JP3927201B2 - Electrothermal snow melting method and apparatus therefor - Google Patents

Description

  The present invention relates to an electrothermal snow melting method and apparatus for completely melting snow accumulated on a roof by snowfall using a thermoelectric element made of a semiconductor.

Snow eaves are generated at the eaves of the house due to the influence of wind and the like during snowfall in winter. Therefore, an electrothermal snow melting device (hereinafter referred to as a roof heater) has been introduced. For example, conventionally, an electromagnetic induction heating type roof heater or a technique of fixing a Teflon (registered trademark) covered heater capable of electrically energizing control on a roof material with an aluminum tube, as disclosed in Patent Document 1. In addition, as disclosed in Patent Document 2, a technique of inclining heating wires from the top of the roof toward the eaves has been proposed.
JP 2000-160876 A JP-A-6-42122

  However, the actual situation is that it is impossible to completely prevent the occurrence of snow leopards and icicles even in houses where roof heaters are introduced. In particular, in the electromagnetic induction heating type, a heater is installed in a valley portion on the back of the eaves, so that heat is not transmitted to the mountain portion, and a snowfall is easily generated. In addition, even if snow canopy can be prevented to some extent, the power consumption increases and the cost is increased. In addition, the installation of heating wires and the like depends on the shape of the roof, which makes installation difficult depending on the conditions. Furthermore, the conventional technology using a roof heater installed on the roof requires snow removal because the snow is not melted sufficiently, but the roof surface is damaged at that time, and the surface deteriorates due to rain, sunlight, etc. It had problems such as progress.

  Therefore, the present invention has been made in view of the conventional circumstances as described above, and can quickly and completely melt icicles and snow canopies with low power consumption, and irrespective of the shape of the roof surface. An object of the present invention is to provide an electrothermal snow melting method and apparatus that can be easily installed.

In order to solve the above-described problems, in the electrothermal snow melting method according to the present invention, the entire folded plate roof shape is disposed so as to be disposed on the roof of the folded plate roof structure in which the mountain portions and the valley portions are alternately arranged. An electrothermal snow-melting method using a snow-melting device formed on each of the semiconductor heat-exchange elements by bonding aluminum sheets to both sides of the non-conductive and heat-conductive protective material such as polyimide fiber. the formed flexible sheet-like heating element that heat conductively was affixed to the roof, the sheet-like heating element, from the outside, substantially the same shape as the sheet-like heating element, a thermal insulation material formed on university In addition, it is formed by bending a metal plate or a plastic plate into a folded plate roof shape so as to conform to the roof surface shape of the folded plate roof structure , which is also substantially the same shape and size as the sheet-like heating element. depending on the holding member, which is Wherein the fixed holding the roof surface.

Thus , a plurality of sheet-like heating elements having a predetermined length and width can be attached to the roof surface at a predetermined interval.
The sheet-like heating element and the heat insulating material can be bonded via a heat-resistant double-sided adhesive tape.
It can be tailed down below the eaves of the roof.

Further, in the electrothermal snow melting device according to the present invention, the whole is formed into a folded-plate roof shape so as to be disposed on the roof of the folded-plate roof structure in which mountain portions and valley portions are alternately connected. A snow melting device, a flexible sheet-like heating element using a semiconductor heat exchange element attached to the roof surface of the folded-plate roof structure so as to allow heat conduction, and the sheet-like heating element from the outside to the roof surface A holding member fixed and held via a heat insulating material, wherein the heat insulating material and the holding member are formed in substantially the same shape and size as the sheet-like heating element , and the holding member is a roof of the folded plate roof structure Constructed by bending a metal plate or plastic plate into a folded plate roof shape so as to conform to the surface shape, and the sheet-like heating element is a non-conductive and highly conductive protective material such as polyimide fiber On both sides of the semiconductor heat exchange element Characterized in that it is formed by bonding each Mishito.

