JPS616586A - Smoothing method of temperature distribution and heat pipe therefor - Google Patents

Abstract

PURPOSE:To remove the thermal strain developed in the desired portion of a large-sized structure by a method wherein a large number of metal block groups, which act as heat sinks, are joined to the effective portions on the surface of the structure so as to once absorb heat therein and the respective metal blocks are connected with one another by means of a heat pipe main body. CONSTITUTION:A plurality of metal blocks with favorable thermal conductivity 1-1-1-6 compose a heat pipe unit by slidably assembled onto a heat pipe 2. The metal block is equipped with a means to closely join a mating surface 101 to a body to be installed 13 with low thermal resistance such as thermal conductive grease. After the number of heat pipe units installed, the installation locations of the units, the number, kind and configuration of metal blocks and the like are determined, heat pipe units are arranged under the condition that the metal blocks are held in slidable state and, after that, installed temporarily. While the temperature distribution of a body to be installed and the state of thermal strain at the predetermined portion being measured, the metal blocks are slided so as to correct the locations of metal blocks. When the correction of the locations of the metal blocks is finished, the heat pipe units are perfectly fastened to the place.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is a unique property of a heat pipe that absorbs heat from a high-temperature part and releases heat to a low-temperature part, and operates to constantly equalize the temperature distribution in the container. Utilizes the temperature equalization property to reduce the temperature difference within the structure. ) This invention relates to a temperature distribution leveling method for leveling out unevenness in temperature distribution and eliminating problems caused by uneven distribution of heat, and a structure of a heat pipe unit for temperature distribution leveling for carrying out the method.

In particular, the present invention provides a new method that is most effective for leveling out the temperature distribution within the structure of large machine tools, precision machines, large measuring instruments, etc. in order to prevent a decrease in accuracy due to thermal distortion, and a method for implementing the method. A novel structure of a heat pipe unit is provided.

Conventional technology As modern devices become smaller and their parts become more highly integrated, various heat-related problems arise, and heat pipes' excellent heat conduction performance and heat equalization properties are used as a means to solve these problems. It's starting. In particular, leveling the temperature distribution is an extremely effective means that can be achieved by simply drilling a hole in the object to be inserted and inserting the heat pipe, depending on the effect of the heat equalizing property of the heat pipe. However, its range of use is extremely limited, including the problems that heat pipes have due to their woody nature, and in particular, the range of use of their heat equalization properties has been limited to small devices.

On the other hand, the precision of equipment is rapidly increasing in large machine tools and large measuring instruments, and in these cases, even relatively small temperature fluctuations and uneven temperature distribution within the structure, as well as relatively low changes in ambient temperature. This has caused problems due to large processing errors and measurement differences.

The excellent heat transfer and heat equalization properties of heat pipes are naturally effective for large PIri, but in the past, heat insulation was used to protect against heat dissipation, and heating of parts of the structure was passive to prevent distortion. In many cases, countermeasures are taken, and the use of heat pipes is hardly ever put into practical use.

Problems to be Solved by the Invention The reason why heat pipes are difficult to use in large structures is due to the following problems.

a. It is extremely difficult to cut a through hole for inserting a heat pipe into the object to be mounted.

Drilling an extremely large insertion hole with an inner diameter of about 40 ruA and a length L5 to 8 m is technically difficult and expensive, and is impractical.

b. Since Vv is extremely large, it is impossible to insert the heat pipe with a small clearance without degrading the performance of the heat pipe. In order not to significantly reduce the performance of the heat pipe, the clearance should be approximately 0. ] The length must be less than u and must be used in conjunction with thermally conductive grease, but the length is 5 to 8 m.
Clearance] Home rank is required.

It is difficult to press-fit the C1 heat pipe when the clearance is small. The heat pipe is usually made of pure mild steel or axial aluminum with a thickness of about IU. 0.4 u to improve heat transfer performance even in the case of stainless steel heat pipes
The heat pipe is too weak to overcome the friction of a length of 5 to ByL and press fit.

d. When inserting with a large clearance, low-temperature solder is usually injected to reduce thermal resistance, but it is only a few meters.
This becomes impossible in the case of a length of , or in the case of a large object to be inserted. This is because, in the case of a long heat pipe, the molten solder cools and solidifies due to the heat pipe's excellent thermal conductivity, making it impossible to inject.

In such a case, the Ai body to be inserted &-1 is heated to the melting point of the solder, but it is practically impossible to heat large equipment. Therefore, due to the thermal resistance of the large clearance, the performance of the single-drive pipe is completely lost.

θ, the heat equalizing property of the heat pipe is lost. Even if solder is successfully injected by some method, it will not be possible to inject the solder uniformly over the entire length of several layers.

