JP4708164B2 - Floor heating unit - Google Patents

Description

  The present invention relates to a floor heating unit. More specifically, the present invention relates to a floor heating unit applicable to a floor surface having a lattice-like reinforcing rib on the lower surface side.

  Conventionally, various heating technologies have been proposed and put into practical use for the purpose of improving the comfort of living spaces in structures such as cold seasons in cold regions and houses in cold regions. Most of them are placed on the floor of the living space. The base material is a foamed synthetic resin plate or wood plate, and a groove is engraved on one side of the plate. And a floor heating panel having a structure in which these surfaces are covered with a flexible thin plate such as an aluminum foil.

  There is a similar demand for improving comfortability by heating technology even in bathroom dressing and washing places. People with high blood pressure, a type of lifestyle-related disease, and elderly people not only feel uncomfortable when bathing clothes and washrooms are cold, but also due to blood pressure fluctuations caused by sudden drop in body temperature. There was an accident. The dressing room in the bathroom can be used as a heating floor by arranging a floor heating panel with a small area.

In order to use the floor of the bathroom washer as a heating floor, a method of sticking a sheet heating element to the back surface of the bathroom washer has been proposed. However, in many cases, the bathroom has a unit structure including a bathtub and a washing area. In the unit bath, many of the bathtub and the washing area are formed by a sheet molding compound (SMC) method, and a lattice ( (Vertical and horizontal) Since the ribs are integrally formed, there is a problem that the sticking work is complicated when using the method of sticking the sheet heating element to the floor back surface. For this problem, the inventor of the present application disclosed in Patent Document 1,
“In the heat sink that is formed by the sheet molding compound (SMC) method and can be fitted into the grid-like (vertical and horizontal) ribs integrally formed on the bottom surface of the floor, the heat sink is a foamed synthetic resin having a long narrow width. A heat medium tube is embedded in one surface of the plate, and a metal foil is attached to the surface of the heat medium tube embedded as one unit (sheet) heat sink, and multiple units (sheets) heat sink The heat medium tubes are connected in parallel along the length direction of the foamed synthetic resin plate at both ends in the width direction of one surface of the foamed synthetic resin plate, and are connected in the length direction. It is embedded in the fluid tube embedding groove opened and engraved at both ends of the foam, and the one end in the longitudinal direction of the foamed synthetic resin plate is exposed with a margin in length to form a U-shape, and the direction is changed at the other end. Exposed to form a U shape and change direction The exposed heat transfer medium tube is made longer than the length of the lattice vertical ribs forming the lattice ribs at the central portion that communicates with other foamed synthetic resin plates and bisects the plurality of heat sinks. On the other surface of the synthetic resin plate, two V-shaped cuts are engraved along the heat medium tube embedding groove between the two fluid tube embedding grooves parallel to the one surface, and In addition, the incised portion penetrating the foamed synthetic resin plate and the metal foil is perpendicular to the V-shaped cut, and the interval between them is the same as the interval between adjacent lattice ribs. A heat radiating plate characterized in that the same number of cuts are provided, and grid ribs formed on the lower surface of the floor can be fitted into the cut portions.
Is disclosed.
JP 2005-42339 A

  However, in the structure of the heat radiating plate disclosed in Patent Document 1, the metal foil attached to the foamed synthetic resin plate is exposed further below the rib formed on the lower surface of the floor, and the interior of the floor is exposed from this site. There is a problem that the ratio of the amount of heat transferred to the floor surface with respect to the amount of input heat (hereinafter sometimes referred to as “thermal efficiency”) is deteriorated because heat is robbed by the circulating outside air.

