JPS60240945A - Hot water supplier - Google Patents

Abstract

PURPOSE:To avoid the wasteful supply of hot water with disregarding of time lapse when supplying hot water into a bath for example by setting the ingegral flow rate of hot water to be supplied from a hot water supplier by a method in which a hot water supply tube is divided into two sections, a flow rate detector is set to one section to know actual flow rate and integrated with the lapse of time, and a valve is operated. CONSTITUTION:Water is passed through a water pressure responder 2 and then through a heat exchanger 3. The water is partly passed through a flow rate detector 23 and partly through a hot water supply tube 5, and hot water is supplied through a valve 24 from a hot water supply tube 5' to the outside. When water of more than a fixed flow rate is flowed through a water pressure responder 2, an operation startup signal is sent to a heating controller 26, an operation signal is sent from the controller 26 to a heating controller 7, and a heat exchanger 3 is heated by a heater 8 to supply hot water. Signals from the detector 23 are integrated with the lapse of time in an integral flow rate arithmetic unit 28, and when an integral flow rate set by an integral flow setter 27 is reached, a stop signal is sent to the valve driver 28 to close the valve 24 to stop the supply of hot water to the tube 5'.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention attempts to temporally capture and control the amount of water in a water heater such as a gas instantaneous water heater.

Conventional configurations and their problems Traditionally, gas instantaneous water heaters have adopted a method of controlling the hot water temperature that is commonly known as the proportional control method, and it is possible to control the hot water temperature almost completely. It has become to. Conventional examples are shown in FIGS. 1, 2, and 3.

In FIG. 1, water enters a heat exchanger 3 via an inflow path 1, a hydraulic response device 2, and is supplied to the outside from a hot water outlet pipe 5. The operation of the hydraulic response device 2 will be explained with reference to FIG. Water enters the valve chamber 10 from the inflow path 1, passes through the gap between the control valve 11 and the control hole 12, and flows into the fire chamber 13. 14 is the control valve 11
a diaphragm cooperating with the diaphragm, the back side of which forms a secondary chamber 15, in which there is a control spring 16;
- It is biased toward the firebox 13 side. - The water flowing into the firebox 13 passes through a differential pressure generating body 19 formed by a differential pressure hole 16, a differential pressure valve 17 and a differential pressure spring 18, and is connected to the heat exchanger 3. At this time, a pressure difference (differential pressure) is created between the primary fire chamber 13 and the secondary chamber 15 by the differential pressure communication hole 20, and the receiver is connected to the plate 21 and the rod 2.
2 to send a signal to the outside. As is well known, the valve configuration shown in the figure also has a governor effect that keeps the amount of water almost constant even if the water pressure rises.

Next, the operation of the conventional example will be explained with reference to FIG.

When a constant flow rate or more flows through the hydraulic response device 2, an operation start signal is sent to the hot water supply controller 9, and then sent from the heating control section 11 to the heating controller 7, and the heating device 8 heats the heat exchanger 1'. The bath is served. The hot water temperature is determined by the hot water temperature setting section 10.
The heating controller 11 calculates the temperature signal set by the temperature signal and the signal detected by the outlet hot water temperature detector 4, and sends a control signal to the heating controller 7 by multiplying it by feedback so that both are equal. , which has a configuration commonly called a proportional control system. In actual use, this conventional configuration has been able to control the tapping temperature almost perfectly. For example, although a configuration example is omitted, a configuration has also been proposed in which the water volume is automatically reduced to equal the set temperature in order to resolve the temperature drop caused by overflowing water. However, since the amount of water changes due to changes in water pressure, variations in the water pressure response device and water flow controller, and the resistance of the hot water supply light, it is difficult to know the flow rate over time.
It was difficult to control.

OBJECTS OF THE INVENTION The present invention solves these drawbacks, and aims to further improve the quality of hot water supply and ease of use by knowing the actual flow rate and controlling it by integrating it over time.

Structure of the Invention In order to achieve the above object, the present invention divides the tapping pipe into two parts, and arranges a flow rate detection device on one side to know the actual flow rate.
It is configured to operate the on-off valve based on calculations based on the passage of time.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4, 5, and 6. Figure 4 is a configuration diagram of this embodiment, in which water flows through the inflow channel 1.
After passing through the water pressure response device 2 and the heat exchanger 3, one side is connected to the outlet pipe 5, and the other side is connected to the flow rate detection device 2.
3 and further passes through the on-off valve 24 and is supplied to the outside from the outlet pipe 5'.

