WO1998035197A1

WO1998035197A1 - Heat pipe, method of manufacturing same, and method of utilizing same

Info

Publication number: WO1998035197A1
Application number: PCT/JP1998/000516
Authority: WO
Inventors: Tomoko Harashima
Original assignee: Tomoko Harashima
Priority date: 1997-02-07
Filing date: 1998-02-06
Publication date: 1998-08-13
Also published as: AU5780998A; JP3359555B2; JPH10288482A

Abstract

A heat pipe that can be laid horizontally, a method of manufacturing the same, and a method of effectively utilizing the same, for example, a method of performing soil desinfection at low cost. A heat supply pipe (2) is inserted into a vacuum pipe (1) filled with a heating medium fluid (F) so as to be adjacent to an inner peripheral surface of the vacuum pipe (1) to constitute a heat pipe (A). The heat pipe (A) is placed horizontally in soil, agricultural green house, planting tray, underfloor of a house, or underground in such a manner as to position the heat supply pipe (2) on a bottom side of the vacuum pipe (1), so that it is utilized for soil disinfection by heating, heating in agricultural green houses, heating of soil in planting trays, floor heating and snow melting.

Description

Heat damage pipe, method for producing the heat pipe, and method for using the heat pipe

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

Heat pipes are generally constructed by enclosing an appropriate amount of 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, and the The heat medium fluid flows to the other end and condenses in contact with the tube wall. The condensed heat medium fluid returns to the one end by gravity and is heated again, thus repeating the cycle.

In this way, the heat pipe continuously transfers heat from the high-temperature part at one end of the pipe to the low-temperature part at the other end by the heat medium fluid returning from steam to movement, condensation, and reflux. Like that.

However, such heat pipes have not yet been applied to the agricultural sector.

For example, when heating an agricultural house such as a greenhouse or a bur house, a hot air heating system using a hot air ripening device using a boiler or the like was the mainstream.

Generally, a hot air heating device X shown in Fig. 28 is used, and the hot air heating device X is a heat source device 200 including an oil-fired burner outside the agricultural house 100. The duct 400 was extended from the heat source device 200 to the agricultural house 100m2 via the 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 is attracting attention as an alternative to the chemical disinfection method generally used in the past.

In other words, it has been found that methyl bromide, which has been widely used in conventional chemical disinfection methods, can cause ozone layer destruction. As a result, chloropicrin has come to be used, but this also has disadvantages such as inferior effect at low temperature, no effect on virus, and a short processing time. However, problems such as adverse effects on the human body and contamination of groundwater have become problems, and in such circumstances, attention has been paid to soil heat treatment and steam disinfection as soil disinfection methods that do not cause pollution. It is a thing.

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

In other words, the hot-air heating device X causes the oil-burning type to contaminate 100 m2 of the agricultural house, and forcibly sends the hot air, so that the hot air can directly hit the crops. There was a possibility that the crop itself could be adversely affected. In recent years, a hot water circulation system that circulates hot water using a boiler has been proposed.However, due to the large temperature effect of hot water as a heat source, there is a large difference in heat radiation between the pipe inlet and outlet. Occurs. Therefore, the hot water temperature had to be raised to obtain a predetermined amount of heat radiation at the pipe outlet, and the fuel cost was accordingly high.

In addition, soil heat treatment and steam disinfection require large capital investment such as large boilers, and it is difficult for general agricultural workers to adopt them.

Therefore, the present applicant has focused on a heat pipe and tried to apply the heat pipe to the agricultural field. However, as described above, a conventional heat pipe is used for a heat medium condensed by evaporation. Heat pipe is installed because the fluid is recirculated by gravity. If it is required to be standing upright or lying down, it is absolutely necessary to have a gradient to recirculate the heat transfer fluid. Was difficult to apply to the agricultural field.

In other words, for heating a greenhouse or a bulhouse, heat pipes must be installed at a short distance, and when used for disinfection of soil in fields, heat pipes are uniformly installed over a large area. Must.

However, if a slope is needed to place the heat pipe, there is a limit to extending the heat pipe.

In addition, even in the case of soil disinfection, it is efficient to lay the heat pipe in a lying position in the soil, but as described above, it is difficult to spread the heat pipe, and the slope is also difficult. If this is the case, the height of the pipe and the surface of the ground will naturally change gradually in the direction in which the heat pipes are arranged, so the amount of heat transfer to the soil will vary from place to place, which is not desirable.

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. Disclosure of the invention

According to the present invention, a vacuum pipe filled with a heat medium fluid is provided, and a heat source pipe is provided in close proximity to the inner peripheral surface of the vacuum pipe. Therefore, the heat source pipe can efficiently heat the heat medium fluid as a whole, thereby improving the heat transfer efficiency. In addition, the heat pipe can be disposed in a horizontal state, so that the heat pipe can be disposed. Can be used for more applications.

Further, in the present invention, when the heat source pipe is horizontally disposed in a state where the heat source pipe is located on the bottom side of the vacuum pipe, the heat source pipe is immersed in the heat medium fluid, and Above, a vapor retention space is formed. Therefore, the amount of the heat medium fluid to be filled is the minimum amount with respect to the required heat amount, and the size of the vacuum pipe If the amount of the heat medium fluid is adjusted by changing the temperature, the amount of heat transfer can be easily adjusted.