  Then, this invention makes it a subject to provide the floor heating unit which can be applied to the floor surface provided with the grid | lattice-like reinforcement rib on the lower surface side, and has good thermal efficiency.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  The invention according to claim 1 is arranged on the lower surface side of the floor surface provided with the lattice-like ribs (8, 9) on the lower surface side, and has the vertical recesses arranged by the lattice-like ribs. Two wall portions formed so as to be continuously embedded in one direction and opposed to inner surfaces of two adjacent ribs formed in parallel in one direction, Heat embedded in each of the long foamed synthetic resin plate (1) formed by projecting below one rib in a direction perpendicular to one direction and the two walls of the portion projecting below the rib A unit comprising a medium pipe (3) and a metal foil (4) affixed to the surface of the two wall portions facing the inner surface of the parallel ribs is a unit of heat dissipation unit (12). A plurality of the heat radiating units (13) are connected to a floor heating unit in which a heat medium pipe communicates. The floor heating unit (11) is characterized in that the metal foil is covered with a heat insulating material (20, 30) at least at a portion where the wall portion protrudes and is exposed below the rib (8). Thus, the above-mentioned problem is to be solved.

  The invention according to claim 2 is the floor heating unit (11) according to claim 1, wherein the heat insulating material (30) is between the rib (8) and the metal foil (4) attached to the wall. It has a cross-sectional wedge shape so that it can be inserted.

  The invention according to claim 3 is the floor heating unit (11) according to claim 1 or 2, wherein the long foamed synthetic resin plate (1) is two V-shaped parallel to the longitudinal direction of the long flat plate. After the groove (5) is formed, the groove is folded into a U-shaped cross section so that the groove is closed. The opening angle of each V-shaped groove bottom is A degrees, and the wedge shape of the heat insulating material (30) is formed. When the tip angle is B degrees, the value of (A−B) is approximately 90 degrees.

  ADVANTAGE OF THE INVENTION According to this invention, even if it applies to the floor surface provided with the grid | lattice-like rib on the lower surface side, a floor heating unit with good thermal efficiency can be provided.

  Such an operation and gain of the present invention will be made clear from the best mode for carrying out the invention described below.

Hereinafter, the present invention will be described in detail.
The present invention is such that floor-like recesses arranged on the lower surface side of the floor surface having grid-like ribs on the lower surface side and arranged vertically and horizontally formed by the grid-like ribs are continuously embedded in one direction. And two wall portions formed so as to face the inner surfaces of two adjacent ribs formed parallel to one direction, the two wall portions being in a direction perpendicular to the one direction. A long foamed synthetic resin plate that protrudes below the ribs, a heat transfer pipe embedded in each of the two walls of the portion protruding below the ribs, and parallel ribs on the two walls. A floor heating unit in which a plurality of heat radiating units are communicated with a heat medium pipe, with a unit comprising a metal foil attached to a surface facing the inner surface as a unit of heat radiating unit, The part where at least the wall part protrudes below the rib and is exposed Oite a floor heating unit, characterized in that are covered with insulation.

  The floor having the grid-like reinforcing ribs on the lower surface side to which the floor heating unit of the present invention is applied is formed by, for example, a sheet molding compound (SMC) method, or a female mold having a corresponding shape is used. The floor is formed by direct injection molding or the like. In the SMC method, a reinforcing fiber having a length of 10 to 20 mm in a roving shape is mixed with a resin to form a sheet. This sheet is placed in a mold, cured by pressing and heating, and then released to obtain a product. Say the law. Examples of resins that can be used include unsaturated polyester resins, epoxy resins, and vinyl ester resins. Examples of the reinforcing fiber include glass fiber, carbon fiber, and ceramic fiber. Among these, glass fiber is preferable. The ratio between the resin and the reinforcing fiber can be a ratio that is usually employed when manufacturing a unit bath or the like.

  In the case of a unit bath or the like, the floor surface formed by each of the above methods may be formed as a structure in which a part of the outer wall of the bathtub is connected, but the outer wall is formed as a structure that does not connect the outer wall by post-processing methods. It is preferable to connect to. In the case of a bathroom washing place, the floor area is 80 to 300 cm × 80 to 300 cm, and the floor surface is usually rectangular. Grid-like ribs are integrally formed on the lower surface of the floor formed by the injection molding method or the SMC method. This lattice-shaped rib means a structure in which a plurality of vertical ribs and a plurality of horizontal ribs orthogonal to the vertical ribs are combined at a right angle. The thickness of the floor is in the range of 2 to 10 mm, the thickness of the grid ribs is in the range of 2 to 10 mm, and one grid rib space surrounded by the vertical and horizontal ribs is in the range of 5 to 15 cm. The height of the rib can be selected in the range of 10 to 60 mm. The height of the grid ribs is preferably the same, but the spaces surrounded by the vertical ribs and the horizontal ribs do not have to be all the same size. It can be made smaller than the space.

