JPH046424Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a drainage system for a building that drains melted snow, rainwater, etc. accumulated on the roof of a building.

``Conventional technology'' In snowy regions, snow accumulates on the roofs of buildings. For this reason,
Recently, snow is melted using snow extinguishing devices that utilize indoor exhaust heat or geothermal heat, and the melted water is drained through drainage devices such as gutters. However, conventional drainage devices simply guide water from a rain gutter or the like to a drain pipe buried underground through a downspout. For this reason, when the water travels down the inner wall surface of the downspout, it freezes midway, and in severe cases, the downspout may become clogged or burst.

``Purpose of the present invention'' In view of the above-mentioned drawbacks of the conventional technology, the present invention solves the problem of water freezing in the middle of the downspout when draining water from rain gutters etc. to drainage pipes buried underground, especially in winter. The object of the present invention is to obtain a drainage system for a building that can reliably prevent downpipes from clogging or bursting.

"Means for Achieving the Object of the Present Invention" The present invention consists of a downspout that guides water from a rain gutter, etc. to a drainage pipe buried underground, and a downspout that is interposed in the middle of the downspout. An interposed pipe that allows the water flowing down along the inner wall surface to flow down away from the inner wall surface and that can store heat; It is characterized by comprising a heating device that prevents the flowing water from freezing.

"Embodiments of the present invention" The present invention will be described in detail below with reference to embodiments shown in the drawings.

In the embodiments shown in FIGS. 1 to 4, reference numeral 1 denotes a drainage device of the present invention for draining rainwater or melted snow that has fallen on the roof 3 of a building 2. As shown in Figure 3, one end of the rain gutter 4 is opened at the end of the roof 3, and the other end is connected to a drain pipe 5 buried underground. Downspout 6 that guides water to the drain pipe 5
and an interposed pipe 7 which is interposed in the middle of this downpipe 6 and can allow the water flowing down along the inner wall surface of the downpipe 6 to flow down away from the inner wall surface and can store heat; The heating device 8 is attached to the pipe 7 and stores heat in the pipe 7 in winter to prevent water flowing down the downpipe 6 from freezing.

The downpipe 6 is slightly larger than the upper pipe 10 connected to the rain gutter 4 and connected to the upper pipe 10 to which a wire mesh 9 is attached to prevent dirt from entering the upper opening, and the upper pipe connected to the drain pipe 5. Lower pipe 11
It is made up of. In addition, it is preferable to use a polyethylene resin pipe with excellent heat insulation properties or to wrap a heat insulating material around the downspout 6 to reduce heat loss within the downspout 6.

The interposed pipe 7 is made of a noncombustible material such as a metal material, and is formed into a truncated cone-shaped cylinder whose lower end has a small diameter, and whose upper end is connected to the lower end of the upper pipe 10 of the downspout 6. 10 is inserted and fixed in an inserted state, and the lower end portion is inserted and fixed in an inserted state in the upper end portion of the lower pipe 11.

The heating device 8 includes a heat collecting pipe 12 formed protruding from the outer circumferential wall of the interposed pipe 7, and a blowing outlet 13 inserted and fixed into the opening at the tip of the heat collecting pipe 12. The heating device 8 blows hot air into the heat collecting pipe 12. Fan heater 14 to supply
The heat (warm air) in the heat collecting pipe 12 supplied by the fan heater 14 is transferred to the interposed pipe 7.
The interposed pipe 7
A communication hole 15 is formed in the peripheral wall surface of the holder.

In addition, the peripheral wall surface portion of the interposed pipe 7 located at the lower end in the heat collecting pipe 12 has the interposed pipe 7
A hole 16 is formed to allow water flowing down inside the heat collecting pipe 12 to flow back into the heat collecting pipe 12 when the water flows into the heat collecting pipe 12 through the communicating hole 15 .

