JPS63238395A - Heat pipe mounted and dismounted by its spiral rotation - Google Patents

Abstract

PURPOSE:To make the mounting and dismounting of a heat pipe very easy and minimize the resistance to the contact heat which is generated at the insertion and attachment section by forming a cap which seals and closes the end of a container in a sturdy structure which withstands a powerful spiral rotation torque and external force for insertion and pulling-out and forming on the end face of the cap a structure of female type for insertion and pulling-out by spiral rotation. CONSTITUTION:For example, on a cap 2 both a structure section 3 of insertion and pulling-out by spiral rotation and a working liquid sealing section 4 of non-projection type are provided simultaneously. In the working liquid sealing section 4 of non- projection type a small diameter pipe 4-4 for sealing is crushed by a pin for crushing which is pressed in from a side hole 4-2 for crushing in a throughhole provided in the cap to seal the working liquid in the state that a crushing section 4-1 is incorporated in the cap. A soldering junction 4-3 improves the reliability of crushing in the crushing section 4-1. Because the projection section in the conventional device is not left, it is possible to carry out easily the spiral rotation work. Further, the heat pipe has no projection section entirely so that it is possible to make the effective length of the heat pipe when it is inserted longer.

Description

DETAILED DESCRIPTION OF THE INVENTION A6 Objective of the Invention (Field of Industrial Application) The present invention relates to the structure of a heat pipe. The outer periphery of the special container or the outer periphery of a group of fins provided on the outer periphery of the container is formed into a cylindrical shape, and the heat guide is subjected to a line pressurizing force (or pulling force) or a line pressurizing force (or pulling force). ) and a combined pressing force (or pulling force) caused by ultrasonic vibration, and the heat pipe is easily and closely inserted into the heat pipe.

(Prior art) When a heat pipe is used, its entire length is inserted into a hole under pressure, and the heat receiving part or the heat dissipation part is inserted into a hole under pressure. There are many examples where it is used. When installing in this way, should thermally conductive grease be applied to the insertion surface?

It is common knowledge that this is carried out using molten solder. The main purpose of thermally conductive grease and molten solder in these cases is to reduce the contact thermal resistance of the part after insertion is completed, but they can also be used as lubricants during press-fitting to improve insertion workability. is also an important purpose of use. However, in order to sufficiently reduce the contact thermal resistance after the insertion is completed, it is necessary to make the lubricant film left on the insertion surface sufficiently thin. However, if the clearance between the insertion surfaces is made sufficiently small during press-fitting, the viscous resistance of the lubricating film will increase rapidly, and the necessary pressing force will increase dramatically, making press-fitting impossible. - Often caused damage to To Quizo. In order to avoid this, the practical insertion state is generally to provide a sufficiently large clearance so that neither pressing force nor pulling force is required for insertion and removal. In actuality, the diameter is 10mm and the insertion length is 300mm.
In the case of about mx, it is usually inserted using thermally conductive grease with a clearance of about 0.15 m111.

However, even though it is called a thermally conductive grease, its thermal conductivity is only a few hundredths of that of pure copper, so its contact thermal resistance is extremely large. This greatly reduced the effectiveness. In such a case, the desired clearance is 0.03 ynw or less, and if possible, it is desirable to reduce the clearance to zero by shrink fitting, but it is nearly impossible to shrink fit the heat pipe, and it is difficult to In many cases, it is not possible to heat the insertion object,
It has been desired to reduce the clearance as much as possible using normal insertion/extraction means.

Another method for making the clearance extremely small is a press-fitting method using impact. However, because of its original purpose as a heat transfer means and for good compatibility with the working fluid, thin-walled pure copper or pure aluminum is often used, and other metal materials are also used. In many cases, the wall thickness is extremely thin, such as 0.2 to 0.3 mm, and it is difficult to perform impact press-fitting without deformation or damage.

Furthermore, for the same reason, it is extremely difficult to remove the heat pipe once press-fitted, and in many cases, the heat pipe after removal becomes almost impossible to reuse due to deformation and damage.

