JPH0325585B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a roof tile that is mounted on the bottom of a concave surface of a row of tiles extending in the vertical direction, and a slit-shaped outlet is provided in the side surface of the roof tile in the vertical direction. The present invention relates to a hot air blowing type snow melting device which is equipped with a blowing pipe formed of a hot air blowing pipe, and is configured to effectively melt snow by hot air blown out from the blowing outlet in the form of an air curtain.

[Conventional technology]

In snowy regions, removing snow from roofs is hard work, and especially in densely populated residential areas, the added hassle of transporting the removed snow to snow dumping sites is extremely costly. Furthermore, snow removal work is extremely dangerous, and it is not uncommon for workers to fall and fall. For this reason, various methods have been proposed to remove snow from roofs without relying on human hands. The main methods include installing water pipes at the ridge of the roof and melting snow by sprinkling water from water holes drilled in the pipes; There is a method of installing a heating element such as a hot water pipe or a sheet heating element (a sheet-shaped heating element that generates heat in a sheet) on the back side of the heating element.

However, such snow melting methods have the following problems, especially when used for tiled roofs. In other words, in the case of the method using water pipes, when water is sprinkled in snowy conditions, it is possible to melt the snow near the sprinkled area, and the water flowing through the concave surface of the roof tile can melt the snow that comes into contact with the concave surface. Although it is possible to melt snow that is in a state of
As shown by the symbol a in the figure, the snow remained unmelted in the form of bridges, indicating that snow melting was incomplete.

On the other hand, in the case of a method in which a heating element such as a hot water pipe or a sheet heating element is installed behind the roof tiles, in order to melt the snow on the roof tiles, the temperature of the entire tile must be raised to a temperature higher than that required for snow melting. Considering the need for heating and the large heat capacity of roof tiles, there was a problem of very poor thermal efficiency and high heating and electricity bills. In this case, even if the snow sensor detects snowfall, it takes a considerable amount of time for the temperature on the tile surface to reach a temperature that allows snow melting, so there is a problem that the snow melting effect is not fast enough. It was hot.

The present invention was developed to solve the above-mentioned problems in snow melting on tiled roofs.

[Means to solve the problem]

A hot air blowing type snow melting device (hereinafter referred to as the device) 1 according to the present invention is installed on a side surface 5 of a main pipe installed along a ridge 2, and on a bottom portion of a concave surface 7 of a row of tiles 6 extending in the vertical direction. An upper end 10 of a blow-off pipe 9 placed along the row of tiles 6 is connected to the blow-off pipe 9, and a slit-shaped slit is provided on the side surface of the blow-off pipe 9 to blow out heated air in an air curtain shape. The air outlet 17 is provided vertically, and the main pipe 3 is connected to a hot air source.

In the present invention, "blowing out heated air from a slit-shaped outlet in the form of an air curtain" means blowing out heated air substantially uniformly over the entire length of the slit-shaped outlet. It is used in the sense of causing.

[Effect]

However, when the hot air generation source is operated, heated air is blown out in the form of an air curtain from the outlet 17 provided in the blowout pipe 9, and the air blown out in the form of an air curtain causes the curvature of the tiles. The air blows up along the surface, and the heat retained in the air is directly applied almost uniformly to the snow on the tile surface. At the same time, the tile surface is heated almost uniformly,
As a result, the snow on the roof is effectively melted.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 to 4, the device 1 of the present invention has a ridge 2
In each of the rows of tiles 6 extending vertically, an upper end 10 of a blowout pipe 9 as a branch pipe is installed in the bottom part of the concave surface 7 of the main pipe 3 installed along the side surface 5 of the main pipe 3. In addition, the main pipe 3 is connected to a hot air generation source. In order to prevent heat loss as much as possible, the main pipe 3, the blow-off pipe 9, etc. are made of a suitable heat-insulating material, and are covered with a heat-insulating material if necessary.

The main pipe 3 is formed, for example, as a cylindrical pipe, one end of which is sealed, and the other end connected to the hot air source via a conduit 11 (see FIG. 1). Also, on the side surface 5, each tile row 6...
A joint portion 12 is provided in a protruding manner in correspondence with the joint portion 12 . The main pipe 3 is removably installed along the ridge 2 on one side or both sides of the ridge 2.

For example, as shown in FIGS. 2 to 4, the blowoff pipe 9 is formed as a pipe body with an elliptical cross section that can be inserted through the through hole 15 of the snow stopper part 13 of the roof tile. As a result, each blow-off pipe 9 is stably fixed in the snow stopper part 13), its lower end is sealed 16, and its upper end 10 is connected to the joint part 12 of the main pipe 3. There is. In this embodiment, the connection is detachable. Slit-shaped outlets 17 for blowing out heated air in the form of an air curtain (see arrows in FIG. 4) are provided in the vertical direction on both side surfaces of the outlet pipe 9.
The air outlet 17 has a groove width of, for example, about 2 mm, and is provided continuously over the entire length of the air outlet pipe 9. As shown in FIG. Blowout pipe 9 via 19
Sometimes they are arranged in parallel in the length direction.

The hot air generation source is an electric heater, a hot water boiler,
Alternatively, exhaust heat from a house or the like, or air heated by a heat source such as geothermal heat, is sent to each outlet pipe 9 through the main pipe 3 by a blower.