Thus , a plurality of sheet-like heating elements having a predetermined length and width can be attached to the roof surface at a predetermined interval.
The sheet-like heating element and the heat insulating material can be bonded with a heat-resistant double-sided adhesive tape.
The lower part of the eaves of the roof can be bent to have a tail hanging part.

  In the electrothermal snow melting method and apparatus according to the present invention configured as described above, a flexible sheet heating element using a semiconductor heat exchange element efficiently transfers heat to the roof surface with low power consumption. In addition, the heat conduction to the eaves can be improved, the contact area with the roof surface is sufficiently large, and it can be bent and attached to fit the roof shape, so it can cope with the distortion of the roof surface. Let me. Moreover, since the combination of the flexible sheet-like heating element using the semiconductor heat exchange element and the holding member for fixing and holding the sheet-like heating element on the roof surface via a heat insulating material is set as one set, the front side of the roof surface Of course, it is possible to attach from the back side of the roof surface and to prevent the insulation from falling.

  According to the present invention, the sheet-like heating element is fixed and held on the roof surface, particularly the lower surface of the eaves by the holding member, so that the snow canopy and ice pillar can be melted instantaneously and completely with low power consumption. It can be installed regardless of the shape. For example, heat can be efficiently transmitted to the roof surface with low power consumption and heat conduction to the eaves can be performed well. In addition, the contact area with the roof surface can be made sufficiently large, and bending can be easily performed, so that it can be bent and attached freely according to the shape of the folded plate roof, and can also cope with distortion of the roof surface. . Further, since attachment from the back side of the roof surface is possible, maintenance such as durability and repainting of the roof becomes easy. In addition, the sheet-like heating element can be brought to the edge of the eaves, and icicles can be completely prevented.

  In particular, the sheet-like heating element is made by bonding aluminum sheets to both sides of the semiconductor heat exchange element via a non-conductive protective material such as polyimide fiber and having excellent thermal conductivity, so the entire roof surface is uniform. Heat generation, and temperature unevenness can be sufficiently suppressed. In addition, the set temperature and input voltage can be freely set according to the climate (temperature, amount of snowfall, etc.) of the installation site. That is, the set temperature can be lowered in a place where the amount of snowfall is warm and low, while the set temperature can be finely adjusted in a place where the amount of snowfall is cold, and wasteful power consumption can be suppressed. Further, the temperature does not continue to rise indefinitely as in the case of the conventional nichrome wire, and the temperature rise is faster than other heat sources such as the electromagnetic induction heating type and the nichrome wire. Furthermore, since the sheet-like heating element is formed in a thin sheet shape, it is easy to bend and can sufficiently cope with various types of folded-plate roofs. Furthermore, even if a part is damaged, there is little effect on the maintenance of the function. Therefore, unlike existing belt heaters, even if a part is damaged, there is no need for a complete replacement. In addition, the heat exchange rate of electric energy is about 93%, and there are various effects such as less power consumption than other materials.

  Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawing is an electrothermal snow melting device that melts snow on the roof P. Is formed in a folded-plate roof shape so as to be disposed on the back surface of the roof P of the folded-plate roof structure in which are alternately arranged. As shown in FIG. 1, the electrothermal snow melting device 1 includes a flexible sheet-like heating element 2 using a semiconductor heat exchange element attached to the back surface of the roof P so as to allow heat conduction, and the sheet-like heating element 2 as a heat insulating material. And a holding member 4 having a folded plate roof shape for fixing and holding on the back surface of the roof P via 3.

  As shown in FIG. 3, the sheet-like heating element 2 has sheet-like protective materials 2 </ b> B that are nonconductive and excellent in thermal conductivity, such as polyimide fibers, on both surfaces of the sheet-like semiconductor heat exchange element 2 </ b> A, respectively. The aluminum sheets 2C having good thermal conductivity are bonded to the both surfaces. And the heat insulating material 3 is adhere | attached on the lower surface of the sheet-like heat generating body 2 via the heat-resistant double-sided adhesive tape not shown.

