JPH0344610B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for removing snow that has fallen on a roof.

(Prior Art) As is well known, in areas with heavy snowfall, snow accumulating on roofs can sometimes crush houses, which is extremely troublesome.

Therefore, in these areas, snow removal has traditionally been carried out manually.

However, this work of removing snow is very hard work, so in recent years, it has been proposed to install a snow removal device with a snow-melting function on the roof in advance, and use this snow removal device to melt snow without human intervention. Various proposals have been made.

As disclosed in Japanese Unexamined Patent Publication No. 57-133965, the above snow removal device is installed with a sloped roof, sprinkles water on the roof, and uses this water to directly melt the snow on the roof. There is a type of snow removal device (hereinafter referred to as a sprinkler type snow removal device).

Another device, as disclosed in Japanese Unexamined Patent Publication No. 57-96178, is to form a pool over the entire upper part of the roof, and use water in the pool to melt snow on the roof. (below,
It is called a pool-type snow removal device. ).

(Problems to be Solved by the Invention) However, the above snow removal device had the following drawbacks.

In the case of sprinkler-type snow removal equipment, the sprinkled water melts only the snow where it falls, and since this water flows down a certain part under the snow, it does not accumulate on other parts. The drawback was that the snow remained unmelted.

Another disadvantage is that the water is extremely uneconomical because it is discharged from the roof while still having sufficient thermal energy to melt the snow.

Furthermore, water flowing on the roof can cause snow to form snowflakes and slide down, damaging the gutter installed at the edge of the roof or falling to the ground, which can be dangerous. It was hot.

In addition, pool-type snow removal equipment covers the entire upper part of the roof with water, so a large amount of water is required, and the structure of the house must be able to withstand this large amount of water, which increases costs. There was a drawback that it was expensive.

(Means for Solving the Problems) This invention has been made to solve the above problems, and its gist is to form a pool for storing water for snow melting with the sloping roof surface and side walls. A water sprinkler is placed at the top of the roof to melt the snow at the top, and the pool is equipped with a drainage mechanism that drains the water so that the water level in the pool is lower than the top of the roof. The roof snow removal device is characterized by the following:

(Function) Most of the snow on the top of the sloping roof surface is directly melted by sprinkled water, and this snowmelt water and sprinkled water are stored in a pool and distributed at the base of the roof surface. Used for snow melting.

Therefore, snow melting is performed reliably, snowpack is prevented from falling, and the thermal energy of water can be effectively utilized for snow melting.

Also, the water level in the pool is lower than the top of the roof, so the amount of water stored in the pool is small.
There is no need for the house to have a special structure to withstand a large amount of weight.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings of FIGS. 1 and 2.

FIG. 1 shows a roof snow removal device according to the present invention, and each arrow in the figure indicates the direction of water flow.

In FIG. 1, numeral 1 is a house, 20 is a water tank, 30 is a hot water boiler, and 40 is a supplementary water tank.

The water tank 40 is installed at a predetermined height above the ground, while the water tank 20 is buried underground.

City water is supplied to the replenishment water tank 40 through a flow path 51, and a float valve 51a provided at the tip of the flow path 51 keeps the amount of water stored in the replenishment water tank 40 constant. has been done.

Replenishment water tank 40 is connected to water storage tank 20 via flow path 52 .

The tip of the flow path 52 having a float valve 52a is inserted into the water storage tank 20, and by automatically opening and closing the float valve 52a, makeup water is supplied from the makeup water tank 40 or the supply is stopped. The amount of water stored in the water tank 20 is always kept constant.

The water tank 20 has an overflow pipe 21, the overflow pipe 21 penetrates a predetermined dimension above the normal water level 22 of the water tank 20, and one end disposed inside the water tank 20 extends to the bottom of the water tank 20. The other end, which is disposed outside the water tank 20, extends downward and is connected to an underground drainage pipe (not shown).

Further, a siphon breaker 21a is provided at the top of the overflow pipe 21.

As a result of configuring the overflow pipe 21 in this way, when water overflows from the water storage tank 20, it is drained from the bottom where the water temperature is low, and the water storage tank 20 is drained by the operation of the siphon breaker 21a. The water level never drops below the regular water level 22.

Further, the water storage tank 20 and the hot water boiler 30 are connected through channels 53 and 54.

The flow path 53 has one end inserted into the water storage tank 20 to a relatively deeper position than the normal water level 22, and the other end connected to the inlet of the hot water boiler 30.

The flow path 54 has one end connected to the outlet of the hot water boiler 30, and the other end inserted into the water storage tank 20 and opened above the normal water level 22.

A house 1 has a roof 10, and a side wall 11 is provided at the edge of the roof 10, and a pool 2 is formed surrounded by this side wall 11.

Upper surface 10a of roof 10 (hereinafter referred to as the roof surface)
is sloped on both sides with peak 3 at the center.
Furthermore, this slope is very small, approximately 1/30 to 1/20.
It is set to 0.

A waterproof sheet (not shown) is attached to the roof surface 10a and the side walls 11.

In the roof 10, a second
As shown in the figure, a plurality of pipes 5 connected to a return flow path 56 penetrate the roof 10. The upper end 5a of this pipe 5 is flush with the roof surface 10a and is open.

An overflow pipe 6 (drainage mechanism) is detachably attached to the upper end 5a of the pipe 5.

