JP2002047701A - Instantaneous hot-water device for header piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the diameter of piping, in which hot water can be circulated among a heat source machine and faucets, and to utilize an ordinary sleeve in a header piping system in which hot water fed from the heat source machine to each faucet can be circulated. SOLUTION: In the header piping system with paths A for water distributing water from a water supply pipe 1, a path B for hot water distributing hot water from the heat source machine 2 and the faucets 24, in which water and hot water fed from the paths A and the path B are mixed and which discharge the mixture, converging pipes 13 are installed among the path B and the faucets 24, sections among the heat source machine 2 and the converging pipes 13 are added to the path B, the paths A and the path B are connected doubly by a circulating path C with a circulating header 10 distributing hot water from the heat source machine 2 and circulating pipes 12 supplying each converging pipe 13 with hot water from the circulating header 10, hot water is reciprocated freely in the circulating path C, and hot water in the path B and the circulating path C can be circulated among the heat source machine 2 and the converging pipes 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply system for a header piping system for supplying hot water and water to each faucet attached to a kitchen, washroom, bathroom, etc. in a house.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. Hei 5-79651 discloses a conventional hot water supply system using a header piping system, in which a faucet attached to a kitchen, a wash basin, a bathtub, or the like is operated so that hot water of an appropriate temperature can be immediately obtained. FIG. 1 of the official gazette (FIG. 3 of the present application) is available. 3 will be briefly described. A plurality of hot water supply pipes 33 and a hot water supply pipe 34 are connected to a hot water supply 31 with a built-in circulation pump via a branch header 32.
The hot water supply pipe 3 and the hot water pipe 34 are collectively inserted into the sheath pipe 37, and a hot water supply joint 36 capable of turning hot water supplied to the hot water supply pipe 33 back to the hot water pipe 34 is connected to the tip thereof. Since the faucet 35 is connected to the other end of the joint 36, when the faucet 35 is closed, the water heater 31 → the hot water pipe 33 → the hot water joint 36 → the hot water pipe 34 → the hot water heater 31 The hot water can be circulated, and the hot water can be discharged without waiting immediately after the faucet 35 is opened.

[0003] In the above, the branch header and the faucet are connected by two pipes of a hot water supply pipe and a hot water return pipe for circulation of hot water, but a sufficient amount of water discharged from the faucet is ensured. It is necessary to set the dimensions of the hot water supply pipe and the hot water return pipe to the normal outer diameter, and it is difficult to insert two pipes of the normal outer diameter into a general sheath pipe. A special sheath tube with a special diameter is required, which increases the cost and takes time and labor to construct, and if the outer diameter of the tube is made smaller than usual so that it can be inserted into a general sheath tube, the faucet However, there was an inconvenience that the amount of water discharged was not sufficiently obtained, and the usability deteriorated.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a header piping system capable of circulating hot water supplied from a heat source unit to a faucet attached to a kitchen, washroom, bathroom, or the like. An object of the present invention is to reduce the diameter of a pipe that allows hot water to circulate between a heat source unit and a faucet so that a normal sheath pipe can be used.

[0005]

According to the present invention, there is provided a water supply path for distributing water supplied from a water supply pipe to a plurality of water supply pipes by a water header, and a water supply header from a heat source unit by a hot water header. A hot water path for distributing the hot water to be supplied to a plurality of hot water supply pipes, and a kitchen, a washroom, a bathroom, etc., each of which is attached to the hot water path and mixed with the water and hot water supplied from the hot water path and the hot water path. In a header piping system provided with a water faucet, a merging pipe is respectively mounted between the hot water path and a hot water inlet of each faucet, and a space between the heat source device and each merging pipe is added to the hot water path so that a heat source is provided. A circulation header having a circulation header for distributing the hot water supplied from the machine and a circulation pipe for supplying the hot water distributed from the circulation header to the respective merging pipes. Freely circulates hot water in the hot water path and circulation path between the heat source unit and the junction pipe It is obtained by the function.

According to a second aspect of the present invention, a temperature detector is mounted on each of the hot water supply pipes, and a control unit is provided for the heat source device or the hot water path when the temperature detector detects hot water lower than a preset temperature. A pump driven by a signal is mounted and hot water in the hot water path and the circulation path can be circulated by driving the pump.

In the third aspect, the hot water supply pipe and the circulation pipe are formed to have smaller diameters than the water supply pipe.

According to a fourth aspect of the present invention, the hot water supply pipe and the circulation pipe are bundled and inserted through a sheath pipe disposed under the floor, behind a wall, or the like.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. The present invention can be applied to, for example, general houses and the like. As shown in FIG. 1, a water supply pipe 1 connected to a water supply source is provided in a room of a building, and the water supply pipe 1 is used to supply supplied water. The heat source unit 2 to be heated and the water header 4 are branched and connected.