The structure of the flow rate detection device 23 of FIG. 5 is shown. When the permanent magnetic body 23b installed on the impeller 23a rotates due to the flow of water, the magnetic resistance element 23c captures the magnetic change,
It is already known that the rotation speed can be detected as a pulse signal, and the rotation speed has linear characteristics with respect to the flow rate.

Therefore, the flow rate can be determined by measuring the number of pulses.

Next, the operation will be explained using the block diagram shown in FIG.

Operation starts when a constant flow rate or more flows through the hydraulic response device 2. A signal is sent to the heating control unit 26, and the heating control unit 26 sends an operation signal to the heating controller 7, which in turn sends an operation signal to the heat exchanger 3.
is heated and hot water is poured out. The hot water temperature is determined by the hot water temperature setting section 2.
The temperature signal set in step 5 and the signal detected by the hot water temperature detector 4 are integrated in the heating control unit 26, and the control signal to the heating controller 7 is multiplied by feed pump so that the two become equal. It has the same configuration as the conventional example.

On the other hand, the signal from the flow rate detector 23 is sent to the integrated flow rate calculation unit 28.
When the integrated flow rate set by the integrated flow rate setting unit 27 is reached, a stop signal is sent to the on-off valve drive unit 28, the on-off valve 24 is closed, and the tap water pipe 5' is The hot water supply to the facility will be stopped. In addition, the integrated flow rate setting unit 27 is equipped with an integrated flow rate release unit in case it is used without specifying the integrated flow rate, and in the released state, the on-off valve 24 is always in an open state. . Moreover, when the temperature of the hot water does not reach the set temperature, the opening/closing valve 24 is configured to be closed by the timer 30 after a certain period of time has elapsed.

Effects of the Invention According to the present invention, it is possible to set the cumulative flow rate of water dispensed from the water heater, so that, for example, when pouring water into a bathtub, there is no need to forget the time and pour water in vain. By dividing the hot water pipe and installing a flow rate detector, it can be used as a dedicated circuit, so even if a hot water heater in another location is used, the total flow rate will not be distorted, making it an energy-saving layer. Well, usability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a conventional example, Fig. 2 is a block diagram showing a hydraulic response section of the conventional example, Fig. 3 is a block diagram showing the operation of the conventional example, and Fig. 4 is a block diagram showing an embodiment of the present invention. FIG. 5 is a configuration diagram of the same flow rate detection device, and FIG. 6 is a block diagram showing the same operation. 2: Hydraulic response device, 3: Heat exchanger, 4: Outlet hot water temperature detector, 6, Fuel introduction path, 7. Heating controller, 8: Heating device, 9
．． hot water supply controller, 10: hot water outlet temperature setting section, 11: heating control section, 23: flow rate detection device, 24: opening/closing valve, 25: hot water outlet temperature setting section, 26; heating control section, 27: integrated flow rate setting section,
28: Integrated flow rate calculation section, 29: Opening/closing valve drive section, 3o: Timing device, 31: Hot water supply controller. Name of agent: Patent attorney Toshio Nakao and 1 other person Ward C4 Keiba-p

Claims (1)

[Scope of Claims] (1) A hydraulic response device, a heat exchanger connected to the hydraulic response device, a heating device for the heat exchanger, a heating controller for controlling the heating device, and the heat exchanger. A hot water temperature detector provided on the outlet side of the hot water outlet and a hot water outlet pipe located behind the hot water temperature detector are branched into two, a flow rate detection device is disposed on one side, and a flow rate detection device is disposed on one side, and The water pressure response device further includes an on-off valve, a hot water tap temperature setting section, an integrated flow rate setting section, an integrated flow rate calculation section, an on-off valve drive section that controls the on-off valve, and a heating control section that controls the heating controller. The integrated flow rate calculation is performed by starting combustion and controlling the outlet temperature based on the signal from the integrated flow rate setting unit and the signal from the flow rate detection device. The water heater is configured to control the on-off valve by transmitting a signal from the on-off valve driving section to the on-off valve driving section when the set integrated flow rate is reached. @) The water heater according to claim 1, wherein the cumulative flow setting section includes a cumulative flow canceling section. (3) If the set temperature is not reached, use the timer to
The water heater according to claim 1, wherein the on-off valve is closed.