JPH0240404Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heat radiator for floor heating that is installed on the floor, connected to a heat source, and radiates heat.

[Conventional technology]

In recent years, underfloor heating using heat pipes has been attracting attention. Compared to the conventional hot water circulation system, this
The temperature distribution can be made uniform, and a low-temperature heat source can be used without requiring large amounts of high-temperature water for heating.
Another advantage is that the weight of the heat exchanger can be reduced, and the heat exchanger does not generate airlock.

[Problems to be solved]

However, underfloor heating using heat pipes requires the installation of a heat dissipation section, similar to the conventional hot water circulation type.
That is, since the heat pipes are installed on-site, the installation work is time-consuming, and it takes days to dry and harden the heat storage material, resulting in a long construction period. Furthermore, the installation accuracy varies depending on the operator, and there is a drawback that temperature distribution and heat transmission loss vary.

In contrast, a heat pipe has been proposed in which the heat pipe is formed in advance into a panel shape of a predetermined width and a heat insulating material is attached to the lower surface of the heat pipe. However, when installing this product on the floor, it is necessary to provide a layer of heat storage material such as plaster on the top of the panel in order to protect the heat panel, store heat, and equalize the floor finish material. Since the process is carried out at Furthermore, this method has the disadvantage that heat transmission loss is large because the heat insulating material is provided directly on the lower surface of the heat panel.

[Means for solving problems]

The present invention was made in view of such drawbacks, and consists of a heating section and a plurality of condensing tubes in the heat storage material, and a heat sink is provided in contact with the condensing tubes, and the condensing tubes are connected to the heat dissipating tubes. A heat radiator for floor heating in which a heat pipe arranged in a recess provided in a plate is buried, and a heat insulating material layer is provided below the heat storage material,
The object of the present invention is to provide a heat radiator for floor heating, wherein the heat storage material is made of gypsum foam concrete with a substantially flat upper surface.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the heat radiator for floor heating of the present invention, and FIG. 2 is a sectional view thereof.

The heat radiating body of the present invention shown in these figures is composed of a heat radiating part 1 formed into a plate shape by embedding a heat pipe 3 in a heat storage material 2, and a heat insulating material layer 8 provided on the lower surface of the heat radiating part 1. be done.

The heat pipe 3 is made of metal such as copper or aluminum, and as shown in FIG. 3, it has a heating section 4 consisting of a double tube of an inner tube 4a and an outer tube 4b, and a plurality of condensing tubes 5 consisting of thin tubes. Each condensing tube 5 is connected to the outer tube 4b at its base to form one sealed container as a whole, and an appropriate amount of working fluid such as Freon is filled inside. Further, the condensing tube 5 is provided with a heat dissipation plate 6 in order to improve heat dissipation and make the temperature distribution more uniform. The heat dissipation plate 6 is made by bending a plate-like member into an uneven shape to form a plurality of recesses 6a, and as shown in FIG. 4, the outer wall of the condensing tube 5 is attached to the recesses 6a by welding or the like. Note that even if the heat sink 6 is provided either above or below the condensing pipe 5,
Alternatively, it may be provided on both the upper and lower sides.

The heat pipe 3 is held in the heat storage material 2 with a slight inclination as shown in FIG. 2, and the inner pipe 4a is connected to a heat source such as a boiler, and heat is radiated by flowing hot water or the like. That is, when the outer tube 4b is heated by hot water or the like, the working fluid accumulated inside evaporates, and the relatively high pressure steam rapidly moves to the condensing tube 5 on the low pressure side, causing the tube wall to evaporate. The working fluid condenses and releases latent heat of vaporization, and the working fluid that becomes droplets flows back into the outer tube 4b along the slope. Heat exchange and heat transfer occur through this cycle of evaporation, condensation, and reflux.
The heat of the hot water supplied to the inner tube 4a is rapidly released from the condensing tube 5.

Note that a wick made of felt, fiber, etc. may be provided in the condensing tube 5, and in this case,
Since the working fluid flows back due to capillary action, there is no need to tilt the heat pipe.

The heat storage material 2 is made of, for example, gypsum foam concrete, and has the function of firmly holding the heat pipe 3, storing the emitted heat, and reducing temperature changes, and also has the function of setting the floor surface, i.e. It has the function of supporting floor covering materials.

