JP2003003620A - Roof snow-melting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a snow-melting cost, and to surely melt snow in the vicinity of an eave soffit while decreasing an adverse effect on a roof by treating the quantity of a flowing and a dropping to a section under the eaves in a reducible manner without storing snow water on the roof. SOLUTION: The snow water is evaporated, melting snow laying on a section B1 in the vicinity of the eave soffit by utilizing solar heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof snow melting apparatus, and more particularly to a snow melting apparatus suitable for snow melting of a snowless roof.

[0002]

2. Description of the Related Art In an area where houses are densely populated in an urban area of a heavy snowfall area, there is an example in which the snow on the roof causes a trouble between neighbors due to falling snow in the next house. In recent years, a roof called a snowless roof has been used in which the roof slope is a water slope to prevent snowfall.

By the way, the treatment of snow accumulated on a snow-free roof is currently performed by, for example, forced snow melting using an electric heater,
It is carried out by natural snow melting, snow removal by human power, etc. However, in the case of forced snow melting, it is extremely efficient in terms of snow melting, but conversely, it is too efficient and snow melting water may flow down the eaves and cause trouble to the next house. The amount of electricity is large and regular inspections are required, so the running cost is heavy. In the case of natural snow melting, the snow is melted by the heat of the sun's rays, but it is extremely difficult to melt because the sun's rays are hard to hit the roof facing north, for example. In other words, in addition to the unmelted residual snow, later snow accumulates, and if it is not removed, the initially accumulated snow will become root snow and will accumulate during the snowfall season.This accumulated snow will be applied to the roof as a load. It is possible that this snow load will adversely affect the house. However, snow removal by human power cannot be solved at all in terms of annoyance to the next house because the place where snow is dropped is extremely hard work and the snow is narrowed. Further, as a drawback of the snow-free roof, there is a case where the attic space is small and the heat insulation is incomplete. In this case, indoor heat is transferred to the roof surface and melts the snow on the roof, but since the indoor heat does not act on the eaves, snow remains and the remaining snow and snow melt water freeze in the eaves. However, the snowmelt water from other than the eaves will be blocked. The dammed snow melting water will infiltrate the joints of the roof and deteriorate the sealing material, and will also enter the inside of the roof through a small gap due to deterioration of the sealing material and poor construction due to capillary action. By doing so, leakage of suga and deterioration of roof components such as ground boards, rafters, and eaves boards can be seen.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is to reduce the snow melting cost, to melt the snow near the eaves reliably and quickly, and to store the snow melting water on the roof.
An object is to provide a roof snow-melting device that solves this problem by reducing the adverse effect on the roof by processing the amount of runoff under the eaves.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a roof snow melting device for evaporating the snow melting water while melting the snow accumulated near the eaves using solar heat. The technical means of adopting

[0006] Specifically, the roof snow melting is provided with a reflector 1 for reflecting the sun rays to heat the eaves near B1 and the reflected heat of the reflector 1 melts the eaves near B1. This is device A. (Claim 1)

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The reflecting surface 1A of the reflecting plate 1 includes all that can reflect sunlight, but it is preferable to use stainless steel in terms of reflection efficiency, durability and impact resistance. Is. (Claim 2)

In order to make the snowmelt and the snowmelt water evaporation more efficient, the heat from the sun's rays is stored in the reflector 1.
Utilizing far-infrared radiation heat due to heat storage in addition to reflected heat can be cited, and a technical means for achieving this is, for example, providing a heat insulating material 13 on the back surface of the reflecting surface 1A. (Claim 3)

The angle of the sun changes depending on the time, and the reflection efficiency of the sun's rays may decrease depending on the time. Therefore, the standing angle of the reflecting plate 1 is set so that the reflecting surface 1A approaches or separates from the illuminated surface. It is preferable to provide angle changing means 3 for adjusting the direction stepwise or steplessly. (Claim 4)

In order to assist the snow melting efficiency and the reduction of the snowmelt water, it is preferable to use a technical means for inclining the upper side of the reflector 1 toward the irradiated surface side. (Claim 5) Furthermore, a part or all of the reflecting surface may be curved.
(Claim 6) Also, in order to prevent snowfall, it is necessary to use a reflector 1
A snow stopper plate 4 may be provided at the lower end of the. (Claim 7)

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optimum embodiment of the roof snow melting apparatus A of the present invention will be described below with reference to FIGS. Roof snow melting equipment A
Is composed of a reflector 1 and a support 2 for supporting the reflector 1 and fixing it to the roof. The roof snow melting device A has a length over the entire length of the eaves in the snow-free type roof B, and irradiates the sunbeams near the eaves sky B1 by reflection. The form of the roof of the present embodiment is a form in which galvanized iron is used as a vertical roof and the galvanized iron is connected to each other via a goby B2. However, since this form is well known, detailed description thereof will be omitted and the drawings will be schematically shown. Manifest.

