JP7622586B2 - Floor heating panel, its installation method and header - Google Patents

Description

The present invention relates to a floor heating panel. The present invention also relates to a method for installing a floor heating panel that connects the hot water piping of the floor heating panel to the main piping under the floor via a header. Furthermore, the present invention also relates to a header used in the floor heating panel.

A widely used floor heating panel has a base plate with a groove on the top surface for routing piping, through which hot water piping is routed. Floor heating panels for heating a large floor area are provided with multiple hot water pipes (multiple circuits).

For floor heating panels equipped with multiple hot water piping circuits like this, hot water from a boiler or the like is supplied from the main supply pipe to each hot water pipe via a branch header. The hot water drops in temperature as it flows through each hot water pipe, and returns to the boiler or the like from the end of the return hot water pipe via the branch header and the main return pipe, where it is heated again and sent out to the main supply pipe.

As a structure for connecting the main pipe installed under the floor with the hot water pipe of this floor heating panel, Patent Document 1 describes a structure in which a base plate is placed on the floor, the hot water pipe is guided by the base plate to the vicinity of the floor opening, and is connected to the main pipe via a branch header.

The base plate has a thick platen that fits into the floor opening, and the top surface of the thick platen is recessed. An opening is provided on the bottom surface of this recess.

To connect the main pipe to the branch header, the main pipe is passed from bottom to top through the opening in the recess of the base plate, and then the main pipe installation nozzle of the branch header is inserted into the upper end of the main pipe (Figures 15 and 16 of Patent Document 1).

JP 2013-228138 A

In Patent Document 1, when a floor heating panel is installed on a structural floor and connected to a main pipe, the floor heating panel is laid on the structural floor, and then the tip of the hot water pipe extending from the floor heating panel and the tip of the main pipe pulled out from under the floor are each connected to a branch header. At this time, the hot water pipe is removed from the groove of the floor heating panel because the vicinity of the tip of the hot water pipe is lifted upward. Therefore, after connecting the hot water pipe and the main pipe to the branch header, the hot water pipe is re-engaged (refitted) into the groove of the floor heating panel when the branch header is fitted into the opening of the base plate. However, because hot water pipes are highly rigid and there are a large number of them, it was time-consuming to refit each hot water pipe into the groove of the floor heating panel at the construction site.

The present invention aims to provide a floor heating panel that is easy to install on-site, and a method for installing the same. It also aims to provide a header that is suitable for use with this floor heating panel.

The gist of the present invention is as follows:

[1] A plurality of roughly rectangular substrates each having a groove for accommodating piping on its upper surface;
and a hot water pipe housed in the groove,
A floor heating panel in which a cutout portion is provided at a corner portion of the part of the substrate, and a guide plate is disposed in the cutout portion,
the guide plate is connected by a connecting member to a peripheral portion of the base plate facing the notch portion so as to be rotatable upward;
The hot water pipe extends from the edge of the base plate, is passed through a groove in the upper surface of the guide plate, and extends from the edge of the guide line opposite to the edge of the base plate,
A floor heating panel in which a header is connected to the end of the hot water piping extending from the side portion.

[2] The floor heating panel of [1], wherein the connecting member is a sheet material that spans the upper surface of the part of the substrate and the upper surface of the guide plate.

[3] The floor heating panel of [2], wherein the sheet material is an aluminum sheet or a laminate sheet of an aluminum sheet and a resin sheet.

[4] The header is a floor heating panel according to any one of [1] to [3], which has a header body, a hot water pipe connection nozzle protruding from the header body and into which the hot water pipe is inserted, and a main pipe connection nozzle protruding from the header body and inserted into the main pipe under the floor.

[5] The floor heating panel of [4], characterized in that at least one longitudinal end of the header body has a chamfered corner shape.

[6] The floor heating panel of [4], characterized in that at least one longitudinal end of the header body is shaped like a truncated cone.

[7] The header includes a hot water supply header and a hot water return header,
The floor heating panel according to any one of [1] to [6], characterized in that a buffer material is interposed between the hot water supply header and the hot water return header.

[8] The floor heating panel according to [7], wherein the cushioning material is a sponge-like sheet.

[9] A floor heating panel installation method comprising: installing the floor heating panel according to any one of [1] to [8] on a floor surface of a structural body; and connecting the header and the main piping through a floor hole provided in the structural body floor,
A step of laying the floor heating panel on the structural floor surface;
a step of rotating the guide plate upward and drawing the main pipe from under the floor to above the floor through the floor hole;
a step of connecting a branch header connected to the hot water piping to the main piping;
A step of returning the main pipe under the floor, placing the header in the floor hole, and laying the guide plate down on the structural floor;
and sealing the floor hole with a cover plate.

