JPH02211657A - Heat pipe type radiator - Google Patents

Abstract

PURPOSE:To offer a heat pipe type radiator hard to resonate when vibration is received from others by a method wherein both side parts of each radiating fin are connected to both terminal parts oil the neighboring radiating fins to be integrated. CONSTITUTION:A large number of radiating fins 2 having the bending parts 21, in which both side end parts are hookedly bent in the fixed direction and in the same size, holes 22 are formed on these radiating fins 2, while the neighboring radiating fins 2 are mutually and integrally connected by adhesion or welding at the tip parts of the bending parts 21 and a heat pipe 1 is press-fitted into the holes 22 of the respective radiating fins. In the respective radiating fins 2, resonance with vibration from others is suppressed. Further, hollows (a) are formed in the vertical direction between mutual radiating fins 2 so that a movement of cooling air is promoted through a chimney effect to more heighten radiation performance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention generally relates to a heat pipe type heat radiator, and more particularly, to a heat pipe type heat radiator that dissipates and cools heat generated from transistors, ICs, and other elements. This relates to a radiator for

``Prior art'' A heat pipe with a large number of heat dissipation fins attached to intersect with the heat pipe is used, and often six heat dissipation fins are attached to the heat pipe with a heat absorption block for attaching an element. Aluminum alloy plates and copper plates with good thermal conductivity and workability are used for this, and thin ones of about 0.20 to 1 mm are used due to constraints such as cost, workability, and weight.

The radiation fins and the heat pipe are fixed by press-fitting the heat pipe into the holes of the radiation fin or by expanding the heat pipe.

``Problems to be solved by the invention'' In conventional heat pipe type heat sinks, each heat sink is made of an independent thin plate, and the periphery of the fins is loose, making it easy to receive vibrations. When used to cool elements used in audio equipment, the heat radiation fins resonate due to vibrations from an amplifier, etc., and the resonance sound is likely to be added as noise to the audio output from speakers or headphones.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat pipe type heat radiator having a structure that does not easily resonate when subjected to vibrations from other sources, in order to prevent the generation of noise as described above.

"Means and Effects for Solving the Problems" One of the heat pipe type radiators according to the present invention achieves the above-mentioned objects. One or more heat pipes are provided with a large number of heat dissipation fins intersecting with the heat pipes, and each heat dissipation fin is connected to other heat dissipation fins adjacent to one or both sides so that the space between both sides in use is closed. Adopts continuous or connected means.

By configuring the radiation fins in this way, each radiation fin forms a hollow in the vertical direction with other radiation fins adjacent to it on one or both sides, and loses its independent existence, so that it does not receive vibration from others. also easily becomes a state where it does not resonate.

In addition, the vertical hollow formed by each heat dissipation fin together with the adjacent heat dissipation fin creates a chimney effect and promotes heat dissipation, and the heat dissipation area increases and the strength increases as both sides are closed together.

To connect both ends of the heat dissipation fin in the state of use as described above, for example, both sides of the heat dissipation fin are bent in a certain direction, and this bent portion is welded, glued, or caulked to the adjacent heat dissipation fin.

It may be fixed by soldering, brazing, screwing, or other known means, and the two sides of adjacent radiation fins are closed with a connecting plate, and both ends of each radiation fin are connected to this metal plate. It may be fixed by means such as those described above.

If each heat dissipation fin is integrally formed with another heat dissipation fin adjacent to it on one or both sides by extrusion or other means, both sides of the adjacent heat dissipation fins are configured to be continuous.

Another aspect of the beat pipe type radiator according to the present invention is to achieve the above-mentioned object. to one or more heat pipes,
A large number of heat radiating fins are provided to intersect with the heat pipe, and all or part of the large number of radiating fins are continuous or connected so as to have a zigzag or meandering shape when in use.

That is, by configuring the radiation fins in this way, one side of each radiation fin in its use state is continuous or connected to one side of another radiation fin adjacent to one surface. , become continuous or connected with the other side or one side of another radiation fin adjacent to the other side, and lose their independent existence, so that they easily resonate even when subjected to vibration from others. I won't.

In addition, as long as they are continuous or connected as described above, the heat dissipation area increases and the strength also increases.

In order to form a plurality of radiation fins into a planar jagged or serpentine shape, even if the sides of the radiation fins are connected by a connecting plate, the side end of one of the radiation fins is bent and this Even if the bent part is fixed to the adjacent radiation fin by appropriate means,
Alternatively, the radiation fins may be integrally formed by extrusion or the like.

In the heat pipe type heat radiator according to the present invention, a concave-convex pattern is formed on all or part of the heat dissipation fins, thereby further enhancing the resonance suppressing effect and increasing the strength of the heat dissipation fins.

The resonance prevention effect can be further enhanced by using a damping material for the heat dissipation fins. Such vibration damping materials include:
For example, IJ of multiple thin aluminum alloy plates or copper plates
For this purpose, a laminate in which vibration-damping plastics are sandwiched, aluminum-based alloys (for example (AI-Zn-based alloys), iron-based alloys, nickel-based alloys, and other vibration-absorbing alloys are preferably used).

