JPH0573008U - Heat pipe type snow melting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a snow melting device capable of effectively utilizing the heat of drainage flowing in a gutter. [Structure] The heat of the heat source water W flowing in the gutter 1 is carried to a position directly below the road surface 20 by the heat pipe 3 and
In the heat pipe type snow melting apparatus for heating a plurality of heat pipes, one end portion of the plurality of heat pipes 3 is arranged in the gutter 1 in a plurality of stages at predetermined intervals in the vertical direction, Flow paths K1 and K2 are formed between them, and the other end of each heat pipe 3 is buried immediately below the road surface 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat pipe type snow melting apparatus for melting snow on a road by using heat source water in a gutter.

[0002]

[Prior Art]

 Factory wastewater and domestic wastewater have a certain temperature and can be used as heat sources for snow melting. Therefore, one end side (heating part) of the heat pipe is installed in the gutter of the road on which these heat source water flows, and the other end side (heat dissipation part) is installed below the road surface of the road to melt snow on the road surface. A heat pipe type snow melting device using a gutter that performs the above is conventionally known.

FIGS. 3 and 4 show an example of such a heat pipe type snow melting device utilizing a side groove. In this snow melting device, the heating units 30 of the plurality of heat pipes 3 are obliquely arranged in a line at a predetermined pitch at the bottom of the gutter 1, and the heat radiation units 31 of the heat pipes 3 are arranged below the road surface 20 of the road 2 at a predetermined pitch. The heat pipe 3 in the gutter 1 is curved near the side wall of the gutter 1 and extends through the side wall in the width direction of the road 2 while being aligned in a row at the bottom of the gutter 1. Mortar is cast on the heating portion 30 of the heat pipe 3 thus formed to form a mortar block 40, and the heat source water W flows on the mortar block 40.

The working fluid in the heating section 30 of the heat pipe 3 is heated and evaporated by the heat source water W of the gutter 1 through the mortar block 40 and moves to the heat radiating section 31 side, and its vapor is radiated in the heat radiating section 31. Heat is applied to the upper road surface 20 to melt the snow. Further, the working fluid in the heat radiating section 31 cooled from the road surface 20 side is condensed and recirculated to the heating section 30 again, and the same heat transport is repeated.

Here, the heat radiating portion 31 of the heat pipe 3 generally needs to be elongated in the width direction of the road 2, and the length L of the heating portion 30 of the heat pipe 3 is set in the gutter 1 by an amount commensurate with this. However, since the size M of the side groove 1 in the width direction is constant, the heating portion 30 of the heat pipe 3 has a side wall with an inclination angle θ with respect to the longitudinal direction of the side groove 1, as shown in FIG. It is necessary to arrange it in 1. Therefore, the arrangement pitch P1 of the heating portion 3 of the heat pipe 3 in the side groove 1 and the inclination angle θ determine the arrangement pitch P2 of the heat radiation portion 30 of the heat pipe 3.

[0006]

[Problems to be solved by the device]

 However, in the above-described conventional snow melting device, since the heating portions 30 of the heat pipe 3 are only arranged in a horizontal row at the bottom of the gutter 1, the heat of the heat source water W 1 flowing on the upper side of the gutter 1 is not sufficiently utilized, There is an inconvenience that the heat of the heat source water W in the gutter 1 cannot be used until the temperature thereof becomes sufficiently low.

The arrangement pitch P2 of the heat radiating portion 31 of the heat pipe 3 is determined by the arrangement pitch P1 of the heating portion 30 of the heat pipe 3 in the side groove 1 and the inclination angle θ. The pitch P1 cannot be made too small in order to satisfactorily absorb heat to the heat source water W, and there is a limit. Therefore, the number of heat pipes 3 that can be installed is limited, and as a result, the pitch of the heat radiating portion 31 is arranged. Since P2 is increased to cover the snow melting range, there is a possibility that the snow of the road surface 20 cannot be sufficiently melted due to the fact that the heat of the heat source water W cannot be effectively used.

The present invention has been made in view of the above circumstances, and provides a heat pipe type snow melting device capable of effectively melting snow on a road surface by fully utilizing the heat of heat source water in a gutter. The purpose is to do.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention relates to a heat pipe type snow melting device that heats the road surface by transporting the heat of the heat source water flowing in the gutter to the surface directly below the road surface by a heat pipe. Portions are arranged in the vertical direction at predetermined intervals in the side groove, and a flow path is formed between one end portions of these heat pipes, and the other end portion of each heat pipe is further formed. It is characterized by being buried right under the road surface.

[0010]

[Action]

 Also in the snow melting device of this invention, one end of the heat pipe is heated by the heat source water flowing in the gutter, and the heat pipe conveys the heat to the other end just below the road surface to radiate the heat, thereby heating the road surface. .. In this way, the heat pipe absorbs the heat of the heat source water at one end, but since the end of the heat pipe is arranged in multiple steps inside the gutter, the heat pipe of the heat pipe that comes into contact with the heat source water The area of the end portion becomes large, and as a result, more heat of the heat source water can be absorbed by the heat pipe and used for snow melting.

[0011]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 and 2, the gutter 1 is provided at the end of the road 2 along the longitudinal direction (vertical direction in FIG. 2) and collects wastewater W such as factory wastewater and domestic wastewater and supplies it to the wastewater pipe. For example, a plurality of U-shaped concrete blocks 10 having an open upper part are connected to each other, and these are buried in the ground so that their upper parts are located at the same level as the road surface 20 of the road 2. .. The drainage W in the gutter 1 generally has a temperature that can be fully utilized as a heat source for snow melting, and thus serves as heat source water for this heat pipe type snow melting apparatus.

