JP2008050842A - Snow-melting drainboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow-melting drainboard which enables snow to be effectively melted throughout a drainboard-installed area subject to the melting of the snow. <P>SOLUTION: A heat-transfer cover 10, in which linear heating elements 1 etc. with at least a linear portion are annexed at intervals, comprises a recessed streak 11, and flange portions 12 and 12 which are protruded outward from an end of the recessed streak 11. In the heat-transfer cover 10, the linear heating element 1 is housed in the attitude of abutting on the inside surface of the recessed streak 11. Heat-transferrable beam materials 30 etc. are arranged in such a manner as to cross the heat-transfer covers 10 etc. , respectively. The snow-melting drainboard 100 is formed by having one side surface of the flange portion 12 positioned and fixed in the attitude of coming into surface contact with the beam material 30. The linear heating element 1 is arranged in a meandering shape viewed from above, and a curved portion at its end is housed in a separate heat-transfer cover 40 in the attitude of being lifted upward in a twisted state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a snowmelting saw that uses a linear heating element as its heat source, and more particularly, to a snowmelting saw that enables effective snowmelting in the entire snowmelting area where the snowmelt is installed.

  Conventionally, in order to melt snow on a building roof or the like, a snow melting device in which a heating element is disposed on a roof or the like as a support base and a heat sink such as aluminum is mounted on the heating element has been used. It has been. According to such a snow melting device, the heat generating element generates heat during snowfall, and the heat generated from the heat generating element is transmitted to the heat radiating plate, so that it is possible to melt the snow before it accumulates on the roof.

  As an example of the above-mentioned snow melting device, a flexible wire heating element is arranged on the roof surface so as to have a meandering shape consisting of a plurality of straight portions and curved portions, and a heat transfer cover (heat radiating plate) is installed on the straight portions. A snow melting device can be cited (see Patent Document 1). More specifically, a snow melting device is formed by providing perforated protrusions on both sides of a heat transfer cover having a rectangular cross section and connecting holes of adjacent heat transfer covers with a ring member. According to this snow melting device, since the heat transfer cover is rotatable by the ring member, the snow melting device can be compactly wound.

  As another conventional technique, Patent Document 2 discloses a snow melting device in which a linear heating element is covered with a heat transfer cover and two heat transfer covers are fixed by positioning plates, as in Patent Document 1. ing. The heat transfer cover also has a rectangular cross section.

JP-A-2005-273406 Registered Utility Model No. 3086327

  According to the snow melting device disclosed in Patent Literatures 1 and 2, it is possible to increase the efficiency of removing and transporting the snow melting device and installation work thereof. However, although snow can be melted immediately above or near the heat transfer cover, it is difficult to effectively melt snow accumulated between the heat transfer covers provided at intervals.

  The snow melting snowboard of the present invention has been made in view of the above-described problems, and can effectively melt the entire snow melting target area including snow accumulation between heat transfer covers provided at intervals. The purpose is to provide snow melting snow.

  In order to achieve the above object, a snow melting snow saw according to the present invention is provided with a linear heating element having at least a linear portion at an interval, and a flange protruding outward from an end of the groove. A heat transfer cover comprising a portion accommodates the linear heating element in a posture in contact with the inner side surface of the concave stripe, and a heat transfer beam material is disposed so as to intersect with each heat transfer cover. The flange portion is positioned and fixed in a posture in which the bottom surface of the flange portion is in surface contact with the beam member.

  The snow melting saw of the present invention is accommodated in the groove of the linear heat transfer cover with the linear heating element in contact with (in close contact with) the upper surface of the inner wall of the groove, and the heat transfer cover is spaced apart. Appropriate quantities are installed, and all heat transfer covers, for example, orthogonal heat transfer beam members, are also provided with appropriate quantities at intervals, and the heat transfer cover and beam members are positioned and fixed to each other. It is formed. A snowboard-shaped snow melting apparatus is comprised from the arrangement | positioning aspect of both a heat-transfer cover and a beam material.

  As an embodiment concerning the shape of the heat transfer cover, there is a form in which the cross section has a U-shaped or C-shaped concave strip and a flange portion that protrudes outward from both ends in the longitudinal direction. . The width of the flange portion (protruding length from the concave shape) may be the same on the left and right, may be different on the left and right, and further has a flange portion on only one of the left and right It may be. In addition, the substantial width of the flange portion is appropriately determined by the separation between the adjacent heat transfer covers, the heat transfer performance of the heat transfer cover and the beam material, etc. Is set so that the snow can be melted in a desired mode (for example, a mode in which snow is not substantially accumulated).