Publication of Utility Model Publication Nos. 1982-63415 and 1982-10457 as line drawing detachable heat/mother tube with conventional structure
No. 4 is proposed. Are these all fastening bolts intended for mechanical fastening between mechanical parts? root type heat) a? In order to exert fastening force, Eve requires a sufficient wall thickness that is unimaginable for normal heat pipes, and it is also necessary to add extra and large wall thickness to form the thread, which is necessary for normal heat transfer. It has a structure that sacrifices heat transfer performance, making it completely unusable as a heat pipe for general use or heat equalization. These were fastening bolts with some added heat transfer performance, and they were so different that they could not be called line drawing type heat pipes.

There is another patent application No. 102063/1983 proposed by the inventor of the present invention as another removable line drawing heat/mother tube. In this proposal, a part of the spiral fin for convection heat reception and radiation provided on the outer wall of the heat pipe container acts as a male screw, and the heat pipe is inserted and removed by line drawing.

Unlike fastening bolts, attachment and detachment in this case does not require strong line drawing force, and the required line drawing force can be freely selected by selecting the shape of the fan-shaped slit provided in the flat plate that is the object to be inserted. There was no risk of deforming or damaging Heat Mother Eve. However, when heat pipes are long and a large number of heat pipes are attached, it is inefficient to manually attach and detach them while grasping the outer circumference of the spiral fins, as the number of line drawings is quite large. There was a need for an easy means for attaching and detaching line drawings.

(Problems to be Solved by the Invention) The present invention performs insertion and removal by making the insertion clearance of the heat pipe extremely small, and as a countermeasure against the high viscous resistance of the lubricant that occurs during this process, a line drawing is used as a means to alleviate the resistance. A new structure is provided to make it possible to employ press-fitting, line-drawing removal, or ultrasonic recapture press-fitting, and ultrasonic line-drawing removal. The present invention also provides a new structure that facilitates mechanization of the line drawing attachment and detachment of a heat pipe in which spiral fins for convection heat reception and radiation are provided on the smooth outer peripheral wall surface of a cylindrical container.

1. Structure of the Invention (Means for Solving the Problems) The means for solving the problems related to the present invention are as follows: ``The cap that seals and closes the end of the container has a structure that can withstand strong target torque and insertion/extraction pressure. The first characteristic is that it is formed as follows.

Increase the thickness of the cap specifically for FC. To sufficiently expand the adhesion area between the outer periphery of a cap and a container. These increase the strength of the heat and sleeve terminals against the target torque and insertion/extraction pressure. The second feature is that ``the end face of the reinforced cap is provided with a structure for inserting and extracting line drawings that enables line drawings to be press-fitted with a retrieval tool having a predetermined structure or a retrieval tool that uses pressure applied by ultrasonic imaging. There is.”
As specific examples of such structures, width across flat structures such as spanners, wrenches, screwdrivers, etc. are mainstream. A line drawing structure using friction such as a cone clutch structure may also be used. Depending on the structure, it may be used exclusively for press-fitting, or may be used exclusively for removal, or both.
It is tightly connected to the tip of a retrieval tool containing a built-in ultrasonic transducer by twisting as a structure for transmitting the information to the mother eve. There is also a co-structure. The third feature of the problem-solving means is that ``The structure for press-in and removal using a screw thread is formed with a male shape on the target tool side.

The cap side of the heat pipe is all female-shaped. ” point. If the heat pipe side is male and is formed to protrude from the end surface of the heat/mother pipe, it will be heat) /I
The effective length of the P-bub for heat transfer must be short, especially if this part is inside the insertion part, shortening the effective length may be fatal.

Hee) aJ? Normally, a thin tube is left on one end of the tube for creating a high vacuum in the container and sealing the container with hydraulic fluid. A structure for press-fitting and removing line drawings is provided, and even if it is a female type, the thin tube protrusion gets in the way and makes line drawing work difficult, and the effective length of the heat and eve is significantly shortened. There are cases.

As a countermeasure to this problem, [a structure in which a structure for press-fitting and extracting line drawings and a non-protruding hydraulic fluid sealing structure are provided together] may be used as a means to solve the problem.

(Function) If it is difficult to press fit when inserting a cylindrical insert into a cylindrical or circular insertion hole using lubricant, it is easy to press fit by using line drawing pressure treatment even if the insert does not have a threaded structure. It is common knowledge that

It is also generally accepted that ultrasonic vibration pressurization reduces frictional resistance. However, a heat pipe with a structure that facilitates these operations has not been put into practical use. This is due to the fact that the conventional heat pipe insertion method, which increases the clearance and sacrifices the performance of the heat pipe, has become common knowledge and taken for granted.

