JP3945726B2 - How to update dwelling piping - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called dwelling unit piping renewal method that is performed when an existing pipe in a dwelling unit or the like is replaced with a new pipe.
[0002]
[Prior art]
The water supply to the dwelling units in apartment buildings, etc. is branched from the common water supply standpipe to the pipes for each dwelling unit, through the back of the inner wall of each dwelling unit, under the floor or behind the ceiling, etc., through the piping of the kitchen, bathroom, toilet, toilet, etc. Has been done. The water supply pipes installed in these dwelling units have conventionally used vinyl chloride lining steel pipes, and copper pipes or the like have been used for hot water supply pipes. By the way, these pipes deteriorate due to secular change and the risk of water leakage increases, and in the case of steel pipes, they are not suitable for use due to the occurrence of red water due to rust. Such pipes are updated as appropriate.
[0003]
For the renewal of piping, different methods are adopted for each type of piping. When the pipe is piped with a vinyl chloride lining steel pipe or copper pipe, the pipe is renewed by stripping the inner wall, floor or ceiling of the piped dwelling unit. When renewing, remove the existing pipe from the support fixture fixed to the wall surface, remove it from the work hole on the peeled wall surface, and then install a new pipe or pipe it in an exposed state in the dwelling unit. Is attached.
[0004]
[Problems to be solved by the invention]
As described above, in the case where a vinyl chloride lining steel pipe or a copper pipe is piped in the dwelling unit, there are several problems in the renewal of these pipes as follows. First, since it is necessary to replace the pipe by peeling the wall, floor, or ceiling corresponding to the part where the pipe is piped, a great amount of work cost and work time are required. The 2nd requires many work processes for attaching new piping, after removing existing piping from a support tool and removing this. Thirdly, when a copper pipe is used, there is a problem accompanied by a risk of using a firearm such as a burner for connection by silver solder.
[0005]
Therefore, an object of the present invention is to safely update the piping in the dwelling unit and shorten the work period and reduce the cost of updating the piping.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention leaves the existing pipe to be updated as it is, adopts a flexible pipe as a new pipe, inserts the flexible pipe from the work inspection hole, and installs it in the existing pipe. A new pipe is fixed to the existing pipe using a binding means. Adoption of this method eliminates the need to attach and detach the old and new piping to the support, and eliminates the need to remove existing piping. The use of flexible pipes allows the work to be inserted into these inspection holes and to fix the new pipe to the old pipe if work inspection holes, etc. are installed everywhere, and the stripping work on the wall surface etc. is minimized. It is to suppress.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an existing pipe (hereinafter referred to as “existing pipe”) 3 is supported on a wall surface 1 of an apartment house such as an apartment via a support 2. The existing pipe 3 is a metal pipe such as a vinyl-lined steel pipe, and is provided so that it can be inspected for water leakage or the like due to secular change from a work inspection hole not shown in the figure.
[0008]
The existing pipe 3 is left as it is without being removed, and a new flexible pipe (hereinafter referred to as “flexible pipe”) 4 is provided along the pipe 3 and integrated with the binding means 5 at an appropriate place. It is fixed to become.
[0009]
As the flexible tube 4, a polybutene tube (hereinafter referred to as “PB tube”) excellent in flexibility and durability is adopted. Since the PB pipe is excellent in flexibility, one end can be inserted from the inspection hole and sent out to the other inspection hole along the existing pipe. For this reason, there is almost no need to peel off the inner wall or the like, and the flexible tube 4 need only be fixed to the existing tube 3 by the bundling means 5 at a place where an operation such as an inspection hole is possible.
[0010]
The binding means 5 may employ a tightening band that can be fastened with one touch. Here, a binding band configured to be fixed to the hook 5a fixed to one end of the band by simply pulling it through the other end of the band is employed.
[0011]
In the present invention, there is no problem as long as the inspection holes are provided at an appropriate interval. However, if the interval between the inspection holes is too long, the internal inspection holes should be peeled off as necessary to provide the inspection holes. In some cases, it may be necessary. However, since the installation of such an inspection hole is minimal, it does not cause a situation in which the inner wall is peeled off along the existing pipe as has been conventionally done. Moreover, since it is only necessary to fix the PB pipe 4 to the existing pipe 3, it is not necessary to remove the existing pipe as in the case of renewing the pipe in the prior art, and further, it is not necessary to attach or detach the pipe. Work becomes extremely easy.
[0012]
Next, an application example of the present invention will be described with reference to FIG. FIG. 2 shows watering of an apartment house such as a condominium. An external water supply pipe 11 branched from a water supply standpipe passes through an outer wall 12 and is drawn into a dwelling unit. Meters are installed in the meter box and the pipe space 13 provided outside the outer wall 12. The external water supply pipe 11 branches into a main pipe 16a and a branch pipe 11a, which will be described later, in the residence, and this branch pipe is connected to the water heater 15.
[0013]
The external water supply pipe 11 is connected to the main pipe 16 in the back space 14a of the storage compartment 14 in the dwelling unit. The main pipe 16 includes a first main pipe 16 a extending along the wall surface of the toilet 17 from the middle of the back space 14, and a second main pipe extending from the bathroom 18 along the wall surface of the washroom / dressing room 19. 16b and a third main pipe 16c which is bent at a right angle and further extends along a wall surface which partitions the washroom / dressing room 19 and the kitchen 20.