The heat pipe used in the heat pipe type heat radiator according to the present invention is not limited to one having a circular cross section, but may also have an oval or other cross-sectional shape.

“Example J Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of this, in which a large number of heat dissipating fins 2 are provided, each having a hook-shaped bent portion 21 bent in the same direction at both ends thereof, and a hole 22 is formed in each of the heat dissipating fins 2. At the same time, the adjacent heat dissipating fins 2 are connected and integrated with each other by gluing or welding at the tip of the bent portion 21,
The heat pipe 1 is press-fitted into the hole 22 of each radiation fin 2.

In this embodiment, the heat dissipation fins 2 at the front and rear ends are
The lower end of the heat pipe 1 is extended to form a support 3 for attachment to equipment, and a heat absorption block (not shown) for attaching an element is attached to one end of the heat pipe 1 (front side [in FIG. 1)].

As mentioned above, by connecting both sides of each heat dissipation fin 2 in the use state, each heat dissipation fin 2 becomes difficult to vibrate independently even if it receives vibration from others, and resonance is suppressed. Rigidity is increased.

In addition, there is a hollow a in the vertical direction between each radiation fin 2.
As a result of this formation, the movement of cooling air is promoted due to the chimney effect, and the heat dissipation performance is further improved.

It is preferable that an aluminum alloy plate or a copper plate be used for the radiation fins 2, and that the holes 22 be made to protrude in a bearing shape by pressing or the like as shown in the figure in order to reduce the contact thermal resistance with the heat pipe 1.

The heat pipe 1 is inserted into the hole 22 of the radiation fin 2 by the tube expansion method.
When fixing to the hole 22, the heat pipe 1 is inserted into the hole 22 and expanded before the heat pipe 1 is sealed.

For example, as shown in FIG. 2, the radiation fins 2 are provided with irregularities 23 of annular or other arbitrary shapes to further enhance the vibration-proofing effect.
At the same time, its rigidity can be increased. If the pattern of the unevenness 23 is annular, it is preferable that it be asymmetrical with respect to the hole 22 from the viewpoint of vibration isolation.

A large number of heat dissipating fins 2 may be installed separately in two flocks, leaving the central part of the heat pipe 1 as shown in FIG. .

In order to connect the both sides of adjacent radiation fins 2 in use, for example, as shown in FIG. It is also possible to adhere or weld both ends of each radiation fin 2 to the connecting plate 24.

As illustrated in FIG. 5, a spacer-like connecting plate 24 is interposed between both sides of adjacent radiation fins 2, and the connecting plate 24 and the radiation fins 2 are bonded or welded. As illustrated in FIG. 6, flap-shaped bent portions 21 facing in a certain direction are formed at both ends of each radiation fin 2, and the adjacent radiation fins 2 are sandwiched between the bent portions 21 from the back. You can.

In the example shown in FIG. 6, in order to more firmly connect the radiation fins 2 to each other, the contacting portions of the bent portions 21 can be caulked.

As illustrated in FIG. 7, the heat dissipation fins 2 are extruded from aluminum alloy or the like so that a hollow a is formed between the heat dissipation fins 2, and this molded product is cut to a predetermined size. The holes 22 can be formed in the fins 2 using a drill or the like. In this case, both sides of adjacent radiation fins 2 are continuous in a closed state.

In the case of the above-mentioned extrusion molding, for example, as shown in FIG. By arranging a plurality of hollows A in a line between each other, it is possible to obtain a product that has a higher vibration damping effect and further increases the heat transfer area and rigidity.

In the embodiments shown in FIGS. 1 to 6, for example, a smooth connecting plate 24 as shown in FIG. 5 is interposed between adjacent fins 2 so as to be located inside from both sides, If this is fixed to the fins 2 by adhesion or welding, it is possible to obtain a heat radiator having substantially the same effect as the heat radiator shown in FIG. 11.

Other structures and their functions in the embodiments shown in FIGS. 3 to 7 and 11 are the same as those shown in FIG. 1, so their explanations will be omitted.

In the above embodiment, a plurality of hollows a are formed between both sides of each radiation fin 2 in a continuous or connected manner. It is also possible to carry out the method in which both sides of the radiation fin 2 are continuous or connected to each other so that the radiation fin 2 forms a hollow a only with another fin 2 adjacent to one side of the radiation fin 2. I can do something.

In the example shown in FIG. 8, two heat dissipating fins 2.2 adjacent to each other on only one surface are formed so as to form a deep groove shape, and the fins 2.2 are arranged at a predetermined interval and their The openings 25 are arranged on one side, one connecting plate 24 is placed on each opening 25, and the openings 25 are closed by gluing or welding to the connecting plate 24. The example shown in FIG. The heat dissipation fin 2 and the other heat dissipation fin 2 adjacent to one side of the heat dissipation fin 2 are integrally formed by extrusion using an aluminum alloy or the like.

Also in the heat dissipation fin 2 of the embodiment shown in FIGS. 8 and 9,
Each heat dissipation fin 2 is not independent, and the heat dissipation fin 2
Since a hollow a is formed between them, the same effect as in each of the above embodiments is achieved.

