KR101777785B1 - Floor Heating System Using Conductive Composite And Method for Constructing the Same - Google Patents

Abstract

The present invention relates to a floor heating system using a conductive composite which has a plurality of conductive composites made of a mixture of cement and carbon nano-tube to be embedded in cement mortar and is able to heat a desired partial area or an entire area of a floor by applying power to each of the conductive composites, and a construction method thereof. According to the present invention, the floor heating system comprises: a conductive composite made in a block shape and mixed of carbon nano-material with binder material, and embedded in a cement mortar layer placed in a bottom slab; a conductive material electrode installed within the conductive composite; and a connection member coupled to one side of the conductive composite, connected to an external power supply device, and having a plug inserted into the electrode and electrically connected to the electrode.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of constructing a floor heating system using a conductive composite,

The present invention relates to an apparatus for heating a floor using a conductive composite, and more particularly, to a system for heating a floor using a conductive composite, and more particularly, to a method for heating a floor by using a conductive composite material comprising a binder material such as cement mixed with a carbon nano- The present invention relates to a floor heating apparatus using a conductive composite which is capable of partially or entirely heating the floor by a desired area so as to be buried in the cement mortar and to apply power to the respective conductive complexes and a construction method thereof.

Generally, the ondol heating of a multi-family house is performed by installing a pipe circulating hot water on a slab structure constituting an indoor floor of a living room or a room, and filling the pipe with cement mortar to circulate hot water.

In the hot water circulating type ondol heating, the hot water is supplied to the hot water circulating pipe while being circulated by distributing the hot water heated by the external or self-boiler through a hot water distributor dividing the entire unit household into several sections.

However, such hot water circulating type ondol heating is disadvantageous in that the construction is complicated due to the complicated construction of the site, the maintenance is difficult, and the boiler or heater, which is a heat source facility, is expensive and hot water piping is required.

Conventionally, there has been known a method in which a surface heating element such as a conductive film or sheet in which a conductive material is mixed with a resin is placed on the floor to perform heating. However, such a surface heating element has a weak structural strength and is easily damaged The life span is short, frequent replacement and maintenance are required, and there is a problem that the whole structure needs to be reworked in order to repair if a problem occurs due to breakage or damage.

Further, the conventional planar heating body heating apparatus is vulnerable to moisture and fire, and there is a problem that the performance is not constantly developed according to the skill of the construction at the time of manufacture.

Published Patent Application No. 2003-0059602 (published on July 10, 2003) Registration No. 10-1497015 (Registered on February 23, 2015)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a conductive composite made by mixing carbon nanotubes such as carbon nanotubes with a binder material such as cement, The present invention also provides a floor heating apparatus using the conductive composite which is capable of heating the floor at low cost by allowing power to be applied to the conductive composite, and a construction method thereof.

It is another object of the present invention to provide a method of separating an area in which a conductive composite is applied as a heat insulating material to partially heat the floor by a desired area and even if a problem of heat generation due to breakage or damage occurs, And a method of constructing the same.

According to another aspect of the present invention, there is provided a floor heating apparatus comprising: a conductive composite body comprising a binder material and a carbon nano material in a block form and embedded in a cement mortar layer placed in a bottom slab; An electrode of a conductive material embedded in the conductive complex; A connection member coupled to one side of the conductive composite body, the connection member being connected to an external power supply unit and having a plug inserted into the electrode and electrically connected to the electrode; And a control unit.

According to one aspect of the present invention, a floor heating apparatus of the present invention includes: a cap body which is formed in a cylindrical shape and which is embedded in a cement mortar layer while covering an electrically conductive composite at an upper side of the conductive composite body; And a cap having a handle formed to be held by hand and a lid covering an upper surface of the cap body.

According to another aspect of the present invention, there is provided a floor heating apparatus comprising: a cap body having a top and a bottom surface in an opened cylindrical form and covering the conductive composite on the conductive composite body and embedded in the cement mortar layer; And a cap including a cover for opening and closing an open upper surface of the cap body.

A method of constructing the floor heating apparatus of the present invention includes:

(a) providing a composite die having a shape corresponding to the conductive composite on the top surface of the bottom slab;

(b) curing the cement mortar so that the composite formwork is embedded in the bottom slab;

(c) removing the composite mold when curing of the cement mortar is completed;

(d) burying the conductive composite at a location where the composite mold is removed;

(e) inserting a plug into the electrode of the conductive composite and engaging a connecting member;

And a control unit.