  Synthetic resins constituting the foamed synthetic resin plate include polyamide resins such as polyamide 6, polyamide 6 · 6, polyamideimide, polyolefin resins such as polyethylene, polypropylene and ethylene-propylene copolymer, polyethylene terephthalate, polybutylene terephthalate. And polyester resins such as polyvinyl chloride, polyurethane, polystyrene, and ABS resin. The expansion ratio of the foamed plate-like body prepared from these synthetic resins is preferably about 1.5 to 80 times. The foamed synthetic resin plate is a long narrow rectangle having a length of 90 to 250 cm, a width of 10 to 30 cm and a thickness of 10 to 50 mm, and a size larger than the outer diameter of the fluid tube. The lengths of the foamed synthetic resin plates need not all be the same. That is, since it is not necessary to arrange a heat radiating unit in a portion where an opening or the like is provided on the floor surface as necessary, the foamed synthetic resin plate hitting this portion can be made shorter than other portions.

  Each heat radiating unit constituting the floor heating unit of the present invention is formed by using a foamed synthetic resin plate as a substrate. A heat medium tube embedding groove is engraved at both ends in the width direction of one surface of the foamed synthetic resin plate in parallel with the length direction of the foamed synthetic resin plate and at both ends in the length direction. The buried groove preferably has a U-shaped cross section cut at right angles to the direction in which the buried groove extends. The dimensions of the opening and depth of the buried groove are preferably the same as or slightly smaller than the outer diameter of the heat medium tube. The reason why the heat medium tube embedded groove is opened at both ends of the foamed synthetic resin plate in the length direction is to guide the heat medium tube embedded in the embedded groove to the outside of the foamed synthetic resin plate and to change the direction outside. That is, at one end in the length direction of the foamed synthetic resin plate, it is exposed with a margin in length, formed into a U shape, changed in direction, and returned to the buried groove of the same foamed synthetic resin plate. Then, a U-shape having an exposed portion longer than the U-shape is formed at the other end, the direction is changed, and the lead is led to a buried groove of another foamed synthetic resin plate.

  The heat medium tube embedded in the embedded groove functions to circulate the heat medium in the inner space and supply heat to the outside, such as flexibility, mechanical strength, heat resistance, chemical resistance, etc. Need to be excellent. Examples of the heat medium tube exhibiting such characteristics include a crosslinked polyethylene tube, a polybutene tube, a polypropylene tube, and a resin tube in which a metal wire is embedded in the wall surface of the tube. Among these, a crosslinked polyethylene pipe and a polybutene pipe are preferable. The diameter of the heat medium tube varies depending on the thickness of the floor surface, the arrangement density of the heat medium tubes, the type of the heat medium, the circulation amount of the heat medium, the temperature of the heat medium, etc. The range is 25 mm and the inner diameter is 3 to 20 mm.

  Examples of the heat medium that circulates inside the heat medium tube include hot water, water vapor, and oil. The heat medium is circulated to the heat medium tube via the header by adjusting the temperature and pressure with a heat medium circulation device. The heat medium circulation device is preferably installed in the vicinity where the floor heating unit is installed, for example, under the floor, outdoors, on the roof, on the veranda.

  The metal foil attached to the surface of the heat transfer medium tube supports and fixes the heat transfer medium tube embedded in the embedded groove of the foamed synthetic resin plate from the side of the embedded groove and also transfers heat from the heat transfer medium tube to the floor surface. It fulfills the function of heating. Examples of the metal foil include metal foil such as aluminum foil, tin foil, copper foil, and stainless steel foil. Among these, aluminum foil is most preferable from the viewpoint of ease of manufacture and cost. If the thickness of the metal foil is too thin, the strength will be insufficient and it will be easily damaged, and if it is too thick, the weight of the product will increase and the cost will increase, and it will be difficult to form the notches described later. It is preferable to select within the range. The interface between the foamed synthetic resin plate and the metal foil is preferably bonded with an adhesive interposed. In addition, when the metal foil is pasted on the portion of the foamed synthetic resin plate that extends from the periphery of the opening portion to the bottom of the U-shaped groove, the heat medium tube is embedded in the direction in which the embedded groove extends. It is preferable because the heat from can be efficiently transferred to the metal foil adhered to the surface of the heat medium tube.

