JP2005241101A - Floor heating panel and heat insulating block used in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight floor heating panel of a simple constitution capable of radiating far infrared ray by using the heat of a hot water pipe and a heat plate, and ensuring better health with safety and cleanness. <P>SOLUTION: This floor heating panel is manufactured by successively fixing an upper plate composed of a front surface layer and a rear surface layer mainly composed of polyvinyl chloride and calcium carbonate, and an intermediate layer between the front surface layer and the rear surface layer, mainly composed of polyvinyl chloride and calcium carbonate, and including at least 20 % of granite porphyry, the heat plate for a curved pipe, having a heat plate for a straight pipe, composed of thin galvanized steel plate and having a piping groove part extended straight to an intermediate lower part of approximately rectangular left and right flat parts, and circular arc-shaped piping groove parts formed on orthogonal two side lower parts of an approximately square-shaped flat part, the hot water pipe made out of cross-linked polymer and having the combination of the straight part and the circular arc part, having the circular cross-section, the heat insulating block composed of a molding of hard plastic and having a projection part projected from an upper face of the flat base part, and a thin heat-insulating reflection plate formed by adhering metal foil to a surface of a heat insulating base material, from its upper face. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement in a floor heating panel for heating a room by circulating hot water under the floor and a heat insulation block used therefor.

  A conventional floor heating panel consists of a hot water pipe embedded in a piping groove provided on the main board, and an aluminum hot plate laid on the upper surface of the main board. Flooring, tatami or carpet as a finishing material on the upper surface of the hot plate Etc. are laid.

For example, the following patent document describes the configuration of the hot plate as a hot plate.
JP 2003-130373 A

The heat of the hot water pipe and hot plate of the conventional floor heating panel simply warms the finishing material, and the substrate on which the hot water pipe is embedded has a simple configuration and can flexibly meet various customer requirements for the hot water pipe. It is not considered to respond to.
On the other hand, an object of the present invention is to obtain a floor heating panel that can radiate far-infrared rays using the heat of a hot water pipe and a hot plate, is safe, clean, promotes health, has a simple structure, and is lightweight.
It is another object of the present invention to obtain a heat insulation block used for a floor heating panel that can flexibly cope with room heating conditions required by various customers.

