JP2001355864A - Floor heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a warp due to a difference in elongation to a heat generating body between a surface plate member and a back plate member and to provide a joint part with a buffering means and facilitate joining of floor heating units with each other. SOLUTION: A spacer is situated between the surface plate member and the back plate member to form a space part and heat insulation sheets or plate materials are laid below the space. A planar heat generating body is placed on its upper side and a jack and a plug are disposed in a side position near and corresponding to the end part of either the jack or the plug. By combining together floor heating units having linear symmetrical structure regarding the end part, electric connection parts are collected together. The adjoining units are electrically interconnected through the plug and the jack and the whole surface or a partial surface of the floor of a room forms a floor heating device. Further, a difference in elongation produced between the surface member 27 and the back member 28 by the heat generating body is absorbed by situating a means, such as a gap, between the surface member and a connection part between the spacer, fixed thereat, and the back member, and the occurrence of a warp is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a unit-type floor heating device.

[0002]

2. Description of the Related Art Floor heating is an ideal heating method for head and foot heat. At present, there are an electric heating method and a hot water heating method.
The electric type uses a panel on which a cord heater is wired as a floor material. In the hot water system, hot water drawn from a boiler such as gas or petroleum is circulated through a synthetic resin tube provided on a flooring. Conventionally, at the time of housing construction, structural plywood (equivalent to a thickness of 12 mm) in which a groove for piping or wiring is provided below the wooden floor surface material is spread over the entire room, and the plywood is heated with hot water. After embedding resin piping for heating or heat generation wiring for electric heating, a wooden floor surface material (8 to 12 mm thick) is spread over it.
In these systems, complicated on-site work such as pre-groove processing of structural plywood and embedding work for heating pipes or wiring in grooves during construction and alignment of grooves are required, requiring a large amount of work with specialized craftsmen. Become. In addition, since the heating element is embedded in the underlying structural plywood, the heat conduction efficiency to the floor surface is deteriorated and the energy use efficiency is reduced. The heat diffusion above and below the heating element is not uniform. The floor surface material warps in a year,
Re-construction may be required in some cases.

[0003]

The object of the present invention is to solve the problem of the difference in elongation between the front member and the back member caused by the heating element arranged between the front member and the back member surrounded by the spacer. To prevent the floor heating unit from warping. Another object of the present invention is to develop a floor heating device that facilitates joining of floor heating units at the time of construction, eliminates wiring work on site, and withstands long-term use.

[0004]

A first means for solving the problems of the present invention is that a connecting member such as a screw provided on a surface member and a spacer fixed to the surface member is connected to a back member.
A floor heating unit provided with a gap for absorbing a difference in elongation between the front member and the back member due to a heating element arranged between the front member and the back member surrounded by the spacer.
A second means for solving the problems of the present invention is to fix a central portion of a front member and a rear member, and to provide a connection portion for absorbing a difference in elongation due to a heating element in other portions, and to connect the front member and the rear member. This is a floor heating unit in which the difference in elongation at both end portions of the front surface member and the back surface member by the heating element disposed between the members and surrounded by the spacer is equalized. A third means for solving the problems of the present invention is to form a space by installing a spacer in a peripheral portion between the front plate member and the back plate member, and to install a planar heating element in the space to provide floor heating. A unit is provided with a three-pole plug on one side of one end,
A three-pole jack is provided on the other side of the same one end,
A buffer member is provided at the junction between the unit and the three-pole plug and / or the three-pole jack to reduce positional accuracy for the insertion connection between the three-pole plug and the three-pole jack, and the spacer is provided between the front surface member and the back surface member. Is a floor heating unit having a means for absorbing a difference in elongation between a front member and a back member due to a heating element arranged and enclosed by the heating element.

