JPH0226032B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention prevents the snow melting section from freezing late at night by gently blowing indoor warm air late at night to the snow melting section of the snow melting device, and improves the snow melting by blowing hot air from the boiler the next day. This relates to a snow melting method for butterfly-type snow melting roofs that can achieve high snow melting effects.
A snow collecting area is formed in the center by making the left and right slopes of the metal plate roof with sloping walls higher toward the outside, and a drainage pipe is installed at the end with a running water slope in the length direction of this snow collecting area. The snow melting roof is equipped with a snow melting device that emits warm air into the snow collecting area, and the snow melting device is equipped with a fan that sucks and blows warm air so that it can be switched between strong and weak, and the snow melting boiler is ignited to melt the snow. When supplying hot air to the snow melting equipment, the fan is set to high, and when the snow melting boiler is turned off at night, the fan is switched to low, and indoor warm air is introduced into the blower of the snow melting boiler. It is characterized by sending warm air to prevent the snow melting area from freezing.

Further examples of implementation are as follows.
In the drawing, the left and right slope of a roof 2 made of a metal plate with a sloping wall 1 erected around it is made higher toward the outside, and a snow collecting part 3 is formed in the center.

The snow collection section 3 is made by bending a relatively thick iron plate 4 of about 3.2 mm, the surface of which is color-painted, into a square cross section, and a tin roof 5 is installed on both sides.

A drainage pipe 6 is installed vertically at the end of the snow collection section 3 with a running water gradient in the length direction.

A through pipe 7 is provided between the lower end of the drain pipe 6 and indoors, a ventilation fan 8 is provided on the indoor side of the through pipe 7, and the warm air inside the room is sucked in by the ventilation fan 8 and made to flow up inside the drain pipe 6. It may be provided to prevent the drain pipe 6 from freezing.

The sloped wall 1 is steeply sloped to about 2 feet, the left and right slope of the tin roof 5 is 3 inches reverse slope, and the running water slope is 5 inches.
Make it as gentle as a minute slope.

This snow collecting section 3 is provided with a warm air blowing type snow melting device a. The snow melting device a has a punched metal plate 9 for receiving snow stretched above the snow collecting section 3, a main pipe 10 arranged on the punched metal plate 9, and a roof connected to the roof at appropriate intervals on both sides of the main pipe 10. Branch pipe 1 according to the slope
1 is installed protrudingly.

A hot air blower pipe 12 is suspended from one end of the main pipe 10.
A fan 15 is connected to a snow melting boiler 14 in a boiler room 13 on the floor, and a fan 15 whose strength can be switched in two ways is provided in the middle of a hot air blowing pipe 12.

This switching between strong and weak air is achieved by installing two fans in the two airflow paths, one that blows strongly and one that blows weakly.
These two fans may be provided so as to be used selectively.

A branch pipe 16 is provided in the middle of the warm air blowing pipe 12, this branch pipe 16 is connected to the attic between the first floor and the second floor, and a damper 17 for opening and closing the air blowing is provided on this branch pipe 16.

An introduction window 18 for introducing warm air from each room on the first floor is provided in the ceiling wall of the first floor.

A switch 19 is provided in the boiler room 13 to switch the fan 15 to two different strengths, and the snow melting boiler 14
When the snow melting boiler 1 is lit, turn on the strong switch 19 to blow hot air strongly to the snow melting device a, and turn on the snow melting boiler 1.
4, open the damper 17 and turn on the low switch 19 to gently blow indoor warm air into the snow melting device a.

Two strong and weak fans are installed, and when a separate ventilation route is provided, warm air from the attic is introduced into the boiler room.
A weak fan may be installed in the boiler room to introduce warm air from the entire boiler into the hot air pipe.

Warm air or warm air is sent to the main pipe 10 by a fan 15, and the warm air is discharged from the discharge hole 20 of the branch pipe 11. The ceiling wall 21 uses insulation material to block indoor warm air, and the sloped wall 1 is equipped with a ventilation pipe 23.
A ventilation window 24 is provided to prevent condensation in the butterfly-type attic.

Further, a ventilation fan 8 is provided inside the inclined wall 1, a warm air intake pipe 25 is provided on the ventilation fan 8, and this warm air intake pipe 25 is connected to a warm air exhaust pipe 27 provided in the rain gutter 26 on the lower surface of the inclined wall 1. The warm air in the sloped wall 1 is discharged from the discharge hole 28 of the warm air discharge pipe 27 to the rain gutter 26 to connect the rain gutter 26 and the sloped wall 1, and form icicles on the lower surface of the rain gutter 26 and the sloped wall 1. It may also be provided to prevent this.

A snow eave falling plate 29 is provided on the upper part of the inclined wall 1, a hot air pipe 30 for the snow eave is arranged within this snow eave falling plate 29,
This warm air pipe 30 for snow eaves is also provided to blow warm air.

A snow splitting plate 3 is installed to prevent only a portion of the snow that has flowed down to the snow collection section 3 from melting and forming a tunnel shape.
1 will be erected.

Further, heat transfer plates 32 are fitted over the entire width of the roof over the left and right branch pipes 11 arranged in parallel.

The heat transfer plate 32 has a wavy uneven edge on the base side so as to cover each branch pipe 11 one by one, and the uneven waveform on the tip side gradually disappears to become a flat plate.

