JPS636363Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a floor heating structure.

The purpose of this is that it is easy to install, and even though it uses a lightweight insulation material with low hardness, it can withstand large amounts of weight and does not cause warping or lifting of the floor surface due to thermal expansion. To provide a floor heating structure in which floor subsidence does not occur.

Traditionally, underfloor heating has been considered an ideal means of heating for people with cold heads and warm feet, but because it is complicated to install, takes a long time, and has high equipment costs, its popularity has been quite low.

The inventors of this invention kept this point in mind, and first of all, in 1972,
In November, he filed a utility model registration application (Utility Model Application No. 164777, 1984) for his idea of a ``heating floor structure.'' This was a structure in which tubes for transmitting hot water temperature were laid on top of a layer of heat insulating material, a wire mesh was placed on top of the tubes, and these were embedded in a layer of mortar. For the second time, he filed a utility model registration application (Utility Model Application No. 1983-010905) for his idea of a ``floor heating system'' as an improved version of the above. This second idea was to provide a guide groove in the insulation layer, hold the tube in the guide groove, and then embed it in a mortar layer.Moreover, this insulation layer had three types of guide groove shapes. It was said that tube construction would be much easier if the necessary materials were prepared.

Since then, we have installed floor heating according to the invention in the previous application in various places, and it has been praised for its excellent advantages and the simplicity of the construction process, and has been well received for its uniform heating effect. On the other hand, since it is difficult to make the floor base completely flat, the contact between the insulation material layer and the floor base tends to be point or line contact, and if a heavy object is placed on the top of the floor, the insulation The wood layer may partially deform or float, and sometimes when the temperature of the floor rises due to heating, the mortar layer and insulation layer may warp upwards, making it difficult to use the product over a long period of time. If this occurs, it is predicted that the entire insulation layer will sag or deteriorate, causing the floor to sink.
It has become clear that there are a few shortcomings.

The present invention is an improvement on this point, and the main improvement is that a part of the mortar layer penetrates the insulation layer and is connected directly to the floor base, that is, a part that can be called mortar legs. This means that the entire circumference of most of the tubes is filled with a layer of mortar, which provides even greater strength and durability, and completely prevents distortion of the tubes themselves due to thermal expansion.

That is, a heat insulating material layer having guide grooves and through holes bored at appropriate intervals is laid on the floor base, and tubes for passing hot water are spread throughout the guide grooves. One part of the tube is held in the narrow part of the guide groove, and most of the other part does not come into contact with the guide groove.A wire mesh is stretched over the tube, and the majority of the tube is A mortar layer is embedded all around the tube and the wire mesh and in the through hole, and screws are embedded in the mortar legs formed in the through hole to fix it to the floor base. This led to the devising of a unique underfloor heating structure.

The present invention will be explained with reference to the drawings.

FIG. 1 shows a part of the structure of the present invention in a plan perspective view. FIG. 2 is a sectional view taken along line A-A' in FIG.

As shown in these figures, in the present invention, there is first a heat insulating material layer 1 laid on a floor base, a guide groove 2 is provided in this heat insulating material layer 1, and a guide groove 2 is provided in this heat insulating material layer 1.
Tube 3 is spread out inside.
A portion of the guide groove 2 is a narrow portion 2', and the tube 3 is fitted into and held in this narrow portion 2', and most of the guide groove 2 is not in contact with the tube 3.

It goes without saying that this tube 3 is for passing hot water for floor heating.

The heat insulating layer 1 of the present invention prevents downward heat loss, and the insulating layer 1 is provided with through holes 4 at appropriate intervals. The screws 5 shown in the through holes 4 protrude from the floor base 6 and are used to fix the mortar legs as described later.

In other words, the screws 5 are provided protrudingly at respective locations on the floor base 6 that correspond to the positions of the through holes 4 provided in the heat insulating material layer 1 at appropriate intervals.

Further, the wire mesh 7 indicated by the thick line in FIG. 1 is stretched over the tube 3 as shown in FIG.

As shown in Figure 2, the mortar layer 8 is the insulation layer 1.
It is formed as an upper layer embedded all around the tube 3, around the wire mesh 7, and in the through hole 4.

Note that FIG. 1 is a perspective view in which the layer that will become the mortar layer 8 is made transparent.

