JPH0577306U - Heat pipe type snow melting unit panel - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a unit panel that facilitates formation of a snow melting road surface. [Structure] A plurality of heat pipes 11 arranged substantially parallel to each other and a hot water pipe 13 arranged on one end side of these heat pipes 11 and connected to one end of each heat pipe 11 so as to be able to exchange heat While being embedded in the board 20, the connection end of the hot water pipe 13 is provided so as to project at a predetermined location of the concrete board 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a snow melting unit panel having a heat retaining / heating function using hot water as a heat source.

[0002]

[Prior Art]

 Hot water is widely used as a heat source (or heat medium) for melting snow on roads and roofs, but in the structure where hot water is directly supplied to the buried pipe, the temperature difference between the upstream side and the downstream side becomes large. , It is difficult to perform uniform snow melting. Therefore, conventionally, attention has been paid to the excellent heat conductivity and temperature uniformity of the heat pipe, and by utilizing this, the heat of the hot water is evenly distributed and supplied over a wide range to perform uniform snow melting. Various attempts have been made. For example, when melting snow on a road, a large number of heat pipes are buried just below the road surface, and one end of the heat pipe is connected to a hot water pipe buried in a roadside strip so that heat can be transferred to heat the water. It is configured to be distributed by a pipe in a wide range just below the road surface.

[0003]

[Problems to be solved by the device]

 However, in order to install such a heat pipe type snow melting device on a road etc., it is necessary to place the heat pipe device on the foundation of the road etc. and then pour concrete or asphalt to embed the heat pipe device. As a result, there was a problem that the amount of work on site increased, resulting in a longer construction period on site, which hindered the passage of roads.

Further, since the heat pipe device is mounted on the foundation such as the road and the concrete etc. for embedding the heat pipe device are all set up in the field, the influence on the heat pipe, the hot water pipe or its connecting portion is various. Therefore, there is a possibility that the heat transport characteristics and the heat transfer characteristics may vary and the reliability may deteriorate.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a snow melting unit panel capable of shortening the construction period at the installation site and making the quality of the snow melting device uniform. It is intended.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a plurality of heat pipes arranged substantially parallel to each other and one end portion of each heat pipe, and one end portion of each heat pipe is connected so that heat can be transferred. The hot water pipe is embedded in the concrete plate, and the connecting end of the hot water pipe is provided so as to project at a predetermined location of the concrete plate.

[0007]

[Action]

 In this invention, the laying work is completed by laying the concrete board in a predetermined place and connecting the ends of the hot water pipes in the adjacent panels. Since the heat pipes and hot water pipes can be buried in this concrete plate in a dedicated facility such as a factory, it is possible to obtain homogeneous panels and to lay it in a short period of time.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. This invention is basically composed of a precast concrete panel unit 1 in which a heat pipe unit is buried. When the snow is melted on the road by this heat pipe type snow melting device, the size in the width direction of the road is measured. Accordingly, a plurality of device units 2 (see FIG. 5), which are a combination of several types of unit panels 1 having slightly different structures, are installed on the road foundation along the longitudinal direction of the road.

FIGS. 1 to 4 show three types of first to third unit panels 1A, 1B and 1C constituting the device unit 2, but the basic structures are the same. , The first unit panel 1A shown in FIGS. 1 and 2 will be described in detail, and the other second and third unit panels 1B and 1C will be described only regarding the differences from the first unit panel 1A. In addition, an example in which the road is melted will be described.

The first unit panel 1A is composed of a heat pipe unit 10 and a precast concrete block 20 placed so as to embed the heat pipe unit 10. The heat pipe unit 10 includes a heat radiating pipe 11 which is a heat radiating portion arranged in the longitudinal direction K of the concrete block 20, a header pipe 12 which is a heating portion to which one end of the heat radiating pipe 11 is attached, and the header. The hot water pipe 13 is provided so as to penetrate through the pipe 12, and hot water as a heat source flows through the pipe 12. The header portion has a double pipe structure of the header pipe 12 and the hot water pipe 13.

The radiating pipe 11 communicates with a header pipe 12 whose one end is open, and the other end side is sealed, and a wick that promotes circulation of a working fluid in the radiating pipe 11 by a capillary pressure. Are provided as needed. When the header pipe 12 side is used in a state of being inclined downward from the heat radiating pipe 11 side, the working fluid recirculates due to gravity, so the wick may not be provided.

The header pipe 12 is arranged on the end side of the concrete block 20 so as to be orthogonal to the heat radiating pipe 11, and the six heat radiating pipes 11 arranged at a predetermined pitch along the width direction of the concrete block 20. It is connected to one end side. Here, the header pipe 12 is divided into three short pipes whose both ends are sealed by end plates so that the two heat radiation pipes 11 are supported by the header pipe 12.

The hot water pipe 13 is a portion that penetrates and projects into the header pipe 12, and is bent at 90 degrees on the end side in the width direction of the concrete block 20, so that the heat radiating portion 13 a along the heat radiating pipe 11 is formed. The concrete block 20 can be directly heated by the heat radiation portion 13a. The inlet portion 13b of the hot water pipe 13 projects outward from the side surface of the concrete block 20 (unit panel 1), and the outlet portion 13c of the hot water pipe 13 is bent at 90 degrees as shown in FIG. It projects to the back side of the unit panel 1).

As shown in FIGS. 1 and 2, the concrete block 20 is a plate-shaped block having a thickness smaller than the lengths in the longitudinal direction and the width direction, and the whole of the heat pipe unit 10 embedded in the concrete block 20. Is heated evenly. In addition, reinforcing bars or the like (not shown) for maintaining strength may be embedded in the concrete block 20 as needed.

