JP2006077813A - Water and hot water supply piping system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping system with a water supply pipe and a hot water supply pipe free of mix-up in piping construction by forming the water supply pipe and the hot water supply pipe to be visibly identified for eliminating an error in piping construction. <P>SOLUTION: The water and hot water supply piping system comprises the resin water supply pipe 5(5A) and the resin hot water supply pipe 6(6B) to be connected to equipment and headers 1, 2. The water supply pipe 5 and the hot water supply pipe 6 are formed of resins in which different coloring agents are incorporated when the pipes 5, 6 are molded. Thus, the water supply pipe 5 and the hot water supply pipe 6 can be identified with each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a novel system for water supply / hot water supply piping.

  In recent years, resin pipes widely used in Japan as water / hot water supply pipes are polybutene pipes (PB) and cross-linked polyethylene pipes (X-PE).

  On the other hand, in addition to the above two pipe types, resin pipes using a material called PE-RT (Polyethylene of raised temperature resistance) are being adopted mainly in the floor warming market. It is also adopted as.

  However, it has been found that PE-RT and PP are inferior in heat resistance compared to PB and X-PE pipes. For example, PE-RT and PP can be used at a high temperature of about 90 ° C. that is generally used in Japan, such as being unable to clear the hot internal pressure creep test conditions defined in the PB JIS standard. Can not. Therefore, at present, it is difficult to adopt PE-RT or PP as a hot water supply pipe in Japan, but it has sufficient performance to use it as a water supply pipe.

  The present invention proposes a piping system using a resin pipe that is most suitable for water supply and hot water supply, and is a piping system that is present during pipe construction and does not mix up the water supply pipe and the hot water supply pipe.

  1st of this invention WHEREIN: In the piping system for water supply and hot water supply which connects a resin water supply pipe and a resin hot water supply pipe to an apparatus and a header, in order to identify a water supply pipe and a hot water supply pipe, when forming at least one pipe A water supply / hot water supply piping system characterized in that a water supply pipe and a hot water supply pipe are identified by molding with a resin containing an identification colorant. Of course, a colorant that can be discriminated is included in both tubes, but it is a matter of course that a colorant for identification is mixed only in one tube.

  A second aspect of the present invention is a water supply / hot water supply piping system in which a resin water supply pipe and a resin hot water supply pipe are connected to a device and a header, such as a heat insulating material or a sheath pipe that covers the water supply pipe and the hot water supply pipe. The water supply / hot water supply piping system is characterized in that at least one of the heat insulating material or the sheath pipe is colored for identification, and the water supply pipe and the hot water supply pipe are identified. Of course, it includes coloring that can be identified for both members, but it is natural that coloring only for one of the members is also included.

  The resin water supply pipe is, for example, PE-RT or PP, and the resin hot water pipe is, for example, PB or X-PE.

  According to the present invention, the water supply pipe and the hot water supply pipe are made visible, so that they are not mistaken for the piping, and there are no errors in the piping construction.

  As described above, PB and X-PE are widely used in Japan as resin pipes for current water supply and hot water supply, but these have properties suitable for use in high temperature ranges. Therefore, conversely, it can be said that the quality is excessive in the low temperature range. The present invention is intended to improve such conventional technology. Specifically, as a water supply / hot water supply pipe system, the water supply pipe is inferior in performance in a high temperature range, but has sufficient pressure resistance performance in a normal temperature range. The material (PE-RT, PP) is used, and the hot water pipe is made of a material (PB or X-PE) that has sufficient heat resistance in the high temperature range (or both normal temperature ranges). By distinguishing the material of the pipe material, it is possible to construct a piping system that is not suitable for water supply and hot water supply and that is relatively inexpensive.

  In the first aspect of the present invention, a resin water supply pipe and a resin hot water pipe are formed by resin blended with different colorants at the time of forming the pipe, the water supply pipe and the hot water supply pipe are identified, and at the time of construction The two can be easily distinguished on site. For this reason, the mistake of mistaking the water supply / hot water supply piping has been eliminated, and the subsequent deterioration of the pipe and the occurrence of water leakage accompanying this can be suppressed.

  In addition, about PE-RT mentioned above, PP, PB, and X-PE, all are white normally. Therefore, in order to distinguish between the group of (PE-RT, PP) and the group of (PB, X-PE), it is sufficient to color, for example, by filling a pigment only on one side.

  The same applies to the second invention. For example, a blue foam is applied to a polyethylene foam sheet to cover the water supply side resin tube, while a similar foam sheet colored pink is used. It is better to distinguish between the two by covering the resin pipe on the hot water supply side. The same applies to the Saya tube.