to this end,
In the first aspect of the invention, polyvinyl chloride and calcium carbonate are the main components between the front and back layers and the front and back layers in which polyvinyl chloride and calcium carbonate are the main components from the upper surface and a mixture is mixed therewith. In addition, a flat plate upper plate that is compression-molded with an intermediate layer mixed with at least 20% barley stone and a mixture, etc., and a straight rectangular shape in the middle of the left and right flat parts made of thin zinc coated steel plate A straight pipe hot plate having a pipe groove extending in a straight line, a curved pipe hot plate having an arcuate pipe groove below two orthogonal sides of the substantially rectangular flat portion, and a straight section and a circular arc portion made of a crosslinked polymer and having a circular cross section A warm water pipe, a heat insulating block having a projection that protrudes from the upper surface of the flat base with a hard plastic molded body, and a thin heat insulating reflector with a metal foil attached to the surface of the heat insulating base material. Sequential sticking Was solved by the base and the floor heating panel the hot water pipe to the straight and arcuate pipe grooves was pressed into the straight and curved pipe path formed in a concave shape was allowed accommodated and held from above by the projecting portion.
In the invention of claim 2, in the floor heating panel according to claim 1, the base part of the heat insulation block is formed in a substantially square shape, and is formed in a corner part of each projection part, and is a substantially right-angled isosceles triangle having a small groove part. A block connector having a substantially square substrate that can be fitted to the seat portion and a small protrusion that can be fitted to the small groove portion, wherein the heat retaining blocks are arranged in units of four, and the heat retaining block is arranged at the central portion. The floor heating panels can be connected to each other.
In the invention of claim 3, in the piping groove portion of the straight plate hot plate, a narrow inlet is formed linearly on the upper surface side of the flat portion, and the straight portion of the hot water pipe is press-fitted from the inlet, In the piping groove part of the hot plate, a narrow entrance is formed in an arc shape on the upper surface side of the flat part, the arc part of the hot water pipe is press-fitted from the entrance, and the hot water pipe can be stored and held in each piping groove part. The floor heating panel according to claim 2 or 3 is preferable.
In the invention of claim 4, a) a base portion (51) of a substantially square flat plate shape made of a hard plastic, and b) a hypotenuse with a hypotenuse at a position adjacent to the center (o ₁ ) of the base portion (51). isosceles right triangle four pieces formed in an arc shape (a ₁₎ and said central (o ₁₎ from the distant position 4 places symmetry center (o ₂₎ the small pieces to (a ₁₎ and the same four pieces (A ₂ ) is disposed, and the small pieces (a ₁ , a ₂ ) facing each other are surrounded by arc-shaped side walls having a radius (r) from the center (o ₁ , o ₂ ) between the arc-shaped oblique sides of the small pieces (a ₁ , a ₂ ). Four pieces (b) are arranged at symmetrical positions, and have a center (o ₃ ) as a center (o ₃ ) and a radius (r ₃ ) at the left and right and vertical straight lines passing through the center (o ₁ ) and the base (51) edge. ) In the middle of the semicircular arc-shaped side wall, four sets of end pieces (c) spaced apart by straight side walls are arranged vertically and horizontally, and the base (5 Corner pieces d forming a quarter arcuate side walls of four corners of the center (o ₄₎ and to the radius (r) of) are four arrangement, protrusions wherein each piece is protruded to the upper base (51) Part (52), a straight pipe line, a small piece (a ₁ , ₂ ), an intermediate piece (a) by combining the straight sides and side walls of the small piece (a ₁ , a ₂ ) and the end piece (c). The problem was solved by a heat insulation block for a floor heating panel in which a curved piping path can be formed by combining the arcuate hypotenuses and side walls of the end piece (c) and the corner piece (d).
According to the invention of claim 5, in the heat retaining block according to claim 4, a seat part (e ₁ ) having a substantially right isosceles triangle is formed at the corner part of the corner piece (d) and the seat part (e ₁ ). A connecting piece (e) having an arcuate small groove part (e ₂ ) is provided in the middle part, and is fitted to a substrate (71) and a small groove part (e ₂ ) of a size that can be fitted to the seat part (e ₁ ). It is possible to provide a heat retaining block that is arranged in units of four by a block connector having four small protrusions (72) that can be attached and that can be connected to each other at the center.
In the invention of claim 6, pieces _{(a 1, 2)} distance between adjacent linear sides of the spacing between the pieces to fit the intermediate piece and (b) direction _{(a 1, 2),} the end piece (c The distance between the straight side walls facing each other) and the shortest distance between the arc-shaped side walls of the adjacent end piece (c) and corner piece (d) are set to the same value (w). It can be a heat insulation block.
In the invention according to claim 7, in the heat retaining block according to claims 4 to 6, the base (51) is expanded in the vertical and / or left-right direction, and the protrusion corresponds to the expansion of the base (51). It can be set as the heat insulation block of Claims 3-5 which increased each piece of (52) sequentially.

According to the floor heating panel of the present invention, far infrared rays can be radiated from the upper plate using the heat of the hot water pipe and the hot plate, safety, cleanness, health promotion can be achieved, and the configuration is simple and lightweight.
When the heat insulation block of the present invention is used for a floor heating panel, the hot water pipe can be flexibly adapted to room heating conditions required by various customers.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a straight portion of a hot water pipe of a floor heating panel according to an example of the present invention.
FIG. 2 is a plan view in which four heat insulation blocks constituting the floor heating panel of FIG. 1 are connected.
FIG. 3 is a plan view in which the hot plates and the hot water pipe 4 are mounted on the four heat retaining blocks of FIG.
FIG. 4 is a perspective view showing each hot plate and block connector constituting the floor heating panel of FIG.
FIG. 5 is a plan view and a side view of a heat insulation block constituting the floor heating panel of FIG.
In the following, in the use state of the floor heating panel of the present invention, the floor finishing material side is the upper side,
A flat base side such as a floor slab or plywood will be referred to as the lower side, and in the plan view of the heat insulation block shown in FIGS.