[10] A header body extending in one direction;
A header for a floor heating panel having a hot water piping connection nozzle and a main piping connection nozzle protruding from the header body,
The header is characterized in that a corner edge portion on at least one end side in the longitudinal direction of the header body is formed into a chamfered shape.

[11] A header body extending in one direction;
A header for a floor heating panel having a hot water piping connection nozzle and a main piping connection nozzle protruding from the header body,
A header for a floor heating panel, characterized in that at least one longitudinal end of the header body is shaped like a truncated cone with a diameter decreasing toward the tip.

In the floor heating panel of the present invention, a base plate having hot water piping and a guide plate with which the hot water piping extending from the base plate engages are connected by a connecting member. A branch header is connected to the hot water piping extending from the guide plate, so there is no need to connect the hot water piping to the branch header at the construction site.

When installing the floor heating panel of the present invention, after laying the floor heating panel on the structural floor, the guide plate can be rotated upward to sufficiently separate the branch header from the floor hole in the structural floor. This allows the main pipe to be easily pulled out from under the floor onto the floor and connected to the header. At this time, by raising the guide plate upward, preferably at an angle, the hot water pipe will not come out of the groove in the floor heating panel. This eliminates the need to refit the hot water pipe into the groove in the floor heating panel.

FIG. 2 is a plan view of the floor heating panel. FIG. 2 is an enlarged view of a portion of the floor heating panel of FIG. 1. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 3 is a plan view of the same part as in FIG. 2 during installation of the floor heating panel. This is a cross-sectional view near the floor hole showing the installation method of the floor heating panel. This is a cross-sectional view of the area near the floor hole after installation of the floor heating panel. FIG. FIG. FIG. FIG. XI-XI line cross-sectional view of FIG. 8. 10 is a cross-sectional view taken along line XII-XII in FIG. 8. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 8. FIG. 11 is a perspective view of a branch header according to another embodiment. 13 is a perspective view of an end portion of a branch header according to yet another embodiment. FIG. This is a plan view of the area around the floor hole during installation of the floor heating panel.

The following describes the embodiment with reference to the drawings.

In a floor heating system using the floor heating panel of the present invention, as shown in Figures 1 to 6, hot water from a boiler (not shown) is supplied to the supply side of the hot water pipe 14 of the floor heating panel 10 via the supply side main pipe 1 (Figures 5 and 6) and a header (branch header) 30, and the cooled hot water from the return side of the hot water pipe 14 is returned to the boiler via the branch header 40 and the return side main pipe 2 (Figures 5 and 6), where it is heated again and circulated. First, the floor heating panel 10 will be described with reference to Figure 1.

[Explanation of floor heating panel]
This floor heating panel 10 is configured with multiple, roughly rectangular base plates 11 and multiple small joists 12 arranged alternately with their longitudinal directions parallel to each other, and hot water piping 14 is routed through grooves for piping formed on the upper surface of each base plate 11. A heat spreader sheet (not shown) is attached to the upper surface of the base plate 11.

In this embodiment, the floor heating panel 10 has three hot water pipes 14 arranged in total, forming a triple hot water circulation pipe configuration. The hot water pipes 14 are arranged continuously from one adjacent board 11 to the other board 11.

A corner of one of the base plates 11A has an L-shaped cutout 15, and a guide plate 16 for guiding the hot water pipes 14 is disposed within this cutout 15. As shown in Figures 4 to 6, a floor hole 3 with a diameter of about 50 to 150 mm is provided in the structural floor 4 of the room of the building, and a base plate 20 is installed so as to overlap this floor hole 3. As will be described in detail later, branch headers 30, 40 are disposed behind this base plate 20, and the ends of each hot water pipe 14 are connected to the hot water pipe connection nozzles 33, 43 of each branch header 30, 40.

[Explanation of the guide plate]
2 to 5, the guide plate 16 is a rectangular plate, and has six grooves 16a on the upper surface into which the hot water pipes 14 engage. One side 16f of the guide plate 16 (the right side in FIGS. 2 and 4) is butted against the peripheral edge 11f of the cutout portion 15 of the base plate 11A.

The guide plate 16 is connected to the substrate 11A so that it can be raised and lowered in the vertical direction as indicated by the arrow θ, with the butt joint between the edge 11f and one side 16f as the center of rotation, as shown in Figure 3. Examples of the means for rotation include fitting the edge of the substrate and the side of the guide plate to enable rotation.

As another example, in FIG. 3, a sheet material 16s (FIG. 3) is attached continuously from the top surface of the guide plate 16 to the top surface of the substrate 11A, straddling the side portion 16f and the peripheral portion 11f.

