JP2004353962A - Hot water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user has troublesome operation each time in finishing filling hot water because he should push a reset switch provided on a remote control for resetting operation. <P>SOLUTION: This hot water supply device comprises a heater 3, a heat exchanger 2 to be heated by the heater 3, a water quantity control valve 19 for controlling the quantity of water flowing in a hot water supply passage 10, a tapping temperature detecting means 14 provided on the downstream side of the heat exchanger in the hot water supply passage 10, a hot water filling means 26 for filling hot water with a set quantity of water, a forcible hot water filling stopping means 40 for fully closing the water quantity control valve 19 after finishing filling the hot water to stop filling the hot water, a determining means 30 for opening the water quantity control valve 19 after stopping filling the hot water and determining a change in temperature detected by the tapping temperature detecting means 14, and a forcible water quantity opening means 29 for canceling forcible hot water filling stopping activity. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hot water supply device for supplying hot water to a bathtub, a kitchen, and the like.
[0002]
[Prior art]
In a conventional hot water supply apparatus, there is a hot water supply apparatus in which a set predetermined amount of hot water is filled in a bathtub, and when the filling is completed, the hot water is forcibly stopped. After the hot water supply stops, the user closes the tub in the bathtub to prepare for the next hot water use, and then operates the reset switch provided on the remote control to forcibly stop the hot water supply after the hot water filling is completed. It was a mechanism to cancel the act. In addition, there is also known one in which it is determined that a bathroom curan is left unclosed after filling with hot water (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-197050
[Problems to be solved by the invention]
However, in the above-described conventional hot water supply device, the user must press a reset switch provided on a remote controller or the like after completion of the filling, and perform a reset operation to cancel a forced hot water stopping operation after completion of filling. However, there is a problem that the operation is complicated and the operation is complicated.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a hot-water supply device with a hot-water supply shut-off function capable of eliminating a resetting operation and prompting a user to be warned when closing a bathroom cull. is there.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heater, a heat exchanger heated by the heater, a water amount adjusting valve for adjusting a flow rate of water flowing through the hot water supply path, and a heat exchanger downstream of the hot water supply path. Tapping temperature detecting means provided on the side, filling means for filling the set amount of water, forced filling stop means for stopping the filling by completely closing the water amount adjusting valve after filling, and stopping the filling The water amount adjusting valve is opened later, a judging means for judging a temperature change detected by the tapping water temperature detecting means, and a forced water amount opening means for canceling the forced hot water stopping action are provided.
[0007]
According to the above invention, the user can cancel the forcible stop operation without pressing the reset switch provided on the remote controller or the like every time after filling the hot water. Improvement can be achieved.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 is provided with a heater, a heat exchanger heated by the heater, a water amount adjusting valve for adjusting a flow rate of water flowing through the hot water supply path, and a water flow control valve provided downstream of the heat exchanger in the hot water supply path. Tapping temperature detecting means, filling means for filling a set amount of water, forced filling stop means for stopping the filling by completely closing the water amount adjusting valve after filling is completed, and filling the water amount after stopping filling. The control valve is opened, a judging means for judging a temperature change detected by the tapping water temperature detecting means, and a forced water amount opening means for canceling the forced filling stop action are provided. After the hot water filling is completed, the hot water stopping action can be forcibly canceled without pressing the reset switch provided on the remote controller or the like every time.
[0009]
Further, when the determining means determines that there is a temperature change of a predetermined temperature or more at the time of the opening operation of the water amount adjusting valve after the stoppage of the filling, the forced water filling stop means restarts the water amount adjusting valve. When the user closes the manual tap, such as a bathtub, even if the water amount adjustment valve is opened, there is no water flow in the hot water supply passage of the hot water supply device. Although there is almost no change in the temperature detected by the temperature detecting means, if the user forgets to close the manual tap, water is passed through the hot water supply path of the hot water supply device, and the hot water temperature detecting means detects the change in temperature. Therefore, it can be determined whether or not the user has closed the manual stopper such as the bathtub. If the user forgets to close the manual tap of the bathtub or the like, it is possible to prevent the hot water from overflowing into the bathtub or the like by continuing the hot water stoppage.
[0010]
Further, the invention according to claim 3 is provided with a timer means, and after the hot water is stopped, when the timer time set by the timer means elapses, the water flow regulating valve is opened, and the tap water temperature is detected during the forced opening of the water flow regulating valve. When the temperature change detected by the means is equal to or higher than the predetermined temperature, the operation of closing the water amount adjusting valve is performed again. In addition, it is only necessary to close a manual stopper such as a bathtub, and the usability is improved.