One of the means for solving the problems is to form a space by installing a spacer in a peripheral portion between a front plate member and a back plate member, and form a planar heating element above the space. Is a floor heating unit in which a heat insulating sheet is installed underneath. Further, another means for solving the problem is the floor heating unit described above, which is a plywood in which a front plate material and a back plate material are laminated with a veneer on the front and back surfaces. Another means for solving the problem is to form a reclaimed portion with the front plate member and the rear plate member and the spacer sandwiched therebetween to form a joint between the units, and to form one of the end portions on one side. The above-mentioned floor heating unit is provided with a three-pole plug on one side and a three-pole jack on the other side of the same one end part. Another means for solving the problem is that a buffer member is provided at a junction between the three-pole plug and / or the three-pole jack and the unit, and the positional accuracy for inserting and connecting the three-pole plug and the three-pole jack is reduced. Floor heating unit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention, in a floor heating unit, a connecting member provided on a front member and a spacer fixed to the front member is connected to a back member to be connected. Means for absorbing or releasing a difference in elongation between the front member and the back member caused by long-term heat generation of a heating element disposed in the space formed by the spacer between the front member and the back member. Provided to prevent warpage of the floor heating unit. In another example of the embodiment of the present invention, in the floor heating unit, the central portion of the front surface member and the back surface member is fixed via a spacer, and the difference in elongation due to the heating element is applied to the portion via the other spacer. Connecting portions for absorbing heat, and the difference in elongation between the front member and the back member caused by heat generated over a long period of time by the heating element disposed between the front member and the back member at both ends thereof is surrounded by a spacer. And adjust the change in the difference in elongation to prevent warpage of the floor heating unit.

In still another embodiment of the present invention, in a floor heating unit, a space is formed in a peripheral portion between a front plate member and a back plate member to form a space, and the space is formed in the space. A floor heating unit is provided by installing a planar heating element, a three-pole plug is provided on one side of one end, and a three-pole jack is provided on the other side of the same one end. And / or a buffer member is provided at the junction between the three-pole jack and the unit to reduce the positional accuracy for the insertion connection of the three-pole plug and the three-pole jack, and to prevent the floor heating unit from warping. At the time of construction, the floor heating units are easily joined to each other. In another embodiment, a space is formed by installing a spacer in a peripheral portion between a front plate member and a back plate member, a heat insulating sheet is laid below the space, and a planar heating element is placed thereon. (For example, see Japanese Utility Model Laid-Open No. 3-84584, Japanese Patent No. 2584592, etc.), and balance the temperature of the back plate member with the temperature of the front plate member to prevent the occurrence of warpage for a long time. A jack is arranged at one side position and a plug is arranged at the corresponding other side position to produce a floor heating unit, and adjacent units are electrically connected to each other with the plug and the jack, and the floor of the room is The entire surface or a part of the surface is a floor heating device.

Further, the jack and the plug are arranged at corresponding side positions near any one of the ends, and a floor heating unit having a line-symmetrical structure with respect to the end is combined to provide an electric connection. The connection part was put together. The thickness of the floor heating device was set to 12 mm by setting the thickness of each of the front surface member, the back surface member, and the spacer to, for example, 4 mm, so that the thickness became the same as that of a normal floor plate material.

[0009]

FIG. 1 shows an example in which a floor heating unit of the present invention is installed on a floor of a room. 1 is an outline of a room in which a floor heating device is installed, 2 and 3 are left and right floor heating units, 4 is a surrounding edge, 5 is a sheet heating element, and 6 is an outlet connected to a controller. The left and right symmetric floor heating units 2 and 3 having the planar heating element 5 are spread over the entire area of the room 1 or in a required range of the central portion, and are fixed around the periphery by the peripheral edge 4. Floor heating units 2 arranged on these floors,
The floor heating device having 3 is connected to a power supply via a controller 6 (see FIG. 11) partially incorporated in the surrounding edge 4.

