JPH0312932Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a roof snow melting device used to melt snow that has fallen on a roof.

[Technical background of the invention and its problems]

In areas with heavy snowfall, snow is removed from roofs every winter, but the footing is poor and there is a risk of slipping and falling, and the snow that is removed from the roof accumulates on the road and becomes a hindrance to traffic. , there is the hassle of having to deal with the snow again, and these tasks are extremely hard labor, and even if you ask for help to remove the snow,
It was difficult to gather the desired number of personnel at the desired time.

Therefore, various methods have been used to remove snow from roofs, one of which was to pump relatively warm water, such as underground water, up to the ridges of the roof and sprinkle it on, using the heat to melt the snow.

However, since the above-mentioned sprinkler-type snow melting equipment sprinkles water from the ridges of the roof, there is uneven snow melting, such as the snow melting on the ridges but not the snow on the eaves, and the amount of snow falling is large. As a result, it is necessary to pump up a large amount of groundwater, which raises the risk of the groundwater drying up.Continuing to water for a long period of time can often damage the roof, and what's more, the temperature drops when not in use. Then,
The water in the pipes sometimes froze and became unusable.

[Purpose of invention]

The present invention was devised based on the above-mentioned circumstances, and it is an object of the present invention to provide a snow melting device for a roof that can efficiently melt the snow that has accumulated on the roof.

[Summary of the idea]

The outline of the roof snow melting device according to the present invention to achieve the above object is to connect a heat radiating part provided on the roof and a heat supply part provided in one corner of the house to an upper conduit from the upper end of the heat radiating part to the heat supply part and a lower end of the heat radiating part. They are connected by a downward conduit that reaches the heat supply section, and for the heat dissipation section, a panel with main pipes and branch pipes installed inside a flat box is laid across the entire roof, and the main pipe of each panel is In the heat supply section, a pump is connected to the boiler, and the water supply side of the boiler and the discharge side of the pump are respectively connected to an upper conduit and a lower conduit via a directional control valve, and the directional control valve The conduit communicating with the water supply side and the conduit communicating with the discharge side are always different, and a timer is attached to the directional control valve to switch the communication state at predetermined time intervals, and as a heat medium circulating in each of the above conduits. It is characterized by being filled with a mixture of antifreeze and water.

[Example of idea]

An embodiment of the roof snow melting device according to the present invention will be explained with reference to the drawings.The device of the present invention connects a heat dissipation section installed on the roof and a heat supply section installed in one corner of the house from the heat supply section to the upper end of the heat dissipation section. An upper conduit a extending from the heat supply section to a lower end of the heat dissipation section is connected to the lower conduit b extending from the heat supply section to the lower end of the heat dissipation section, and a mixture of antifreeze and water is circulated within the present device as a heat medium.

The heat dissipation section includes a top plate 1a, a bottom plate 1b, and a side plate 1c.
Panels 2 forming a flat box are placed and connected to the roof at equal intervals in the inclination and lateral directions, with gaps provided between them and the roof via legs 3 distributed on the lower surface of the panel 2. Each panel 2 is connected by a member 4, and each panel 2 has a large-diameter main pipe 5 passing through its upper and lower ends, and four small-diameter branch pipes communicating with the upper and lower main pipes 5 inside the panel 2. 6 are provided at equal intervals, each pipe 6 is fixed to the top plate 1a by horizontal ribs 7 and vertical ribs 8, and the panel 2 is reinforced, and a snow stopper plate 9 is attached to the lower end. The main pipes 5 of each panel 2 communicate with each other in the horizontal direction, with one end of the main pipe 5 at the top end connected to the upper conduit a, and the main pipe 5 at the bottom end connected to the upper conduit a.
One end thereof is connected to the lower conduit b, and the intermediate main pipe 5 has its sidemost end communicating with the upper and lower sides.

The heat supply section is connected to an upper conduit a and a lower conduit b via a directional control valve 11, and the directional control valve 11 is composed of a pair of electric three-way valves 11a and 11b, and the upper conduit a and the lower conduit b are connected to each other. is connected to a boiler 12 via an electric three-way valve 11a, and from the boiler 12 to an upper conduit a and a lower conduit b via a pump 13 and an electric three-way valve 11b,
The two electric three-way valves 11a and 11b are connected to different conduits a and b communicating with the heat supply section, and a timer 14 is provided to simultaneously switch the communication direction of the two electric three-way valves 11a and 11b at regular intervals. A thermometer 1 is installed between the electric three-way valve 11a and the water supply side of the boiler 12.
5a, flow meter 16a, expansion tank 17 and manual gate valve 18a, boiler 12 and pump 13
between the pump 13 and the electric three-way valve 11b, and between the pump 13 and the electric three-way valve 11b.
c, a flow meter 16b and a thermometer 15b are provided.