First, referring to FIG. 1, components of the floor heating panel 1 according to an example of the present invention will be described. The floor heating panel 1 has, from above, an upper plate 2, a straight pipe hot plate 3, a bent pipe hot plate 3 ′, a hot water pipe 4, a heat insulating block 5, a heat insulating reflector 6 and a block connector 7. Here, the block connector 7 is a selective component used when connecting the heat retaining blocks 5 in units of four. FIG. 1 is a cross-sectional view (X and X directions in FIG. 3) of a portion where a straight portion 41 of a hot water pipe 4 to be described later is embedded.
Intervening upper plate 2 is a substantially square flat plate of thickness t _1, and a main component a polyvinyl chloride and calcium carbonate admixture thereto, carbon, and the surface layer and the back layer were mixed stone powder, etc., on said rear surface layers It is composed of three layers of an intermediate layer composed mainly of polyvinyl chloride and calcium carbonate containing at least 20% barley stone mixed with mixed material, carbon, stone powder, etc. It is twice as large as the module of block 5. If necessary, the surface layer, intermediate layer or back layer may be slightly mixed with a pigment to be colored. Here, barleystone is a kind of granite, a multi-element mineral that is porous and has been used for adsorption of harmful substances in the past, but in the present invention, far infrared radiation is frequently emitted by heating. Attention is focused on, and it is the most efficient for far-infrared radiation to be maintained at around 38 ° C., which is optimal for floor heating.
The straight pipe hot plate 3 is a large hot plate shown in FIG. 4A and is a thin zinc-coated steel plate having a substantially rectangular outer shape with a thickness t _2. The flat portions 31, 31 and the flat portions 31, 31 are arranged on the left and right. It has a substantially arc-shaped pipe groove 32 having an inner diameter D so that a straight line 41 of a hot water pipe 4 to be described later can be inserted. Here, the piping groove portion 32 has a narrow inlet 32a formed linearly on the upper surface side of the flat portion 31, and the hot water pipe 4 can be press-fitted with the straight portion 41 from the inlet 32a to be stably housed and held in the piping groove portion 32. The
Hot plate 3 'is a small hot plate shown in FIG. 4 (b), the outer shape is in thin zinc coated steel plate having a substantially square shape having a thickness of t _2, the flat portion 31' for the bends and orthogonal the flat portion 31 ' An approximately circular arc-shaped piping groove 32 'having an inner diameter D so that a circular arc portion 42 of a hot water pipe 4 to be described later can be inserted, and a flat portion 31'. Wedge-shaped small cuts 31 ′ a and 31 ′ b provided from the corners toward the intermediate portion of the pipe groove 32 ′. Here, the pipe groove 32 'has a narrow inlet 32'a formed in a circular arc shape in plan view like the pipe groove 32, and the hot water pipe 4 press-fits the arc 42 from the inlet 32'a into the pipe groove 32'. It can be stored and held stably. Here, the small cuts 31 ′ a and 31 ′ b are for absorbing strain at the time of forming the pipe groove 32 ′ and are not essential.
The hot water pipe 4 is a pipe made of a cross-linked circular polymer having an outer diameter D and an inner diameter d, for example, a cross-linked polyethylene. For the room heating, the straight portion 41 and the circular arc portion 42 that are continuous in a plan view corresponding to the arrangement of the heat source. Are appropriately selected and combined.

