JPH0439531A - Structure for heating bathroom floor - Google Patents

Abstract

PURPOSE:To heat the floor section in a unit bath structure without danger by a setup wherein heat pipes are buried under the bathroom floor, a duct is provided along a bathtub wall, a channel is opened from a hot water supply pipe from a boiler for additional heating to the faucet in the bathtub through the duct, and the heat-collecting parts of the heat pipes are connected with the duct. CONSTITUTION:A plurality of heat pipes 5 are buried under the bathroom floor 3. A duct 6 is attached to the outer side of the bathtub 1 on the side of the bathroom floor and longitudinally along the lower part of the bathtub 1. A hot water supply pipe 4 is connected to one end of the duct 6 and the other end of the duct 6 is connected to a hot-water faucet 7 provided in the bathtub 1. The heat-collecting parts (vaporizing parts) 51 of the respective heat pipes 5 are inserted into the duct 6 and placed in contact with hot water all around. The heat-collecting parts 51 of the heat pipes 5 collect heat directly from the hot water in the duct 6 and transmit the heat to heat-releasing parts 52 buried under the bathroom floor; the heating can be achieved with an increased effect according to this constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heating structure for a washing area floor suitable for a bathroom, particularly a unit bath.

[Conventional technology]

In cold regions during the winter, the floor of the bathroom washing area can be very cold.
I often feel uncomfortable when taking a bath.

Traditionally, electric heater-type mats have been commercially available as floor heating equipment for bathroom washing areas, but it is dangerous to use electric appliances such as heaters around water areas such as bathrooms, and
There are complications such as the need for regular cleaning for hygiene reasons. In addition, since it uses only one type of electric heater, the usage cost is not low.

Unit baths with electric heaters embedded in the floor of the washing area are also known, but like the mats mentioned above, it is not recommended to use the heaters near water, and they also have the disadvantage of being high in both manufacturing and usage costs. be.

In view of these conventional problems, the present invention provides a bathroom floor heating structure that is free from the dangers of electric heaters, has low manufacturing and usage costs, and is capable of heating the washing area floor to an appropriate temperature. That is.

[Means for resolving issues]

To this end, the present invention utilizes a heat pipe to transfer the heat of hot water supplied from a reheating boiler to the floor of the washing area, thereby heating the floor. In addition to embedding a heat pipe in the floor of the bathroom washing area, a duct is installed along the bathtub wall, and the hot water supply pipe from the reheating boiler is connected to one end of the duct, and the other end of the duct is connected to the hot water supply inlet of the bathtub. The heat collecting portion of the heat pipe is connected to the duct.

The heat collecting part of the heat pipe may be connected to the duct by being in contact with the duct wall or buried, but in order to efficiently collect heat from the hot water, it is preferable to have it in direct contact with the hot water inside the duct. It is preferable to do so. For example, when attempting to collect heat from hot water in a bathtub using a heat pipe, the heat collecting part of the heat pipe cannot be installed in a state where it protrudes into the bathtub; Direct contact requires special construction. In this regard, the present invention collects heat from hot water by connecting the heat pipe to the duct instead of the bathtub, so the heat collecting part of the heat pipe can be inserted into the duct as is, and the hot water can be connected to the hot water with a sufficient contact area. can be brought into contact.

Further, the flooring material of the washing area is preferably composed of a synthetic resin board made of a synthetic resin mixed with one or more types of metal, ceramic, or other inorganic powder having higher thermal conductivity than the resin.

Furthermore, in order to prevent damage to the flooring and wall materials due to expansion of the heat pipe, it is preferable to cover the end of the heat pipe on the washing area floor side with an elastic coating phase.

[Effect]

The heat collecting part (evaporating part) of the heat pipe collects heat from the hot water in the duct either directly or indirectly through the wall of the duct, and transmits this to the heat dissipating part (condensing part) embedded inside the washing area floor. . The floor is heated by the heat radiated from the heat radiating section.

The floor of the bathroom washing area only needs to be heated to a level that does not feel cold when stepping into the bathroom when taking a bath, and the floor should be heated to at least that temperature by the action of the heat pipe. I can do it. In particular, the water in the bathtub is usually heated on a hot day, and the bathtub is often not bathed immediately after it is boiled, so the floor is appropriately heated by the action of the heat pipe before bathing.