Reference numeral 17 denotes a snow removal device for melting snow accumulated on the roof 3 of the building 2, and as shown in FIGS. 1 and 4, at least the lower part of this snow removal device 17 is located at a depth equal to or higher than the freezing depth. A plurality of bottomless tanks 18 are installed around the building 2, and one end communicates with the upper part of the tank 18, and the other end has an upper opening in the rain gutter 4 provided at the end of the roof 3. 1
A plurality of pipes 19 with projecting portions 9a and eaves 20 constituting the frame of the building 2 are made to project, and the roof 3
a prevention member 21 that prevents snow accumulated on the roof 3 from sliding down to the ground from the end of the tank 18; and a heat collection pipe 22 that communicates with the lower part of the tank 18 and into which underground water flows, the tank 18 side being located at the top. It is composed of.

The blocking member 21 is formed integrally with the eaves 20 or protrudes through a mounting bracket, and has a triangular shape in which the outer member 21A has an angle smaller than a right angle with respect to the eaves 20, and the upper part thereof is formed in a triangular shape with an angle smaller than a right angle to the eaves 20. covered by a member.

Further, a support member 21B that supports the rain gutter 4
may be set within a range of about 45° to 90° with respect to the eaves 20.

Preferably, the pipe 19 is made of a polyethylene resin pipe with excellent heat insulation properties, similar to the downspout 6 of the drainage system 1, or is wrapped with a heat insulating material to reduce heat loss within the pipe 19. .

In the building drainage system 1 having the above structure, the heating device 8 stores heat in the intervening pipe 7 during the winter. That is, the fan heater 1 of the heating device 8
4 is activated to send heat (warm air) into the intervening pipe 7 through the heat collecting pipe 12 and the communication hole 15.

As a result, the interposed pipe 7 accumulates heat, and the inside of the upper pipe 10 of the downspout 6 is heated to a temperature higher than the freezing temperature due to the convection phenomenon.

When snow accumulates on the roof 3 in this state, the rain gutter 4 is covered with snow, but the snow in the rain gutter 4 is melted by the snow removal device 17. That is, since the temperature inside the tank 18 is 9° to 15° due to geothermal heat (groundwater), the heat inside the tank 18 is transferred to the pipe 1 by convection.
9 and is emitted from the upper opening 19a.

At this time, the snow accumulated near the upper opening 19a of the pipe 19 protruding into the rain gutter 4 is melted. The melted water in the rain gutter 4 created by this melting snow is drained into the drainage system 1.
The melted water flows into the upper pipe 10 of the downspout 6, and this flowing melt water flows down to the interposed pipe 7 along the inner wall surface.

At this time, since the inside of the upper pipe 10 is heated to a temperature higher than the freezing temperature, the water flows down without freezing midway.

Thereafter, the melted water that has flowed down into the interposed pipe 7 falls into the lower pipe 11 of the downspout 6 through the truncated cone-shaped lower end opening formed at the lower end without being transmitted to the inner wall surface of the lower pipe 11. The water flows down into the water and is drained into the drain pipe 5. Therefore, the melted water in the rain gutter 4 can be reliably drained without freezing on the way.

"Different Embodiments of the Present Invention" Next, different embodiments of the present invention shown in FIGS. 5 and 6 will be described. In the description of these embodiments, the same components as those of the embodiments of the present invention will be designated by the same reference numerals and redundant explanations will be omitted.

In the embodiment shown in FIG. 5, the main difference from the embodiment of the present invention is that the heating device 8A is replaced with a fan heater, and one end is connected to the heat collecting pipe 12, and the other end is connected to the indoor room 23 of the building 2. , a ventilation pipe 2 having a fan 24 capable of ventilating the room 23
5, the heating device 8A may be configured to store heat in the intervening pipe 7 using exhaust heat from the room 23 as described above.

