JP2009047332A - Groove structure for arranging water pipe in hot water mat for floor heating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a groove structure for arranging a water pipe in a hot water mat for floor heating capable of easily performing arrangement work of the water pipe, and more efficiently manufacturing the hot water mat. <P>SOLUTION: This groove structure is a structure of grooves 3 of the hot water mat for floor heating, constituted by inserting the water pipe as a hot water circulation passage, into at least a set of continuous grooves 3 formed on a surface of a thin plate-shaped resin foam molding 1. The groove 3 includes linear portions and curved portions in a plane view, and has a groove width (W<SB>0</SB>) of a size corresponding to 97-103% of an outer diameter (D) of the water pipe. The linear portions and the curved portions of the groove 3 are provided with throttle portions 31 of a groove width (W<SB>1</SB>) corresponding to 70-90% of the groove width (W<SB>0</SB>). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a groove structure for water pipe arrangement in a warm water mat for floor heating, and more specifically, warm water circulation on the surface of a sheet-like foamed resin molded body in a warm water mat for floor heating laid as a flooring floor. The present invention relates to a groove structure for water pipe arrangement for arranging a water pipe as a road.

  In the floor heating construction, a floor heating hot water mat in which a water pipe as a hot water circulation path is arranged on the front side of a thin plate-like foamed resin molded body as a heat insulating material is used as a base for floor finishing materials such as flooring. . Such a hot water mat is known as, for example, a “floor heating mat”, and has a sheet-like foamed resin molded body (mat plate) provided with a groove for water pipe arrangement on the front side, and a groove on the surface of the foamed resin molded body. And a heat radiating sheet (metal foil) for heat diffusion adhered to the surface of the foamed resin molded body, circulating hot water supplied from the boiler to the water pipe, Heat of warm water is supplied to the living room side through a heat dissipation sheet (Patent Document 1).

  In the hot water mat described above, in order to dissipate heat substantially evenly, the water pipes are arranged in a predetermined circulation pattern in which a straight portion and a curved portion are combined in a plan view. Inserting a water pipe by a moving body that moves relative to the groove on the surface of the resin molded body, and heating the water pipe at that time to remove the curl, the groove is efficiently Techniques relating to an automatic device in which a water pipe is arranged have also been proposed (Patent Documents 2 and 3).

JP 2006-226604 A Japanese Patent No. 3723814 Japanese Patent No. 3723815

  By the way, in the manufacture of the hot water mat as described above, when inserting the water pipe into the groove on the surface of the foamed resin molded body, the water pipe is constituted by either a manual method or a method using an automatic device. Since the bending stress of the resin is strong and the water pipe once stored in the groove rises from the groove due to its restoring force, the heat pipe's heat dissipation sheet sticking method is devised to prevent the water pipe from lifting, etc. Requires considerable skill in placement.

  In view of the above circumstances, the present invention has been made as a result of various studies on the basic structure of a hot water mat. The purpose of the present invention is to make the arrangement of water pipes extremely easy and to produce the hot water mat more efficiently. An object of the present invention is to provide a groove structure for arranging a water pipe in a hot water mat for floor heating.

  In order to solve the above-described problems, in the present invention, a narrowing of a specific groove width smaller than the outer diameter of the water pipe is made with respect to a groove formed by combining a linear portion and a curved portion on the surface of the foamed resin molded body. When the water pipe is inserted, the throttle part is elastically deformed, and its restoring force regulates the stress deformation of the water pipe so as to prevent lifting.

That is, the gist of the present invention is that hot water for floor heating is formed by inserting a water pipe as a hot water circulation path into at least one set of continuous grooves formed on the surface of a thin plate-like foamed resin molding as a heat insulating material. The groove structure of the mat includes a groove width (W including a straight portion and a curved portion in a plan view, and having a size corresponding to 97 to 103% of the outer diameter (D) of the water pipe. ₀ ), and a straight portion and a curved portion of the groove are provided with a narrowed portion having a groove width (W ₁ ) corresponding to 75 to 90% of the groove width (W ₀ ). It exists in the groove structure for water pipe arrangement | positioning in the hot-water mat for floor heating characterized.