Also, even if it is possible to insert the heat pipe with a relatively small clearance without injecting solder, the inner wall of the insertion hole and the heat pipe will not be in full contact with each other, and the contact pressure will be too low. It varies greatly depending on the location. In such cases, the heat pipe's excellent heat equalization properties cause partial heat absorption and partial heat radiation, and the dispersion in the temperature distribution is rather amplified, so the use of the heat pipe becomes a problem.

f. If insertion is difficult like this, either form the insertion hole of the object to be attached as a heat pipe, or insert and pressure-weld a container tube in advance by expanding the pipe with high-pressure liquid, and then form it as a heat pipe. However, it is impossible to transport thick mechanical structures to a heat pipe forming factory.
Furthermore, it is impossible to subject large structures to the various cleaning treatments necessary for heat pipes.

g. Although it is possible to equalize the temperature distribution when holes are directly drilled into the structure, it is impossible to make adjustments after the heat vip is inserted, and it takes a huge amount of cost and time to obtain the optimum conditions.

The present invention solves all of the problems in applying heat pipes to large structures as described above, and allows the excellent heat conduction and heat equalization properties of heat pipes to be applied between desired parts of large structures. A new temperature distribution leveling method that improves the accuracy of large processing machines and large measuring machines by reducing the temperature difference between and improving the temperature distribution and removing thermal distortion, and its implementation. The present invention provides a new structure for a heat pipe unit.

Means and operation for solving the problems The present invention relates to how to solve the problems a to f in the above-mentioned technical background. Therefore, the temperature distribution leveling method according to the present invention and the heat pipe unit for carrying out the same are constructed by combining the following solutions a through 1 as a basis.

Solution to item a: Instead of drilling holes in series with the structure, a group of metal blocks that act as a heat tank are glued to the effective part of the structure surface, and the metal blocks are allowed to absorb the heat.
Each metal block is connected by a heat pipe body to equalize the heat. Since the heat transfer is indirect, the thermal response is reduced, but it can be applied to complex structures that were previously impossible, i.e. leveling of hard bonds between discontinuous parts, curved structures and steps. It can also be applied between parts.

It is easy to handle design changes or mechanical improvements because no holes are drilled into the structure. Maintenance in the event of an accident is also easy. Many advantages are created, such as no negative impact on the strength of the structure.

Solution to item b: In order to provide a small clearance and facilitate insertion/extraction, we decided to divide the metal blocks into multiple groups. By making the length of the metal blocks less than 200 mm, the clearance was less than 0.005 mm. It becomes possible to

Solution to Item 0: It is easy to insert because it is divided into small blocks, and by applying thermally conductive grease on the fourth part when inserting it, it slides easily and can be easily moved to the desired position on the heat pipe body. Come out.

Solution for d term No soldering required.

Solution for item 0: Adhesion of the block and the object to be attached makes the adhesion surface of the block sufficiently wide. Fasten with strong pressure using strong screws, rivets, etc. Micro-gaps are filled using a combination of thermally conductive grease and adhesive. With these measures, the contact thermal resistance becomes close to zero, and the difference in contact thermal resistance between blocks becomes extremely small.

After the insertion work is completed, the block and heat pipe body are bonded together.
The clearance becomes zero due to the reduction of the block through hole, the expansion of the heat pipe body, etc., and there is no need to consider contact thermal resistance. In special cases, when it is not possible to expand the wire hole or pipe, if the clearance is filled with a thermally conductive adhesive, the thermal resistance will be extremely small if the clearance is 0.05a or less. Since the thermal resistance can be made small in this way, the heat equalizing property of the heat pipe is not lost.

Method for solving the f term As described above, the problems in each term can be solved by dividing the metal block. However, in order to completely equalize the temperature distribution, it is necessary to ultimately reduce the clearance between the through hole of the block and the heat pipe body to zero. However, as mentioned above, it is impossible to bring a large machine into a heat pipe manufacturing factory, so the expansion work of the heat pipe body must be carried out at the machine assembly site or installation site. Furthermore, the heat pipe has an extremely fragile structure, and it is extremely difficult to transport the heat pipe to the installation site without deforming it at all. Therefore, in order to recover from the deformation during transportation, expanding the pipe in the final process or reducing the through holes in the entire area block is an important process.

