JP2003329256A - Floor heating panel heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin and rigid floor heating panel heater receiving no influence of thermal expansion and facilitating construction. <P>SOLUTION: This floor heating panel heater comprises a metallic panel body 1 having a storing portion 2 opening upwardly, a heater unit 4 arranged in the storing portion 2 of the panel body 1, a metallic frame element 30 having a reinforcing frame portion 31 arranged along the peripheral portion of the panel body 1, and a platy metallic cover plate 5 covering the storing portion 2 while sandwiching a frame 30. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a panel heater for floor heating.

[0002]

2. Description of the Related Art Conventional underfloor heating equipment is a type in which an underfloor beam member (joist member) is assembled on a base material, and a heater and a heat insulating material are incorporated between the underfloor beam members at a construction site. was there. Further, in recent years, there has been one in which a heater and a heat insulating material are unitized into a panel-shaped heater, and at the construction site, the panel heater is laid on the floor and a flooring material or the like is placed thereon as a finishing material. Further, this conventional panel heater includes one in which a linear heater is arranged in a steel plate housing and foamed plastic such as urethane is injected, or one in which a linear heater is provided in a steel plate outer frame body. Are known. The conventional panel heater is fixed to the base material by fixing means such as nails or screws at the peripheral portion of the panel heater.

[0003]

Since the conventional panel heater is firmly fixed to the base material and the casing and the exterior frame are made of metal, the panel heater is heated by the heater as shown in FIG. The entire heater 40 expands and swells upwards
There was a gap between the 42 and 42, which was a cause of poor finish. Alternatively, the entire panel heater has an adhesive structure so as to be completely integrated to prevent swelling. However, the whole panel heater is warped as shown in FIG.
Since heating and resting are repeated, the upper plate 43 of the panel heater 40 separates from the internal heater unit 44 as shown in FIG. 7, and the upper plate 43 swells upward, creating a gap.

Therefore, the present invention is not affected by thermal expansion,
Moreover, it is an object of the present invention to provide a panel heater for floor heating which is thin and has rigidity and is easy to install.

[0005]

In order to achieve the above-mentioned object, a floor heating panel heater according to the present invention includes a metal panel main body having an upper opening-shaped storage portion, and the storage portion of the panel main body. , A metal frame body having a reinforcing frame portion arranged along the peripheral edge of the panel body, and a flat plate-shaped metal for covering the storage portion with the frame body sandwiched therebetween. And a lid-making plate. Further, a plurality of small joist members are arranged in the storage section of the panel body, and the panel body is fixed to the base material via the small joist members,
The lid plate is attached to the small joist member so as to be capable of minute movement so as to absorb the difference in thermal expansion. Further, the fixing of the panel body to the base material is attached to the base material so as to be finely movable so as to absorb the difference in thermal expansion. Further, the heater unit includes an upper heating element and a lower heat insulating layer.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the illustrated embodiments.

FIG. 1 is a partially broken plan view showing an embodiment of a floor heating panel heater of the present invention, and FIG. 2 is an exploded perspective view of the floor heating panel heater. This panel heater is a rectangular panel structure that is laid on a base material, and a plurality of sheets are vertically and horizontally arranged side by side to form a wide planar underfloor material. Is a panel heater for laid floor heating.

As shown in FIG. 2, this floor heating panel heater has a metal panel body 1 having a storage portion 2 having an upper opening, and a plurality of joist members 3 arranged in the storage portion 2.
And a heater unit 4 arranged between the small joist members 3 and 3.
And a metal frame body 30 having a reinforcing frame portion 31 having an L-shaped cross section arranged along the peripheral portion of the panel body 1, and a flat metal plate body for covering the storage portion 2 with the frame body 30 interposed therebetween. The cover plate 5 and the cover plate 5 are assembled as one body at the factory.

The panel body 1 is an outer bottom member in the shape of a rectangular shallow dish, and is provided with a flat bottom wall member 8 and a side wall member 9 standing on the edge of the bottom wall member 8. In
The short side walls 9a and 9 are provided on both the short side and the long side, respectively.
It has a and long side wall portions 9b and 9b. The space surrounded by the bottom wall member 8 and the side wall member 9 serves as the storage unit 2.