The sheet material 16s has a bendable material and thickness, so that the guide plate 16 is connected to the substrate 11A so that it can be raised and lowered in the vertical direction as indicated by the arrow θ, with the butt joint between the edge portion 11f and one side portion 16f as the rotation center, as shown in FIG. 3. The material of the sheet material is not particularly limited, and examples include resin sheets, wood sheets, nonwoven fabrics, woven fabrics, and metal sheets. Among these, aluminum sheets or laminate sheets of aluminum sheets and resin sheets are preferred.

[Base plate description]
8 to 13, the base plate 20 is in the shape of a substantially rectangular plate, and both ends in the longitudinal direction, i.e., the direction perpendicular to the hot water pipe extension direction (left and right direction in FIG. 1), are thin plate sections 21 (FIG. 10), and a thick plate section 23 is provided near the center in the longitudinal direction. Note that, as shown in FIG. 9, the top surface of the rear edge of the base plate 20 is lower than the top surface of the front edge by the thickness of a cover plate 46 described below.

The thick plate portion 23 has a wide groove-like recess 24 recessed from the top surface. The bottom surface 24a of this recess 24 slopes downward toward the rear edge of the base plate 20 (the edge on the left side in Figs. 8 and 9).

Five partition walls 28 extending in the front-rear direction are provided on the bottom surface 24a of the recess 24, which define six hot water pipe engagement slits 27. The arrangement pitch of the slits 27 is the same as the arrangement pitch of the hot water pipes 14 extending from the guide plate 16.

The base plate 20 has screw holes 29 for fastening the base plate 20 to the floor 4.

[Branch Header Description]
As shown in Figure 7, the branch headers 30, 40 each include a rectangular parallelepiped header body 31, 41, a main pipe connection nozzle 32, 42 protruding downward from the bottom surface of the header body 31, 41, and a hot water pipe connection nozzle 33, 43 protruding laterally from one longitudinal side surface of the header body 31, 41.

The branch headers 30, 40 are delivered to the construction site in a state where they are pre-connected to the hot water pipes 14 of the floor heating panel 10 at the floor heating panel manufacturing factory. In order to prevent the headers 30, 40 from contacting each other, it is preferable to interpose a cushioning material 39 made of a sponge-like sheet between the headers 30, 40.

[Installation procedure for floor heating panel 10]
The floor heating panels are deployed and placed at predetermined positions on the floor 4 of the building.

Before or after placing the floor heating panel 10, a floor hole 3 is drilled in the floor 4 to match the position of the cutout portion 15.

As shown in Figure 5, the guide plate 16 is raised obliquely upward, preferably at an angle of about 20 to 45 degrees, and the headers 30, 40 are spaced sufficiently above the floor hole 13. In this state, the main pipes 1, 2 under the floor are pulled out onto the floor through this floor hole 3. The main pipes 1, 2 are then attached to the main pipe connection nozzles 32, 42 of the branch headers 30, 40 and tightened with bands (not shown).

Next, the thick plate portion 23 of the base plate 20 is inserted into the floor hole 3, and the thin plate portion 21 is placed on the floor 4. Then, while returning the main pipes 1 and 2 to the underside of the floor 4, the guide plate 16 is laid down onto the structural floor 4, the hot water pipes 14 are engaged with the slits 27 and recesses 24, and the branch headers 30 and 40 are placed in the floor hole 3. The hot water pipes 14 connected to the branch header 30 are engaged with the even-numbered slits 27 from the top of Figure 8. The hot water pipes 14 connected to the branch header 40 are engaged with the odd-numbered slits 27 from the top of Figure 8.

At this time, it is preferable to position the header bodies 31, 41 of the branch headers 30, 40 in the floor hole 3 and insert the hot water pipe connection nozzle 33 of the branch header 30 into the recess 24. It is also preferable to position the hot water pipe connection nozzle 43 of the branch header 40 above the header body 31 of the branch header 30.

Next, the base plate 20 is fixed to the floor 4 by screwing a screw (not shown) into the floor 4 through the screw insertion hole 29. After that, as shown in FIG. 6, a cover plate 46 is placed to cover the floor hole 3, and the cover plate 46 is fixed to the floor 4 with a screw. In this embodiment, the left-right width of the cover plate 46 is approximately equal to the left-right width of the base plate 20. In this embodiment, the front edge of the cover plate 46 overlaps the rear edge of the base plate 20, but the two may be butted together without overlapping.

