JPH0742803U - Heat pipe type snow melting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an inexpensive heat pipe type road snow melting device having a structure that does not easily cause problems such as leakage of hot water. In the heat pipe type road snow melting device 1, hot water headers 10 to which hot water is supplied are buried obliquely with respect to a roadway at a predetermined interval at a lower part of a walkway board, and the hot water headers 10 of the heat pipes 20 are provided. A straight pipe into which the end portion on the evaporation portion side is inserted and a straight pipe connected to the end portion of the straight pipe opposite to the insertion portion of the heat pipe 20 via an elbow and to the adjacent straight pipe of the hot water header 10. It consists of a short tube.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a road snow melting device that collects heat from hot water with a heat pipe and melts snow accumulated on a road part of a road by the heat.

[0002]

[Prior art]

 From the viewpoint of ensuring traffic safety and convenience of daily life, snow removal on roads is an essential item in areas with heavy snowfall. Therefore, recently, heat pipes with high heat transport capacity and temperature uniformity have been laid under the road surface to reduce road running costs and labor saving snow.

FIG. 3 shows an example of a road snow melting device using the above-mentioned hot water as a heat source of a heat pipe. In this snow melting device 1, a plurality of U-shaped header pipes 12 are continuously arranged at equal intervals, and a header pipe 13 is arranged along a shoulder portion E of the road. Inside the header pipe 13, an electric heater or the like is used. Hot water heated to a predetermined temperature is supplied and circulated. The evaporation portion 20a of the heat pipe 20 is hermetically inserted into each U-shaped header pipe 12, so that the surface of the evaporation portion 20a is heated by contacting the hot water flowing in the header pipes 12 and 13. Has become. Further, each heat pipe 20 is installed so that the respective condensation section 20b is slightly higher than the evaporation section 20a.

Therefore, when hot water is circulated in the header pipes 12 and 13 during snowfall or when there is snow on the road surface, the evaporation portions 20a of the heat pipes 20 buried under the road surface in the roadway portion are heated respectively. The enclosed working fluid evaporates, and the vapor moves to the condenser 20b. Then, in the condensing unit 20b, the vapor of the working fluid releases the latent heat of vaporization that has been heat-transported, condenses, returns to the working fluid in the liquid phase, and returns to the vaporizing unit 20a again. At this time, snow is melted on the road surface by the heat released from the condensing unit 20b arranged under the road surface.

[0005]

[Problems to be solved by the device]

 However, in the conventional heat pipe type snow melting device, the inflexible steel pipe hot water header and the structurally weak joint are relatively surface layers in the roadbed, for example, GL- (from the road surface) 10 to 15 cm. Since it is buried to a certain extent, its reliability decreases due to vibration when vehicles pass by and vibration and heat generated by the pavement driving process during road repair work, causing leakage of hot water, etc. There is a possibility that the problem of occurs. Furthermore, if a problem such as leakage of hot water occurs in the hot water header and joints, the vehicle, etc. must be closed to repair it.

In view of the above circumstances, the present invention provides a heat pipe type road snow melting device having a structure in which vibration and the like are less likely to be applied to the hot water header and the joint portion, and problems such as leakage of hot water are less likely to occur. To aim.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention aims to achieve the above-mentioned object, in a heat pipe type road snow melting device that uses hot water flowing in a hot water pipe as a heat source, a hot water header to which hot water is supplied And the hot water header is inserted through the elbow at the end of the straight pipe into which the end of the heat pipe on the evaporator side is inserted and the end of the straight pipe opposite to the insert part of the heat pipe. It is characterized in that it is composed of a straight short pipe connected and connected to the straight pipe of the adjacent hot water header.

[0008]

[Action]

 As mentioned above, by providing the hot water header on the sidewalk, the size limitation due to its shape can be relaxed, that is, its shape can be made relatively free, so that the hot water header and hot water header piping can be Can be integrally configured, which is advantageous in terms of thermal efficiency. Moreover, since a straight pipe can be used for the hot water header, the manufacturing cost of the device can be reduced.

Further, since the inflexible hot water header and the structurally fragile joint part are provided on the sidewalk part while avoiding the roadway part, a large load or vibration is not applied when the vehicle is running, and therefore, it is desired. The leakage of hot water due to damage to the hot water header and the joint is prevented.

[0010]

【Example】

 Next, an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 indicates a snow melting device, and FIG. 1 (B) shows a state in which the snow melting device 1 is buried in a road (roadway portion D, sidewalk portion S). Here, the snow melting device 1 includes a plurality of hot water headers 10 and a plurality of corrugated pipe heat pipes 20. As shown in FIG. 1 (A), the hot water header 10 is buried in the sidewalk portion S obliquely with respect to the roadway portion D, and the heat pipe 20 extends from the hot water header 10 to snow on the roadway portion D. It is buried in the road D to melt snow.

