JP3359555B2 - Heat pipe, method of manufacturing heat pipe, and method of using heat pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a heat pipe,
And a method of manufacturing the heat pipe, and a method of using the heat pipe.

[0002]

2. Description of the Related Art Hitherto, various methods of using heat pipes, which have excellent heat transfer characteristics, can keep the heat source temperature low, and have low fuel consumption, have been proposed.

[0003] A heat pipe is generally constructed by enclosing an appropriate amount of a heat medium fluid in a vacuum metal pipe. When one end of the heat pipe is heated, the heat medium fluid in the pipe evaporates. The heating medium flows as a vapor stream to the other end, condenses in contact with the tube wall, and the condensed heat medium fluid is returned to one end side by gravity and heated again to repeat the cycle.

[0004] As described above, the heat pipe continuously transfers heat from the high-temperature portion on one end of the pipe to the low-temperature portion on the other end by repeatedly evaporating, moving, condensing, and refluxing the fluid for the heat medium. I have to.

However, at present, such heat pipes have not yet been applied to the agricultural field.

For example, when heating a greenhouse or an agricultural house such as a vinyl house, a hot air heating system using a hot air heating device using a boiler or the like has been mainly used.

In general, a hot air heating device X shown in FIG. 28 is used. The hot air heating device X is a heat source device comprising an oil-fired burner or the like outside the agricultural house 100.
In this configuration, a duct 400 is extended from the heat source device 200 into the agricultural house 100 via a blower 300.

In the field of agriculture, there is a method of disinfecting the soil with heat, in addition to the heating of the agricultural house 100, which has attracted attention as an alternative to the chemical disinfection method generally used in the past.

That is, it has been found that methyl bromide, which has been widely and generally used in the conventional chemical disinfection method, causes ozone layer destruction, and is going to be unusable in the future. Chlorpicrin has been used.

[0010] This also has disadvantages such as inferior effects at low temperatures, ineffectiveness against viruses, and a long processing time. In addition, recently, adverse effects on the human body and even contamination of groundwater have become problems. From such circumstances, soil heat treatment and steam disinfection have been attracting attention as soil disinfection methods that do not cause pollution.

[0011]

However, the following problems remain in the hot air heating device X, the soil heating treatment, and the steam disinfection method.

That is, in the hot air heating apparatus X, the oil combustion type causes pollution in the agricultural house 100, and the hot air is forcibly sent. There was a possibility that the crop itself might be adversely affected.

In recent years, a hot water circulation system in which hot water is circulated using a boiler has been proposed. However, since the temperature effect of hot water as a heat source is large, a large difference in the amount of heat radiated between the inlet and the outlet of the pipe. Occurs. Therefore, in order to obtain a predetermined heat radiation amount at the pipe outlet, the temperature of the hot water must be raised, and the fuel cost is accordingly high.

Further, the soil heat treatment and the steam disinfection method require a large investment in equipment such as a large boiler, and it is difficult for general agricultural workers to adopt the method.

Therefore, the present applicant has focused on a heat pipe and tried to apply it to the agricultural field.
As described above, the conventional heat pipe has a configuration in which the heat medium fluid that has been evaporated and condensed is recirculated by gravity. If such a shape is required, a gradient for recirculating the heat medium fluid is absolutely necessary, and the point that such a gradient is required makes it difficult to apply the heat pipe to the agricultural field.

That is, in the heating of a greenhouse or a greenhouse, the heat pipes must be provided over a long distance. If the heat pipes are to be used for disinfecting soil in a field, the heat pipes must be provided uniformly over a wide area. There must be.

However, if a gradient is required to dispose the heat pipe, there is a limit to extending the heat pipe.

[0018] Even in the case of soil disinfection, it is efficient to lay the heat pipe in a lying state in the soil, but it is difficult to extend the heat pipe as described above.
If there is a gradient, the height between the pipe and the ground surface naturally changes gradually in the direction in which the heat pipes are arranged, and therefore the amount of heat transferred to the soil varies from place to place.

An object of the present invention is to provide a heat pipe capable of solving the above problems, a method for manufacturing the heat pipe, and a method for using the heat pipe.

[0020]

In order to solve the above-mentioned problems, according to the present invention, there is provided a vacuum pipe in which a fluid for a heat medium is sealed and a vacuum pipe which is inserted close to an inner peripheral surface of the vacuum pipe. And a heat source pipe. Therefore, the heat medium pipe efficiently heats the heat medium fluid as a whole,
The heat transfer efficiency can be improved, and the heat pipe can be arranged in a horizontal state, so that the use of the heat pipe can be expanded.

According to the second aspect of the present invention, when the heat source pipe is disposed horizontally with the heat source pipe located at the bottom side of the vacuum pipe, the heat source pipe is immersed in the heat medium fluid, and A vapor retention space is formed above the heat source pipe. Therefore, the amount of the heat medium fluid to be filled is the minimum amount with respect to the required heat amount, and if the amount of the heat medium fluid is adjusted by changing the size of the vacuum pipe, the heat transfer amount can be easily adjusted. I can do it.

According to the third aspect of the present invention, the heat transfer pipe comprises a vacuum pipe and a heat source pipe penetrating substantially the center of the vacuum pipe and having a heat transfer plate vertically suspended over substantially the entire length. The structure was such that the fluid for the heat medium was sealed in the vacuum pipe until it was immersed. Therefore, the heat transfer efficiency is improved because a small amount of the heat medium fluid is required.

According to a fourth aspect of the present invention, the ends of the heat source pipes are respectively protruded from the respective closed end faces of the vacuum pipe, and the ends are detachably connected to each other via a joint member to extend them. Made it possible. Therefore, the length can be freely adjusted according to the required length, and the degree of freedom in layout is significantly improved.

