JPH0312933Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a device for melting snow accumulated on a roof, and particularly relates to a snow melting device using a heat pipe.

Conventional Technology A large amount of snow can cause houses to collapse, so in areas with heavy snowfall, snow is removed when the amount of snow exceeds a certain level. However, the work of removing snow is not only dangerous, but also requires a great deal of labor, which poses a heavy physical and economic burden.

Therefore, various devices have been proposed to eliminate snow on roofs without relying on input, such as electric snow melting devices that use a planar electric heating element, and hot water circulation snow melting devices that install hot water pipes on the roof surface. , or a method of melting snow by guiding indoor heat to the attic is conventionally known. Recently, a device has also been considered in which a heat pipe is disposed on the roof surface and heat is applied to one end of the heat pipe to melt snow through the heat pipe.

Problems that the invention aims to solve: However, although electric snow melting equipment is easy to supply and control energy, it also has problems such as the risk of electrical leakage and high running costs due to the high unit cost of energy. There's a problem. In addition, hot water circulation type snow melting equipment requires the construction of a new roof to cover the hot water pipes, which increases equipment costs.Also, since the temperature of hot water decreases while it is flowing, it is necessary to construct a new roof to cover the hot water pipes. There is a problem in that the snow melting ability is low and snow cannot be melted uniformly. Furthermore, methods that use indoor heat not only do not melt snow sufficiently, but also require a special structure for the house, which increases equipment costs, and the indoor heat does not reach the eaves. Therefore, there is a problem that snow cannot be melted from the eaves.

In contrast, the above-described apparatus using a heat pipe has advantages such as a relatively simple structure and the ability to uniformly melt snow in the longitudinal direction of the heat pipe. However, the depth of snow on a sloped roof is deeper at the eaves side because the snow is blown away by the wind, so if the heat pipe is arranged along the slope of the roof, If snow melting is insufficient, the depth of the snow on the eaves side will always be deep, and as a result, the load on the eaves will increase and there is a risk of personal injury due to falling snow.

This idea was made against the background of the above circumstances, and the purpose is to provide a device that can effectively melt snow with a simple structure, and can also melt snow according to the unevenness of snowfall. That is.

Means for Solving the Problems In order to achieve the above object, this invention has a snow melting panel that has a heat pipe fixed to a board and a high temperature fluid pipe connected to one end of the heat pipe. A plurality of heat pipes are arranged along the inclination direction on the surface, and among these snow melting panels, the length of the heat pipe in the snow melting panel near the eaves is
The length of the heat pipe in the snow melting panel that is far from the eaves is determined to be shorter than the length of the heat pipe in the snow melting panel that is far from the eaves, so that the amount of heat transported per unit length of the heat pipe in the snow melting panel that is close to the eaves is larger than that of the heat pipe in the snow melting panel that is far from the eaves. It is characterized by the fact that

Function In this idea, high-temperature fluid such as hot water or high-temperature exhaust gas flows through the high-temperature fluid pipes of each snow melting panel. As a result, the end of each heat pipe that is in contact with the high-temperature fluid pipe becomes a heating part, and the other part becomes a heat dissipation part, and the snow in contact with the heat dissipation part is carried away from the high-temperature fluid by the heat pipe. Dissolved by heat. In that case, among the snow melting panels installed on the roof surface, the length of the heat pipe in the snow melting panel placed on the eaves side is set shorter than the length of the heat pipe in the snow melting panel on the side far from the eaves, and the snow melting panel on the eaves side is Since the heat transport amount per unit length of the heat pipe of the panel is configured to be larger than the heat transport amount per unit length of the heat pipe of the snow melting panel on the side far from the eaves, it is possible to actively snow melting will be carried out. Therefore, even in the case of a sloped roof, it is possible to prevent the amount of snow from increasing on the eaves side.

Embodiment Next, an embodiment of this invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing an example of the device of this invention, and the snow melting panel 1 used here is constructed as shown in FIGS. 2 and 3. That is, as shown in these figures, the snow melting panel 1 has a structure in which a heat insulating material 2 and two heat pipes 3 are sandwiched and fixed between metal plates of an upper plate 4 and a lower plate 5, and the insulating material Reference numeral 2 is a rectangular flat plate made of glass wool, styrene foam, etc., and two heat pipes 3 are arranged on the top surface thereof at a constant interval along the longitudinal direction. The upper plate 4 and the lower plate 5 are made of a metal plate such as a galvanized steel plate or a galvanized steel plate, and the upper plate 4 has a substantially semicircular shape that wraps and fixes the heat pipe 3. A protrusion 6 in cross section is formed. In addition, a pair of protrusions 7 serving as supporting legs are formed on the lower plate 5 at substantially the same intervals as the intervals between the heat pipes 3 and along the longitudinal direction of the lower plate 5. These upper plate 4 and lower plate 5 are integrated by sandwiching them in close contact with the heat insulating material 2 and heat pipe 3, and joining the left and right edges of each by folding. has been made into The edge-folded portion serves as a flange 8.

Further, end plates (not shown) having a U-shaped cross section are attached to both ends of the upper plate 4 and the lower plate 5 in the longitudinal direction. sealed between.