In the present invention, a vacuum pipe filled with a heat medium fluid is provided, and a heat source pipe is coaxially mounted on an outer peripheral surface of the vacuum pipe. Therefore, the heat source pipe can be easily attached.

Also, in the present invention, a vacuum pipe, and a heat source pipe penetrating substantially the center of the vacuum pipe and having a heat transfer plate suspended substantially over the entire length thereof, a part of the heat transfer plate The structure was such that the heat medium fluid 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.

Further, in the present invention, the ends of the heat source pipe are projected from the respective closed end faces of the vacuum pipe, and the ends are detachably connected to each other via a joint member so as to extend.とした Made possible. Therefore, the length can be freely adjusted according to the required length, and the degree of freedom of the layout is significantly improved.

Further, in the present invention, a cap body is attached to an opening of a pipe body whose one end is closed and closed, and the pipe body is evacuated and depressurized from an air release cylinder penetrated through the cap body. A fluid for a heat medium flows in, and thereafter, the air vent cylinder is bored perpendicular to the air vent cylinder, and a plug is inserted into at least a stopper hole larger than the air vent cylinder to close the air vent cylinder. In addition, the protruding portion of the air vent cylinder is cut off, and the cut portion and the exposed end of the plug are sealed. Therefore, the vacuum pipe can be reliably sealed, and the air vent tube does not remain in a protruding state, so that it does not disturb the arrangement or the like.

Further, in the present invention, as a method for manufacturing a heat pipe, a cap body is attached to an opening of a pipe body whose one end is closed, the cap body is closed, and an air vent passage penetrating the cap body is provided. The pipe body is evacuated and decompressed, and a heat medium fluid is introduced. Thereafter, a plug is inserted into a large-diameter portion formed at the end of the air vent passage to close the pipe, and the cap is further closed. It was decided to seal the air passage opening of the pump body. Therefore, the vacuum pipe can be securely closed. Further, in the present invention, a cap body having a heat source pipe penetrating body attached thereto is attached to the opening of the pipe body one end of which is closed and closed, and the heat source pipe is confined to the heat source pipe penetrating cylinder. While passing through the closed end of the pipe body to seal the penetrating portion, and further close the open end of the heat source pipe in the heat source pipe passage cylinder. The pipe body was evacuated and depressurized from the source pipe passage cylinder, the heat medium fluid was introduced, and then the space between the heat source pipe passage cylinder and the heat source pipe was sealed. Therefore, it is easy to arrange the heat source pipe in the vacuum pipe.

Further, in the present invention, the heat pipe is disposed horizontally in the soil such that the heat source pipe is located on the bottom side of the vacuum pipe, and the soil is heated and disinfected. Therefore, heat pipes with high heat transfer efficiency can effectively disinfect soil at low cost.

Further, in the present invention, the heat pipe is disposed horizontally on one side of the valve housing such that the heat source pipe is located on the bottom side of the vacuum pipe, and the valve housing is heated. Therefore, the heat pipe with good heat transfer efficiency can effectively heat the inside of the agricultural house at low cost.

Further, in the present invention, the heat pipe is arranged horizontally on the planting tray so 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 past, improving workability and reducing the burden. Become.

Further, in the present invention, a concave portion for disposing a heat pipe is provided at the bottom of the planting tray, and a heat transfer plate is disposed so as to cover an inner peripheral surface of the planting tray. Then, the heat transfer plate was brought into contact with a heat pipe disposed in the recess. Therefore, the whole soil in the planting tray can be efficiently heated.

Further, in the present invention, the heat pipe is arranged horizontally below the floor of a 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. BRIEF DESCRIPTION OF THE FIGURES

【Figure 1 】

FIG. 2 is a perspective view of a heat pipe according to the present invention.

【Figure 2 】

FIG.

[Figure 3]

FIG.

[Figure 4]

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

[Figure 5]

FIG. 6 is a side view of a heat pipe according to the second embodiment.

FIG. 6 is a cross-sectional view taken along the line I-I of FIG.

[Fig. 7]

FIG. 8 is a side view of a heat pipe according to the third embodiment.

FIG. 8 is a cross-sectional view taken along the line I-I of FIG.

[Fig. 9]

FIG. 4 is a process chart of a heat pipe manufacturing method 1.

[Fig. 10]

FIG. 4 is a process chart of a heat pipe manufacturing method 1.

[Fig. 11]

FIG. 4 is a process drawing of a heat pipe manufacturing method 1.

[Fig. 1 2]

FIG. 6 is a process drawing of a heat pipe manufacturing method 2. [Fig. 13]

FIG. 3 is a process chart of a heat pipe manufacturing method 2.

[Fig. 14]

FIG. 4 is a process chart of Heat Pipe Manufacturing Method 2;

[Fig. 15]

FIG. 16 is an explanatory view of a retractable filling device used in a heat pipe manufacturing method 3 [FIG. 16]

FIG. 4 is a process chart of Heat Pipe Manufacturing Method 3;

[Fig. 17]

FIG. 4 is a process chart of Heat Pipe Manufacturing Method 3;

[Fig. 18]

FIG. 4 is a process chart of a heat pipe manufacturing method 3;

[Fig. 19]

FIG. 6 is a process drawing of a heat pipe manufacturing method 3.

