CN105278648B - Heat radiator for notebook computer - Google Patents

Abstract

The invention discloses a kind of heat radiator for notebook computer, including fin, heat pipe, heat collector and multiple exit synthesizing jet-flow radiator, the heat radiation chips such as CPU, GPU of computer are placed on heat collector, heat pipe conducts the heat on heat collector to fin, to multiple exit synthesizing jet-flow radiator input control signal, synthesizing jet-flow can be generated in both direction, radiated to fin.The present invention solves the problems, such as that existing radiating efficiency is not high, simple and compact for structure using multiple exit synthesizing jet-flow radiator, reduces and occupies volume, reduces power, strengthens heat dissipation, extends the laptop service life, increases cruise duration.

Description

Laptop cooling device

technical field

The invention belongs to the heat dissipation field of a portable computer, and relates to a heat dissipation device for a notebook computer.

Background technique

With the rapid development of the information industry, microelectronic devices tend to be highly integrated, high-performance, and miniaturized. At the same time, the heat dissipation pressure of microelectronic devices is increased, making heat dissipation a bottleneck in the development of integrated circuit technology. The temperature is related to the stability and service life of the entire electronic equipment system. For example, if the CPU is operated above 80°C for a long time, not only the CPU may be damaged, but the motherboard will also age rapidly.

Computer has become an indispensable part of people's work and life, especially the convenient notebook computer has been welcomed by most people. At the same time, as a representative product of highly integrated electronic equipment, its heat dissipation efficiency has become the bottleneck of its performance development. more people's attention.

At present, notebook computers generally use heat pipes, fins and fans for heat dissipation. This method still has the disadvantage of low heat dissipation efficiency; in recent years, notebook computers with dual heat dissipation have appeared, but they take up extra space; There are also ultra-thin laptops, but most of them have lower configurations, sacrificing performance for heat reduction.

Contents of the invention

In view of this, in order to solve some of the above-mentioned problems, a notebook computer heat dissipation device is proposed, which applies synthetic jet technology to notebook computer heat dissipation, and uses the flow field characteristics and entrainment capacity to achieve enhanced heat dissipation.

To achieve the above object, a notebook computer cooling device of the present invention includes: a first group of fins, a second group of fins, a heat pipe, a heat collector and a multi-exit synthetic jet radiator; the first group of fins and the second group of fins Both sets of fins and heat collectors are arranged on the heat pipe, and the outlets of the first set of fins and the second set of fins form a certain angle, and the multi-export synthetic jet radiator has two nozzles, respectively It corresponds to the outlet of the first group of fins and the second group of fins.

Further, the heat pipe is in a "U" shape, the first group of fins is arranged on the bottom of the heat pipe, and the second group of fins is arranged on one side of the heat pipe, so The heat collector is arranged on the other side of the heat pipe, and the angle between the two sides and the bottom of the heat pipe is 90°; the multi-outlet synthetic jet radiator is located on the heat pipe between the two sides of the .

Further, the multi-outlet synthetic jet radiator includes several vibrating plates, a casing, an intermediate layer, an upper cover, and a lower cover; the upper cover, the casing, and the lower cover are sequentially arranged from top to bottom to form The vibrating piece accommodation cavity, the vibrating piece is arranged in the said accommodating cavity, an intermediate layer is arranged between every two vibrating pieces, and two adjacent vibrating pieces and the intermediate layer arranged between them form an opening on one side The airflow chambers of the two adjacent airflow chambers have different nozzle directions.

Further, both the upper cover and the lower cover are "L" shaped, and the casing is an "L" shaped hollow casing.

Furthermore, the angle between the directions of the nozzles of the two adjacent air flow chambers is 90°.

The upper cover and the lower cover are provided with fixing holes, the housing is provided with fixing holes, and the position of the fixing holes on the housing is related to the fixing of the upper cover and the lower cover. corresponding to the hole position.

Beneficial effects: the notebook computer cooling device of the present invention has low power, small volume, simple structure, and convenient control, and only needs an AC signal of a certain frequency and voltage to perform accurate control; two groups of fins share a multi-exit synthetic jet The radiator reduces the space used; the height of the middle layer of the multi-exit synthetic jet radiator is the same as the height of the cavity and the outlet, so that it has a smaller structural size in the vibration direction of the vibrating plate, reducing the integrated installation area and making full use of the space .