As is well known, the heat pipe 3 substantially encloses only a condensable fluid and is provided with a capillary pressure internally as necessary, so that the condensable fluid transports heat as its latent heat. One end of this heat pipe 3 is connected to the upper plate 4.
and protrudes from one end side in the longitudinal direction of the lower plate 5, and its protruding end is curved downward according to the thickness of the heat insulating material 2 and the height of the protrusion 7. A hot fluid tube 9 is attached that is oriented in a direction parallel to the edge of the metal plate. Therefore, the hot fluid pipe 9 is located approximately on the same plane as the lower surface of the metal plate. This high-temperature fluid pipe 9 is for giving the heat of the high-temperature fluid flowing inside it to the heat pipe 3, and the connection structure between this high-temperature fluid pipe 9 and the heat pipe 3 is the same as that of the heat pipe 3. A configuration in which a jacket is attached to the outer periphery of the high-temperature fluid pipe 9 and the heat pipe 3 is communicated with the jacket, or a configuration in which the end of the heat pipe 3 is simply inserted into the inside of the high-temperature fluid pipe 9 can be adopted. .

FIG. 1 is a schematic diagram showing a snow melting device of this invention in which two of the snow melting panels 1 described above are arranged side by side in the direction of the slope of the roof, and each snow melting panel 1 has its high temperature fluid pipe 9 located on the lower side. The heat pipes 3 are arranged along the slope direction of the roof, and the length of the snow melting panel 1 on the side closer to the eaves 10 among these snow melting panels 1, that is, the axial length of the heat pipe 3 of the snow melting panel 1 on the eaves side is set shorter than that on the top side of the roof 11. In that case, the lower plate 5
Because the protrusions 7 formed in support the snow melting panel 1,
A gap is formed between the roof 11 and the snow melting panel 1.

If a high-temperature fluid such as hot water, steam, or high-temperature exhaust gas is allowed to flow inside each high-temperature fluid pipe 9 during snowfall with the installation as described above, the portion of the heat pipe 3 that is in contact with the high-temperature fluid pipe 9 becomes a heating section. At the same time, the part sandwiched between the metal plates is cooled by the snow and becomes a heat radiating part. That is, the condensable fluid in the heat pipe 3 receives heat from the high-temperature fluid in the heating section and evaporates, the vapor gives heat to the snow in the heat radiation section and condenses, and the liquefied condensable fluid returns to the heating section again. do. Therefore, the heat possessed by the high-temperature fluid is carried by the heat pipe 3 and applied to the snow, and as a result, the snow is melted. In this case, on the side of the eaves 10, the length of the heat pipe 3 is set short and the amount of heat transported per unit length is increased, so snow melting is actively performed. Furthermore, since the temperature of the heat pipe 3 is uniform throughout due to its characteristics, uniform snow melting is performed in the axial direction of the heat pipe 3 in each snow melting panel 1, and the heat insulating material 2 is provided below the heat pipe 3. This allows heat to be effectively used for snow melting. Further, the snowmelt water flows toward the eaves through the upper surface of the upper plate 4 and the gap between the snowmelt panel 1 and the roof 11, but since the gap is formed sufficiently wide by the ridges 7, the snowmelt water and the roof 11 flow toward the eaves. This prevents dirt from accumulating in the gaps, and even prevents the roof 11.
Damage such as corrosion can be reduced.

In addition, although the above embodiment has been explained by taking as an example a structure in which two snow melting panels 1 are arranged in the slope direction of the roof, this invention is not limited to the above embodiment, and the arrangement of the snow melting panels 1 is not limited to the above embodiment. The number of sheets may be set appropriately.

Effects of the invention As is clear from the above explanation, the snow melting device of this invention can actively melt snow on the eaves side, which prevents the snow from becoming particularly deep on the eaves side of a sloping roof. As a result, it is possible to eliminate accidents caused by unbalanced loads due to snow accumulation and snow falling from the eaves.

In addition, according to this idea, a snow melting panel that integrates heat pipes, plate materials, and high-temperature fluid pipes can be installed on the roof, and high-temperature fluids such as hot water can be flowed through the high-temperature fluid pipes, so the structure is simple and effective. snow melting can be carried out.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of the snow melting device of this invention, Fig. 2 is a partially omitted perspective view showing an example of the snow melting panel used in the device, and Fig. 3 is a cross section taken along the line - in Fig. 2. It is an enlarged view. 1...Snow melting panel, 2...Insulating material, 3...Heat pipe, 4...Upper plate, 5...Lower plate, 7...Protrusion, 9...High temperature fluid pipe, 10...Eaves, 11... …
roof.

Claims (1)

[Scope of utility model registration request] A plurality of snow melting panels each having a heat pipe fixed to a plate material and a high temperature fluid pipe connected to one end of the heat pipe are arranged on the roof surface along the inclination direction, and among these snow melting panels, The length of the heat pipe in the snow melting panel near the eaves is determined to be shorter than the length of the heat pipe in the snow melting panel far from the eaves, so that the amount of heat transported per unit length of the heat pipe in the snow melting panel near the eaves is reduced from the eaves. A snow melting device for a roof, characterized in that the amount of heat transported per unit length of a heat pipe in a distant snow melting panel is larger than that of a heat pipe.