FIG. 3 is a cross-sectional view of the panel heater. The small joist member 3 is a long beam member having a quadrangular cross section, and has a height slightly larger than the depth dimension of the storage portion 2 of the panel body 1. Have dimensions. That is, the upper surface of the small joist member 3 arranged in the storage section 2 is projected from the upper surface of the side wall member 9 of the panel body 1, and the small joist member 3 covers the storage section 2 with the lid plate 5.
And a lid recessed portion 27, which will be described later, has a contact shape. Therefore,
The lid plate 5 is supported in the vertical direction (thickness direction) by the small joist member 3, and the load acting on the upper surface of the lid plate 5 acts on the small joist member 3. Further, the material of the small joist member 3 is made of resin, wood, or the like, and both are lightweight and have a certain degree of rigidity.

A plurality of the small joist members 3 are arranged side by side with the longitudinal direction thereof aligned with the longitudinal direction of the accommodating portion 2. In FIGS. 1 and 2, on both sides of the long side of the accommodating portion 2. Two of them are arranged between them. Then, the arrangement pitches in the direction along the short sides are made equal. In addition, the side surfaces of the small joist members 3 and 3 along both sides of the long side of the storage portion 2 have long side wall portions 9b and 9b.
It is arranged so as to contact the surface b with no gap.

The number of the small joist members 3 fixed so as to match the longitudinal direction of the storage portion 2 is four in FIGS. 1 and 2, but the number can be changed according to the size of the panel heater. There is no limit. Further, the small joist member 3 is arranged so as to be in surface contact with one side of the short side wall portion 9a. Therefore, the small joist member 3 is fixed to the panel body 1 in a frame shape along the side wall members 9 on three sides, and the inside of the frame is made up of a plurality of storage parts 2 (2) by the two small joist members 3 and 3. The area is divided into small spaces. That is, storage part 2
A plurality of elongated small spaces 11 are formed by the small joist member 3.

Although not shown in the drawings, the small joist member 3 is fixed to the housing portion 2 of the panel body 1 along the side wall member 9 as a four-sided frame, and the two small joist members 3 are arranged inside the frame. It may be provided and partitioned into the small space portion 11. However, in the present invention, as shown in FIG. 2, the wiring duct concave groove 17 described later is formed on one of the short sides of the frame body 30, and the side wall of the concave groove 17 acts as a stiffening rib. To increase the rigidity of the body 30,
The small joist member 3 corresponding to this position can be omitted.

Explaining the frame body 30, the frame body 30 is a rectangular stiffening member corresponding to the contour shape of the panel body 1, and is configured to be fitted onto the panel body 1. Frame 30
Is a plurality of cross-sections that connect a pair of reinforcing frame portions 31, 31 facing each other (facing) with a reinforcing frame portion 31 having an L-shaped cross section arranged along the peripheral edge portion (4 sides) of the panel body 1. Flat auxiliary reinforcement
32 and. Incidentally, in FIG. 2, the auxiliary reinforcing portion 32
Is two and is connected to the reinforcing frame portions 31, 31 arranged on the short side of the panel body 1, and the frame body 30 has a plurality of opening windows 33 ...
To form. The reinforcement frame portion 31 and the auxiliary reinforcement portion 32 are arranged along the small joist member 3. As a result, the heater unit 4 can come into contact with the lid plate 5. Further, since the cross section of the panel main body 1 is also L-shaped at the peripheral portion thereof, the panel main body 1 and the frame body 30 can improve the rigidity of the thin and high-area panel heater.

A wiring duct for accommodating the lead wire 12 of the heater unit 4 which will be described later is provided on one side of the frame body 30 on the short side and leads the lead wire 12 out of the panel heater as shown in FIG. The groove 17 is formed (see FIG. 2). As a result, the lead wires 12 of the plurality of heater units 4 can be bundled and wired in a collective state, which facilitates the manufacture of the panel heater and facilitates the work even when maintenance is required later. You can The groove 17 is covered by a plate-shaped duct cover plate 18, and the duct cover plate 18 is flush with the upper surface of the cover plate 5 and can form one flat surface. The duct cover plate 18 is screwed to the frame body 30 with screws or the like.

Explaining the lid plate 5, the lid plate 5 covers the storage portion 2 of the panel body 1 from the upper surface of the frame body 30 to form a lid-like shape (excluding the above-mentioned concave groove portion 17). It has a rectangular shape that substantially matches the outer shape of the body 30. The cover plate 5 is a rectangular plate member having a thin cross section in both the vertical and horizontal directions and is a single plate member.