In the floor heating unit of the present invention, the metal foil is covered with a heat insulating material at a portion where at least one surface protrudes below the rib and is exposed. The form of the heat insulating material that covers the metal foil is not particularly limited, and a synthetic resin layer formed on one side of the metal foil is bonded to the surface opposite to the surface on which the synthetic resin layer is formed. A layer may be formed and attached to the wall of the foamed synthetic resin plate. Moreover, you may insert the heat insulating material formed in the cross-sectional shape wedge shape between the metal foil fastened to the wall part of a foaming synthetic resin board, and a rib. The resin constituting the heat insulating material is not particularly limited, but in the case of a synthetic resin layer, from the viewpoint of cost and moldability, natural rubber, ethylene-propylene rubber, silicon rubber, butyl rubber, urethane rubber, etc. , Polyolefins such as polyethylene and polypropylene, polystyrenes such as polystyrene and ABS, acrylic resins, and respective foams or woven fabrics can be used, especially polyolefin resins and polystyrene resin foams, It is preferable from the viewpoint of heat insulation. In addition, when the heat insulating material is constituted by a wedge-shaped member, from the viewpoint of moldability and cost, foams such as polystyrene resins, polyolefin resins, urethane resins, insulation boards, and waste paper can be used. A polystyrene resin foam is preferred from the viewpoints of heat insulation and insertability.
The thickness of the synthetic resin layer is preferably as thick as possible from the viewpoint of strength and heat conduction, and as thin as possible from the viewpoint of cost and availability. Specifically, a range of 0.2 to 10 mm is preferable.
On the other hand, when the heat insulating material has a wedge shape in cross section and is inserted between a metal foil attached to the wall of the foamed synthetic resin plate and the rib, the tip angle of the wedge shape is easy to insert. From the viewpoints of strength, heat insulation effect, etc., the range of 0 to 20 degrees is preferable.

  By adopting such a configuration, heat dissipation from the metal foil with one side exposed under the rib to the outside air circulating in the lower part of the floor is suppressed, and the amount of heat input to the heat radiating unit is sent to the floor side without waste. To increase the thermal efficiency.

  A heat dissipation unit is a unit with a heat sink tube embedded in one surface of a long and narrow foamed synthetic resin plate and a metal foil attached to the surface of the heat medium tube. A plurality of heat radiation units having such a structure are connected by a continuous heat medium tube. In the central portion that bisects the plurality of units of heat dissipation units, the exposed heat medium tube has a dimension longer than the length of the lattice vertical ribs that form the lattice ribs. At the part where the heat medium tube is exposed for a long time, the direction of the entire divided heat dissipation unit is changed. Multiple units of heat dissipation units can be connected by a single continuous heat medium tube, and the heat dissipation units can be heated to a uniform temperature as a whole by combining the half heat dissipation units by changing the direction at the center. . Details will be described later with reference to FIGS.

  On the back surface of the foamed synthetic resin plate constituting the heat dissipation unit, two V-shapes are formed along the heat medium tube embedding groove between two parallel fluid tube embedding grooves engraved on the other surface (front surface). Make a groove. The V-shaped groove functions so as not to damage the foamed synthetic resin plate when one unit of the heat radiating unit is bent into a bowl shape with the metal foil sticking surface outside (see FIGS. 3 to 6 to be described later). Is. When the synthetic resin layer as a heat insulating material is formed on the metal foil, it is preferable that the V-shaped angle of the V-shaped groove is in the vicinity of 90 degrees. Further, when a wedge-shaped heat insulating material is interposed between the metal foil and the rib, when the open angle of the V shape is A (degrees) and the wedge-shaped tip angle is B (degrees) in each of the left and right, It is preferable that the value of (AB) is approximately 90 (degrees). The position where the V-shaped groove is provided is preferably a position where the fluid tube does not contact the lattice rib when the heat dissipation unit is fitted into the lattice rib on the lower surface of the floor.