  The holding member 4 is configured by bending a metal plate or a plastic plate into a folded plate roof shape so as to conform to the roof P surface shape of the folded plate roof structure. The holding member 4 made of a metal plate or a plastic plate has the sheet-like heating element 2 and the heat insulating material 3 sandwiched between the holding member 4 and the roof P back surface of the folded plate roof structure, and then the holding member 4 and the roof P back surface. Are fixed by, for example, fastening them with screws 5 and nuts 6 or attaching them to the back surface of the roof P with a fixing bracket (not shown).

  Moreover, as shown in FIG. 4, the roof P of the folded-plate roof structure is bent at the end to form a tail drooping portion 7, thereby improving drainage and generating icicles. It is intended to prevent this. Conventionally, the tail drooping portion 7 is provided at the eaves tip of the roof P. However, the tail drooping portion 7 can also be efficiently prevented from occurring in this portion by providing it at the water end.

Next, a method for assembling the electrothermal snow melting device 1 according to the present invention will be described.
First, the roof P is tailed to the lower side, the upper side, or both of the eaves. Moreover, the sheet-like heating element 2 is formed by bonding the aluminum sheets 2C to both surfaces of the semiconductor heat exchange element 2A through a protective material 2B that is non-conductive and excellent in thermal conductivity, such as polyimide fiber.

  Next, as shown in FIG. 1, the heat insulating material 3 is bonded to the flexible sheet-like heating element 2 using the semiconductor heat exchange element 2A via a heat-resistant double-sided adhesive tape (not shown). The sheet-like heating element 2 is attached to the back surface side of the root surface P so that the heat insulating material 3 faces downward so that heat conduction is possible, and a metal plate or a plastic plate is bent to match the folded roof shape. The holding member 4 thus formed is attached and disposed through the heat insulating material 3 and fastened and fixed by screws 5 and nuts 6. Instead of the screw 5 and the nut 6, the sheet-like heating element 2, the heat insulating material 3, and the holding member 4 may be fixed to the back surface side of the roof P via a fixing bracket (not shown).

Next, an installation method of the electrothermal snow melting device 1 according to the present invention will be described.
First, based on FIG. 5 (a), when describing the icicles outline of generation mechanism of snow S in sloping roofs P snow while being supported by struts 10, eaves P ₁ end of the roof P (water under in the side), ice heated by the heater H (conventional product) melts, icicles S ₁ is generated by re-frozen Refrigerated water that did not enter the eaves gutters 8.

On the other hand, at the upper end of the roof P (the water upper side), the melted ice is absorbed by the snow cover S, and the part freezes, and is blocked like a dam. S ₂ is generated.

Further, cornice S _3, as shown in FIG. 5 (b), "snow accretion wind", as a cause to "slip down snow" occurs at each end of the water under side and water side of the roof P To do.

In consideration of the above points, the prevention of icicle S _1, S _2, heating the end portion of the roof P, and it is important to improve the drainage, whereas, in the prevention of cornice S _3, the roof It is considered effective to suppress the snow accumulation S on P and melt snow only on the part that becomes a snow ridge.

Thus, in the embodiment shown in FIG. 6 , a plurality of (three in the present embodiment) sheet-like heating elements 2 having a predetermined length and width are arranged on the back surface of the roof P. At this time, the sheet-like heat generating element 2 on the basis of the mechanism, for example a sheet of narrow heating element 21 is disposed on the eaves P ₁ barely roof P inclined, a plurality of which are provided in the roof P thereabove Two wide heating elements 22A and 22B are disposed in parallel and close to each other across the rainwater outlet 9.

