JP3629480B2 - Snow melting device for snow melting panel and metal roof surface eaves - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a snow melting panel and a snow melting device that melt a snow layer on a metal roof surface eaves portion and prevent generation of an ice bank and an ice column due to snow melting water.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 06-193309 and Japanese Patent Application Laid-Open No. 11-324245 disclose the use of a panel heater in the snow melting technique for the roof eaves. In both of these snow melting technologies, heat insulating material is provided on the lower surface of the sheet heating element and these are laid between the metal roof plate and the field plate, and the heat insulating material cooperates with the far-infrared ray generator to form the sheet heating element. Since it is not used as a wrapping material, it has low heat melting efficiency when it is laid on a metal roof surface in such a configuration, and it is exposed to disturbances such as wind and rain even during the snowy season, resulting in poor insulation. There are problems such as occurrence.
On the other hand, techniques using far-infrared rays for melting snow on the roof are disclosed in JP-A-11-083055 (the former) and JP-A-11-241304 (the latter). In the former technique, the radiator to which the heater is attached is a fired product obtained by mixing natural ore powder into natural ore or clay, so it is not flexible and used when bonded to the upper surface of the metal roof surface. Since it cannot conform to the upper surface and cannot follow the thermal deformation of the metal roof plate, the roof tile can only be laid on the roof tile. The latter technique radiates far infrared rays from the upper area of the snowfall surface of the roof to melt snow, and the far infrared ray generator has a cylindrical radiating portion and a spiral or coil-shaped electric device embedded in the radiating portion. Since it consists of a resistance heating wire, it differs from the technique of melting snow by laying a far infrared ray generator on a metal roof surface in a form of containing a sheet heating sheet.
[0003]
[Problems to be solved by the invention]
Therefore, the present invention is always laid on the top surface of the eaves portion of the metal roof surface, and an electrical insulation state is secured even when exposed to disturbances such as snow, rain and wind, and thermal radiation, and follows the thermal deformation of the metal roof plate. The present invention provides a snow melting panel and a snow melting device for melting a snow layer.
[0004]
In order to solve the above-mentioned problems, the present invention includes a sheet-like heat generating sheet sandwiched between upper and lower far-infrared ray generators obtained by degassing and drying a cement and a water-soluble synthetic resin mixed and applied to a substrate. The upper far infrared ray generator is provided with a joining plate for attachment to a metal roof plate at both end portions.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The planar heating sheet contained between the upper far-infrared generator and the lower far-infrared generator or between the upper far-infrared generator and the lower heat insulator is a flat area (width 150 mm × length 1010 mm), or a single piece or a plurality of sheets. As a bonding portion between the snow melting panel and the upper surface of the roof surface, a lower peripheral surface or / and an inner required surface are selected, and a glass fiber material or a cloth material is selected as a base material in the far infrared ray generator. In addition, the snow melting panels arranged on the horizontal roof metal roof surface are arranged in close contact on both sides, arranged with a space between each snow melting panel, the required number of close together groups They are arranged with a gap between them. The snow melting panels are arranged on the roof surface of the straw bars so that the width direction is kept between the straw bars, and the longitudinal direction is joined to the flow of the straw bars.
[0006]
【Example】
The present invention will be described with reference to an embodiment. As shown in FIG. 3, the snow melting panel a includes two left and right planar heating sheets 2 arranged with a required gap 1 at the center in the vertical direction, and the sheet 2. The upper far-infrared ray generator 3 that sandwiches from the upper part and the lower far-infrared ray generator 4 that sandwiches the lower part from the lower part. Each planar heating sheet 2 is a flat plate having a width of 150 mm × length of 1010 mm and a thickness of 0.8 mm, and a positive electrode 5 is provided on the upper surface of one end portion in the width direction along the longitudinal direction, and the upper surface of the other end portion is the same. -An electrode 6 is provided, and lead wires 7 and 8 are connected to the longitudinal ends of both electrodes 5 and 6, respectively. Both far-infrared ray generators 3 and 4 are composed of a flat area that can embed the sheet-like heat