JPH0141889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an improvement in a floor heating installation method by casting on site.

(Conventional technology) Among the many heating systems available, floor heating systems have traditionally been considered an ideal heating method for keeping your head cold and your feet warm, but the installation method is complicated and takes a long time. Partly because of the high cost of equipment, its penetration rate was quite low.

The inventor of the present invention has paid attention to the advantages of underfloor heating systems and their construction disadvantages, and as a result of research on methods and means for eliminating these disadvantages and effectively utilizing only the advantages, the inventor has developed a lightweight foamed synthetic resin A heat dissipation tube for passing hot water to dissipate heat is spread over the heat insulating layer formed by laying a plate-shaped heat insulating member for forming a heat insulating layer on the upper surface of the floor subfloor, and a wire mesh is placed above the heat dissipating tube.
We came up with a heating floor structure called Utility Application No. 164777 (1983) (Utility Model Application No. 80480) in which the wire mesh and heat dissipation tube were embedded in a layer of mortar, but as a result of further investigation, A floor heating method in which a groove for arranging a heat dissipation tube is provided on the surface side of the plate-shaped heat insulating member, the heat dissipation tube is arranged and laid in the groove, a wire mesh is stretched above the heat dissipation tube, and the wire mesh and the heat dissipation tube are embedded in a layer of mortar. Structure ``Jitsugan No. 1985-10905 (Jitsukaisho
No. 56-112490). This improved idea was to greatly simplify the installation of the heat dissipation tubes by preparing three types of plate-shaped heat insulating members with different shapes of heat dissipation tube grooves. Since then, the underfloor heating structure, which has been improved before and after construction in various locations, has very excellent advantages, has been praised for its simplicity in the construction process, and has been well received for its uniform heating effect. On the other hand, it is impossible to finish the top surface of the floor base with a plastering trowel to create a completely horizontal surface, so the contact between the bottom surface of the board-shaped insulation member and the top surface of the floor base is at three points. When a load is applied to the upper surface of the heated floor, the contact area of the plate-shaped heat insulating member is partially compressed and deformed, causing the finished floor surface to sink.

(Problems to be Solved by the Invention) Although the present invention uses a plate-shaped heat insulating member for forming a heat insulating layer, such as one made of lightweight foamed synthetic resin with low hardness, it can withstand large loads and last for a long period of time. The object of the present invention is to provide a floor heating construction method that can construct a floor heating structure in a short time without causing sinking of the heating floor surface due to sagging or fading of the plate-shaped heat insulating member.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has conventionally adopted a mortar layer that wraps around a wire mesh and a heat dissipation tube, and a large number of plate-shaped heat insulating members on the upper surface of a flat subfloor. Instead of being supported by a heat insulating layer formed by laying on the floor, mortar legs that penetrate the board-shaped heat insulating member and reach the upper surface of the subfloor are integrated with the mortar layer when forming the mortar layer. This prevents any load from being applied to the plate-shaped heat insulating member. That is, the floor heating installation method of the present invention is as follows:
(A) Made of lightweight foamed synthetic resin, etc., with grooves for arranging heat dissipation tubes formed on the front side, and a number of through holes for forming mortar legs penetrating from the front side to the back side at appropriate intervals. A plurality of plate-shaped heat-insulating members for forming a heat-insulating layer are laid on the upper surface of the flooring so that the grooves for arranging heat dissipation tubes formed in each plate-like heat-insulating member are continuous, thereby forming a heat-insulating layer. 1 step, (B) a second step of arranging and laying the heat radiating tube in a series of heat radiating tube grooves formed in the first step, and (C) a second step of laying the heat radiating tube in the series of grooves for arranging the heat radiating tube formed in the first step; a third step of stretching a wire mesh above the heat dissipation tube; and (D) pouring mortar over the stretched wire mesh to form a mortar layer that wraps the wire mesh and the heat dissipation tube; The present invention is characterized by comprising a fourth step of pouring a portion of the mortar into the mortar leg forming through holes to form mortar legs reaching the upper surface of the floor base integrally with the mortar layer.

(Function) According to the floor heating construction method of the present invention, the mortar layer surrounding the wire mesh and the heat dissipation tube is covered with mortar legs that penetrate the plate-shaped heat insulating member laid on the upper surface of the floor base and reach the upper surface of the floor base. A supporting floor heating structure is obtained. Then, the load applied to the mortar layer is applied to the subfloor via the mortar legs, and the load is no longer applied to the plate-shaped heat insulating member.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

The drawings are explanatory diagrams of the floor heating construction method of the present invention, and FIG. 1 is a plan view of a portion of the floor heating structure showing a state in which the third step is completed. FIG. 2 shows the state after completing the fourth step, and also shows the state in which the fourth step is completed, and
FIG. 2 is a vertical cross-sectional view of a portion of the floor heating structure along line A′.

