JPH0573413U - Individual hot water supply system - Google Patents

Abstract

(57) [Summary] [Purpose] No need for draining the expanded water to the washbasin drain pipe,
Improve workability of installation and prevent backflow of water and odor. [Composition] A water pipe 53 and a hot water supply pipe 57 are connected to a water tap 55, and a pair of opening / closing means 59 and 63 for opening and closing the water pipe 53 and the hot water supply pipe 57 are provided in the water tap 55, and a hot water storage type water heater 41 is provided.
In the individual hot water supply system in which is connected to the hot water supply pipe 57,
An automatic opening / closing valve 45 is provided in the water supply pipe 7 of the hot water storage type water heater 41,
The faucet 5 is provided with a signal output means 47 for operating the automatic opening / closing valve 45.
Provided in the vicinity of 5. A gap forming means is formed on the contact surface of the top that opens and closes the opening by opening and closing the opening of the hot water supply pipe 57 in the faucet 55 by being driven by the opening and closing means 59 on the hot water side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an individual hot water supply system which is installed according to local demands.

[0002]

[Prior Art]

 When hot water needs to be locally supplied, conventionally, a small hot water storage type water heater was installed under the sink or sink. 4 is an explanatory view showing a piping system of a conventional individual hot water supply system, FIG. 5 is an explanatory view showing a faucet mechanism used in the conventional individual hot water supply system, and FIG. 6 is an enlarged view showing a main part of the faucet mechanism. It is a figure. As shown in FIG. 4, a hot water storage type water heater 3 is installed under the washbasin 1, and a water supply pipe 7 having a water shutoff valve 5 is connected to the hot water storage type water heater 3. A pressure reducing valve 9 is provided in the water supply pipe 7, and the pressure reducing valve 9 prevents a high water pressure from being applied to the small hot water storage type water heater 3. The hot water storage water heater 3 is provided with a hot water supply pipe 13 having a water shutoff valve 11, and the hot water supply pipe 13 is connected to a hot water side of a faucet 15 provided on the washbasin 1. Further, a water pipe 17 branched from the water supply pipe 7 is connected to the water side of the faucet 15.

As shown in FIG. 5, the faucet 15 is provided with a hot water handle 19 and a water handle 21, which are opening / closing means, and the hot water handle 19 and the water handle 21 are rotated. The top piece 23 shown in FIG. 6 is brought into contact with and separated from the opening 13a of the hot water supply pipe 13 and the opening 17a of the water pipe 17. Therefore, when the hot water handle 19 and the water handle 21 are rotated by a desired amount and the openings 13a and 17a are opened by a predetermined amount, hot water and water are mixed in the faucet 15 at a required ratio, and the spout 25 It is designed to discharge water at a desired temperature.

By the way, the hot water storage type water heater 3 is provided with a relief valve 27, and the relief valve 27 is pipe-connected to a special joint 31 attached to a drain pipe 29 of the washbasin 1. At the time of boiling water, the water in the hot water storage type water heater 3 is slightly heated and the volume thereof is expanded. At this time, when the internal pressure of the hot water storage-type water heater 3 rises due to the volume expansion of water, the internal pressure exceeds a certain level, and the relief valve 27 is opened so that the expanded water is drained to the drain pipe 29. There is. As described above, by appropriately discharging the expanded water, the pressure increase in the hot water storage type water heater 3 is prevented, and the hot water storage type water heater 3 is prevented from being broken due to the increase in the internal pressure. -ing

[0005]

[Problems to be solved by the device]

 In the conventional individual hot water supply system, a relief valve 27 is provided in the hot water storage type water heater 3 in order to prevent the pressure rise in the hot water storage type water heater 3 due to the volume expansion of water, and the piping from the relief valve 27 is provided. A special joint 31 for connecting the above was attached to the drain pipe 29 of the washbasin 1. However, the work of attaching the special joint 31 to the drain pipe 29 and the work of piping from the relief valve 27 to the special joint 31 must be performed in a narrow space below the washbasin 1, and the workability is extremely poor. In the piping work from the relief valve 27 to the special joint 31, it may be difficult to take sufficient measures against backflow due to the small space, and the odor control (trap) 33 of the drain pipe 29 may not function sufficiently. There is a risk that the odor from the drain pipe 29 may flow to the faucet 15 or the drainage of the drain pipe 29 may flow backward.

The present invention has been made in view of the above circumstances, and provides an individual hot water supply system in which expanded water does not need to be discharged to a drain pipe of a wash basin, thereby improving workability of installing a hot water storage type water heater. , And to prevent backflow of water and odor.