[Fig. 20]

FIG. 6 is a process chart of a heat pipe manufacturing method 4.

[Fig. 21]

FIG. 6 is a process drawing of a heat pipe manufacturing method 4.

[Fig. 22]

FIG. 6 is a process drawing of a heat pipe manufacturing method 4.

[Fig. 23]

FIG. 6 is a process drawing of a heat pipe manufacturing method 4.

[Fig. 24]

It is an explanatory view of a soil disinfection method using a heat pipe according to the present invention.

[Fig. 25]

It is explanatory drawing which shows the experimental state of the same soil disinfection method typically. 【Fig. 26】

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a method for heating an agricultural gas using a heat pipe according to the present invention.

[Fig. 27]

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the tray for planting provided with the heat pipe which concerns on this invention.

[Fig. 28]

It is explanatory drawing of the heating method of the conventional agricultural house. BEST MODE FOR CARRYING OUT THE INVENTION

According to the present invention, a heat pipe is inserted in a vacuum pipe filled with a heat medium fluid in close proximity to the outer peripheral surface of the pipe, and is a heat pipe that can be disposed in a horizontal state.

For the vacuum pipe and the heat source pipe, a material having high thermal conductivity, for example, a metal pipe of copper, iron, aluminum, stainless steel, or the like can be preferably used, and a pipe made of a synthetic resin can also be used. Can be used. The cross-sectional shape may be a polygonal shape such as a triangle or a square.

Further, as the fluid for the heat medium, alcohol-based fluids such as ethanol, methanol, and the like, or a fluid in which a silicic gel is mixed can be suitably used. .

In addition, a heater wire may be provided in the ripe source pipe, or hot water, oil or the like may be circulated to provide a ripe source.

When the heat source pipe is horizontally disposed 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 submerged in the heat medium fluid. A vapor retention space is formed above the source pipe.

Therefore, the heat medium pipe can efficiently heat the heat medium fluid as a whole, and the heat medium fluid is heated and vaporized, and the generated vapor rises in the vapor retention space to form a vacuum pipe. It is cooled by contact with the wall, liquefied and refluxed downward. The cycle will be 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. Thus, the heat transfer efficiency can be improved, and the heat pipe wall temperature can be increased uniformly and quickly. In addition, 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.

In addition to the above, the heat pipe has, for example, a structure consisting of a vacuum pipe filled with a heat medium fluid and a heat source pipe coaxially mounted on the outer peripheral surface of the vacuum pipe. In this case, the installation of the heat source pipe is easy, and the production efficiency can be improved.

In addition, the vacuum pipe is composed of a vacuum pipe and a heat source pipe that penetrates substantially the center of the vacuum pipe and has a heat transfer plate suspended over substantially the entire length thereof, and heat is applied until a part of the heat transfer plate is immersed. It is also possible to adopt a configuration in which a medium fluid is sealed in a vacuum pipe. In this case, the heat transfer efficiency is improved because a small amount of the heat medium fluid is required.

In the above heat pipe, an 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. Can be extendable.

The joint member is detachably attached to both ends of the heat source pipe, and is capable of penetrating the heater wire or allowing hot water or oil to flow therethrough. The joint member is fixed to the end of the heat pipe. And fastening means.

Therefore, 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 to significantly expand the applicable range and use of the heat pipes. Becomes possible.

As a method of manufacturing such a heat pipe, for example, the pipe body is formed at both end openings. Attach and close the caps, attach a heat source pipe so as to penetrate both caps, seal the gaps between the caps by welding, etc. An air release cylinder is connected to the air release cylinder, and the pipe body is evacuated and decompressed from the air release cylinder, and a heat medium fluid is allowed to flow in. There is a method of caulking and sealing the protruding portion.

In addition, as another manufacturing method, in order to more reliably maintain a vacuum state, a cap body is attached to the opening of the pipe body whose one end is closed, and the cap body is closed on one side. The inside of the pipe is evacuated and depressurized through an air vent hole penetrating through it, and a vacuum pipe is formed by injecting a heat medium fluid. Thereafter, the vacuum pipe is drilled perpendicular to the air vent hole, and at least the air vent hole is formed. By inserting a plug into a large-diameter plugging hole to close the air vent hole, and further sealing the opening of the air vent hole and the exposed end of the plug body, it is more reliable. The pipe body can be kept in a sealed state.

As another method, a cap body is attached to the opening of the pipe body whose one end is closed, and the pipe body is closed, and the inside of the pipe body is exhausted and depressurized through an air vent passage penetrating the cap body. At the same time, a heat medium fluid flows in, and thereafter, a plug is inserted into a large-diameter portion formed on the terminal end side of the air vent passage to close it, and further, the cap is opened to the cap body. The air vent passage can also be sealed. Of course, the heat source pipe shall penetrate in the axial direction of the pipe body, and the heat source pipe and the pipe body shall be securely sealed. Further, as a further manufacturing method, a cap body having a heat source pipe insertion tubular body penetrated therein is attached to the opening of the pipe body having one end closed, and the pipe is closed. While passing the heat source pipe through the cylinder, the closed end of the pipe body is penetrated to seal the penetrated portion, and the open end of the heat source pipe in the heat source pipe passage cylinder is closed. Thereafter, the pipe body is evacuated and depressurized from the heat source pipe connecting cylinder, and a heat medium fluid is introduced. Thereafter, the space between the heat source pipe connecting body and the heat source pipe can be sealed. In the case of sealing, a method of caulking the heat source pipe through cylinder is considered. In this case, it is extremely effective for manufacturing a device having a heat source pipe having a heat transfer plate vertically provided, and the heat source pipe can be easily arranged in a vacuum pipe.

