JPS60245948A - Hot-water supply control device - Google Patents

Abstract

PURPOSE:To permit to stop supply of hot-water with a predetermined amount at all times by a method wherein a hot-water supplying time operating unit is controlled so as to operate based on a flow amount per initial unit time after putting a switch ON. CONSTITUTION:In case the predetermined amount of hot-water is supplied, the flow amount (f) per unit time after opening a specified counter to start the supply of hot-water is operated in a flow amount operating unit 13, a stop deciding unit 16 detects that the measuring time T of a timer 15 starting after the beginning of the supply of hot-water has become longer than a hot-water supplying time Ta and outputs a stop signal while the hot-water supply control means is driven by the stop signal to stop the supply of hot-water. Accordingly, the supply of hot-water is stopped automatically when the integrated amount of hot-water supplied through a specified cock has arrived at the predetermined amount while the stop of supply may be effected regardless of the opening and closing of the other cock under supplying hot-water.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water supply control device that automatically stops hot water supply when a predetermined amount of hot water has been supplied.

Conventional Structure and Problems There is a conventional device of this kind, for example, as shown in FIG. 1, which automatically stops supplying hot water after a certain amount of hot water is supplied to the bathtub. In Figure 1, water Wi is heated in water heater body 1 and hot water W
h. A flow rate sensor 2 is provided in the water supply line to transmit a flow rate signal according to the amount of hot water supplied. The controller 3 is
Based on this flow rate signal, it is determined whether or not to stop, and a stop signal is output when stopping is determined. The electromagnetic valve serving as the hot water supply stop means stops the hot water supply in response to this stop signal. Numbers 5 and 6°7 are clicks, and especially clicks 7 are for hot water supply in the bathtub 8. Controller a is constructed as shown in FIG. That is, based on the flow rate signal from the flow rate sensor 2, the cumulative flow rate integrating section 9 calculates and outputs the cumulative flow rate Q. The determination unit 10 compares this integrated flow rate Q with the set integrated flow rate Qs, and when Q≧Qs, it determines that a predetermined flow rate has been poured into the bathtub and outputs a stop signal. 11 is an on/off switch of controller a. With the above configuration, when the column 7 is opened and hot water supply to the bathtub 8 is started, and the switch 11 is turned on, the controller 3 starts operating. The integrated flow rate calculation unit 9 starts calculation, and when the integrated flow rate Q becomes equal to or higher than the set integrated flow rate Qs, the determination unit 10 outputs a stop signal, and in response, the solenoid valve 4 closes and hot water supply is automatically stopped. do. The set cumulative flow rate QB is
It is usually adjustable by the user by suitable means such as a variable resistor.

Naturally, in such a device, while the collar 7 is open and the controller 3 is operating, the other collars 5 and 6 are expected to be closed.

This is because once the ring 5 or 6 is opened, the flow rate signal detected by the flow sensor 2 will be the sum of the flow rate F7 flowing out from the ring 7 and the flow Fx flowing out from the ring 5 or 6. This is because the controller 3 outputs a stop signal before the predetermined amount ΩB is dropped, the solenoid valve 4 is activated, and hot water supply is stopped. Therefore, this device has a drawback in that opening and closing of bells other than the intended bell 7, such as bells 5 and 6, affects the amount dropped into the bathtub 8.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and provides a hot water supply system that automatically stops hot water supply when the cumulative amount of hot water supplied from a specific tap reaches a predetermined amount regardless of whether other taps are opened or closed. The purpose is to obtain a control device.

Structure of the Invention In order to achieve the above object, the hot water supply control device of the present invention changes the open state of the bell when dispensing a predetermined amount of hot water, such as when pouring hot water into a bathtub. Since hot water is left as it is without changing the amount, the flow rate f per unit time after opening that specific door and starting hot water supply is calculated by considering the fact that hot water is supplied from that door at an almost constant rate. Calculated by the flow rate calculation section,
The hot water supply time calculation section calculates the time T8 required for hot water supply from this flow rate f and the set cumulative flow rate Q11, and the stop determination section determines that the time T8 measured by the timer that starts from the start of hot water supply has exceeded the hot water supply time Ts. is detected and outputs a stop signal, and this stop signal drives the hot water supply control means to stop the hot water supply.When the cumulative amount of hot water supplied from a specific tap reaches a predetermined amount, the hot water supply can be automatically stopped. Also, if this can be done regardless of the opening/closing of other doors during hot water supply, it will have a great effect.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, the same numbers as in FIG. 2 indicate the same items. The controller 12 is configured as follows. The flow rate calculation unit 13 is
It receives the flow rate signal from the flow rate sensor 2, calculates the flow rate f per unit time, and outputs the result. The hot water supply time calculation unit 14
The required hot water supply time Ts is calculated from the flow rate f from the flow rate calculation unit 13 and the set cumulative flow rate Q8, and is output. Elapsed time T from timer 15 and hot water supply time Ts from hot water supply time calculation unit 14
The stop determination unit 16 compares the two and outputs a stop signal if the condition T≧Ts is satisfied.