  According to the groove structure of the present invention, the throttle part having a specific groove width is provided in the linear part and the curved part of the groove, and when the water pipe is inserted, the water pipe can be prevented from being lifted by the throttle part. The arrangement work of the water pipe is very easy, and the hot water mat can be manufactured more efficiently.

  DESCRIPTION OF EMBODIMENTS An embodiment of a groove structure for arranging a water pipe in a hot water mat for floor heating according to the present invention (hereinafter abbreviated as “groove structure”) will be described with reference to the drawings. FIG. 1 is a plan view showing the shape of the narrowed portion in the groove structure of the present invention, the groove width of the normal portion, and the groove width of the narrowed portion, and longitudinal sectional views along the lines AA and BB. FIG. 2 is a longitudinal sectional view showing the relationship between the groove width of the throttle portion in FIG. 1 and the outer diameter of the water pipe and the action when the water pipe is inserted into the throttle portion. FIG. 3 is a partial plan view of the surface of the foamed resin molded body showing the arrangement of the narrowed portions along the continuous direction of the grooves. FIG. 4 is a partially cutaway perspective view showing the structure of the hot water mat for floor heating, and FIG. 5 is a plan view showing an arrangement example of water pipes in the hot water mat for floor heating. The following description is a representative example of the present invention, and the present invention is not limited to these contents.

  First, an overall structure of an example of a warm water mat for floor heating (hereinafter referred to as “hot water mat”) will be described. As shown in FIG. 4, the hot water mat has at least one set of continuous grooves (3) formed on the surface of a thin plate-like foamed resin molded body (1) as a heat insulating material. (4) is inserted and configured. And in order to construct | assemble a floor heating system, it lays on the floor foundations which consist of structural plywoods, such as a veneer, particle boards, or concrete slabs, as a foundation | substrate of floor finishing materials, such as a flooring.

  Specifically, as shown in FIG. 5, the hot water mat is usually formed in a square (square or rectangular) planar shape from the viewpoint of workability. The hot water mat can be designed in various sizes in consideration of the installation location. However, in order to correspond to the dimension design of the living room floor, the length (width) of one side is usually about 500 to 4000 mm, and the length of the other side. The length (length) is designed to be about 500 to 4000 mm and the thickness is about 7 to 20 mm.

  The foamed resin molded body (1) is configured by arranging a large number of small pieces, for example, whose planar shape is formed into an elongated rectangle. Small pieces constituting the foamed resin molded body (1) are rigid polyurethane foam, rigid polyethylene foam, rigid polypropylene foam, polystyrene foam, phenol resin foam, rigid polyvinyl chloride foam, polymethyl methacrylate foam, It consists of a polycarbonate foam, a polyphenylene oxide foam, a foam of a mixture of polystyrene and polyethylene, and the like. In addition, the foamed resin molded body (1) may be divided in order to configure the hot water mat in a folded structure. Moreover, the nonwoven fabric etc. may be stuck as a sound-insulating material on the back surface of the foamed resin molded body (1). Further, in order to reduce the cost, it is parallel to the length direction of the joist member (2) described later. A concave groove may be provided.

  As shown in FIGS. 4 and 5, the foamed resin molded body (1) is usually provided with joist-like members (2) at predetermined intervals in parallel with the width of the hot water mat. The joist member (2) is a small member for supporting a vertical load applied from above, and is made of wood such as cedar, cherry, cypress, lauan and plywood, or a hard foam material of resin. . The joist-like member (2) is used for fixing a flooring laid on the upper surface with a nail or an adhesive and fixing the hot water mat using a screw or a nail on a floor base. The length and thickness of the joist member (2) are each designed according to the above-mentioned width and thickness of the hot water mat, and the joist member (2) has a width of about 40 to 50 mm from the viewpoint of workability. It is said.

  As shown in FIG. 4, the water pipe (4) is disposed in contact with a heat-dissipating sheet (5) described later with respect to a groove (3) formed on the surface of the foamed resin molded body (1) when it is molded. Is done. As the water flow pipe (4), a resin pipe such as a crosslinked polyethylene pipe, a polybutene pipe, a polypropylene pipe, or a polyethylene pipe is used. Generally, a crosslinked polyethylene pipe or a polybutene pipe is used. The size of the water pipe (4) is such that the outer diameter is usually 4 to 10 mm, preferably 5 to 8 mm, and the inner diameter is usually 4 in order to reduce the pressure loss of the flowing hot water and maintain the average temperature at a higher temperature. -7 mm, preferably 5-6 mm.

