JPH0415018A - Residual hot water filling method for bath unit - Google Patents

Abstract

PURPOSE:To restrain wasteful power consumption and to utilize residual hot water in a wide range so as to improve the convenience in use by operating a forced circulation means of a hot water supply device during a short fixed time, and then operating the forced circulation means while supervising the flowing condition of residual hot water. CONSTITUTION:A circulation pump 14 is first operated during a short fixed time, for example, two seconds. Subsequently, a control portion 17 supervises the flowing condition of residual hot water. That is, according to a detection signal from a water flowing switch 15, it is judged whether it is in the flowing condition or not. When the residual hot water is in the flowing condition, the circulation pump 14 is operated until the water flowing stop condition. When flowing is not detected, the control portion 17 stops the circulation pump 14 during a fixed time, for example, during 15 seconds, restarts the pump and supervises the flowing condition of the residual hot water. The control portion 17 executes the above procedure repeatedly during the time long enough, as compared with the stop time, for example, during 20 minutes. After the lapse of 20 minutes, the control portion 17 outputs a command for cancelling the procedure of pouring hot water to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for pouring remaining hot water into a bathtub device, in which the remaining hot water in a bathtub is supplied to a washing machine or the like.

(Prior Art) Remaining hot water in bathtubs has traditionally been used for cleaning and laundry.

Recently, as a means of supplying remaining hot water to a washing machine for use in washing, a fully automatic bath system has been equipped with a washing machine equipped with a water injection device. It looks like this.

In such a device, a supply pipe is branched and connected to a hot water circulation pipe connecting a water heater and a bathtub via a switching valve, and the remaining hot water is poured into a washing machine. In other words, switch the switching valve to the washing machine side.

The remaining hot water is injected into the water heater's circulation pump. In this case, the faucet provided at the tip of the supply pipe facing the washing machine may be equipped with a timer or manually opened/closed.

In the case of a faucet with a timer, the faucet is closed when the set water injection time has elapsed, and in the case of a manual open/close type faucet, it is closed manually. However, in the first case, the circulation pump is stopped when the set water injection time has elapsed, and in the latter case, after a certain period of time has passed after the circulation of hot water is no longer detected by the flowing water detection means provided in the hot water circulation path, the circulation pump is stopped. The switching valve is switched to the bathtub side.

(Problems to be Solved by the Invention) However, in the above-described device, when the remaining hot water is used for rinsing during washing, it is necessary to set the water injection time to be long. In the case of a water faucet with a timer, the circulation pump continues to operate, that is, idle, even when hot water is not flowing during the set water injection time, which shortens the life of the pump and wastes power. On the other hand, in the case of a manual faucet, the circulation pump continues to run idly from the washing operation to the rinsing operation after the water injection is completed and the faucet is manually closed. This will lead to waste.

The present invention has been made in view of this problem.

(Means for Solving the Problems) In order to solve the above problems, the method of the present invention provides a bath apparatus equipped with a water heater that circulates hot water in a bathtub using forced circulation means. After operating the means for a certain period of time, the flow state of the remaining hot water in the bathtub is monitored,
If running water is detected, the operation of the forced circulation means described in tiiJ is continued; if running water is not detected, the forced circulation means is stopped, and after a predetermined period of time, the forced circulation means described in Ajj is operated for a certain short time. Repeat the procedure for monitoring the flowing state of the remaining hot water in the bathtub, and after a sufficiently long period of time has elapsed compared to the stop time of the forced circulation means after the remaining hot water is no longer detected as described in 11j, the remaining hot water is drained. The procedure for pouring water outside is canceled.

In addition, the method of the present invention provides a bath apparatus equipped with a water heater that circulates hot water in a bathtub using a forced circulation means. The state of flowing hot water is monitored, and if running water is detected, the operation of the forced circulation means is continued; if running water is not detected, the forced circulation means is stopped, and the forced circulation means is turned off after a predetermined period of time has elapsed. The procedure of monitoring the running water of the remaining hot water in the bathtub by operating it for a certain period of time is repeatedly executed, and after the running water of the remaining hot water is no longer detected, 0
After a sufficiently long time has elapsed compared to the stop time of the forced υ^ ring means in Part 1, the procedure for pouring the remaining hot water into Part 4 is canceled by a release operation.