The reflector 1 is composed of a reflector main body 11 made of a thin stainless steel material, and a heat insulating material 12 attached to the entire rear surface of the main body. Further, the reflection plate 1 is bent at an upper portion and is inclined, and is formed to have a substantially V shape in FIG. The inclined upper part of the reflection plate 1 is a canopy for reducing the amount of snowfall due to snowfall in the eaves near area B1. Hereinafter, the inclined upper part will be referred to as a canopy and will be described with reference numeral 11A. Further, the lower part with respect to the upper part of the reflection plate 1 will be referred to as a lower reflection plate and will be described with reference numeral 11B. Reflector body 11 and heat insulating material 12
A frame 13 for reinforcement is interposed between them. Frame 1
3 is exposed from the lower ends of the reflector main body 1 and the heat insulating material 12, and a snow stopper plate 4 for preventing snowfall is provided on the exposed lower ends. Further, the lower end portion is pivotally supported by the support body 2.

The support 2 is a support rod 2 for supporting the reflector 1.
1 and the reflector 1 located between the reflector 1 and the support rod 21.
It is composed of a support plate 22 for supporting the stationary state and an angle changing means 3 formed between them.

The support rod 21 is made of an angle member and is positioned on the goby B2. A fixed body 21B for fixing to the goby B2 is provided below the horizontal surface portion 21A of the support rod 21. The fixed body 21B is fixed to the goby B2 by sandwiching the rising surface B21 of the goby B2 from the left and right and tightening the bolt / nut 21C through.

The support plate 22 is made of a flat plate material, and is disposed so as to stretch and support the reflection plate 1 across the reflection plate 1 and the face portion 21D of the support rod 21.

The angle changing means 3 (see FIGS. 4 to 6 for details).
Reference) A first pivotal support portion 3A that pivotally supports the reflection plate 1 with respect to the vertical surface portion 21D, and a second pivotal support portion that pivotally supports the support plate 22 with respect to the reflection plate 1. 3B,
The support plate 22 is pivotally supported on the vertical surface portion 21D, and is configured by a third pivotal support portion 3C that can change the pivotal support position.

As shown in FIG. 4, the first shaft supporting portion 3A is provided with a rotation supporting plate 31A at the lower end of the exposed portion of the frame body 1,
The rotation support plate 31A is configured to be pivotally supported by a bolt / nut 5 at the tip of the vertical surface portion 22D. Second shaft support 3B
As shown in FIG. 5, a rotation support plate 31B penetrating the lower reflection plate 11B is provided on the frame 13 located immediately below the bent portion of the reflection surface 1A, and the rotation support plate 31B is provided.
The upper end of the support plate 22 is pivotally supported by the bolts and nuts 5. As shown in FIG. 6, a plurality of third shaft supporting portions 3C are provided on the vertical surface portion 21D in the longitudinal direction (5 in the drawing).
Individual holes) 310 to 314, and the holes 310 to 31
The lower end of the support plate 22 is pivotally supported by a bolt / nut 5 in any one of the four (hole 312 in the drawing).

According to the angle changing means 3 having this structure,
The support of the support plate 22 is released by releasing the support of the third support 3C.
When it is moved along the longitudinal direction of 1, the first and second shaft support portions 3A and 3B are rotated with this movement, whereby the standing angle of the reflection plate 1 is changed to the irradiation surface of the reflection surface 1A. It is possible to change to the direction of approaching and separating from the eaves near area B1. The support plate 22 has holes 310 to 314.
Since it is pivotally supported by any of the above, the standing angle of the reflection plate 1 can be changed stepwise.