The heat insulating block 5 is also made of hard plastic, for example, polypropylene, and the outer shape is a substantially square-shaped molded body, which is usually half the size of the module of the upper plate 2, and has a substantially square plate shape and a thickness. the base 51 of t _4, and is formed from a height t ₃ only projections 52 projecting in different shape from the upper surface of the base portion 51.
Each component of the protrusion 52 is disposed symmetrically in the front-rear and left-right directions in a plan view with respect to the center o _{1 of the} entire base 51, and a honeycomb-shaped space is formed in any of the irregularly-shaped components. Although this space portion is a preferable configuration for reducing the weight and facilitating molding, the description thereof is omitted because it is not essential. The reference numerals in the drawings are partially omitted for the same components to avoid congestion. 3 will be described in a plan view unless otherwise specified.
First, four small pieces a ₁ are disposed at positions close to the center o ₁ of the entire base 51, with the hypotenuse corresponding side of the right isosceles triangle formed as a convex arcuate hypotenuse toward the center o ₁ side. Place the orthogonal linear sides Place the arcuate hypotenuse outside to the inside, has taken straight sides of the piece a ₁ adjacent to the interval w.
Four sets of four small pieces a ₂ are arranged in the same manner as the small pieces a ₁ with respect to four centers o _{2 at} symmetrically spaced positions from the center o ₁ . Between the arcuate hypotenuses of the facing small pieces a ₁ and a ₂ , four substantially ship-shaped intermediate pieces b surrounded by arcuate side walls having a radius r from the centers o ₁ and o ₂ are arranged at symmetrical positions. The arc-shaped side walls of the intermediate piece b facing the arc-shaped hypotenuses of the small pieces a ₁ and a ₂ are spaced by a distance w.
The center of the left and right and up and down straight lines passing through the center o ₁ and the left and right and upper and lower edges of the base 51 is the center o ₃ . Four end pieces c with gaps are provided on the top, bottom, left, and right.
Four corner pieces d are formed, each having a corner o _{4 at} the four corners of the base 51 and forming a quarter-arc side wall having a radius r, and the closest approach position between the adjacent end pieces c is set at a distance w.
As described above, the protrusion 52 is configured by combining the small pieces a ₁ , a ₂ , the intermediate piece b, the end piece c and the corner piece d, and each piece has the same height t from the upper surface of the base 51. _{3 is} projected to be flush with the base 51 to form a concave path so that the hot water pipe 4 can be stably held.
As an additional configuration, a connecting piece e is provided at the corner of the corner piece d, and the connecting piece e is a substantially right-angled isosceles triangle and has a seat part e ₁ slightly lower than the other part of the corner piece d. , small groove portion e ₂ of arcuate is provided along the hypotenuse of the triangle in an intermediate portion of the seat portion e _1, insulation block by fitting the block coupling 7 to be described later in the seat e ₁ and the small groove portion e ₂ It is possible to adapt the size of a desired room by connecting 5 in units of four.
As a result, three straight piping paths with a spacing w can be secured in the front and rear and left and right directions for one of the heat retaining blocks 5, and the arcuate hypotenuses of the small pieces a ₁ and ₂ and the intermediate piece b, the end piece c and the corner piece. A curved pipe line can be secured by selecting and combining the arcuate side walls of d. Moreover, it is possible to flexibly cope with a desired floor heating piping pattern by connecting the heat retaining blocks 5 in units of four and appropriately combining straight and curved piping paths.

Insulation reflecting plate 6 is placed thermal insulation of the base member on the lower side, a substantially square shape thin plate of the upper surface thickness heat reflecting material of the metal foil as aluminum foil is adhered to the side t _5, the base member Therefore, the cool air from the lower side of the floor is blocked, the heat from the upper side is prevented from being lost, and the heat reflection from the upper side is made possible by the heat reflecting material.
As shown in FIG. 4 (c) (shown in an inverted state), the block connector 7 is formed in a substantially square shape when the heat retaining blocks 5 are connected in units of four with a hard plastic, for example, a substantially square plate made of polypropylene. The board 71 having a size that can be fitted to the seat part e ₁ , and four pieces that protrude outwardly on each side of the board 71 on a concentric arc so as to be fitted to the small groove part e ₂ on the back surface of the board 71. And a small protrusion 72. Then, the substrate 71 to each seat e ₁ which side by side as insulation block 5 into four units substantially square shape in the central portion shown in FIG. 2 and 3, the small protrusions 72 were fitted to each small groove portion e ₂ The heat retaining blocks 5 can be firmly connected.