According to the fifth, first and third aspects of the present invention, a cap body having a heat source pipe insertion tubular body inserted therein is attached to the opening of the pipe body whose one end is closed. Inserting the heat source pipe into the heat source pipe insertion cylinder, penetrating the closed end of the pipe body to seal the penetrating portion, and further closing the open end of the heat source pipe in the heat source pipe insertion cylinder, Thereafter, the inside of the pipe is evacuated and decompressed from the heat source pipe insertion cylinder, and a heat medium fluid is introduced, and then the space between the heat source pipe insertion cylinder and the heat source pipe is sealed. Therefore, it is easy to arrange the heat source pipe in the vacuum pipe.

According to the sixth aspect of the present invention, the first aspect is provided.
The heat pipe according to any one of (1) to ( 4 ) is horizontally disposed in the soil such that the heat source pipe is located on the bottom side of the vacuum pipe, and the soil is heated to disinfect it. Therefore,
Soil disinfection can be performed effectively at low cost by using heat pipes with good heat transfer efficiency.

According to the seventh aspect of the present invention, the first aspect is provided.
The heat pipe according to any one of (1) to ( 4 ) is disposed horizontally on the inner surface of the agricultural house so that the heat source pipe is located on the bottom side of the vacuum pipe, and the inside of the agricultural house is heated. Therefore, the heat pipe with good heat transfer efficiency can effectively heat the inside of the agricultural house at low cost.

[0027] According to the present invention as set forth in claim 8 , in claim 1,
The heat pipe according to any one of (1) to ( 4 ) is horizontally disposed on a planting tray such that the heat source pipe is located on the bottom side of the vacuum pipe. Therefore, by using such a tray mounted on a table or the like, the farmer does not need to bend over to the field to perform farming work as in the related art, thereby improving workability and reducing the burden.

According to the ninth aspect of the present invention, a concave portion for disposing a heat pipe is provided at the bottom of the planting tray, and the heat transfer plate is provided so as to cover the inner peripheral surface of the planting tray. The heat transfer plate was placed in contact with a heat pipe provided in the recess. Therefore, the whole soil in the planting tray can be efficiently heated.

According to the tenth aspect of the present invention, the above-mentioned claim is provided.
The heat pipe described in any one of 1 to 4 is arranged horizontally below the floor of the house such that the heat source pipe is located on the bottom side of the vacuum pipe. Therefore, effective floor heating can be performed with low fuel consumption.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a vacuum pipe filled with a heat medium fluid, in which a heat source pipe is inserted in close proximity to the inner peripheral surface of the pipe. It has a pipe.

As the vacuum pipe and the heat source pipe, materials having high thermal conductivity, for example, metal pipes such as copper, iron, aluminum, and stainless steel can be suitably used, and pipes made of synthetic resin can also be used.

As the heat medium fluid, alcohol-based fluids such as ethanol and methanol, or fluids mixed with silica gel can be suitably used.

Further, a heater wire may be provided in the heat source pipe, or hot water, oil or the like may be circulated to serve as a heat source.

When the heat source pipe is disposed horizontally in a state where the heat source pipe is located at the bottom side of the vacuum pipe, the heat source pipe has a diameter such that it is immersed in the heat medium fluid. A vapor retention space is formed above.

Therefore, the heat medium fluid can be efficiently heated by the heat source pipe as a whole, and the heat medium fluid is heated and vaporized, and the generated vapor rises in the vapor retention space to be a pipe of the vacuum pipe. The cycle of cooling, liquefying and refluxing downward in contact with the wall is repeated. Since the distance between the liquid surface of the heat medium fluid and the top pipe wall of the vacuum pipe can be very short, the cycle is performed in a very short time, so that the entire vacuum pipe is heated in a short time, The heat transfer efficiency can be improved, and the tube wall temperature of the heat pipe can be increased uniformly and quickly.

The amount of the heat medium fluid to be filled can be minimized with respect to the required heat amount, and the heat transfer amount can be easily adjusted by adjusting the amount of the heat medium fluid by changing the size of the vacuum pipe. In addition, even if the amount of the heat medium fluid is increased, the size of the heat source pipe is hardly changed, so that the cost can be reduced as much as possible.

As the structure of the heat pipe, in addition to the above, for example, a vacuum pipe filled with a heat medium fluid,
A configuration may be adopted in which a heat source pipe is coaxially mounted on the outer peripheral surface of the vacuum pipe. In this case, since the heat source pipe is easily disposed, production efficiency can be improved.

Further, a vacuum pipe and a heat source pipe which penetrates substantially the center of the vacuum pipe and has a heat transfer plate vertically suspended over substantially the entire length thereof, and a fluid for a heat medium until a part of the heat transfer plate is immersed. May be enclosed in a vacuum pipe. In this case, a small amount of the heat medium fluid is required, so that the heat transfer efficiency is improved.

In the above heat pipe, the end of the heat source pipe is projected from each closed end face of the vacuum pipe, and the ends are detachably connected to each other via a joint member so as to be extendable. be able to.

The joint member is detachably attached to both ends of the heat source pipe, and is used for fixing the pipe and the end to a pipe through which the heater wire can be inserted or hot water or oil can flow. And fastening means.

Accordingly, it is possible to connect a required number of heat pipes and arrange them at a desired length by using such a joint member, and it is possible to remarkably expand the applicable range and application of the heat pipes.

As a method of manufacturing such a heat pipe,
For example, a cap body is attached and closed at both ends of the pipe body, a heat source pipe is attached so as to penetrate both cap bodies, and the space between the cap bodies is sealed by welding or the like. An air bleeding cylinder is connected to the cap body. The pipe body is evacuated and depressurized from the air bleeding cylinder, and a heat medium fluid is allowed to flow in. There is a way to stop it.