In the figure, reference numeral 1 denotes a plate-shaped heat insulating member for forming a heat insulating layer, such as one made of lightweight foamed synthetic resin with low hardness.
A groove 2 for arranging a heat dissipation tube is formed on the front side of the plate-shaped heat insulating member 1, and furthermore, through holes 4 for forming mortar legs penetrating from the front side to the back side are bored at appropriate intervals. There is. The cross-sectional shape of the groove 2 is formed to be larger than the thickness of the heat dissipation tube 3 that radiates heat through hot water, and the width and depth of the groove are reduced to hold the heat dissipation tube 3 at appropriate locations in the groove 2. The tube holding portions 2', . . . are formed therein. Although illustration is omitted, when a large number of plate-shaped heat insulating members 1, ... are laid on the upper surface of the floor subfloor 6 to form a heat insulating material layer, the heat dissipation tube arrangement formed on each plate-shaped heat insulating member 1 is In order to make the wearing groove 2 continuous, the groove 2 may have a shape that changes direction in addition to the linear shape shown in the figure. The heat dissipation tube 3 is designed not to come into contact with the heat dissipation tube mounting groove 2 at locations other than the tube holding portions 2', . Reference numeral 5 denotes a screw installed vertically in the flooring 6 within the through hole 4. 7 is a wire mesh stretched over the heat dissipation tube 3. 8 is a mortar layer that envelops the wire mesh 7 and the heat radiation tube 3. 8' is a mortar layer 8 in the through hole 4 for forming mortar legs.
The lower end of the mortar leg 8' reaches the upper surface of the subfloor 6.

The heat insulating material used for the plate-shaped heat insulating member 1 includes:
Examples include synthetic resin foams and polyurethane foams commercially available under trademarks such as "Styrofoam" and "Kanelite Foam." The heat radiation tube 3 has an inner diameter of about 8 to 12 mm and a wall thickness of 1 mm.
A soft polyethylene tube with a diameter of about 1.4 mm is preferable. The wire mesh 7 is for preventing cracks in the mortar layer 8, and is, for example, 1.2t×30mm.
You can use metal lath of about 45mm.
The pitch interval between the heat dissipation tube arrangement groove 2 and the heat dissipation tube 3 is preferably about 4 to 6 cm, the thickness of the plate-shaped heat insulating member 1 is about 3 to 6 cm, and the thickness of the mortar layer 8 is about the same as the pitch of the heat dissipation tube 3. The upper part of the
Desirably 10-20mm. The diameter of the through hole 4 and the mortar leg 8' is approximately 3 cm, and the diameter of the mortar leg 8' is approximately 3 cm.
By arranging them vertically and horizontally at intervals of ~50 cm, the entire mortar layer 8 is supported on the subfloor 6 by the mortar legs 8'. Of course, a substance that increases thermal conductivity or heat capacity may be appropriately added to the composition of the mortar layer 8. An example of the floor base is a concrete slab.

Next, in order to install on-site floor heating, as a first step, a large number of plate-shaped heat insulating members 1 are formed into a series of grooves 2 for arranging heat dissipation tubes formed in each plate-shaped heat insulating member. As a second step, the first
The heat dissipation tube 3 is held in the tube holding parts 2', . As the third step, when the wire mesh 7 is stretched above the heat dissipation tube 3 arranged and installed in the heat dissipation tube arrangement groove 2 in the second step,
The state shown in Figure 1 will result. As the fourth step,
In the third step, mortar is poured onto the stretched metal rod 7 to form a mortar layer 8 that envelops the wire mesh 7 and the heat radiation tube 3 in the heat radiation tube groove 2, and at the same time, the poured mortar is A portion of the mortar is also poured into the through holes 4 for forming mortar legs, and when the mortar legs 8' reaching the upper surface of the floor base 6 are formed integrally with the mortar layer 8, the construction of the floor heating is completed and the second This results in the state shown in the figure. The screws 5 which are erected on the floor base 6 in the mortar leg forming through holes 4 are wrapped around the mortar legs 8'.
Furthermore, after curing the mortar layer 8, laying an appropriate floor finishing material on the mortar layer 8,
Same as before. In the floor heating structure obtained through the first to fourth steps described above, the load applied to the heating floor is transferred to the floor base 6 via the mortar layer 8 and the mortar legs 8', and the load is transferred to the floor base 6 through the mortar layer 8 and the mortar legs 8'. It does not cover the heat insulating member 1. This prevents the plate-shaped heat insulating member for forming the heat insulating layer, such as one made of lightweight foamed synthetic resin with low hardness, from being compressed and deformed by the load applied to the heating floor. Furthermore, even though the shape of the plate-shaped heat insulating member changes over time due to long-term use, the surface of the heated floor does not sink. Since most of the heat dissipation tube 3 is surrounded by the mortar layer 8, distortion of the heated floor due to thermal expansion of the heat dissipation tube 3 itself is completely prevented.
When mortar is flowed into the mortar leg forming through hole 4 to form the mortar leg 8', the tip of the mortar leg 8' is formed by adhering to the upper surface of the floor base 6, and the mortar leg Since the screws 5 erected in the floor base 6 are enclosed within the floor 8', the mortar layer 8 does not warp upward due to thermal expansion. As mentioned above, the tip of the mortar leg 8' is attached to the subfloor 6.
Since it is formed by mortar poured onto the upper surface, even if the upper surface of the subfloor 6 is uneven, there is no problem in forming the mortar legs.
Therefore, it becomes possible to simplify the finishing work on the upper surface of the subfloor, which has been the biggest bottleneck in conventional floor heating construction.