  The heat radiating unit has a notch passing through the foamed synthetic resin plate and the metal foil, between the two heat medium tube embedded grooves, perpendicular to the two V-shaped grooves, and The same number of grid ribs as that of the grid horizontal ribs are provided at the same interval as that of the grid horizontal ribs fitted therein. The notch portion is for fitting the grid lateral rib formed on the floor lower surface when the heat dissipation unit is bent into a bowl shape and fitted into the grid rib formed on the floor lower surface. The length of the cut portion is larger than the interval between the two V-shaped grooves, but smaller than the interval between the two heat medium tube embedded grooves. In this application, when the heat dissipating unit is bent into a bowl shape and fitted into a grid-like rib formed on the lower surface of the floor, the surface of the heat dissipating unit on the side where the heat medium tube embedding groove is provided is Part ".

  Next, the construction method of the floor heating unit will be described. First, a floor surface in which lattice-like ribs are integrally formed on the lower surface is prepared and prepared, and in parallel, the heat radiation unit described in detail above is prepared and prepared. Turn the floor upside down.

  Next, one unit of the heat radiating unit is bent into a bowl shape with the metal foil sticking surface on the outside, and the grid ribs on the lower surface of the floor are fitted into the cut portions of the heat radiating unit. Next, the side surface of the ridge is brought into contact with the grid-like vertical ribs, and the upper surface of the heel to which the metal foil is attached is brought into contact with or close to the plane surrounded by the grid-like ribs, and the first row of grid-like rib spaces Fit into the part. By bringing the upper surface of the basket into contact with or close to the plane surrounded by the grid-like ribs, the heat from the heat radiation unit can be efficiently transferred to the floor surface.

  Subsequently, the other heat radiating units connected to the odd-numbered grid-like rib space portions in ascending order by the heat radiating units and the fluid tubes are sequentially fitted in the same procedure as described above. Finally, change the direction of the rest of the heat radiating unit at the part where the fluid tube is exposed for a long time, and, in descending order, connect the other heat radiating unit connected to the heat radiating unit by the fluid tube in the same procedure as above. The heat radiating units are sequentially fitted, and the surface on which the heat radiating units are fitted is defined as the front side. When using a wedge-shaped heat insulating material, the longitudinal direction of the cross-sectional wedge-shaped heat insulating material is made to coincide with the longitudinal direction of each heat radiating unit after the above procedure, and inserted between the left and right metal foils and the ribs. Thereby, the floor surface which attached the floor heating unit of this invention can be obtained.

Hereinafter, a heating floor structure of a bathroom provided with a floor heating unit according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following description examples as long as the gist thereof is not exceeded.

Example 1
FIG. 1 is a back view of one unit (sheet) of the heat radiating unit 12a, and FIG. 2 is an enlarged vertical sectional view taken along a line II-II in FIG. As shown in FIGS. 1 and 2, the heat radiating unit 12 a has an aluminum foil 4 attached to one surface side of the rectangular foamed polystyrene plate 1, and a heat insulating material on the upper surface side of the aluminum foil 4. The synthetic resin layer 20 is affixed. In FIG. 1, the expanded polystyrene board 1 before the aluminum foil 4 and the synthetic resin layer 20 are affixed, and the heat-medium tube 3 mentioned later are represented.

  The expanded polystyrene plate 1 has two V-shaped grooves 5 and 5 formed in the longitudinal direction on the lower surface side. The opening angle of the V-shaped groove 5 is approximately 90 degrees. Further, the expanded polystyrene plate 1 is formed with a plurality of cut portions 6, 6,... In a direction orthogonal to the V-shaped grooves 5, 5. The incisions 6, 6,... Are engraved with the same number and position as the lattice ribs 9. On the surface of the expanded polystyrene plate 1 opposite to the surface on which the V-shaped grooves 5 and 5 are formed, the V-shaped grooves 5 and 5 are disposed at a position 20 mm from the width direction end of the expanded polystyrene plate. The heat medium tube burying grooves 2 and 2 are engraved with the interval shifted by 21 cm. The heat medium tube embedding groove 2 is engraved with a size of a width of 7.2 mm and a depth of 7.2 mm. The heat medium tube embedding grooves 2 are engraved at both ends in the width direction of one surface of the expanded polystyrene plate 1 in parallel along the length direction of the expanded polystyrene plate and opened at both ends in the length direction. Has been. In the figure, the heat medium tube burying groove 2 and the heat medium tube 3 appear to overlap each other. In the heat medium tube embedding groove 2, a cross-linked polyethylene heat medium tube 3 having an outer diameter of 7.2 mm was embedded. The foamed polystyrene plate 1 used had a thickness of 20 mm, a width of 25 cm, and a length of 90 cm, the same thickness and width, and a length of 70 cm.