(Function) After operating the forced circulation means for a certain period of time, monitor the flowing state of the remaining hot water, and when the remaining hot water is in a flowing state, operate the forced circulation means until the water stops flowing. Activate. If no running water is detected, the forced wi
The system is stopped and restarted after a predetermined period of time, and the remaining hot water is monitored. After this procedure is repeated and a sufficiently long time has elapsed since the remaining hot water is no longer in a flowing state, compared to the stop time of the forced ring opening means described in 01j,
The procedure for pouring remaining hot water outside is canceled. Note that the procedure for pouring the remaining hot water outside can also be ended by a manual release operation.

(Embodiment) Next, an embodiment of a bath apparatus for carrying out the method for pouring remaining hot water into a bath apparatus according to the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates a bath device equipped with a means for washing remaining hot water, and this bath device 1 includes a water heater 2 and a bathtub 3.
The hot water circulation vibrator 4 is used to communicate with the hot water circulating vibrator 4.

The hot water circulation vibe 4 is composed of an outgoing pipe 5 which is a flow path for supplying hot water from the water heater 2 to the bathtub 3, and a return pipe 6 which is a flow path for refluxing hot water from the bathtub. A hot water supply pipe 9 for supplying hot water to the washing machine 8 is branch-connected via the first switching valve 7 .

The water heater 2 includes a hot water supply heat exchanger 10 and a reheating heat exchanger 1.
1. The hot water supply heat exchanger IO and the forced heating heat exchanger 11 are connected to each other via a flow path cutoff valve 12 and a second switching valve 13. The return TFF6 is connected to the second switching valve 13 via forced hot water circulation means, that is, a circulation pump 14, and the outgoing pipe 5 is connected to the hot water outlet side of the forced-firing heat exchanger 11 via a water switch 15. is connected.

Furthermore, a water level sensor 16 is disposed within the bathtub 3 to detect the level of hot water in the bathtub.

A bath bag fl! The component 1 performs control operations based on control commands from the control section 17. Further, this control section 17
Based on the detection signals from the water flow switch 15 and the water level sensor 16, the controller issues corresponding control commands. The control unit 17 is provided with an operation switch (not shown) for water injection operation. Furthermore, the control unit 17 can select operations such as "filling remaining hot water", "filling remaining hot water additionally", and pouring hot water into the E men's bath by using the operation switch. In addition, by operating the operation switch, the first switching valve 7 and the second switching valve 3 are switched, and the hot water flow path for supplying the hot water in the bathtub 3 to the washing machine 8 and the hot water supply A hot water flow path for supplying hot water from the washing machine 2 to the washing machine 8 is configured to be switched.

Next, a description will be given of a bath device 1 equipped with such a residual hot water washing means and a method of pouring the residual hot water therein.

When a command to start the remaining hot water injection J is given to the control unit I7 by the operation switch, the control unit 17 switches the first switching valve 7,
A control command is output to the second switching valve I3, the first switching valve 7 is switched so that hot water is supplied to the washing machine 8, and the second switching valve 3 is switched to supply hot water from the hot water circulation vibrator 4 to the washing machine 8. Exchanger 1
1 to form a hot water flow path. In addition, the control unit 1
A start command is output from 7 to the circulation pump 14, and the circulation pump I4 is started.

Here, as shown in FIG. 2, the w1 ring pump 14 is first operated for a certain period of time (for example, 2 seconds). Next, the control unit I7 monitors the running state of the remaining hot water. That is, based on the detection signal from the water flow switch 15, it is determined whether or not water is flowing. When the remaining hot water is in a flowing state, the circulation pump 14 in 611 is operated until the running water is stopped. If running water is not detected, the control unit 1
Step 7 stops the circulation pump 14 for a predetermined period of time (for example, 15 seconds), restarts it, and monitors the flowing state of the remaining hot water. The control unit 17 performs this procedure on the circulation pump 14.
The process is repeatedly executed for a sufficiently long time (for example, 20 minutes) compared to the stop time of . After 20 minutes have elapsed, the control unit 17 outputs a command to cancel the procedure for pouring the remaining hot water outside.