Description of drawings

Fig. 1 is the isometric side view of notebook computer cooling device of the present invention;

Figure 2 is an isometric side view of the multi-outlet synthetic jet radiator of the present invention;

Fig. 3 is the partial enlarged view of place C in Fig. 2;

Figure 4 is an exploded view of the multi-outlet synthetic jet radiator of the present invention;

Fig. 5 is the plan view of multi-outlet synthetic jet radiator of the present invention;

Fig. 6 is the schematic diagram of the working state of the multi-outlet synthetic jet radiator of the present invention;

In the figure, 1 is the first group of fins; 2 is the second group of fins; 3 is the heat pipe; 4 is the heat collector; 5 is the multi-exit synthetic jet radiator; 51 is the vibrating plate; Layer; 54 is the upper cover; 55 is the lower cover; 6 is the first airflow chamber; 7 is the second airflow chamber.

Detailed ways

Below in conjunction with embodiment the present invention will be further described.

The notebook computer cooling device in Fig. 1 includes: the first set of fins 1, the second set of fins 2, the heat pipe 3, the heat collector 4 and the multi-exit synthetic jet radiator 5; the heat pipe 3 is in an approximate "U"-shaped structure , the first group of fins 1 is arranged on the bottom of the heat pipe 3, the second group of fins 2 is arranged on one side of the heat pipe 3, the heat collector 4 is arranged on the other side of the heat pipe 3, the heat pipe 3 The angle between the two sides and the bottom edge of the "U" shape is 90°, so that the outlet directions of the first set of fins 1 and the second set of fins 2 are 90°; the multi-exit synthetic jet radiator 5 is located between the two sides of the heat pipe 3, the multi-outlet synthetic jet radiator 5 is a square structure and has two nozzles, and the two nozzles correspond to the outlets of the first group of fins 1 and the second group of fins 2 respectively. As shown in Figures 2 to 4, the multi-outlet synthetic jet radiator 5 includes several vibrating plates 51, a housing 52, an intermediate layer 53, an upper cover 54, a lower cover 55 and wires (not shown); The cover body 54 and the lower cover body 55 are both "L"-shaped structures, and the upper cover body 54 and the lower cover body 55 are provided with corresponding fixing holes, and the housing 52 is an "L"-shaped hollow housing. The body is provided with fixing holes, and the positions of the fixing holes correspond to the positions of the fixing holes on the upper cover body 54 and the lower cover body 55. The upper cover body 54, the housing body 52 and the lower cover body 55 are arranged in sequence to form a " L”-shaped vibrating piece accommodation cavity, the vibrating piece 51 is arranged in the accommodating cavity, and an intermediate layer 53 is arranged between every two vibrating pieces 51. The middle layer 53 is a square structure with one side open, and two adjacent vibrating pieces 51 and the intermediate layer 53 arranged between the two form an air flow cavity with an opening on one side. The air flow cavity is a cuboid structure. As shown in Figure 5, the opening of the air flow cavity is the nozzle of the air flow. Inconsistent, the included angle is 90°, the direction of the nozzle of the airflow chamber corresponds to the position of the two sets of fins, for example: if two adjacent airflow chambers, one of the nozzles of the airflow chamber is aligned with the first group of fins 1, then The opening of the other airflow chamber is aligned with the second group of fins 2, and the number of vibrating pieces 51 can be set according to needs, thereby determining the number of airflow chambers. The more the number, the more airflow nozzles formed, and the better the heat dissipation effect. it is good.

Specifically, the multi-outlet synthetic jet radiator 5 has ultra-thin characteristics, and the minimum can be about 2.5 mm. The vortex pairs of the synthetic jets will be formed on both sides of the center line. The overall width of the jet is greater than the thickness of the jet radiator, so the height of the fins It is better to be slightly larger than the jet radiator 5 by 0-4mm.

The vibration plate 51 of the multi-outlet synthetic jet radiator 5 is mainly driven by a piezoelectric type, including a metal plate and a piezoelectric ceramic plate arranged in the center of the metal plate. The housing 52, the middle layer 53, the upper cover 54, etc. Made of conductive materials, such as PP, PVC and other plastics.

The metal sheet and the piezoelectric ceramic sheet of the vibrating sheet 51 are respectively connected with an electrode lead, which is connected with an excitation control device (not shown in the figure) for inputting an AC signal. The driving signal waveform output by the excitation control device is mainly a sine wave, but not limited to a specific waveform, and may also be a square wave, a triangular wave, a trapezoidal wave and other waveforms that meet the requirements.