[0011]
Further, the invention according to claim 4 is provided with a counter means for counting the number of closing operations of the water amount adjusting valve performed when the temperature change is equal to or more than a predetermined temperature, and until the counter means counts a predetermined number of times set in advance. , A series of operations of closing the water flow control valve after the filling operation is stopped, opening the water control valve, checking the temperature change after the opening operation, and performing the closing operation of the water flow control valve when the temperature change is equal to or more than a predetermined value are repeated. Even if the user forgets to close the manual tap such as a bathtub after the filling, the closing operation of the water amount adjusting valve is automatically performed until the predetermined number of times is counted. The user only has to close the manual stopper, which further improves the usability.
[0012]
Further, the invention according to claim 5 is provided with a warning means for issuing a warning when the temperature change is determined to be equal to or more than the predetermined temperature change continuously for a predetermined number of times, and forgotten to close a manual plug such as a bathtub. If so, a warning is issued, so that the user can be alerted.
[0013]
According to a sixth aspect of the present invention, there is provided a heater, a heat exchanger heated by the heater, a water amount sensor for detecting an amount of water flowing through the hot water supply path, and a water amount adjusting valve for adjusting the amount of water flowing through the hot water supply path. Tap water temperature detecting means for detecting the hot water temperature in the hot water supply channel, filling means for filling the set amount of water, and forced filling stop means for stopping the filling by completely closing the water amount adjusting valve after filling is completed. Determining means for opening the water amount adjusting valve after stopping the filling, determining a temperature change detected by the tapping temperature detecting means and a water amount signal detected by the water amount sensor, and canceling the forced filling stop operation The forced water amount opening means is provided, and the determination means determines whether to perform the closing operation of the water amount adjustment valve above both the temperature change and the water amount signal. ,the user It can be more accurately determined whether or not the manual stopper such as a bathtub is closed, and if the user forgets to close the manual stopper such as a bathtub, it is ensured that the hot water is stopped and that the bathtub or the like is stopped. The situation where the hot water continues to overflow can be prevented.
[0014]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is an overall configuration diagram of a hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is a control block diagram of the hot water supply apparatus, and FIG. 3 is a flowchart illustrating an operation of the hot water supply apparatus.
[0015]
In FIG. 1, reference numeral 1 denotes a hot water supply device, which includes a heat exchanger 2, a gas burner 3, a blower fan 4, and a main body controller 5 therein. Reference numeral 6 denotes a remote controller having a display unit 7 for remotely operating the hot water supply apparatus 1 and displaying operation information such as hot water temperature and time on a screen, and has a built-in remote controller 8.
[0016]
9 is a water inlet pipe of the heat exchanger 2 and 10 is a hot water pipe from the heat exchanger 2 to the hot water supply curan 22. The water pipe 11, which is composed of the water inlet pipe 9 and the hot water pipe 10 and is connected to the heat exchanger 2, is provided with a water quantity sensor 12 for detecting the flow rate of water in the water pipe and an incoming water temperature sensor 13 for detecting the incoming water temperature from the upstream side. I have. The tapping pipe 10 is provided with a tapping temperature sensor 14 for detecting the temperature of the tapping water heated by the heat exchanger 2. The temperature sensor 14 may detect the temperature of hot water after the hot and cold water is mixed.
[0017]
Reference numeral 15 denotes a gas pipe leading to the gas burner 3. The gas pipe 15 is provided with a gas solenoid valve 16, a gas proportional valve 17, and the like as a driving member for opening and closing a gas passage. Reference numeral 18 denotes an ignition electrode such as an igniter. The main body controller 5 and the remote control controller 8 are connected via a communication interface 20 to determine the state of the hot water supply device main body based on detection signals from the tap water temperature sensor 14, the water amount sensor 12, and various other sensors. The operation of each part (for example, a gas solenoid valve, a gas proportional valve, etc.) of the water heater main body is controlled based on the control signal from the controller. Reference numeral 19 denotes a flow control valve provided in the water pipe for adjusting the water flow, which is driven by a servomotor to adjust the water flow and has a closing function. Reference numeral 21 denotes a bathtub provided in the bathroom, and reference numeral 22 denotes a hot water supply pipe extending from the tapping pipe 10 of the hot water supply device to the bathtub 21, and a bathroom curan 23 is provided at an end thereof.
[0018]
Next, the operation of the water heater configured as described above will be described with reference to the flowchart of FIG.