The panel body 1, the frame body 30 and the lid plate 5 are made of metal and are made of galvanized steel plate or stainless steel plate, and the plate thickness of the steel plate used in the panel body 1 is about 0.
The plate thickness of the steel plate used for the frame body 30 and the cover plate 5 is about 0.8 mm. Furthermore, the vertical and horizontal dimensions of the assembled panel heater are approximately 1800 mm in the vertical dimension (long side) and 900 mm in the horizontal dimension (short side). The vertical and horizontal dimensions of the panel heater can be freely changed and there is no limitation. 1 and 2, the plate thickness of the steel plate is expressed thicker than it actually is. The thickness of the assembled panel heater is set to about 8 mm to 16 mm. Preferably about 10 mm to 13 mm
And As a result, the panel heater can be made thin and the heat insulating effect is not impaired.

The heater unit 4 will be described. As shown in FIGS. 2 and 3, the heater unit 4 includes an upper planar heating element 6 and a lower heat insulating layer which are arranged between the small joist members 3, 3. 7 and 7. That is, the heater unit 4 is
The sheet heating element 6 is attached to the upper surface of the heat insulating layer 7, and is disposed in the small space portion 11 described above. The heater unit 4 is a long rectangular parallelepiped having a thin rectangular cross section. The heating element 6 may be composed of a plurality of linear heating elements 6.

The heating element 6 is a thin heater which has a rectangular shape in plan view and generates heat when energized. In the case of the planar heating element 6, there are electrodes on both sides along the longitudinal direction of the heating element 6, and heat is generated between the electrodes. Have members. The lead wire 12 shown in FIG. 2 is connected to this electrode. Further, as shown in FIG. 1, an excessive temperature rise preventive device 13 is provided on the lower surface side of the planar heating element 6, and when excessive heat is generated, energization can be stopped and it is safe. Further, although the heating element 6 is not shown,
Equipped with a temperature sensor for adjusting the floor heating temperature, the floor heating temperature can be set freely. The heat insulating layer 7 is provided with a space recess 14 for accommodating the excessive temperature rise prevention device 13 and the temperature sensor. Further, the planar heating element 6 has a size that substantially corresponds to the dimension between the small joist members 3 and 3 (small space portion 11) in a plan view, and can generate heat uniformly over a wide area.

The heat insulating layer 7 is a heat insulating member made of foamed plastic such as urethane or styrene, and has excellent moldability and heat insulating effect. Furthermore, this heat insulation layer 7
Are configured to be closely attached to the small joist member 3. Therefore, the heater unit 4 is arranged in a tight fit on the small joist members 3 and 3.

Further, in the heater unit 4, as shown in FIG. 3, an insulating sheet 15 is laminated on the upper surface of the heating element 6. The insulating sheet 15 is a thin sheet member that covers the entire surface of the heating element 6, and is made of a resin such as polypropylene. Since the heating element 6 is in surface contact with the lid plate 5 via the insulating sheet 15, the heat efficiency is improved, and even if the lid plate 5 of the floor heating panel heater is made of a steel plate, it can be safely used. Becomes

Next, the attachment of the floor heating panel heater to the base material will be described. As shown in FIG. 3, the panel heater is fixed to the base material F by fixing means such as bolts and nails. As shown in the side sectional views of the main part of the panel heater in FIGS. , The panel body 1 is a small joist member 3
It is fixed to the base material F by the main body fixing means 21 such as a nail or a screw (screw) via, and the lid plate 5 is attached to the small joist member 3 so as to be capable of minute movement so as to absorb the difference in thermal expansion.

More specifically, as shown in FIG.
The small joist member 3 is disposed in the storage portion 2 of the panel body 1, and the upper surface of the small joist member 3 has one surface (back surface) of the frame body 30.
Are arranged so as to come into contact with each other, and the lid plate 5 covers the storage portion 2. A through-hole-shaped window portion 23 is formed in the cover plate 5, and a second window portion 34 is formed on one surface of the frame body 30 below the window portion 23. Joist member 3
A small concave portion 24 is formed in the. A first through hole 25 penetrating the upper surface and the lower surface of the small joist member 3 is provided at the center of the small recessed portion 24, and the bottom wall member 8 of the panel body 1 corresponding to the first through hole 25.
A penetrating second through hole 26 is formed in the. That is, the panel heater has a through-hole shape from the upper surface to the lower surface. It should be noted that the first window portion 23 of the lid plate 5 is provided at a plurality of locations along the upper surface of the joist member 3, as shown in FIGS. 1 and 2.

Therefore, when the main body fixing means 21 is described as a screw member, as shown in FIG. 4, the screw member is inserted from a position above the first window portion 23 so that the first window portion 23 and the second window portion 34 are inserted. The head portion (locking bulging portion) 21a of the screw member comes into contact with the bottom surface 24a of the small recessed portion 24, and the screw portion (insertion portion) 21b of the screw member is passed through the first and second through holes 25. 、 26 becomes the insertion state,
The tip portion of the screw portion 21b is screwed (inserted) into the base material F, so that the panel body 1 (panel heater in the assembled state) has the base material F.
Fixed to. It should be noted that the first and second window portions 2 in plan view
3 and 34 are set to be larger than the small recessed portion 24.