As shown in FIG. 2, a screw 5 is provided protruding from the floor base 6, and is loosely inserted into a through hole 4 drilled in the insulation layer 1.
A mortar layer is also embedded in this through hole 4.

Therefore, the mortar layer inside this through hole 4 becomes what can be called a mortar leg 8', which is firmly supported by the floor base 6 and directly fixedly connected to the floor base 6 by screws 5. be.

These mortar legs 8' are provided vertically and horizontally at intervals of approximately 30 to 50 cm, and firmly support the entire mortar layer 8.

Therefore, even if the insulation layer 1 is made of a lightweight foam-like material with low hardness, the strength and durability of the entire floor will not deteriorate at all, and the mortar layer will not warp upward due to thermal expansion or due to load. This makes it possible to completely prevent the deformation and lifting of the heat insulating material layer 1, as well as the sinking of the floor surface due to fading and sagging of the heat insulating material layer 1 during long-term use.

Also, in the drawings of the previous application, the bottom surface of the tube was shown in direct contact with the insulation layer, but in this case, the strain caused by the tube's thermal expansion would be concentrated at the area in contact with the insulation material, resulting in problems with the durability of the tube. However, in the present invention, most of the tube 3 is covered with a mortar layer 8.
, so there is no need to worry about the above.

In addition, in the narrow part 2' of the guide groove 2 provided to hold the tube 3 when it is spread, 60 to 80% of the circumference of the tube 3 is covered with the insulation layer 1.
Because it is in contact with the metal, there is little resistance due to thermal expansion, so the above concerns are originally unnecessary.

In the present invention, the floor base 6 may be, for example, a concrete slab, and the heat insulating material layer 1 may be, for example, synthetic resin foam, polyurethane foam, etc. commercially available under trademarks such as "Styrofoam" and "Kanelite Foam". can be given.

Further, the tube 3 is preferably a soft polyethylene tube having an inner diameter of about 8 to 12 mm and a wall thickness of 1 to 1.4 mm.

The wire mesh 7 is to prevent cracks in the mortar layer 8, and may be made of metal lath of 1.2t x 30mm x 45mm, for example.

In this invention, the pitch interval of tube 3 is 4~
6 cm is preferable, and the thickness of the insulation layer 1 is 3 to 6 cm.
The thickness of the mortar layer 8 is 10~
20 mm is desirable.

In addition, in the present invention, substances that increase thermal conductivity or increase heat capacity may be appropriately incorporated into the composition of the mortar layer 8, and it goes without saying that even better heating effects can be obtained by these. It is.

As explained above in detail, the present invention forms mortar legs in the through holes provided at appropriate intervals in the insulation layer, and fixes and connects the floor base and the mortar legs within the mortar legs. The entire mortar layer is firmly supported directly on the floor base by embedding screws.
Even if the heat insulating material layer below the mortar layer is a lightweight foam layer, warping, floating, deformation of the floor, and floor subsidence due to long-term use can be completely prevented.

In addition, the insulation layer of the present invention is provided with guide grooves that are very convenient when laying the tubes, making construction quick and economical.Moreover, the contact area between the tubes and the guide grooves is quite small, and most of the tubes are covered. is suspended in the air with respect to this guide groove, and as a result, most of the tube can be solidified with a layer of mortar around its entire circumference, completely preventing distortion of the tube itself due to thermal expansion. It is.

In this way, the present invention provides an ideal floor heating structure for dealing with ``cold heads and warm feet'' and has great effects on construction, strength, and durability.

[Brief explanation of the drawing]

FIG. 1 shows a part of the structure of the present invention in a plan perspective view. FIG. 2 is a sectional view taken along line A-A' in FIG. 1... Heat insulation layer, 2... Guide groove, 3... Tube, 4... Through hole, 5... Screw, 6... Floor base,
7...wire mesh, 8...mortar layer, 8'...mortar leg.

Claims (1)

[Scope of utility model registration request] A heat insulating material layer having guide grooves and through holes bored at appropriate intervals is laid on the floor base, and tubes for passing hot water are spread throughout the guide grooves. One part is held in the narrow part of the guide groove, and most of the other part does not come into contact with the guide groove.A wire mesh is stretched above the tube, and the majority of the tube and A mortar layer is embedded all around the wire mesh and in the through hole, and screws are embedded in the mortar legs formed in the through hole to fix it to the floor base. Underfloor heating structure.