The boiler room 13 is also used as a laundry drying room, but a hot air suction device 33 is further installed on the ceiling board, and the hot air sucked from the hot air suction device 33 is blown to an adjacent children's room 34, etc. The pipe 35 is installed to effectively use the preheating of the boiler room 13.

The hot air blowing pipe 12 is connected to a bathroom boiler 37 of a bathroom 36, and the warm air generated from the bathroom boiler 37 is also blown to the snow melting device a.

The hot air blower pipe 12 and the drain pipe 6 may be provided with a piping tunnel portion that vertically penetrates the building, and may be disposed in this piping tunnel portion to prevent connection.

Reference numeral 22 indicates a snow catcher punching metal plate stretched over the concave portion of the heat transfer plate 32, 38 indicates an air blower, and 39 indicates an introduction hole.

In general, shops and the like often adopt a type of roof with sloping walls on the roof to prevent snow from falling over the storefront and to give it a good appearance.

Although this sloped wall was useful for preventing snow from forming in the eaves, if a large amount of snow accumulated within the sloped wall, it would be necessary to remove the snow, which was extremely troublesome.

For this reason, the applicant devised a "butterfly-type snow-melting roof" for a utility model application filed on January 17, 1985, but it was uneconomical to leave the snow-melting boiler on all night, and there was a risk of fire. Because of the risk of snow melting, there has been a demand for a snow melting roof that can be cleared before going to bed, eliminating the need for snowfall.

If the snow melting boiler is turned off, the snow and moisture adhering to the snow melting section will freeze due to the drop in temperature in the middle of the night, and even if the snow melting device is activated the next day, it will not be able to properly discharge hot air if the middle is connected. .

For this reason, the snow melting section must first be unfrozen, and once it freezes for a while, it does not melt quickly, which has the disadvantage of significantly reducing snow melting efficiency.

The present invention prevents this snow melting section from connecting, so that the snow can always be melted in good condition even the next day.
When the snow melting boiler 14 is ignited to supply warm air to the snow melting device a, the fan 15 is set to high, and the snow melting boiler 1 is turned on at night.
4 is turned off, the fan 15 is switched to weak mode and indoor warm air is introduced into the blower device 38 of the snow melting boiler 14, and the indoor warm air is sent to the snow melting device a to prevent the snow melting section from connecting. Since it is legal, the fan 15 should be turned off while the snow melting boiler 14 is being ignited.
is set to high, a large amount of warm air from the snow melting boiler 14 is supplied to the snow melting device a, and this large amount of warm air rapidly melts the snow accumulated in the low snow collecting area 3 in the center of the roof, and the snow melting water is used to flow down the running water gradient. The attached snow collecting part 3 allows the snow to be immediately discharged from the drain pipe 6 without accumulating it.

After turning off the snow melting boiler 14 in the middle of the night, for example, open the damper 17 and turn down the fan 15, this time supply warm air from the living room on the first floor or other room where the heater was used all day to the blower device 38, and blow this warm air all at once. If you slowly blow air through the snow melting device a overnight, you can leave a small amount of water running overnight to prevent water from freezing, and in the same way warm air can be generated in the snow melting device a even if the snow melting boiler 14 is not fired all night. Since the air continues to be blown, freezing of the snow melting area is prevented.

In this way, the fan 15 is switched in two directions to continue melting the snow by blowing warm air from the snow melting boiler 14 during the day and blowing indoor warm air to the snow melting area by the blower device 38 at night, while at the same time the snow melting itself is slightly reduced in the middle of the night. However, since the snow melting section is prevented from freezing due to a drop in temperature at midnight, the normal operation of the snow melting device a is maintained the next day, making this a snow melting method for butterfly-type snow melting roofs that increases the snow melting effect accordingly.

Furthermore, the warm air used late at night is stored indoors during the day and does not require a special heat source, making it very economical.

As mentioned above, snow melting can proceed effectively at any time by simply operating snow melting device a within the time that family members can manage.
This is an excellent snow melting method for butterfly-type snow melting roofs that does not require snow removal even when a large amount of snow falls.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the method implemented, Fig. 2 is a perspective view of a part of the snow melting device, Fig. 3 is a sectional view thereof, Fig. 4 is an explanatory diagram of the hot air blowing state, and Fig. 5 is the roof. It is a sectional view of a part. a...Snow melting device, 1...Slanted wall, 2...Metal plate roof, 3...Snow collecting section, 6...Drain pipe, 14...
Snow melting boiler, 15...fan, 38...blower device.

Claims (1)

[Claims] 1. A metal plate roof with sloping walls around it has a slope higher toward the outside to form a snow collection area in the center, and a drainage pipe is installed at the end with a running water gradient running along the length of this snow collection area. On a snow melting roof that is installed vertically and is equipped with a snow melting device that emits warm air into the snow collecting area, a fan that sucks and blows hot air to the snow melting device is installed so that it can be switched between two strong and weak modes, and the snow melting boiler is ignited. When supplying warm air to the snow melting equipment, the fan is set to high power, and when the snow melting boiler is turned off at night, the fan is switched to low power, and indoor warm air is introduced into the blower of the snow melting boiler. A snow melting method for a butterfly-type snow melting roof that is characterized by sending warm air indoors to prevent the snow melting section from freezing.