In the radiator shown in FIG. 8, the radiating fins 2 adjacent to each other on only one side may be connected to each other using, for example, a spacer-like connecting plate as shown in FIG. 5.

In addition, in the embodiments shown in FIGS. 1 to 7, instead of connecting or connecting all of the radiation fins 2, three or more of the radiation fins 2 are connected or connected so as to cover both sides of each other. You may use more than one.

FIG. 10 roughly shows another embodiment, in which each heat dissipation fin 2 is continuous so as to have a zigzag shape or a meandering shape on a plane when in use, and each heat dissipation fin 2
A hole 22 is formed in the hole 22, and a heat vibrator (not shown) is fixed in the hole 22 by a press-fitting method or a tube expansion method.

In this embodiment as well, one side of the radiation fin 2 and the opposing end of the other radiation fin 2 facing that one side may be connected using a connecting plate (not shown).
Similar to the embodiment shown in FIG. 1, a bent portion may be formed on one side of the radiation fin 2, and the tip of this bent portion may be connected to the opposite end of the adjacent radiation fin 2. It's coming.

Both sides of each heat dissipation fin 2 in Fig. 10 are continuous (or connected) with the side parts of different adjacent heat dissipation fins 2, and are not independent, so it is easy to receive vibrations from others. There is no resonance, the overall rigidity is increased, and the heat dissipation area due to the structure is also increased accordingly.

In such an embodiment, it is desirable for vibration isolation that the tips of the heat dissipating fins 2 at both ends be connected to the sides of the other heat dissipating fins 2 facing the tips, as shown in the figure.

The radiation fins 2 shown in FIGS. 4 to 11 can also be provided with appropriate irregularities to further enhance the vibration-proofing effect and rigidity.

In the heat sink of the embodiment shown in FIG. 9, a partition wall or a rift 2a shown in FIG. 11 is integrated between the fins 2 and 2 forming the hollow a so as to be located inside from both sides. By molding, it is possible to obtain a heat sink with higher vibration damping effect and higher rigidity as well as an increased heat transfer area.The fin 2.2 forming one hollow a and the adjacent hollow a The other fins 2, 2 may be interconnected.

In the embodiments shown in FIGS. 8 and 10, adjacent fins 2 are positioned closer to the inside than both sides, and the partition wall or rib 2a corresponds to the connecting plate 24 in FIG. 5 and FIG. 11.
If such members are connected or continuous, the damping effect and rigidity can be further enhanced, and the heat transfer area can be further increased.

The radiation fins 2 in each of the embodiments described above may not be square as in the embodiments described above, but may be elongated vertically or horizontally.

"Effects of the Invention" In the heat pipe type radiator according to the present invention, each of the radiating fins is not independent, but is integrated either on both sides in the usage state or continuously or connected with the adjacent radiating fin. It does not easily resonate even when subjected to vibrations from other sources, and does not become a noise source, making it suitable for use in cooling elements such as audio equipment.

Furthermore, by connecting or connecting the heat dissipation fins, the heat dissipation area increases and the heat dissipation effect is further enhanced, and the rigidity is increased and strengthened.

Furthermore, in the case where a hollow is formed between mutual heat dissipation fins, heat dissipation is further promoted due to the chimney effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the heat pipe type radiator according to the present invention, Fig. 2 is a perspective view showing another embodiment of the heat radiating fin, and Fig. 3 is a perspective view showing another embodiment of the heat radiator. The cross-sectional views shown in FIGS. 4 to 11 are perspective views showing other examples of radiation fins in the heat pipe type radiator according to the present invention. Explanation of the symbols in the main figures: 1 is a heat pipe; 2 is a heat dissipation fin 21; 22 is a bent portion; 22 is a hole 23; 24 is a partition wall or a rift; 24 is a connecting plate 2a; a is a partition wall or a rift;
Patent Attorney Kama 1) Hisa Otan 4 Figure 5 Figure 8 Figure 9

Claims (6)

[Claims] (1). One or more heat pipes are provided with a large number of radiation fins intersecting with the heat pipes, and each radiation fin is connected to other radiation fins adjacent to one or both sides so that the distance between the two sides in use is A heat pipe type radiator characterized by being continuous or connected in a closed state. (2). 2. The heat pipe type radiator according to claim 1, wherein both end portions of the radiation fin are bent in a certain direction, and the bent portions are fixed to adjacent radiation fins. (3). 2. The heat pipe type heat radiator according to claim 1, wherein the adjacent heat radiating fins are connected by closing the opposite sides of each other with a connecting plate in a state of use. (4). The heat pipe type heat radiator according to claim 1, wherein each radiation fin is integrally formed with other fins adjacent to one or both sides. (5). One or more heat pipes are provided with a large number of radiating fins intersecting with the heat pipes, and all or part of the large number of radiating fins are continuous so as to have a zigzag or meandering shape when in use. or a heat pipe type radiator characterized by being connected. (6). The heat pipe type radiator according to any one of claims 1 to 5, wherein all or some of the radiation fins have unevenness.