generating sheets 2 and 2 and can be adhered to the outer periphery of each of the outer edges by a water-tight adhesive through an adhesive margin. The applicant proposed in Japanese Patent Application No. 2000-264873, that is, a base material (which may be a glass fiber material) made of the cloth material 9 having the same area as the plane area was mixed with cement and a water-soluble synthetic resin. The mixture 10 is applied, degassed and dried, and finished to a thickness of 2 mm. The fabric material 9 is bonded to the sheet heating sheet 2 so as to face each other, and the lead wires 7 and 8 are It is watertight. Further, on the upper surface of the upper far-infrared ray generator 3, as shown in FIG. 4, a front joining plate 11 and a rear joining plate 12 protrude from both ends in the extending direction of the lead wires 7 and 8, respectively. Then, the rivets 13 are joined in a watertight manner. In place of the lower far-infrared ray generator 4, a snow melting panel (not shown) using a retractable lower heat insulator as a storage material is also provided.
[0007]
A snow melting device (hereinafter simply referred to as a snow melting device) A using the above-mentioned snow melting panel a will be described with reference to FIG. The lower surface of the body 4 is joined with an adhesive 15 at the front and rear required portions of both side ends and the center shown by the cross section of FIG. 2 and the phantom line of FIG. The rear joining plate 12 is bent and joined to the cable conduit 17 provided in front of the nose cover 16 at the front of the eaves, and then joined to the cable conduit 17. Lead cables 7 and 8 connected to the + electrode 5 and the − electrode 6 of the sheet heating sheet 2 of each snow melting panel a are connected to a cable 18 inserted and connected to a power source (not shown).
[0008]
The snow melting device A thus constructed has a required gap 20 between the respective snow melting panels a on the horizontal metal roof surface 19 shown in FIG. 5 so that the longitudinal direction follows the flow from the ridge side to the eaves side. Many are arranged.
[0009]
In the straw bar roof surface 21 shown in FIG. 6, the snow melting panel a is placed in the width direction between the respective straw bars 22, and joined along the longitudinal direction of the flow of the straw bars 22.
[0010]
The snow melting device A thus constructed is always laid on the top surface of the eaves portion of the metal roof surface 14, and when the snow is cold, the required snow layer is confirmed and turned on, and a controller (not shown) applies each snow melting panel a. On the other hand, the heat generation instruction is ordered, and the snow layer is melted efficiently by inducing the heat propagation to the inside of the snow layer by the far infrared ray generator and the resonance action of water molecules.
[0011]
【The invention's effect】
The far-infrared ray generator of the present invention is a flexible body because cement and a water-soluble synthetic resin body are applied to a base material of glass fiber material, and is a planar shape that embeds following thermal deformation of a metal roof plate. There is an effect of efficiently transmitting the heat generated by the heat generating sheet to the metal roof plate.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a snow melting device A for a metal roof surface eaves portion according to the present invention.
2 is an enlarged cross-sectional view of a snow melting panel a as viewed in the direction of arrows AA in FIG.
FIG. 3 is an explanatory diagram of a configuration excluding a front portion of a snow melting panel a.
FIG. 4 is a plan view of a snow melting panel a.
FIG. 5 is an explanatory diagram when a snow melting device A is provided on a horizontal metal roof surface.
FIG. 6 is an explanatory diagram of the arrangement of the snow melting panel a in the snow melting apparatus A provided on the roof surface of the straw bar.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crevice 2 Planar heat generating sheet 3 Upper far-infrared ray generator 4 Lower far-infrared ray generator 5 + Electrode 6-Electrode 7 Lead wire 8 Lead wire 9 Cloth material 10 Admixture 11 Front joining plate 12 Rear joining plate 13 Rivet DESCRIPTION OF SYMBOLS 14 Metal roof surface 15 Adhesive 16 Nasal concealment 17 Cable pipe body 18 Cable 19 Transverse metal roof surface 20 Crevice 21 Straw bar roof surface 22 Straw bar a Snow melting panel A Metal roof surface Snow melting apparatus of eaves part

Claims (1)

The sheet heating sheet with the lead wires connected to the electrodes extended is sandwiched between the upper and lower far-infrared generators, mixed with cement and water-soluble synthetic resin, applied to the substrate, and degassed and dried. A snow melting device for a snow melting panel and a metal roof surface eaves portion, which is encased and provided with a joining plate for attachment to a metal roof plate at both ends of the upper far infrared ray generator to follow the thermal deformation of the roof plate.

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