JPS5997451A - Hot water supply controlling device - Google Patents

Abstract

PURPOSE:To enable a shower to give rise to a massage effect by changing the quantity of water periodically by a method wherein a drive device capable of changing the set quantity of a water quantity controller is operated within a predetermined range. CONSTITUTION:When a switch 28 is closed, the signal from a signal generating section 26 is transmitted to the drive device 15 through a water quantity control section 25 and the quantity of water is changed by the water quantity controller 1. As the variation of the water quantity is detected by a water quantity detector 18 and fed back, the quantity of water changes in sequence in response to the signal from the signal generating section 26 irrespective of the pressure of the feed water. The signal from the water quantity detector 18 is transmitted to a differential circuit section 27, the rate of variation of the quantity of circulating water is operated and the calorific value of the heating device 11 is adjusted by a heating control section 24 before the hot water temperature changes, to thereby prevent the variation of the temperature of the hot water.

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.

4. PI Conventional configuration and its problems It is already known that hot water supply equipment automatically controls combustion, volume, and water volume to stabilize the temperature of hot water. It was a device that heated the water, and only supplied a constant amount of water 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 amount of water over time.

Structure of the Invention In order to achieve this object, the present invention detects the outlet temperature of the heat exchanger heated by the heating device with a temperature detector, and calculates the signal of the outlet temperature setting unit and the outlet temperature signal in the heating control unit. death,
The system controls the heating controller, and then sends a signal from the signal generating section to the water amount control section according to the user's selection, thereby changing the amount of water over time within a predetermined water amount range.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3. In Figure 1, 1 is the water flow controller and the valve body 2
and a casing 3, and the water flows from the inlet passage 4 to the primary valve chamber 6.
The water flows into the secondary valve chamber 8 through the gap between the water flow control valve 6 and the control hole 7, is heated through the orifice 9 by the heat exchanger 10 in the heating device 11, and is supplied to the outside through the outlet pipe 12. be done.

A valve shaft 6a of the water flow control valve 6 is screwed to the casing 3, and the water flow control valve 6 is displaced in the vertical direction in the figure by a drive device 15 consisting of a motor 13 and a gear box 14.

The differential pressure across the orifice 9 is guided to the water amount detector 18 through the differential pressure holes 16, 17, and the water amount detector 18 detects the amount of water using the differential pressure across the orifice 9 and converts it into an electrical signal. There is a hot water temperature detector 19 in the hot water tap pipe 12, and the hot water temperature detector 19 detects the temperature of hot water heated by the heat exchanger 10. The fuel is regulated by a heating controller 21 through a fuel supply path 20 and combusted by a heating device 11. A hot water supply controller 22 inputs a signal from the hot water temperature detector 20 and outputs it to the heating controller 21 and the drive device 15.

In the block diagram of FIG. 2, the hot water supply controller 22 is comprised of a hot water temperature setting section 23, a boost control section 24, a water amount control section 25, a signal generation section 26, a differential circuit section 27, and a switch 28. To control the hot water temperature, the heating control unit 24 calculates the signals from the hot water temperature setting unit 23 and the hot water temperature detector 19, which are composed of variable resistors, etc., and drives the heating controller 21 by known PID control to control the heating. By adjusting the calorific value of the device 11, the temperature of hot water discharged from the heat exchanger 1o is kept constant. For water flow control, a pre-stored signal is generated in a signal generator 26 that is turned on and off by a switch 28, the deviation from the water flow detector 18 is calculated in the water flow controller 26, the drive device 15 is driven, and the water flow controller 1 It 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 outlet hot water temperature with respect to the outlet hot water temperature setting is calculated by the respective signals of the outlet hot water temperature setting section 23 and the outlet hot water temperature detector 19 in the heating control section 24, and the heating controller 2
1 to adjust the heating amount and keep the 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, and the water flow controller 25
The water is transmitted to the drive device 15 via the water flow controller 1 to rotate the water flow control valve 6 of the water flow controller 1 in the normal or reverse direction. 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 out by the signal generator 26. Changes in the amount of water are detected by the water amount detector 18, fed back, and calculated and corrected by the water amount controller 25, so that the water amount changes one after another following the signal from the signal generator 26 regardless of the pressure of the water supply. When used, it becomes a pleasant stimulus and has a pine surge effect. The degree of water amount change is preset by the signal generator 26 in accordance with the heating capacity of the heating device 11 so that the change is within a predetermined water amount range.

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. Prevent changes in temperature.

Note that if the heating device 11 is a governor, a fuel control valve is used as the heating controller 21, and if it is an electric heater, a power regulator is used. The water amount detector 18 is not limited to differential pressure detection.
Any means that can obtain electrical signals, such as a turbine meter or vortex flow meter, may be used.

The drive device 15 may be not only a motor but also a linear drive device such as a lenoid.

Effects of the Invention As described above, the present invention detects the hot water temperature of the heat exchanger heated in the heating equipment with the hot water outlet temperature detector, and transmits the signal of the hot water outlet temperature setting unit and the output hot water temperature to the heating control unit. After calculating and controlling the heating controller to stabilize the outlet temperature, the drive device that adjusts the set water volume of the water flow controller is driven within a predetermined water flow range using the signal from the signal generator to adjust the water flow over time. Since it has been changed to , it is not only possible to give a pine surge effect when using the shower, but also effective for washing dishes.

Changes in water volume are stable against changes in water supply pressure because the water flow detector signal is fed back, and the heating controller is controlled by calculating the rate of change in the water flow detector signal, so sudden changes in water flow can be avoided. It is of high practical value as it can prevent transient changes in hot water temperature due to changes.

[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 present invention, and FIG. 3 is a graph showing changes in water amount in the embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Water amount controller, 10...Heat exchanger, 11...Heating device, 16...Drive device, 18...Water amount Detector, 19... Hot water temperature detector, 21... Heating controller, 22...
...Hot water controller, 23...Dispatch temperature setting section, 24...Heating control section, 26...Water flow control section, 26...Signal Occurrence part, 27...
・Differential circuit section, 28...switch.

Claims (3)

[Claims] (1) a water flow controller having a drive device; a heat exchanger connected to the water flow controller; a heating device for the heat exchanger, a heating controller for the heating device, a water flow rate detector for detecting water flow rate, a hot water outlet temperature detector, a hot water outlet temperature setting section, a heating control section, a water flow control section, and a signal generation section. - a hot water supply controller consisting of; the heating control unit controls the heating controller based on the i difference between the hot water temperature detector and the hot water temperature detector;
The water flow control unit is a hot water supply control device that controls the driving device based on signals from the signal generation unit that changes the water volume over time and the water flow detector. (2) The hot water supply control device according to claim 1, wherein the hot water supply side controller includes a switch for starting and stopping the operation of the signal generating section. (3) The hot water supply control device according to claim 1, wherein the hot water supply controller sends a signal to the heating control unit via a differential circuit unit that calculates changes in the signal of the water amount detector to control the heating controller.