The present invention also relates to a method of using the above-described heat pipe, and can be applied to, for example, soil sterilization.

That is, the heat pipe is disposed horizontally 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 kill pests, pathogens, and the like.

At this time, since the heat pipe can be extended as needed to the required length through the joint member as described above, the piping work can be easily performed, and the heat pipe can be efficiently disposed and sterilized over the entire field. The effect can be improved.

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

In other words, the heat pipe is arranged on the inner surface of the bull house so that the heat source pipe is located at the bottom side of the vacuum pipe, and heats the inside of the bul house. Heat pipes with good heat transfer efficiency can be extended, and the heating inside the agricultural housing can be effectively performed at low cost. In addition, 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 in the planting tray so that the heat source pipe is located on the bottom side of the vacuum pipe. If such a tray is placed on a table or the like and used, the farmer does not need to bend down on the field to perform farming work as in the past, thus improving workability and reducing the burden. Moreover, such a tray can be used in a vegetable garden or the like, and it is not necessary to form a field, so that it can be easily placed on a veranda or the like of an apartment house to grow vegetables.

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

Furthermore, the present invention provides a fuel-efficient and efficient fuel pipe by disposing the heat pipe below the floor of a house such that the heat source pipe is located on the bottom side of the vacuum pipe. Floor heating can be constructed.

Hereinafter, embodiments of the present invention will be described 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 thereof, and FIG. 3 is a transverse sectional view thereof.

In FIGS. 1 to 3, reference numeral 1 denotes a copper vacuum pipe having a high thermal conductivity, which has closed end faces 10 and 10 at both ends to form a vacuum state, and is a heat medium fluid composed of ethanol. F is enclosed.

Reference numeral 2 denotes a heat source pipe arranged in a penetrating state close to the inner peripheral surface of the vacuum pipe 1 and made of copper similarly to the vacuum pipe 1, and circulating hot water heated by a boiler or the like (not shown) inside as a heat source.璟 It is possible. As a heat source, oil or the like may be used instead of hot water, or heat may be generated through a heater wire such as a nickel wire.

By the way, 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, stainless steel, and the like, may be made of synthetic resin. .

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

That is, in the present embodiment, the inner diameter of the heat source pipe 2 is made slightly smaller than 内径 of the inner diameter of the vacuum pipe 1 so that the amount of hot water as a heat source is made as small as possible while the fluid for the heat medium is used. F can be heated effectively, and the heated heat medium fluid F is vaporized, and the vapor is As shown by the arrow Π in Fig. 3, the vapor stagnation space Q 內 rises, is cooled and liquefied by the tube wall of the vacuum pipe 1, and descends and returns as shown by the arrow f2. Since the distance between the liquid surface of the heat medium fluid F and the top tube wall of the vacuum pipe 1 can be very short, the 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 pipe wall temperature of the heat pipe A can be increased uniformly and quickly. Therefore, the heat capacity of the heat source can be small. For example, even if a boiler is used, it can be covered with low fuel consumption.

Further, as shown in FIG. 4, the end 20 of the heat source pipe 2 is projected from each closed end face 10 of the vacuum pipe 1, and the ends 20, 20 are connected to each other via a joint member J. It is detachably connected to each other and is extendable.

The joint member J is detachably attached to the end portion 20 of the heat source pipe 2, and fixes the tube 3 through which the heat source can flow or can pass and the tube member 3 and the end portion 20. And fastening means.

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

Thus, 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, it is possible to significantly expand the applicable range and applications of heat pipe A.

Here, as another embodiment of the heat pipe A that replaces the above configuration, the one shown in FIGS. 5 to 8 will be described.

FIG. 5 is a sectional view of a heat pipe A according to a second embodiment, and FIG. 6 is a sectional view of the same. As shown in the figure, here, heat source pipe 2 was welded to the outer peripheral surface of vacuum pipe 1. It is mounted in the coaxial direction by such a method.

With such a configuration, since the heat source pipe 2 can be easily attached, 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 The heat transfer plate 22 is suspended almost all the way, and the heat medium fluid F is sealed in the vacuum pipe 1 until the lower part of the heat transfer plate 22 is immersed. And

With this configuration, the amount of the heat medium fluid F can be extremely small, and by using the small amount, the heat transfer efficiency can be improved and the surface temperature of the heat pipe A can be increased. .

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

table 1

Temperature measurement 1st embodiment 2nd embodiment 3rd embodiment

Heat-pipe heat, 'Hip-heat pipe Inlet temperature (T) 9 0 9 0 9 0 Outlet temperature (' C) 8 8.2 7 8 9, 10 8 8. 9 8 Surface temperature ('C) 8 2 8 4. 6 8 3.5

As is clear from Table 1, the surface temperature of the heat pipe A according to the third example is highest. This is thought to be because the amount of the heat medium fluid F was smaller than in the other examples, and the heat transfer efficiency was high and the amount was appropriate. Experimentally, the width of the heat transfer plate 22 was It was found that it was preferable to set the amount so that about 40% could be soaked.