Next, with reference to FIG. 1 thru | or 3, the construction method of the floor heating panel 1 is demonstrated.
First, the heat insulating reflecting plate 6 is bonded to the entire flat base such as slab, plywood, etc., and the heat insulating block 5 is laid on the upper surface of the heat insulating reflecting plate 6 and fixed with a fixing tool such as a screw. At this time, the heat insulating block 5 is shown in FIG. As shown in the figure, an example will be described in which the center part is arranged in units of four and the central part is connected by the block connector 7 and the number corresponding to the size of the room is prepared.
According to the layout of the hot water pipe 4 corresponding to the desired room heating, the straight pipe hot plate 3 and the curved pipe hot plate 3 ′ are selected for the straight portion 41 and the arc portion 42, respectively. Then, in correspondence with the desired room heating, the concave pipe line formed by the combination of the small pieces a ₁ , a ₂ , the intermediate piece b, the end piece c and the corner piece d of the projection 52 of the heat retaining block 5 and the base 51 is provided. Pipe grooves 32 and 32 ′ are press-fitted, and flat portions 31 and 31 ′ are placed on the upper surface of the protrusion 52. Next, the hot water pipe 4 is press-fitted into the piping grooves 32 and 32 ′ from above the inlets 32 a and 32 ′ on the flat portions 31 and 31 ′ side. And 32 'are stored and held stably. FIG. 3 shows an example of the piping of the hot water pipe 4 in the hot plate 3 for straight pipes and the hot plate 3 'for curved tubes, but it is possible to flexibly respond to various customer requirements for room heating by variations of these piping combinations. It becomes.
Next, the upper plate 2 is adhesively coated with a heat-resistant adhesive such as a urethane adhesive on the flat portions 31 and 31 'of the straight pipe hot plate 3 and the curved pipe hot plate 3'. Since the upper plate 2 is usually twice the size of the module as the heat retaining block 5, the heat retaining blocks 5 connected in units of four are covered by the upper plate 2 without excess or deficiency.
Although the construction of the floor heating panel 1 of the present invention is completed as described above, the upper surface of the upper plate 2 is usually covered with a surface finishing material (not shown) such as flooring, carpet or tatami.

Next, the usage method of the floor heating panel 1 is demonstrated.
Although not shown in the drawings, when hot water of 60 to 70 ° C. is supplied to the hot water pipe 4 from separately installed oil, gas, electric water heater or the like, the hot plate 3 for the straight pipe and the curved pipe for which most of the hot water pipe 4 is covered. A heat insulating plate 6 is placed under the heat plate 3 ′ to be insulated by the lower base material, and heat is reflected upward by the heat reflecting material on the upper surface side. Because it is kept warm, most of the heat of the hot water is transmitted upward through the hot plate 3 for straight pipes and the hot plate 3 'for curved pipes to efficiently heat the upper plate 2, and the barleystone contained in the upper plate 2 Is heated and the temperature is kept at an appropriate temperature, and far infrared rays are generated frequently, thereby effectively acting as floor heating.
In order to prevent freezing in winter, it is preferable to use antifreeze for the hot water pipe 4.