  An aluminum foil 4 having a thickness of 100 μm is attached to the upper surface of the expanded polystyrene plate 1. The aluminum foil 4 is coated with an adhesive (not shown) on the lower surface side and attached to the upper surface side of the expanded polystyrene plate 1. A synthetic resin layer 20 as a heat insulating material is bonded to the surface of the aluminum foil 4 opposite to the surface on which the foamed polystyrene plate 1 is adhered by a method such as thermal lamination. In the synthetic resin layer 20, notches 21 and 21 are formed in advance corresponding to the formation positions of the V-shaped grooves 5 and 5.

  3 is a plan view of the heat radiating unit 12b in the middle of bending the heat radiating unit 12a shown in FIG. 1, and FIG. 4 is an enlarged longitudinal sectional view taken along the IV-IV portion of FIG. 5 is a plan view of the heat dissipating unit 12c in a state where the folding into a bowl shape is completed, and FIG. 6 is an enlarged vertical sectional view taken along the VI-VI portion of FIG.

  As shown in FIG. 6, in the heat radiation unit 12c in a state where the folding into the bowl shape is completed, the V-shaped grooves 5 and 5 are completely closed, and the expanded polystyrene plate 1 has a U-shaped cross section. become. At this time, the synthetic resin layer 20 on the upper surface side is peeled in the longitudinal direction using the notches 21 and 21. This is because the lower surface side of the floor surface 10 and the aluminum foil 4 are brought into direct contact with each other to improve heat conduction.

  7 is a schematic plan view of the heat radiating unit 13a in a state where a plurality of the heat radiating units 12c shown in FIG. 5 are connected by a single heat medium tube, and FIG. 8 is a half of the heat radiating at the central portion that bisects the plurality of heat radiating units 13a. FIG. 9 is a schematic plan view of the heat dissipating unit 13b in the middle of changing the direction of the entire unit, and FIG. 9 is a heat dissipating unit in a state in which the heat dissipating units for the latter half are fitted into the even-numbered grid-like rib space portions. A schematic diagram of the plane is shown.

  The heat medium tube 3 is exposed at a length of one end of the expanded polystyrene plate 1 with a margin in length and formed into a U shape (see reference numeral “3a” in FIGS. 1 and 3), and the direction is changed. Then, it was returned to the buried groove of the same expanded polystyrene plate, exposed at the other end of the expanded polystyrene plate 1 longer than the U-shape, formed into a U-shape, changed direction, and led to another expanded polystyrene plate (Fig. 7). While the exposed length was longer than that of the U-shaped portion 3a and connected to another expanded polystyrene plate, the heat radiation unit for the latter half was fitted (see FIG. 9).

  In FIG. 7, the heat dissipating unit 13a composed of a plurality of units is connected by a single heat medium tube 3, but is divided into two at the central portion, and the heat medium tube 3c at the central portion is the heat dissipating unit at the central portion. The dimensions were longer than the length. This is to make it possible to change the direction of the heat dissipating unit 13a composed of a plurality of units at the central portion so that the heat medium tube 3 does not buckle.

  On the surface of the expanded polystyrene plate 1 on which the aluminum foil 4 is not adhered, between the two fluid tube embedded grooves 2 in a plan view, the distance between the two is set to 7 cm, and the two are provided along the heat transfer medium tube embedded grooves 2. A V-shaped groove 5 was cut. As described above, the V-shaped groove 5 functions so that the foamed polystyrene plate is not damaged when the foamed polystyrene plate 1 is folded into a bowl shape with the aluminum foil sticking surface of the foamed polystyrene plate 1 facing outside.