As another manufacturing method, in order to more surely maintain a vacuum state, a cap body is attached to an opening of a pipe body whose one end is closed and closed, and an air vent hole penetrating through one side of the cap body. While exhausting and depressurizing the inside of the pipe from, the fluid for the heat medium flows in to form a vacuum pipe,
Thereafter, a plug is inserted into a closing hole having a diameter larger than at least the air vent hole, and the air vent hole is closed by inserting a plug into at least the air vent hole. When the exposed end of the body is sealed, the pipe body can be more securely held in a sealed state.

As still another method, a cap body is attached to the opening of the pipe body whose one end is closed, the cap body is closed, and the pipe body is evacuated and depressurized through an air vent passage penetrating the cap body, and the heat medium fluid is also discharged. After the inflow, the plug is inserted into a large diameter portion formed on the end portion side of the air vent passage to close the air vent passage, and further, the air vent passage opening to the cap body can be sealed. Of course, it is assumed that the heat source pipe is penetrated in the axial direction of the pipe body, and the space between the heat source pipe and the pipe body is securely sealed.

Further, as a further manufacturing method, a cap body having a heat source pipe insertion cylinder inserted therethrough is attached to the opening of the pipe body having one end closed, and the cap is closed, and the heat source pipe is inserted into the heat source pipe insertion cylinder. While inserting, the closed end of the pipe body is penetrated to seal the penetrating portion, and further, the open end of the heat source pipe in the heat source pipe insertion cylinder is closed,
Thereafter, the inside of the pipe is evacuated and decompressed from the heat source pipe insertion cylinder, and a heat medium fluid is introduced, and thereafter, the space between the heat source pipe insertion cylinder and the heat source pipe can be sealed. In the case of sealing, a method of caulking the heat source pipe insertion cylinder is conceivable.

In this case, it is extremely effective in manufacturing a device having a heat source pipe having a heat transfer plate suspended therefrom, and the heat source pipe can be easily arranged in a vacuum pipe.

The present invention also relates to the use of the above-mentioned heat pipe, and can be applied to, for example, soil sterilization.

That is, the heat pipe is disposed horizontally in the soil so that the heat source pipe is located on the bottom side of the vacuum pipe, and the soil is heated to kill pests and pathogenic bacteria.

At this time, since the heat pipe can be appropriately extended to a required length via the joint member as described above, the pipe work can be easily performed, and the heat pipe can be efficiently disposed over the entire field to improve the sterilizing effect. Can be done.

In the present invention, the heat pipe can be used for heating an agricultural house such as a greenhouse or a vinyl house.

That is, the heat pipe is disposed on the inner surface of the agricultural house so that the heat source pipe is located at the bottom side of the vacuum pipe and heats the inside of the agricultural house . The heat pipe with good heat transfer efficiency can effectively heat the inside of the agricultural house at low cost. Moreover, there is no temperature variation in the house, and the whole can be heated uniformly.

Further, according to the present invention, the heat pipe can be arranged on a planting tray such that the heat source pipe is located on the bottom side of the vacuum pipe. If such a tray is mounted on a table or the like and used, the agricultural worker does not need to bend over the field to perform the agricultural work as in the related art, and the workability is improved and the burden is reduced. In addition, such a tray can be used in a vegetable garden or the like, and since it is not necessary to form a field, the tray can be placed on a veranda or the like of an apartment house to easily grow vegetables.

The planting tray is provided with a concave portion for disposing a heat pipe at the bottom thereof, and further, a heat transfer plate is disposed so as to cover the inner peripheral surface of the planting tray.
It is preferable that the heat transfer plate and the heat pipe disposed in the recess be in contact with each other. With this configuration, the entire soil in the planting tray can be efficiently heated.

Further, the present invention provides the above heat pipe,
So that the heat source pipe is located on the bottom side of the vacuum pipe,
By arranging it under the floor of the house, it is possible to construct an effective floor heating with low fuel consumption.

[0055]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a heat pipe A according to the present invention, FIG. 2 is a longitudinal sectional view of the same, and FIG. 3 is a transverse sectional view of the same.

In FIG. 1 to FIG. 3, reference numeral 1 denotes a copper vacuum pipe having a high thermal conductivity, having closed ends 10 and 10 at both ends to form a vacuum state, and a heat medium fluid F made of ethanol. Is enclosed.

Reference numeral 2 denotes a heat source pipe disposed in a penetrating state close to the inner peripheral surface of the vacuum pipe 1.
Similarly, it is made of copper and can be circulated using hot water heated by a boiler or the like (not shown) as a heat source. As a heat source, oil or the like may be used instead of hot water, or heat may be generated by inserting a heater wire such as a nichrome wire.

In this embodiment, the vacuum pipe 1 and the heat source pipe 2 are each made of copper. However, other metals such as iron, aluminum and stainless steel may be used, or they may be made of synthetic resin.

As shown in FIGS. 2 and 3, when the heat pipe A is disposed horizontally with the heat source pipe 2 located at the bottom side of the vacuum pipe 1, the heat source pipe 2 It is immersed in the working fluid F, and a vapor retention space Q is formed above the heat source pipe 2.

That is, in this embodiment, the inner diameter of the heat source pipe 2 is made slightly smaller than 1/2 of the inner diameter of the vacuum pipe 1 so that the amount of hot water serving as a heat source is made as small as possible, and the heat medium fluid F Can be effectively heated, and the heated heat medium fluid F is vaporized, and the vapor rises in the vapor retention space Q as shown by an arrow f1 shown in FIG. It is cooled and liquefied, and descends and returns as indicated by arrow f2.

Since the distance between the liquid surface of the heat medium fluid F and the top wall of the vacuum pipe 1 can be very short, the above-described cycle is performed in a very short time, and the entire vacuum pipe 1 is heated in a short time. As a result, the heat transfer efficiency can be improved, and the tube wall temperature of the heat pipe A can be increased uniformly and quickly. Therefore, the heat capacity of the heat source may be small. For example, even if a boiler is used, the heat source can be covered with low fuel consumption.