The upper plate 2 is a substantially square compression-molded flat plate having a width of 900 mm, a longitudinal length of 900 mm and a thickness of 6 mm. The surface layer is made of 30% polyvinyl chloride, 50% calcium carbonate, mixed material, carbon, stone powder and 20% pigment. Mixed, back layer 30% polyvinyl chloride, calcium carbonate 50%, mixed material, carbon, and stone powder 20%, intermediate layer 30% polyvinyl chloride, calcium carbonate 30%, mixed material, carbon, stone powder In addition, 15% of pigment and 25% of barley stone are mixed, and an intermediate layer is interposed between the front and back layers, and compression molding is performed integrally. The surface layer, the back layer, and the intermediate layer have substantially the same thickness.
The straight pipe hot plate 3 is press-worked with a thin zinc-coated steel sheet having an outer shape of a lateral width of 210 mm, a front and rear length of 400 mm, and a thickness of 0.4 mm. The bent tube hot plate 3 'is press-worked with a thin zinc-coated steel plate having a lateral width of 195 mm, a longitudinal length of 195 mm, and a thickness of 0.4 mm and a substantially square shape.
The hot water pipe 4 is a cross-linked circular polyethylene pipe having an outer diameter of 20 mm and an inner diameter of 15 mm.
The heat insulating block 5 is made of hard polypropylene and is a substantially square compression injection molded body having a width of 450 mm × front and rear length of 450 mm × thickness of 25 mm. It consists of a protrusion 52 protruding by a height of 25 mm.
The heat insulating reflector 6 is provided with a heat insulating base material having a substantially square shape with a width of 1000 mm × front and rear length of 1000 mm × thickness of 2 mm, and an aluminum foil is attached to the upper surface side.
The block connector 7 is a substantially square plate having a width of 50 mm, a length of 50 mm in front and back, and a thickness of 11 mm made of hard polypropylene.
The floor heating panel 1 of Example 1 was obtained by the said construction method using each said component.
And the hot water of 60-70 degreeC is supplied to the hot water pipe 4 of the floor heating panel 1 of Example 1 from the oil water heater separately installed, the hot plate 3 for straight pipes and the hot plate 3 'for curved pipes are heated, and an upper plate No. 2 was heated, and the barley stone was maintained at a temperature of around 38 ° C., and far infrared rays were continuously generated to obtain a suitable floor heating.

  In the heat retaining block 5, the outer shape is a substantially square molded body, and the base 51 is described as a substantially square flat plate. However, as a modified example, the base 51 is expanded in the vertical and / or horizontal directions to accommodate the expansion of the base 51. In this case, each piece of the protrusion 52 may be sequentially increased. However, when the heat insulating block 5 is used, a unified module is easy to use.

  The floor heating panel can radiate far infrared rays from the hot plate and can be used for safety, cleanness and health promotion. Hot water pipes can flexibly meet the demands of various customers.

It is a cross-sectional view of the hot water pipe straight part of the floor heating panel of an example of the present invention. It is the top view which connected four heat insulation blocks which comprise the floor heating panel of FIG. FIG. 3 is a plan view in which each heat plate and hot water pipe are attached to four heat retaining blocks in FIG. 2. It is a perspective view of the component of the floor heating panel of FIG. 1, (a) Hot plate hot plate for straight pipes, (b) Hot plate for bent pipes, and (b) Block connector. It is (a) top view and (b) side view of the heat insulation block which comprises the floor heating panel of FIG.

Explanation of symbols

1
Floor heating panel 2
Upper plate 3
Hot plate for straight pipe 3 'Hot plate for curved pipe 31, 31'
Flat part 32, 32 '
Piping groove 4
Hot water pipe 41
Straight line part 42
Arc part 5
Thermal insulation block 51
Base 52
Projection 6
Insulating reflector 7
Block connector 71
Board 72
Small protrusion a ₁ , a ₂ Small piece b
Intermediate piece c
End piece d
Corner piece e
Connection piece e ₁ seat part e ₂ small groove part o _{1 to} o ₄ center

Claims (7)