In addition, as shown in Figs. 3, 6, and 8, when the lower part of the vacuum pipe 1 is covered with the heat insulating material C, the surface temperature of the upper part can be further increased, and the heat utilization effect can be enhanced. it can.

Naturally, also for the heat pipes A according to the second and third embodiments, the ends 20 of the heat source pipes 2 are projected from the respective closed end faces 10 of the vacuum pipe 1 so that the ends 20 and 20 are connected to each other. Can be connected and detachably connected to each other via a joint member J and can be extended. In each of the second and 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. You.

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

(Production method 1)

Fig. 9 to Fig. 11 show the general evacuation and filling method of the heat medium fluid F in the heat pipe A manufacturing method.

In the figure, reference numeral 5 denotes a vacuum evacuation and fluid filling device (hereinafter referred to as a filling device). A vacuum quote hose 51 having one end connected to a vacuum pump (not shown) via an on-off valve V; And a fluid hose 54 provided with a measuring device 53 in the middle thereof. V1 and V2 are open / close valves provided in the fluid hose 54.

As shown in Fig. 9, cap bodies 11 and 11 are attached and closed in advance at the rain end opening of the pipe body that will be the vacuum pipe 1 so that the two pipe bodies 11 and 11 can be penetrated. The heat source pipe 2 is attached to the heat source pipe, 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 cylinder 12 is connected to the cap body 11 on one side in advance. Then, the above-mentioned vacuum quoting hose 51 is connected to the air vent cylinder 12.

Then, by opening the on-off valve V and operating the vacuum pump, the inside of the pipe is evacuated and depressurized. Thereafter, the on-off valve V is closed and the vacuum pump is stopped.

As shown in 10, open the on-off valve V2 of the fluid hose 54, and pipe the heat medium fluid F weighed to a predetermined amount from the heat medium fluid storage tank 52 by the meter 53 from the air vent cylinder 12. Fill the body.

After that, the protruding portion of the air vent 12 from the cap body is swaged with 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 tube 12 is completely sealed by welding or the like.

(Production method 2)

FIGS. 12 to 14 show another manufacturing method.

First, a pipe body having 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 Manufacturing method 1 is used. Attach the cap body 11 to the opening, and first close both ends.

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

Then, as shown in FIG. 12, the vacuum suction hose 51 of the charging device 5 is connected to the air vent hole 13, and the charging device 5 is operated according to the above-described procedure to evacuate and depressurize the inside of the pipe and heat medium. Flow fluid F. Reference numeral 16 denotes a sharp connecting cylinder attached to the end of the hose 51 for connecting the vacuum quote hose 51 to the air vent hole 13.

Thereafter, as shown in FIG. 13, the stopper 15 is fitted into the stopper hole 14 by driving the stopper 15 into the stopper hole 14, the air vent hole 13 is closed, and the vacuum quote hose 51 is removed.

Next, as shown in FIG. 14, the opening of the air vent hole 13 and the exposed end of the plug 15 are sealed by welding or the like. According to this method, the vacuum pipe 1 is more securely sealed. (Production method 3)

FIGS. 15 to 19 show other manufacturing methods.

As shown in FIG. 15, this uses an advance / retreat type filling device 7, and the advance / retreat type filling device 7 has a stopper device 71 provided on a rail body 70 so as to be able to advance and retreat. The filling device 5 ′ having substantially the same configuration as the filling device 5 described above is connected to the capping device 71. Reference numeral 55 denotes a connecting pipe provided at the end of the filling section 5 '.

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

Further, one of the cap bodies 11 for closing the openings at both ends has an air vent passage 17 previously penetrated therethrough, and the air vent passage Π is larger than the passage 17.中継 The connecting cylinder 18 is threaded around the circumference. 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 to each other via the hand tube 19, and as shown in FIG. Exhaust gas is decompressed, and the heat medium fluid F is filled.

Thereafter, as shown in FIG. 17, the bolt-shaped plug 73 is screwed into the relay tube 18 while the plugging device 71 is advanced, and the air vent passage 17 is securely plugged. As described above, since the bolt-shaped plug 73 is used, the plug can be reliably and smoothly closed. Next, as shown in FIG. 18, the relay 简 18 is cut from the root, and as shown in FIG. 19, the rear of the bolt-shaped plug 73 in the relay tube 18 is welded and sealed, and the inside of the vacuum pipe 1 is sealed. Seal completely. In the case of welding and sealing, it is more preferable to fill with a plug-shaped material.

Further, in this case, the plug is formed as a bolt-shaped plug 73 by forming a screw portion on the inner peripheral surface of the relay tube 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 configuration. Large on the part side Any shape may be used as long as a diameter portion is formed, a plug is inserted into the large diameter portion by driving or the like, the plug is closed, and the air passage opening of the cap body 11 is sealed.

(Production method 4)

FIGS. 20 to 23 show other manufacturing methods. This method is suitable for a heat pipe A according to the third embodiment, that is, a heat pipe A provided with a heat source pipe 2 provided with a heat transfer pipe 22.