If target pressurization is carried out with a small clearance, not only will the viscous resistance of the lubricant increase, but also extremely large frictional resistance due to partial metal-to-metal contact may also be present. .

In this case, press-fitting and removal can be facilitated by applying pressure using ultrasonic vibration. In the case of only viscous resistance, the energy of ultrasonic vibration is absorbed by the lubricant film and the effect is very small, but when metal-to-metal frictional resistance is present as described above, the effect is extremely large. A press-fitting means that utilizes such a combined effect has not been considered at all in the past. A line drawing tool incorporating an ultrasonic vibrator according to the present invention and a line drawing removable heat pipe provided with a corresponding fastening structure can be inserted and removed with extremely small clearance. The internally threaded drawing insertion/removal structure allows for strong fastening, which not only allows effective transmission of ultrasonic energy to the heat/zobe, but also enables effective drawing insertion/removal for both press-fitting and removal. I can do it. In the case of a normal width across flat structure, it is generally effective only when press-fitting line drawings, and for removal, it is necessary to add a special hanging structure that allows the line drawing tool to withstand the pulling force and not come off. The heat pipe installed on the female side of the cone clutch has good connection with the line drawing tool and has good workability, but is unsuitable for extraction work.

The structure in which a non-protruding hydraulic fluid sealing part is provided has the advantage that the ineffective part of the heat pipe is only at one end, and the effective length can be longer than other structures.

The helical fin-equipped heat gloss blade to which the structure according to the present invention is applied not only allows for very easy attachment and detachment of the target, but also allows easy application of mechanized attachment and detachment.

(Example) An example of the line drawing removable heat pipe according to the present invention will be described below with reference to the drawings. Since there is no similar conventional structure, illustrations of examples of conventional structures are omitted.

FIRST EMBODIMENT FIG. 1 and FIG. 2 show a heat pipe having a line drawing insertion/extraction structure with a width across flat structure. All are good.

is a partial sectional view, and is a side view. 1 is a cylindrical container and 2 is a cap. The cap is thicker than the cap of conventional structure, and the soldered surface of the soldered part 5 with the container has a sufficiently large area, so it can withstand the large drawing torque and insertion/extraction pressure that occur when inserting/extracting the drawing. It seems to be durable enough. Reference numeral 3 denotes a female line drawing insertion/extraction structure, which in FIG. 1 is formed into a shape corresponding to a hexagonal wrench bar.9, and in FIG. 4 is a hydraulic fluid sealing part, and 4-1 is a welding part at the tip thereof. In FIG. 3, the line drawing insertion/extraction structure 3 is formed as the female side of the cone clutch, and the male side is provided on the recovery insertion/extraction tool side. In the case of this type, the line drawing is created by friction, and the line drawing can be inserted and attached simply by press-fitting.

Second Embodiment In the second embodiment, an ultrasonic vibrator is built into a line drawing insertion/extraction tool (not shown), and the tip of the tool is fastened to the line drawing insertion/extraction tool to simultaneously apply pressing force and line drawing force due to ultrasonic vibration. It is now added to Heat/Zoive. When using the ultrasonic pressurizing force for the line drawing insertion/extraction structure 3 shown in FIGS. 1 to 3, it is necessary to install a predetermined fastening jig on the tool side.

Third Embodiment Corresponding to the second embodiment, the line drawing insertion/extraction structure 3 formed in the female screw structure illustrated in FIG. It is a structure. Line drawings can be press-fitted without any special assistance because they are tightly fastened just by screwing in the line drawing tool.

Line drawing removal, ultrasonic press-fitting, and ultrasonic removal can all be easily performed. Another advantage of the internally threaded structure is that it is easiest to form compared to other embodiments.

Fourth Embodiment FIG. 5 shows an embodiment in which a cap 2 is provided with a drawing insertion/extraction structure 3 and a non-protruding hydraulic fluid sealing part 4. In the non-protrusion type hydraulic fluid sealing part 4, the sealing thin tube 4-4 is crushed within the through hole provided in the cap by a crushing bottle press-fitted from the crushing side hole 4-2, A crushing portion 4-1 is built into the cap to seal the hydraulic fluid.

