JPH0346633B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for melting snow on a roof, and in particular, a method for guiding warm air forcibly sent from an indoor heater or a hot air generator to both sides of the back of a roof member. Concerning a roof snow melting method using a method.

[Conventional technology]

Conventionally, in this type of roof snow melting method, hot air introduced into the air outlet on the eaves side passes through the spaces between the supporting parts of multiple roofing materials and the spaces within the supporting parts to warm the roofing materials. is publicly known.

[Problem that the invention seeks to solve]

In the above-mentioned conventional technology, the warm air introduced into the air outlet on the eaves side flows all at once toward the space from the opening formed almost entirely on the eaves and diffuses over the entire attic surface. There was a problem that the wind flow was weak and uneven, and the snow on the roof surface was only partially melted, and a large amount of snow fell on the roof, which was dangerous, and left behind dew and stuffiness.

Therefore, an object of the present invention is to provide a method for melting snow on a roof, which allows the heat of warm air to keep the roof surface well warm, prevents snow from falling on the roof, allows the snow to naturally melt as a whole, and eliminates dew condensation and stuffiness. shall be.

[Means for solving problems]

In the present invention, a pair of upper and lower folded plates having a substantially corrugated cross section are disposed so as to face each other and have a slope to form a plurality of rows of warm air flow passages between the upper and lower folded plates. An expanded metal roof member is provided on top, and the warm air that flows into the hot air passage from the warm air inflow passage on the eaves side passes through the warm air passage and insulates the roof surface, and this insulation melts snow and removes dew condensation. This is a roof snow melting method in which the snow melting water generated at the same time passes through the through holes in the roof member, flows over the upper folded plate, and is drained.

[Effect]

Snow on the roof is prevented from falling by expanded metal roof members, while warm air passes through multiple rows of sloping warm air passages to insulate the roof surface, and this insulation melts the snow on the roof. At the same time, dew condensation is removed, and the melted snow water passes through the holes in the expanded metal roof member and flows over the upper folded plate to be drained.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

Figures 1 to 4 show one embodiment of the present invention. In the figures, 1 is a field board extending from the eaves to the ridge, and asphalt roofing 2 is placed on it.
is provided. Reference numeral 3 denotes a warm air inflow path formed in communication with the indoor room 4 toward the main house on the side of the eaves, and has a duct 5 made of metal or synthetic resin and having a substantially L-shaped cross section. 6 and 6a are upper and lower folded plates with a substantially corrugated cross section made of a metal material with good thermal conductivity such as an iron plate, which are provided on the asphalt roofing 2 with an appropriate slope from the eaves to the ridge. Moreover, the lower folded plates 6 and 6a are arranged to face each other, and a large number of parallel warm air flow passages 7 each having a substantially rhombic cross section are formed. Further, a communication port 8 to the indoor room 4 and the second floor is formed on the ridge side of the warm air flow path 7. Reference numeral 9 denotes an expanded metal roof member formed by pressing expanded metal and coated with resin, and is disposed on the upper folded plate 6. Further, the duct 5 is arranged at the end of the lower folded plate 6a to form the warm air inflow path 3, and the upper folded plate 6 is extended to the eaves side, and the upper folded plate 6 is provided at the end of the upper folded plate 6. Gutter 10
has been established. 11 is a heat insulating material stretched over the lower surface of the lower folded plate 6a, 12 is a heater such as a hot water pipe installed in the duct 5 or gutter 10, 13 is an underfloor ventilation opening, and 14 is an attic ventilation opening.

When the ventilation openings 13 and 14 are closed, the warm air of daily heat energy generated by heating heat in the room 4 naturally flows from the warm air inlet path 3 into the warm air flow path 7, which is provided in parallel and has a substantially rhombic cross section. As it is introduced, it flows along the slope to the ridge side and is circulated from the communication port 8 to the indoor 4 or second floor side, and the roof surface is kept warm by heat conduction through the upper and lower folded plates 6, 6a, and melts snow and dehumidifies it. . On the other hand, the snow 15 on the expanded metal roof member 9 bites into the diamond-shaped portions 9a of each unit part of the expanded metal and is prevented from falling due to sliding, and the expanded metal roof member 9 is prevented from falling in this way. Snowfall above 15
The snow melts well due to the heat retention by the above-mentioned warm air flow, and the melted snow water passes through the through holes 9b of the roof member 9 and flows through the water channels 16 formed in parallel on the upper folded plate 6 into the gutter 10. drained from the water. Further, the condensed water is drained into the duct 5 through the lower folded plate 6a.

