JP3438530B2 - Piping cover structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cover structure capable of preventing freezing even in winter, for example, by keeping hot water supply pipes and water supply pipes provided inside and outside a building, particularly inside an outer wall of the building.

[0002]

2. Description of the Related Art As a conventional pipe cover structure for keeping the temperature of a pipe as shown in FIG. This pipe cover structure is provided around the pipe 9 for water supply or hot water supply provided in a wall of a bathroom, a washbasin unit, a toilet unit, or the like.
The urethane foam is wound as the heat insulating material 10. A heat insulating material 6 such as glass wool is also filled around the pipe 9 in the wall.

The pipe 9 thus provided may be frozen in a cold region where the outside air temperature decreases in the winter, so the heat insulating material 6 as described above is wrapped around the pipe 9 and further inside the wall. They are provided close together.

[0004]

However, even the above-mentioned conventional example may freeze depending on the conditions. For example, a 15.8φ copper pipe is used as the pipe 9, and the thickness is 3
When 0 mm urethane foam is wrapped and the glass wool is pressed against the pipe 9 to be about 24 mm, the room temperature is 5 ° C., and the outside air temperature is −20 ° C.
Under such conditions, the water temperature in the pipe 9 becomes -5 ° C, and it is impossible to prevent freezing.

The present invention has been made to solve the above problems, and an object thereof is to provide a pipe cover structure which is unlikely to freeze even when the outside temperature is low.

[0006]

According to a first aspect of the present invention for solving the above-mentioned problems, a hot water supply pipe 1 and a water supply pipe 2 are arranged substantially in parallel, and the hot water supply pipe 1 and the water supply pipe 2 are covered. It is characterized in that it is covered with a material 3 and is formed by communicating the insides of the hot water supply pipe 1 side and the water supply pipe 2 side of the cover material 3 with each other and filling the inside of the cover material 3 with a heat storage material 4. I am configuring.

In such a pipe cover structure, the heat of the hot water flowing through the hot water supply pipe 1 is stored in the heat storage material 4, and the heat stored in the heat storage material 4 serves to keep the hot water supply pipe 1 and the water supply pipe 2 warm. Have contributed.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the cover material 3 is covered with a heat insulating material 5.

In such a pipe cover structure, the heat insulating material 5
As a result, the heat stored in the heat storage material 4 is rarely released to the outside, and the stored heat is effectively used.

The invention according to claim 3 is the invention according to claim 1 or 2.
In any one of the inventions described above, the heat storage material 4 has a phase transition temperature of −2 to 10 ° C.

In such a pipe cover structure, the heat stored in the heat storage material 4 is radiated at the phase transition temperature. That is, −
The heat storage material 4 having a temperature of 2 ° C. or higher can keep the water temperature lower than −2 ° C. Since normal still water does not freeze unless it becomes -4 ° C or lower due to supercooling, freezing of the hot water supply pipe 1 and the water supply pipe 2 is prevented by the heat storage material 4 of -2 ° C or higher. Further, if the animal heat storage material 4 has a temperature of 10 ° C. or less, the heat from the hot water supply pipe 1 can be efficiently stored.

A specific example of the heat storage material 4 as described above is as follows.
For example, a composition having a phase transition temperature of 0 ° C. and a supercooling inhibitor added to water, and a compound having a phase transition temperature of 5 to 9 ° C. include sodium sulfate decahydrate mixture.

The invention according to claim 4 is characterized in that the hot water supply pipe 1 and the water supply pipe 2 are provided at positions close to the indoor side in the wall.

In such a pipe cover structure, the hot water supply pipe 1 and the water supply pipe 2 are less likely to be affected by the low temperature outside the room.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing a pipe cover structure of this embodiment, showing a state in which a hot water supply pipe 1 and a water supply pipe 2 are housed in a wall. Further, FIG. 2 is a perspective view of a main part of the same pipe cover structure, in which hot water supply pipe 1, water supply pipe 2, heat storage material 4 and cover material 3 are extracted and shown.

As shown in the above figures, in this pipe cover structure, hot water supply pipes 1 and water supply pipes 2 are arranged substantially parallel to each other, and these hot water supply pipes 1 and 2 are covered with a cover material 3. The cover material 3 is formed by communicating the hot water supply pipe 1 side and the water supply pipe 2 side with each other, and the cover material 3 is filled with the heat storage material 4. That is, the hot water supply pipe 1 and the water supply pipe 2 are covered with the heat storage material 4, and the heat storage material 4 is wrapped in the cover material 3.

The place where such a pipe cover structure is installed is not particularly limited, but it is particularly preferably applied to the hot water supply pipe 1 and the water supply pipe 2 which are housed in the wall of a bathroom, a washbasin unit or a toilet unit. Therefore, even if these pipes 1 and 2 are cooled, there is an advantage that they can be kept warm so as not to freeze.

As shown in FIG. 1, in such a pipe cover structure, the hot water supply pipe 1 and the water supply pipe 2 are provided close to the inside of the wall, with the cover material 3 covered with the heat insulating material 5. ing. In the wall provided with the hot water supply pipe 1 and the water supply pipe 2, a space between the outer wall material 8 and the interior material 7 is filled with a heat insulating material 6 such as glass wool. Then, the hot water supply pipe 1 and the water supply pipe 2 in which the cover material 3 is covered with the heat insulating material 5 are housed by removing the portion of the heat insulating material 6 on the interior material 7 side.