In this embodiment, when a snow sensor (not shown) detects snowfall, the warm air generating source is immediately activated in response to the detection signal.

However, in the device 1 according to the present embodiment, the hot air generation source is activated by the detection of the snow sensor, so that heated air is emitted from the slit-shaped air outlet 17 provided on both side surfaces of the air outlet pipe 9. The air blows out in an air curtain shape (see the arrows in Figure 4), and the heat retained in the air is directly applied almost uniformly to the snow on the tile surface, and at the same time, it warms the tile surface almost uniformly. As a result, the snow on the roof surface is melted almost uniformly and quickly.

Furthermore, the device 1 of the present invention works effectively even when a certain amount of snow has accumulated on the roof surface. That is, the device of the present invention uses a hot air blowing method, and since the blowing pipe 7 for blowing out hot air is mounted on the lower end of the concave surface of the vertically extending row of tiles, the blown air blows against the curved surface of the tiles. When the air blows up along the line, the air outlet 1
Not only will the hot air be influenced in each direction around 7, but the heat retained by the hot air will be stored on the surface of the tiles over a wide range. Therefore, unlike the above-mentioned water sprinkling method, the snow on the roof surface can be effectively melted without leaving any snow in the form of bridges as shown in FIG.

In addition, in the case of the device according to the above embodiment, the main pipe 3
is removable, and the main pipe 3 and the blowout pipe 9 are separable, so when it is not needed,
The device can be easily removed from the roof by disassembling it. Therefore, not only does it not cause problems such as spoiling the aesthetic appearance of the roof, which is the case with conventional sprinkler-type snow melting devices that remain installed all year round, but the device can also be used for a long time.

Others In the apparatus described in the above embodiments, the hot air generation source may be housed in the main pipe for the purpose of making the entire apparatus more compact. Also, the slit-like outlet may be provided only on one side of the outlet pipe if the desired snow melting can be achieved.

Further, the temperature of the warm air is arbitrarily set within a range that can melt snow, taking into account the arrangement of the blow-off pipes, the amount of snow to be melted, etc., and is not necessarily fixed at a constant temperature.

Furthermore, when the device of the present invention is installed on a roof, it is not necessarily installed over the entire surface of the roof, but may be installed partially in areas where it is difficult to remove snow, for example.

In addition, especially when the device of the present invention is used for the purpose of melting snow on a roof, by setting the length of the main pipe and the length of the blow-off pipe to a unit length, the main pipe can be easily used regardless of the size of the building. It is convenient because a device of a desired size can be easily constructed by interconnecting a plurality of or a plurality of blowout pipes.

The device of the present invention can be configured to be compact and easy to carry by attaching a small hot air generator (hot air source) to one end of the blow-off tube.

〔Effect of the invention〕

In the device of the present invention, a blowout pipe having a slit-shaped blowout port provided on the side surface is mounted on the bottom of the concave surface of the row of tiles extending in the vertical direction, and hot air is emitted from the blowout port in the form of an air curtain. It is configured to blow out air.

Therefore, the air blown out like an air curtain blows up along the curved surface of the tile, and the retained heat of the blown warm air is efficiently imparted to the snow on the tile surface and is accumulated over a wide area of the tile surface. As the snow is heated, the snow on the roof is effectively melted. Moreover, unlike the conventional case where a heating element is installed on the back side of a roof tile, the heat of the hot air is directly applied to the snow, and the hot air directly warms the surface of the tiles. Snow melting can be started immediately by blowing, and snow melting is fast-acting. Moreover, heating the entire tile, which has a large heat capacity, eliminates waste, resulting in extremely high thermal efficiency and excellent energy-saving effects. In addition, since the influence of warm air is spread over a wide area, snow can be reliably melted even in snowy conditions, and therefore, unlike snow melting using water sprinkling methods, there is no inconvenience such as unmelted snow remaining in the form of bridges (see Figure 6).

Further, in the device according to the present invention, the blowing pipe for blowing out hot air is arranged so as to fit along the concave surface of the tile row extending in the vertical direction so as to fit along the tile row. Therefore, even if the moisture content of the snow becomes high and the snow becomes slippery due to snow melting by warm air, no excessive force is applied to the blow-off pipe and there is no risk of damage to the blow-off pipe.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the device according to the present invention, Fig. 2 is a perspective view showing the connection state between the main pipe and the blow-off pipe, Fig. 3 is an explanatory view showing the fixed state of the blow-off pipe; FIG. 4 is a diagram illustrating the operation of the present invention, FIG. 5 is a perspective view showing another example of the blow-off pipe, and FIG. 6 is a sectional view illustrating the state of snow melting on the roof surface of a snow melting device using a water sprinkling method. 1...Equipment, 2...Building section, 3...Supervisor, 5...
Side part of main pipe, 6... Tile row, 7... Concave part, 9...
...Blowout pipe, 17...Blowout port.

Claims (1)

[Claims] 1 Side part 5 of main pipe 3 installed along ridge part 2
An upper end 10 of a blow-off pipe 9 mounted along the tile row 6 is connected to the bottom part of the concave surface 7 of the tile row 6 extending in the vertical direction, and a side surface of the blow-off pipe 9 is provided with an upper end 10. , a slit-shaped outlet 17 for blowing out heated air in the form of an air curtain is provided in the vertical direction, and the main pipe 3 is connected to a hot air generation source. A snow melting device that blows hot air.