  In the snow melting snowboard of the present invention, the heat transfer beam material intersecting with the plurality of heat transfer covers and the flange portion of the heat transfer cover described above are fixed in a face contact state, so that heat transfer from the linear heating element. The heat transferred to the cover is effectively transferred to the beam material via the flange portion. Therefore, it is expected that the snow melting effect over the entire area of snow melting will be sufficiently expected by radiating heat to the gap between adjacent heat transfer covers as well as the vicinity of the heat transfer cover through the beam material. be able to.

  Here, the linear wire heating element is preferably formed from a flexible material, and should be soft enough to be wound up when removed from the roof top surface after being used as a snow melting device. More preferred. The material is not particularly limited, but a plurality of PTC elements (Positive Temperature Coefficient) serving as heat sources are arranged along the longitudinal direction of the wire heating element, and PTC elements are connected to both ends of these PTC elements. It is possible to apply a structure in which conductors for the purpose are arranged. Further, the PTC element and the conductor are preferably covered with an insulator made of a synthetic resin having flexibility. As such a PTC element, a resistor excellent in thermal conductivity, that is, a conductive polymer in which a particulate conductive agent such as carbon black is contained in a ceramic resistor or a polymer composition using barium titanate. Etc. can be used. When the temperature of the PTC element exceeds the Curie temperature, the resistance value increases rapidly, thereby reducing the amount of current, and as a result, the amount of heat generation can be reduced. Therefore, by using the PTC element, a stable thermal equilibrium state at a constant temperature can be maintained, and there is no need to incorporate a sensor, a controller, or the like for such temperature control.

  In addition, the material for both the heat transfer cover and the beam material is not particularly limited as long as it can transfer heat from the linear heating element, but considering the heat transfer performance and product cost, aluminum (A6062), stainless steel, iron and the like are preferable. Moreover, in order to improve the designability and durability, surface treatment such as painting or plating may be performed.

  In addition, the snow-melting saw of the present invention can be installed in an arbitrary target area by preparing a plurality of snow-melting saws of a predetermined size and arranging a plurality of snow-melting saws according to the size of the snow-melting area. Work is possible. Moreover, the snow melting snowboard of the present invention can be applied not only to the roof of a building but also to any target area where snow melting is necessary, such as a veranda or a front door. In particular, by using the above-mentioned materials for the heat transfer cover, it can be strong enough to withstand the weight of human beings, and it can be given slip resistance depending on the surface treatment. When finished, application to a veranda or a front door is suitable.

  Further, another embodiment of the snow melting according to the present invention is characterized in that the linear heating element is urged to the concave strip side by an urging member.

  For example, by providing an urging means for urging the linear heating element on the inner surface of the upper groove, it is possible to ensure contact (adhesion) between the linear heating element and the heat transfer cover. As this urging member, an elastic member such as a leaf spring body using an elastic deformation of a metal such as stainless steel or an appropriate cushion material (elastic body) can be applied. A synthetic resin foam such as polypropylene or silicon rubber can also be used.

  In addition, this preferred embodiment of the snow melting according to the present invention includes at least a linear heating element and a fitting body that fits with the heat transfer cover in a posture intersecting with the plurality of beam members. It is positioned and fixed, and a heat transfer cover is fitted to the fitting body.

  In the present invention, a plurality of beam members and a plurality of orthogonal fitting bodies, for example, are positioned and fixed at positions where the linear heating elements are to be disposed. A member is accommodated, and in this state, the snow melting snow is formed by fitting a heat transfer cover having a groove and a flange portion to the fitting body.

  Here, the fitting body can be formed from, for example, the same material as the heat transfer cover, and the shape thereof can be applied to a shape in which the cross-section is U-shaped and a fitting protrusion is formed from the side.

  When the fitting body and the heat transfer cover are fitted together, the flange of the heat transfer cover should be in surface contact with the beam material. There is no need for any connection means, and the manufacturing effort can be greatly simplified.

  Further, in this preferred embodiment of the snow melting according to the present invention, the ends of the adjacent linear heating elements are connected to each other via a curved linear heating element, and a continuous line in a meandering shape is obtained. The heat generating element is formed.

  In the present invention, the linear heating elements provided together are connected by a curved linear heating element so that the whole is continuous in a meandering shape, and at least the linear portion of the linear heating element is described above. A heat transfer cover is provided.