According to the present invention, when a plurality of conductive complexes and connecting members are embedded at predetermined intervals in a cement mortar layer applied on a slab on the floor and power is applied to the connecting member in an external power supply device, power is supplied to the conductive composite The conductive composite is heated and the floor is heated, so that the heating temperature can be easily controlled and the heating device can be easily constructed.

At this time, a heat insulating material is provided on the cement mortar layer on the bottom slab to divide the plurality of conductive complexes into regions, thereby partially heating only the desired region of the floor.

Also, if a heating problem of the conductive composite occurs due to failure, breakage or malfunction of the connecting member or the conductive composite during the use of the floor heating device, the cap is separated from the cement mortar layer or the upper surface of the cap is opened, The conductive composite can be easily replaced or repaired and used, thereby facilitating maintenance.

1 is a perspective view of a floor heating apparatus according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view showing the main components constituting the floor heating apparatus of Fig. 1; Fig.
3 is a sectional view showing a state in which the floor heating apparatus of FIG. 1 is installed.
4 is a cross-sectional view of a floor heating apparatus according to another embodiment of the present invention.
5 is a plan view showing an embodiment in which a floor heating apparatus according to the present invention is installed on the floor of a house.
6 is a front view showing an embodiment of a control panel for controlling a floor heating apparatus according to the present invention.
FIG. 7 is a graph showing a simulation result of a heating phenomenon when the conductive composite of the present invention is applied to the floor using a finite element analysis program (Abaqus).
8 to 10 are sectional views sequentially showing an embodiment of a method of applying a floor heating apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a floor heating apparatus and a construction method thereof using the conductive composite according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, a floor heating apparatus according to an embodiment of the present invention includes a cement mortar layer (not shown) made of a block material in which a carbon nano material is mixed with a binder material such as cement, And an electrode 11 inserted into the electrode 11 from above the conductive composite body 10 so as to be inserted into the conductive composite body 10. The conductive composite body 10 is embedded in the conductive composite body 10 and embedded in the conductive composite body 10, A connecting member 20 having a plug 22 electrically connected to the conductive composite 10 and a cap 30 installed to cover the upper portion of the conductive composite 10 and the connecting member 20.

The conductive composite 10 is formed into a block shape such as a hexahedron or a cylindrical shape by mixing water with cement, a carbon nano material such as carbon nanotube (CNT), silica fume, a surfactant, nylon fiber and the like.

The carbon nanotubes (CNTs) constituting the conductive composite 10 are nano-sized small particles in the form of tubes, and have a unique structural, chemical, mechanical and electrical properties due to a strong chemical bond of sp2. . Various types of carbon nanotubes can be used, but it is preferable to use multi-wall carbon nanotubes having various lengths.

In order to maintain a sufficient heat-generating performance of the conductive composite 10, the carbon nanotubes are preferably mixed in an amount of 1.2 to 2.0% by weight based on the weight of the cement. When the content of the carbon nanotubes exceeds 2.0 wt% with respect to the weight of the cement, the strength significantly decreases to increase the possibility of damage or breakage due to the impact, and when the content of the carbon nanotubes is less than 1.2 wt% It is impossible to exhibit a heat generating performance capable of satisfying the above requirements.

In order to properly disperse the carbon nanotubes in the cement matrix, the flow rate is preferably 100 to 120 mm, and the content of the silica fume is preferably 10 to 20% by weight based on the weight of the cement . It is also preferable that the surfactant is mixed at 1.6 to 2.0 wt% with respect to the weight of the cement so that the carbon nanotubes are appropriately dispersed in the cement matrix.

The conductive composite material 10 includes carbon nanotubes therein and generates heat when electricity is applied. Since the conductive composite body 10 is made of cement as a main material, the thermal expansion behavior of the cement mortar layer is similar to that of the cement mortar layer when buried in the cement mortar layer, so there is little possibility of damaging other structures due to thermal expansion. Since it has a pressure of 50 MPa or more, it has an advantage of excellent durability.

It was confirmed that the conductive composite material (10) can generate heat up to 100 ° C within 20 minutes at a maximum temperature of 50 ° C and a power consumption of 6.67.W within 20 minutes at a power consumption of 1.67W.

The electrode 11 is formed in a cylindrical shape having an open upper end and a lower end and is made of a metal such as copper having excellent conductivity and is embedded in the conductive composite body 10. The electrodes 11 are installed to penetrate from the upper end to the lower end of the conductive composite 10 so as to have substantially the same length as the height of the conductive composite 10.

