JPS63263349A - Hot water feeder - Google Patents

Abstract

PURPOSE:To detect presence or absence of leaked water positively with a simple configuration at an initial stage by a method wherein a continuous time for a flow rate of fed water is measured. CONSTITUTION:In case of an accident of leakage of water, even if a user stops a water feeding after a desired feeding of water, a sensing of flow rate by a flow rate caused by a leaked water from a damaged part in a hot water storing tank 21 or a piping or a safety valve 27 is continuously performed, an overflow water in a bath tub due to a forgetting of stopping water of a user is continuously performed for its detection of flow rate. A comparing part 31 of a control part 30 compares, for example, a continuous time of sensing of a flow rate with a reference set value time, a discriminating part 32 may judge presence or absence of an abnormal condition such as a water leakage or overflow and in case that the abnormal condition is present, a transmittance part 33 is operated to operate the water stopping means or an informing means 34. In case of a longer period, even if the operation of the informing means 34 is stopped in advance, the control part 30 may compare data of a water flow rate meter 25 with a reference setting value and judging it so as to perform an automatic control of an opening or closing of an electromagnetic water stopping valve 24. Therefore, in case the hot water feeding unit shows an accident of water leakage or a forgetting of stopping water, tap water from a source of water supply is automatically shut, so that the hot water storing tank 21 is not applied with any a water pressure head and so a flow rate of leaked water can be instantly and rapidly decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water heater configured to prevent the spread of an accident at an early stage in the event of water leakage from the water heater.

BACKGROUND OF THE INVENTION In recent years, due to the effects of deteriorating water quality, the problem of water-induced corrosion of water supply and hot water supply equipment has been attracting attention. In particular, when water supply equipment is installed in high-rise apartment buildings, etc., if water leaks, it will not only be a problem for the users of the equipment, but will also cause a very serious flooding problem for people downstairs as well.

As a countermeasure for this, in addition to waterproofing the floor where the equipment is installed or installing a new drain pan to treat the drainage water, measures can be taken by installing special water leakage detection equipment around the equipment. There is.

An example of a conventional water leakage detection device will be described below.

FIG. 3 shows a schematic configuration diagram of a conventional water leakage detection device. In this FIG. have.

FIG. 4 shows a structural diagram of the water leak detection band 5, in which electrodes 5a are provided at a plurality of locations on the outer periphery of an electrode lead wire 6b having an insulating coating 5c. FIG. 5 shows an example of the use of the same-level water detection device, in which a water leakage detection band 5 from the water leakage detection device main body 1 is fixed to the floor around the equipment 7 using a sticker 6.

Next, the operation will be explained based on the above-mentioned FIGS. 3, 4, and 6. Now, when water leaks from the equipment 7, the water flowing out due to this leak reaches the water leak detection zone 5. On the surface of the water leakage detection band 5, an electric current fM5 a is applied at certain intervals.
It's hardened. Furthermore, two electrode lead wires 5b are buried inside the water leakage detection band 5, and voltages of different polarities are applied to them. The electric i5a mentioned earlier is 2
They form a pair, and are separately connected to electrode lead wires 5b having different polarities. That is, the two electrode lead wires 5b have a plurality of electrodes 5a, and each electrode 5a is independent. The water that has reached the water leakage detection zone 5 electrically connects the independently provided electric WiSa via the resistance thereof. The electrode 5a is connected to the electrode lead wire 5b as described above, and since voltages of different polarities are always applied to the two electrode lead wires 5b, the two electrode leads 5b are connected to the electrode lead wire 5b. Lead wire 5
A current will flow between b. Further, the electrode lead wire 5b is connected to the water leakage detection device body 1, and the water leakage detection device body 1 determines this phenomenon as water leakage and sends an alarm buzzer 2 and an alarm provided in the water leakage detection device body 1. Lamp 3 notifies the user of water leakage.

Problems to be Solved by the Invention However, with the above-described configuration, water leakage cannot be detected unless a large amount of water leaks, which may cause considerable damage to the equipment 7. As a result, there was a fear that it would be difficult to repair the equipment 7 and surrounding buildings. In addition, not only is the installation method of the water leakage detection band 5 complicated, but the scale of the equipment for the water leakage detection device 1 itself is too large, resulting in a high price. was.

In view of the above problems, it is an object of the present invention to provide a water leakage detection device that can detect water leakage at an extremely early stage, has a very simple configuration, and can detect water leakage more reliably. It is something.

Means for Solving the Problems In order to solve the above problems, the present invention provides a hot water storage tank;
This hot water storage tank is equipped with a water supply pipe having a flow rate measuring section in the middle, and a control section is configured to detect the presence or absence of an abnormality based on the continuous time of the water supply flow rate of the flow rate measuring section.