In the present invention, we propose an application of %0 1982-191015 (heat pipe insertion method) or patent application 1982-128178 (heat pipe insertion method) that the inventor previously proposed as a heat pipe expansion method. do. This is a main container that is inserted into a through hole in a group of metal blocks, and a sub-container connected to it by a thin metal tube. It is used as a heat pipe for the unit. It is an application of the patent application No. 56-19 ] 0 ] 5 that the secondary container is crushed and the main container is expanded by the high liquid pressure generated in the main container and brought into pressure contact with the metal block, and the secondary container is heated. The patent application was filed on January 28, 1982, in which the hydraulic fluid is expanded, thereby generating high hydraulic pressure within the main container, causing the main container to expand and press against the metal block.
This is an application of 1.78. After the pressure welding is completed, the restraint on the main container is released while heating the sub-container, and the excess hydraulic fluid in the main container is discharged by the steam pressure of the sub-container.
After republishing the primary container, remove the secondary container.

In the present invention, as a means for reducing the inner wall of the through hole of the metal block, it is proposed that the metal block be purchased as a combination of small blocks. The through holes are formed by grooves provided on the combined surfaces of the small blocks, and are formed to have a diameter smaller than the outer diameter of the heat pipe, so that the strong pressure applied when the final block and the object to be attached are fastened is reduced. The inner diameter is reduced and the heat pipe is brought into pressure contact with the heat pipe body.

When a combination block is used, a normal heat pipe body is used as the heat pipe body.

Should you adopt the pipe expansion method or the through hole reduction method?
Alternatively, it may be arbitrarily determined whether to use both methods together depending on the situation of the applied structure.

Solution for item g Item g is the second biggest drawback of the conventional method of directly drilling a hole in the structure and inserting the heat pipe body, and it requires repeated manufacturing of the structure each time by trial and error regarding the drilling position and depth. I needed to give it back. In the cough device of the present invention, the number of units installed, the positions in which they are installed, etc. can be freely changed and modified. Furthermore, the position of the metal block,
A major advantage of the present invention is that the temperature distribution can be precisely set by increasing or decreasing the number. However, until the adhesion and fitting of each part is finally completed, the thermal resistance of each part is approximate, so the temperature distribution is also approximate. In order to bring the approximate set temperature distribution closer to the final state, apply thermally conductive grease to the clearance and adhesive parts to equalize and adjust the thermal resistance of each part.

When pipe expansion is carried out using a sub-container, the sub-container is used as a heat pipe to implement the present invention as a reserve tank until the temperature distribution adjustment is completed, and then the main The entire internal volume of the container and sub-container is filled with clean hydraulic fluid and fixed, and then the pipe is expanded and fitted.

Other constituent elements We propose the following elements as other secondary constituent elements.

1) A metal block with heat dissipation fins is mixed with the metal block group and used in high temperature areas to facilitate temperature distribution.

11) A temperature control device or heating device is installed in a part of the heat pipe body to maintain the temperature of the inserted object above a certain temperature.When the ambient temperature is very low in winter, etc., the temperature and heat generation of each part of the structure There is a large temperature difference between the heat pipe body and the heat pipe body, and there is a risk that a small amount of heat generation may cause large thermal distortion.Furthermore, depending on the type of heat pipe body, it may not operate at low temperature or the % thermal resistance may be extremely poor. In such a case, it is necessary to maintain the temperature of the structure above a certain temperature so that the temperature distribution leveling heat pipe unit can operate normally.

111) By using a tube expansion prevention ring in combination, and by covering unnecessary parts during tube expansion with a strong ring group or tube group to prevent tube expansion, a sufficient amount of liquid is sent to the tube expansion part and sufficient hydraulic pressure is applied.

lv) Combined use of a stopper for preventing pipe expansion in the length direction During pipe expansion work, the heat pipe main body is also extended in the length direction.

If tube expansion in the length direction is prevented with a stopper, the rate of tube expansion in the diametrical direction can be increased.

The temperature distribution leveling method and the heat pipe for implementing the method according to the present invention consist of a combination of the above-mentioned solutions and components.

Step-by-Step Structure The temperature distribution leveling method according to the present invention consists of the following seven steps, regardless of the order of the steps.

Step 1 Form a surface for contacting on one side of each of the plurality of metal blocks, and form a predetermined number of fastening through holes for pressurizing and adhering the adhesive surface to the temporary mounting surface, and A heat pipe insertion through hole is formed, and a predetermined heat pipe is slidably inserted into the insertion through hole to form a temperature distribution leveling heat pipe unit.

Step 2: Fill the sliding space between the outer wall of the heat pipe and the inner wall of the through hole with grease having good thermal conductivity, and also apply grease to the surface of the heat pipe within the movement range of the metal block.

Step 34: The number and arrangement of heat pipe units to be mounted are determined and prepared according to the structure, heat generation amount, and heat generation position of the mounting body.