(Effects of the Invention) The underfloor heating construction method of the present invention is such that the mortar legs supporting the mortar layer surrounding the wire mesh and the heat dissipation tube are passed through the plate-shaped heat insulating member laid on the upper surface of the floor base to expose the upper surface of the floor base. By forming the mortar layer integrally with the mortar layer, the following effects can be achieved. That is,
(1) Despite using heat insulating materials such as lightweight foamed synthetic resin with low hardness, it can withstand large loads, and even after long-term use, the board-shaped heat insulating material does not wear out or deteriorate. A floor heating structure in which the heating floor surface does not sink can be obtained. (2) In order to prevent compressive deformation of the heat insulating material layer due to load, it is not necessary to thicken the mortar layer that wraps around the wire mesh and heat dissipation tube as in the past, so it is possible to reduce the thickness of the mortar layer. Therefore, it has become possible to shorten the time required for mortar pouring work and the time required for heating start-up. (3) Mortar legs are formed by mortar that flows into the top surface of the subfloor through the mortar leg forming holes that pass through the plate-shaped heat insulating member from the front side to the back side, so there is no unevenness on the top surface of the subfloor. Since it is possible to form mortar legs even if there is a problem, in order to prevent the floor from sinking due to deformation of the plate-shaped heat insulating member over time, it is necessary to plaster the upper surface of the subfloor on which the plate-shaped heat insulating member is laid, as in the past. There is no need to finish it by polishing it to make it precisely flat. Therefore, it has become possible to simplify the finishing of the top surface of the subfloor, which was the biggest hurdle in conventional floor heating construction, and to significantly shorten the time required for on-site casting construction. (4) Since the discharge tubes are arranged and installed in a series of heat radiation tube installation grooves formed on the surface side of the heat insulating material layer, the work of arranging and installing the heat radiation tubes can be carried out easily and quickly.

[Brief explanation of drawings]

The drawings are explanatory diagrams of the floor heating installation method of the present invention, in which Figure 1 is a plan view of a portion of the floor heating structure showing the state in which the third step has been completed, and Figure 2 shows the state in which the fourth step has been completed. FIG. 2 is a vertical cross-sectional view of a portion of the floor heating structure taken along line A-A' in FIG. 1; 1: Disc-shaped heat insulating member for forming a heat insulating material layer, 2: Groove for arranging a heat dissipation tube, 3: Heat dissipation tube, 4: Through hole for forming a mortar leg, 6: Floor base, 7: Wire mesh, 8: Mortar layer, 8' : Mortar legs.

Claims (1)

[Claims] 1 A groove for distributing the discharge tube is formed on the surface side,
In addition, a large number of plate-shaped heat insulating members for forming a heat insulating material layer, such as those made of lightweight foamed synthetic resin, each having a large number of through holes for forming mortar legs penetrating from the front side to the back side at appropriate intervals, are A first heat insulating material layer is formed by laying the heat dissipation tube grooves formed in the plate-shaped heat insulating member on the upper surface of the floor subfloor so that the grooves for arranging the heat dissipation tubes are continuous.
a second step of arranging and laying the heat dissipation tubes in a series of heat dissipation tube grooves formed in the first step; and a wire mesh placed above the heat dissipation tubes laid in the second step. A third step of tensioning;
Mortar is poured over the stretched wire mesh to form a mortar layer that envelops the wire mesh and the heat dissipation tube, and a portion of the poured mortar is also poured into the through holes for forming the mortar legs to form a subfloor. A method for installing floor heating, comprising a fourth step of forming mortar legs reaching the upper surface of the mortar layer integrally with the mortar layer.