As shown in FIGS. 20 and 21, a cap body 11 in which a heat source pipe passing cylinder 9 is inserted is attached to the opening of the pipe body whose one end is closed. At this time, a caulking flange portion lia is formed on the periphery of the cap body 11 and caulked to the end of the pipe body via the 0 ring 8 to securely close the opening and seal. I do.

Then, the heat source pipe 2 is passed 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 opening end of the heat source pipe 2 in the heat source pipe passage cylindrical body 9 is closed with a heat source pipe stopper 25.

Thereafter, as shown in FIG. 22, the pipe body is evacuated and depressurized from the heat source pipe passage cylinder 9 using the charging device 5, 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 charging device 5 may be directly connected to the heat source pipe passage cylinder 9.

Thereafter, as shown in FIG. 23, the space between the heat source pipe passage cylindrical body 9 and the heat source pipe 2 is caulked and sealed, thereby sealing the pipe body. Then, the heat pipe A is separated from the charging device 5 to obtain a product. 9a is a caulking part.

Next, how to use the above-mentioned human pipe A will be described below.

(Soil disinfection method)

First, the soil disinfection method using the heat pipe A will be described with reference to FIG.

That is, in the soil disinfection method according to the present invention, pathogenic bacteria and pests in Since it is known that the part will die, the above-mentioned human pipe A is buried in the soil of the field and the fallow period before transplanting the seedlings for growing vegetables and other agricultural products The soil is heated by the heat pipe A to disinfect the soil, and then the seedlings are grown to protect the crops from pests and diseases.

In Fig. 24, B is a fallow field, and the heat pipes are extended to the required length through joint members J in the soil of a large number of ridges B1. A is buried horizontally. The size and number of the vacuum pipes 1 and the burial depth 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.

Table 2 Changes in soil density

¾ 3 Eggplant bacterial wilt occurrence

Treatment Number of surveys Partial Whole body Dead Sound

1 surface 0 0 0 8 Heat pipe 2 surfaces 0 0 0 8

3 sides 0 0 0 8

1 surface 1 0 2 5 Chlorpicrin 2 surfaces 0 1 2 5 Table 2 shows the changes in soil temperature caused by heat pipe A, and Table 3 shows the occurrence of eggplant wilt at places where soil was disinfected with heat pipe A and at places where it was disinfected with ku-lupiculin. . Eggplants grown for the experiment were planted by disseminating eight strains in the ridge B1 after disinfection, cutting the roots and visually inspecting for the presence of lesions.

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

As shown in Figure 25, the thermometers No. l to No. 7 in Table 1 are the thermometers No. l to No. 4 at 5 cm intervals from each heat pipe A in the horizontal direction. No. 5 thermometers were set at the buried position of heat pipe A, and No. 6 and No. 7 thermometers were set at 10 cm intervals in the height direction.

As shown in Table 2, it can be seen that 5 days after the heater was energized, the temperature reached 50 ° C over the entire area of the ridge B1.

And, as shown in Table 3, it was found that all the eight plants that had been disinfected with heat pipe A in soil were grown healthy in a three-site survey.

On the other hand, those who used chlorpicrin showed that none of them showed healthy growth in all of the three surveys. Two strains died in all surveys.

Thus, it can be seen that the soil disinfection method using the heat pipe A according to the present invention is more effective than soil disinfection using chlorpicrine, and furthermore, it has an adverse effect on the human body, There is no risk of causing pollution and no risk of causing pollution in the future, and it is safe.Moreover, compared with other disinfection methods using heat treatment, such as steam heating method, etc. By reducing the temperature of the heat source, fuel efficiency can be reduced, and geothermal energy, hot spring heat, and solar heat can be used as the heat source, resulting in significant energy savings.

(Heating method for agricultural house using heat pipe A)

Next, a method for heating an agricultural house using the heat pipe A according to the present invention will be described. This will be described with reference to FIG.

In Fig. 26, H is a bull house as an agricultural house, which is composed of a plurality of arched frames HI and a plurality of horizontal frames H2 connecting them, and is a transparent or cloudy film H3. Is constructed. B2 is a ridge formed in the house. The heat pipe A having the above-described configuration is horizontally disposed on the inner surface of the BULLHOUSE H.

In the present embodiment, a heat pipe A is appropriately connected to a joint member J shown in FIG. 4 in accordance with the entire length of the bullet house H, and two steps are provided at the lower portion of each inner side surface. A heat source (not shown) such as a boiler is connected to a heat source pipe 2 of a heat pipe A provided at an end through a connection hose A1 to circulate the heated hot water.璟 It is configured to be possible.

As described above, when the beat pipe A according to the present invention is used for heating a farm house, the heat generated by the heat pipe A can be uniformly distributed throughout the house, and the house can be efficiently heated.

In addition, the amount of hot water circulated to the heat source pipe 2 may be small, so that the boiler and the like can be downsized, and the amount of fuel used is small, so that heating can be performed at low cost. Moreover, as described above, geothermal energy, hot spring heat, and solar heat can be used as a heat source, so that a great energy saving effect can be obtained.

Moreover, according to this method, unlike the conventional hot air heating method, there is no possibility that hot air is directly applied to the crop, and the crop can be bred well.

(Planting tray with heat pipe A)

A further use of the heat pipe A according to the present invention will be described with reference to FIG. 27.