  Further, as shown in FIG. 5, at one edge of the hot water mat (the lower edge of the lower left corner in FIG. 5), the foamed resin molded body (1) is provided with a cut shape, and the header mounting portion (6) is provided. The water pipe (4) is connected to a header (fluid branch block) (not shown) for hot water distribution and recovery attached to the header attaching portion (6), and a plurality of systems (multiple circuits), For example, four circulation paths as shown in the figure are configured. As described above, by configuring a plurality of circulation paths, it is possible to reduce the temperature drop of the hot water in each system, dissipate heat uniformly over the entire panel, and increase the output.

The water pipe (4) is, for example, arranged linearly along the width direction of the hot water mat and arranged so as to be folded back at both ends in the width direction, that is, at the edge portions along the length direction of the hot water mat. In other words, the water pipe (4) forms a plurality of circulation paths that circulate substantially the entire surface of the hot water mat in a predetermined pattern by a combination of a plurality of straight portions and curved portions arranged in parallel. Warm water mat to secure the width of the joist-like member (2) sufficiently to improve the workability, and to secure the laying length of the water pipe (4) to increase the heat radiation per unit area. The total laying length of the water pipe (4) per unit area is about 15 to 30 m / m ² , preferably 19 to 27 m / m ^2, and the arrangement pitch of the water pipes (4) is usually The thickness is set to 55 to 90 mm on both sides of the joist member (2) and 30 to 55 mm on portions other than both sides of the joist member (12). From the relationship of increasing the output, the total length of the water pipe (4) constituting one circulation path is usually 3 to 40 m, preferably 10 to 35 m.

  Further, although not shown in the drawings, in a preferred embodiment of the hot water mat, in order to increase the output to the upper surface side and increase the heat radiation efficiency to the upper surface side, at least a part of the water pipe (4), for example, the straight portion, And a water pipe (4) of the foamed resin molded body (1) is accommodated in a bowl-shaped metal heat transfer member having a U-shaped cross section perpendicular to It arrange | positions with a heat-transfer member in the aperture | diaphragm | squeeze part (31) formed in the front side. The heat transfer member is made of an aluminum (or aluminum alloy) foil having a thickness of about 10 to 500 μm, preferably 50 to 150 μm. When the heat transfer member as described above is arranged, the heat released from the water flow pipe (4) can be efficiently transmitted to the heat radiating sheet (5), and the heat radiation efficiency to the upper surface side of the hot water mat can be improved. .

  As shown in FIG. 4, on the front side surfaces of the foamed resin molded body (1) and the joist-like member (2), that is, on the upper surface of the hot water mat, heat dissipation that transfers the heat of the hot water in the water flow pipe (4) to the flooring side. A sheet (5) is arranged. The heat radiation sheet (5) is a flexible film or sheet having a thickness of usually 10 μm to 200 μm, preferably 30 μm to 100 μm and excellent in thermal conductivity, such as aluminum foil, tin foil, copper foil, stainless steel foil. It is comprised by metal foil, such as these, metal woven fabrics and nonwoven fabrics, a resin film or a resin sheet, or a laminated sheet combining these. The heat radiating sheet (5) is adhered to the surface of the foamed resin molded body (1) and the joist member (2) with an adhesive, an adhesive film or the like.

  Next, the groove structure for arranging the water pipes in the hot water mat as described above will be described. The groove (3) of the hot water mat is provided in the foamed resin molded body (1) according to the arrangement of the water pipe (4). That is, the groove (3) includes a straight portion and a curved portion in plan view, and at least one set is continuously formed on the surface of the foamed resin molded body (1) in a predetermined circulation pattern, and the groove (3) ) Is inserted into a state in which a water pipe (4) as a hot water circulation path is partially exposed (a state in contact with a heat radiation sheet (5) stretched on the upper surface).