The outlets of the multi-outlet synthetic jet radiator 5 are not limited to two outlets, and five membranes and four outlets, seven membranes and six outlets can be used to meet the needs of different working conditions. When there are more than two exits, make the exits in odd order face the same direction, and the exits in even order face the same direction.

When using the notebook computer cooling device to dissipate heat, the heat collector 4 is electrically connected to heat-generating chips such as CPU and GPU, and conducts heat to the first group of fins 1 and the second group of fins 2 through the heat pipe 3, and the excitation control device controls the vibration. Plate 51 inputs a sinusoidal drive voltage signal of the same frequency and amplitude, and the vibrating plate produces elastic deformation under the drive of the sinusoidal signal, as shown in Figure 6, taking two adjacent airflow cavities formed by three vibrating plates 51 as an example, the first The outlet of the airflow chamber 6 and the outlet of the second airflow chamber 7 are perpendicular to each other, and the excitation control device drives a plurality of vibrating plates 51 to produce satisfactory deformations, so that the first airflow chamber 6 and the second airflow chamber 7 are in two states of contraction and expansion respectively, When the first airflow chamber 6 expands (corresponding to the left half of Fig. 6), the gas is sucked in, and the second airflow chamber 7 ejects gas in a contracted state; otherwise when the first airflow chamber 6 shrinks (corresponding to the right half of Fig. 6 part), the gas is ejected, while the second air flow chamber 7 is in an expanded state, and the gas is sucked in from the nozzle. The nozzles of the two airflow chambers are angled to generate two synthetic jets, as shown in Figure 5. The two synthetic jet radiators 5 with different phases and directions perform enhanced convection on the first set of fins 1 and the second set of fins 2 to achieve the purpose of heat dissipation.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be carried out to the technical solutions of the present invention. These equivalent transformations All belong to the protection scope of the present invention.

Claims (5)

1. a kind of heat radiator for notebook computer, which is characterized in that including：First group of fin (1), second group of fin (2), heat pipe (3), heat collector (4) and multiple exit synthesizing jet-flow radiator (5)；First group of fin (1) and second group of fin (2), thermal-arrest Device (4) is arranged on the heat pipe (3), and the outlet of first group of fin (1) and second group of fin (2) is at certain angle Degree, there are two spouts for the multiple exit synthesizing jet-flow radiator (5) tool, respectively with first group of fin (1), second group of fin (2) Outlet it is corresponding；The multiple exit synthesizing jet-flow radiator (5) includes several vibrating reeds (51), shell (52), middle layer (53), upper cover body (54), lower cover (55)；The upper cover body (54), shell (52) and lower cover (55) are set successively from top to bottom It sets to form vibrating reed accommodating chamber, the vibrating reed (51) is arranged in the accommodating chamber, and each two vibrating reed is arranged between (51) There are middle layer (53), adjacent two vibrating reeds (51) and the middle layer (53) being arranged between to form the gas of a side opening Chamber is flowed, the spout direction of the two neighboring air flow chamber differs.

2. heat radiator for notebook computer according to claim 1, which is characterized in that the heat pipe (3) is in the knot of U-typed Structure, first group of fin (1) are arranged on the bottom edge of the heat pipe (3), and second group of fin (2) is arranged in the heat pipe (3) on a side, the heat collector (4) is arranged on another side of the heat pipe (3), and the two of the heat pipe (3) Angle is 90 ° of bent angles between a side and bottom edge；The multiple exit synthesizing jet-flow radiator (5) is located at the heat pipe (3) Between two sides.

3. heat radiator for notebook computer according to claim 1, which is characterized in that the upper cover body (54) and lower cover (55) it is L-shaped structure, the shell (52) is the hollow housing of " L " type.

4. heat radiator for notebook computer according to claim 1, which is characterized in that the spray of the two neighboring air flow chamber The angle in mouth direction is 90 °.

5. heat radiator for notebook computer according to claim 1, which is characterized in that the upper cover body (54) and it is described under Mounting hole is set on lid (55), is provided with mounting hole on the shell (52), on the shell (52) position of mounting hole with The upper cover body (54) is corresponding with the mounting hole position on the lower cover (55).