In the heat radiation pipe 11 and the header pipe 12 (excluding the portion of the hot water pipe 13), the non-condensable gas is degassed, and then a working fluid such as water or chlorofluorocarbon is enclosed in the hot water. When hot water is circulated in the pipe 13, the heat pipe unit 10 functions as a so-called heat pipe heat exchanger. Therefore, in this heat pipe type snow melting device, if snow falls on the surface of the concrete block 20 of the unit panel 1, the working fluid in the liquid phase in the header pipe 12 is heated by the hot water in the hot water pipe 13 and is evaporated. The steam moves to the side of the heat dissipation pipe 11, and then the steam gives heat to the concrete block 20 via the heat dissipation pipe 11 to melt the snow on the concrete block 20. The working fluid deprived of heat by the concrete block 20 is condensed in the heat radiating pipe 11, returns to the header pipe 12 side by the action of wick or gravity, and is heated and evaporated again by the hot water in the hot water pipe 13. The heat transfer is repeated by moving to the heat radiating pipe 11 side.

In the second unit panel 1B shown in FIG. 3, heat radiating portions 13a are formed on both the inlet side and the outlet side of the hot water pipe 13, and the inlet / outlet parts 13b and 13c of the hot water pipe 13 are both provided. It is provided so as to project to the back surface side of the concrete block 20. In addition, in the third unit panel 1C shown in FIG. 4, the heat radiating portion 13a is provided on the inlet side of the hot water pipe 13, and the inlet portion 13b of the hot water pipe 13 is provided so as to project to the back surface side of the concrete block 20. The outlet portion 13c is provided so that the side surface of the concrete block 20 projects into the alligator.

When the road is melted by the heat pipe type snow melting device using the above-mentioned three types of unit panels 1A, 1B, 1C, as shown in FIG. 5, the second unit panel 1B is provided on both sides in the width direction. Arranging the first and third unit panels 1A, 1C, the three unit panels 1A, 1B, 1C extending in the width direction of the road form a device unit 2, which is arranged in the longitudinal direction of the road. Arrange a plurality.

That is, after arranging the device units 2 on the base of the road so that the rear surface of the unit panel faces downward and laying out the width of the road, as shown in FIG. The projecting hot water pipe 13 is connected to each of the inlet portions 13b and 13c by a short pipe in a U shape. Similarly, the device units 2 consisting of three unit panels 1A, 1B, and 1C are laid out along the longitudinal direction of the road as much as necessary, and the inlet / outlet portions 13b and 13c of the hot water pipe 13 are formed into U-shaped short pipes 30. When connected, a concrete road with a heat pipe type snow melting device is completed. Then, as shown in FIG. 5, a supply pipe 31 for supplying hot water and a return pipe for returning hot water are provided on both sides (both sides in the width direction of the road) of the laid first and third unit panels 1A, 1C. 32, and the supply pipe 31 and the return pipe 32 are connected to the inlet / outlet portions 13b and 13c of the hot water pipe 13 protruding from the side surfaces of the first and third unit panels 1A and 1C, respectively. It is possible to supply hot water to the water, and this heat pipe type snow melting device can melt snow on the road.

Since the heat pipe type snow melting apparatus described above is composed of the unit panel 1 of precast concrete in which the heat pipe unit 10 is buried, it is only necessary to lay the unit panel 1 on the road to heat pipe the concrete road. A snow-melting device can be provided to shorten the road construction period. In this case, since the hot water pipes 13 can be connected between the unit panels 1 after the unit panels 1 are laid out, the site work becomes easy.

Since the unit panel 1 is manufactured in a factory under a certain quality control and requires almost no on-site work, the quality of this heat pipe type snow melting device provided on the road should be good. It is possible to improve the reliability of the heat pipe type snow melting device at the same time.

The present invention is not limited to the heat pipe type snow melting device provided on the road, but can be applied to a small road such as a slope of a multilevel parking lot. Moreover, the structure of the unit panel (the number and length of the heat radiating pipes, the length of the header pipe, the position of the connection end portion in the arrangement of the hot water pipes, etc.) is not limited to the above-mentioned embodiment, and may be changed as necessary. It can be provided at a location.

[0022]

[Effect of the device]

 As is clear from the above description, according to the present invention, since the heat pipe and the hot water pipe are pre-assembled and the whole is configured as one unit, it is extremely easy to lay a snow melting device using hot water as a heat source. In addition, the construction period can be shortened, and manufacturing at a fully equipped factory is possible, which can improve the quality and reliability of the snow melting equipment.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a sectional view of a second unit panel.

FIG. 4 is a sectional view of a third unit panel.

FIG. 5 is a plan view of a road in which a plurality of unit panels are laid side by side.

FIG. 6 is a view taken along line VI-VI in FIG.

[Explanation of symbols]

 1 Unit Panel 10 Heat Pipe Unit 11 Heat Pipe 12 Header Pipe 13 Hot Water Pipe 13b Hot Water Pipe Inlet 13c Hot Water Pipe Outlet 20 Concrete Block

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shinichi Sugihara 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Koichi Masuko 1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric wire company (72) Inventor Masahiko Ito 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd. (72) Yuuji Saito 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric line Incorporated (72) Takashi Chiba 1007 Izumisawa, Chitose, Hokkaido 151 151 Fujikura, Hokkaido

Claims (1)

[Scope of utility model registration request] 1. A concrete plate comprising a plurality of heat pipes arranged substantially parallel to each other and a hot water pipe arranged at one end side of these heat pipes and having one end portion of each heat pipe connected so as to be able to exchange heat. A heat pipe type snow melting unit panel, which is embedded and is provided with a connection end portion of the hot water pipe projecting at a predetermined location of the concrete plate.