The device of the present invention is constructed as described above, and when snow has fallen, each manual gate valve 18a, 18b, 18c is opened, and the pump 133 is opened.
and activates the boiler 12 and timer 14.
Then, the heat medium heated by the boiler 12 passes through the pump 13, and at some times reaches the main pipe 5 at the upper end from the electric three-way valve 11b through the upper conduit a, and passes through the intermediate pipes 5 and 6 to the upper panel. Heat the main pipe 5 at the lower end while heating it in order from 2.
The water then returns to the boiler 12 from the lower conduit b via the electric three-way valve 11a. At that time, top plate 1
Panel 2 sealed with a, bottom plate 1b and side plate 1c
The air inside is heated by the heat medium, and the warmed air convects within the panel 2, uniformly warming each part of the panel 2, so the snow that has fallen on the panel 2 melts evenly and quickly. To go. After a while, each electric three-way valve 11a, 11b is activated by the timer 14.
is switched, and this time the heated heat medium flows from the electric three-way valve 11b to the lower conduit b, from the lower conduit b to the main pipe 5 at the lower end, and from the lower panel 2, it is heated sequentially and flows through the main pipe 5 at the upper end.
It returns to the heat supply section through the upper conduit a and the electric three-way valve 11a. In this way, the heat medium is also circulated from the bottom to the top of the heat radiating section, and the entire heat radiating section is heated more quickly and evenly than when the heat medium is circulated only in one direction, from the top to the bottom. Melt evenly. Further, each panel 2 is laid with a space provided between it and the roof by means of legs 3, and the air between the panel 2 and the roof is heated to melt the snow on the sides of the panel. Furthermore, in the summer, the upper surface of the panel 2 reflects sunlight and improves ventilation between the panel 2 and the roof, so you can stay cool indoors.

[Effect of idea]

As described above, in this device, the circulation path of the heat medium that warms the heat radiating section installed on the roof is reversed at regular intervals using a directional control valve and a timer that controls it, so that the entire heat radiating section is heated. Since it heats up quickly and evenly, there is no uneven snow melting, so there is no need to consume a large amount of energy unnecessarily.
In addition, since it uses a circulating mixture of antifreeze and water as a heat medium, there is no risk of damage or unusability due to freezing, and it can be used any time there is snowfall, and it can be used no matter what the conventional water spray type snow melting method. Unlike other devices, there is no need for an abundant water source such as underground water.

[Brief explanation of the drawing]

Fig. 1 is a piping diagram of the proposed device, Fig. 2 is a partially cutaway plan view of the panel, Fig. 3 is an enlarged vertical sectional view thereof, Fig. 4 is an enlarged sectional view taken along the line A-A in Fig. 2, FIG. 5 is an enlarged sectional view taken along line B--B in FIG. ...Heat radiation part, ...Heat supply part, a...Upper conduit, b...Lower conduit, 2...Panel, 5...Main pipe, 6...Branch pipe, 11...Directional switching valve, 12... Boiler, 13... Pump, 14...
…timer.

Claims (1)

[Scope of utility model registration request] The heat dissipation section provided on the roof and the heat supply section provided at one corner of the house are connected by an upper conduit a that extends from the upper end of the heat dissipation section to the heat supply section and a downward conduit b that extends from the lower end of the heat dissipation section to the heat supply section. In the heat supply section, a panel 2 with a main pipe 5 and a branch pipe 6 arranged inside a flat box is laid across the entire roof, and the main pipes of each panel are communicated with each other.
A pump 13 is connected to the boiler 12, and a directional control valve 11 is connected to the water supply side of the boiler and the discharge side of the pump, respectively.
The directional control valve is connected to the upper conduit and the lower conduit through the directional control valve, and the conduit communicating with the water supply side and the conduit communicating with the discharge side are always different, and the directional control valve is configured to switch the communication state at predetermined intervals. A snow melting device for a roof, characterized in that a timer is attached and each of the pipes is filled with a mixture of antifreeze and water as a circulating heat medium.