FIG. 2 shows an example of the left floor heating unit in a plan view excluding a surface member. 21a is a convex front end spacer, 21b is a concave left spacer, 21c is a convex right spacer, and 21d is a rear spacer. 22
Is a 3-pole jack, 23 is a 3-pole plug, 24a is the first
The thermostat, 24b is the second thermostat, 25
Is a safety fuse. Convex front end spacer 21a,
Concave left spacer 21b, convex right spacer 21c
The sheet heating element 5 (indicated by a two-dot chain line) is provided in a portion surrounded by the rear end spacer 21d. A three-pole jack 22 is provided at the upper part on the left end side, and a three-pole plug 23 is provided at the upper part on the right end side. The sheet heating element 5 is connected to the second thermostat 24a, 24b via the second
And a third line via a fuse 25. The sheet heating element is also grounded to the first wire.

FIG. 3 is a sectional view taken along line AA of FIG. 21
a is a convex front end spacer, 22a is a three-pole jack 2
The concave electrode 23 a provided on the two-electrode 23 is a convex electrode provided on the three-pole plug 23. 27 is a front surface member and 28 is a back surface member. 26a and 26b are upper and lower cushioning members formed of an elastic member such as rubber or synthetic resin. This allows a slight positional change such as up and down movement when the three-pole plug 23 is inserted into a three-pole jack (not shown) provided in the floor heating unit arranged next. Thereby, the convex electrode 23a
When the floor heating unit is installed, the positional accuracy between the convex front end spacer 21a and the convex right side spacer and the like is reduced.
The operation of inserting the convex electrode 23a and the concave electrode 22a is facilitated. The surface member, the spacer, and the back surface member are positioned with respect to each other and then bonded with an adhesive, or joined with nails or screws. Convex front end spacer 21a
If the length of the protruding right side spacer 21c is equal to or shorter than that of the protruding portion from the front surface member 27 and the back surface member 28, the handling of the floor heating unit is reduced and the handling becomes easy.

FIG. 4 is a right side view of the left floor heating unit 2 shown in FIG. 21a is a convex front end spacer,
21c is a convex right side spacer, 23 is a three-pole plug,
Reference numeral 23a denotes a convex electrode provided on the three-pole plug 23. FIG. 5 is a left side view of the left floor heating unit 2 shown in FIG. 21a is a convex front end spacer, 21b is a concave left spacer, 22 is a three-pole jack, 22a is 3
The concave electrodes 26a and 26b provided on the pole jack 22
A cushioning member 27 made of rubber or synthetic resin for allowing movement of the three-pole jack 22 such as up-and-down movement is provided.
8 is a back surface member.

FIG. 6 is a sectional view taken along the line BB of the left floor heating unit 2 shown in FIG. 5 is a sheet heating element and 7 is a heat insulating material. 24b is a recess 28 provided in the back surface member 27.
b, the second thermostat contacts the sheet heating element 5 through the hole 7b provided in the heat insulating mat 7. 26 is a wiring groove for storing the electric wire. The second thermostat is installed in a recess 27 b provided in the back surface member 27, and contacts the planar heating element 5 at a hole 28 b provided in the heat insulating mat 7. Although not shown here, the first thermostat is similarly installed in a recess 27 a provided in the back surface member 28, protrudes from a hole 7 a provided in the heat insulating mat 7, and comes into contact with the sheet heating element 5. The heat insulating mat 7 is formed of a heat insulating material such as foamed urethane.

FIG. 7 shows an example of the right floor heating unit in a plan view excluding a surface member. The left floor heating unit shown in FIG. 2 has a line-symmetric structure except for a part. 21e is a concave front end spacer, 21f is a concave left spacer, 2
1 g indicates a convex right spacer. 5, 21d, 24
a, 24b, 25, 22 and 23 are respectively planar heating elements,
The rear end spacer, the first thermostat, the second thermostat, the fuse, the three-pole jack, and the three-pole plug have a similar shape and arrangement that are line-symmetric to those in the left floor heating unit 2. FIG. 8 is a right side view of the right floor heating unit 3 shown in FIG. 21e is a concave front end spacer,
23 is a three-pole plug, 23a is a convex electrode provided on the three-pole plug 23, 27 is a front member, and 28 is a back member.