Step 84: According to the determined arrangement, the heat pipe unit is placed while maintaining the metal block in a sliding state, and the metal block is temporarily fastened in a position determined to be appropriate.

Step 5 While measuring the temperature distribution state of the object to be attached and the thermal strain state of a predetermined part, slide the metal block to correct its position, and if necessary, increase or decrease the number of metal blocks used to adjust the temperature difference. , correct the temperature distribution state.

Step 6: Once it is confirmed that the temperature difference, temperature distribution, amount of thermal strain, etc. have been corrected within predetermined limits, the metal block is firmly fastened to the object to be attached at that position and IG is established.

Step 7 Depending on the expansion of the heat pipe container, the height of the heat pipe can be increased by adhesion with a thermally conductive sacrificial material, collapse by three means, or a combination of methods. and the metal block are fixed in close contact with each other.

Structure The structure of the heat pipe unit for leveling temperature distribution according to the present invention is as follows.

A unit consisting of a combination of a number of metal blocks made of a predetermined metal material with good thermal conductivity and formed to a predetermined shape and dimensions, and a heat pipe body having a predetermined cross-sectional shape and dimensions, These metal blocks are formed with an adhesive surface having an adhesive means that can tightly adhere the unit to the attachment plane of the object to be attached with low thermal resistance, and have a predetermined cross-sectional shape and The heat pipe body has a predetermined length corresponding to the object to be attached, a predetermined cross-sectional shape corresponding to the through-hole of the metal block, and a predetermined length and a predetermined cross-sectional shape corresponding to the through-hole of the metal block. The outer wall and the inner wall of the metal block are inserted into the x-shaped hole with a minute gap of 8 degrees between the outer wall and the inner wall of the metal block, which allows the metal block to slide against each other. The structure of one or both of the heat pipe bodies is such that after the unit is attached to the object to be attached, the outer wall of the heat pipe body is enlarged or the inner wall of the passage hole is reduced, while the unit is in the attached state. The structure is such that a means is provided for reducing the minute gap to zero and fixing the two to each other at a low level.

Embodiments FIGS. 1 to 61Δ show various embodiments of the temperature distribution leveling method and the heat pipe unit for leveling the distribution according to the present invention. Leveling method Since the leveling heat pipe will always be used in the next implementation, the explanation will be made for both at the same time. FIG. 1 shows an embodiment in which the plane of the structure to be implemented is horizontally installed, and FIG. 2 is a partial or whole sectional view showing an example in which the structure is installed vertically. 3, 4, and 5 are cross-sectional views of various metal blocks constituting the unit, and FIG. 6 shows another embodiment of mounting the heat pipe unit.

In the figure, 1 is a metal block with good thermal conductivity, and a plurality of metal blocks 1-1.1-2 to 1-6 are combined with a heat pipe main body (hereinafter referred to as a heat pipe) 2 to form a heat pipe. It is composed of units. The vertical cross-sectional shape of each metal block is shown in FIGS. 1 and 2, and the cross-sectional shape is shown in FIGS. 3 to 5. The basic structure of the metal block is as shown in FIGS. 3 to 5, in which a through hole 3 for inserting a heat pipe is formed, and an adhesive surface 01 is formed. Forming a heat pipe unit for temperature distribution leveling is the first step in the temperature distribution leveling method. At this point, a clearance is provided between the through hole 3 and the heat pipe 2 in which the metal block can slide when inserted into the heat pipe. The smaller the clearance, the better in order to improve the accuracy when adjusting the temperature distribution in the later process, and it needs to be able to slide freely in order to adjust the row position and the number of pieces installed.

For this reason, the metal block is divided into small counting blocks, and the smaller the ratio VD of the length of the metal block through hole to the heat pipe diameter, the smaller the clearance and the easier sliding. be. If the metal block is long and L7'v is large, even if the clearance is made large, 'f# movement and insertion/extraction will be difficult, and the present invention is implemented in Implementation 4.
It becomes 1-cho Noh. In practical terms, metal blocks have through holes that correspond to several standardized types of heat pipes, and are formed into several standardized lengths.
The one that has been produced and has a low 1lIII@ concentration is used. Also, the adhesive cloth 101 is attached to the metal block to be gs body i3. +3-1
．． 13-2 is provided with means for tightly bonding with low thermal resistance. In the embodiment diagrams, the bolts 5 are 5-1, .
The metal blocks are fastened with screws as shown in 5-2 to 5-6, and the metal blocks are provided with tribute holes for fastening as shown in Figures 3, 4, and 5, 4.4- a, 4-b are provided. The method is carried out by applying a thin layer of thermally conductive grease, adhesive material, etc. to fill in the uneven parts.The fastening means 6 is not necessarily limited to screw fastening, but may also be fastened with rivets, or it can be carried out using separately attached accessories. It is also possible to use FA fastening using a metal block.Therefore, negative through hole 4 is a useful bonding method for metal blocks.
It is not limited to. In addition, if the potency of temperature distribution leveling is low, it may be sufficient to bond only with a thermally conductive adhesive.