Further, as shown in FIG.
Of the vacuum pipe 1 is protruded from each closed end face 10 of the vacuum pipe 1, and the ends 20, 20 are detachably connected to each other via a joint member J so as to be extendable.

The joint member J is located at the end of the heat source pipe 2.
It comprises a tube 3 which is detachable from the tube 20 and through which the heat source can flow or penetrate, and fastening means 4 for fixing the tube 3 and the end 20.

In FIG. 4A, the tube 3 is formed of a flexible synthetic resin pipe, and the fastening means 4 is constituted by a band-type clip. On the other hand, in the one shown in FIG. 4 (b), the pipe 3 is formed by a copper flare pipe,
The fastening means 4 is configured as a nut type. Therefore, in this case, an adapter 21 having a male screw corresponding to the nut type fastening means 4 is fitted to the end portion 20 of the heat source pipe 2.

As described above, by using the joint member J, it is possible to connect a required number of heat pipes A and arrange them at a desired length. Therefore, the applicable range and use of the heat pipe A can be significantly expanded.

Here, the heat pipe A instead of the above configuration
As another embodiment, the embodiment shown in FIGS. 5 to 8 will be described.

FIG. 5 is a side view of the heat pipe A according to the second embodiment, and FIG. 6 is a sectional view of the same. As shown in the figure, here, the heat source pipe 2 is configured to be coaxially attached to the outer peripheral surface of the vacuum pipe 1 by a method such as welding.

With this configuration, the mounting of the heat source pipe 2 is easy, so that the production efficiency is high and the cost is advantageous.

FIG. 7 is a side view of a heat pipe A according to the third embodiment, and FIG. 8 is a sectional view of the heat pipe A. Here, the heat source pipe 2 is made to penetrate substantially the center of the vacuum pipe 1 and extends over substantially the entire length. The heat transfer plate 22 is vertically installed, and the heat transfer plate 22
The fluid F for a heat medium is sealed in the vacuum pipe 1 until the lower part, which is a part of, is immersed.

With this configuration, the amount of the heat medium fluid F can be made extremely small. By making the amount small, the heat transfer efficiency can be improved and the surface temperature of the heat pipe A can be raised.

Table 1 shows the measurement results of the inlet and outlet temperatures of the heat source pipe 2 and the surface temperature of the vacuum pipe 1 of the heat pipe A according to the first to third embodiments.

[0072]

[Table 1]

As is apparent from Table 1, the surface temperature of the heat pipe A according to the third embodiment is highest. This is considered to be because the heat transfer efficiency was high and the heat transfer efficiency was high and the amount was appropriate when the amount of the heat medium fluid F was smaller than in the other examples. Among them, it was found that it is preferable to set the amount to such an extent that about 40% is immersed.

When the lower portion of the vacuum pipe 1 is covered with a heat insulating material C as shown in FIGS. 3, 6, and 8, the surface temperature of the upper layer can be further increased, and the heat utilization effect can be enhanced. it can.

In the heat pipe A according to the second and third embodiments, of course, the ends 20 of the heat source pipe 2 are projected from the respective closed end faces 10 of the vacuum pipe 1 so that the ends 20, 20 are connected to each other. Can be detachably connected to each other via a joint member J and extended. The second,
In each of the third embodiments, the threaded portions 23, 23 are formed at the ends 20, 20, so that the nut type fastening means 4 can be used without using the adapter 21.

Here, a method of manufacturing the above-described heat pipe A will be described below.

(Manufacturing Method 1) FIGS. 9 to 11 show a general method of manufacturing a heat pipe A and a method of filling a fluid F for a heat medium.

In the drawing, reference numeral 5 denotes a vacuum evacuation and fluid filling device (hereinafter referred to as a filling device), which is a vacuum pump hose having one end connected to a vacuum pump (not shown) via an opening / closing valve V.
And a fluid hose 54 having a measuring device 53 provided in the middle of the hose 51, the terminal end of which is connected in communication with the hose 51, the base end of which is connected in communication with the heat medium storage tank 52.

V1 and V2 are opening / closing valves provided on the fluid hose 54.

As shown in FIG. 9, cap bodies 11 and 11 are attached and closed in advance at both ends of a pipe body to be a vacuum pipe 1, and a heat source pipe is inserted through both cap bodies 11 and 11. 2 and the space between the heat source pipe 2 and each cap body 11 is sealed by welding or the like. In addition, an air vent tube 12 is connected to the cap body 11 on one side in advance, and the vacuum quote hose 51 is connected to the air vent tube 12 in communication therewith.

Then, the pipe body is evacuated and depressurized by opening the opening / closing valve V and operating the vacuum pump. Thereafter, the opening / closing valve V is closed and the vacuum pump is stopped. As shown in FIG. Open / close valve
V2 is opened, and the heat medium fluid F measured to a predetermined amount by the meter 53 from the heat medium fluid storage tank 52 is filled into the pipe body from the air vent cylinder 12.

Thereafter, the protruding portion of the air release cylinder 12 from the cap body is swaged by a pressure welding machine 6 such as a pressure roller, and the vacuum quote hose 51 is removed as shown in FIG. Preferably, the caulked portion of the air release cylinder 12 is completely sealed by welding or the like.

(Manufacturing Method 2) FIGS. 12 to 14 show another manufacturing method.

First, a pipe body with one end closed, that is, a bag-shaped pipe body or a cap body 11 attached to one side opening of a pipe body having both ends opened as described in the manufacturing method 1, the other side opening The cap body 11 is attached to the part, and both ends are first closed.

The cap body 11 has an air vent hole 13 penetrated in advance.
A plug hole 14 having a diameter larger than that of 13 is formed in an orthogonal state, and a sharp plug 15 is inserted into the plug hole 14.

