JPH0594652U - Piping material for water supply - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a novel piping material for water supply that prevents piping delay and does not cause great discomfort to the user. [Structure] Outgoing pipe 8 and returning pipe 9 of heat retaining water pipe to water supply pipe 7
It is one that is accompanied by. Hot water having the same temperature of 60 ° C. was used for the water supply pipe 7 and the heat retention water pipes 8 and 9. Since the amount of flowing water required for the water supply pipe and the amount of flowing water for the heat retention water pipe are different, there is no problem even if the pipe diameters are different. Also,
The water pipe 8 for heat insulation, which has a relatively high rigidity, and the water pipe materials 8, 9 for heat insulation are integrated along the pipe, and tightened with a heat-shrinkable tube or a coating tape member 10 such as an aluminum coating tape. It deforms to increase the contact area with the water supply pipe 7 and increase the heat retention efficiency. In addition, a metal pipe is used as the water supply pipe 7, and the heat retention efficiency is further improved by passing through the inside pipe 8 or the return pipe of the heat retention water pipe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water supply piping material, and more particularly to a hot water supply piping material.

[0002]

[Prior Art]

 In the so-called central hot water supply system, the hot water produced by the boiler / heat exchanger is supplied to each hot water tap by water pressure or a pump. The piping up to the hot-water tap is a single insulated pipe. In the case of a heating system, the hot water path forms a loop, so a pair of forward and return pipes is used for piping to the radiator. Various types of heat insulating pipes have been developed as heat dissipation measures for hot water pipes, but all of them were only passive heat dissipation prevention measures with heat insulating materials and structures with low thermal conductivity.

[0003]

[Problems to be solved by the device]

 However, if the hot water tap is closed for a long time, the hot water in the pipe will gradually cool to near atmospheric temperature. After that, when the hot water tap is opened, the predetermined water temperature will not be reached at least until the water in the pipe is drained. The delay in the temperature reached by this piping (hereinafter referred to as piping delay) becomes longer as the piping path becomes longer. In the case of shower taps in particular, this delay in piping causes great discomfort to the user.

Conventional measures have focused on covering the pipe with a heat insulating material such as a foamed plastic layer or a glass wool layer to prevent heat radiation from the pipe. As another method, measures such as reducing the pipe diameter and increasing the flow velocity to reduce the delay time are being studied. In either method, if the downtime is long, some delay in piping cannot be avoided.

On the other hand, in the conventional hot water supply and heating system, most of the heating heat sources and pumps are not used during the period when heating is not used. This period is generally several months to six months or longer, which is a long period. Not only was the investment efficiency poor, but it could also cause malfunctions such as pump locks.

An object of the present invention is to provide a novel piping material for water supply, which prevents the above-mentioned piping delay and does not give a great discomfort to the user.

[0007]

[Means and Actions for Solving the Problems]

 The gist of the present invention is to add a hot water pipe for heat retention in parallel with the hot water supply pipe, and to reduce cooling due to heat radiation from the hot water supply pipe by the hot water pipe for heat retention even when the water flow in the hot water supply pipe stops. is there. Furthermore, as a means of supplying hot water into the hot water pipe for heat retention, a so-called pipe delay is caused by a hot water source and pump for heating of the hot water supply / heating system, or a system equipped with a similar dedicated hot water source and pump and heat insulating pipe. It can be reduced to practically negligible.

That is, the above-mentioned object of the present invention is characterized in that the heat-retaining water pipe is added to the water-supply pipe to form an integral body. Water absorption piping material consisting of three pipes together with a book. The water supply piping material described in the above, characterized in that the water supply piping is included in one of the heat retention water piping. To be achieved.

As the water supply piping material of the present invention, a metal tube such as copper having a high thermal conductivity is preferable from the viewpoint of heat exchange performance between the warm water for heat retention and the water supply piping. However, if the flexibility during construction is emphasized and some or all of the material of the pipe is a plastic pipe, this object can be sufficiently achieved if the heat radiation outside the pipe can be sufficiently reduced.

In the present invention, the fact that the heat-retaining water pipes are added to the water-supplying pipes so as to be integrated means that the pipes are brought into contact with each other as much as possible so that the heat radiation from the water-supplying pipes is supplemented by the heat from the heat-retaining water pipes. It is said that they are integrated with a band or tape for that purpose. It is preferable to install two reciprocating heat insulation water pipes on the right and left sides of the water supply pipe. In this case, it is desirable that the water supply pipe is a copper pipe and the left and right heat insulation water pipes are plastic pipes, and as many surfaces as possible are brought into contact with each other to be integrated.