[0014]
A branch pipe 21 a branched from the first main pipe 16 a is connected to the tank 17 a provided in the toilet 17. Similarly, a branch pipe 21 b branched from the second main pipe 16 b is connected to the faucet of the bathtub 18 a of the bathroom 18. Branch pipes 21c, 21d, and 21e branched from the third main pipe 16c are connected to the wash basin 19a and the washing machine 19b installed in the washroom 19, and the sink 20a of the kitchen 20, respectively. It is assumed that a work inspection hole is provided at a position indicated by a filled triangle.
[0015]
Next, how to update these main pipes and branch pipes will be described.
First, as preparation for renewal of the water supply pipe, the mortar filled around the external water supply pipe 11 penetrating the outer wall is removed, and the inspection holes for each work in the toilet 17, the bathroom 18, and the washroom 19 are removed. Keep it open. Further, the upper mirror of the sink 19a and the sink 20a are moved.
[0016]
Of the external water supply pipe 11 and the main pipe 16, the update of the first main pipe 16 a in the section to the wall surface of the toilet 17 is performed by entering the back space 14 a on the back side of the wall from the inspection hole of the toilet 17. In this case, since the work space is relatively large, the pipe may be updated in the same manner as in the prior art. However, in this case as well, the present invention can be applied and easily renewed by fixing the existing pipe 2 with the bundling means 5 using a PB pipe that is easy to work and has excellent durability.
[0017]
The main pipe 16b beyond the toilet 17 is inserted through the inspection inspection hole of the toilet 17 and extended along the existing pipe 3, and the PB pipe 4 is fixed to the existing pipe by the binding means 5 for each inspection port. (See FIG. 1). It is desirable to fix the PB pipe 4 to the existing pipe 3 by binding at an interval of about 90 cm. Therefore, in the case where it is unavoidable, for example, when the interval between inspection holes is long as in the section between the bathroom 18 and the kitchen 20, It is preferable to provide a work inspection hole in advance on the inner wall. The piping 16c on the back side of the inner wall that partitions the washroom 19 and the kitchen 20 is updated in the same manner.
[0018]
Next, the branch pipe 21 (21a, 21b, 21c, 21d) is connected to the fixed main pipe 16 at each location, and each of these branch pipes is connected to each device. The branch pipe 21 is also a PB pipe, and the one to which the present invention is applicable is updated accordingly. At this time, the existing branch pipe will be removed and replaced with a new branch pipe that will interfere with the renewal work. For the parts that do not hinder the renewal work, leave the existing branch pipe as it is, remove the connection end with the equipment and connect the end of the new branch pipe. In this case, it is desirable to fix the old and new branch pipes using binding means (see FIG. 1).
[0019]
When all main pipes and branch pipes are connected, perform a water pressure test on the pipes, and pass water after confirming safety. Moreover, the place which peeled the inner wall repairs this, and the update work of a water supply pipe is complete | finished. Although the present invention demonstrates its true value where holes for inserting flexible tubes such as work inspection holes are provided at appropriate intervals, the inner wall or the like can be removed even under conditions where the inspection holes are not nearby. Since the size of the area to be peeled only needs to be a size corresponding to the inspection port, the operation is simpler than before, and the excellent characteristics of the present invention can be utilized, so that it can be widely applied.
[0020]
In addition, although this invention is demonstrated as what updates the water pipe of an apartment house, it is applicable not only to an apartment house but to a normal detached house, a multipurpose building, etc. Further, although the PB pipe is adopted as the renewal pipe (flexible pipe), the flexible pipe is not limited to this, and another flexible resin pipe or the like may be adopted.
[0021]
In addition, although this invention is demonstrated as what is mainly applied to piping for water supply, it is applicable also to piping for other hot water supply, gas, etc. Also, in the above description, the so-called branch pipe type of piping that is connected from the main pipe to each device by a branch pipe is exemplified, but the present invention is a so-called header that individually pipes from the external water supply pipe to the water supply ports of each part. It can also be applied to the renewal of piping by the method.
[0022]
【The invention's effect】
The present invention uses a flexible pipe excellent in flexibility as a pipe for renewal, and enables the pipe by inserting it from an inspection hole for work. This makes it possible to renew piping very easily. In addition, since the renewal pipe is renewed by fixing it to the existing pipe through the bundling means, work such as removal of the existing pipe from the support and installation of the renewal pipe becomes unnecessary, and the existing pipe is removed. Since no work is required, the pipe renewal work is extremely simple.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which a renewal pipe is fixed to an existing pipe.
FIG. 2 is a plan view showing a water circumference to which piping in a dwelling unit is updated by applying the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall surface 2 Support tool 3 Existing piping (existing pipe)
4 New piping (flexible tube)
5 Binding means

Claims (1)

Install a new flexible pipe adjacent to the existing pipe to be renewed supported by a support fixed to the back of the inner wall of the dwelling unit, under the floor or behind the ceiling , and connect the existing pipe and the new pipe. A method for renewing a dwelling unit piping, which is fixed integrally using a bundling means and switched from the existing piping to the water supply by the new piping.

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