The number and size of the sheet-like heating elements 2 arranged with respect to the roof P are appropriately determined so that the best effect can be obtained in accordance with the size and shape of the roof P, the climate (temperature, amount of snowfall), etc. It is to be selected. Therefore, it is needless to say that the present invention is not limited to the above embodiment. Further, not only the eaves P ₁ roof P as in the illustrated example, can be located in the water-side end portion is as described above.

It is a disassembled perspective view which shows the best form for implementing this invention. It is a front view which similarly shows the electrothermal snow melting apparatus after an assembly | attachment. It is an expanded sectional view which shows the principal part after the assembly | attachment of a sheet-like heat generating body and a heat insulating material similarly. It is a fragmentary perspective view which shows the tail part provided in the roof edge part. (A) shows the state of the icicles generated on the roof, and (b) is an explanatory view showing the state of a snowfall. It is a top view which shows an example of the state which attached the electrothermal snow melting apparatus to the roof surface.

Explanation of symbols

P Roof P ₁ eaves edge S Snow cover S ₁ , S ₂ Ice pillar S ₃ Snow plow 1 Thermal snow melting device 2 Sheet heating element 2A Semiconductor heat exchange element 2B Protective material 2C Aluminum sheet 3 Insulating material 4 Holding member 5 Screw 6 Nut 7 Tail Section 8 Eaves 9 Rain water outlet 10 Post 21 Narrow heating element 22A, 22B Wide heating element H Heater

Claims (8)

An electrothermal snow-melting method using a snow-melting device formed entirely in a folded-plate roof shape so as to be disposed on a roof of a folded-plate roof structure in which peaks and valleys are alternately arranged , and non-conductive such as polyimide fiber After attaching a flexible sheet-like heating element formed by bonding aluminum sheets to both sides of the semiconductor heat exchange element via a protective material having excellent heat conductivity and adhering to the roof surface so that heat conduction is possible , the sheet-like heating element, from the outside, substantially the same shape as the sheet-like heating element, through the thermal insulation material formed on university, similarly formed substantially the same shape as the sheet-like heating element, the university, and the folding An electrothermal snow melting method characterized in that a metal plate or a plastic plate is fixed and held on a roof surface by a holding member formed by bending a metal plate or a plastic plate into a folded plate roof shape so as to conform to a roof surface shape of a plate roof structure . Predetermined length, a plurality of electrothermal melting snow method of claim 1, wherein the sheet-like heating element at a predetermined distance attached to the roof of the width. The electrothermal snow melting method according to claim 1 or 2, wherein the sheet-like heating element and the heat insulating material are bonded via a heat-resistant double-sided adhesive tape. The electrothermal snow melting method according to any one of claims 1 to 3 , wherein tailing is performed below the eaves of the roof. An electrothermal snow melting device formed entirely in a folded plate roof shape so as to be arranged on a folded plate roof structure roof in which mountain portions and valley portions are alternately arranged, and on the roof surface of the folded plate roof structure A flexible sheet-like heating element using a semiconductor heat exchange element attached so as to be thermally conductive, and a holding member for fixing and holding the sheet-like heating element from the outside to the roof surface via a heat insulating material The heat insulating material and the holding member are formed in substantially the same shape and the same size as the sheet-like heating element , and the holding member is a metal plate or plastic plate folded to fit the roof shape of the folded plate roof structure. The sheet-like heating element is formed by bending into a shape, and aluminum sheets are respectively provided on both sides of the semiconductor heat exchange element through a non-conductive and excellent thermal conductivity protective material such as polyimide fiber. Formed by bonding Electrothermal melting snow and wherein the.
6. The electrothermal snow melting device according to claim 5 , wherein a plurality of sheet-like heating elements having a predetermined length and width are attached to the roof surface at predetermined intervals. The electrothermal snow melting device according to claim 5 or 6, wherein the sheet-like heating element and the heat insulating material are bonded via a heat-resistant double-sided adhesive tape. The electrothermal snow melting device according to any one of claims 5 to 7 , wherein the lower part of the eaves of the roof is bent to have a tail hanging portion.

Images