In particular, in the present invention, instead of collecting heat directly from the hot water in the bathtub, heat is collected from the hot water that is being supplied from the reheating boiler, and by installing a duct in contact with the bathtub, the hot water in the bathtub is Since the heat is applied inside the duct, there is an advantage that the heat collecting temperature by the heat pipe is high. Furthermore, since it becomes difficult to collect heat when reheating by the boiler is stopped, there is an advantage that the temperature of the hot water in the bathtub decreases less than when heat is collected directly from the hot water in the bathtub.

When the flooring of the washing area is made of synthetic resin boards, the flooring is made by adding one or two types of metal, ceramic, or other inorganic powders that have higher thermal conductivity than the resin to the synthetic resin.
By using a synthetic resin board mixed with at least one species, the thermal conductivity of the floor material can be increased and the floor can be heated more efficiently.

When a heat pipe is operated, it stretches in the axial direction due to linear expansion, and if the end of the heat pipe is formed by crimping the pipe, the end may bulge in the radial direction, etc. If the heat pipe expands in this way, there is a risk that the flooring or wall material that the end of the heat pipe is in contact with will be damaged. In this regard, if the end of the heat pipe is covered with an elastic material such as silicone rubber, even if the heat pipe expands, the elastic covering material will absorb the expansion and properly prevent damage to flooring and wall materials. be able to.

〔Example〕

1 to 3 show an embodiment of the present invention, in which 1 is a bathtub, 2 is a washing area, 3 is a floor thereof, and 4 is a hot water pipe from a boiler for reheating.

A plurality of heat pipes 5 are embedded inside the floor portion 3.

On the other hand, a duct 6 is attached to the outer lower part of the bathtub 1 on the washing water side and extends in the longitudinal direction of the bathtub.

The hot water supply pipe 4 is connected to one end of the duct 6, and the other end of the duct 6 communicates with a hot water supply lower provided in the bathtub 1.

And the heat collecting part 51 (evaporation part) of each heat pipe 5
As shown in FIG. 3, the heat collecting portion 51 is inserted into the duct 6 so that the entire circumference of the heat collecting portion 51 comes into contact with hot water. In contrast to the heat collecting section 51, a heat pipe portion located inside the floor section 3 constitutes a heat dissipating section 52 (condensing section).

In the above embodiment, the heat collecting part 51 of the heat pipe 5 directly collects heat from the hot water in the duct 6, and transmits this heat to the heat radiating part 52 embedded inside the washing area floor. Therefore, compared to the case where heat is collected from hot water in the bathtub 1, heat can be collected from hot water at a higher temperature, and the heating effect by the heat pipe 5 can be further enhanced.

Moreover, since the heat of the hot water in the bathtub 1 is also applied to the inside of the duct 6, it is more advantageous in ensuring the heat collection temperature.

Furthermore, when reheating by the boiler is stopped, it becomes difficult for the heat collection unit 51 to collect heat, so the temperature of the hot water in the bathtub decreases less than when heat is collected from the hot water in the bathtub.

Note that the connection structure of the heat collecting portion 51 to the duct 6 is arbitrary, and for example, the connection may be made using a mounting bracket 8 as shown in FIG. 4.

A mounting bracket 8 is fixed to the heat collecting part 51, and the heat collecting part 51 is
It is connected to the side wall 61 of the duct 6 via this fitting 8. The cylindrical mounting bracket 8 has an inner diameter such that an appropriate gap S is formed between it and the heat pipe inserted therein, and an end portion 81 that should be located outside the duct fits into the heat pipe. It is configured to match. The end portion 81
The heat collecting portion 51 of the heat pipe that is fitted and fixed is located inside the mounting fitting 8. And heat pipe 5
is connected to the duct 6 by fitting and fixing the mounting bracket 8 into a mounting hole 62 provided through the side wall 61.

Since the hot water in the duct enters the inside of the mounting bracket 8, the entire circumference of the heat collecting portion 51 can be brought into contact with the hot water.

FIG. 5 shows another example of connection between the heat pipe 4 and the duct 6, in which the heat collecting plate 13 is fixed by welding or the like to the tip of the heat collecting part 51 penetrating the side wall 61 of the duct. is installed so as to be in close contact with the inner wall of the duct. The heat pipe on the outside of the duct is provided with a flange portion 14 having a plurality of screw holes, and the heat pipe 5 is fixed to the duct 6 by tightening fixing bolts 15 attached to each of the screw holes. In addition, 16 is the mounting hole 6
This is a sealing member provided between the heat pipe 2 and the heat pipe 5.

In the above connection structure, the heat collecting plate 13 can be flush with the duct inner wall surface by providing a recess in the inner wall of the duct and fitting the heat collecting plate 13 into the recess.

