JP4398333B2 - Heating device - Google Patents

Description

The present invention relates to a heating device in which a heat generating unit is unitized.

In general, in snowfall areas and cold regions, snow melting devices are attached to road surfaces such as roads, parking lots, and entrances to prevent snow removal and freezing on the road surface. As this snow melting device, a device having a structure in which ground water is fountained on a road surface or a hot water pipe or an electric heater wire is buried in the ground is used (for example, Patent Document 1). The groundwater fountain system is used on roads and parking lots where automobiles run, but there are problems such as mud splashing on pedestrians, clogging at the injection port, and red rust caused by groundwater containing iron. There are problems such as adhesion.

In addition, the method of burying hot water pipes in the ground has a problem that construction is troublesome and incidental facilities such as a boiler and a pump become large. In addition, the method of embedding the electric heater wire in the ground is troublesome because the electric heater wire is fixed to the reinforcing bars previously combined in a lattice form by tying the electric heater wire with a binding band.

In addition, hot water pipes and electric heater wires buried in the ground may break or break due to earthquakes or crustal movements. When such a situation occurs, the hot water pipe or electric heater wire is embedded and fixed in asphalt or concrete, so it is difficult to peel it off and expose only the pipe or heater wire to partially repair it. Yes, it is usually left as it is.

In addition, when the electric heater wire 1 is meandered and embedded in the underground 2 as shown in FIG. 11 (B), the temperature of the road surface 3 is kept above the minimum temperature that does not freeze as shown in FIG. 11 (A). For this, it is necessary to narrow the arrangement interval of the electric heater wires 1. In other words, the surface temperature of the road surface 3 due to the heat generated from the electric heater wire 1 having a circular cross section becomes a waveform, the sine curve being the highest immediately above the electric heater wire 1 and the lowest intermediate between the adjacent electric heater wires 1 and 1. The temperature distribution has a waveform.

For this reason, in order to keep the road surface 3 at a temperature that does not cause snow removal or freezing, it is necessary to keep the intermediate temperature between the electric heater wires 1 and 1 having the lowest temperature above the lowest temperature that is not frozen, for example, about 3 ° C. Because there is. As a result, the portion directly above the electric heater wire 1 has a temperature higher than necessary, and there is a problem that the heat of the portion indicated by the cross wire is wasted and the running cost is increased.

Conventional floor heating in the room is often used in a hot water mat type that circulates hot water under the floor and a heater panel type in which an electric heater is embedded. However, the hot water mat type, which circulates hot water, has a hot water pipe meandering under the floor, and the hot water boiled in the boiler is circulated by a pump, so the equipment and operating costs are high and the load from the floor is added. Therefore, there is a risk of water leakage due to cracks in the piping during long-term use. The heater panel type with an embedded electric heater is also expensive to construct, and there is a danger of accidentally disconnecting the heating wire when nails or screws are attached to the floor. Moreover, in places where heavy objects are applied, there is a risk of disconnection, and only the disconnection portion could not be repaired.
JP 2000-265412 A

The present invention improves the above problems, unitizes the heat generation part, is easy to install, has high strength and can prevent earthquakes, crustal deformation, and disconnection due to heavy objects, and is easy to repair partially, and has good heating efficiency The present invention provides a heating device with a low running cost.

The heating device according to claim 1 of the present invention seals the inside of a rectangular tube formed by detachably combining an upper member and a lower member formed of an aluminum extrusion mold divided into two vertically. The heater wire insertion part is integrally extruded at the inner corner of the rectangular pipe, and an electric heater wire is inserted into the heater wire insertion part to form a heating unit. embedded or attached to the back surface of the floor plate to the by energizing the electric heater wire to heat the rectangular tubular pipe, is characterized in heating the road surface or floor surface that Sessu on this surface.

The heating device according to claim 2 of the present invention is the heating device according to claim 1, wherein the reinforcing ribs are provided at the central portions of the upper member and the lower member so that the reinforcing ribs come into contact with each other when the rectangular tube is formed. It is characterized in that it is formed.

Further, in the heating device according to claim 3 , in claim 1, a heat radiating plate made of a metal material having a larger thermal conductivity than the upper surface is joined to the flat portion of the upper surface of the rectangular pipe. It is characterized by.