In this floor heating panel installation method, the main pipes 1, 2 are pulled out onto the floor through the floor hole 3 with the guide plate 16 standing at an angle, and the branch headers 30, 40 are connected to the main pipes 1, 2, so the branch headers 30, 40 can be easily connected to the main pipes 1, 2 without making the floor hole 3 larger. Also, even if the guide plate 16 is standing at an angle upward when connecting the hot water pipes 14 to the branch headers 30, 40, the hot water pipes 14 do not come out of the grooves of the floor heating panel or the grooves 16a of the guide plate 16, so there is no need to refit the hot water pipes 14 into the grooves.

The present invention is thin, with a thickness of 5 mm to 9 mm, for example 5.5 mm, and is suitable for connecting the hot water piping of a large-area floor heating panel with two or more circuits (two pipes) of hot water piping (for example, 2 to 10 circuits) to the main piping.

[Examples of different header shapes]
In the above embodiment, the header body 31, 41 of the header 30, 40 has a rectangular parallelepiped shape, but as shown in Fig. 14, at least one end, preferably both ends, of the header body 31, 41 in the longitudinal direction may have a corner-dropped shape (chamfered shape) at the rear edge (the corner edge where the side opposite to the protruding direction of the hot water pipe connection nozzle 33, 43 intersects with the end face of the header body 31, 41). Preferably, the corner edge is made to have a rounded shape. This makes it easier to place the header 30, 40 in the floor hole 3. Note that not only the rear edge but also the front edge may have a corner-dropped shape (chamfered shape).

Instead of making the corners chamfered, the longitudinal ends of the header bodies 31, 41 can be made into a truncated cone shape with a smaller diameter toward the tip, as shown in Figure 15, to achieve the same effect. Cutting into a truncated cone shape can be done relatively easily using a lathe.

[Another positional relationship between floor hole and guide plate]
In Figure 4, the other side of the guide plate 16 (the side opposite to one side 16f) protrudes over the floor hole 3, but the other side may be positioned away from the floor hole 3 as shown in Figure 16.

[Another form]
The above embodiment is one example of the present invention. The present invention may be embodied in other forms. For example, the supply main pipe may be connected to the branch header 40, and the return main pipe may be connected to the branch header 30.

REFERENCE SIGNS LIST 1, 2 Main pipe 3 Floor hole 4 Floor 10 Floor heating panel 14 Hot water pipe 15 Cutout portion 16 Guide plate 16a Groove 16s Sheet material 20 Base plate 21 Thin plate portion 23 Thick plate portion 24 Recess 24a Bottom surface of recess 27 Slit 28 Partition wall 30, 40 Branch header 31, 41 Header body 32, 42 Main pipe connection nozzle 33, 43 Hot water pipe connection nozzle 39 Cushioning material 46 Cover plate

Claims (9)

A plurality of substantially rectangular substrates each having a groove for accommodating piping on an upper surface thereof;
and a hot water pipe housed in the groove,
A floor heating panel in which a cutout is provided at a corner portion of a part of the substrate, and a guide plate is disposed in the cutout,
the guide plate is connected by a connecting member to a peripheral portion of the base plate facing the notch portion so as to be rotatable upward;
The hot water pipe extends from the edge of the base plate, is passed through a groove in the upper surface of the guide plate, and extends from an edge of the guide plate opposite to the edge of the base plate,
A floor heating panel in which a header is connected to the end of the hot water piping extending from the side portion. The floor heating panel of claim 1, characterized in that the connecting member is a sheet material that spans the upper surface of the part of the substrate and the upper surface of the guide plate. The floor heating panel of claim 2, wherein the sheet material is an aluminum sheet or a laminate sheet of an aluminum sheet and a resin sheet. A floor heating panel according to any one of claims 1 to 3, wherein the header has a header body, a hot water pipe connection nozzle protruding from the header body and into which the hot water pipe is inserted, and a main pipe connection nozzle protruding from the header body and inserted into the main pipe under the floor. The floor heating panel of claim 4, characterized in that at least one end of the header body in the longitudinal direction is beveled. The floor heating panel of claim 4, characterized in that at least one end of the header body in the longitudinal direction is shaped like a truncated cone. As the header, a header on a hot water supply side and a header on a hot water return side are provided,
7. The floor heating panel according to claim 1, wherein a buffer material is interposed between the hot water supply header and the hot water return header. The floor heating panel of claim 7, wherein the cushioning material is a sponge-like sheet. A method for installing a floor heating panel according to any one of claims 1 to 8 on a floor surface of a structural body, and connecting the header and a main pipe through a floor hole provided in the structural body floor,
A step of laying the floor heating panel on the structural floor surface;
a step of rotating the guide plate upward and drawing the main pipe from under the floor to above the floor through the floor hole;
a step of connecting a branch header connected to the hot water piping to the main piping;
A step of returning the main pipe under the floor, placing the header in the floor hole, and laying the guide plate down on the structural floor;
and sealing the floor hole with a cover plate.

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