FIG. 9 is a left side view of the right floor heating unit 3 shown in FIG. 21e is a concave front end spacer,
22 is a three-pole jack, 22a is a concave electrode provided on the three-pole jack 22, 6a and 26b are buffer members made of rubber or synthetic resin or the like for allowing the three-pole jack 22 to move up and down. 27 is a front member, 28 is a back member,
It is.

FIG. 10 is a sectional view taken along the line CC of the right floor heating unit 3 shown in FIG. Reference numeral 24a is a convex right spacer. 22, a three-pole jack; 22a, a concave electrode provided on the three-pole jack 22;
3 is a convex electrode. 27 is a surface member, 28
Is a back surface member. 26a and 26b are upper and lower cushioning members formed of an elastic member such as rubber or synthetic resin. When the convex electrode 23a of the three-pole plug 23 is inserted into the concave electrode (not shown) of the three-pole jack provided in the next floor heating unit, some mutual positional fluctuation is allowed.
Thereby, the convex electrode 23a and the convex front end spacer 21 are formed.
When the floor heating unit is installed, the position of the convex electrode 23 is reduced.
a and the insertion operation of the concave electrode 22a is facilitated. Also, a convex front end spacer 21a and a convex right spacer 21c are provided.
If it is equal to or shorter than the protruding portion from the front surface member 27 and the back surface member 28, it will be less likely to collide with the floor heating unit during handling such as transportation, and packaging will be easier.

FIG. 11 is a conceptual diagram of the controller 6. 61 is a control device, 62 is an outlet. As shown in FIG. 1, the peripheral edge 4 may be partially incorporated in one side. In the case as shown in FIG. 1 using 16 floor heating units, first, the power of 1300 W is turned on, the temperature of each floor heating unit is rapidly increased, and the surface temperature of the floor heating unit is 30 degrees (plane heating element). 5 is about 40 ° C.) When the temperature reaches about 40 ° C., for example, 250 W at room temperature 20 ° C. or 45 W at room temperature 15 ° C.
The power is switched to 0W (an example of an electric power value at which 16 floor heating units gradually increase in temperature), and the temperature of the sheet heating element 5 is changed to
40 degrees C and 45 degrees by thermostats 24a and 24b
If the temperature is controlled to increase or decrease between degrees C, a comfortable room temperature can be maintained for a long time with a small amount of power. Note that the difference between the surface temperatures of the floor heating units 2 and 3 and the built-in planar heating element 5 in this embodiment is about 10 ° C.

FIG. 12 shows a convex surrounding edge 41 and a concave surrounding edge 4.
2 is a sectional view of FIG. Convex rim 41 and concave rim 42
Connects the floor heating unit and the installation floor with an inclined surface.
FIG. 13 shows the planar heating element 5 in a sectional view. 51 is a sheet heating element main body, 52 is an insulating sheet, and 53 is an aluminum foil sheet. For example, the thickness of the sheet heating element 5 is 1.2 m.
m, and the thickness of the heat insulating mat 7 is set to about 2.8 mm, and the heat insulating mat 7 is placed in a space between the front surface material 27 and the back surface material 28. FIG.
4 is a sectional view showing the structure of the front surface member 27 or the back surface member 28. 27a indicates a plywood, and 27b and 27c indicate a veneer. The front surface member 27 or the back surface member 28 is obtained by bonding a veneer to the front and back surfaces of a plywood 27a. The veneer is made of hard wood, such as oak, which is not easily scratched. For example,
The thickness of the veneer is 0.3 mm and the thickness of the plywood is 3.4 m
Assuming that m, the thickness of the front surface member or the back surface member is 4 mm. In this case, the thickness of each spacer provided between the front and back members is 4 mm, and the height of the formed space is 4 mm.
To In this case, the thickness of the floor heating unit is 12 mm
Thus, the thickness becomes the same as the thickness of the ordinary floor material, and the convenience of use is achieved.