According to the heating device of the first aspect of the present invention, the electric heater wire is provided in close contact with the inner side surface of the rectangular tube formed of aluminum having excellent thermal conductivity. Since heat is transmitted to the rectangular tube and the inside is sealed, the internal temperature rapidly rises and heat is stored, and the upper surface of the rectangular tube is maintained at a substantially uniform temperature.

As described above, heat is transmitted from the wide surface of the rectangular pipe to the ground or the back surface of the floor board, and the road surface and the floor surface are heated almost uniformly, so that the heat loss is small and the running cost can be reduced. In addition, it is easy to construct because it is only necessary to embed a heat generating unit with a built-in electric heater wire in a rectangular tube pipe in the ground or attach it under the floor at a predetermined interval. Furthermore, since it is formed of a rectangular pipe, it has high strength and can prevent the electric heater wire from being disconnected even if an earthquake, crustal movement, or heavy load is applied. In addition, since the electric heater wire is installed in a sealed rectangular tube, it can prevent rainwater and groundwater from entering, and can be operated stably over a long period of time without short circuit or disconnection due to corrosion. .

In addition, since the rectangular pipe is made of aluminum and the heater wire insertion portion is integrally extruded on the inner surface thereof, the molding is easy and the electric heater wire can be easily attached . Furthermore, since the rectangular pipe is formed by detachably combining the upper and lower divided upper and lower members, in the unlikely event that the electric heater wire is disconnected, asphalt, concrete, It is possible to repair the electric heater wire by peeling the floor board, exposing the heat generating knit, and removing the upper member, and partial repair is also possible compared to the conventional structure where the electric heater wire is directly embedded There is .

Further, according to the heating device of claim 2, even if the weight of the automobile traveling on the road surface is added, it is received by the rectangular pipe, and the reinforcing ribs provided in the central portion of the upper member and the lower member are in contact with each other. Since it is a reinforcing material that receives a load, the strength of the rectangular pipe is high and it is difficult to deform. For this reason, since no load is directly applied to the electric heater wire from the outside, it is possible to prevent breakage and disconnection due to running of an automobile, occurrence of an earthquake, and fluctuation of the crust .

According to the heating device of the third aspect, since the heat sink made of a metal material having a larger thermal conductivity than the upper surface is attached to the upper surface of the rectangular tube, Heat is transferred rapidly, and since the heat radiation area upward is wide, it can be heated efficiently and uniformly.

An electric heater wire was built in a rectangular pipe and a load heating device was built in which a heat generating unit was buried in the ground.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. In the figure, reference numeral 5 denotes a heat generating unit, which is a side cap in which an electric heater wire 1 is attached to an inner side of a rectangular tube 6 formed of an aluminum extrusion mold, and a side surface is opened at one end thereof as shown in FIGS. 7A is provided, and a side cap 7B having an open side and bottom is attached to the other end.

Further, the upper end of a J-shaped square pipe 6A is attached to the bottom surface of the side cap 7B, and the terminal box 10 containing the terminal block 9 is connected to the other end of the square pipe 6A. The electric heater wire 1 is attached to the inner side of the cable, and an end of the electric heater wire 1 is connected to the terminal block 9 to constitute a load heating device 11.

As shown in FIG. 1, the rectangular pipes 6 and 6A are formed by combining a U-shaped upper member 15A and a lower member 15B formed of an aluminum extrusion mold material. A concave reinforcing rib 16 is formed at the center of the upper member 15A and the lower member 15B, and a line insertion portion 17 is formed at each inner corner. Further, a concave groove portion 18 having a semicircular cross section is formed at both lower ends of the upper member 15A, and a convex strip portion 19 having a semicircular cross section is formed at both upper ends of the lower member 15B, and the convex strip portion 19 is formed into the concave groove portion 18. By fitting, it is detachably connected.

The electric heater wire 1 is formed by covering the copper stranded wire 21 with an insulating tube 22, and this is applied to a wire insertion portion 17 formed at both inner corner portions of the upper member 15A constituting the rectangular pipes 6 and 6A. Push in and insert, make U-turn inside the side cap 7A, and pull out from the end of the J-shaped square tube 6A. Next, the upper member 15 </ b> A is covered with the lower member 15 </ b> B, and the convex strip 19 is fitted into the concave groove 18 to form a rectangular tube.