The connecting member 20 is a component for connecting the electrode 11 of the conductive composite body 10 and an external power supply unit and is provided with fastening means 25 such as screws or bolts on the upper surface of the conductive composite body 10. [ A plug 22 having one end connected to the plug head 21 and a plug 22 connected to the external power supply device 22, And an electric wire connection part 23 connected to the electric wire 26 connecting with the electric wire.

A plurality of fastening holes 21a are formed on both sides of the plug head 21 to fasten the fastening means 25 while the fastening means 25 is fastened to the upper surface of the conductive composite body 10. [ A plurality of tapped holes 12 are formed. The inner circumferential surface of the tapped hole 12 is formed with a screw thread to which the fastening means is screwed.

In this embodiment, the plug head 21 is made of a metal material having excellent conductivity, and a wire connection portion 23 is connected to the plug head 21 to connect the plug 22 to the power supply device The plug head 21 may be made of an insulating material and the plug 22 may be connected to the electric wire 26 directly or indirectly.

The cap 30 is in the form of a rectangular parallelepiped and is detachably mounted on the conductive composite body 10 and the connecting member 20. The cap 30 in this embodiment includes a cap body 31 embedded in the cement mortar layer while covering the conductive composite 10 and the connecting member 20 on the conductive composite 10 and the connecting member 20, A handle 34 formed on an upper surface of the cap main body 31 so as to be held by a hand, and a lid 32 covering the upper surface of the cap main body.

A concave handle groove 33 is formed on the upper surface of the cap body 31 and a handle 34 is provided on the handle groove 33 for the user to hold the handle.

The lid 32 is rotatably coupled to the upper surface of the cap body 31 about the hinge shaft 32a to cover the upper surface of the cap body 31 so that the handle 33 and the handle 34 ) To prevent the flooring from becoming clogged.

 A wire guide groove 35 in which a wire 26 connected to the plug 22 is accommodated is formed at a lower end of the cap body 31 to be concave upward. When the cap body 31 is seated on the upper surface of the connecting member 20, the wire connecting portion 23 and the electric wire 26 of the connecting member 20 are inserted into the wire guide groove 35, ) Is stably installed without being inclined.

The cap 30 can be used as a cap 30 when a heating problem occurs due to failure or malfunction of the conductive composite 10 when the floor heating apparatus of the present invention is embedded in the cement mortar layer 2 on the floor slab 1, May be separated from the cement mortar layer 2 to replace or repair the connecting member 20 and then cover the cap 30 again.

In this embodiment, the cap 30 is configured to be detachable from the cement mortar layer 2 for repairing or replacing the conductive composite 10 or the connecting member 20, but as shown in another embodiment in Fig. 4, The conductive composite 10 or the connecting member 20 can be repaired or replaced only by opening and closing the lid 32 at the upper end of the cap body 31 without separating the main body 31 from the cement mortar layer 2 It might be.

The cap 30 of the floor heating apparatus shown in Fig. 4 is in the form of an opened top and bottom faces and is embedded in the cement mortar layer 2 above the conductive composite 10 and the connecting member 20 A cap body 31 and a lid 32 for opening and closing an open upper surface of the cap body 31. The lid 32 opens and closes the upper surface of the cap body 31 while rotating around the hinge axis 32a.

Therefore, when repair or replacement of the connecting member 20 is required, the lid 32 is rotated without separating the cap body 31 from the cement mortar layer 2 to open the upper surface of the cap 30, It is possible to easily perform an operation of repairing or replacing the main body 20.

As shown in FIG. 5, a floor heating apparatus of the present invention having the above-described structure is formed by laminating a plurality of cement mortar layers 2 on a floor slab 1 at predetermined intervals, The power is applied to the conductive composite body 10 through the plug 22 and the electrode 11 so that the conductive composite body 10 generates heat and heats the floor.

At this time, it is possible to partially heat the floor by disposing the heat insulating material 50 on the cement mortar layer 2 on the floor slab 1 and dividing the plurality of conductive composite bodies 10 into regions. For example, a plurality of conductive complexes 10 provided in a living room and a plurality of conductive complexes 10 provided in a living room, kitchen, etc. are partitioned by a heat insulating material 50 so that the heat of the conductive composite material 10 installed in the living room is not transmitted to the inside , Or vice versa.

6 shows a control panel for controlling the operation of the conductive composite 10 in each heating zone divided into a plurality of zones by the heat insulator 50 as described above, Controlled by a plurality of temperature control levers 61 and a power cut-off lever 62 for controlling the temperature of the room (for example, a living room, a room A, a room B and a kitchen) A plurality of temperature display windows 63 for displaying temperature, and the like.