In this way, in the above embodiment, on a substantially corrugated cross-sectional surface made of a metal material with good thermal conductivity such as an iron plate,
Since the lower folded plates 6, 6a form a large number of parallel hot air passages 7 each having a substantially rhombic cross section, each hot air passage 7 is composed of the integral upper and lower folded plates 6, 6a, and the heat generated by the warm air is transferred to the upper and lower sides. The heat is transmitted well to the entire roof surface by the heat conduction of the lower folded plates 6, 6a. Moreover, since it has a double structure with upper and lower folded plates 6 and 6a, it can sufficiently withstand snow loads. Further, the warm air in the warm air flow passage 7 is distributed throughout the entire body due to the airflow effect, and the heat effectively melts snow and dehumidifies the air. Furthermore, when iron plates are used for the roof surface, if a layer of water forms between the iron plate surface and the snow, an avalanche phenomenon may occur and there is a risk of falling snow. Therefore, the hot air passage 7 can be effectively prevented from falling snow without causing the avalanche phenomenon.
The snow can be naturally melted by the heat of the warm air inside, and the melted snow water can be drained well by the upper folded plate 6. In this case, the snow on the roof also has an insulating effect. Also, since expanded metal is used, it is hard to bend and has good durability. In addition, the wall insulation is external insulation, a cavity 17 is formed between the wall 4a of the room 4, and the cavity 17 is used to transfer daily heat energy to the cavity 1.
The natural convection between the 7 spaces is passed through the ceiling, and the heat and snow melting.
Thermal efficiency is good because the warm air is used for dehumidification.
In addition, by closing the ventilation ports 13 and 14 in the winter and opening them in the summer, internal heat is quickly released outdoors in the summer as shown by the arrows in Figure 4, and in the winter as shown in Figure 1. As shown by the arrow, the heat storage effect of each building material and member can be effectively utilized. Furthermore, as shown in Figure 1, under the floor, concrete 1 is placed on top of a moisture-proof sheet 18 to prevent moisture.
9, concrete 1
The heat stored in 9 is gradually radiated after the indoor heating is turned off, and can be circulated and warmed throughout the house until the heating starts the next morning. In addition, in the summer, the folded plates 6 and 6a made of iron plates or the like are heated by sunlight, and an upward air current is generated in the warm air passage 7, which is discharged from the attic ventilation opening 14.
The air entering from 3 is cooled by the concrete 19 and rises, gradually removing the hot air in the room 4, thereby absorbing radiant heat and making the room cooler. On the other hand, at night in summer, the folded plates 6, 6a tend to get cold, so the cooled and dehumidified air moves downward, making it cooler. Further, the roof slope is preferably 15 degrees or more in order to generate convection within the warm air passage 7.

Note that the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, although the substantially wavy shape of the folded plate has been shown as a continuous trapezoid, continuous shapes such as a rectangle, a semicircle, a triangle, etc. may be appropriately selected. Further, the shape of the expanded metal unit portion may be selected as appropriate. It can also be applied to various types of buildings such as wooden structures and prefabricated steel frames. Further, the upper folded plate 6 may be communicated with the gutter 10 without extending as shown in FIG. Further, as shown in FIG. 6, an expanded metal roof member 9 is extended to the upper part of the gutter 10 so that snow is accumulated up to the upper part of the gutter 10 to provide insulation, and the warm air inflow path 3 is placed near the gutter 10. The gutter 10 may be kept warm by warm air.

[Effects of the Invention] The present invention effectively insulates the expanded metal roof surface with the warm air flowing through the hot air circulation formed by the folded plates having substantially corrugated cross sections at the upper and lower portions, and prevents snow from falling on the roof surface. To provide a roof snow melting method capable of naturally melting snow overall while preventing dew condensation and dampness.

[Brief explanation of drawings]

Fig. 1 is an overall vertical sectional view, Fig. 2 is a perspective view of the main parts, Fig. 3 is a perspective view of the expanded metal roof member, Fig. 4 is an explanatory diagram showing the air cycle state in summer, Fig. 5 and FIG. 6 is a sectional view showing another embodiment. 3... Warm air inflow path, 6, 6a... Folded plate, 7...
Warm air passageway, 9... Expanded metal roof member.

Claims (1)

[Claims] 1. A pair of upper and lower folded plates having a substantially corrugated cross section are arranged so as to face each other and have a slope to form a plurality of rows of warm air flow passages between the upper and lower folded plates. Equipped with an expanded metal roof member,
Warm air flowing into the warm air flow path from the warm air flow path on the eaves side passes through the warm air flow path and insulates the roof surface, and the snowmelt water generated by this heat retention passes through the through holes in the roof member and flows over the upper folded plate. A roof snow melting method characterized by draining water.