 15 among the heat dissipation fins 141 is increased to improve the flow rate of the airflow entering, or the width of the airflow channel among the heat dissipation fins 141 is reduced to replace the arrangement number of more heat dissipation fins 141 so as to increase the heat dissipation area, and the upper and lower heat dissipation units 14 of the invention can simultaneously provide various design combinations, so that compared with the existing heat sink, the heat sink has the advantages that the number of the channels or fins among the fins is fixed and cannot be changed, and the design of the invention provides more flexible fin configuration selection.

Therefore, the heat dissipation module 1 of the present invention is designed to increase the heat dissipation area by applying the space above, the plurality of heat dissipation units 14 are used to obtain more numbers of heat dissipation fins 141 by changing the height (i.e. height difference) of the layered interval on the base 11 to increase the heat dissipation area, and the plurality of heat dissipation units 14 designed to have different heights (e.g. front and back staggered or left and right staggered) are used to avoid the airflow obstruction, so as to effectively increase the flow rate passing through the heat dissipation fins 141 and achieve the purpose of improving the overall heat dissipation efficiency of the heat dissipation module 1. The heat dissipation module 1 of the present invention can be applied to an electronic device (such as a computer, a communication device or a server; not shown) to achieve a better heat dissipation effect for the heating element 3 in the electronic device in a limited space.

In other embodiments, the width of the airflow channel 15 of the plurality of fins 14 of the upper (higher) heat sink 14 is smaller than or equal to the width of the airflow channel 15 of the plurality of fins 14 of the lower (lower) heat sink 14. In still other embodiments, the plurality of heat dissipating units 14 (e.g., the upper heat dissipating unit 14 and/or the lower heat dissipating unit 14) are arranged in a segmented manner on the entire section of the heat dissipating end 12 (e.g., the upper heat dissipating end 122 and/or the lower heat dissipating end 122) of the heat pipe 12, optionally on any one or any two of the front section, the middle section and the rear section of the heat dissipating end. In other embodiments, the bottom sides of the heat dissipating units 14 (e.g., the upper heat dissipating unit 14 and/or the lower heat dissipating unit 14) are attached to the top side of a temperature equalizing plate (or a heat plate), and the heat dissipating ends 12 (e.g., the upper heat dissipating end 122 and/or the lower heat dissipating end 122) of the heat pipe 12 are connected to the bottom side of the temperature equalizing plate (or the heat plate).

In another alternative embodiment, referring to fig. 3A and 3B, the heat dissipation module 1 further includes at least one fan 2 (such as an axial fan or a centrifugal fan), the fan 2 is selectively disposed on one side of the base 11 or one side or a center of the plurality of heat dissipation fins 141 for guiding the airflow to the plurality of heat dissipation fins 141 for heat exchange to achieve forced heat dissipation, the fan 2 is disposed on one side of the base 11, an air outlet of the fan 2 discharges the airflow in the direction of the airflow channel 15 of the plurality of heat dissipation fins 141 corresponding to the upper and lower layers (upper and lower layers), and the flow resistance (flow field resistance) of the airflow flowing through the plurality of heat dissipation fins 141 of the upper layer (upper layer) is greater than the flow resistance (flow field resistance) of the airflow flowing through the plurality of heat dissipation fins 141 of the lower layer (lower layer). But not limited thereto, in another alternative embodiment, the flow resistance (or heat dissipation area) of the airflow flowing through the upper plurality of heat dissipation fins 141 may be designed to be smaller than the flow resistance (or heat dissipation area) of the airflow flowing through the lower plurality of heat dissipation fins 141.