  In addition, a so-called pair tube pipe structure may be used, and the water supply side resin pipe and the hot water supply side resin pipe are integrated by an arbitrary method (for example, a heat fusion method, an adhesive, an adhesive, or the like). Alternatively, it is also a preferred form that they are integrated by winding them together with a relatively transparent heat insulating material or adhesive tape. The heat insulating material may be a molded product obtained by a so-called mold.

  Hereinafter, the first embodiment of the present invention will be described in more detail. FIG. 1 is an overall view of a water supply / hot water supply piping system. In the figure, 1 is a water supply header, and 2 is a hot water supply header. A sink 3 placed in the kitchen is provided with a mixing plug 4, and a water supply pipe 5 and a hot water supply pipe 6 are disposed between the headers 1, 2 and the mixing plug 4. In this example, the water supply pipe 5 is PE-RT, and the hot water supply pipe 6 is X-PE.

  In this example, the pipes 5 and 6 are prepared by blending a colorant in the resin at the time of molding, thereby providing a predetermined color. For example, the pipe 5 is blue (colored A) for water supply, The pipe 6 is pink (B colored) for hot water supply. As a result, the mistake of the pipes during the piping work can be completely eliminated. Needless to say, the colorant is arbitrary, and the pigment may of course use a dye.

  FIG. 2 shows an example in which the heat insulating materials 5a and 6a are wound around the resin pipes 5 and 6, and the heat insulating materials 5a and 6a are colored with a predetermined color, for example, a polyethylene foam sheet. It is wound around the resin pipes 5 and 6 and shipped from the factory. This eliminates any mistakes in the pipes 5 and 6 at the construction site.

  In FIG. 2, the heat insulating materials 5 a and 6 a are wound around the tubes 5 and 6, and the edges of the heat insulating materials 5 a and 6 a are melted 7 or processed by high frequency bonding or the like to cover the surfaces of the tubes 5 and 6. . In this way, the pipes 5 and 6 are identified in such a way that the heat insulating material can be seen at a glance because of the restriction that the work must be performed at a work site with a relatively small space and the work must be accelerated. Or it is extremely important for the completeness of construction. In this example, it is needless to say that a case where a cylindrical heat insulating material is integrally formed is also included.

  FIG. 3 shows an example of a pair tube, in which colored tubes 5 and 6 are integrated by covering them with a relatively transparent heat insulating material 8. As a result, the coloring of the internal tubes 5 and 6 can be visually confirmed, and the construction becomes easy.

  The present invention is as described above, and a resin pipe suitable for water supply and a resin pipe suitable for hot water supply are preferably selected and can be surely piped, and the range of use is extremely wide. It was. For identification of each pipe, of course, it is preferable to identify the whole pipe by coloring, but it is not particularly limited as long as it can be visually judged. For example, a resin pipe (of course, a heat insulating material and a sheath pipe are also included). It is also a good method to provide a linear line in the longitudinal direction of (included).

FIG. 1 is an overall view of a water supply / hot water supply piping system. FIG. 2 is a view showing a water supply (hot water supply pipe). FIG. 3 is a diagram showing another example of the water / hot water supply pipe.

Explanation of symbols

1. Water supply header
2. Hot water header,
3. Kitchen sink,
4. Mixing tap,
5. Water supply pipe,
6 ... hot water supply pipe,
5a ... heat insulating material for water supply pipes
6b ... heat insulation material for hot water pipes, 7 ... fusion of edges of heat insulation materials,
8 Heat insulation material in pair tubes.

Claims (5)

  In a water supply / hot water supply piping system in which a resin water supply pipe and a resin hot water supply pipe are connected to a device and a header, an identification colorant is added to at least one of the water supply pipe and hot water supply pipe when the pipe is molded. A water supply / hot water supply piping system characterized in that the water supply pipe and hot water supply pipe are identified by molding with a resin blended with water.   In a water supply / hot water supply piping system in which a resin water supply pipe and a resin hot water supply pipe are connected to a device and a header, at least one member covering the water supply pipe and the hot water supply pipe is colored for identification, and the water supply pipe and the hot water supply pipe are connected to each other. A water supply / hot water supply piping system characterized by being identified.   The water / hot water supply piping system according to claim 2, wherein the member covering the water supply pipe and the hot water supply pipe is a heat insulating material or a sheath pipe.   The water / hot water supply piping system according to any one of claims 1 to 3, wherein the resin water supply pipe is PE-RT or PP.   The water / hot water piping system according to any one of claims 1 to 3, wherein the resin hot water pipe is PB or X-PE.

Images