4-3 is a soldered part for improving the crushing reliability of the crushing part 4-1. Since there are no protrusions left as in the conventional structure, retrieval work can be carried out easily. Furthermore, since the heat pipe of this embodiment does not have any protrusions, the effective length of the heat pipe at the time of insertion can be increased.

Fifth Embodiment FIG. 6 shows an embodiment in which the structure according to the present invention is applied to a cylindrical heat pipe with spiral fins. A, is a schematic partial cross-sectional view of the heat pipe, and 6 is a spiral fin, which is provided on the smooth outer circumferential wall of the cylindrical heat pipe l at a uniform pitch. 9
is a partition wall which is an object to which the heat pipe is inserted. The opening shows an insertion hole 7 and a fan-shaped slit 8 provided in the partition wall 9.

The spiral fins 6 are inserted into the fan-shaped slits 8, and the cylindrical heat pipes 1 are inserted into the insertion holes 7, respectively, and are press-fitted by line drawing.

The line drawing torque required for press-fitting the line drawing is adjusted by the width of the fan-shaped slit. Due to the action of the line drawing insertion/extraction structure 3, insertion and removal of the heat pipe becomes extremely easy, and mechanized insertion and removal is also possible.

C1 Effects of the Invention As described above, the present invention makes it extremely easy to attach and detach the heat gloss tube, reduces the clearance necessary for attaching and detaching, and minimizes the contact thermal resistance generated at the insertion part. It has the effect of improving the performance of

Also, for mass production insertion, it is possible to mechanize the insertion and removal work9.
Efficiency has been improved, and the heat that previously occurred during manual attachment/detachment has been improved. Deformation and damage to the engine are also reduced, making it easier to remove the work, and it is also possible to increase efficiency through mechanization.

[Brief explanation of the drawing]

In each drawing, the A figure is a partial cross-sectional schematic diagram, and the Ross figure is a side view. Figures 1 and 2 show a 9-tube heat 9-tube that is removable for line drawings, each having a female line drawing insertion/extraction structure with a width across width structure. Figure 3 shows a removable heat/quip having a structure for insertion and removal of the female side of the cone clutch. Figure 4 shows a drawing removable heat guide having a drawing insertion/extraction structure with a female screw structure. Figure 5 shows a line drawing of a removable heat/dyno with a structure that includes a non-protruding hydraulic fluid sealing part. Figure 6 is a line drawing of a removable type with spiral fins.
a' . 1... Cylindrical container, 2... Cap, 3...
Line drawing insertion/extraction structure part, 4... Hydraulic fluid sealing part, 5... Brazing part, 6... Spiral fin, 7... Insertion hole, 8...
... 2 fan-shaped slits, 9... bulkheads. Patent Applicant Actronics Co., Ltd. District 1 (A) (B) 2nd Drawing (A) (O) Fig. 3 (A) (B) 4th Day (A) (Lola Fig. 5)

Claims (5)

[Claims] (1) The outer peripheral wall surface of the container is smooth, and the cylinder is used by being tightly inserted into the insertion hole provided on the object to be inserted or into the circular hole provided in the flat plate to be inserted. The cap, which seals and closes the end of the container, has a strong structure that can withstand strong screw torque and external insertion/extraction forces. 1. A removable screw heat pipe characterized in that a female screw insertion/extraction structure is formed that corresponds to a screw insertion/extraction tool or a male ultrasonic insertion/extraction tool having a predetermined structure. (2) An ultrasonic vibrator is disposed in a male screw insertion/extraction tool having a predetermined structure, and the insertion/extraction tool is configured to be able to perform ultrasonic insertion/extraction and screw insertion/extraction at the same time. A spirally removable heat pipe according to claim (1). (3) The screw-type heat pipe according to claim (1), wherein the female-type screw insertion/extraction structure formed on the end face of the cap has a female screw structure. (4) The cap is characterized by being provided with a non-protruding hydraulic fluid sealing section that is attached to the female screw insertion/extraction structure and has a hydraulic fluid sealing section built into the cap. A removable spiral heat pipe according to claim (1). (5) The cylindrical heat pipe is characterized in that it is a heat pipe in which spiral fins are provided on the smooth outer peripheral wall surface of the cylindrical container inside the curtain for receiving and dissipating heat through convection of a heat transfer fluid. A spiral heat pipe according to claim (1).