  The meandering linear heating element may be formed by a single linear heating element, or a plurality of linear linear heating elements and a separate curved linear heating element. The connection form may be an appropriate connection mode (a mode in which one is fitted to the other, a mode in which the other is connected through an appropriate joint member, or the like).

  In the present invention, as described above, by forming the linear heating element from a flexible material, it can be easily bent (constructed) into a curved shape.

  It should be noted that it is desirable to protect the curved linear heating element with an appropriate cover even at the end of the corner where the curved linear heating element is located. In addition, when this cover has heat transfer properties, the heat from the heat transfer cover described above (the heat transfer cover that accommodates the linear linear heating element) protects the curved linear heating element. Heat is transferred to the cover, and the snow melting effect at the end can be expected.

  Furthermore, in another embodiment of the snow melting according to the present invention, at least the curved linear heating element has a horizontally long flat cross section, and the upper surface of the horizontally long flat shape is on the curved inner side. The curved linear heating element is housed in the second heat transfer cover and is in contact with the inner surface of the heat transfer cover. is there.

  For example, in the case where a linear heating element that is continuous in a meandering shape is formed by a single linear heating element, the curved portion at the end thereof is twisted so that the upper surface of the horizontally long flat surface is on the inside of the curve. It has been proved by the inventors that the curved portion as a whole is lifted upward by setting it to the closed state. However, it goes without saying that the degree of lifting differs depending on the material of the linear heating element, the radius of curvature of the curved portion, and the like.

  In the present invention, the curved linear heating element lifted upward is accommodated by accommodating the curved portion at the end of the linear heating element with a separate heat transfer cover (second heat transfer cover). It can abut (adhere) the inner upper surface of the second heat transfer cover, and therefore, not only the linear portion of the linear heating element but also the curved portion of the end portion is interposed via the heat transfer cover. Effective snow melting is possible.

  For example, the second heat transfer cover has a U-shaped cross section and is formed in a size larger than the heat transfer cover that accommodates the linear portion of the linear heating element. An embodiment in which the curved portion of the heating element is accommodated and the end portion thereof is fitted to a plurality of heat transfer covers that accommodate the linear portion of the linear heating element or fixed with screws, bolts, etc. Applicable.

  As this use aspect of the snowmelt of the present invention, for example, by disposing the snowmelt in a posture in which the longitudinal direction of the beam material is directed to the gradient direction of the roof, the snowmelt water is inclined downstream through the gap between adjacent beam materials. It is possible to flow to the side, and there is no problem that snowmelt water accumulates on the roof or the accumulated snowmelt water freezes.

  As can be understood from the above description, according to the snow melting snow of the present invention, heat transfer is effectively performed to the beam member connecting the heat transfer covers from the flange portion of the heat transfer cover that accommodates the linear heating element. Therefore, it is possible to expect a sufficient snow melting action over this entire area of the snow melting.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of this embodiment of the snowmelt of the present invention, FIG. 2a is a view taken along the arrow IIa-IIa in FIG. 1, and FIG. 2b is a view taken along the arrow IIb-IIb in FIG. ing. FIG. 3 is a plan view showing a state in which the second heat transfer cover at the end of the plan view of FIG. 1 is removed, and FIG. It is a perspective view. FIGS. 5a, b, and c are cross-sectional views showing the form of the heat transfer cover, and FIG. 6 shows that the curved portion at the end of the linear heating element is twisted to lift the whole upward. FIG. 7 is a cross-sectional view illustrating a state in which the curved portion at the end of the linear heating element is accommodated in the heat transfer cover.

  FIG. 1 is a plan view of this embodiment of the snowmelt of the present invention, and FIGS. 2 and 3 are perspective views orthogonal to each other in FIG. The snow melting snowboard 100 is provided with a plurality of linear heat transfer covers 10, 10,... That accommodate a linear linear heating element (not shown), and a plurality of linear beam members 30. , 30, ... are positioned and fixed in a manner orthogonal to the heat transfer covers 10, 10, ..., and heat transfer covers 40, 40 are attached to both ends of the heat transfer covers 10, 10, .... Yes. The linear heating element passing through the heat transfer cover 10 is curved in the heat transfer cover 40 and leads to the adjacent heat transfer cover 10 (linear heating element 1 in FIG. 2), and the plan view thereof meanders. Arranged in a shape, one end communicates with the power cord 50a and the other end communicates with the power cord 50b.

  The specific shapes of the heat transfer covers 10 and 40 and the beam member 30 will be described with reference to other drawings. As the material, a material having excellent heat transfer performance such as aluminum (A6062), stainless steel, and iron can be selected.