Temperature distribution adjustment method according to the present invention In the next second step, the number and mounting position of the heat pipe units constructed as described above, the number, type, arrangement, etc. of metal blocks are determined.

These include the amount of heat generated by the inserted object, the position of heat generation, the amount of thermal strain generated,
The temperature distribution is determined by measuring and analyzing the location of the occurrence, the temperature distribution of the object to be attached, etc., and taking into consideration the performance of the temperature distribution leveling heat pipe unit. For the heat pipe unit, is it sufficient to use a multi-sand unit in order to equalize the temperature distribution of the entire structure of the attached object? A part that has no effect on the performance of the attached object even if it is transferred [There are cases where the purpose is achieved by transferring
This step is an extremely important step in the process of implementing the present invention, as the objective may be achieved simply by equalizing the temperature between two parts, which at first glance has no relation to performance.

In the third culm following the vortex layer distribution leveling method, grease with good thermal conductivity is filled in the small sliding gap between the through hole 4 and the heat pipe 2, and also within the sliding range of the metal block. Apply grease. Kneading is a process to facilitate sliding of the blocks when determining the position to fix the metal blocks, and to reduce adjustment errors by reducing the thermal resistance of each block and equalizing the temperature during temperature distribution A. be.

The fourth step, which follows the temperature distribution leveling method, is the temporary mounting step of the heat pipe unit and metal block, in which the heat pipe unit is placed according to the arrangement determined in the second step while maintaining the sliding state of the metal block. Temporarily put it on. Since the heat pipe can be bent freely, if it is not given a certain straightness, it will be impossible to slide the metal block, making it difficult to adjust the temperature distribution. In the case of the illustrated embodiment, temporary fastening may be performed using thin, shallow screws or the like. Figure 1 shows an example of a heat pipe arranged horizontally, and the fastening surface may be a uniform plane, or it may have a groove that prevents the metal block from being fastened, as in the case of Figure 13-1. 1 and 13-
There are cases where it is necessary to equalize the temperature between surfaces that are completely separated, such as in case 2. Figure 2 shows an example of vertical arrangement,
This illustrated example is an example of temperature variation between two planes with a difference in level.

As shown in Figure 2, when there are steps on the plane to be leveled, or even on the same plane, the axis in the direction of erosion! 4a If the bending direction is different, the heat pipe may be bent, but for the parts that require bending, use a corrugated pipe (called a beaded pipe) in the container as shown in Figure 2-2. If a beat pipe unit using a flexible heat pipe is used, it is easy to assemble and adjust the temperature distribution fA.

Further, in the embodiment, the metal blocks are provided with @-connecting devices, but they may be arranged at intervals depending on the distribution of the heating pads. Furthermore, although the embodiment uses flocks of the same length, it is actually possible to reduce the price per unit by using a combination of blocks of various lengths and short lengths.

The fifth step, which follows the vortex layer distribution leveling method, is to measure the temperature distribution of the object to be mounted, and while measuring the thermal state of a predetermined part, slide the metal block and correct the position of the metal block. ,
If necessary, this is a process in which the number of metal blocks used is increased or decreased to correct the occurrence of temperature differences, temperature distribution, etc., and approximate the desired state. Therefore, even though the heat pipe unit is only temporarily attached, the thermal resistance between the adhesive surface 101 of the metal block and the adhesive surface of the object to be attached and the thermal resistance between the metal block and the inserted portion of the heat pipe are as small as possible. At the same time, it is desirable that the thermal resistance between each metal block is also equalized.

Therefore, it is desirable to apply a grease with good thermal conductivity to the bonding part for temporary bonding. Furthermore, this grease is a low-viscosity grease that can be easily pressurized and discharged when fastening. It is desirable that the metal block be equipped with a group of heat dissipating fins as the metal block on the high temperature side in order to facilitate adjustment in this step. An example is shown, and 1-f is a group of radiation fins.Since this group of fins is provided in parallel along the heat pipe, in the case of natural convection heat radiation, it effectively acts on units arranged vertically. Although not shown, for a heat pipe unit horizontally arranged on the side of a structure, it is desirable to use a metal block in which fin groups are attached in a direction perpendicular to the heat pipe axis.

