JPH0628613Y2 - Roof snow melting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a roof snow melting apparatus that uses the heat of the atmosphere to melt snow accumulated on a roof.

(Prior Art) In buildings such as houses and factories in heavy snowfall areas, there is a risk that the building will be damaged or crushed due to the weight of snow on the roof, so it is necessary to remove it.

Generally, snowfall work is performed manually, but in recent years, the number of workers has decreased due to aging and depopulation in rural areas. For this reason, many houses ask workers for snowfall, and the cost is huge.

In addition, manual snowfall is dangerous because it is a work at a high place, and especially in a town with densely packed houses, it is necessary to remove snow on the borders with neighboring houses and roads. Was a problem.

Instead of such manual snowfall, in recent years some wiring and piping have been installed on the roof, and some devices that automatically transmit snow by transmitting electric heat or combustion heat to it have been used. It was

Conventionally, the main method that has been put to practical use is to install a sheet heating element on the roof, and an electric heating method that melts snow by the resistance heat generated by energizing it.Piping on the roof and heating it with a boiler here. Hot water method that circulates hot water (antifreeze) to melt snow, and various methods such as hot air method that pipes on the roof, blows the combustion heat of the boiler with a blower, and blows warm air from the outlet opening in the pipe to melt snow There is.

However, since the electric heating method has a high equipment cost and uses a large amount of electric power, it has a problem of high running cost and is not widely used. In addition, the hot water system requires high equipment costs such as pipes, pumps, and boilers for circulating hot water.
It is difficult to repair due to piping troubles, and running cost is high because it burns oil and gas.

Furthermore, the hot air method has low equipment costs and is easy to maintain, but since it is boiler combustion, running costs are high.
There is a problem of roof corrosion and fire protection due to exhaust gas.

In addition, in any of the above-mentioned methods, since the snow is rapidly melted by the electric heat or the combustion heat, the snow melting effect is lowered by locally heating and causing the hollowing, and the melted water is frozen while flowing down and becomes an icicle. There is a risk due to this fall.

(Problems to be solved by the invention) The present invention eliminates the above-mentioned drawbacks, the equipment cost is low only with the air pipe and the blower, and the thermal energy of the atmosphere is used to melt the snow accumulated on the roof. It is an object of the present invention to obtain a roof snow melting device which is low in cost, prevents cavitation and efficiently melts snow, and is easy to maintain in the event of a failure.

(Means for Solving the Problems) In the present invention, a plurality of branch pipes horizontally installed along the ridge are provided at a predetermined interval from the ridge toward the eaves side on the upper surface of the roof, and the roof surface is divided into a plurality of blocks. A blower that arranges air pipes divided into two parts, and forms a plurality of air outlets that open upward at predetermined intervals along the longitudinal direction at the top of this air pipe and that takes in the atmosphere from the suction port. The exhaust port of is connected to the air pipe.

(Function) The roof snow melting device of the present invention drives a blower when snow is piled up, sucks air from the air suction port, and divides the roof surface into a plurality of blocks so that a plurality of roofs are provided. The branch pipe is supplied to an air pipe provided at a predetermined interval, and the atmosphere is ejected to the upper part of the air pipe from a large number of air outlets that open upward.

As a result, when the atmospheric temperature is 0 ° C. or higher, the thermal energy of the atmosphere ejected from the air outlet gradually melts the snow on the roof toward the ejected upper side. In this way, a hole is formed upward in the snow on the roof along the air outlet, and this hole grows up to the surface to form a groove and is divided into blocks as a whole.

In this case, the multiple branch pipes are installed horizontally along the ridge, so this acts as a snow stop, and the snow on the roof does not slide down toward the eaves and moves on the branch pipes. Therefore, the continuous air holes can be easily formed in the snow by the atmosphere ejected from the air outlets.

Thus, at first, a plurality of trumpet-shaped holes are formed in a line along the air outlet on the surface of the snow, but the holes gradually become larger and the snow is separated into blocks.

As a result, the surface area of snow increases, and the snow gradually melts in contact with both the atmosphere ejected from the air outlet and the naturally flowing atmosphere. In addition, since the surface area is large when the sun irradiates, snow melting is also promoted by solar heat, and natural heat energy can efficiently melt snow.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6.

An air pipe 2 is attached to the upper surface of the roof 1. This air pipe 2 has a thick header pipe 2a in the vertical direction (vertical direction).
Are provided, and a plurality of branch pipes 2b ... Are provided in parallel with the ridge 4 at predetermined intervals from the ridge 4 toward the eaves side to divide the upper surface of the roof 1 into a plurality of blocks. It is like this. As shown in FIG. 3, a plurality of air outlets 3 are opened in the upper portion of the air pipe 2 at appropriate intervals.

The air outlets 3 ... Open upward in the upper part of the branch pipe 2b, and assuming that the amount of snow is 50 cm, the opening angle is preferably about 30 degrees, and the arrangement pitch of the air outlets 3 ... About 300 mm is preferable.

A blower 5 is attached to the ridge 4 above the roof 1.