[0007]

[Means for Solving the Problems]

 The individual hot water supply system according to the present invention for achieving the above object is provided with a pair of opening / closing means for opening and closing the water pipe and the hot water supply pipe, respectively, in a water pipe and a faucet to which the hot water supply pipe is connected. In an individual hot water supply system in which a hot water storage type water heater that supplies water is installed in the hot water supply pipe, an automatic opening / closing valve is provided in the water supply pipe of the hot water storage type water heater, and a signal output means for activating this automatic opening / closing valve is provided in the faucet. Gap forming means is provided on the contact surface of the top that opens and closes the opening of the hot water supply pipe inside the faucet by opening and closing by opening and closing the opening of the hot water supply pipe by following the opening and closing means on the hot water side. It is characterized by

[0008]

[Action]

 When water is used, the signal output means opens the automatic open / close valve to allow water to be supplied from the water supply pipe to the hot water storage water heater and the water pipe. Water of a desired temperature is discharged from the water outlet. When the use of water is completed and the automatic opening / closing valve is closed, the water supply from the water supply pipe is cut off. In this state, the expanded water warmed in the hot water storage type water heater is drained into the faucet through the gap between the top formed by the gap forming means and the opening, and the water in the hot water storage type water heater is The internal pressure is kept constant.

[0009]

【Example】

 Hereinafter, preferred embodiments of an individual hot water supply system according to the present invention will be described in detail with reference to the drawings. 1 is an explanatory view showing a piping system of an individual hot water supply system according to the present invention, and FIG. 2 is an enlarged view showing a faucet mechanism used in the individual hot water supply system according to the present invention. A hot water storage type water heater 41 is installed under the washbasin 1, and a water supply pipe 7 having a water shutoff valve 43 is connected to the hot water storage type water heater 41. An automatic opening / closing valve (solenoid valve) 45 is provided in the pipe between the hot water storage type water heater 41 and the water shutoff valve 43, and the automatic opening / closing valve 45 is a signal output means provided on the washbasin 1 and is a manual output means. Alternatively, opening / closing control is performed by a non-contact type switch (infrared sensor switch or the like) 47. A water shutoff valve 49 is provided in the pipe between the automatic opening / closing valve 45 and the hot water storage type water heater 41. One end of a water pipe 53 provided with a water stop valve 51 is connected to the pipe between the water stop valve 49 and the automatic opening / closing valve 45, and the other end of the water pipe 53 is a faucet provided on the sink 1. It is connected to the water side of 55.

A hot water supply pipe 57 is provided in the hot water storage type water heater 41, and the hot water supply pipe 57 is connected to the hot water side of the faucet 55. The hot water supply pipe 57 connected to the hot water side of the water faucet 55 opens as an opening 57a (see FIG. 2) in the water faucet 55, and the opening 57a allows the hot water handle (opening / closing means) 59 to rotate. It is adapted to be opened and closed by a comma 61 which is driven and comes into contact with and separates from the opening 57a. A small projection 61a, which is a gap forming means, is formed on the contact surface of the top 61 with the opening 57a. The projection 61a forms a slight gap between the top 61 and the opening 57a when the top 61 contacts the opening 57a. It is like this. Therefore, even if the hot water handle 59 is closed, the opening 57a is not completely closed. Incidentally, the gap forming means may naturally have a groove formed on the contact surface of the top 61 in addition to the above-mentioned protrusion 61a.

In the individual hot water supply system configured as described above, when water is used, the switch 47 is actuated manually or by the detection of the sensor, and the automatic open / close valve 45 is opened. When the automatic open / close valve 45 is opened, water can be supplied from the water supply pipe 7 to the hot water storage type water heater 41 and the water pipe 53, and the hot water handle 59 and the water handle 63 (opening / closing step) are set in desired amounts. The water is rotated, and water having a desired temperature is discharged from the water discharge port 65. When the use of water is completed, the switch 47 is activated, and the automatic open / close valve 45 is closed, the supply of water from the water supply pipe 7 is cut off. In this state, the volume of water warmed in the hot water storage type water heater 41 expands. The expanded water passes through the hot water supply pipe 57 and is drained into the faucet 55 through the gap between the top 61 and the opening 57a. By discharging the expanded water, the pressure in the hot water storage type water heater 41 does not rise, and the internal pressure is always kept constant. In the individual hot water supply system according to the present embodiment, as far as the drainage system is concerned, it is sufficient to replace the conventional comma 23 (see FIG. 6) with the top 61, and the relief valve 27, the special joint 31 (see FIG. 4), Also, since the piping work for these is not necessary, the workability is remarkably improved and the addition to the existing equipment becomes extremely easy.