FIG. 3 shows a foamed resin molded body (1) of a part of the hot water mat shown in FIG. 5 (the upper left corner in FIG. 5). For example, as shown in FIG. A straight portion and a curved portion are provided in plan view. And a groove | channel (3) is formed in the width | variety which can insert a water pipe (4) without resistance, and can fit a water pipe (4) without a clearance gap. Specifically, as shown in FIGS. 1A and 1C, the groove width (W ₀ ) of the normal portion of the groove (3) is the outer diameter (D) of the water pipe (4) (see FIG. 2). ) And a size equivalent to 97 to 103% of the outer diameter (D) of the water pipe (4). For example, the groove width (W ₀ ) of the groove (3) is set to 7.2 mm, which is equivalent to the outer diameter (D) of the water pipe (4).

  In this invention, when arrange | positioning a water pipe (4) along a groove | channel (3), in order to control the floating by the bending stress of the said water pipe, as shown in FIG. The curved portion is provided with a narrowed portion (31) in which the groove is narrowly formed. Thereby, in this invention, when a water flow pipe (4) is inserted in a groove | channel (3), a throttle part (31) is elastically deformed in the direction which a width expands, and a water flow pipe (4) is restrained with the restoring force. The water pipe (4) can be stored inside the groove (3).

Specifically, as shown in FIG. 1 (c), the shape of the groove (3) is usually a U-shape whose bottom surface is arcuate when viewed in a cross section perpendicular to the continuous direction of the groove (3). The same cross-sectional shape of the narrowed portion (31) is formed in a similar U shape having a narrower width than the normal portion of the groove (3). Further, the shape (planar shape) of the diaphragm portion (31) in plan view is an isosceles triangle shape or a trapezoid shape that gently protrudes toward the center of the groove (3) as shown in FIG. In other words, the hypotenuse portion is formed in the above-described shape bulging at an angle of 3 to 10 degrees with respect to the side wall of the groove (3). The length (X) of the narrowed portion (31) along the continuous direction of the groove (3) is set to 1.5 to 3.7 times the groove width (W ₀ ). By forming the throttle part (31) in the shape and length as described above, when the water pipe (4) is inserted into the groove (3), the throttle part (31) and its surrounding resin are damaged. The diaphragm portion can be elastically deformed.

As shown in FIGS. 1 (a) and 1 (b), the groove width (W ₁ ) of the narrowed portion (31) is 75 to 90% of the groove width (W ₀ ) of the normal portion of the groove (3). The corresponding size is set, preferably the size corresponding to 80 to 85%. For example, when the groove width (W ₀ ) is 7.2 mm, the groove width (W ₁ ) of the narrowed portion (31) is set to 5.4 to 6.5 mm, preferably 5.8 to 6.1 mm.

The reason why the groove width (W ₁ ) of the narrowed portion (31) is set in the above range is as follows. That is, when the groove width (W ₁ ) of the throttle part (31) is less than 75% of the groove width (W ₀ ) of the normal part, it is difficult to insert the water pipe (4) into the groove (3). When the water pipe (4) is inserted, the repelling force of the resin constituting the groove (3) becomes too large, and the water pipe (4) may be pushed out. On the other hand, when the groove width (W ₁ ) of the throttle part (31) exceeds 90% of the groove width (W ₀ ) of the normal part, a restraining force sufficient to counter the bending stress of the water pipe (4) is applied. It cannot be fully demonstrated, and the floating phenomenon of the water pipe (4) cannot be suppressed.

Further, as shown in FIG. 3, the narrowed portion (31) has a groove width (W) of 4 to 8 times the groove width (W ₀ ) in the linear portion of the groove (3) and the curved portion of the groove (3). ₀ ) is provided along the continuous direction of the groove (3) at intervals (L1) and (L2) corresponding to 2 to 4 times. Specifically, for example, when the groove width (W ₀ ) is 7.2 mm, in the linear part of the groove (3), the interval (L ₁ ) for arranging the throttle part (31) is 29 to 58 mm, and the groove In the curved part (3) (the upper bent part in FIG. 3), the interval (L ₂ ) for arranging the throttle part (31) is 15 to 29 mm.