Also, as shown in FIGS. 2 and 3, both ends of the electric heater wire 1 drawn out from the end of the J-shaped rectangular tube 6A are connected to a terminal block 9 in the terminal box 10, and the rectangular tube 6 The inside of the J-shaped square cylindrical pipe 6A is sealed.

As shown in FIG. 4, the load heating device 11 formed in this way is embedded in the ground 2 at a predetermined interval, and the adjacent terminal blocks 9 and 9 are connected to each other via a control device (not shown). Connect to a power source.

The load heating device 11 configured as described above generates heat when the electric heater wire 1 is energized from the power source via the control device when the temperature drops to zero or during snowfall. Since the electric heater wire 1 is provided in close contact with the wire insertion portion 17 provided on the inner surface of the rectangular tube 6 made of aluminum having excellent thermal conductivity, the heat is quickly formed into a rectangular tube. Since both ends are closed by the side cap 7A and the terminal box 10 and the inside is sealed, the internal temperature rapidly rises and heat is stored, and the surface of the rectangular pipe 6 is Is maintained at a substantially uniform temperature.

As described above, since the surface of the rectangular pipe 6 is maintained at a substantially uniform temperature, heat is transferred from the wide surface to the underground 2, and the square 3 is shown on the road surface 3 as shown in FIG. The pipe 6 is heated almost uniformly along the upper surface. For this reason, the intermediate temperature between the adjacent heat generating units 5 and 5 is the lowest temperature, but it is only necessary to keep this portion above the lowest temperature that does not freeze.

As a result, the portion directly above the heat generating unit 5 only needs to be held slightly higher than the minimum temperature, so the portion where heat is wasted becomes the portion indicated by the cross line, and the electric heater wire shown in FIG. As compared with the conventional apparatus in which 1 is directly embedded, energy saving is achieved and the running cost can be reduced.

In addition, since the electric heater wire 1 only needs to embed the heat generating unit 5 at a predetermined interval, it is not necessary to reinforce the reinforcing bars in a lattice pattern as in the prior art, and the construction is easy. Further, even if the weight of the automobile traveling on the road surface 3 is added, it is received by the rectangular pipe 6 and the concave reinforcing ribs 16 and 16 provided at the central portions of the upper member 15A and the lower member 15B come into contact with each other to apply the load. Since the reinforcing material is received, the strength of the rectangular pipe 6 is high and is not easily deformed. For this reason, since no load is directly applied to the electric heater wire 1 from the outside, it is possible to prevent breakage or disconnection due to running of an automobile, occurrence of an earthquake, or fluctuation of the crust.

In addition, since the electric heater wire 1 is installed in the sealed rectangular pipes 6 and 6A, the infiltration of rainwater and groundwater is prevented, and it is stably operated over a long period without short circuit or disconnection due to corrosion. be able to.

If the electric heater wire 1 is broken for some reason, the electric heater wire 1 can be repaired by removing asphalt or concrete, exposing the heat generating unit 5 and removing the upper member 15A. Therefore, partial repair is also possible as compared with the conventional structure in which the electric heater wire 1 is directly embedded.

FIG. 5 shows another embodiment of the present invention, in which square-shaped pipes 6 and 6A are formed by combining a U-shaped upper member 15A and a lower member 15B which are not provided with concave reinforcing ribs 16. It is. Further, the electric heater wires 1 are respectively inserted into the wire insertion portions 17 formed at the four corner portions to increase the heat generation amount.

FIG. 6 shows another embodiment of the present invention. The rectangular pipes 6 and 6A are formed by dividing the upper member 15A and the lower member 15B into convex sections and combining them to form an E shape. Is.

FIG. 7 shows another embodiment of the present invention, in which the heat generating units 5 and 5 are integrally embedded in the lower part of the concrete plate 23. This can be done simply by arranging the heat generating unit integrated concrete plates 23 manufactured in advance in the factory at the front door or on the stairs. The heat generating unit 5 is energized to the electric heater wire 1 so that heat is transmitted from the surface of the rectangular pipe 6 to the inside of the concrete plate 23, the concrete surface is heated, and snow melting and freezing can be prevented.