The heat insulating material layer 8 is made of a hard heat insulating material having a high heat insulating property, such as a foamed heat insulating material such as urethane foam, and is provided in close contact with the lower surface of the heat radiating section 1 . In this embodiment, it is provided integrally with the heat radiation section 1, but it may be provided separately.

Next, an example of the manufacturing process of the heat sink of the present invention will be described with reference to the above embodiment. First, a heat insulating material previously formed in a plate shape is inserted into a mold whose interior has the desired shape of the heat radiator, at a position that will be the bottom side of the heat radiator, and then a heat pipe is inserted into the remaining space. Insert it with a suitable spacer and fix it with a slight inclination to the heat pipe. Then, a heat storage material such as gypsum is poured into the mold and allowed to harden. At this time, as shown in FIG. 1, the end of the inner tube of the heat pipe is made to protrude outside as a connecting part 7 with other pipes.
For example, part or all of the outer circumference of the heat sink may be exposed from the heat storage material.

After curing, the heat sink of the present invention is obtained by removing the mold. An example of the size of the heat sink obtained in this way is 1650 mm long, 800 mm wide, and 70 mm thick.
mm. The breakdown of the thickness is: insulation layer 30mm, heat storage material (bottom side of heat pipe) 10mm, heat pipe 15mm,
The heat storage material (upper surface side of the heat pipe) is 15 mm.

Next, regarding the state in which the heat sink of the present invention is installed,
This will be explained with reference to FIGS. 5 and 6. here,
FIG. 5 is a sectional view showing an example of a floor installation state of the heat radiator of the present invention, and FIG. 6 is a plan view showing an example of piping.

In the system shown in FIG. 5, a heat radiator is placed on a receiving plate 10 supported by small joists 9 with the heat insulating material layer 8 facing downward, and a floor finish such as a carpet is placed on the upper surface of the heat radiator 1. Material 11 has been laid. An appropriate gap can be provided between the heat radiators, and this can be used as a piping space. Further, this gap may be filled with plaster or the like. However, the heat radiator may be placed in close contact with each other except for the piping space.

The piping shown in Fig. 6 is one in which the inner tubes of six heat radiators are connected in series so as to form a U-shape as a whole, and the heating part is located in the center of the room.
A feature is that the piping 12 can be short. However,
The piping is not limited to this and can be done as appropriate.

In the above embodiment, a heat pipe having a double pipe heating section and a comb-shaped condensing pipe was used, but the present invention can use heat pipes of various shapes and structures. Can be done. For example, the condensing tube may be shaped like a grid. Further, the inner tube of the heating section may have a bellows structure or a spiral structure, and the heating section may have another structure instead of a double tube.

[Effect of idea]

As explained above, in the heat radiator for floor heating according to the present invention, the heat storage material in which the heat pipe is buried is made of gypsum foam concrete with a flat top surface, so even if the heat radiator is installed as a floor structure material, Since the floor finishing material can be installed directly without the need for heat pipe protection measures, the installation work is simpler than in the past, and the construction period can be significantly shortened.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an embodiment of the heat radiator for floor heating of the present invention, Fig. 2 is a sectional view thereof, and Fig. 3
The figure is a partially cutaway plan view showing an example of the heat pipe used in the above embodiment, FIG. 4 is a partially enlarged cross-sectional view, and FIG. FIG. 6 is a plan view showing an example of the piping. DESCRIPTION OF SYMBOLS 1... Heat radiation part, 2... Heat storage material, 3... Heat pipe, 4... Heating part, 4a... Inner tube, 4b... Outer tube, 5... Condensing tube, 6... Heat sink, 6a... ... recessed portion, 7... joint portion, 8... heat insulating material layer.

Claims (1)

[Scope of Claim for Utility Model Registration] The heat storage material is composed of a heating section and a plurality of condensing tubes, a heat sink is provided in contact with the condensing tubes, and the condensing tubes are placed in a recess provided in the heat sink. In the heat radiator for floor heating, which has a heat pipe buried therein and a heat insulating layer provided below the heat storage material, the heat storage material is made of gypsum foam concrete with a substantially flat upper surface. Features of a heat radiator for floor heating.