JPH082195Y2 - Piping structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a piping structure capable of preventing freezing in winter.

(Prior art) Recently, in a reinforced concrete building, in order to reduce the construction cost and effectively use the space, the double floor structure is stopped, and a fluid supply pipe (mainly a water supply pipe) is provided in the floor structure. It is being buried, but as a supply pipe for this purpose, a flexible pipe that is connected in common to a distributor that supplies fluid is a pipe structure in which each flexible pipe is inserted in a sheath pipe. It is publicly known (see JP-A-56-124784), and in order to prevent the water supply pipe from freezing, a heat insulating material made of a synthetic resin foam should be fitted around the water supply pipe or a heater should be wound. Is also well known.

(Problems to be solved by the invention) However, fitting a heat insulating material made of a synthetic resin foam to the outer circumference of the sheath tube causes an excessively large outer diameter, which causes a decrease in strength that reduces the thickness of the floor. However, winding the heater cannot be used for corrugated polyethylene pipe that is generally used as a sheath pipe, and even in the case of a metal pipe, it is buried in concrete, so post maintenance is not possible. There was a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a piping structure that can be adopted for a synthetic resin sheath pipe and prevents the water supply pipe from freezing.

(Means for Solving the Problems) According to the present invention, one end of a large number of flexible tubes is connected to a water supply header, and a water tap is attached to the other end of each flexible tube. The connecting portion between the flexible tube and the water supply header is housed in a header box body provided with one of the intake port and the exhaust port, and the connecting portion between the flexible tube and the water tap is the intake port and the exhaust port. The flexible tube is housed in a faucet box body provided with the other of the mouths, and each flexible tube is inserted into a sheath tube that is airtightly connected to the header box body and the faucet box body, A communication space is formed between the outer peripheral surface of the pipe and the inner peripheral surface of the sheath pipe, and in this communication space,
A gist of a piping structure is characterized in that air having a temperature capable of preventing freezing of a fluid flowing in a flexible pipe is made to flow from the intake port toward the exhaust port.

In the present invention, in order to allow air to flow in the communication space formed between the outer peripheral surface of the flexible tube and the inner peripheral surface of the sheath tube, a heating means such as a blower or a heater is incorporated from one end of the pipe. Forcibly supply or exhaust air that has been heated or maintained at a temperature that can prevent freezing with a blower, or installs a heater near one end to generate an updraft and perform natural ventilation. You can do it like this.

(Operation) In the piping structure of the present invention, one end of each of the flexible tubes is connected to the header for water supply, and the water tap is attached to the other end of each flexible tube. The connecting portion between the water supply header and the water supply header is housed in a header box body provided with one of the intake port and the exhaust port, and the connecting portion between the flexible tube and the water tap is one of the intake port and the exhaust port. The other flexible tube is housed in a water faucet box body, and each flexible tube is inserted into a sheath tube that is hermetically connected to the header box body and the faucet box body, and the flexible tube outer peripheral surface is inserted. A communication space is formed between the sheath and the inner peripheral surface of the sheath pipe, and in this communication space, air having a temperature that can prevent freezing of the fluid flowing in the flexible pipe flows from the intake port toward the exhaust port. Since it is made, the maintenance of the machine part is easy and it can be used for the sheath tube made of synthetic resin, and it flows through the communication space. Air raises the temperature of the fluid in the flexible tube to prevent freezing.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 are partially cutaway perspective views showing other embodiments of the present invention.

In FIG. 1, 2 is a large number of flexible tubes, each of which is inserted in the sheath tube 1. One end of each flexible tube is connected to the water supply header 3, and the other end is attached with a water supply plug 4 via an elbow 9. The connecting portion between the flexible tube 2 and the water supply header 3 is a header box body 5.
The header box 5 has a side wall provided with an air supply port 51, and the air supply port 51 is provided with a heater 6 and a blower 7.

On the other hand, the connecting portion between the flexible tube 2 and the water tap 4 is housed in the faucet box body 8, and the top plate portion of the faucet box body 8 is provided with an exhaust port 81.

One end of each sheath tube 1 is connected in an airtight state so as to be inserted into the header box body 5, and the other end is connected in an airtight state to the faucet box body 8.

As shown in FIG. 4, a bowl-shaped lid 11 is provided above the end of the sheath pipe 1 on the side of the water supply header 3, and a blower 7 is used to feed the air from the air supply port 51 to the box 5. The warm air supplied inside is sent into the space between the outer peripheral surface of the flexible tube 2 and the inner peripheral surface of the sheath tube 1 through the gap 12 between the lid body 11 and the sheath tube 1, and the exhaust of the box body 8 is performed. Exhausted from mouth 81.

In the example shown in FIG. 2, the exhaust unit 7'is provided in the exhaust port 52 provided in the top plate portion of the box body 5, and the heater 6 is provided in the intake port 82 provided in the top plate portion of the box body 8. Is installed, and the exhaust fan 7 '
The warm air heated by the heater 6 is sucked into the space between the outer peripheral surface of the flexible tube 2 and the inner peripheral surface of the sheath tube 1.

Further, in a residential building such as a hotel or a condominium, when the indoor air is heated above the freezing point, as shown in FIG. A heater 6 is disposed in the perforated exhaust port 52, and an upward airflow is generated by heating with the heater 6, and a space between the outer peripheral surface of the flexible tube 2 and the inner peripheral surface of the sheath tube 1 from the intake port 82. Alternatively, indoor air may be inhaled.

In this case, of course, contrary to the illustration, an exhaust port provided with a heater on the top plate portion of the box body 8 and an intake port on the top plate portion of the box body 5 may be provided.

(Effect of the device) Since the piping structure of the present invention is constructed as described above,
The water supply pipe can be prevented from freezing without causing a decrease in the strength of the floor, maintenance of the mechanical part is easy, and it can be used for a sheath pipe made of synthetic resin.

[Brief description of drawings]

1 to 3 are partially cutaway perspective views showing other embodiments of the present invention, and FIG. 4 is a partially enlarged cross-sectional view of an end portion of a sheath pipe of the embodiment shown in FIG. It is a figure. 1 ... Sheath tube, 2 ... Flexible tube.

Claims (1)

[Scope of utility model registration request] 1. One end of a large number of flexible tubes is connected to a water supply header, and a water tap is attached to the other end of each flexible tube, and each flexible tube and a water supply header are connected. Is connected to a header box provided with one of an intake port and an exhaust port, and the connection part between the flexible tube and the water tap is provided with the other of the intake port and the exhaust port. The flexible tube is housed in a water faucet box, and each flexible tube is inserted into a sheath tube that is airtightly connected to the header box body and the faucet box body. A communication space is formed between and, and in this communication space,
A piping structure characterized in that air having a temperature capable of preventing freezing of a fluid flowing through a flexible tube flows from the intake port toward the exhaust port.