  FIG. 3 is a plan view showing a state before the heat transfer cover 40 is attached in the plan view of FIG. 1. As shown in the drawing, one linear heating element 1 passing through the heat transfer cover 10 protrudes from the heat transfer cover 10 and is bent into a curved shape and disposed in the adjacent heat transfer cover 10. Are sequentially repeated to form a linear heating element having a meandering shape in plan view. In addition, the detailed description of the bending mode of the linear heating element bent in a curved shape will be described later.

  FIG. 4 is a cross-sectional view for explaining a specific configuration of the shape of the heat transfer cover 10 and a housing mode inside thereof.

  The heat transfer cover 10 has a U-shaped concave strip 11 whose cross-sectional shape perpendicular to the longitudinal direction is opened downward, and flange portions 12 and 12 projecting outward from the end side along the longitudinal direction of the concave strip 11. This shape is manufactured by bending a single plate material made of the above-described material. In addition, the cross-sectional shape of the groove 11 can select arbitrary shapes, such as C shape (curved shape) open | released below. The width (projection length) of the flange portion 12 is determined as appropriate depending on the separation between the adjacent heat transfer covers 10 and 10, the heat transfer performance of the heat transfer covers 10,. It is set so that the snow that has fallen in the space between the heat transfer covers 10 can be melted in a desired manner. For example, it is possible to manufacture a snow melting saw having a flange width of 9 to 18 mm and a spacing between adjacent flanges of about 2 to 12 mm.

  The beam member 30 is a hollow member having a rectangular cross section, the upper surface of which is in surface contact with the flange portion 12, and a desired rigidity. On the upper surface of the beam member 30, a heat conductive fitting body 20 is bonded or the like at a position where the linear heating element 1 is to be disposed. The fitting body 20 has a U-shaped cross section that opens upward, and a fitting protrusion 21 is provided on the outer side from the side.

  An elastic body 6 made of an appropriate material is bonded to the inner side surface (upper surface) of the fitting body 20, and the linear heating element 1 is temporarily fixed or adhesively fixed to the upper surface of the elastic body 6. Here, the elastic body 6 can be molded from an elastically deformable metal leaf spring, a synthetic resin foam such as polyethylene, polypropylene, or silicon rubber.

  The internal structure of the linear heating element 1 is provided with a PTC element 2 serving as a heat source at the center thereof, and conductors 3 and 3 are connected to the PTC element 2 via connection terminals 4 and 4 at both ends thereof. These are formed by covering them with an insulator 5 made of a flexible synthetic resin.

  On the inner side surface of the lower end of the concave strip 11 of the heat transfer cover 10, a projection 13 that fits with the projection 21 of the fitting body 20 is formed. In a state where the linear heating element 1 is temporarily fixed or adhesively fixed to the upper surface of the elastic body 6, the heat transfer cover 10 is covered from above so as to accommodate the linear heating element 1, and further pressed to form the protrusions 13, 21. They are fitted together, and the lower surface of the flange portion 12 is in surface contact with the upper surface of the beam member 30 as shown.

  Further, in a state where the heat transfer cover 10 and the fitting body 20 are fitted, the upper surface of the linear heating element 1 is in contact with the inner side surface of the concave strip 11, and heat is effectively applied to the heat transfer cover 10. To be communicated to. In the present embodiment, since the elastic body 6 biases the linear heating element 1 upward, the linear heating element 1 can reliably come into contact with the heat transfer cover 10 over the entire length thereof.

  The heat transmitted to the heat transfer cover 10 is effectively transmitted to the beam member 30 when the flange portion 12 is in surface contact with the beam member 30. Therefore, it is possible to expect an effective snow melting effect at the beam material portion between the heat transfer covers 10 and 10 and in the vicinity thereof.

  Further, as in the present embodiment, the linear heating elements 1,... Are accommodated in the fitting bodies 20,... Fixed to the beam members 30, and the heat transfer covers 10,. Since the assembly is completed easily, the assembly process (construction) can be simplified.

  As shown in FIGS. 4 and 5a, the left and right flange portions 12 and 12 projecting from the end of the concave strip 11 may have the same width, or as shown in FIG. 5b. And the widths may be different (the flange portions 12a and 12 of the heat transfer cover 10A). In some cases, as shown in FIG. 5c, the flange portion 12 may be provided only on one side (heat transfer cover 10B).