As described above, in the floor heating apparatus of the present invention, since the conductive composite body 10, which is a heating element, is divided into a plurality of parts, and individual heating control can be performed, there is an advantage that partial heating is very easy for each area.

7 is a graph showing a simulation result of a heating phenomenon when the conductive composite body 10 of the present invention is applied to the floor using a finite element analysis program (Abaqus). The conductive composite body 10 having a size of 2.5 cm x 2.5 cm ) Were arranged at regular intervals of 1.8 m × 1.8 m in size and heated for 20 minutes at an initial temperature of 8 ° C. and a power of 1.67 W. As a result,

The above-mentioned floor heating apparatus of the present invention is constructed as follows.

A composite mold 71 on which the conductive composite 10 is to be installed and a heat insulating mold 73 on which the heat insulating material 50 is to be installed are placed on the floor slab 1 at an anchor bolt 74 ) With a fastening means. The composite mold 71 and the cap mold 72 have shapes corresponding to the conductive composite 10 and the cap 30, respectively.

Then, as shown in FIG. 9, the cement mortar is poured on the slab 1 to the height of the upper end of the composite formwork 71, and the concrete is vigorously vibrated after vibrating. The electric wire 26 is connected to the electric wire 40 through a hole formed in the lower end of the cap die 72.

When the wiring is completed, the cement mortar is poured again up to the upper end of the cap form 72, the vibration is gained and cured, and when the curing is completed, all the formworks are separated and removed as shown in Fig.

The conductive composite 10 is embedded in the space where the connection member 20 is connected to the electric wire 26 and the composite mold 71 is removed and the electrode 11 in the conductive composite body 10 is connected to the connection member 20 20 is inserted and the plug head 21 is fastened to the upper surface of the conductive composite 10 with the fastening means 25. [

When the cap 30 is inserted into the space where the cap mold 72 on the upper side of the connecting member 20 is removed and the heat insulating material 50 is installed in the space from which the heat insulating mold 73 is removed, And a floor material such as a long board is applied to the upper surface of the cement mortar layer 2 to finish.

3, when the cover 32 of the cap 30 is opened and the handle 34 is opened, as shown in Fig. 3, The connecting member 20 may be replaced or repaired by separating the cap 30 from the cement mortar layer 2 or by opening the lid 32 of the cap 30 as shown in Fig. Or the conductive composite 10 can be replaced or repaired and used. Therefore, there is no need to replace the entire heating element or to re-work the floor heating element.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.

1: Slab 2: Cement mortar layer
10: conductive composite 11: electrode
20: connecting member 21: plug head
22: plug 23:
25: fastening means 26:
30: cap 31: cap body
32: cover 34: handle
40: electric line piping 50: insulation
60: Control panel 71: Composite formwork
72: Cap Form 73: Insulation Formwork

Claims (10)

delete delete delete delete delete delete A conductive composite formed of a binder material and a carbon nano material in a block form and embedded in a cement mortar layer placed in the bottom slab; An electrode of a conductive material embedded in the conductive complex; And a connection member coupled to one side of the conductive composite body and having a plug connected to an external power supply unit and having a plug inserted in the electrode and electrically connected to the electrode,
(a) providing a composite die having a shape corresponding to the conductive composite on the top surface of the bottom slab;
(b) curing the cement mortar so that the composite formwork is embedded in the bottom slab;
(c) removing the composite mold when curing of the cement mortar is completed;
(d) burying the conductive composite at a location where the composite mold is removed;
(e) inserting a plug into the electrode of the conductive composite and engaging a connecting member;
Wherein the bottom heating apparatus comprises: [8] The method of claim 7, wherein a cap mold having a shape corresponding to the cap is formed on an upper portion of the composite mold installed in the step (a), and the cement mortar is primarily Wherein the cement mortar is secondarily installed up to the upper end of the cap form by installing an electric wire in the electric wire pipe so as to penetrate through the lower end of the cap form, . 9. The method of claim 8, wherein the composite mold and the cap form are removed prior to performing step (d) or before step (e), and the connecting member is connected to the end of the exposed wire Construction method of floor heating system. [7] The method of claim 7, wherein the step of inserting the plurality of conductive complexes comprises the step of inserting a heat insulating material to surround the plurality of conductive complexes when performing the step (a), and after the step (e) Wherein the heat insulating material is buried.

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