This is because the heat pipe A is placed horizontally on the planting tray E so that the mature pipe 2 is located at the bottom side of the vacuum pipe 1, and the soil in the tray E is heated. K can be heated to promote crop cultivation. M is a strawberry as a crop to grow You.

The planting tray E according to the present embodiment includes a styrene foam tray main body 60 provided with an HI section 61 for disposing a heat pipe A at the bottom, and an inner peripheral surface of the tray main body 60. A copper heat transfer plate 62 is provided so as to cover the heat transfer plate 62, and a rubber cover 63 is provided to cover the heat transfer plate 62 so that soil K, moisture, and the like do not directly touch the heat transfer plate 62. ing.

Then, the heat pipe A and the heat transfer plate 62 disposed in the concave portion 61 are brought into contact with each other to transfer heat to the entirety of the tray main body 60 so as to efficiently heat the soil K. They are trying to promote the growth of strawberries. Reference numeral 64 denotes a heat insulating material provided in the recess 61.

Further, the planting tray E may be placed on the ground, but can be placed on a placement table G having an appropriate height as shown in FIG.

By using the mounting table G in this way, the worker can perform the strawberry management work in an easy posture without bending down, so that the work load can be greatly reduced.

By the way, in the present embodiment, a plurality of heat pipes A can be connected and a plurality of planting trays E can be connected. For example, one heat pipe A is arranged on one tray body 60. It can also be used as a single planting tray E.

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

The material of the tray main body 60, the heat transfer plate 62, and the cover 63 are not limited to those described above, and any material may be used as long as the function is not impaired.

(Other ways of using Pipe Pipe A)

Next, other uses of Heat Pipe A outside the agricultural field are described below.

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

That is, as described above, a heat sink according to the present invention. Pipe A can be laid horizontally, so if it is installed under the floor of a house, the thickness of the bottom of the floor for storing heat pipe A can be reduced, and workability can be improved. , In terms of cost This is advantageous.

In addition, 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. Vehicle traffic can be safely performed. In particular, if there is a slope from the roadway to the parking lot, placing a heat pipe A under the slope can prevent slip accidents such as snow and freezing.

In the heat pipes according to the respective embodiments described above, the cross-sectional shapes of the vacuum pipe and the heat source pipe are circular, but the shapes of the vacuum pipe and the heat source pipe are not limited at all. Industrial applicability

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

(1) By using a vacuum pipe filled with a heat medium fluid and a heat source pipe penetrating close to the inner peripheral surface of the vacuum pipe, the heat medium pipe is used to heat the heat medium fluid. Heating can be efficiently performed as a whole, and the heat transfer efficiency can be improved. In addition, since the heat pipe can be arranged in a horizontal state, the use of the heat pipe can be expanded.

(2) 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 the heat source pipe is located above the heat source pipe. Since the steam retention space is formed, 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, and the size of the vacuum pipe If the amount of the heat medium fluid is adjusted by changing the temperature, the heat transfer amount can be easily adjusted.

(3) The heat source pipe is easy to install because it consists of a vacuum pipe filled with a heat medium fluid and a heat source pipe coaxially mounted on the outer peripheral surface of the vacuum pipe. The manufacturing efficiency is improved.

(4) The vacuum pipe penetrates through approximately the center of the vacuum pipe, and extends almost completely. And a heat source pipe with a heat transfer plate suspended vertically, and a heat medium fluid is sealed in a vacuum pipe until a part of the heat transfer plate is immersed. Good heat transfer efficiency.

(5) The ends of the heat source pipe are protruded from the respective closed end faces of the vacuum pipe, and the ends are detachably connected to each other via a joint member so as to be extendable. As a result, in addition to the effects of the above (1) to (4), the length can be freely adjusted according to the required length, and the degree of freedom of the layout can be significantly improved. You.

(6) A cap body is attached to the opening of the pipe body whose one end is closed, and the pipe body is closed. After that, the plug is inserted into a closing hole having a diameter larger than that of at least the air bleeding cylinder, and the air bleeding cylinder is plugged. By cutting off the protruding part of the air vent cylinder and fusing the cut part and the exposed end of the plug body, the vacuum pipe can be securely sealed and a high-quality heat pipe can be obtained. It can be obtained, and the air bleeding cylinder does not remain in a protruding state, so that it does not become an obstacle when arranging messages. In addition, there is no possibility that the protruding air vent cylinder is damaged and air flows into the inside.

(7) A cap body is attached to the opening of the pipe body whose one end is closed and closed, and the pipe body is evacuated and depressurized from the air vent passage penetrating the cap body, and the heat medium fluid After that, a plug is inserted into a large-diameter portion formed on the terminal end side of the air vent passage to close it, and further, the air passage opening portion of the cap is sealed. As a result, the vacuum pipe can be reliably sealed, and a high-quality heat pipe can be obtained.

(8) When a cap body with a heat source pipe passing through the pipe is attached to the opening of the pipe body whose one end is closed and closed, and the heat source pipe is passed through the heat source pipe passing body. At the same time, 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 passage cylinder is closed, and then the heat source pipe is closed.揷 through tube The inside of the pipe body is evacuated and depressurized, the fluid for the heat medium flows in, and the heat source pipe is then evacuated by sealing the space between the heat source pipe and the heat source pipe. It is easy to arrange inside the pipe.

