JP3482270B2 - Gas water heater fading prevention system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for preventing a gas water heater from disappearing.

[0002]

2. Description of the Related Art A gas water heater heats the water supplied from the water supply with the heat of combustion of the gas to supply hot water. However, in order to prevent water heating, the gas should be burned if the water pressure from the water supply is not sufficient. Built-in safety device to stop.

Since this safety device works even during hot water supply, even if the hot water is ignited once, if the water pressure of the water supply from the water supply decreases to a predetermined threshold value or less, gas combustion is stopped. Will be done. In this case, the hot water that had come out of the gas water heater would suddenly turn into water, so the user suspects that the gas water heater may have failed.

[0004]

By the way, in an apartment house or the like, water is temporarily stored in a clean water tank from the water supply and the water in the clean water tank is supplied to each house. Although the water pressure when supplying clean water from the clean water tank to each house is kept as constant as possible, the water pressure of the clean water decreases when a large amount of water is used at each house at the same time. Sometimes. For example, in many households, when flushing toilet water at the same time, the water pressure of clean water may decrease.

Therefore, even if the gas water heater is not malfunctioning, when many households simultaneously flush the toilet water to reduce the water pressure of the tap water during hot water supply by the gas water heater, the gas water heater will not discharge gas. The combustion is stopped and so-called flame extinguishing occurs. In such a case, the user of the gas water heater does not know the cause of the extinguishing of the flame, so the person in a hurry should call a gas equipment repair worker. Since it often returns to, the cause of the disappearance cannot be understood, and appropriate measures cannot be taken.

The present invention has been made in view of the above points, and by ensuring the water pressure of the clean water required when supplying hot water to the gas water heater, prevents the flame of the gas water heater from extinguishing. The purpose is to provide a system.

[0007]

In order to achieve the above-mentioned object, the present invention provides a tap water tank for storing tap water, and a toilet pipe for supplying tap water from the tap water tank to the toilet side. A gas water heater pipe for supplying the clean water from the clean water tank to the gas water heater side, a water amount control valve for adjusting the amount of clean water flowing through the toilet pipe, and the water supplied by the gas water heater pipe. A gas water heater that heats water with the heat of combustion of gas to supply hot water. When the gas water heater is in the hot water supply operation, the determination unit determines whether or not the hot water supply operation is in progress. And a transmitter for transmitting a water amount limit signal, the water amount control valve has a receiver for receiving a water amount limit signal from the transmitter, and when receiving the water amount limit signal, the toilet pipe is The amount of tap water flowing is limited to the above To constitute a lighting failure prevention system of the gas water heater to adjust to be less than when not receiving the items.

[0008]

According to the present invention, with the above configuration, a water amount limiting signal is transmitted during the hot water supply operation of the gas water heater, and the water amount control valve receiving this water amount limiting signal causes the amount of clean water flowing through the toilet pipe to be limited. Adjust so that it is less than when no signal is being received.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a gas water heater extinguishing prevention system according to the present invention.

The clean water from the water supply pipe 1 is temporarily stored in the clean water tank 2, and then supplied to the flush tank 6 and the gas water heater 9 by the toilet pipe 3 and the gas water heater pipe 8, respectively.

The clean water of the toilet pipe 3 is stored in the flush tank 6 from the toilet water supply port 5 through the water amount control valve 4. When using the toilet to flush water, the water in the flush tank 6 flows out from the toilet drain port 7, flushes the toilet, and then flows into the sewer.

On the other hand, the tap water of the gas water heater pipe 8 is supplied to the gas water heater 9, and when the gas water heater 9 is operated for hot water supply, the tap water flows through the gas water heater 9 and the burner 93 burns. It is heated by heat and supplied with hot water.

The gas water heater 9 is provided with a water entry judging section 91 and a transmitting section 9
2, and the water inflow determination unit 91 detects whether or not the clean water supplied from the gas water heater pipe 8 is flowing through the gas water heater 9 by a flow sensor or a water pressure sensor (not shown). When flowing in the vessel 9, that is, during the hot water supply operation, a hot water supply signal indicating that is output to the transmitting unit 92. Upon receiving the hot water supply signal from the water entry determination unit 91, the transmission unit 92 transmits a water amount limiting signal to the water amount control valve 4 in order to limit the amount of clean water flowing out from the toilet water supply port 5.

The water quantity control valve 4 has a receiving section 41. When the receiving section 41 receives the water quantity limiting signal from the transmitting section 92 of the gas water heater 9, the receiving quantity is smaller than when the water quantity limiting signal is not received. The opening of a valve (not shown) is narrowed so that the amount of water is limited so that only clean water is discharged from the toilet water supply port 5 at the same time.
When using a toilet, a certain amount of clean water stored in the flush tank 6 flows out from the toilet drain port 7 and is washed.
Clean water is supplied from the toilet water supply port 5 so as to supplement the amount of clean water that has flowed out.

By doing so, the gas water heater 9
During the hot water supply operation, a lot of clean water does not flow to the toilet side at the same time, and sufficient clean water is supplied to the gas water heater 9. Therefore, the safety device operates during the hot water supply and the hot water is stopped halfway. It will never happen. On the other hand, at this time, the clean water flowing to the toilet side is limited, but since the toilet flushes the clean water using the clean water once stored in the flush tank 6, there is a sudden problem even if the quantity of clean water flowing to the toilet side becomes small. There is no.