The road 2 having the gutter 1 is, for example, concrete 21 (or asphalt may be used) placed on the roadbed, and the road surface 20 is inclined so as to descend toward the gutter 1. Therefore, rainwater and thaw water can be collected in the gutter 1.

The above heat pipe type snow melting apparatus is mainly composed of a plurality of heat pipes 3, and these heat pipes 3 penetrate the side wall 10a of the concrete block 10 of the side groove 1, and one end side thereof is the side groove 1 A heating section 30 is provided inside, and the other end side is buried in the concrete 21 of the road 2 to form a heat radiation section 31. The heat pipe 3 is a known one in which a working fluid (for example, water or chlorofluorocarbon) is enclosed in a thin cylindrical pipe having a closed structure in which non-condensable gas such as air is degassed, and if necessary, a wick is provided inside. Is provided.

First, the heating unit 30 of the heat pipe 3 has an inclination angle θ with respect to the longitudinal direction of the side groove 1 in order to secure a predetermined length L in the side groove 1 as in the conventional device. The gutters 1 are horizontally arranged on the bottom portion 10b of the concrete block 10 at a predetermined pitch P1. And these heating parts 30 are located in two steps in the side groove 1. That is, a group of heating units 30 is embedded in mortar and bound to form a mortar block 40, and in that state, is fixed to the bottom of the gutter 1 to form the first-stage heating unit 4. Further, another group of heating units 30 is embedded in mortar and bound to form a mortar block 50. In this state, the heating unit 5 is fixed to approximately the central portion of the gutter 1 in the vertical direction, and the second-stage heating unit 5 is fixed. Is forming.

As shown in FIG. 2, the heat pipe 3 of the first-stage heating unit 4 penetrating the side wall 10 a of the concrete block 10 from inside the gutter 1 is horizontal so as to be substantially orthogonal to the longitudinal direction of the gutter 1. After extending in the width direction of the road 2 such that the pitch between adjacent heat radiating portions 31 is P2, and as shown in FIG. The concrete 21 extends along the road surface 20. Further, the heat radiating portion 31 of the heat pipe 3 which constitutes the second-stage heating portion 5 is also buried immediately below the road surface 20 in the same manner as the heat pipe 3 described above. The upper and lower sides of the heating section 5 of the second stage are the flow paths K1 and K2 of the heat source water W. Therefore, the heating section 4 of the first stage is heated from the upper side, and the heating section 5 of the second cross section is also provided. Is heated from both upper and lower sides.

The length L of the heating portion 30 of the heat pipe 3 in the second-stage heating portion 5 in the side groove 1, the inclination angle θ of the side groove 1 with respect to the longitudinal direction, and the pitch P 1 between the heating portions 30 are: The setting is similar to that of the first heating unit 4.

Further, the heat radiating portion 31 of the heat pipe 3 which constitutes the second-stage heating portion 5 penetrating the side wall 10 a of the concrete block 10 of the gutter 1 is radiated by the heat pipe of the first-stage heating portion 4. The heat dissipating portion 31 of the heat pipe 3 of the second stage heating portion 5 is arranged in parallel with the portion 31 so as to form the same arrangement surface as that of the portion 31, as shown in FIG. Since the heat pipes 3 of the first stage heating unit 4 are arranged alternately, the pitch P3 of the heat radiating unit 31 of the heat pipe 3 is half of this pitch P2.

Since the heating unit 30 of the heat pipe 3 is provided in two stages in the ditch 1 as described above, heat is sufficiently recovered from the heat source water W in the ditch 1 by the heating unit 30 of the heat pipe 3. be able to. That is, while maintaining the length L and the pitch P1 of the heating portion 30 of the heat pipe 3 at predetermined positions, at least twice as many heating portions 30 of the heating pipe 3 can be arranged in the gutter 1, and Since the heat radiating portion 30 of the heat pipe 30 can be arranged below the road surface 20 at a narrow pitch P3, the snow on the road 2 can be sufficiently melted.

In this invention, it is also possible to provide the heat pipe heating section in the side groove in three or more stages.

[0020]

[Effect of the device]

 As is clear from the above description, according to the present invention, the heat pipe heating portion that comes into contact with the heat source water in the side groove can be enlarged, so that the substantial heat receiving area of the heat pipe increases, and as a result, the heat source In addition to being able to effectively utilize the waste heat of water, it becomes possible to use the heat source water for snow melting even when the temperature of the heat source water is low.

[Brief description of drawings]

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

FIG. 2 is a plan view thereof.

FIG. 3 is a schematic sectional view showing an example of a conventional heat pipe type road snow melting device.

FIG. 4 is a schematic plan view showing a conventional heat pipe type road snow melting device.

[Explanation of symbols]

 1 Gutter 3 Heat Pipe 4 First Stage Heating Section 5 Second Stage Heating Section 20 Road Surface K1 Channel K2 Channel W Heat Source Water

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Shinichi Sugihara 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Electric Wire Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. In a heat pipe type snow melting device for heating the road surface by transporting heat having heat source water flowing in the side groove to a position directly below the road surface by a heat pipe, one end portion of a plurality of heat pipes is vertically moved in the side groove. Are arranged in a plurality of stages with a predetermined interval in the direction, and a flow path is formed between one end of these heat pipes, and the other end of each heat pipe is buried immediately below the road surface. A heat pipe type snow melting device.