FIG. 2 is an enlarged detailed view of the hot water header 10. In FIG. 2, the evaporation part 20 a of the heat pipe 20 is inserted into the hot water header 10 so as to come into contact with the hot water inside the hot water header 10, and is hermetically held by the joint seal 30. Furthermore, the hot water header 10 is composed of the straight pipe 14, the 90 ° elbow 16 and the LA coupling 18, and the hot water header 10 also functions as the hot water header pipe and is constructed as one.

Next, the operation of the present invention configured as described above will be described. When hot water is supplied to the hot water header 10 during snowfall, when the road surface is frozen, or when there is snow, the evaporation section 20a of each heat pipe 20 inserted in each hot water header 10 is heated, The working fluid enclosed in each of them evaporates, and the vapor moves to the condensers 20b respectively disposed under the road surface of the road portion D. The working fluid vapor releases heat in the condensing unit 20b, condenses and returns to the liquid-phase working fluid, flows through the heat pipe 20 to the lower side, and returns to the evaporating unit 20a. At this time, the ice and snow on the road surface are melted by the heat released from the condensing unit 20b arranged below the road surface.

That is, according to the snow melting device 1 of this embodiment, the inflexible hot water header 10 made of steel pipe and the structurally fragile joint portion 30 are provided in the sidewalk portion S while avoiding the road portion. No large load or vibration is applied when the vehicle is running. Therefore, leakage of hot water due to damage to the hot water header 10 and the joint portion is prevented. Further, even if the width of the walkway portion S is narrow, since the steaming portion 20a of the heat pipe 20 is inserted in the straight pipe 14 which is a part of the hot water pipe, the heat pipe 20 evaporating portion 20a of the heat pipe 20 is inserted in the hot water header 10. The length can be made sufficiently long, and the hot water header 10 also functions as a hot water header pipe and is integrally configured, so that the thermal efficiency of the entire snow melting device 1 can be increased.

Further, the hot water header 10 can be configured by using the straight pipe 14, the 90 ° elbow 16, and the LA coupling 18, that is, the hot water header 10 has a mechanical structure such as the U-shaped header pipe 12 (see FIG. 3). Since there is no target bend part, its reliability is improved and its processing cost can be reduced. Therefore, the useful life of the snow melting device 1 can be extended and the cost can be reduced.

[0015]

[Effect of device]

 As is clear from the above description, the present invention improves the reliability because the joint between the hot water header and the steaming part of the heat pipe is installed on the sidewalk and there is no mechanical bend part in the hot water header. Therefore, it is possible to dramatically reduce the occurrence of water leakage accidents and extend the service life of the snow melting device. In addition, repair work can be easily performed in the event of a water leak.

Further, by constructing the hot water header and the hot water header pipe integrally, and by constructing the hot water header as one unit, the thermal efficiency of the snow melting device can be improved.

Further, since there is no mechanical bend portion in the hot water header, no special processing (bender processing) is required, so that the cost of the snow melting device can be reduced.

[Submission date] May 18, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

FIG. 3 shows an example of a road snow melting device using the above-mentioned hot water as a heat source of a heat pipe. The snow melting apparatus 1, predetermined by the U-shaped header pipe 12 is a header pipe 13, which is plural continuously arranged equidistantly disposed along the shoulder portion E of the road, the hot water boiler or the like in the inside of the header pipe 13 Hot water heated to the temperature is supplied and circulated. The evaporation portion 20a of the heat pipe 20 is hermetically inserted into each U-shaped header pipe 12, so that the surface of the evaporation portion 20a is heated by contacting the hot water flowing in the header pipes 12 and 13. Has become. Further, each heat pipe 20 is installed so that the respective condensation section 20b is slightly higher than the evaporation section 20a.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

Therefore, when hot water is circulated in the header pipes 12 and 13 during snowfall or when there is snow on the road surface, the evaporation parts 20a of the heat pipes 20 buried under the road surface in the roadway portion are heated respectively. The enclosed working fluid evaporates, and the vapor moves to the condenser 20b. Then, in the condensing unit 20b, the vapor of the working fluid releases the latent heat of vaporization that has been heat-transported, condenses, returns to the working fluid in the liquid phase, and returns to the vaporizing unit 20a again. At this time, by the heat released from the disposed condensate portion 20b under the road surface, anti-freezing of snow melting and road on the road surface is carried out.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005]

[Problems to be solved by the device]