  The reason why the arrangement intervals (L1) and (L2) of the aperture section (31) are defined as described above is as follows. In other words, the effect of fixing the water pipe (4) is improved by providing more throttle parts (31), but the number of the water pipes (4) to the grooves (3) increases as the number of throttle parts (31) increases. The insertion speed (working speed) decreases, causing a reduction in manufacturing efficiency. In addition, since the stress generated in the water pipe when the water pipe (4) is inserted into the groove (3) is larger in the curved part than in the straight part of the water pipe (4), the throttle part (31) is also in the groove. It is necessary to arrange the curved portion (3) at a narrower pitch than the straight portion. Therefore, without reducing the efficiency of the arrangement work of the water pipe (4) at the time of hot water mat production, and as the arrangement interval of the throttle part (31) that can demonstrate the necessary binding force to the water pipe (4), The intervals (L1) and (L2) are set in the above range.

  The above-mentioned hot water mat is formed by combining the small pieces of the foamed resin molded body (1) to form a mat shape and disposing the joist-like member (2) as necessary, and then grooves on the surface of the foamed resin molded body (1). The water pipe (4) is disposed on (3), and then the heat radiating sheet (5) is adhered to the upper surfaces of the foamed resin molded body (1) and the joist member (2) to cover the water pipe (4). It is manufactured by.

In the groove structure of the present invention, with respect to the groove (3) formed by combining the straight portion and the curved portion on the surface of the foamed resin molded body (1), the groove width (W ₀ ) of the normal portion of the groove. 2 is provided with a narrowed portion (31) having a specific groove width (W ₁ ) smaller than the outer diameter (D) of the water pipe (4). As shown, when the water pipe (4) is inserted into the groove (3) along the groove (3) at the time of manufacturing the hot water mat as described above, the throttle part (31) is elastically deformed, and the water pipe is caused by its restoring force. (4) is restrained and the stress deformation of the water flow pipe (4) is restricted. As a result, the water pipe can be prevented from rising when the water pipe (4) is inserted. Therefore, according to this invention, the arrangement | positioning operation | work of a water pipe (4) is very easy, and a warm water mat can be manufactured still more efficiently.

  The present invention is not limited to the hot water mat having the structure described above, and can be applied to various hot water mats for floor heating in which a water pipe as a hot water circulation path is inserted into a groove on the surface of a thin plate-like foamed resin molded body.

FIG. 6 is a plan view showing the shape of the narrowed portion in the groove structure of the present invention, the groove width of the normal portion, and the groove width of the narrowed portion, and each longitudinal sectional view along the lines AA and BB. It is a longitudinal cross-sectional view which shows the effect | action at the time of water pipe insertion in the relationship between the groove width of the throttle part of FIG. 1, and the outer diameter of a water pipe. It is a partial top view of the surface of the foaming resin molding which shows arrangement | positioning of the narrowing part along the continuous direction of a groove | channel. It is a perspective view which fractures | ruptures and shows the structure of the warm water mat for floor heating partially. It is a top view which shows the example of arrangement | positioning of the water flow pipe in the warm water mat for floor heating.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Foamed resin molded object 2: joist-like member 3: groove 4: water pipe 5: heat radiating sheet 6: header attachment part 31: throttle part D: outer diameter of water pipe L ₁ : arrangement distance of throttle part in linear part L ₂ : Arrangement interval of the narrowed portions in the curved portion W ₀ : Groove width W ₁ : Groove width of the narrowed portion X: Length of the narrowed portion

Claims (3)

The structure of the groove in a hot water mat for floor heating, in which a water pipe as a hot water circulation path is inserted into a groove formed on the surface of a thin plate-like foamed resin molded body as a heat insulating material, the groove being a flat surface As viewed, the straight portion and the curved portion are formed to have a groove width (W ₀ ) including a straight portion and a curved portion and corresponding to 97 to 103% of the outer diameter (D) of the water pipe. The groove is provided with a throttle portion having a groove width (W ₁ ) corresponding to 75 to 90% of the groove width (W ₀ ). Construction. The narrowed portion is a continuous direction of the groove at intervals (L1) and (L2) corresponding to 4 to 8 times the groove width (W ₀ ) in the linear portion and 2 to 4 times the groove width (W ₀ ) in the curved portion, respectively. The groove structure according to claim 1, wherein the groove structure is provided along the line. The groove structure according to claim 1 or 2, wherein the length (X) of the narrowed portion along the groove continuous direction is set to 1.5 to 3.7 times the groove width (W ₀ ).

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