(9) 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 disinfect it. Good heat pipes can effectively disinfect soil at low cost. Moreover, it is safe without any adverse effects on the human body or environmental pollution.

(10) The heat pipe is arranged horizontally on the inner surface of the bulhouse so that the heat source pipe is located on the bottom side of the vacuum pipe, and the inside of the bulhouse is heated. Heat pipes with good thermal efficiency can effectively heat agricultural houses II at low cost.

(11) Since the heat pipe is arranged horizontally on the planting tray so that the heat source pipe is located on the bottom side of the vacuum pipe, the tray is mounted on a table or the like. By using the farming equipment, farmers do not need to bend over to the fields to perform farming work as in the past, thus improving workability and reducing the burden.

(12) At the bottom of the planting tray, a concave portion for arranging a heat pipe is provided, and a heat transfer plate is provided so as to cover the inner peripheral surface of the planting tray. By bringing the heat transfer plate into contact with the heat pipe disposed in the recess, in addition to the effect of (11), the entire soil in the planting tray can be efficiently heated. Can be.

(13) Since the heat pipe is arranged horizontally below the floor of the house so that the heat source pipe is located on the bottom side of the vacuum pipe, effective floor heating with low fuel consumption is achieved. It can be carried out.

Claims

Scope of request

1. A vacuum pipe (1) filled with a heat medium fluid (F), and a heat source pipe (2) inserted close to the inner peripheral surface of the vacuum pipe (1) A characteristic heat pipe.

2. When the heat source pipe (2) is disposed horizontally with the heat pipe (2) positioned at the bottom side of the vacuum pipe (1), the heat source pipe (2) is placed in the fluid for mature medium (F). 2. The heat pipe according to claim 1, wherein the heat pipe is submerged and a vapor retention space (Q) is formed above the heat source pipe (2).

3. It consists of a vacuum pipe (1) filled with a heat medium fluid (F) and a heat source pipe (2) coaxially mounted on the outer peripheral surface of the vacuum pipe (1). Heat pipe

4-A vacuum pipe (1) and a heat source pipe (2) that penetrates substantially the center of the vacuum pipe (1) and has a heat transfer pipe (22) suspended over almost the entire length. A heat pipe characterized in that a heat medium fluid (F) is sealed in a vacuum pipe (1) until a part of the heat transfer plate (22) is immersed.

5. The 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. 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.

6. Attach the cap body (11) to the opening of the pipe body whose end is closed, close the pipe body, and remove the pipe body から from the air vent hole (13) penetrating the same cap body (11). At the same time as the evacuation pressure is reduced, the heat medium fluid (F) flows into the air vent hole, and thereafter, a hole is formed perpendicular to the air vent hole (13). A plug (15) is inserted into the hole (14) to close the air vent hole (13), and furthermore, a protruding portion of the air vent hole (13) is cut off, and the cutting point and the plug ( 15. A method for manufacturing a heat pipe, which comprises sealing the exposed end of step 15).

7. Attach the cap body (11) to the opening of the pipe body whose one end is closed, close the cap body, and exhaust the pipe body from the air vent passage (17) penetrating the same cap body (11). The pressure is reduced and the heat medium fluid (F) flows in. Thereafter, a plug (73) is inserted into a large-diameter portion (18) formed at the end of the air vent passage (17), and the plug is closed. Furthermore, a method for manufacturing a heat pipe, which comprises sealing an opening of an air vent passage of the cap body (11).

8. At the opening of the pipe whose end is closed, a cap body (11) with a heat source pipe insertion cylinder (9) penetrated is attached and closed, and the heat source pipe insertion cylinder ( 9), the heat source pipe (2) is passed through, and the closed end (10) of the pipe body is penetrated to seal the penetrating portion. ) The open end of the heat source pipe (2) is closed, and then the inside of the pipe is exhausted and depressurized from the heat source pipe passage cylinder (9), and the heat medium fluid (F) flows in. A method for producing a heat pipe, characterized by sealing between the heat source pipe (9) and the heat source pipe (2).

9. The heat pipe (A) according to any one of claims 1 to 5, wherein the heat source pipe (2) is positioned on the bottom side of the vacuum pipe (1). A method of using heat pipes, which is installed horizontally inside and heat disinfects the soil.

10. The heat pipe (A) according to any one of claims 1 to 5 is used for agricultural use such that the heat source pipe (2) is located on the bottom side of the vacuum pipe (1). A method of using a heat pipe, which is installed horizontally on the inner surface of the house (H) and heats the inside of the agricultural house (H).

11. Planting the heat pipe (A) according to any one of claims 1 to 5 such that the heat source pipe (2) is located on the bottom side of the vacuum pipe (1). A method of using a heat pipe characterized by being installed horizontally in the tray (E).

12. At the bottom of the planting tray (E), a recess (61) for arranging the heat pipe (A) is provided, and the inner peripheral surface of the planting tray (6) is covered. A heat transfer plate (62) is disposed on the heat transfer plate (62), and the heat transfer plate (62) is brought into contact with the heat pipe (A) disposed in the four parts (61). Use of the heat pipe described in claim 11

13. The heat pipe (A) according to any one of claims 1 to 5 is connected to a house so that the heat source pipe (2) is located on the bottom side of the vacuum pipe (1). A method of using a heat pipe, which is installed horizontally below the floor.