  From the upper surface, polyvinyl chloride and calcium carbonate as main components, and a surface layer and a back surface layer in which a mixture or the like is mixed, and between the front and back layers, polyvinyl chloride and calcium carbonate as main components, and at least 20% barley stone A straight plate hot plate having a flat plate that is compression-molded with an intermediate layer mixed with a mixed material and the like, and a pipe groove portion that is made of a thin zinc-coated steel plate and extends in a straight line in the middle between the left and right flat portions of a substantially rectangular shape. And a hot plate for curved pipes having arcuate pipe groove portions below two orthogonal sides of a substantially rectangular flat part, a hot water pipe made of a cross-linked polymer made of a straight circular part and a circular part, and a hard plastic A heat insulating block having a protrusion protruding from the upper surface of the flat base portion and a thin heat insulating reflecting plate having a metal foil adhered to the surface of the heat insulating base material are sequentially fixed to each other, and the base portion and the protrusion portion Concave Floor heating panel, characterized in that the linear press-fitted to the formed straight and curved pipe passage and said hot water pipe in an arc shape pipe groove portion was allowed housed and held from above on.   2. The floor heating panel according to claim 1, wherein the base of the heat insulation block has a substantially square shape and is formed in a corner portion of each protrusion and is formed in a substantially square isosceles triangular seat having a small groove portion. And a block connector having small protrusions that can be fitted in the small groove portion, the heat insulating blocks are arranged in units of four, and the heat insulating blocks are connected to each other by a block connector in the center portion. Heating panel.   In the piping groove part of the straight pipe hot plate, a narrow inlet is formed in a straight line on the upper surface side of the flat part, and the straight part of the hot water pipe is press-fitted from the inlet, and the piping groove part of the bent pipe hot plate is flat. A narrow entrance is formed in an arc shape on the upper surface side of the part, and the arc part of the hot water pipe is press-fitted from the entrance so that the hot water pipe can be stored and held in each piping groove part. The floor heating panel according to 3. B) A base part (51) of a substantially square flat plate shape made of a hard plastic, and b) four right-angled isosceles triangles having an oblique side formed in an arc shape in the vicinity of the center (o ₁ ) of the base part (51). small pieces _{(a 1)} and said central _{(o 1)} from the distant position 4 places symmetry center _{(o 2)} the small pieces to _{(a 1)} and the same four pieces _{(a 2)} are arranged respectively, Four intermediate pieces (b) surrounded by arc-shaped side walls having a radius (r) from the center (o ₁ , o ₂ ) between the arc-shaped hypotenuses of the small pieces (a ₁ , a ₂ ) facing each other are in a symmetrical position. is disposed, the center (o ₁₎ middle straight semicircular side walls of right and left, and up and down direction line and said base through (51) around the intersection four places the edge (o ₃₎ and to the radius (r) endpiece spaced by the side wall (c) is 4 Kumihai set vertically and horizontally, around the four corners of the base (51) (o ₄₎ Four corner pieces d forming quadrant arc-shaped side walls with a radius (r) are provided, and each piece includes a protrusion (52) protruding on the base (51), Combining the straight sides and the side walls of the small piece (a ₁ , a ₂ ) and the end piece (c), the straight pipe line, the small piece (a ₁ , ₂ ), the intermediate piece (b), the end piece (c) And a heat insulating block for a floor heating panel, wherein curved arcs can be formed by combining the arcuate hypotenuses and side walls of the corner pieces (d). In thermal insulation block according to claim 4, arcuate small groove portion in the middle part of the seat substantially isosceles right triangle at the corner portion of the corner piece _(d) (e 1) and the seat section (e ₁₎ (e ₂ ) Having a connecting piece (e) having a size that can be fitted to the seat (e ₁ ) and four small protrusions (72) that can be fitted to the small groove (e ₂ ). The heat insulating block characterized by being arranged in units of four by a block connector having a central portion and being connectable to each other at the center. Pieces _{(a 1, 2)} distance between adjacent linear sides of said small pieces to fit the intermediate piece and (b) direction _{(a 1, 2)} to the distance, spacing countercurrent fit straight side wall of the end piece (c) and, The heat insulating block according to claim 4 or 5, wherein the shortest interval between the arc-shaped side walls of the adjacent end piece (c) and corner piece (d) is set to the same value (w). The heat insulating block according to claim 4-6, wherein the base (51) is expanded vertically and / or horizontally, and each piece of the protrusion (52) is sequentially increased corresponding to the expansion of the base (51). The heat insulating block according to claim 3, wherein

Images