Further, in the present invention, the fact that the water supply pipe is included in one of the heat retention water pipes means that the heat retention water pipe is a double pipe having the water supply pipe inserted therein. In that case, another heat retaining water pipe may be attached to the double pipe or may be attached to another water supply pipe.

The water supply piping material of the present invention is used by keeping the enclosure warm together with the attached piping.

[0013]

Embodiment

 An embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows an embodiment of a hot water pipe path using the piping material of the present invention. The hot water produced by the hot water supply heat source 2 can be used by opening the hot water tap 6 through the hot water supply pipe 7. On the other hand, the hot water produced by the heat retaining heat source 1 is circulated in the system by the circulation pump 3. The warm water for heat retention may be made for its own purpose, but may be made in common with the hot water for heating. Explaining according to the case of being commonly made, by opening the heating valve 4 which is usually linked to the switch of the radiator 5 for heating, hot water for heating is supplied to the radiator 5 to perform the heating function. In parallel with this heating circuit, a hot water piping for heat retention is provided along with the hot water (water) piping 7 up to the hot water tap 6, and a piping circuit in which the forward pipe 8 and the return pipe 9 are integrated is provided. The two pipes, the forward pipe and the return pipe, are connected near the hot water tap 6 to form a closed loop. By circulating a small amount of hot water continuously or intermittently in this warm water warming water pipe loop, heat radiation of the hot water supply (water) pipe 7 can be prevented, and so-called pipe delay can be minimized.

Representative examples of the piping material structure of the present invention are shown in FIGS. 1 (A), 1 (B) and 1 (C). In FIG. 1 (A), the water supply pipe 7 is fitted with the outgoing pipe 8 and the return pipe 9 of the heat insulating water pipe, and the heat insulating material 11 covers the enclosure with the covering tape 10 as one body. Hot water of the same temperature (60 ° C.) was used for the water supply pipe 7 and the heat retention water pipes 8 and 9. Since the water flow required for the water supply pipe and the water flow for the heat retention water pipe are different, there is no problem even if the pipe diameters are different, and it is within the scope of the present invention. In the diagram (B), a soft water pipe 8 for heat insulation is provided along the water supply pipe 7 having a relatively high rigidity, and the water heat pipe 8 and the soft heat insulating water pipe pipe 9 are integrated together. This is an example in which the heat insulation water pipes 8 and 9 are deformed by tightening and integrating to increase the contact area with the water supply pipe 7 to increase the heat insulation efficiency. In the figure (C), a metal pipe is used as the water supply pipe 7, and the heat insulation efficiency is further improved by passing the metal pipe through the outward pipe 8 of the heat retention water pipe (or through the return pipe 9). Is.

Regarding the heat retention efficiency, the double pipe structure of FIG. (C) is the maximum, but the treatment of the heat retention pipe in the terminal tends to be complicated, and in terms of workability, it is a diagram (A) or (B). It can be said that the structure shown in the figure is advantageous.

[0016]

【Example】

 The effects of the water supply piping material of the present invention will be described with reference to examples. In the present invention, 60 ° C. having the same temperature is used as hot water for hot water supply / heat retention as shown in FIG. 1 (A), and the average flow rate of hot water in the heat retention water pipes 8 and 9 is 0.3 (liter / min) or more. In this case, hot water of 55 ° C or higher can be obtained within 0.5 seconds regardless of how long the hot-water tap 6 is once opened for 5 minutes, and so-called piping delay can be ignored. I was able to make it small. Also, in order to save energy, if a timer is installed in the warm water circuit and the warm water circuit is stopped at night, the above effect can be obtained by starting the warm system 45 minutes before the start of use. Was confirmed.

[0017]

[Effect of the device]

 By using the water supply piping material of the present invention, it is possible to prevent the temperature of the hot water for hot water supply from being lowered and to cause a great discomfort to the user as in the above embodiment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a water supply piping material of the present invention, one embodiment (A) and another embodiment (B), (C).

FIG. 2 is a piping system diagram of an embodiment using the water supply piping material of the present invention for hot water supply piping.

[Explanation of symbols]

 1 Water heat source for heat retention or heating 2 Water heat source for hot water supply 3 Circulation pump 4 Circuit valve for heating 5 Radiator 6 Hot water tap 7 Water pipe for hot water supply 8 Hot water return pipe for heat insulation 9 Hot water return pipe for heat insulation 10 Coated tape 11 Insulation material

Claims (3)

[Scope of utility model registration request] 1. A water supply pipe material comprising two pipes, wherein the water supply pipe is integrated with a heat retention water pipe. 2. A pipe material for water supply comprising three pipes, wherein two pipes for warming water are reciprocated together to form a pipe for water supply. 3. The pipe material for water supply according to claim 1 or 2, wherein the water supply pipe is provided in one of the heat retention water pipes.