Although the heat collection efficiency is inferior, it is also possible to have a structure in which the heat collection part 51 is brought into contact with or buried in the wall of the duct 6, as shown in FIG. 6. In addition, there is no limitation to the structure of the duct 6,
As shown in FIG. 3, it may be formed by fixing an angular member to the bathtub wall, or as shown in FIG. It may also be formed by fixing. Further, the mounting position and length of the duct 6 are not particularly limited, and the duct 6 may be provided at the bottom of the bathtub or at a portion in the longitudinal direction of the bathtub.

In each of the above embodiments, the mounting structure of the heat pipe to the floor material is arbitrary, but for example, FIGS.
) can have a structure as shown in FIG.

Among these, in FIG. 7(a), the heat pipe 5 is attached to the mounting bracket 1.
(b) is an example in which the heat pipe 5 is fixed to the back surface of the flooring material 31 using 1, (b) is an example in which the heat pipe 5 is embedded in the back surface of the flooring material 31, and (c) is an example in which the heat pipe 5 is placed on the back surface of the flooring material 31 and the surrounding area is filled. This is an example in which the heat pipe 5 is fixed with the heat pipe 5.
It can be configured as appropriate, such as completely buried inside the flooring material.

In the heating structure of the present invention, it is preferable that heat be efficiently radiated from the heat radiating portion of the heat pipe to the flooring material. 8th
Figures 11 to 11 show an example of a structure for attaching a heat pipe to a flooring material for this purpose, and show a half-cylindrical holding part 171 that should be in close contact with the heat pipe 5 and a hole that should be in close contact with the flooring material. Metal holding plate 1 equipped with a heat sink part 172
7, the heat pipe 5 is brought into contact with the back surface of the floor material 3 using this presser plate 17, and the presser plate 17 is fixed to the back surface of the floor material 3 with a resin 18 (for example, FRP resin) or the like.

Of these, the one shown in FIGS. 8 and 9 is the presser plate 17.
The heat dissipation plate portion 171 is made of a plate-like member having a plurality of holes 173.

In addition, what is shown in FIGS. 10 and 11 is a presser plate 1.
7 is made of wire mesh.

In addition to resin, the holding plate 17 is made of mortar or the like to hold the floor material 3.
Can be attached to the back of the

According to such a structure, part of the heat radiated from the heat radiating part 52 is directly transmitted to the flooring 3, and the other part is transmitted to the flooring 3 via the metal holding plate 17. is,
This heats the floor. Since the heat dissipation plate portion 172 of the presser plate 17 is in close contact with the back surface of the flooring material 3,
A wide heat dissipation area can be secured between the flooring material 3 and the flooring material 3, and the flooring material 3 can be effectively heated.

In addition, the presser plate 17 also serves as a reinforcing material for the flooring 3. Furthermore,
When fixing to the back surface of the flooring material with resin, mortar, etc., good adhesion to the flooring material 3 can be obtained because the heat dissipation plate portion 172 has holes.

Generally, the heat pipe 5 operates even when placed horizontally, but in order to ensure that the condensate flows back to the heat collecting part 51, it is slightly inclined so that the position of the heat collecting part 51 is lowered. You can also do that.

Furthermore, the heat pipe 5 extends in the axial direction due to linear expansion during operation, and if the end of the heat pipe is formed by crimping the pipe, the end may bulge in the radial direction or the like. If the heat pipe expands in this way, there is a risk that the flooring or wall material that the end of the heat pipe is in contact with will be damaged. In order to prevent such problems, it is preferable to cover the ends of the heat pipes 5 with an elastic coating material such as silicone rubber. As a result, even if the end of the heat pipe 5 stretches in the axial and radial directions due to expansion, the expansion is absorbed by the elastic covering material, causing damage to the flooring and wall materials that the end of the heat pipe 5 is in contact with. can be appropriately prevented.

Note that the configuration and arrangement of the heat pipe are not limited to the above embodiments, and any type of heat pipe including conventionally known heat pipes can be used, and the arrangement thereof is also arbitrary. In addition, heat pipes are generally used with a perfectly circular cross section in order to withstand the pressure of the working fluid, but depending on the degree of pressure of the working fluid, heat pipes with a flat cross section can also be used. If such a heat pipe is used, the efficiency of heat dissipation to the flooring material can be further increased.

Further, the heat pipe may extend from inside the floor of the washing area to the wall side.