Next, another embodiment of the individual hot water supply system according to the present invention will be described. FIG. 3 is an explanatory diagram showing a piping system of an individual hot water supply system according to another embodiment. The same members as those shown in FIG. 1 are designated by the same reference numerals, and the duplicated description will be omitted. One connection port of the three-way valve 71 is connected to the end of the water supply pipe 7 equipped with the water shutoff valve 43, and the other connection port of the three-way valve 71 is connected to the water pipe 73 and the hot water storage type water heater 41. Has been done. The three-way valve 71 is switched and controlled by a non-contact type switch which is a signal output provided on the washbasin 1 and a temperature control switch 79. The hot water supply pipe 57 of the hot water storage type water heater 41 is connected to a discharge port 81 provided on the washbasin 1, and the discharge port 81 has no handle and only the discharge port is opened. A water pipe 73 from a three-way valve 71 is connected to the hot water supply pipe 57 between the hot water storage type water heater 41 and the discharge port 81. That is, the hot water from the hot water storage type water heater 41 and the water from the water pipe 73 join together and are discharged from the discharge port 81.

According to the individual hot water supply system according to another embodiment configured as described above, as in the above, the expanded water passes through the hot water supply pipe 57 and is discharged from the discharge port 81, so that the hot water storage type hot water boiling is performed. It is possible to prevent the pressure in the vessel 41 from rising and to discharge the water in the desired temperature zone based on the set temperature because the three-way valve 71 is switched at the set temperature by the non-contact type switch and the temperature control switch 79. You can In addition, since the discharge port 81 mounted on the washbasin 1 does not need an opening / closing means, the degree of freedom in design can be increased, and the washbasin 1 has only one pipe hole. Since it is good, the workability can also be improved. Further, the hot water supply pipe 57 and the water pipe 73 are simplified, and these pipes are easily integrated with the hot water storage type water heater 41, so that unitization and prefabrication can be realized.

[0014]

[Effect of the device]

 As described in detail above, in the individual hot water supply system according to the present invention, an automatic opening / closing valve is provided in the water supply pipe of the hot water storage type water heater, and the gap forming means is provided on the contact surface of the top driven by the opening / closing means on the hot water side. As a result, the water that has been warmed and expanded in the hot water storage water heater is drained to the faucet through the gap between the top and the opening, and the internal pressure in the hot water storage water heater can be kept constant. You can As a result, the connection work between the hot water storage water heater and the drain pipe of the washbasin is eliminated, the installation workability can be significantly improved, and the reverse flow of water and odor can be reliably prevented. It will be possible to add more easily to the place where is needed.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a piping system of an individual hot water supply system according to the present invention.

FIG. 2 is an enlarged view showing a faucet mechanism used in the individual hot water supply system according to the present invention.

FIG. 3 is an explanatory diagram showing a piping system of an individual hot water supply system according to another embodiment.

FIG. 4 is an explanatory diagram showing a piping system of a conventional individual hot water supply system.

FIG. 5 is an explanatory view showing a faucet mechanism used in a conventional individual hot water supply system.

FIG. 6 is an enlarged view showing a main part of the water faucet mechanism.

[Explanation of symbols]

7 Water Supply Pipe 41 Hot Water Storage Water Heater 45 Automatic Opening / Closing Valve 47 Signal Output Means (Manual or Non-contact Type Switch) 53 Water Pipe 55 Faucet 57 Hot Water Supply Pipe 57a Opening 59, 63 Opening / Closing Means 61 Top 61a Gap Forming means (projection)

Claims (1)

[Scope of utility model registration request] 1. A faucet to which a water pipe and a hot water supply pipe are connected is provided with a pair of opening / closing means for opening and closing the water pipe and the hot water supply pipe, respectively, and a hot water storage type water heater for supplying hot water is provided in the hot water supply pipe. In the individual hot water supply system described above, an automatic opening / closing valve is provided in the water supply pipe of the hot water storage type water heater, and signal output means for operating the automatic opening / closing valve is provided in the vicinity of the faucet and is driven by the opening / closing means on the hot water side. Thus, the gap forming means is formed on the contact surface of the top that opens and closes the opening by opening and closing the opening of the hot water supply pipe in the faucet.