Then, as shown in FIG.
The vacuum suction hose 51 is connected to the air vent hole 13, and the filling device 5 is operated in the above-described procedure to evacuate and depressurize the inside of the pipe and to flow the heat medium fluid F. 16 is a hose 51 for connecting the vacuum quote hose 51 to the air vent hole 13.
It is a sharp connecting cylinder attached to the tip.

Thereafter, as shown in FIG. 13, a plug 15 is inserted into the plug hole 14 by driving it into the air hole 13.
And remove the vacuum quote hose 51.

Next, as shown in FIG.
The opening 13 and the exposed end of the plug 15 are sealed by welding or the like. According to this method, the sealing of the vacuum pipe 1 is more reliably performed.

(Manufacturing Method 3) FIGS. 15 to 19 show another manufacturing method.

As shown in FIG. 15, the reciprocating filling device 7 utilizes a reciprocating filling device 7 in which a stopper device 71 is provided on a rail 70 so as to be able to reciprocate. A filling section 5 ′ having substantially the same configuration as the above-described filling apparatus 5 is connected to the capping device 71.

Reference numeral 55 denotes a connecting pipe provided at the tip of the filling section 5 '.

A bolt-shaped plug 73 rotated by an insertion pin 74 interlockingly connected to a motor unit (not shown) housed in the plugging device 71 is provided in the end of the connecting pipe 55,
The insertion pin 74 is covered with a bellows body 75.
Reference numeral 71a denotes wheels that roll on the rail body 70.

The cap body 11 for closing the openings at both ends is also provided.
An air vent passage 17 is penetrated in advance in one of them, and a relay cylinder 18 having a diameter larger than that of the passage 17 and having a threaded inner peripheral surface is connected to the air vent passage 17. Has been established. That is, the relay tube 18 forms a large diameter portion of the air vent passage 17.

Then, the end of the connecting pipe 55 and the relay tube 18 are connected and connected via the joint tube 19, and as shown in FIG. 16, the filling portion 5 'is operated to exhaust and decompress the inside of the pipe. At the same time, the heat medium fluid F is filled.

Thereafter, as shown in FIG.
The bolt-shaped plug 73 is screwed into the relay cylinder 18 while moving forward, and the air vent passage 17 is securely closed. As described above, since the bolt-shaped plug 73 is used, the plug can be reliably and smoothly closed.

Next, as shown in FIG.
The 18 is cut from the root, and as shown in FIG. 19, the rear of the bolt-shaped plug 73 in the relay cylinder 18 is welded and sealed, and the inside of the vacuum pipe 1 is completely sealed. When welding and sealing,
It is even better to do this after filling the stopper.

Further, here, the plug is formed as a bolt-shaped plug 73 by forming a screw portion on the inner peripheral surface of the relay cylinder 18. However, the present invention is not limited to such a configuration, and the terminal of the air vent passage 17 is not limited to this. A large-diameter portion may be formed on the side of the cap, a plug may be inserted into the large-diameter portion by driving or the like to close the plug, and further, an air passage opening of the cap body 11 may be sealed.

(Manufacturing Method 4) FIGS. 20 to 23 show another manufacturing method.
This method uses the heat pipe A according to the third embodiment,
That is, it is suitable for the one having the heat source pipe 2 provided with the heat transfer plate 22.

As shown in FIGS. 20 and 21, a cap body 11 in which a heat source pipe insertion cylinder 9 is inserted is attached to the opening of the pipe body whose one end is closed. At this time, a flange portion 11a for caulking is formed on the peripheral edge of the cap body 11, and it is caulked to the end of the pipe body via the O-ring 8, so that the opening is securely closed and sealed.

Then, the heat source pipe 2 is inserted through the heat source pipe insertion cylinder 9, and the penetrated portion is sealed by penetrating the closed end portion 10 on the other side of the pipe body (FIGS. 22 and 23).
Further, the open end of the heat source pipe 2 in the heat source pipe insertion cylinder 9 is closed with a heat source pipe plug 25.

Thereafter, as shown in FIG.
The pressure inside the pipe is exhausted and decompressed from the heat source pipe insertion cylinder 9 using the heat source pipe 9, and the heat medium fluid F flows in. Reference numeral 19 denotes a joint tube used in the manufacturing method 3, but the end of the hose of the filling device 5 may be directly connected to the heat source pipe insertion tube 9.

Thereafter, as shown in FIG. 23, the space between the heat source pipe insertion cylinder 9 and the heat source pipe 2 is caulked and sealed.
It seals the inside of the pipe. Then, the heat pipe A is separated from the filling device 5 to obtain a product. In addition, 9a is a caulking part.

Next, a method of utilizing the above-described heat pipe A will be described below.

(Soil Disinfection Method) First, a soil disinfection method using the heat pipe A will be described with reference to FIG.

That is, since the soil disinfection method according to the present invention is known to kill most of the pathogenic bacteria and pests at 50-60 ° C. in the soil, the heat pipe A
Is buried in the soil of the field, when growing crops such as vegetables, during the fallow period before transplanting the seedlings, the soil is heated and disinfected with the heat pipe A, and then the seedlings are grown to prevent disease and insect damage. They try to protect the crops.

In FIG. 24, B is a fallow field, and a heat pipe A, which is extended to a required length via a joint member J, is buried horizontally in the soil of a large number of ridges B1. are doing. In addition, the size and number of the vacuum pipes 1, the burying depth, and the like can be appropriately set.

Tables 2 and 3 show the experimental results of the soil disinfection method using the heat pipe A according to the present invention.