In the pipe cover structure as described above, the heat of the hot water flowing in the hot water supply pipe 1 is stored in the heat storage material 4, and the heat stored in the heat storage material 4 keeps the hot water supply pipe 1 and the water supply pipe 2 warm. Contribute to. Therefore, even if the outdoor temperature is low and the wall is cooled, these hot water supply pipes 1 and 2 are unlikely to freeze. In particular,
The temperature of the tap water may be about 3 ° C in winter, etc., and it may not be possible to prevent freezing just by covering and protecting the heat insulating material 5. Since it uses the livestock heat, it has a high anti-freezing effect.

The heat insulating material 5 on the outside of the cover material 3 does not allow the heat stored in the heat storage material 4 to escape to the outside, so that the stored heat can be effectively used, and the hot water supply pipe 1 and the water supply can be used. Since the pipe 2 is brought closer to the indoor side, it is less likely to be affected by the low temperature of the outside air, and the freeze prevention is more effectively performed.

The above-mentioned heat storage material 4 has a phase transition temperature of −
Those having a temperature of 2 to 10 ° C. are preferably used. That is, since the heat stored in the animal heat storage material 4 is radiated at the phase transition temperature, if the animal heat storage material 4 has a phase transition temperature of −2 ° C. or higher, the water temperature is −2.
It can be kept warm so that it does not drop below ℃. Since normal still water does not freeze unless it becomes -4 ° C or lower due to supercooling, freezing of the hot water supply pipe 1 and the water supply pipe 2 is reliably prevented. Further, if the animal heat storage material 4 has a temperature of 10 ° C. or less, the heat from the hot water supply pipe 1 can be efficiently stored and the heat retaining effect is high. As a specific example of the heat storage material 4 as described above, for example, as a material having a phase transition temperature of 0 ° C., a composition obtained by adding a supercooling inhibitor to water can be mentioned, and the phase transition temperature is 5 to 5. Examples of 9 ° C. include sodium sulfate decahydrate mixture.

Further, the cover material 3 is used as a container for holding the heat storage material 4 which becomes liquid when heated.
As such a cover material 3, various forms such as a resin container made of polyethylene or polypropylene or a bag made of a resin film can be used.

Various materials such as polyethylene foam, urethane foam, glass wool, and rock wool can be used as the heat insulating material 5, and the thermal conductivity is 0.1 W / m.
A material having a heat insulation performance of K or less can be preferably used with a thickness of about 2 to 30 mm.

Further, the width of the portion connecting the hot water supply pipe 1 and the water supply pipe 2 is preferably about 5 to 100 mm in order to enable sufficient heat storage for the water supply side by the heat for hot water supply.
More preferably, it is about 5 to 50 mm.

The heat storage material 4 preferably has a thickness of about 2 to 30 mm, more preferably about 5 to 30 mm. That is, the thickness is preferably 30 mm or less in order to be provided inside the wall, and is preferably 5 mm or more in order to secure the amount of animal heat required for sufficient heat retention.

[0027]

According to the first aspect of the present invention, the heat of the hot water flowing in the hot water supply pipe is stored in the heat storage material, and the heat stored in this heat storage material keeps the hot water supply pipe and the water supply pipe warm. The hot water supply pipes and the water supply pipes of are difficult to freeze.

According to the second aspect of the present invention, the heat insulating material allows the stored heat to be effectively utilized without releasing the heat stored in the heat storage material to the outside. Therefore, the hot water supply pipe and the water supply pipe are less likely to freeze.

In the invention of claim 3, the phase transition temperature is −
Since it is kept warm by the heat storage material at 2 ° C or higher, the water temperature of the still water in the pipe is lower than -4 ° C, and it does not freeze beyond the supercooled state. Further, since the heat storage material having a phase transition temperature of 10 ° C. or lower is used, the heat from the hot water supply pipe can be efficiently stored and sufficient heat retention can be performed. Therefore, the hot water supply pipe and the water supply pipe are less likely to freeze.

According to the fourth aspect of the present invention, since the hot water supply pipe and the water supply pipe are located at positions that are not easily affected by the low temperature of the outside air,
It is harder to freeze.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pipe cover structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the above pipe cover structure.

FIG. 3 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

1 Hot water supply piping 2 Water supply piping 3 cover material 4 livestock heat material 5 insulation 6 insulation 7 Interior materials 8 outer wall materials 9 piping 10 insulation

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E03B 7/12 E03C 1/00-1/10 F16L 59/14

Claims (4)

(57) [Claims] 1. A hot water supply pipe and a water supply pipe are arranged substantially parallel to each other, the hot water supply pipe and the water supply pipe are covered with a cover material, and the inside of the hot water supply pipe side and the water supply pipe side of the cover material are communicated with each other. A pipe cover structure characterized by being formed by filling the inside of this cover material with a heat storage material. 2. The pipe cover structure according to claim 1, wherein the cover material is covered with a heat insulating material. 3. The pipe cover structure according to claim 1, wherein the heat storage material has a phase transition temperature of −2 to 10 ° C. 4. The pipe cover structure according to any one of claims 1 to 3, wherein the hot water supply pipe and the water supply pipe are provided at positions close to the indoor side in the wall.