JPS5977292A - Flexible heat pipe - Google Patents

Abstract

PURPOSE:To obtain a heat pipe which can freely be bent and be fitted to any place in narrow space, by constituting a heat pipe of a flexible bellows pipe, filaments, and spring coils. CONSTITUTION:A heat pipe 10 is provided with a number of metallic or plastic filaments 18, annularly bundled in the longitudinal direction along the inner surface of a bellows pipe 12. The bundle of filaments 18 is pressed against the pipe 12 from its inside by the tension of spring coils 20 and is held between the spring coils 20 and the bellows pipe 12. A projected part 14b is provided to the outer surface of an end plate 14 of one heat pipe, while the outer surface of an end plate 14' of the other heat pipe is provided with a recess part 14'b. The inside of the bellows pipe 12 is vacuumized, and heating medium 22 of low boiling point is put into the pipe. When heat is absorbed on the side of an end plate 14', the heating medium 22 is evaporated and quickly reaches the side of an end plate 14, where the heating medium 22 is dew-condensated and quickly returns to the end plate 14' by a capillarly action, passing through the filaments 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to heat pipes, and particularly to heat pipes used to cool electronic components in various electronic devices.

Electronic components such as a single semiconductor element in an electronic device are placed in a narrow space inside the device, and it is preferable to use a heat pipe to cool the electronic components located in such a narrow space. However, the heat pipe of the conventional technology is 1ff.
111 M, 'j Since the heat pipe has a bend and cannot be bent freely, it is difficult to place the heat pipe in a narrow space and draw it freely outside.

The object of the invention is to provide a flexible heat pipe which can be freely mounted and therefore freely installed in narrow spaces.

When the uninvented embodiment is added to the drawings and published in revision 111,
1 to 3 show a flexible heat pipe 10 related to a non-explosion J, and each step in each figure shows a +d plurality of heat vibrators 1o connected to each other.

[Flexible Heat Pipe] 0 is equipped with a metal bellows-shaped pipe 12, as shown in detail in Fig. 2 and Fig. 3, and this bellows-like pipe J2 is a small-diameter pipe with its both ends joined in close contact with each other. The copper plates having sections]-1a, 1.4'a are sealed by thermally conductive end plates 14, 14'. The flexible heat pipe 10 has opposing end plates 14 and 14' in contact with each other while maintaining a heat conduction relationship to provide continuity. In order to ensure this heat conduction relationship, the outer surface of one 'lft11 plate J4 is The other end plate 14' has a convex portion 141) on its outer surface, and a concave portion 14'b that complements the convex portion. Note that both ends of this bellows-shaped pipe 120 are connected to the small diameter portion 14 of the end plate 14, 14'.
a, 14' It is preferable to cover the heat-shrinkable tube (6) in order to bring it into close contact with a.

The heat vibrator] O further includes a large number of sets or plastic filaments 1:3 extending longitudinally along the inner surface of the bellows-shaped pipe 12 and bundled into a ring. The bundle No. 18 is held between the bellows-shaped pipe 12 and the inside of the bundle is pressed by a spring coil 20 disposed inside the bundle.

The inside of the bellows-shaped vibrator 12 has been completely vacuumed, part 1.
A low boiling point heat medium 22 such as water or Freon is housed in the chamber.

In this heat pipe, when the end plate 14' side absorbs heat,
The heat medium 22 evaporates and quickly reaches the end plate 1411111.
:≦The dew condenses on the end plate 14 side and quickly returns to the end plate 34' within the filament 18 by capillary action. Both of these heat vibes are bellows-shaped pipes with EJ deflection 1'AE,
It consists of a filament and a spring coil, so it has a four-hooked structure as a whole.

According to the invention, as mentioned above, since the heat vib' has flexibility as a whole (it can be freely placed even in the narrow space of the cooking device), it is possible to , J.
:l, 1:'3 of 4/h in '+'i, good for cooling child parts:+, 1121.

[Brief explanation of the drawing]

Figure 1 is a side view of the connected state of the heat vibrator, ^tFigure 2 is the river related to the darkness (J, ; side view of the connected state of the sex heat vibrator,
An enlarged vertical cross-sectional view of a 4-character heat pipe, ;'p; Figure 3 is 1
FIG. 2 is an enlarged cross-sectional view of two re-extraction heat pipes. 10-----One flexible heating pipe, 12----One bellows-shaped pipe, 1.4, ]lI'----One end plate,
14b, ,+4'1)----One convex part and concave part, 18-
----- Filament, 2-lead spring coil,
22-----A heating medium.

Claims (2)

[Claims] (1) A bellows-shaped pipe, a multi-pronged filament extending inwardly toward the edge of the bellows-shaped pipe and bundled into an annular shape;
=J consists of a spring coil for holding a filament and a 4 m< for sealing both ends of the bellows-shaped pipe, and a body is housed in the bellows-like pipe. flexible heat pipe. (2) The end plate that closes one end of the bellows-shaped pipe and the end plate that closes the other end have recesses and protrusions on their outer surfaces that complement each other. Possible JA'+ sex heat vibe.