In the above-described embodiment, the third pivotal support portion 3C is illustrated as a mode in which the standing angle of the reflection plate 1 is changed stepwise, but in addition to this configuration, as shown in FIG. There is also a form in which the angle can be changed in stages. The form is that, instead of the holes 310 to 314, a long hole 315 along the longitudinal direction of the support rod 21 is opened, and the support plate 2 is provided in the long hole 315.
The lower end of 2 is pivotally supported. Since the angle changing operation loosens the shaft supporting force and moves the support plate 22 along the elongated hole 315, the angle can be changed steplessly. The configuration other than the third shaft support is the same as that in which the angle is changed stepwise, and the description thereof will be omitted. The configuration of the angle changing means 3 in the present invention is not limited to the one illustrated in the embodiment, but includes all that can change the standing angle of the reflection plate.

FIG. 8 schematically shows another form of the reflector 1. The installation on the roof and the angle changing means are shown in Fig. 1.
Since it is the same as that shown in FIG.
The reflection plate 1 of this embodiment is curved so that the reflection surface 1A side is a concave side. In the reflector 1 of this embodiment,
It is considered that the curved reflecting surface 1A can collect sunlight and generate stronger reflected heat.
Further, it is considered that the upper curved portion has the same effect as the above-mentioned eaves 11A. The reflector 1 of the present embodiment is curved with a uniform R from the upper end to the lower end, but the present invention is not limited to the curved form illustrated, and for example, only the eaves portion in the form shown in FIG. 1 is used. It also includes a curved shape, a shape in which only the lower reflection plate is curved, and a shape in which these are independently curved. (Not shown) For example, in the case where only the eaves portion is curved,
Although the part is farthest from the irradiated surface, it is considered that the snow melting action is improved due to the converging and reflecting effect of the sun rays due to the curvature. Further, in the case where only the lower reflection plate portion is curved, it is considered that the snow melting action is further improved by the converging and reflecting effect of the sun rays due to the bending. Further, in the case where the eaves portion and the lower reflection plate portion are curved so as to be independent from each other, both of the above-mentioned snow melting actions are provided.

The test results of the roof snow melting apparatus of the present invention will be shown below. The test method is a test piece in which a roof snow melting device is provided on one half of an iron plate that has the same structure and material as a snowless roof (called a device part), and the other half is not equipped with the device (called a non-device part) We irradiate the sun with sunlight on the snow, and compare the amount of snowmelt on the iron plate of the device part and the non-device part at this time. The conditions at the time of the test are as follows. Conditions: From January 29th to January 31st, 2001. From 12:00 pm to 12:00 pm the next day. Fine weather. About 75 mm of snow. (There is compaction. The goby is filled.)

1. The amount of snow around 29:30 on January 29th. (Outside air temperature -4 ° C) Equipment: Maximum snow accumulation of about 70 mm. Melting snow was observed from the eaves side, the iron plate surface was exposed to about 15 cm from the eaves tip, and most of the snowmelt water had evaporated. Non-equipment: Maximum snow accumulation of about 75 mm. No snowmelt is observed. 2. The amount of snow around 12:00 pm on January 30. (Outside air temperature 1 ° C) Equipment: Maximum snowfall of about 65 mm. The top of the goby begins to appear,
The exposed iron plate surface from the eave tip spreads further, the snowmelt water almost evaporated, and no falling water was observed. Non-equipment: Maximum snowfall is about 70 mm. Only the top of the goby can be confirmed. No snow melting at the eaves is observed. 3. The amount of snow on January 31st around 9:00 am. (Outside temperature −
10 ℃) Equipment: Maximum snow accumulation of about 55 mm. The upper surface of the goby appears clearly, the exposed iron plate surface from the eaves tip further spreads, the snow melting water almost evaporates, and no falling water is observed. Non-equipment: Maximum snowfall of about 65 mm. The top of the goby begins to appear. However, no snow melting at the eaves is observed. 4. The amount of snow on January 31, around 12:00 pm. (Outside air temperature 1 ° C) Equipment: Maximum snowfall of about 45 mm. The exposed iron plate surface from the eaves tip further spreads to about 30 cm, and almost all the snowmelt water evaporated and no falling water was observed. Non-equipment: Maximum snowfall of about 60 mm. The top of the goby appears slightly more clearly. However, no snow melting at the eaves is observed. The maximum temperature on the iron plate during the main test was 8 ° C. in the device part and 2 ° C. in the non-device part.