The overflow pipe 6 includes a pipe portion 6a, a lower flange portion 6b provided in the middle of the pipe portion 6a, and an upper flange portion 6c provided at the upper end of the pipe portion 6a.
Head 6d provided at the top of the upper flange portion 6c
The head 6d has an opening 6e.

The overflow pipe 6 is installed by inserting the pipe part 6a below the lower flange part 6b into the pipe 5, and bringing the lower flange part 6b into contact with the bottom surface 2a of the pool 2 and the upper end 5a of the pipe 5. At that time,
The upper flange portion 6c is configured to be lower than the top 3 of the roof surface 10a by a predetermined dimension.

In the following description, the portion above the level of the upper flange portion 6c of the overflow pipe 6 will be referred to as the top portion 2A, and the portion below will be referred to as the foot portion 2B.

Note that the return flow paths 56 each extend downward, merge, and are connected to the water storage tank 20.

Moreover, above the top part 3 of the roof surface 10a,
A sprinkler pipe 4 (water sprinkler) extending along the ridgeline at the top is arranged, and the sprinkler pipe 4 is connected to the water supply channel 55.
It is connected to the water tank 20 via.

The starting end of the water supply channel 55 is inserted into the water storage tank 20 and is slightly submerged below the normal water level 22.

Also, a water supply pump 55 is installed in the middle of the water supply channel 55.
a is placed.

In the above configuration, the snow 60 on the roof 10 is melted as follows.

Relatively warm water located above the water tank 20 is pumped up by the water supply pump 55a and sent to the water sprinkler pipe 4 through the water supply channel 55.

Water is continuously sprinkled from the water pipe 4 to the top 2A, and the snow accumulated on the top 2A and the top 2 are
The snow falling at A (hereinafter referred to as the snow at the top 2A) is
It is melted by this water.

The snowmelt water and the sprinkled water flow into the pool 2 and are stored there.

Also, some of the snow on the top 2A is snowpack 6.
It flows to the base part 2B as it is 0a.

Although the water accumulated in the pool 2 has less thermal energy than the water sprayed from the sprinkler pipe 4 by the amount used to melt snow at the top 2A, it still has enough thermal energy to melt snow. .

Therefore, the water in the pool 2 is composed of the snow that has accumulated on the base portion 2B, the snow that falls on the base portion 2B (hereinafter referred to as snow on the base portion 2B), and the snow mass 60.
Melt a.

The water in these pools 2 flows through the openings 6e of each overflow pipe 6.
The water overflows from the water, flows through the pipe 5, and flows into the water storage tank 20 through the return channel 56.

Therefore, the water level of the pool 2 is always maintained at the level of the upper flange portion 6c of the overflow pipe 6, that is, a level lower than the top 3.

Moreover, since the slope of the roof surface 10a is small, the amount of water stored in the pool 2 can be extremely small.

Therefore, the house 1 does not need to have a special structure that can withstand the weight of a large amount of water.

In addition, snow masses 60a, garbage, etc. larger than the opening 6e floating in the pool 2 are removed from the head 6d of the overflow pipe 6.
Since the water is blocked by the water and does not flow into the overflow pipe 6, the pipe 5 and the return flow path 56 are prevented from being blocked.

Further, since water is continuously sprayed from the water sprinkling pipe 4, the water in the pool 2 always flows and does not freeze.

Furthermore, relatively cold water taken from a deep position in the water tank 20 is circulated to the water tank 20 heated by the hot water boiler 30.

The amount of heat given from the hot water boiler 30 is adjusted to be approximately equal to the amount of heat of melting the snow 60, and the temperature of the water sprinkled onto the roof 10 is maintained approximately constant.

In addition, the water returning from the return channel 56 to the water storage tank 20 is increased by the amount of snowmelt water and flows into the water storage tank 20, so the increased water flows into the overflow pipe 21.
drained from the water.

In addition, when it is not snowing season, remove the overflow pipe 6,
It is also possible to use the pipe 5 as a drainage outlet for rain falling on the roof 10.

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible.

For example, the water drained from the pool may be drained without having to be sprinkled again to melt snow.

(Effects of the Invention) As explained above, according to the present invention, the water sprinkled on the top of the roof of the pool melts the snow on the top, and this water and melted snow are poured into the pool. Once stored, the water in this pool is used to melt the snow at the foot of the pool, so the sprinkled water is used extremely effectively to melt the snow, resulting in energy savings.

Furthermore, the snow can be melted reliably, eliminating the risk of snowflakes sliding to the ground.

Furthermore, since the amount of water stored in the pool can be reduced, there is no need for the house to have a special structure to withstand the large weight of the pool water, leading to cost reductions.

[Brief explanation of drawings]

The drawings in FIGS. 1 and 2 show an embodiment of the present invention, and FIG. 1 is a schematic diagram of a snow removal device, and FIG. 2 is a sectional view of a main part of a roof. 2...pool, 2A...top, 2B...base, 3
…Top, 4…Sprinkler (sprinkler pipe), 6…Drainage mechanism (overflow pipe), 10…Roof, 10a…Roof surface, 11…
side wall.

Claims (1)

[Claims] 1 The sloping roof surface and side walls form a pool that stores water for snow melting, and a water sprinkler is placed at the top of the roof surface to melt the snow at the top, and the water level in the pool is A snow removal device for a roof, characterized in that a drainage mechanism for discharging water in the pool is provided at a level lower than the top of the roof surface.