  FIG. 6 is a diagram showing that the curved portion at the end of the linear heating element 1 that is horizontally long and flat in a cross-sectional view is twisted from the arrangement in the heat transfer cover 10. More specifically, a state in which the upper surface in the disposition mode in the heat transfer cover 10 is twisted so as to be inside is shown. The inventors have confirmed that by twisting the linear heating element 1 in this way, the curved portion of the linear heating element 1 is lifted upward as shown in the figure (X direction in the figure). The degree of lifting varies depending on the material of the linear heating element 1 and the curvature of the curved portion, but it is sufficient that the lifting is at least the same level as the upper surface of the beam member 10.

  In this way, each curved portion at the end of the linear heating element 1 is twisted so that the upper surface in the arrangement mode in the heat transfer cover 10 is inside, and a separate heat transfer cover 40 is provided. FIG. 7 shows a cross-sectional view of the heat transfer cover 10 attached to the end of the heat transfer cover 10 while accommodating the curved portion.

  In the heat transfer cover 40, the heat transfer covers 10 and 40 are fitted by sandwiching the stay material 7 and the heat transfer cover 10 that support the end of the heat transfer cover 10 in the heat transfer cover 40 from both ends. A mounting bracket 8 is provided.

  Before the heat transfer covers 10 and 40 are fitted to each other, the heat transfer covers 10 and 40 are fitted to the curved portion of the linear heating element 1 that has been lifted upward as shown by a two-dot chain line in the figure. As a result, the upper surface of the curved portion and the inner upper surface of the heat transfer cover 40 come into contact with each other (P region in the figure).

  As a result of the heat transfer cover 40 and the curved portion of the linear heating element 1 coming into contact with each other, heat is effectively transferred to the heat transfer cover also at the end of the linear heating element 1. It is possible to obtain a high snow melting effect over the entire range of the snow melting mushroom 100.

  As an installation mode of the snow melting saw 100, for example, when the snow melting saw 100 is installed on the roof of a building, the snow melting saw 100 is installed so that the longitudinal direction of the beam member 30 is the gradient direction of the roof. There is no problem that the snowmelt water flows on the roof between the 30 snowmelt water flow paths.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

It is a top view of this one embodiment of the snow melting of this invention. (A) is the IIa-IIa arrow directional view of FIG. 1, (b) is the IIb-IIb arrow directional view of FIG. It is a top view of the state which removed the 2nd heat transfer cover of the edge part among the top views of FIG. It is the cross-sectional perspective view which showed the heat-transfer cover, its inside, and the fitting body in detail. (A), (b), (c) is sectional drawing which showed the form of the heat-transfer cover. It is the perspective view explaining that the curved part of the edge part of a linear heat generating body was lifted upwards by twisting. It is sectional drawing explaining the state in which the curved part of the edge part of a linear heat generating body is accommodated in the heat-transfer cover.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Linear heating element, 2 ... PTC element, 3 ... Conductor, 5 ... Insulator, 6 ... Elastic body, 10, 10A, 10B ... Heat-transfer cover, 11 ... Concave, 12 ... Flange part, 13 ... Protrusion, 20 ... fitting body, 21 ... projection, 30 ... beam material, 40 ... heat transfer cover, 100 ... snow melting snow

Claims (5)

  A linear heating element having at least a linear portion is provided at an interval, and a heat transfer cover comprising a recess and a flange portion protruding outward from the end of the recess is the linear heating element. In a posture in contact with the inner side surface of the concave stripe, heat transfer beam members are disposed so as to intersect with the respective heat transfer covers, and the bottom surface of the flange portion is attached to the beam members. Snow melting snow sword characterized by being positioned and fixed in a face-contacting posture.   The snow melting saw according to claim 1, wherein the linear heating element is urged toward the concave strip by an urging member.   A fitting body that accommodates at least the linear heating element and fits with the heat transfer cover is positioned and fixed to each beam member in a posture intersecting with the plurality of beam members, and the heat transfer cover is attached to the fitting body. The snowmelting mushroom according to claim 1 or 2, wherein the snowmelting mushroom is fitted.   The ends of the adjacent linear heating elements are connected to each other via a curved linear heating element, and a linear heating element that is continuous in a meandering shape in plan view is formed. Item 4. The snow melting snow sword according to any one of Items 1 to 3.   At least the curved linear heating element has a laterally flat cross section and is twisted so that the laterally flat upper surface is on the inside of the curved line. The snowmelting mushroom according to claim 4, wherein the heat-generating member is accommodated in the second heat transfer cover and is in contact with the inner surface of the heat transfer cover.

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