The sixth step, which follows the temperature distribution leveling method, is the complete fastening step of the metal blocks. The temperature distribution is approximately corrected to be within a predetermined range, and when it is estimated that the thermal strain is within the limit, the bolts are completely fastened in a predetermined manner at that position. In this case, if the to-be-attached body 5 emits or receives vibrations, a thermally conductive adhesive may be used in combination. If the object to be inserted cannot be fastened with screws, rivets, or wedges, brazing, solder bonding, bonding with thermally conductive grease, etc. may be used.

The seventh step, which follows the temperature distribution leveling method, is the final step and is the step of tightly fixing the heat pipe and the metal block in an N layer.The heat pipe is expanded and fitted, or the through hole of the metal block is This is carried out by reducing the size and fitting it, or by fixing it with a thermally conductive adhesive, or by any one or a combination of these three methods. Figure 2 shows an enlarged heat pipe.
An example of a possible structure is shown below. The heat pipe 2 is provided with a sub-container 6 which is connected to the main container 2 and the thin metal tube 8. Numerals 9-1 and 9-2 are thin tubes for injecting and discharging hydraulic fluid, and these are tightly inserted to fill the entire volume of the container with clean hydraulic fluid. In a heat pipe container configured in this way, when the sub-container is crushed by a portable pressurizer, a high pressure corresponding to the crushing pressure is generated in the main container, and the main container is expanded, causing the metal block to collapse. Vc5E is deposited inside the through hole, and Vcl is firmly deposited.

As another method, when the sub-container is heated to a predetermined temperature, the working fluid within the sub-container expands and enters the main container, generating high hydraulic pressure within the main container.

The main container is expanded by this hydraulic pressure and fitted into the through hole of the metal block. At this time, the thermally conductive grease that was removed in the second step is discharged due to the high pressure bonding force.

Since the viscosity of the grease provides a considerably large resistance to the pressure bonding force, the heat pipe may be removed and the grease removed before carrying out this step.

The filling of the working fluid in the seventh step is carried out after the completion of the sixth step, and before the sixth step, the working fluid is adjusted so that it operates as a normal heat pipe. - When the dopipe is rotated (A), the temperature of the sub-container is kept above the boiling point of the working fluid, and the seal of the working fluid pressure outlet U is released. Then, the operation of the main container is controlled by the atmospheric pressure of the G1j container. begins to be expelled outside.

After that, with the necessary working fluid remaining as a heat pipe, the thin pipe 9-1 for injecting and discharging the working fluid and the connection line R8 are stopped at the position closest to the main container, and then The seventh step is completed by cutting both capillaries and removing unnecessary capillaries and sub-containers. When fitted in this manner, the abutting portions of the heat bike and the metal block can be in such good pressure contact that contact thermal resistance can be ignored. FIG. 1 shows a state in which such expansion and fitting of the pipe is completed. When pipe expansion is carried out in this way, parts of the container that are not inserted into the metal block may also be expanded, reducing pipe expansion efficiency. The tube expansion efficiency can be increased by covering the group of tube expansion prevention rings formed by
13 in the figure indicates a tube expansion prevention ring.

Furthermore, during pipe expansion, the container may also be expanded in its length direction, reducing pipe expansion efficiency. In such a case, a stopper for preventing longitudinal tube expansion can be provided to increase the efficiency of diametrical tube expansion. Figure 10 shows a metal block provided with such a stopper 11. When installing such a metal block with a stopper, it is necessary to install it at both ends of the heat pipe unit.
-1.12-2 By increasing the number of fastening bolts, etc.
It is a good idea to strengthen the holding power of the metal block.

Another method for fitting the heat pipe and the metal block is to reduce the inner diameter of the through hole in the block. In that case, replace the gold bullion block with the small block 1-a in Figure 5.]
-1) is divided and combined and used. In this case, the through hole 3 is also formed by a combination of grooves 3-a, 3-b provided in the combined surface of each small block 02, and the inner diameter of the through hole 3 is such that the heat pipe can be tightly fitted therein. It is formed smaller by the reduction in the inner diameter for fitting. Therefore, the work is carried out without being completely fastened until the fifth step is completed. The sliding of the metal block in the fifth step is performed by loosening or strengthening the fastening to make it slide, and after the temperature distribution adjustment is completed, the final maximum fastening force is applied to fasten and fix the block. In this case, the completion work of the sixth process coincides with the seventh process, so the sixth process and the seventh process will be executed simultaneously. This method has the advantage that it shortens the process by one step and the structure of the heat pipe is similar to a normal heat pipe and is simple, but the structure of the metal block is complicated and expensive. There are drawbacks to it. In this case, if screw fastening using bolts is used as the fastening means, the small block 1- as shown in Fig. 5 4-a and 4-b.
By providing a common screw through hole that is connected to a and lb in the combined state, the small blocks can be combined and fastened to the attached body at the same time.