On the other hand, as shown in FIG. 5, a horizontal flat cover plate 5
A concave recess 27 is formed in the lid, the surface of which has a stepped shape. The bottom surface 27a of the lid recessed portion 27 has a horizontal surface, and the bottom surface 27a
A penetrating lid through hole 28 is formed in the central portion of the. Then, as shown in FIGS. 1 and 2, the lid recessed portions 27 are also provided at a plurality of positions along the upper surface of the joist member 3. Further, the lid recessed concave portion 27 has a convex shape on the lower surface of the lid plate 5 (on the side of the small joist member 3), and the lower surface (back surface) 27b of the lid recessed concave portion 27b.
Has a through hole 35 formed in the frame body 30 so as to come into contact with the upper surface of the small joist member 3.

A lid fixing means such as a nail or a screw (screw)
Reference numeral 22 denotes a lid through hole 28 of the lid concave recess 27, and further, a small joist member 3
And the lid fixing means 22 is fixed to the joist member 3. To further explain the lid fixing means 22 as a screw member, the bottom surface 27a of the lid recessed portion 27 has an area sufficiently larger than the contour (outer diameter) of the head portion (locking bulging portion) 22a of the screw member,
The lid through hole 28 has a hole diameter that is sufficiently larger than the outer diameter of the screw portion (insertion portion) 22b of the screw member and smaller than the contour (outer diameter) of the head portion 22a. Further, this screw member is fixed so as not to slip out of the small joist member 3 and to prevent the lid plate 5 from being over-tightened. That is, when a horizontal load is applied to the lid plate 5, the lid recessed concave portion 27 of the lid plate 5 is fixed to the joist member 3 so as to be slidably movable with respect to the panel body 1. That is, the lid plate 5 can freely expand and contract due to heat against the frictional force between the screw member and the small joist member 3.

Therefore, even if the cover plate 5 expands due to the heat of the heater unit 4, the cover plate 5 is not restricted by the panel body 1 in the horizontal direction--the head 22a can slide on the bottom surface 27a--. Therefore, the lid plate 5 can be expanded and contracted in the horizontal direction.
Further, since the depth of the lid recessed portion 27 is set deeper than the height of the head portion 22a of the screw member, the head portion 22a does not protrude from the uppermost surface of the lid plate 5, which hinders the laying of the finishing material. Will not cause Further, since the lid recessed portion 27 and the lid through hole 28 are circular, there are gaps G ₁ and G ₂ over the entire circumference, and the difference in heat shrinkage can be absorbed in the horizontal two-dimensional direction. Further, the peripheral edge of the cover plate 5 is not L-shaped in cross section like the panel body 1 and the frame body 30, but is only a flat plate over the entire surface, so that local thermal deformation does not occur and this thermal contraction does not occur. Easy to be absorbed.

Referring back to FIG. 4, the panel body 1 may be fixed to the base material F by minute movement so as to absorb the difference in thermal expansion. That is, the bottom surface 24 a of the small concave portion 24 of the small joist member 3 is horizontal and has an area sufficiently larger than the contour (outer diameter) of the head portion 21 a of the screw member 21, and the first and second through holes 25 , 26 are screw parts of the screw member 21.
It has a hole diameter sufficiently larger than the outer diameter of 21b. further,
The first through hole 25 has a smaller hole diameter than the contour (outer diameter) of the head portion 21a. Therefore, even if the panel body 1 expands in the horizontal direction by the heat of the heater unit 4, the panel member 1 and the small joist member 3 are not restricted by the base material F in the horizontal direction--the head 21a slides on the bottom surface 24a. Therefore, the panel body 1 can be expanded and contracted in the horizontal direction. further,
Since the small recessed portion 24 and the first and second through holes 25, 26 are circular, there are gaps G ₃ , G ₄ , G ₅ over the entire circumference, and the horizontal 2
The difference in heat shrinkage can be absorbed in the dimension. That is, the panel body 1
Resists the frictional force between the screw member 21 and the base material F, and can freely expand and contract due to heat.