After that, when the hot water supply operation of the gas water heater 9 is completed, the water entering determination unit 91 detects that the clean water supplied from the gas water heater pipe 8 is not flowing in the gas water heater 9, The output of the hot water supply signal to the transmitter 92 is stopped. The transmitting unit 92, which has stopped receiving the hot water supply signal from the water entering determination unit 91, stops transmitting the water amount limiting signal to the water amount control valve 4. As a result, the water amount control valve 4 returns the opening degree of a valve (not shown) to its original value, and returns the amount of clean water flowing out from the toilet water supply port 5 to the normal amount.

In the present embodiment, the gas water heater 9
By detecting whether or not tap water is flowing inside, it is possible to detect whether or not the gas water heater is in the hot water supply operation.
The present invention is not limited to this, and for example, it may be considered that the hot water supply operation is being performed when clean water having a predetermined value or more is flowing in the gas hot water supply device, or the gas hot water supply device operated by the user It may be considered that the hot water supply operation is being performed when the hot water supply start switch is turned on.

Further, although FIG. 1 shows one gas water heater 9, one water control valve 4, one toilet water inlet 5 and one flush tank 6 for simplicity, in the case of an apartment house, a gas water heater or There is a toilet water supply port and flush tank, and only one water control valve needs to be installed at the position before the toilet pipe branches to each door. In such a case, if the gas water heater of any one of the apartments is supplying hot water, the water amount is controlled by controlling the one water amount control valve installed at the position before branching to each house. You can do this. Also, if the water flow control valve is installed in the toilet pipe after branching to each house, if any one of the apartments has a gas water heater that is supplying hot water, install it at the position after branching to each house. It is only necessary to control the water amount control valves of all the units that are provided to limit the water amount.

In this embodiment, the water amount control valve is controlled during hot water supply of the gas water heater to reduce the amount of clean water flowing to the toilet. However, the present invention is not limited to this, and, for example,
It is also possible to previously obtain statistically a time zone in which a large amount of tap water is used at the same time, and control the water volume control valve during this zone to reduce the amount of tap water flowing to the toilet side.

The communication between the transmitter 92 of the gas water heater 9 and the receiver of the water amount control valve 4 may be wired or wireless. In the case of wireless communication, any communication such as radio waves, light, and sound waves may be used.

[0022]

As described above, according to the present invention,
Even if there is a large amount of tap water being used at the same time in an apartment house, by ensuring the water pressure of the tap water required when supplying hot water to the gas water heater, the gas water heater can be extinguished to prevent the flame from extinguishing during hot water supply. A prevention system can be provided.

It should be noted that the phenomenon that the flame disappears during hot water supply in a large amount of water that is used at the same time in an apartment, etc. is low in reproducibility when a gas water heater repair worker goes to the site, and it is troublesome to deal with it. Moreover, the number of dispatch requests for repair workers due to this phenomenon is large. According to the present invention, it is possible to prevent the flame from extinguishing during the hot water supply of the gas water heater, which is also effective in reducing the number of dispatches of repair workers and reducing the repair cost.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an extinguishing prevention system for a gas water heater according to the present invention.

[Explanation of symbols]

1 Water supply piping 2 Water tank 3 Toilet piping 4 Water volume control valve 41 Receiver 5 toilet water supply 6 flush tank 7 toilet drain Piping for 8 gas water heaters 9 gas water heater 91 Water entry judgment unit 92 Transmitter

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masa Ishimoto 2-11-2 Kajigaya, Takatsu-ku, Kawasaki-shi, Kanagawa No. 222 Kajigaya Dormitory (72) Inventor Satoshi Morita 6-9-5 Chuo, Ota-ku, Tokyo 24 Omori Dormitory No. (56) Bibliography Actual development 2-52050 (JP, U) Actual development 3-27258 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24H 1/10 F23N 1 / 08

Claims (2)

(57) [Claims] 1. A clean water tank for storing clean water, and a toilet pipe for supplying clean water from the clean water tank to the toilet side.
A gas water heater pipe for supplying the clean water from the clean water tank to the gas water heater side, a water amount control valve for adjusting the amount of clean water flowing through the toilet pipe, and the water supplied by the gas water heater pipe. A gas water heater that heats water by the heat of combustion of gas to supply hot water, wherein the gas water heater determines whether or not the hot water supply operation is in progress, and when the determination unit determines that the hot water operation is in progress And a transmitter for transmitting a water amount limit signal, the water amount control valve has a receiver for receiving a water amount limit signal from the transmitter, and when receiving the water amount limit signal, the toilet pipe An extinguishing prevention system for a gas water heater, wherein an amount of flowing clean water is adjusted so as to be smaller than that when the water amount limiting signal is not received. 2. The hot water supply operation according to claim 1, wherein the determination unit detects the amount of clean water flowing in the gas water heater and determines that the hot water supply operation is being performed when the detected clean water amount is equal to or greater than a predetermined value. Gas water heater fading prevention system.