JPH0372905B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a control device for controlling the amount of water in a water heater.

Configuration of conventional examples and their problems It is already known that water heaters automatically control the amount of combustion and water to stabilize the temperature of hot water, but in normal conditions, water is supplied at a constant amount for heating. , only a constant amount of water was supplied at a constant temperature.

Purpose of the Invention The present invention provides a pine surge effect when using a shower by keeping the water temperature in a water heater constant and changing the water temperature over time.

Structure of the Invention To achieve this object, the present invention includes a hot water temperature detector for detecting the hot water temperature, a temperature controller for controlling the hot water temperature in accordance with a signal from the hot water temperature detector, and a water flow rate for detecting the amount of hot water supplied. a detector, a water flow controller that controls the amount of hot water supplied by being controlled by a drive device that operates in accordance with a signal from the water flow sensor, and a signal generator that generates a signal whose magnitude continuously changes with time. and a hot water supply controller, which controls the drive device according to signals from the water amount detector and the signal generator.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention is shown in FIGS.
This will be explained using figures. In Fig. 1, reference numeral 1 denotes a water flow controller, which consists of a valve body 2 and a casing 3. Water enters the primary valve chamber 5 from the inlet passage 4, passes through the gap between the water flow control valve 6 and the control hole 7, and passes through the secondary valve chamber. The water flows into the orifice 9, is heated by the heating device 11 in the heat exchanger 10, and is supplied to the outside from the outlet pipe 12. The valve shaft 6a of the water flow control valve 6 is screwed to the casing 3, and is connected to the motor 13 and gearbox 14.
The water flow control valve 6 is displaced in the vertical direction in the figure by a driving device 15 consisting of the following. The differential pressure across the orifice 9 is guided to a water amount detector 18 through differential pressure holes 16 and 17, and the water amount detector 18 detects the amount of water based on the differential pressure across the orifice 9 and converts it into an electrical signal. The hot water outlet pipe 12 has a hot water outlet temperature detector 19, and the outlet hot water temperature detector 19 detects the temperature of the hot water heated by the heat exchanger 10. Fuel is regulated by a temperature controller 21 from a fuel supply path 20 and combusted by a heating device 11. 22 is a hot water supply controller which inputs the output hot water temperature sensor 20 signal, and a temperature controller 21
is output to the drive device 15.

In the block diagram of Fig. 2, hot water controller 2
2 is composed of a hot water temperature setting section 23, a temperature control section 24, a water flow control section 25, a signal generation section 26, a differential circuit section 27, and a switch 28. The hot water temperature is controlled by the hot water temperature setting section 2, which is composed of a variable resistor, etc.
3 and the hot water temperature detector 19 are calculated by the temperature controller 24, the temperature controller 21 is driven by Kochi's PID control, and the heat generation amount of the heating device 11 is adjusted. The hot water temperature of the exchanger 10 is kept constant. For water flow control, a pre-stored signal is generated by a signal generator 26 which is turned on and off by a switch 28, and a deviation from the water flow detector 18 is calculated by a water flow controller 25 to drive a drive device 15. 1 changes the amount of water over time.

Next, the operation will be explained. When the power is turned on and water flow starts, combustion in the heating device 11 starts, and after a slight delay, the temperature of the hot water rises. The deviation of the hot water temperature with respect to the hot water temperature setting is determined by the hot water temperature setting section 2.
3 and the outlet hot water temperature detector 19 are calculated by the temperature controller 24, and the temperature controller 21 is controlled to adjust the heating amount and keep the outlet hot water temperature constant. After the water temperature has stabilized, when the switch 28 is closed by the user, a signal is generated from the signal generator 26, transmitted to the drive device 15 via the water flow control section 25, and controlled by the water flow controller 1. The valve 6 is rotated forward or reverse.
The amount of water is changed by rotating the water amount control valve 6. The amount of water changes one after another depending on the signal sent by the signal generator 26. Changes in water amount are detected by water amount detector 1
8 and is fed back, and is calculated and corrected by the water flow control unit 25, so the water volume changes one after another following the signal from the signal generation unit 26 regardless of the water supply pressure, making it easy to use for showering. It is a good stimulus and has a pine surge effect. The degree of change in the amount of water is determined by the signal generator 2 in accordance with the heating capacity of the heating device 11, so that the amount of water is changed within a predetermined amount of water.
6 is preset. When the switch 28 is opened, the change in the amount of water stops and normal hot water supply with a constant amount of water is resumed. In addition, the signal from the water amount detector 18 is transmitted to the differential circuit section 27 to calculate the rate of change in the amount of water flowing. Prevents sudden changes in water temperature.

Note that when the heating device 11 is a burner, a heating material control valve is used as the temperature controller 21, and when the heating device 11 is an electric heater, a power regulator is used. Water amount detector 18
is not limited to differential pressure detection, and may be any means that can obtain an electrical signal, such as a turbine meter or vortex flowmeter.

The drive device 15 may be not only a motor but also a solenoid or other device capable of linear drive.

Effects of the Invention As described above, the present invention includes a hot water temperature detector that detects the hot water temperature, a temperature controller that controls the hot water temperature in accordance with a signal from the hot water temperature detector, and a water flow rate detector that detects the amount of hot water supplied. a water supply controller that controls the amount of hot water supplied by being controlled by a drive device that operates in response to a signal from the water amount detector; and a signal generator that generates a signal whose magnitude continuously changes over time. The driving device is controlled by the signals from the water amount detector and the signal generator, and the amount of hot water is continuously changed and supplied, so when the shower is used, the amount of hot water changes and the pine surge effect is produced. Not only can it be used to clean dishes, but it also makes it easier to remove stains.

In addition, when using the shower, the signal from the water flow detector is fed back to the water flow controller to detect changes in water flow.
It is stable against changes in water supply pressure and can reliably respond to signals from the signal generator.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a control block diagram showing an embodiment of the invention, and Fig. 3 is a block diagram showing an embodiment of the present invention.
The figure is a graph showing changes in water amount in an example of the present invention. 1... Water flow controller, 15... Drive device, 18...
...Water flow rate detector, 19...Hot water temperature sensor, 21...
...Temperature controller, 22...Hot water controller, 26...Signal generator, 28...Switch.

Claims (1)

[Scope of Claims] 1. A hot water temperature detector that detects the hot water temperature, a temperature controller that controls the hot water temperature in accordance with a signal from the hot water temperature detector, a water amount detector that detects the amount of hot water supplied, and the water amount. A water supply controller that controls the amount of hot water supplied by being controlled by a drive device that operates in accordance with a signal from a detector, and a water supply controller that has a signal generator that generates a signal whose magnitude continuously changes over time. A hot water supply control device comprising: a hot water supply control device that controls the drive device according to signals from the water amount detector and the signal generation section. 2. The hot water supply control device according to claim 1, wherein the hot water supply controller includes a switch for starting and stopping the operation of the signal generating section.