The main difference between the embodiment of FIG. 6 and the embodiment of the present invention is that the heating device 8B is connected to the intervening pipe 7.
In that the heater 26 is wound around the outer circumferential surface of the heater 26, the heating device 8B having the heater 26 as described above may be used.

"Effects of the Present Invention" As is clear from the above explanation, the present invention has the following effects.

(1) A downspout that guides water from rain gutters, etc. to a drainage pipe buried underground, and a downspout that is installed in the middle of the downspout to direct water that flows down through the inner wall surface from the inner wall surface. An interposed pipe that can flow down a distance and store heat, and a heating device attached to the interposed pipe that stores heat in the interposed pipe in winter to prevent water flowing down the downspout from freezing. With this configuration, by storing heat in the interposed pipe using the heating device, the inside of the downspout can be heated to a temperature higher than the temperature at which water freezes. Therefore,
It is possible to reliably prevent the water flowing down the inner wall surface of the downspout from freezing and clogging or bursting the downspout.

(2) According to (1) above, water flowing down the inner wall of the downspout can be made to flow down by the interposed pipe inserted in the middle of the downspout so that it does not flow down the inner wall. . Therefore, water flowing down the downspout on the downstream side of the interposed pipe can be flowed down in a state where it is difficult to freeze.

(3) Since it has the simple structure described in (1) above, it can be installed relatively easily. Additionally, existing drainage equipment can be easily modified.

(4) If a drainage system and snow extinguishing system are installed together, the water melted by the snow extinguishing system will be drained away by the drainage system, and the cold melted water will flow into the pipe that releases the heat from the snow extinguishing system. There is no inflow. Therefore, snow removal can be carried out efficiently.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an installed state of an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is an enlarged view of the main parts of FIG. 2. FIG. 4 is a sectional view taken along the line BB in FIG. 1, and FIGS. 5 and 6 are explanatory diagrams showing different embodiments of the present invention. 1... Drainage system, 2... Building, 3... Roof, 4
... Rain gutter, 5 ... Drain pipe, 6 ... Downpipe, 7 ... Interposed pipe, 8, 8A, 8B ... Heating device, 9 ...
Wire mesh, 10... Upper pipe, 11... Lower pipe, 12... Heat collection pipe, 13... Outlet part, 14
...Fan heater, 15...Communication hole, 16...
Hole, 17... Snow removal device, 18... Tank, 19...
... Pipe, 20 ... Eaves, 21 ... Blocking member, 21
A... Outer member, 21B... Supporting member, 22...
Heat collection pipe, 23...Indoor, 24...Fan, 2
5...Ventilation pipe, 26...Heater.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A downspout that guides water from a rain gutter, etc. to a drain pipe buried underground, and water flowing down through the inner wall surface of the downspout that is interposed in the middle of the downspout. An interposed pipe that allows water to flow down away from the inner wall surface and can store heat; and an interposed pipe attached to the interposed pipe that stores heat in winter to prevent water flowing down the downspout from freezing. A drainage system for a building, characterized in that it consists of a heating device for preventing. 2. The drainage system for a building according to claim 1, wherein the intervening pipe is made of a noncombustible material such as a metal material. 3. The drainage system for a building as claimed in claim 1 or 2, wherein the lower end of the interposed pipe is formed into a cylindrical shape with a truncated cone shape having a smaller diameter at the lower end. 4. The heating device includes a heat collecting pipe formed protruding from the outer circumferential wall of the interposed pipe, a fan heater that supplies hot air into the heat collecting pipe whose blowout port is inserted and fixed into the tip opening of the heat collecting pipe, and the fan heater. and a communication hole formed in the interposed pipe so that heat generated by hot air in the heat collecting pipe supplied by the heat collecting pipe can be sent into the interposed pipe. A drainage system for a building according to any one of claims 1 to 3 of the claims for new patent registration. 5. A drainage system for a building according to any one of claims 1 to 3, wherein the heating device is a heater wrapped around the outer circumferential surface of an interposed pipe.