Further, as shown in FIG. 1, the cover plate 5 is formed with a plurality of concave grooves 29 ... As a result, when the cover plate 5 expands due to the heat of the heater unit 4, even if the cover plate 5 is constrained in the horizontal direction with respect to the panel body 1, the concave groove 29 moves downward (toward the heater unit 4). Since the arc is preliminarily formed, the expansion of the lid plate 5 is caused by the concave groove.
At 29, the cover plate 5 acts in the direction of inflating it downward.
That is, the cover plate 5 presses the heater unit 4 and does not float up from the panel body 1.

Although not shown, the floor heating panel heaters are arranged vertically and horizontally on the base material F at the time of construction, but they are laid with a cushioning material (elastic member) between adjacent panel heaters. The upper surface is sealed with an adhesive tape member. As a result, even if the cover plate 5 thermally expands, it does not affect the adjacent panel heater. Further, an adhesive is used in laying the finishing material, but the adhesive adheres to the cushioning material or adheres to the panel heater. The agent does not enter, and the expansion and contraction absorbing function of the panel heater itself is not lost.

Since the floor heating panel heater as described above does not have a strong adhesive portion between the constituent members as compared with the conventional foam plastic injection type, for example, the heater is removed from a structure aged after installation. There is an advantage that the disassembling and separating property is excellent when disassembling.

[0032]

The present invention has the following effects due to the above configuration.

(According to the first aspect) By using the panel body of the integral body, the workability at the installation site is improved and the work can be performed in a short period of time. A metal frame 30 is provided,
Since the rigidity of the panel heater is increased in cooperation with the panel body 1, a wide-area panel heater can be manufactured. Therefore, workability is improved because handling such as carry-in and installation is further facilitated.

(According to the second aspect) Even if the cover plate 5 is thermally expanded by the heating of the heater unit 4, the cover plate 5 is not thermally stressed or deformed, and the panel body 1 is
Can be firmly fixed to the base material F. Furthermore, since the lid plate 5 and the panel body 1 are separated and independent, the influence of thermal expansion of the lid plate 5 hardly acts on the panel body 1. Therefore, a bulge does not occur between the panel heater and the finishing material laid on the panel heater, and no gap is generated. This makes it possible to obtain a floor heating panel heater that does not affect the finish and has high thermal efficiency for many years.

Since the panel body 1 does not float up from the base material F due to expansion (according to claim 3), swelling occurs between the panel main body 1 and the finishing material laid on the panel heater to form a gap. There is no. Therefore, it is possible to obtain a panel heater for floor heating with even higher thermal efficiency for many years.

(According to claim 4) The heat of the heater unit 4 is efficiently transmitted to the cover plate 5 on the finishing material side, and further,
Since the heat is not transmitted to the lower surface side, heating of the panel body 1 can be suppressed and the panel heater can be firmly fixed to the base material F.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of a floor heating panel heater of the present invention.

FIG. 2 is an exploded perspective view of a floor heating panel heater of the present invention.

FIG. 3 is a side sectional view of a panel heater for floor heating.

FIG. 4 is a cross-sectional view of a main part of a floor heating panel heater.

FIG. 5 is a cross-sectional view of an essential part of a panel heater for floor heating.

FIG. 6 is a side view of a conventional floor heating panel heater.

FIG. 7 is a side view of a conventional floor heating panel heater.

[Explanation of symbols]

1 panel body 2 storage 3 small joists 4 heater unit 5 lid plate 6 heating element 7 heat insulation layer 30 frame 31 Reinforcing frame F Base material

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E220 AA04 AA12 AA35 AB09 DA19                       DB05 EA11                 3L072 AA01 AB03 AC02 AD04 AD19

Claims (4)

[Claims] 1. A metal panel main body 1 having an upper opening-shaped storage portion 2, a heater unit 4 arranged in the storage portion 2 of the panel main body 1, and a peripheral portion of the panel main body 1. A floor including a metal frame body 30 having a reinforcing frame portion 31 arranged therein, and a flat metal lid plate 5 for covering the storage portion 2 with the frame body 30 interposed therebetween. Panel heater for heating. 2. A plurality of small joist members 3 are arranged in the storage portion 2 of the panel body 1, the panel body 1 is fixed to the base material F through the small joist members 3, and the lid plate is provided. The panel heater for floor heating according to claim 1, wherein 5 is attached to the small joist member 3 so as to be capable of minute movement so as to absorb the difference in thermal expansion. 3. The floor heating panel according to claim 2, wherein the fixing of the panel body 1 to the base material F is attached to the base material F so as to be capable of minute movement so as to absorb the difference in thermal expansion. heater. 4. The heater unit 4 comprises an upper heating element 6 and a lower heat insulating layer 7, 2.
The panel heater for floor heating described.