FIG. 8 shows another embodiment of the present invention, in which a short heat generating unit 5 is embedded under a stepping stone 24 in a garden. This is because the stepping stone 24 is heated, so that the snow falling on it can be melted and frozen.

FIG. 9 shows another embodiment of the present invention, in which a heat generating unit in which a heat radiating plate 26 made of aluminum or the like, which is wider than the upper surface and is excellent in thermal conductivity, is joined to the upper surface of a rectangular pipe 6. 5. This is because heat of the rectangular pipe 6 is rapidly transmitted from its upper surface to the heat radiating plate 26, and since the heat radiating area of the heat radiating plate 26 is wide, it is efficiently transmitted upward and can be heated uniformly. For this reason, the embedding interval of the heat generating unit 5 can be widened.

FIG. 10 shows another embodiment of the present invention used for floor heating of a house, in which the heat generating unit 5 provided with the heat radiating plate 26 shown in FIG. The heat generating unit 5 is mounted on the large pull 28 attached on the bundle 29 in a direction orthogonal thereto, and the heat generating unit 5 can function as a joist. A foam heat insulating material 30 is sprayed around the heat generating unit 5 to insulate the side surface and the bottom surface.

In this floor heating, since the inside of the rectangular tube 6 is sealed, when the electric heater wire 1 is energized, the internal temperature rapidly rises and heat is stored, and the heat sink 26 is discharged from the upper surface of the rectangular tube 6. Heat is rapidly transferred to the. Since the heat radiating plate 26 is attached in close contact with the back surface of the floor plate 27, the floor surface can be heated substantially uniformly.

In addition, in the said description, although it showed about the case where it installed in road surfaces, such as a road, a parking lot, and a front door, it can embed | buy in the ground of an agricultural house and can also be used as heating of a house.

It is sectional drawing which shows the heat-emitting unit of the load heating apparatus by the Example of this invention. It is a top view which shows the load heating apparatus using the heat generating unit of FIG. It is a side view which shows the load heating apparatus of FIG. (A) is a graph which shows the surface temperature of a road surface, (B) is explanatory drawing which shows the embedment state of the heat generating unit. It is sectional drawing which shows the heat generating unit by the other Example of this invention. It is sectional drawing which shows the heat-emitting unit by other Example from which this invention differs. It is sectional drawing which shows the heat generating unit integrated concrete board by the other Example from which this invention differs. It is sectional drawing which shows the state which attached the heat generating unit under the stepping stone by the other Example from which this invention differs. It is sectional drawing which shows the heat generating unit which attached the heat sink by the other Example from which this invention differs. It is sectional drawing applied to the floor heating system by another Example from which this invention differs. (A) is a graph which shows the surface temperature of the road surface by the conventional electric heater wire, (B) is explanatory drawing which shows the embedding state of the conventional electric heater wire.

1 Electric heater wire
2 underground
3 road surface
5 Heat generation unit
6 Square tubular pipe
6A J-shaped square tube
7A side cap
7B Side cap
9 Terminal block
10 Terminal box
11 Road heating equipment
15A upper part
15B lower part
16 Concave ribs
17 Wire insertion part
18 Concave groove
19 Projection
21 Copper twisted wire
22 Insulation tube
23 Concrete board
24 Stepping stones
26 Heat sink
27 Floor board
28 large discount
29 bundles
30 Foam insulation

Claims (3)

The inside of the rectangular tube formed by detachably combining the upper member and the lower member formed of an aluminum extrusion mold divided into two vertically is sealed, and the heater wire is inserted into the inner corner of the rectangular tube. The heating part is integrally formed by extrusion, and an electric heater wire is inserted into the heater wire insertion part to form a heating unit, and the heating unit is buried in the ground or attached to the back surface of the floor board, the square tube-shaped pipe and heated by supplying an electric current to the line, a heating apparatus characterized by heating the road surface or floor surface that Sessu on this surface. 2. The heating device according to claim 1 , wherein reinforcing ribs are provided in the central portions of the upper member and the lower member so that the reinforcing ribs come into contact with each other when the rectangular pipe is formed .   2. The heating device according to claim 1, wherein a heat sink made of a metal material having a larger thermal conductivity than the upper surface is joined to a flat portion on the upper surface of the rectangular pipe.