When the heating structure of the present invention is applied to, for example, a two-knit bath made of FRP, as shown in FIGS. 12(a) and (b),
The installation can be easily carried out by manufacturing a separate floor member B with the heat pipe 5 fixed to the back side of the unit body A and assembling it to the unit body A at the location. .

According to experiments conducted by the present inventors, the heating structure of the present invention is made of FRP.
Applicable to bath units manufactured by Fukushima Prefecture, and the boiler for reheating produces hot water at 50%
℃, the floor surface temperature reached approximately 27°C approximately 20 minutes after the start of reheating.

〔Effect of the invention〕

According to the present invention described above, the following effects can be obtained,
This is extremely useful as a heating structure for bathroom floors in cold regions.

(1) There is no danger like with electric heaters, and the floor of the washing area can be heated to an appropriate temperature using the heat of the hot water supplied from the reheating boiler.

In particular, the present invention does not collect heat directly from the hot water in the bathtub, but instead collects heat from the hot water that is being supplied from the reheating boiler, and by installing a duct in contact with the bathtub, the heat of the hot water in the bathtub is Since the heat is applied to the inside of the duct, there is an advantage that the temperature at which the heat is collected by the heat pipe is high. Furthermore, since it becomes difficult to collect heat when reheating by the boiler is stopped, there is an advantage that the temperature of the hot water in the bathtub decreases less than when heat is collected directly from the hot water in the bathtub.

(2) Since the heat is collected not from the hot water in the bathtub but from the hot water being supplied from the boiler, there are no restrictions on the type of bathtub that can be used, and the bathtub is made of FRP material with relatively high insulation properties. Even in such a case, the floor of the washing area can be quickly heated to an appropriate temperature. Furthermore, it can be easily applied to existing bathrooms.

(3) Manufacturing costs are low because the heat pipes only need to be embedded inside the floor, and usage costs are also low because no electricity is used.

(4) Unlike when hot water is used directly for floor heating, there is no problem of performance deterioration due to freezing damage to pipes or scale adhesion.

(5) The floor is automatically heated when taking a bath without requiring the operation of switches or valves.

(6) There is no need for a pump or heating device, and since the heat pipe is pre-installed in the bath unit, there is no need for any special work such as electrical work.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
Figure 1 is a plan view with a part of the washing area floor cut away, Figure 2 is a sectional view taken along the line It is a sectional view showing a connection structure. FIGS. 4 to 6 are cross-sectional views showing other examples of the connection structure of the heat pipe heat collecting section to the duct. FIGS. 7(a) to 7(c) are explanatory diagrams each showing an example of attaching a heat pipe to a floor material. Figures 8 and 9
The figure shows another embodiment of the structure for attaching the heat pipe to the flooring, and FIG. 8 is a perspective view showing the flooring as seen through.
FIG. 9 is a longitudinal sectional view. Figures 10 and 11 are
Similarly, another example of the structure for attaching the heat pipe to the flooring material is shown, in which FIG. 10 is a perspective view showing the flooring material seen through, and FIG. 11 is a longitudinal sectional view. Figure 12 (a), (b)
) is an explanatory diagram schematically showing the structure of a unit bath to which the heating structure of the present invention is applied. In the figure, 1 is a bathtub, 2 is a washing area, 3 is a floor, 4 is a hot water supply pipe, 5 is a heat pipe, 6 is a duct, 7 is a hot water supply port, 5
1 is a heat collecting part, and 52 is a heat radiating part. Figure 1 Figure 2 Figure Figure Figure Figure Figure

Claims (5)

[Claims] (1) In addition to embedding a heat pipe inside the floor of the bathroom washing area, a duct is installed along the bathtub wall, and a hot water supply pipe from the reheating boiler is connected to one end of the duct, and the other end of the duct is connected to the hot water supply pipe for the bathtub. A bathroom floor heating structure comprising a heat collecting part of the heat pipe connected to the duct and communicating with the duct. (2) The bathroom floor heating structure according to claim (1), wherein the heat collecting part of the heat pipe is connected to the duct so as to directly contact hot water in the duct. (3) The bathroom floor heating structure according to claim (1), wherein the heat collecting part of the heat pipe is in contact with or buried in the wall of the duct. (4) A claim in which the flooring of the washing area is made of synthetic resin boards made of synthetic resin mixed with one or more metal, ceramic, or other inorganic powders that have higher thermal conductivity than the resin. The bathroom floor heating structure according to item (1), (2) or (3). (5) Claim (1), (2) or (3) wherein the end of the heat pipe on the washing area floor side is covered with an elastic covering material.
Heating structure for the bathroom floor as described.