JPH0352929Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a snow melting device for melting snow accumulated on the roof of a building.

[Conventional technology]

In areas with heavy snowfall, snow damage occurs, such as houses being crushed by the weight of the snow, or even if they are not crushed, the house is distorted and the door shoji cannot be moved.To prevent this, it is necessary to remove snow that has accumulated on the roof. Snow removal will be carried out to remove it. In the past, snow removal work had to be done manually, but in addition to being extremely hard work, the reality is that it cannot be done satisfactorily due to a lack of manpower. On the contrary,
In order to automatically perform snow removal work, snow melting devices using hot air, hot water, etc., electric heat pipes, electric heat sheets, mechanical snow removal devices, etc. have been proposed.

[Problem that the invention attempts to solve]

However, in the case of devices that use hot air, etc., as described above, they are installed to melt snow by blowing hot air, flowing hot water, or using the heat generated by electric heating wires, making it extremely difficult to melt snow. The first problem is that it requires a lot of heat energy and has high running costs.

Another problem with mechanical devices is that, in addition to the complexity of the device itself and high equipment costs, the problem is that after snow removal, snow on the roof accumulates around the house and blocks passageways. There are two problems.

In an attempt to solve such problems, the applicant has
We have already proposed a snow melting device that installs water pipes on the upper edge of the roof to release water, returns the melted snow water from the gutter to a water storage tank, and circulates the water through the water pipes (Utility Model Application No. 62-91819). ).

Although this water spray snow melting device solves the two problems mentioned above, subsequent tests have shown that the snow melted by water spray becomes like a shear bed and accumulates in the gutter, overflows from the gutter, and the outside air becomes cold. The melted snow water that flowed to the gutter froze again inside the gutter, causing a problem where the flow of water was blocked.

The present invention was obtained as a result of studies aimed at improving such water spray snow melting devices. Therefore, an object of the present invention is to provide a snow melting device that does not cause snow melting water on the roof to freeze in the gutter and dam up the water.

[Means for solving problems]

In order to achieve the above object, the snow melting device of the present invention takes the following measures.

(1) Horizontally install water discharge pipes with water discharge holes drilled at regular intervals along the upper edge of the roof.

(2) Install rain gutters along the lower edge of the roof with the outer wall rising higher than the inner wall.

(3) Inside the rain gutter, a large number of water holes are drilled in the longitudinal direction of the upper surface, and a snow melting pipe with a metal wire spirally wound around the outer circumference that generates heat when energized is installed horizontally.

(4) A water storage tank with a built-in submersible pump connected to the water discharge pipe will be installed below the rain gutter.

[Effect]

By discharging water from the water pipe, the water melts or suspends snow accumulated on the roof, and uses the slope of the roof to carry it to the rain gutter. Melted snow that reaches the rain gutter is cooled by the outside air, but the heat from the metal wire of the snow melting pipe prevents it from refreezing inside the gutter.

A water hole in the snow melting pipe allows the melted water to pass through a metal wire, trickle through the pipe, and send the water to the water storage tank.

The high rise forming the outer wall of the gutter prevents overflow when large amounts of snow slide down at once due to water discharge.

A water storage tank collects water from the gutter, and a built-in submersible pump circulates the water to the discharge pipe.

〔Example〕

Reference numeral 1 indicates a house, 2 indicates a roof, and 3 indicates a snowfall sensor, which has the function of sensing the snowfall state with a sensor and turning on switches for water pumps, heaters, etc. The snowfall sensor 3 is convenient because it automatically operates even in unoccupied buildings, but in the case of ordinary houses, it is not necessary in the present invention because a person only needs to turn on the switch when it starts to snow.

A water discharge pipe 54 is horizontally installed along the upper edge of the roof 2, and a large number of water discharge holes 5 are bored at regular intervals on both sides of the pipe.

A rain gutter 6 is installed horizontally at the lower edge of the roof 2.
This rain gutter is horizontally box-shaped with an open top,
The outer wall has a much higher rise 7 than the inner wall.