The temperature distribution adjustment and temperature difference adjustment in the fifth step often takes a long time if the structure of the object to be mounted is large. Therefore, there may be a large difference in ambient temperature, for example, between morning and afternoon, daytime and nighttime. Additionally, the ambient temperature may vary greatly depending on the season. However, in the case of precision mechanical devices and measuring devices, they are often assembled and used in an air-conditioned atmosphere, and in many cases there is no need to pose a problem.

The temperature difference between the ambient temperature during adjustment in the fifth step and the ambient temperature when the object to be attached is in use may cause a large deviation in the temperature distribution in the object to be attached or the temperature difference between predetermined portions. Furthermore, depending on the type of heat pipe, performance may deteriorate or operation may become difficult at low temperatures below 20'C. In this case as well, there is a risk that the temperature i distribution will change drastically. In such a case, a temperature adjustment device or a heating device is attached to a part of the heat pipe, and the temperature of the object to be attached is adjusted via the heat pipe unit, while temperature distribution adjustment and temperature difference are performed in the fifth step. It is advisable to carry out adjustments. In addition, the ambient temperature conditions under which the object to be attached may be used may be specified. In such a case, it is also necessary to adjust the temperature of the mounted body to a temperature corresponding to the specified ambient temperature and adjust the temperature distribution after the heat pipe unit is mounted. In addition to using a temporary temperature control device or heating device to carry out the fifth step, the heat pipe unit according to the present invention can be permanently attached to the object to be attached as a component to adjust the temperature during use. By precisely matching the distribution with the temperature distribution adjusted when the heat pipe unit is attached, it is possible to improve the processing accuracy and measurement accuracy of the attached object. Reference numeral 7 in FIG. 1 indicates the A degree adjusting device or the heating device.

Effects of the Invention The temperature distribution leveling method according to the present invention, which is carried out by using the heat pipe for temperature distribution leveling according to the present invention having the structure as described above, is suitable for large device structures and large measuring devices. This allows the application of heat pipes, which has been considered difficult, to be easily implemented, and completely eliminates the need for temperature distribution adjustment methods, which have conventionally been implemented at a huge cost by combining various methods such as insulation, cooling, and heating. In addition to eliminating the need for heat pipes, there is no need to make major design changes to the equipment, unlike in conventional heat pipe applications where holes are drilled directly into the structure and heat pipes are inserted. Compared to the case where it was impossible to change or adjust the temperature distribution later, it becomes possible to freely change the temperature distribution, and the effect is extremely large. In addition, the conventional temperature distribution adjustment method for applying heat pipes was to directly insert and drill holes into the structure, making it difficult to reduce thermal resistance and resulting in poor performance. Block, metal block and attached object,
Since the contact thermal resistance of falling can be made negligibly small, high performance can be achieved. Furthermore, the conventional insertion method has difficulty dealing with steps and curved bodies, but the fact that it makes it possible is also of great utility value. In addition, whereas the conventional method required individual design for each connected object, metal blocks are standardized small blocks, so mass production is possible. Since it is possible to use any mounting object vcB just by combining the blocks, it is of great value in terms of shortening the production schedule and lowering the production cost.

Although the present invention has been described using an embodiment of large-sized equipment, the scope of application is not necessarily limited to large-sized equipment. If it is not possible to directly insert a heat pipe into a small device, the heat pipe unit according to the present invention can be used to level out the temperature distribution.

[Brief explanation of the drawing]

1 and 2 are partial cross-sectional views showing an embodiment of the temperature distribution leveling method according to the present invention and a heat pipe unit used for carrying out the method, and FIGS. 3, 4, and 5 are respectively according to the present invention. FIG. 6 is a sectional view showing an example of the structure of a metal blower, which is one of the constituent elements. 1.1-1 to 1-6...metal block, 2...heat pipe, 3 through hole, 4...through hole for fastening, 5゜5-
1 to 5-6 Bolts, screw fastening parts, 6... Sub-container. 3 figure 4 figure 5 figure 6 figure

Claims (9)