  In order to fit the heat radiating unit into the space part integrally formed on the lower surface of the bathroom washroom floor surface, first, as shown in FIG. The other heat radiating units connected by the heat medium tube were sequentially fitted in the same procedure as above. Next, as shown in FIG. 8, at the portion 3c where the heat medium tube is exposed long, the entire remaining heat radiating unit is redirected, and the heat radiating unit and the fluid tube are arranged in descending order into the even-numbered grid-like rib space portions. The other heat radiating units connected in order were sequentially fitted in the same procedure as above. Thus, the floor heating unit 11 of the present invention as shown in FIG. 9 was produced. The surface on which the floor heating unit 11 is fitted in this way is the front side, the left and right ends of the washing floor are placed on a bathroom pedestal, and both ends of the heat medium tube are connected to the connecting pipe from the heat medium circulation device, The floor surface of a washable washroom was obtained.

  In addition, in each unit of the plurality of heat radiation units, the same number of cut portions 6 that penetrate the aluminum foil 4 of the expanded polystyrene plate 1 as the lattice lateral ribs 9 were provided. The notches 6 have a width of 5 mm and a length of 90 mm, and are perpendicular to the V-shaped groove 5 and have the same spacing as the spacing of the adjacent lattice ribs 9. Further, the cut portion 6 was made shorter than the interval between the two heat medium tube burying grooves 2. When the expanded polystyrene plate 1 was folded into a bowl shape with the aluminum foil sticking surface outside, and incorporated along the lattice vertical ribs 8 on the lower surface of the washroom floor of the bathroom, lattice lateral ribs were fitted. By doing so, the side surface 7 of the basket is brought into contact with the grid vertical ribs, and the upper surface of the basket with the metal foil 4 attached is brought into contact with or close to the plane surrounded by the grid-like ribs, that is, the lower surface side of the bathroom floor. be able to.

  FIG. 10 is a partially enlarged longitudinal sectional view showing a floor structure in which a heat dissipation unit is fitted in a lattice-like rib space portion on the floor surface of a bathroom washroom to allow heating. This is because the grid vertical ribs 8 in the state in which the heat dissipation unit is fitted in the space of 90 mm × 90 mm grid ribs (thickness 5 mm, height 40 mm) integrally formed on the lower surface of the bathroom wash floor 10. FIG. 3 is a partially enlarged longitudinal sectional view when cut at right angles. In FIG. 10, the lattice rib space is formed by bringing the side surface of the ridge into contact with the lattice vertical ribs 8 and the upper surface (metal foil attachment surface) of the ridge is in contact with or close to a plane surrounded by the lattice (vertical and horizontal) ribs. The state where it is fitted in the part is shown.

  As described above, the heat from the heat radiating unit can be efficiently transferred to the bathroom floor by bringing the upper surface of the basket into contact with or in close proximity to a plane surrounded by grid-like (vertical and horizontal) ribs. Furthermore, since the aluminum foil 4 is covered with the synthetic resin layer 20 that is a heat insulating material, the portions not in contact with the ribs at both ends of the expanded polystyrene plate 1 are suppressed from taking heat away from the outside air flowing through the lower surface under the floor. The

(Example 2)
In Example 2, instead of the synthetic resin layer 20 disposed on the upper surface side of the aluminum foil 4 in Example 1, a wedge-shaped member 30 is inserted between the lattice lateral ribs 8 and the aluminum foil 4 to obtain the aluminum foil. 4 to suppress heat radiation to the outside air under the floor. FIGS. 11-13 is a figure which shows the outline of the procedure which assembles the floor heating unit concerning Example 2 in a cross section. In the present embodiment, the opening angle of the V-shaped groove formed on the expanded polystyrene plate 1 is made slightly larger. Therefore, when the expanded polystyrene plate 1 is folded into a bowl shape using the V-shaped groove, the opening portion having a cross-sectional shape “U” has a slightly narrow shape. This is because when the wedge-shaped member 30 is inserted later, it can be arranged without a gap. Each of the folded heat dissipating units is arranged so as to be sandwiched between the lattice vertical ribs 8, 8,... (FIGS. 11 and 12), and further, in the gap between the aluminum foil 4 and the lattice vertical rib 8. The wedge-shaped member 30 is inserted to complete the floor heating unit of the second embodiment (FIG. 13).