In another alternative embodiment, referring to fig. 5, the base 11 further comprises a plurality of base fins 115, the plurality of base fins 115 are integrally disposed on the top side 111 of the base 11 to form a heat sink, and the heat pipe 12 and the heat dissipating unit 14 are alternatively illustrated as a single heat pipe 12 and a single heat dissipating unit 14, the base 11 and the plurality of base fins 115 are disposed at a high and low interval from the heat dissipating end 122 of the heat pipe 12 located above the base 11 and the heat dissipating unit 14, and the heat dissipating unit 14 and the plurality of base fins 115 are spaced by another interval 116. The heat dissipating unit 14 further includes a two-phase flow heat dissipating structure 143 (such as a temperature equalizing plate or a heat plate), one side of the plurality of heat dissipating fins 141 is attached to an upper side of the two-phase flow heat dissipating structure 143, and the heat dissipating end 122 of the heat pipe 12 is in contact with a lower side of the two-phase flow heat dissipating structure 143 or is directly connected to a chamber of the two-phase flow heat dissipating structure 143, so that the heat dissipating area and the airflow resistance of the upper and lower layers are adjusted by the concept of layered spacing between the heat dissipating unit 14 and the plurality of base fins 115, thereby effectively increasing the heat dissipating area and preventing the airflow from being blocked, and effectively improving the heat dissipating efficiency.

Claims

1. A heat dissipation module, characterized in that, comprising:

a base;

At least two heat pipes are provided with a heat-absorbing end and a heat-dissipating end extending outward from the heat-absorbing end, the heat-absorbing end is arranged on the base, and the heat-dissipating end of the at least two heat pipes is located above the base and is high , low interleaving settings; and

A plurality of heat-dissipating units are combined with the heat-dissipating ends of the at least two heat pipes, and the plurality of heat-dissipating units are spaced apart from each other.

2 . The heat dissipation module of claim 1 , wherein the base has a top side and a bottom side, the bottom side of the base has a plurality of grooves, and the plurality of grooves can accommodate and combine the The heat absorbing ends of at least two heat pipes are flush with the bottom surface of the base.

3 . The heat dissipation module of claim 1 , wherein an upper side of the heat-absorbing end of the at least two heat pipes is in contact with the bottom side of the base, and at least one of the at least two heat pipes is the heat-absorbing end. 4 . The lower side of the end is attached to a heating element.

4 . The heat dissipation module of claim 1 , wherein each of the heat dissipation units has a plurality of heat dissipation fins, an airflow channel is defined between two heat dissipation fins, and the plurality of heat dissipation ends of the at least two heat pipes have the plurality of heat dissipation fins. 5 . The airflow channels of the cooling fins may or may not be the same.

5 . The heat dissipation module of claim 1 , wherein the base is a vapor chamber, a heat plate, a heat conduction block or a heat sink. 6 .

6 . The heat dissipation module of claim 4 , wherein the width of the airflow channels of the plurality of heat dissipation fins on the heat dissipation end of the at least one heat pipe is greater than, equal to or smaller than the width of the air flow channel on the heat dissipation end of the other heat pipe. 7 . The width of the airflow channel of the plurality of cooling fins.

7 . The heat dissipation module of claim 4 , further comprising at least one fan, and the fan is selectively disposed on one side of the base or one side of the plurality of heat dissipation fins or in the center for the purpose of 7 . An airflow is guided to flow toward the plurality of heat dissipation fins for heat exchange.

8 . The heat dissipation module of claim 1 , wherein the heat dissipation ends of the at least two heat pipes are located above the base and are arranged staggered in front and back. 9 .

9. A heat dissipation module, characterized in that, comprising:

a base with a top surface and a bottom surface, the top surface is provided with a plurality of base fins;

At least one heat pipe is provided with a heat-absorbing end and a heat-dissipating end extending outward from the heat-absorbing end, the heat-absorbing end is arranged on the base, and the base and the heat-dissipating end are arranged at high and low levels; and

At least one heat dissipation unit is combined with the heat dissipation end, and the heat dissipation unit and the plurality of base fins have a distance.

10 . The heat dissipation module of claim 9 , wherein the heat dissipation unit comprises a plurality of heat dissipation fins and a two-phase flow heat dissipation structure, one side of the plurality of heat dissipation fins and an upper surface of the two-phase flow heat dissipation structure The heat dissipation end of the heat pipe is in contact with the lower side of the two-phase flow heat dissipation structure or directly communicated with a chamber of the two-phase flow heat dissipation structure.

11 . The heat dissipation module of claim 10 , wherein the two-phase flow heat dissipation structure is a uniform temperature plate or a hot plate. 12 .