FIG. 15 is a flowchart showing an example of the control method. The program starts running by switching on the start switch of the device. It stops only after the start switch is turned off. The on-off state of the stop switch may be determined at a place where the operation time of the microcomputer is long, so that the initial state is obtained even when the stop switch (not shown) is pressed at any time. If it is determined that the stop switch is turned on, it returns to the initial state. When 16 floor heating units are used, after the start switch is turned on, the surface temperature of the floor heating unit is raised to 30 ° C. (equivalent to a surface heating element temperature of 40 ° C.) at a stretch with 1300 watts of power. After ascending (about 8 minutes) and detecting it,
For example, if the operation is performed between 35 ° C. (corresponding to a sheet heating element temperature of 45 ° C.) and 30 ° C. with a power of 250 W at a room temperature of 20 ° C. and 450 W at a room temperature of 15 ° C. The power consumption can be reduced. After the power switch is turned on, first, the surface temperature of the floor heating unit is raised to 30 ° C. at a stretch with a large amount of power, and thereafter, the continuous operation is performed with a small amount of power, so that the amount of power consumption during long-time continuous operation is reduced. I can do it.

Since the floor heating device is made into a unit and a three-pole plug and a three-pole jack are connected so as to be easily connected to each other, electric wiring for laying the floor heating device as in the prior art is used. Construction work is not required, and construction is simple and easy. The front and back members are plywood having a thickness of 4 mm, or plywood having a thickness of 3.4 mm, and 0.3
mm, and the thickness of the spacer between the front and back members is set to 4 mm, and a cloth heating element (for example, 1.2 mm in thickness) and a heat insulating material (for example, 2.8mm urethane foam or equivalent insulation)
Alternatively, if a plate material of the same thickness is provided, there will be no fluffy feeling even when stepped on, and it will endure a weight of 100 kg per 5 square cm. The height of the space may be made equal to the thickness of the sheet heating element.

FIG. 16 is a sectional view showing a state in which the floor heating unit is warped. The floor heating device including the floor heating unit is directly mounted on a structural plywood constituting a floor foundation and used as a floor, or is mounted on a completed floor. Since the lower surface of the back member is in contact with the surface of the structural plywood or the floor, heat is easily trapped, and the temperature of the back member lower than the temperature of the upper member increases. As an example, as shown in a cross section in FIG. 16, when the surface temperature of the planar heating element is 40 ° C., the temperature of the surface member of the floor heating unit is 30 ° C., and the temperature of the back surface member is 37 ° C. Degree C
become. For this reason, the back surface member extends about 0.5 to 1 mm more in the longitudinal direction (1212 to 1818 mm, width is 303 mm) than the front surface member. When the front surface member, the spacer, and the back surface member are fixed, the difference in elongation cannot be absorbed, and both ends warp upward as shown in FIG.

Therefore, a device was devised to absorb or escape this difference in elongation. Since the thickness of the front surface member, the back surface member, and the spacer interposed therebetween is about 4 mm, the front surface member and the spacer are fixed with an adhesive, and the screwing depth of the screw as the connection member is increased. The fixing of the screw as the connecting member to the surface member and the spacer was ensured. The connection between the spacer and the back surface member was performed by using an appropriate distance and number of screws provided along the spacer. For example, about three screws in the center portion were fixed such that the diameter of the screw hole was the same as the screw diameter, or the screw was directly screwed in without providing the screw hole. In this way, the central portion (see the portion surrounded by the dashed line in FIG. 18) is fixed, and the difference in elongation at both ends is substantially equal. At a position other than the center part, a large screw hole is provided, and the screw tightening force is adjusted,
The difference in elongation between the screw diameter and the larger screw hole diameter provided on the back surface member is made to absorb or escape by sliding each other. FIG. 17 is a sectional view showing an example of the connecting means. In this example, the screw diameter was 3 to 3.5 mm, and the screw hole diameter was 4 to 5 mm. FIG. 18 shows an example of a screw arrangement as a conceptual diagram. By the way, if the floor heating unit is not placed on the structural plywood or the floor, but the upper and lower surfaces are made to have the same heat radiation condition such as creating a space at the bottom,
The difference in elongation between the front member and the back member disappeared, and no warpage occurred.