As shown in FIG. 2, the blower 5 has a suction port 6 connected to an air intake 8 to which a louver 7 is attached, and an exhaust port 9 connected to a header pipe 2 a of the air pipe 2. This blower 5
Is connected to a power source 11 via a control panel 10, and the control panel 10 is further connected to a snow sensor 12 for detecting snowfall.

The roof snow-melting device with the above configuration is equipped with a snow sensor when snow falls.
The air blower 5 is driven by detecting at 12, and the air is sucked from the suction port 6 through the air intake port 8 and is supplied to the header pipe 2a of the air pipe 2 and further branched to the branch pipe 2a, and the air blowout port 3 Gushes from. The air outlet 3 is opened upward in the upper portion of the branch pipe 2b, and the atmosphere is ejected upward.

The branch pipe 2b is installed horizontally along the ridge 4 and serves as a snow stop, and the snow 13 accumulated on the roof 1 does not slide down toward the eaves side and does not move on the branch pipe 2b. Therefore, a continuous hole is easily formed by being melted by the thermal energy of the atmosphere ejected from the air outlet 3, the hole is gradually enlarged, and the snow 13 is separated into blocks.

For this reason, the surface area of the snow 13 increases, and the snow 13 gradually comes into contact with the ejected atmosphere and the naturally flowing atmosphere and gradually melts. Further, when the sunlight 14 irradiates the surface area, the snow melting is also promoted by solar heat.

This effect is more effective with the thermal energy of the atmosphere as the contact area between the snow and the atmosphere is larger, just as the snow that is finely sprayed in the air by the rotary snow removal device sinks with little lateral accumulation. It is the same as the action of melting snow.

In addition, Table 1 shows the number of days by snowfall depth in heavy snowfall areas such as Takada, Toyama, Kanazawa, and Fukushima. In this heavy snowfall area, as shown in Table 2, the average from December to March. The temperature is relatively high above 1.0 ° C.

Also, looking at the temperature during snowfall, it is clear from the graph of FIG. 5 that it often snows above 0 ° C rather than below 0 ° C.

Therefore, the temperature in the heavy snowfall region is relatively high, and when the temperature rises above 0 ° C, the snowmelt is promoted and divided into blocks, and the surface area is further increased to naturally melt the snow due to the atmospheric temperature.

As for the change in the snow depth in the heavy snowfall area, as shown by the broken line in Fig. 6, the snow melts and then melts, and then it is piled on top of it again. The surface area of the snow 13 is expanded, and the thermal energy of the atmosphere is positively used to promote snow melting.

That is, when the device of the present invention is used, the snow depth becomes as shown by the solid line in FIG. 6, and it is about 50 cm at the maximum according to the experiment. At this level, there is no need for snowfall, and there is no need to completely melt snow in a short time using electric heat or combustion heat as in conventional devices.

Further, the device of the present invention blows the atmosphere onto the snow 13 and gradually melts the snow, so that it is possible to prevent the cavitation phenomenon.Also, since there is always the circulation of the atmosphere, the evaporation of the melted water is promoted and the occurrence of icicles can be reduced. it can.

In the above embodiment, the circular air outlet 3 is opened in the air pipe 2, but as shown in FIG. 7, the air outlet 2 is formed by the nozzle 15 which can change the blowing direction, and the eighth embodiment.
The slit 16 may be provided as shown in the figure, or the wind direction guides 17 may be provided on both sides of the slit 16 as shown in FIG.

Further, the piping structure of the air piping 2 is not limited to the comb tooth shape, but may be a grid shape, and the blower 5 may be driven manually without providing the snow sensor 12.

Further, a hot water pipe through which hot water passes may be provided inside the air pipe 2 to form a double pipe structure so that the atmosphere is supplementarily overheated and blown out.

(Effect of the Invention) As described above, according to the present invention, the equipment cost is low only with the air pipe and the blower, and the running cost is low because the thermal energy of the atmosphere is used. In addition, it is possible to obtain a roof snow melting device that is easy to maintain in the event of a failure.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which a roof snow melting device is attached, and FIG.
The figure is an explanatory view showing the configuration of the apparatus, FIG. 3 is a perspective view of the air piping, FIG. 4 is a side view of the roof showing a snow melting state, and FIG. 5 is a graph showing the relationship between the snowfall time and the air temperature. FIG. 7 is a graph showing changes in snow depth, and FIGS. 7 to 9 are perspective views of air pipes according to different embodiments. 1 ... Roof, 2 ... Air pipe 2a ... Header pipe, 2b ... Branch pipe 3 ... Air blowout port, 5 ... Blower 8 ... Air intake port, 13 ... Snow

Claims (1)

[Scope of utility model registration request] 1. An air pipe in which a plurality of branch pipes installed horizontally along the ridge are provided at a predetermined interval from the ridge toward the eaves side on the upper surface of the roof, and the roof surface is divided into a plurality of blocks. In the upper part of the air pipe, a plurality of air outlets that open upward are formed at a predetermined interval along the longitudinal direction, and an exhaust port of a blower that takes in air from the suction port is provided in the air pipe. A roof snow melting device characterized by being connected.