[0010] The water header 4 is provided for supplying water supplied from the water supply pipe 1 to a kitchen 21 disposed at a predetermined position in a room of a building.
Each faucet 24 attached to the washroom 22, bathroom 23, etc.
A plurality of water supply pipes 5 are provided at predetermined intervals along the longitudinal direction to form a water path A, and each water supply pipe 5 is made of a synthetic resin such as a polyethylene pipe. The bellows-shaped sheath tube 6 formed and arranged in advance under the floor, behind a wall, or the like, is inserted through and connected to the water inlets of the faucets 24.

A hot water header 8 is connected to the heat source unit 2 by a hot water supply pipe 7, and a plurality of hot water supply pipes 9 for branching hot water supplied from the heat source apparatus 2 to the respective faucets 24 are provided in a longitudinal direction. The hot water supply pipes 9 are mounted at predetermined intervals along the hot water supply pipes, and each hot water supply pipe 9 is formed of a synthetic resin such as a polyethylene pipe and has a smaller diameter than the water supply pipe 5, It is inserted through a bellows-shaped sheath tube 6 arranged beforehand under the floor and behind the wall, and is connected to each of the merging tubes 13 described later attached to the hot water inlets of the respective faucets 24.

The circulation header 10 is connected to the heat source unit 2 by a pipe line 11, and a plurality of circulation tubes 12 for branching hot water supplied from the heat source unit 2 to the respective faucets 24 are formed along the longitudinal direction. Each of the circulation pipes 12 is formed of a synthetic resin such as a polyethylene pipe similarly to the hot water supply pipe 9 and has a smaller diameter than the water supply pipe 5. In a state where the hot water supply pipe 9 and the circulation pipe 12 are bundled, the hot water supply pipe 9 and the circulation pipe 12 are inserted into the bellows-shaped sheath pipes 5 which are disposed below the floor and behind the wall in advance, and connected to the respective merging pipes 13.

Each of the faucets 24 attached to the kitchen 21, the washroom 22, the bathroom 23 and the like can discharge hot and cold water of a set temperature and flow rate by operating a handle 25, respectively.

As shown in FIG. 2, the merging pipe 13 is formed with a merging chamber 14 in which the hot water merges. In the merging chamber 14, the hot water supplied from the hot water path B and the circulation path C is supplied. The hot water is fed to the hot water inlet 26 of the water faucet 24, and when the water faucet 24 is in a water-stop state by the operation of the handle 25, the hot water is turned back from the hot water path B to the circulation path C by the merging chamber 14 to generate a heat source. The hot water supply pipe 9 is connected to a first inlet 15 communicating with the merging chamber 14, the circulation pipe 12 is connected to a second inlet 16, and an outlet 17 is provided. Is connected to a hot water inlet 26 of a faucet 24.

A temperature detector 18 for measuring the temperature of hot water passing between the hot water supply pipe 9 and the merging pipe 13 is mounted, and a control unit connected to the temperature detector 18 and a cord 19 is connected. When the temperature of the hot water measured by the temperature detector 18 is lower than a preset temperature, a detection signal is output via a code 19a to drive the pump 3 housed in the heat source unit 2. Then, when the faucet 24 is in the water stop state, the hot water can be circulated to a high temperature by circulating the heat from the heat source unit 2 → the hot water path B → the merging pipe 13 → the circulation path C → the heat source apparatus 2. The pump may be mounted on the hot water path instead of the heat source device.

When the temperature of the hot water passing through the hot water supply pipe 9 rises and reaches a preset temperature, a detection signal is output from the temperature detector 18 to the control unit 20 by the code 19, and the control unit 20 outputs a detection signal. The drive of the pump 3 is stopped by the signal from the code 20 and the code 19a, and the circulation of the hot water ends.

The header piping system of the present invention is configured as described above. When a normal faucet 24 is used in a kitchen 21, a washroom 22, a bathroom 23, etc., hot water from the heat source unit 2 is supplied to the hot water supply pipe 7,
The hot water path B composed of the hot water header 8 and the hot water supply pipe 9 and the circulation path C composed of the pipe 11, the circulation header 10 and the circulation pipe 12 are double doubly disposed before the hot water inlet 26 of each faucet 24. The hot water is supplied to the attached junction pipe 13 and mixed with the water supplied from the water path A, and the hot water is discharged from the faucet 24 to the outside.

If the faucet 24 has not been used for a while, the long hot water supply pipe 9 for connecting the hot water header 8 and the faucet 24 can be used.
When the temperature of the hot water in the inside suddenly drops, and this temperature change is detected by the temperature detector 18 and the temperature is lower than the temperature set in the control unit 20, the control unit 20 and the code 1
The pump 4 housed in the heat source device 2 is driven by a signal from 9a.