[0023]

According to the present invention, the difference in elongation between the two members caused by intermittent heat generation over a long period of time by the heating element installed between the front and rear members of the floor heating unit is provided at the connection between the front and rear members. The provision of the absorbing means prevents the floor heating unit from warping, and enables long-term comfortable use. In addition, a buffer means is provided at the junction between the three-pole plug and / or the three-pole jack and the floor heating unit.
Positional accuracy for inserting and connecting the pole plug and the three-pole jack is eased, and the floor heating units are easily joined to each other.

[Brief description of the drawings]

FIG. 1 shows an example in which a floor heating unit of the present invention is installed on a floor of a room.

FIG. 2 shows an example of a left floor heating unit in a plan view excluding a surface member.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

4 is a right side view of the left floor heating unit 2 shown in FIG.

FIG. 5 is a left side view of the left floor heating unit 2 shown in FIG.

6 is a sectional view of the left floor heating unit 2 shown in FIG. 2 taken along line BB.

FIG. 7 shows an example of a right floor heating unit in a plan view excluding a surface member.

8 is a right side view of the right floor heating unit 3 shown in FIG.

9 is a left side view of the right floor heating unit 3 shown in FIG.

10 is a perspective view of the right floor heating unit 3 shown in FIG.
It is sectional drawing.

11 shows a conceptual diagram of the controller 6. FIG.

12 is a cross-sectional view of a convex surrounding edge 41 and a concave surrounding edge 42. FIG.

FIG. 13 is a cross-sectional view showing the sheet heating element 5;

FIG. 14 is a sectional view showing the structure of a front member 27 or a back member 28.

FIG. 15 is a flowchart illustrating an example of a control method.

FIG. 16 is a sectional view showing a state in which the floor heating unit is warped.

FIG. 17 is a cross-sectional view showing one example of the connecting means.

FIG. 18 shows an example of a screw arrangement as a conceptual diagram.

[Explanation of symbols]

 1 room size 2 left floor heating unit 21a convex front end spacer 21b concave left spacer 21c convex right spacer 21d rear end spacer 22 three pole jack 23 three pole plug 24a first thermostat 24b second thermostat 25 fuse 26a upper buffer member 26b Lower buffer member 27 Surface member 27a Plywood 27b Veneer 27a Veneer 28 Back surface member 3 Right floor heating unit 4 Surrounding edge 5 Planar heating element 6 Controller 7 Flat screw

Claims (3)

[Claims] 1. A heating element disposed between a connecting member such as a screw provided on a front member and a spacer fixed to the front member and a rear member, and surrounded by the spacer between the front member and the rear member. A floor heating unit provided with a gap for absorbing a difference in elongation between a front member and a back member due to a body. 2. The method according to claim 1, further comprising fixing a central portion between the front member and the rear member,
Connecting portions are provided in other portions to absorb the difference in elongation caused by the heating element, and the elongation of the front member and the back member by the heating element disposed between the front member and the back member at both ends thereof by being surrounded by the spacer. Floor heating unit so that the difference between them is equal. 3. A space is formed by installing a spacer in a peripheral portion between the surface member and the back member, and a planar heating element is installed in the space to form a floor heating unit. , A triode plug is provided on the other side of the same one end portion, a triode plug and / or a buffer member is provided at a junction between the triode jack and the unit, and a triode plug is provided. 3. The floor heating unit according to claim 1 or 2, wherein the positional accuracy for inserting and connecting the three-pole jack is reduced.