A snow melting pipe 8 made of polyvinyl chloride is installed horizontally in the rain gutter 6. The snow melting pipe 8 is a pipe long enough to be stored in the rain gutter 6, and has a large number of water holes 9 arranged in the longitudinal direction on its top surface, and both ends are sealed with polyvinyl chloride caps 10. At the same time, there is a water pipe 11 on the lower surface near the end.
A notch 12 is provided for the flow of water. or,
A stainless steel coil 13 is wound around the outer periphery of the snow melting pipe 8 as a metal wire that generates heat when energized. 14 is a water storage tank in which a submersible pump (not shown) is built. Water storage tank 14
A water pipe 11 into which water flows from the rain gutter 6 and a water pipe 15 which sends water to the water discharge pipe 4 are connected.

In this embodiment, the metal coil 16 is also wound around the water discharge pipe 4, but this is also not essential.

17 is a current controller, which controls the current to the snowfall sensor 3, stainless steel coil 13, submersible pump, and metal coil 16.

Next, the operating situation of this embodiment will be explained.

When snow falls, a snowfall sensor 3 detects this, a switch is turned on, a submersible pump in a water storage tank 14 is activated, and water is discharged from a water discharge hole 5 of a water discharge pipe 4 to melt the snow on the roof. The melted snow reaches the rain gutter 6 in the form of a shear bed or floating on water and accumulates one after another, but the shear bed on the snow melting pipe 8 is melted by the heat of the stainless steel coil 13 and passes through the water hole 9. Flows through the snow melting pipe 8,
The water passes through the water pipe 11 and flows into the water storage tank 14.
Even if the snow falls heavily and the snow slides off the roof all at once, the rising part 7 of the rain gutter blocks this and prevents the snow from falling from the roof.

The material of the metal wire wound around the snow melting pipe and, if necessary, the water discharge pipe is not particularly limited, but stainless steel coil (18-8) is preferred from the viewpoints of electrical resistance, weather resistance, and economy.

The thickness, width, and length of the coil are calculated based on the length, outer diameter, and winding interval of the pipe. For example, the volume resistivity of stainless steel (18-8) is 72μΩ・cm, and a PVC pipe with an outer diameter of 100mm and a length of 10m is
Approximately 41m is required to wind at intervals, so if
To obtain a heat output of 150W at 24V, it will require 6.25A, and the resistance will be 3.84Ω. Therefore, in the case of stainless steel with a plate thickness of 0.3 mm, the plate width needs to be 25 mm. It is preferable to prepare a list of these and select them appropriately in consideration of temperature and workability.

[Effect of idea]

By having the above configuration, the present invention has the following effects.

(1) Even if it snows heavily and the snow slides off the roof all at once, the rising part of the rain gutter will stop the snow from falling under the eaves.

(2) Even if shearbed-like snow accumulates in the rain gutter and the outside air gets cold, the snow melting pipe will not block the flow inside the gutter.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the snow melting device of the present invention, Figure 2
The figure is a perspective view of a rain gutter, FIG. 3 is a sectional view thereof, and FIG. 4 is a sectional view of a conventional rain gutter. 1... House, 2... Roof, 3... Snowfall sensor,
4...Water pipe, 5...Water hole, 6...Gutter, 7...
...Rising part, 8...Snow melting pipe, 9...Water hole,
10...Cap, 11...Water pipe, 12...Notch, 13...Stainless steel coil (metal wire), 1
4... Water storage tank, 15... Water pipe, 16... Metal coil, 17... Controller.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Water discharge pipes with water discharge holes drilled at regular intervals along the upper edge of the roof are installed horizontally, and the outer wall is connected to the inner wall along the lower edge of the roof. A rain gutter that rises higher is installed, and a large number of water holes are drilled in the upper longitudinal direction of the rain gutter, and a snow melting pipe with a metal wire spirally wound around the outer circumference that generates heat when energized is installed horizontally. A snow melting device characterized in that a water storage tank with a built-in submersible pump connected to the water discharge pipe is installed below the rain gutter. (2) The snow melting device according to claim 1, wherein the metal wire is a stainless steel coil.