[Claims] (1) Maintaining temperature differences between consecutive parts or mutually distant parts of structural parts such as mechanical devices and precision measuring devices within a predetermined temperature difference, and leveling the temperature distribution to a desired distribution state. In the temperature distribution leveling method, which is carried out by applying the heat equalizing characteristics of a heat pipe in order to maintain the amount of thermal strain within a predetermined range by A temperature distribution leveling method characterized by the following. Step 1: Form an adhesive surface on one side of each of the plurality of metal blocks, form a predetermined number of fastening through holes for pressurizing the adhesive surface to the surface to be attached, and heat the adhesive surface parallel to the adhesive surface. forming a pipe insertion through hole, and slidably inserting a predetermined heat pipe into the insertion through hole to form a heat pipe unit for leveling temperature distribution; Step 2: Structural calorific value of the attached body; , Deciding and preparing the number and arrangement of heat pipe units to be installed according to the heat generating position; Step 3 Applying grease with good thermal conductivity in the small sliding gap between the outer wall of the heat pipe and the inner wall of the through hole. At the same time as filling, grease is also applied to the surface of the heat pipe within the sliding range of the metal block. Step 4: According to the determined arrangement, the heat pipe unit is placed while maintaining the metal block in a sliding state, and the heat pipe unit is placed almost appropriately. Temporarily fasten the metal block at the determined position. Step 5: While measuring the temperature distribution state of the object to be attached and the thermal strain state of a predetermined part, slide the metal block to correct its position, and then tighten the metal block. Adjust the temperature difference between predetermined parts and the temperature distribution state of the object to be attached by increasing or decreasing the quantity of If so, firmly fasten or fix the metal block to the object to be attached at that position. Step 7: Fit by expanding the heat pipe container or by reducing the through hole of the metal block. tightly adhesively fixing the heat pipe and the metal block by bonding, fixing with a thermally conductive adhesive, or using any of these methods or a combination of these methods; (2) There are only two bonding positions for the metal blocks in one unit: the high-temperature part of the object to be attached and the low-temperature part that will not cause any trouble even if the temperature is increased, and the intermediate part between the two parts is made of metal. The temperature distribution leveling method according to claim 1, wherein no blocks are arranged. (3) A unit consisting of a combination of a plurality of metal blocks made of a predetermined metal material with good thermal conductivity and formed into a predetermined shape and dimensions, and a heat pipe body having a predetermined cross-sectional shape and dimensions. The metal block is formed with an adhesive surface having an adhesive means capable of closely adhering the unit to the attachment plane of the object to be attached with low thermal resistance, and has a penetration having a predetermined cross-sectional shape and dimensions. A hole is formed parallel to the adhesive surface and at a predetermined distance, and the heat pipe body is formed to have a predetermined length corresponding to the object to be attached and a predetermined cross-sectional shape and dimensions corresponding to the through hole of the metal block. At the same time, a minute gap is provided between the outer wall and the inner wall of the metal block to allow them to slide against each other, and the metal block is inserted into the through hole. , or for both structures, after the unit is attached to the object to be attached, the outer wall of the heat pipe main body is expanded while the unit is in the attached state,
1. A heat pipe for leveling temperature distribution, characterized in that a means is provided for reducing the inner wall of the through hole to reduce the minute gap to zero and for fitting and fixing the two to each other. (4) Each metal block is provided with a through hole for inserting and fitting the heat pipe body, and is also provided with a predetermined number of fastening through holes of a predetermined diameter for tightening screws or rivets as a bonding means for the adhesive surface. The heat pipe for leveling temperature distribution according to claim 3, characterized in that: (5) The heat pipe body is provided with a sub-container as a means for fitting and fixing the heat pipe body and the metal block after the unit is installed, and both the main container and the sub-container are filled with working fluid. After the unit is installed, high fluid pressure is generated in the main container by heating or crushing the sub-container to expand the pipe, and the volume of working fluid can be adjusted after that. A heat pipe for leveling temperature distribution according to claim 3. (6) As a means of fitting and fixing the heat pipe body and the metal block after the unit is installed, each metal block is a combination structure of two small blocks, and the combined surface of each small block has a , a groove is formed in which a through hole into which the heat pipe body is fitted is formed depending on the combination;
In addition, both of the small blocks are configured to have a structure that allows the heat pipe body to be press-fitted and simultaneously combined and integrated by screwing or riveting. A heat pipe for leveling temperature distribution as described in . (7) The plurality of metal blocks constituting the unit are arranged in a mixed manner, with some having a group of radiation fins and others not having a group of radiation fins, corresponding to the required temperature distribution. The heat pipe for leveling temperature distribution according to claim 3, characterized in that: (8) The heat pipe for leveling temperature distribution according to claim 3, wherein a temperature control device or a heating device is combined with a part of the heat pipe main body. (9) The heat pipe for leveling temperature distribution according to claim 3, wherein a part of the heat pipe main body is constructed using a flexible heat pipe main body formed of a corrugated container.