[0108]

[Table 2]

[0109]

[Table 3]

Table 2 shows the change in soil temperature caused by the heat pipe A. Table 3 shows the occurrence of eggplant wilt at the place where the soil was disinfected with the heat pipe A and the place where the soil was disinfected with chlorpicrin. Eggplant grown for the experiment is furnished after disinfection.
Eight plants were planted on B1 and raised, the roots were cut off, and the presence or absence of lesions was visually inspected.

The heat pipe A used in the experiment had an outer diameter of 15 mm and an inner diameter of 13.4 mm, and had a depth of about 30 cm from the ground surface.
It was buried at intervals of 30 cm, and a heater wire was used as a heat source.

Each of the thermometers No. 1 to No. 7 in Table 1 is shown in FIG.
As shown in FIG. 5, 5 cm horizontally from each heat pipe A.
No. 1 to No. 4 thermometers at intervals, No. 5 thermometers at the embedded position of heat pipe A, and No. 6 and No. 7 thermometers at 10 cm intervals in the height direction It is set.

As shown in Table 2, it can be seen that the temperature reached 50 ° C. in the entire area of the ridge B1 five days after the power was supplied to the heater.

As shown in Table 3, it was found that all the eight strains that had been disinfected with the heat pipe A in the soil were grown healthy in three surveys.

On the other hand, those using chlorpicrin did not grow healthy in all of the three surveys.
Bacterial wilt occurred partially or in the whole body, and two strains died in all three surveys.

As described above, the heat pipe A according to the present invention
It was found that the soil disinfection method using
It is safe without any adverse effects on the human body or causing environmental pollution, and there is no possibility of causing pollution in the future.Furthermore, disinfection methods by other heat treatments, for example, steam heating method Since the heat source temperature can be kept lower than that of other types, fuel economy can be reduced, and
Geothermal energy, hot spring heat, and solar heat can be used as a heat source, so that a large energy saving effect can be obtained.

(Method of Heating Agricultural House Using Heat Pipe A) Next, a method of heating an agricultural house using the heat pipe A according to the present invention will be described with reference to FIG.

In FIG. 26, reference numeral H denotes a vinyl house as an agricultural house. A frame is constituted by a plurality of arched frames H1 and a plurality of horizontal frames H2 connecting them, and a transparent or cloudy film H3 is stretched. It is set up and configured. B2 is a ridge formed in the house.

On the inner surface of the vinyl house H, the heat pipe A having the above-mentioned structure is horizontally disposed.

In this embodiment, the heat pipes A are appropriately connected to each other by the joint members J shown in FIG. 4 in accordance with the entire length of the vinyl house H, and are arranged in two steps below the inner side surfaces. A heat source (not shown) such as a boiler and a heat source pipe 2 of a heat pipe A disposed at an end thereof are connected to each other via a connection hose A1 so that heated hot water can be circulated.

As described above, the heat pipe A according to the present invention
Can be used for heating in an agricultural house, heat pipe A
The heat generated by the heat is uniformly distributed throughout the house, and heating can be performed efficiently.

Further, since the amount of hot water circulated through the heat source pipe 2 may be small, the size of the boiler or the like can be reduced, and the amount of fuel used can be reduced, so that heating can be performed at low cost. Further, as described above, since geothermal energy, hot spring heat, and solar heat can be used as the heat source, a large energy saving effect can be obtained.

Furthermore, according to this method, there is no possibility that the hot air is directly applied to the crop unlike the conventional hot air heating method.
Good crop cultivation.

(Planting Tray with Heat Pipe A) As a further method of using the heat pipe A according to the present invention, the one shown in FIG. 27 will be described.

The heat pipe A is disposed horizontally on the planting tray E so that the heat source pipe 2 is located on the bottom side of the vacuum pipe 1, and the soil K in the tray E is heated. It is possible to promote crop cultivation as much as possible. M is a strawberry as a crop to be cultivated.

The planting tray E according to the present embodiment covers a tray body 60 made of styrene foam having a concave portion 61 for disposing the heat pipe A at the bottom and an inner peripheral surface of the tray body 60. Heat transfer plate 62 and a heat transfer plate 62
A rubber cover 63 is provided to cover the heat transfer plate 62 so that the soil K and moisture do not directly touch the 62.

Then, the heat pipe A and the heat transfer plate 62 provided in the recess 61 are brought into contact with each other to transfer heat to the entire tray main body 60 so that the soil K is efficiently heated. To promote the development of children. Reference numeral 64 denotes a heat insulating material provided in the recess 61.

Although the planting tray E may be placed on the ground, it can be placed on a mounting table G having an appropriate height as shown in FIG.

When the mounting table G is used as described above, the worker can perform the strawberry management work in an easy posture without bending down, so that the work load can be greatly reduced.

In this embodiment, the heat pipe A
Can be connected to form a plurality of planting trays E. For example, one heat pipe A is provided in one tray body 60 to be used as a single planting tray E. You can also.

With this configuration, it is possible to satisfactorily grow vegetables and the like in the yard of a general house or on the veranda.

The tray body 60 and the heat transfer plate 6
2. The material of the cover 63 is not limited to the above, and any material may be used as long as the function is not impaired.

(Other Uses of Heat Pipe A) Next, other uses of the heat pipe A in fields other than the agricultural field will be described below.

The heat pipe A according to the present invention can be suitably used for floor heating.

That is, as described above, the heat pipe A according to the present invention can be laid horizontally. Therefore, when the heat pipe A is installed at the lower part of the floor of a house, the thickness of the lower part of the floor at which the heat pipe A is stored is reduced. Can be reduced, which is extremely advantageous in terms of workability and cost.

Further, the heat pipe A according to the present invention can be suitably used in a parking lot or the like. If the heat pipe A is buried in the ground, it does not snow on the ground surface. Traffic is safe. In particular, in the case where there is a slope from the roadway to the parking lot, if the heat pipe A is arranged under the slope, the slip accident due to snow or freezing can be prevented.