However, in the conventional heat pipe type snow melting apparatus, the hot water header made of inflexible steel pipe and the structurally fragile joint are relatively surface layers in the roadbed, for example, GL-10 (from the road surface) 10 to 15 cm. because it is buried to a degree, vibration when the vehicle is passing, also due to vibration Contact and heat generated by pouring step of the pavement during repair work of roads, its reliability beat low over time, Problems such as leakage of hot water may occur. Furthermore, if a problem such as leakage of hot water occurs in the hot water header and joints, the vehicle etc. must be closed to repair it.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

[Action]

As described above, by providing the hot water header on the sidewalk portion, the atmosphere of the restriction by the shape becomes gentle, i.e. Ru can be relatively freely its shape. Also, it is possible to use a straight hot water header may Rukoto lowering the manufacturing cost of the device.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

Further, since the inflexible hot water header and the structurally fragile joint part are provided on the sidewalk part while avoiding the roadway part, a large load or vibration when the vehicle is running is not applied, and therefore, it is desired. The reliability of the hot water header and the joint can be improved over time.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

FIG. 2 is an enlarged detailed view of the hot water header 10. In FIG. 2, the evaporation part 20 a of the heat pipe 20 is inserted into the hot water header 10 so as to come into contact with the hot water inside the hot water header 10, and is hermetically held by the joint seal 30. In addition, the hot water header 10 is straight 14 and is composed of a 90 ° elbow 16, LA cup-ring (or socket) 1 8, hot water header 10 also functions as a hot water header piping, and the one.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Next, the operation of the present invention configured as described above will be described. When the hot water is supplied to the hot water header 10 during snowfall, when the road surface is frozen, or when there is snow, the evaporation part 20a of each heat pipe 20 inserted in each hot water header 10 is heated, The working fluid enclosed in each of them evaporates, and the vapor moves to the condensers 20b respectively disposed under the road surface of the road portion D. The working fluid vapor releases heat in the condensing unit 20b, condenses and returns to the liquid-phase working fluid, flows through the heat pipe 20 to the lower side, and returns to the evaporating unit 20a. At this time, the heat released from the condensing unit 20b arranged under the road surface prevents snow from melting and freezing on the road surface.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Further, the hot water header 10, the straight pipe 14 and, since it is possible to constitute using 90 ° elbow 16, LA couplings in g (socket) 1 8, i.e. U-shaped header pipe 12 (see FIG. 3) Since there is no mechanical bend part like the above, the reliability is improved and the processing cost can be reduced. Therefore, the service life of the snow melting device 1 can be extended and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention,
(A) shows a horizontal sectional view, and (B) shows a vertical sectional view.

FIG. 2 is an enlarged detailed view of the hot water header shown in FIG.

FIG. 3 is a schematic diagram showing an example of a conventional technique.

[Explanation of symbols]

1 ... Heat pipe type snow melting device, 10 ... Hot water header,
12 ... U-shaped header pipe, 13 ... Header pipe, 14 ... Straight pipe, 16 ... 90 ° elbow, 18 ... LA coupling, 20 ... Heat pipe (corrugated pipe), 20a
... evaporation part, 20b ... condensation part, 30 ... junction seal D
… Road part, E… shoulder part, S… sidewalk part.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 18, 1994

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] 1 ... Heat pipe type snow melting device , 10 ... Hot water header ,
12 ... U-shaped header pipe , 13 ... Header pipe , 14 ... Straight pipe , 16 ... 90 ° elbow , 18 ... LA coupling
(Socket), 20 ... Heat pipe (corrugated tube) , 20a ... Evaporating part , 20b ... Condensing part , 30 ...
Joining seal , D ... Roadway part , E ... Road shoulder part , S ...
Sidewalk part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takashi Chiba 1007 Izumisawa, Chitose, Hokkaido 151 151 Hokkaido Fujikura Co., Ltd. (72) Shinji Ishii 1007 Izumisawa, Chitose, Hokkaido 151 151 Fujikura, Hokkaido (72) Inventor Mikiyuki Ono 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Stock Company

Claims (1)

[Scope of utility model registration request] 1. A heat pipe type road snow melting device using hot water flowing in a hot water pipe as a heat source, wherein a hot water header to which hot water is supplied is buried obliquely with respect to a roadway at a predetermined interval in a lower part of a walkway board, The hot water header is a straight pipe into which the end of the heat pipe on the evaporator side is inserted, and the end of the straight pipe opposite to the insertion part of the heat pipe is connected via an elbow and is adjacent to the hot water header. A heat pipe type snow melting device comprising a straight short pipe connected to a straight pipe.