The operation of the above configuration will be explained below.

When the user opens the collar 7 and starts supplying hot water to the bathtub 8, and at the same time turns on the switch 11, the controller 12 starts operating. The flow rate calculation unit 13 calculates the flow rate f per unit time based on the flow rate signal from the flow rate sensor 2. For example, if the flow rate sensor 2 is of a type that transmits 1° pulse as a flow rate signal each time it measures a unit volume, the flow rate calculation section & Calculate the flow rate. The hot water supply time calculation unit 14 calculates the hot water supply time Ts using the following formula from the flow rate f per unit time and the set cumulative flow rate Q8.

'rs=os/+ The hot water supply time Ts calculated here is latched, and even if the flow rate changes after that and the flow rate per unit time calculated by the flow rate calculation unit 13 changes, the hot water supply time calculation unit 14 initially The calculated hot water supply time TII is held and the output is maintained. The timer 16 starts measuring time when the switch 11 is turned on, and measures the elapsed time after the switch 11 is turned on, that is, the hot water supply time T.
Output. The stop determination section 16 outputs a stop signal when the elapsed time T force f from the timer 11 reaches the hot water supply time 78 or more from the hot water supply time calculation section 14. The electromagnetic valve 3 stops supplying hot water in response to this stop signal, and the supply of hot water from the collar 7 to the bathtub 8 is stopped.

According to this embodiment, the hot water supply time Ts is determined based on the flow rate f per unit time calculated first after the switch 11 is turned on, and when the elapsed time exceeds the hot water supply time Ts, a stop signal is issued. When the controller 12 is in operation, even if a door other than the intended one is opened or closed, regardless of this opening or closing,
It will automatically stop when the amount of hot water supplied from the target pot reaches a predetermined amount. For example, when supplying hot water to a bathtub, etc., it will automatically stop when the desired amount is poured without depending on the opening and closing of other pots. This eliminates the disadvantages seen in the conventional example.

In the above-mentioned embodiment, the hot water supply time calculation section 14 calculates the water supply time based on the first flow fif per unit time after the switch 11 is turned on. The per unit flow rate fz or the n-th flow rate fn may be used, or multiple times fi
The hot water supply time may be calculated based on the average of the average values.

Further, although the flow rate sensor and the hot water supply control means (electromagnetic valve) are provided in the water supply line, it goes without saying that they may also be provided in the hot water supply line; for example, in a storage type water heater, it may be better to provide them in the hot water supply line.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) Hot water supply can be automatically stopped when the cumulative amount of hot water supplied from a specific pot reaches a predetermined amount.

(2) Hot water supply can be automatically stopped when the predetermined amount of hot water is supplied from a specific door, regardless of whether the other door is opened or closed, and the hot water supply can always be stopped at the predetermined amount without depending on the opening or closing of other doors. .

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional hot water supply control device, FIG. 2 is a block diagram showing the configuration of the controller, and FIG. 3 is a block diagram of a hot water supply control device that is an embodiment of the present invention. 2-...Flow rate sensor, 4...Hot water supply stop means (electromagnetic valve), 12...Controller, 13...Flow rate calculation unit, 15...Timer, 16... ...Stop judgment section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] A flow rate sensor that transmits a flow rate signal according to the amount of hot water supplied, a controller that outputs a stop signal based on the flow rate signal from the flow rate sensor, and a hot water supply stop means that is driven by the stop signal and stops hot water supply, The controller includes a flow rate calculation unit that calculates a flow rate per unit time in response to the flow rate signal, a hot water supply time calculation unit that calculates hot water supply time from the flow rate calculated by the flow rate calculation unit and a set integrated flow rate, and a timer. and a stop determination unit that outputs a stop signal when the time measured by the timer is equal to or longer than the hot water supply time.