[0137]

The present invention is embodied in the above-described embodiment, and has the following effects.

(1) According to the first aspect of the present invention, there is provided a structure comprising a vacuum pipe in which a fluid for a heat medium is sealed and a heat source pipe penetrating in close proximity to the inner peripheral surface of the vacuum pipe. The heat source pipe efficiently heats the heat medium fluid as a whole, thereby improving the heat transfer efficiency.
Since the heat pipe can be arranged in a horizontal state, the use of the heat pipe can be expanded.

(2) According to the second aspect of the present invention, when the heat source pipe is horizontally disposed with the heat source pipe located at the bottom side of the vacuum pipe, the heat source pipe is submerged in the heat medium fluid. ,
In addition, since a vapor retention space is formed above the heat source pipe, in addition to the effect of the above (1), the amount of the heat medium fluid to be filled can be minimized with respect to the required heat amount, If the amount of the heat medium fluid is adjusted by changing the size of the vacuum pipe, the amount of heat transfer can be easily adjusted.

(3) According to the third aspect of the present invention, a vacuum pipe and a heat source pipe which penetrates substantially the center of the vacuum pipe and has a heat transfer plate vertically suspended over substantially the entire length thereof are provided.
By adopting a configuration in which the heat medium fluid is sealed in the vacuum pipe until a part of the heat transfer plate is immersed, a small amount of the heat medium fluid is required, so that the heat transfer efficiency is improved.

(4) According to the fourth aspect of the present invention, the ends of the heat source pipes are respectively protruded from the respective closed end faces of the vacuum pipe, and the ends are detachably connected to each other via a joint member. By making it extendable,
In addition to the effects (1) to (3) , the length can be freely adjusted according to the required length, and the degree of freedom in layout can be significantly improved.

(5) According to the fifth, first, and third aspects of the present invention, a cap body having a heat source pipe insertion cylinder inserted therein is attached to an opening of a pipe body having one end closed. Then, while inserting the heat source pipe into the heat source pipe insertion cylindrical body, penetrating the closed end portion of the pipe body to seal the penetrating portion, further, the open end of the heat source pipe in the heat source pipe insertion cylindrical body. The pipe was closed, and then the inside of the pipe was evacuated and decompressed from the heat source pipe insertion cylinder, and a heat medium fluid was introduced, and then the space between the heat source pipe insertion cylinder and the heat source pipe was sealed. This facilitates disposing the heat source pipe in the vacuum pipe.

(6) According to the sixth aspect of the present invention, the heat pipe according to any one of the first to fourth aspects is horizontally arranged in the soil so that the heat source pipe is located at the bottom of the vacuum pipe. Since the soil is heated and disinfected, the soil can be disinfected effectively at low cost by using a heat pipe having a high heat transfer efficiency. In addition, it is safe without any adverse effects on the human body or environmental pollution.

[0144] (7) In the present invention according to claim 7, wherein the heat pipe according to any one of claims 1-4, wherein the heat source pipe Howe agricultural so as to be positioned on the bottom side of the vacuum pipe
Since the inside of the agricultural house is disposed horizontally on the inner surface of the heat source and the inside of the agricultural house is heated, the inside of the agricultural house can be effectively heated at low cost by a heat pipe having good heat transfer efficiency.

(8) In the present invention according to claim 8 , the heat pipe according to any one of claims 1 to 4 is mounted on a planting tray such that the heat source pipe is located on the bottom side of the vacuum pipe. Since the trays are arranged horizontally, by using such trays mounted on a table or the like, the farmer does not need to bend over to the field to perform farming work as in the past, thus improving workability. The burden is also reduced.

(9) According to the ninth aspect of the present invention, a recess for disposing a heat pipe is provided at the bottom of the planting tray, and the inner periphery of the planting tray is covered. By disposing a heat plate and bringing the heat transfer plate into contact with a heat pipe disposed in the recess, in addition to the effect of (8) , the entire soil in the planting tray is efficiently added. Can be warmed.

(10) According to the tenth aspect of the present invention, the heat pipe according to any one of the first to fourth aspects is connected to the floor of a house such that the heat source pipe is positioned at the bottom of the vacuum pipe. Since it is arranged horizontally at the lower part, effective floor heating can be performed with low fuel consumption.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat pipe according to the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a cross-sectional view of the same.

FIG. 4 is an explanatory view of a joint member.

FIG. 5 is a side view of a heat pipe according to a second embodiment.

FIG. 6 is a sectional view taken along line II of FIG. 5;

FIG. 7 is a side view of a heat pipe according to a third embodiment.

FIG. 8 is a sectional view taken along line II of FIG. 7;

FIG. 9 is a process chart of the heat pipe manufacturing method 1;

FIG. 10 is a process chart of the heat pipe manufacturing method 1;

FIG. 11 is a process chart of the heat pipe manufacturing method 1;

FIG. 12 is a process chart of a heat pipe manufacturing method 2;

FIG. 13 is a process chart of a heat pipe manufacturing method 2;

FIG. 14 is a process chart of the heat pipe manufacturing method 2;

FIG. 15 is an explanatory diagram of an advance / retreat type filling apparatus used in a heat pipe manufacturing method 3.

FIG. 16 is a process chart of the heat pipe manufacturing method 3;

FIG. 17 is a process chart of the heat pipe manufacturing method 3;

FIG. 18 is a process chart of the heat pipe manufacturing method 3;

FIG. 19 is a process chart of the heat pipe manufacturing method 3;

FIG. 20 is a process drawing of a heat pipe manufacturing method 4;

FIG. 21 is a process drawing of a heat pipe manufacturing method 4;

FIG. 22 is a process chart of the heat pipe manufacturing method 4;

FIG. 23 is a process chart of the heat pipe manufacturing method 4;

FIG. 24 is an explanatory diagram of a soil disinfection method using a heat pipe according to the present invention.