In this way, hot water is transferred from the bathtub 3 to the return pipe 6, to the circulation pump 14, and to the second switching valve 13 by the action of the circulation pump 14.
, the first combustion heat exchanger 11, and the water flow switch
The hot water reaches the switching valve 7 and is supplied to the washing machine 8 via the hot water supply pipe 9.

Note that the procedure for pouring the remaining hot water outside can also be ended by a manual release operation. That is,
As shown in FIG. 3, when the control 61m11 is manually operated to cancel the procedure of pouring the remaining hot water to the outside, the control section 17 causes a hot water flow path to be formed on the bathtub 3 side. A switching command is issued to the first switching valve 7. that time,
If the circulation pump I4 is in operation, the control unit 17:
When a stop command is issued to the circulation pump 14 and the circulation pump 14 is in a stopped state, this procedure is completed.

(Effects of the Invention) As described above, according to the present invention, after operating the forced circulation means of the water heater for a certain period of time, the flowing state of the remaining hot water is monitored, and if the remaining hot water is in the flowing state, the forced circulation means If the means continues to operate and no running water is detected, the procedure of stopping the forced circulation means for a predetermined period of time and then operating it for a certain period of time to monitor the flowing state of the remaining hot water is repeated, and the remaining hot water is in a flowing state. The procedure for pouring the remaining hot water outside is canceled after a sufficiently long time has elapsed compared to the time required to stop the forced circulation means after the hot water is no longer present.
There is no need to operate forced circulation means until rinsing during washing, reducing unnecessary power consumption.
Shortening of the life of the forced circulation means can be prevented.

In this way, according to this method of pouring the remaining hot water, the remaining hot water can be used not only for washing but also for rinsing in a wide range of applications, and the usability is greatly improved.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing one embodiment of a bath device for carrying out the method for pouring remaining hot water into a bath device according to the present invention, and FIG.
・, Fig. 3 is a flowchart showing how to cancel the injection of remaining hot water. 1... Bath equipment, 2... Water heater, 3... Bathtub, 4...
... Hot water circulation pipe, 5... Outgoing pipe, 6... Return pipe, 7
... First switching valve, 8 ... Washing machine, 9 ... Hot water supply pipe, 1O ... Heat exchanger for hot water supply, 11 ... Heat exchanger for forced heating, 12 ... Flow path cutoff Valve, 13...Second switching valve, 1
4...Circulation pump, 15...Water switch, 16.
...Water level sensor, 17...Control unit 1. Knee” *il! 1 j12 figure

Claims (2)

[Claims] (1) In a bath device equipped with a water heater that circulates hot water in a bathtub using a forced circulation means, the flow state of the remaining hot water in the bathtub is monitored after the forced circulation means is operated for a certain period of time. , if running water is detected, the operation of the forced circulation means is continued; if running water is not detected,
Repeating the procedure of stopping the forced circulation means and activating the forced circulation means for a certain period of time after a predetermined period of time has elapsed to monitor the flowing state of the remaining hot water in the bathtub, and after the remaining hot water is no longer detected. . A method for pouring remaining hot water into a bath device, characterized in that the procedure for pouring the remaining hot water to the outside is canceled after a sufficiently long time has elapsed compared to the stop time of the forced circulation means. (2) In a bath device equipped with a water heater that circulates hot water in a bathtub using forced circulation means, the flow state of the remaining hot water in the bathtub is monitored after the forced circulation means is operated for a certain period of time. , if running water is detected, the operation of the forced circulation means is continued; if running water is not detected,
Repeating the procedure of stopping the forced circulation means and activating the forced circulation means for a certain period of time after a predetermined period of time has elapsed to monitor the flowing state of the remaining hot water in the bathtub, and after the remaining hot water is no longer detected. A method for pouring remaining hot water into a bath device, characterized in that the procedure for pouring the remaining hot water to the outside is canceled by a release operation after a sufficiently long time compared to the stop time of the forced circulation means.