JPS59150246A - Hot-water supplying apparatus - Google Patents

Abstract

PURPOSE:To stop the fluctuation in the amount of water of a hot-water supplying apparatus automatically, by driving a water-amount adjusting valve with change time-wise being provided, and using a timer circuit which supplies said driving signal only at a preset time. CONSTITUTION:When a switch 19 is changed to 19a, a signal is sent from a signal generator 17 only at a time preset by a timer circuit 18 in advance. The signal is transmitted to a motor driving circuit 15, and a water-amount adjusting valve 10 is rotated in the forward or reverse direction. The opening degree of a valve hole 10a is changed by the rotation of the water-amount adjusting valve 10. The differential pressure at the valve hole 10a actuates a diaphragm and drives a control valve 4. Thus the amount of water is changed. The signal is changed from time to time. When the fluctuation in the amount of water is made to occur only during the time preset by the timer circuit 18, the change in the amount of water is automatically stopped, and the normal hot water supply with the constant amount of water is regained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater such as a gas water heater, and more particularly to a control configuration of a water flow control valve that changes the water flow over time.

2. Description of the Related Art Conventional Structure and Problems There are already known methods for detecting the temperature of hot water and adjusting the amount of gas and water in the field of water heaters.

As shown in Fig. 1, it has a burner A, a fuel control valve B, and a heat exchanger C, and includes a temperature sensor that detects the hot water temperature and a comparator that compares the output of the temperature setting device, and this comparator E. The control valve F and the fuel control valve B of the flow passage are controlled according to the output of the flow channel.

In this conventional example, the amount of water is constant during normal operation, and the amount of water is not changed over time.

OBJECTS OF THE INVENTION The present invention allows the amount of water to be varied over time when using a water heater, and provides a pine surge effect, particularly when using a shower. The purpose of this invention is to automatically stop the operation of temporally changing the amount of water (hereinafter referred to as water amount fluctuation operation) after a time set by a timer circuit has elapsed.

Structure of the Invention To achieve this object, the present invention provides a timer circuit in order to stop the water flow fluctuation operation after a certain period of time, and automatically transmits a signal from a signal generator to the drive unit when the timer setting time has elapsed. The system is configured to stop at

With this configuration, when the water heater is used in a water flow fluctuation operation, the water flow fluctuation operation can be automatically stopped when the timer setting time, which is the time desired by the user, comes.

DESCRIPTION OF THE EMBODIMENTS A case in which an embodiment of the present invention is applied to a gas water heater will be described with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 1 denotes a water flow controller, and water enters a valve chamber 3 from an inflow path 2, passes through a gap between a control valve 4 and a control hole 6, and flows into a primary chamber 6. Reference numeral 7 designates a diaphragm that operates together with the control valve 4, and the other side forms a secondary chamber.The secondary chamber 8 has a control spring 9 that biases it toward the primary chamber 6.

The water flowing into the primary chamber 6 flows through the valve hole 10 of the water flow control valve 1o.
From a, the hot water is supplied to the heat exchanger 11 and heated, and the hot water is discharged from the outlet pipe 12.
supplied to The downstream side of the water flow control valve 10 is led to the secondary chamber 8 through a communication hole 13 . The water flow control valve 10 is connected to a gear 14
and a motor 15. As the water flow control valve 10 rotates, the position of the valve hole 1 Oa changes 9, and the relationship between the differential pressure and the amount of water passing through the valve hole IOA changes, and the differential pressure acts on the diamond 7 ram 7 and controls the control valve 4. Drive. Reference numeral 17 denotes a signal generator, which drives the drive device 16 with its signal.

A timer circuit 18 stops sending the signal from the signal generator 17 to the drive device 16 when a set time has elapsed, thereby stopping the water amount fluctuation operation.

19 is a selector switch of the signal generator 17, and when the fluctuation operation is used continuously, 19a is used continuously, when the timer is used, 19b is used, and when switched to 19c, normal hot water supply with a fixed amount of water can be selected. ing.

On the other hand, the gas passes through the gas amount adjusting device 21 from the gas supply path 20 and is combusted at the heating station 22 to heat the heat exchanger 11.

Next, the operation will be explained. In FIG. 2, when the water flow starts, the water that flows into the water flow controller 1 passes through the water flow control valve 10, flows into the bag exchanger 11, is heated, and is supplied to the outside from the hot water outlet pipe 12. . As the water flows, a flow switch (not shown) is activated, the heating device 21 starts to burn, and the temperature of the water rises.

After that, switch 19 is turned on manually or automatically.
When switched to a, a signal is sent from the signal generator 17 only for a preset time by the timer circuit 18, and is transmitted to the drive motor 16, causing the water flow regulating valve 10 to rotate normally or
Reverse it. The valve hole 10a is opened by rotating the water flow control valve 10.
The restriction of the valve changes, and the differential pressure across the valve hole 10a acts on the diaphragm 7 to drive the -C1 control valve 4, thereby changing the amount of water. The amount of water changes every moment depending on the signal sent by the signal generator 17.

Figure 2 shows the temporal changes in water volume. Since the amount of water changes from moment to moment, when used in the shower it provides a pleasant stimulation and has a pine surge effect.

The degree of change in the amount of water is set in advance by the signal generator 17 so that it is within a predetermined amount of water depending on the heating capacity of the heating device 22 and the heat capacity of the heat exchanger. Further, the set value of the signal generator 17 can be varied so that the user can adjust the predetermined water amount range according to his/her preference.

When the water amount fluctuation operation is performed only for the time set by the timer circuit 18, the water amount change automatically stops and normal hot water supply with a constant water amount is resumed.

The user can adjust the set time of this timer circuit to any time according to his/her preference.

1. Using a switch, the user can choose to have the water fluctuate continuously, only for a set time on a timer, or use a regular water supply with a fixed amount of water.

Effects of the Invention As described above, the present invention automatically stops the water flow fluctuation operation after a certain period of time using a timer circuit, so that the pine surge effect can be applied only for an appropriate time by the fluctuation operation when using the shower. You can have a comfortable shower.

In addition, the user can conveniently use the selector switch to select between continuous water flow operation, constant water flow, and regular hot water supply.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional water heater, FIG. 2 is a block diagram of an embodiment of the water heater of the present invention, and FIG. 3 is a characteristic diagram showing changes in the amount of water in the water heater. 1...Water flow control, 1Q...Water flow control valve,
11... Heat exchanger, 16... Drive device, 17
... Signal generator, 18 ... Timer circuit,
19...... Selector switch, 22...... Heating device. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Time □

Claims (3)

[Claims] (1) a heat exchanger, a heating device that heats the heat exchanger, a water flow controller having a water flow control valve that varies the flow of water through the heat exchanger, and a drive device that drives the water flow control valve;
A water heater comprising: a signal generator that sends a signal to the drive device to change the amount of water flowing over time; and a timer circuit that supplies the signal from the signal generator to the drive device only for a set time. (2) The water heater according to claim 1, wherein the timer circuit is configured to change the set time. (3) Continuous signal generator operation, timer operation, and stop.”
Claim 1 having a changeover switch for switching between two modes.
Water heater as described in section.