  In any of the floor heating units of Example 1 and Example 2 described above, the ratio (Q2 / Q1) of the amount of heat Q2 supplied to the floor relative to the amount of heat Q1 input was 57%. It was. On the other hand, when the aluminum foil 4 which does not use the heat insulating materials 20 and 30 was prototyped and similarly measured for heat transfer efficiency, it was 43%. Therefore, in the floor heating unit of the present invention, it was confirmed that the thermal efficiency was improved by 14% by covering the exposed portion of the aluminum foil with a heat insulating material.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the scope or spirit of the invention which can be read from the claims and the entire specification, and a floor heating unit with such a change is also included in the technical scope of the present invention. Must be understood as.

It is a reverse view of a unit (sheet | seat) thermal radiation unit. FIG. 2 is an enlarged vertical sectional view taken along a line II-II in FIG. 1. It is a top view in the middle of bending the heat radiating unit shown in FIG. FIG. 4 is an enlarged vertical sectional view taken along the IV-IV part in FIG. 3. It is a top view of the state which completed the folding of the thermal radiation unit to the bowl shape. FIG. 6 is an enlarged longitudinal sectional view taken along a VI-VI part in FIG. 5. It is the plane schematic diagram of the state which connected the several thermal radiation unit with the one heat medium tube. In the center part which bisects a plurality of heat dissipation units, it is the plane top view in the middle of changing the direction of the whole half heat dissipation unit. It is a schematic plan view of a state in which the heat radiation units for the latter half are fitted into the even-numbered grid-like rib space portions. It is the partial expanded longitudinal cross-section schematic diagram made into the floor structure which can heat by inserting a heat radiating unit in the grid-like rib space part of the washing-room floor surface of a bathroom. It is a 1st figure which shows the procedure which assembles the floor heating unit of Example 2. FIG. It is a 2nd figure which shows the procedure which assembles the floor heating unit of Example 2. FIG. It is a 3rd figure which shows the procedure which assembles the floor heating unit of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Expanded polystyrene board 2 Heat-medium tube embedding groove 3 Heat-medium tube 3a, 3b, 3c Exposed heat-medium tube 4 Aluminum foil 5 V-shaped groove 6 Notch part 7 Side face 8 Lattice vertical rib 9 Lattice horizontal rib 10 Bathroom washing place Floor surface 11 Floor heating unit 12a, 12b, 12c Heat radiation unit 13a, 13b Heat radiation unit (plural)
20 Thermal insulation (synthetic resin layer)
30 Heat insulation material (wedge-shaped member)

Claims (3)

Arranged on the lower surface side of the floor surface provided with grid-like ribs on the lower surface side,
Each of the two adjacent ribs formed in parallel to the one direction is formed so as to continuously bury the bowl-shaped concave portions arranged in the vertical and horizontal directions formed by the lattice-like ribs in one direction. A long foamed synthetic resin plate having two wall portions formed so as to face the inner surface, the two wall portions projecting downward from a rib in a direction perpendicular to the one direction;
A heat transfer pipe embedded in each of the two wall portions of the portion protruding below the rib;
In the two wall portions, a unit including a metal foil attached to the surface facing the inner surface of the parallel ribs as a unit of heat dissipation unit,
A floor heating unit in which the heat medium pipe communicates a plurality of the heat radiating units,
The floor heating unit, wherein the metal foil is covered with a heat insulating material at least at a portion where the wall portion protrudes and is exposed below the rib. 2. The floor according to claim 1, wherein the heat insulating material has a wedge shape in cross section so that the heat insulating material can be inserted between the rib and the metal foil attached to the wall portion. Heating unit. The long foamed synthetic resin plate is formed by forming two V-shaped grooves parallel to the longitudinal direction of the long flat plate and then bending the cross-sectionally U-shaped so as to close the grooves. The value of (AB) is approximately 90 degrees, where the opening angle of each V-shaped groove bottom is A degrees and the wedge-shaped tip angle of the heat insulating material is B degrees. Or the floor heating unit of 2.

Images