Operation The present invention has the above-described configuration, so that when a water leak occurs in the water heater, the control section immediately determines whether or not there is a water leak based on the continuous time of the water supply flow rate of the flow rate measuring section. At the same time, if there is a water leak, the water shutoff means and notification means are energized. As a result, water leakage accidents can be dealt with at an early stage, thereby preventing damage and expansion caused by water leakage accidents.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

FIG. 1 shows a schematic configuration diagram of a water heater according to an embodiment of the present invention, and 21 is a hot water storage tank equipped with a heating source 22 at the bottom. , a water stop valve 23, an electromagnetic water stop valve 24 serving as a water stop means, and a water flow meter 25 serving as a flow rate measuring unit connected in this order to the water supply pipe 2.
6 is connected. In addition, there is a safety valve 2 on the way at the top.
7. Hot water supply pipes 29 each having a cock 28 connected to its tip are connected. Furthermore, a control section 30 is provided that controls the electromagnetic water-stopping pulp 24 based on data from the water flow meter 25. Note that the control section 30 includes a comparison section 31, a determination section 32, and a transmission section 33.

The operation of the water heater configured as described above will be explained using FIG. 1. First, if the water heater is being used normally, it will supply the required amount of water in the kitchen or bathroom, and then turn off the water. At this time, considering the continuous time of the water supply flow rate (equal to the hot water supply flow rate) of the water flow meter 25, for example, if the flow rate is 101/min for one hour, the total amount is 6001, which is 30
Even if the time required to fill the bathtub with capacity 0 (30 minutes) is used, there will be double the margin. Therefore, for example, if the flow rate of the water flow meter 25 is detected continuously for more than one hour, something abnormal is occurring, and an abnormal condition such as a water heater leakage accident or the user forgetting to turn off the water may be occurring. . In other words, water leakage accidents occur because even if the user turns off the water after supplying the desired hot water, the flow rate continues to be detected due to water leakage from damaged parts such as the hot water storage tank 21, piping, or safety valve 27, and the user forgets to turn off the water in the bathtub. In the case of overflow, flow rate detection continues. Here, the comparison unit 3 of the control unit aO
1, for example, the continuous time of flow rate detection is 1 hour compared to the standard setting value of 1 hour, and depending on the difference, the determining section 32 determines whether there is an abnormality of water leakage or overflowing, and if there is an abnormality, the transmitting section 33 is activated. The water stop means and notification means 34 are activated. Of course, the notification means a4 can be operated effectively even when the user is absent, but if the notification means a4 is to be used for a long period of time, the operation of the notification means a4 may be stopped in advance. In other words, the control unit 30
The opening and closing of the electromagnetic water-stopping pulp 24 is automatically controlled by comparing and determining the data with reference setting values. Therefore, if the water heater leaks or the user accidentally forgets to turn off the water, tap water from the water supply source is automatically shut off, so no head pressure is applied to the hot water tank 21, and water leaks. The amount of water leaking from the damaged hole in the part can be immediately reduced, minimizing the spread of damage caused by flooding, and allowing the user to promptly take measures to prevent an accident. On the other hand, since the water is automatically shut off even if the user makes a mistake, hot water is not wasted, flooding due to overflow is kept to a minimum, and the water heater does not run out or run out of hot water. .

In this embodiment, the control unit can also issue advance warnings and warnings to the user, as well as actions such as shutting off the power.

Furthermore, although a water flow needle is used in this embodiment, the same effect can be expected with a so-called sensor that can detect the flow of hot water in piping.

Effects of the Invention As described above, according to the present invention, the water supply source is immediately cut off by detecting the flow of water in the flow rate measurement unit, thereby minimizing the spread of damage caused by water leakage, and preventing hot water leakage caused by user's erroneous operation. This also minimizes wasteful emissions, allowing users to use the product with peace of mind.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a water heater according to an embodiment of the present invention;
The figure is a schematic perspective view of a conventional water leak detection device, Section 3 is a partial perspective view of a water leak detection band of the conventional device, and FIG. 4 is a schematic perspective view showing an example of the use of the conventional device. 21...Hot water storage tank, 25...Water flow needle (flow rate measurement part), 26...Water supply piping, 30...
...control section. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 4

Claims (3)

[Claims] (1) A control unit comprising a hot water storage tank and a water supply pipe having a flow rate measuring section in the middle of the hot water storage tank, and detecting the presence or absence of an abnormality based on the continuous time of the water supply flow rate of the flow rate measuring section. Water heater. (2) The control unit energizes the notification means when the continuous time of the water supply flow rate is equal to or longer than a predetermined time.
Water heater described in section. (3) The water heater according to claim 1, wherein the control unit energizes the water stop means of the water supply pipe when measuring a continuous time of the water supply flow rate for a predetermined time or more.