FIG. 25 is an explanatory view schematically showing an experimental state of the soil disinfection method.

FIG. 26 is an explanatory diagram of a method for heating an agricultural house using a heat pipe according to the present invention.

FIG. 27 is an explanatory diagram of a planting tray including the heat pipe according to the present invention.

FIG. 28 is an explanatory view of a conventional method of heating an agricultural house.

[Explanation of symbols]

 Reference Signs List A Heat pipe E Planting tray F Heat medium fluid J Joint member H Agricultural house Q Steam retention space 1 Vacuum pipe 2 Heat source pipe 10 Closed end face 18 Large diameter part (relay tube) 20 End part 22 Heat transfer plate 61 Recess 62 Heat transfer plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-4877 (JP, A) JP-A-63-123993 (JP, A) JP-A-8-145473 (JP, A) JP-A 56-1984 27891 (JP, A) JP-A-53-106136 (JP, A) JP-A-6-101980 (JP, A) JP-A-54-59658 (JP, A) JP-A-49-47146 (JP, A) JP-A-57-141229 (JP, A) JP-A-5-328858 (JP, A) JP-A 62-136777 (JP, U) JP-A 56-173867 (JP, U) JP-A 64-3542 (JP, U) JP-A 60-121119 (JP, U) JP-B 5-81828 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F28D 15/02 A01G 9 / 24 A01M 17/00

Claims (10)

(57) [Claims] 1. A vacuum pipe in which a heat medium fluid (F) is sealed.
And (1), a heat pipe consisting of a is close to the inner circumferential surface of the vacuum pipe (1) fitted through the heat source pipe (2), the opening of the pipe was closed at one end, a heat source pipe inserted Universal
Attach and close the cap body (11) with the cylindrical body (9)
The heat source pipe through the heat source pipe insertion cylinder (9).
(2), and close the pipe body.
Penetrate the closing end (10) to seal the penetrating part,
In addition, the heat source pipe (2) inside the heat source pipe insertion cylinder (9)
Plug the open end of the
When exhausting and depressurizing the inside of the pipe from the cylinder (9)
In both cases, the heat medium fluid (F) is allowed to flow in,
Seal between the heat source pipe insertion tube (9) and the heat source pipe (2).
A heat pipe characterized by being stopped . When the heat source pipe (2) is disposed horizontally with the heat source pipe (2) positioned at the bottom side of the vacuum pipe (1), the heat source pipe (2)
2. A heat pipe according to claim 1, wherein the heat pipe is submerged in the heat medium fluid and a vapor retention space is formed above the heat source pipe. 3. A vacuum pipe (1) and a heat transfer plate (2) penetrating substantially through the center of the vacuum pipe (1) and extending over substantially the entire length thereof.
2) and a heat source pipe (2) with the heat transfer plate (2
A heat pipe in which a heat medium fluid (F) is sealed in a vacuum pipe (1) until a part of 2) is immersed .
Attach and close the cap body (11) with the cylindrical body (9)
The heat source pipe through the heat source pipe insertion cylinder (9).
(2), and close the pipe body.
Penetrate the closing end (10) to seal the penetrating part,
In addition, the heat source pipe (2) inside the heat source pipe insertion cylinder (9)
Plug the open end of the
When exhausting and depressurizing the inside of the pipe from the cylinder (9)
In both cases, make the heat medium fluid (F) flow in, and then
Seal between the heat source pipe insertion tube (9) and the heat source pipe (2).
A heat pipe characterized by being stopped . 4. An end (20) of the heat source pipe (2) is projected from each of the closed end faces (10) and (10) of the vacuum pipe (1), and the ends (20) are joined to each other by a joint member ( The heat pipe according to any one of claims 1 to 3 , wherein the heat pipe is detachably connected to each other via J) so as to be extendable. 5. A cap body (11) in which a heat source pipe insertion cylinder (9) is penetrated is attached to the opening of the pipe body having one end closed, and the cap body is closed, and the heat source pipe insertion cylinder (9) is closed. A heat source pipe (2) is inserted through the closed end (1) of the pipe body.
0) to seal the penetrating part, and further close the open end of the heat source pipe (2) in the heat source pipe insertion cylinder (9),
Thereafter, the inside of the pipe is evacuated and depressurized from the heat source pipe insertion cylinder (9), and the heat medium fluid (F) flows in. Thereafter, the heat source pipe insertion cylinder (9) and the heat source pipe (2) are connected to each other. A method for manufacturing a heat pipe, wherein a gap is sealed. 6. The heat pipe (A) according to claim 1 , wherein the heat source pipe (2) is horizontally disposed in the soil such that the heat source pipe (2) is located at the bottom side of the vacuum pipe (1). And heat disinfecting the soil. 7. The heat pipe (A) according to claim 1 , wherein the heat source pipe (2) is located at the bottom of the vacuum pipe (1). A method of using a heat pipe, wherein the heat pipe is disposed horizontally on an inner surface to heat an agricultural house (H). 8. A planting tray (E) wherein the heat pipe (A) according to any one of claims 1 to 4 is placed such that the heat source pipe (2) is located at the bottom side of the vacuum pipe (1). A method for utilizing a heat pipe, wherein the heat pipe is disposed horizontally. 9. A heat pipe at the bottom of the planting tray (E).
(A) is provided, and a heat transfer plate (62) is provided so as to cover the inner peripheral surface of the planting tray (6). The method according to claim 8, wherein the heat pipe (A) is brought into contact with the heat pipe (A) disposed in the recess (61). 10. The heat pipe (A) according to claim 1 , wherein said heat source pipe (2) is a vacuum pipe (1).
A method of using a heat pipe, wherein the heat pipe is horizontally arranged below a floor of a house so as to be located at a bottom side of a house.