As is clear from the above test results, the irradiation by the reflection of the sun rays in the device section raises the temperature on the irradiated iron plate by a maximum of 6 ° C. as compared with the non-device section,
It was proved that the amount of snow melted for 48 hours was larger than that of the non-equipment part, moreover, complete snow melt was observed near the eaves, and almost no snow melt water on the iron plate surface was evaporated and no water fell. Therefore, it has been proved that the roof snow melting apparatus of the present invention has a high effect on the snow melting function.

[0024]

As described above, the present invention can efficiently perform snow melting even in the vicinity of the eaves on the north side where sunlight is hard to hit due to the reflected heat of sunlight reflected by natural energy. Further, the phenomenon that the snowmelt water evaporates due to the heating of the reflected heat to the roof surface can be expected, and hence the reduction of the falling water can be expected. Moreover, the snow melting is efficient, and the snow accumulated on the roof surface can be quickly melted, which can be expected to reduce the snow load. Therefore, it is possible to reduce the snow melting cost, reliably melt the snow near the eaves, store the snow melting water on the roof, and reduce the amount of water flowing down to the eaves. Can be reduced.

According to the second aspect of the present invention, by using stainless steel, the reflection efficiency of the reflecting surface, the durability and the impact resistance are extremely excellent.

According to the third aspect of the present invention, the heat of the sunlight is stored in the reflector by the heat insulating material, and the far-infrared radiation heat of the stored heat is used in addition to the reflected heat to evaporate the snowmelt and the snowmelt water. Can be made more efficient.

According to the invention of claim 4, by changing the standing angle of the reflecting plate, it is possible to always stand in a proper direction regardless of the angle of the sun, so that high reflecting efficiency is exhibited. It becomes possible. Therefore, high snow melting efficiency can be always maintained.

According to the fifth aspect of the present invention, it is possible to reduce the amount of snow on the surface to be illuminated, which shortens the snow melting time, reduces the amount of snow melting water, and efficiently heats the roof surface. Therefore, the snowfall can be immediately melted by the heat of the roof surface and the reflected heat applied to the surface to be irradiated.

According to the sixth aspect of the present invention, it is considered that sunlight rays can be condensed by the curved reflecting surface and stronger reflected heat can be generated, and the curved portion on the upper side of the irradiated surface It is possible to reduce snow cover.
Therefore, snow melting efficiency is improved and more rapid snow melting can be expected.

According to the sixth aspect of the present invention, the snow stop plate can prevent not only an unexpected snowfall, but also an ice block that is a phenomenon peculiar to a roof with a gentle slope, which causes a falling snowfall. It can reduce the inconvenience and danger to passersby.

[Brief description of drawings]

FIG. 1 is a side view of a roof snow melting device according to the present invention attached to a roof.

FIG. 2 is a sectional view taken along line (2)-(2) of FIG.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG.

FIG. 4 is an enlarged view of a main part of FIG.

FIG. 5 is an enlarged view of a main part of FIG.

6 is an enlarged view of a main part of FIG.

FIG. 7 is an enlarged view of a main part of another form of the angle changing device.

FIG. 8 is a side view showing another form of the reflection plate.

[Explanation of symbols]

A: Roof snow melting equipment B: Roof B1: Near eaves 1: Reflector 1A: reflective surface 11A: eaves 12: Heat insulating material 3: Angle changing means 4: Snow stop plate

Claims (7)

[Claims] Claim: What is claimed is: 1. A roof snow melting device comprising a reflector for reflecting sunlight and heating near the eaves, and melting snow near the eaves by the reflected heat of the reflector. 2. The roof snow melting apparatus according to claim 1, wherein the reflecting surface is made of stainless steel. 3. The roof snow melting apparatus according to claim 1 or 2, wherein a heat insulating material is provided on the back surface of the reflecting surface. 4. An angle changing means for adjusting the standing angle of the reflecting plate stepwise or steplessly in the direction in which the reflecting surface approaches and separates from the irradiated surface. 3. The roof snow melting apparatus according to any one of 3 above. 5. The roof snow melting device according to claim 1, wherein the upper side of the reflector is inclined toward the surface to be illuminated. 6. The roof snow melting device according to claim 1, wherein a part or all of the reflecting surface is curved. 7. The roof snow melting apparatus according to claim 1, further comprising a snow stopper plate provided at a lower end of the reflector plate.