Then, the heat source unit 2 → the hot water path B → the junction pipe 13
→ Circulation path C → Circulating the hot water in the path of the heat source unit 2 can raise the temperature of the hot water passing through the junction pipe 13, and is set immediately after the handle 25 of the faucet 24 is operated in the water discharge direction. Hot and cold water can be discharged, and there is no need to wait for the temperature of the hot water to rise until the water becomes warm.

When the temperature of the hot water passing through the hot water supply pipe 9 rises above the temperature set by the control unit 20, the hot water is detected by the temperature detector 18, and the control unit 20 and the code 19a
The driving of the pump 3 is stopped by the signal from the controller and the circulation of the hot water ends.

As described above, in the header pipe of the present invention, when the temperature of the hot water in the hot water supply pipe decreases, the circulation of the hot water starts between the heat source unit and the merge pipe, and the temperature of the hot water in the hot water path and the hot water circulation path. Can be raised, and the hot and cold water supplied immediately after operating the handle of the faucet can always be the hot and cold water of the set temperature, and there is no need to wait for the water to be discharged until the temperature rises.

[0022]

According to the present invention, a water path for distributing water supplied from a water supply source by a water header to a plurality of water supply pipes, and a plurality of hot water supplied from a heat source unit by a hot water header are provided. A header provided with a hot water path for distributing to a hot water supply pipe, and a faucet installed in a kitchen, a washroom, a bathroom, etc., for mixing and discharging water and hot water supplied from the water path and the hot water path. In the piping system, a junction pipe is installed between the hot water inlet of each faucet and the hot water path, and between the heat source device and each junction pipe,
In addition to the hot water path, a circulation path including a circulation header for distributing the hot water supplied from the heat source unit and a plurality of circulation pipes for supplying the hot water distributed from the circulation header to each merging pipe is provided. And the circulation path is made reciprocable, so that the hot water in the hot water path and the circulation path can be circulated between the heat source device and the junction pipe. Therefore, since the circulation path shares the circulation path between the supply of hot water to the faucet and the heat source device in addition to the path for hot water,
Even if the diameter of the hot water supply pipe in the hot water path and the diameter of the circulation pipe in the circulation path are reduced, the amount of water discharged from the faucet does not decrease, so that the piping space can be reduced and the cost can be reduced.

Each of the hot water supply pipes is provided with a temperature detector, and the heat source unit is provided with a pump driven by a signal from a control unit when the temperature detector detects hot water lower than a preset temperature. Since the hot water in the hot water path and the circulation path can be circulated by driving the pump, the hot water can be constantly maintained at a temperature equal to or higher than the set temperature, and hot water at the set temperature can be obtained from the faucet immediately after hot water supply is started.

Furthermore, since the hot water supply pipe and the circulation pipe are formed smaller in diameter than the water supply pipe, two pipes can be bundled and inserted into one sheath pipe, and a special sheath pipe having a large outer diameter can be used. There is no need to use it, and the workability can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a header piping system according to the present invention.

FIG. 2 is an enlarged explanatory view of a merging pipe of FIG. 1;

FIG. 3 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 water supply pipe 2 heat source device 3 pump 4 water header 5 water supply pipe 6 sheath pipe 8 hot water header 9 hot water supply pipe 10 circulation header 12 circulation pipe 13 junction pipe 18 temperature detector 20 control unit 21 kitchen 22 washroom 23 bathroom 24 faucet 26 hot water inlet A water route B hot water route C circulation route

Claims (4)

[Claims] 1. A water path for distributing water supplied from a water supply pipe by a water header to a plurality of water supply pipes, and hot water supplied from a heat source device by a hot water header to a plurality of hot water supply pipes. In a header piping system provided with a hot water path to be distributed and a faucet attached to a kitchen, a washroom, a bathroom, and the like, respectively, for mixing and discharging water and hot water supplied from the water path and the hot water path, A circulation pipe is provided between the hot water path and the hot water inlet of each faucet, and a circulation path for distributing hot water supplied from the heat source apparatus by adding the hot water path between the heat source device and each of the water confluence pipes. A header and a circulation path having a circulation pipe for supplying the hot water distributed from the circulation header to each merging pipe are connected in a double manner, and the circulation path is configured to freely reciprocate the hot water, between the heat source device and the merging pipe. Characterized in that the hot water in the hot water path and the circulation path can be circulated with the header Hot water equipment for piping systems. 2. A temperature detector is attached to each of the hot water supply pipes, and is driven by a signal from a control unit when a temperature detector detects hot water lower than a preset temperature in a heat source unit or a hot water path. The hot water supply device for a header piping system according to claim 1, wherein a hot water pump and a circulation water path are circulated by driving the pump. 3. The hot water supply device for a header piping system according to claim 1, wherein the hot water supply pipe and the circulation pipe have a smaller diameter than the water supply pipe. 4. The hot water supply pipe and the circulation pipe are bundled,
The hot water supply device for a header piping system according to any one of claims 1 to 3, wherein the hot water supply device is inserted through a sheath tube provided behind a wall or the like.