[0019]
To start hot water filling in the bathtub 21, after turning on the operation switch 31 of the remote controller 6, the desired bathtub full water amount is set by the hot water amount adjusting switch 27, and the desired hot water temperature is set by the hot water temperature setting switch 33. The switch 36 is turned on and the bathroom curan 23 is opened (step S1). At this time, the desired bathtub full water amount set last time is stored in the storage means 39 of the remote controller 8, and if the same setting is sufficient, the operation of the hot water amount adjustment switch 27 or the hot water temperature adjustment switch 33 can be omitted. Then, water is passed through the apparatus, the gas burner 3 is ignited, the blower fan 4 is driven, and the hot water supply combustion is started while the proportional valve 17 adjusts the gas amount so that the desired hot water temperature is obtained (step S2), and the water is supplied to the bathtub. Hot water is started.
[0020]
Then, when the filling of the bathtub 21 proceeds and reaches the water amount set by the user (step S3), the filling of the filling amount of the filling means 26 is stopped, and the water amount is adjusted by the forced filling stop means 40. The valve 19 is fully closed (step S4), and the supply of hot water to the bathtub stops. Before and after this, the end of the hot water filling may be notified by a chime, a melody, a voice, or the like.
[0021]
Next, after a lapse of a predetermined timer time set by the timer means 37 (for example, after one minute) (step S5), the water amount adjusting valve 19 is opened by the forced water amount opening means 29 and the act of stopping the forced hot water filling is released (step S5). Step S6). Thereby, the hot water supply of the set water amount corresponding to the bathtub capacity and the automatic hot water supply stop action are released, and the normal hot water supply operation can be used from the next time. In addition, by forcibly opening the water amount adjusting valve 19, it is possible to determine whether the bathroom curan 23 is open or closed.
[0022]
That is, when the water flow regulating valve 19 is opened (step S6) and the bathroom curan 23 is closed after the completion of hot water filling, no water flow occurs in the hot water supply pipe 22 as shown in FIG. There is no change in the temperature of tapping temperature sensor 14.
[0023]
However, as shown in FIG. 4 (b), when the bathroom curan 23 is open, a water flow is generated in the hot water supply pipe 22, so that the device operates and the detection temperature of the tapping temperature sensor 14 fluctuates to a predetermined value. The difference is equal to or greater than C (step S7). Therefore, by comparing the temperature difference A or B with the predetermined value C, the forgetting to close the bathroom curan 23 can be determined by the determining unit 30.
[0024]
Further, in order to increase the accuracy of the determination of forgetting to close the bathroom curan 23, the water amount sensor 12 can be used together. That is, when the bathroom curan 23 is closed, no water flow occurs in the bath hot water supply pipe 22, so that the water amount sensor 12 is not turned on. However, when the bathroom curan 23 is open, a water flow is generated in the bath water supply pipe 22, and the water amount sensor 12 is turned on (step S8). Thus, the forgetting to close the bathroom curan 23 can be determined by the determining unit 30.
[0025]
Next, if there is a difference between the detected temperature of the tapping water temperature sensor 14 and the predetermined temperature in Step 7 or if the water level sensor 12 is turned on in Step 8, it is determined that the bathroom curan 23 has been forgotten to be closed. (Step 9), the water amount adjustment valve 19 is fully closed again (Step S4), the supply of hot water to the bathtub is stopped, and the operations of Steps 4 to 9 are repeated thereafter.
[0026]
Further, it is compared whether or not the number of times counted by the counter means 38 exceeds a predetermined number (step 10). If the count is exceeded, the warning means 34 informs the user via the warning output means 35 so as to close the bathroom curan 23. A warning may be issued (step 11).
[0027]
The above-described embodiment shows a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope. For example, in the above-described embodiment, the case where the number of remote controllers is one has been described. However, the number of remote controllers used in the present invention may be plural, or a remote controller to which a television receiver is added may be used. Similarly, in the above embodiment, the case where the hot water supply apparatus main body and the remote controller are wireless is illustrated, but it is of course possible to link them with a wired connection. In addition, the hot water supply device using gas as a fuel has been described, but it is a matter of course that a hot water supply device using oil, electricity, or the like as a fuel may be used.
[0028]
【The invention's effect】
As is apparent from the above description, according to the hot water supply device of the present invention, the user can force the hot water stop operation without pressing the reset switch provided on the remote controller or the like every time the hot water is finished after the hot water is finished. Since it can be released, the operability of the water heater can be improved. In addition, if the user has forgotten to close the manual tap such as a bathroom hot water supply, a buzzer or the like warns the user, so that the user can be alerted.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an entire hot water supply apparatus according to an embodiment of the present invention. FIG. 2 is a control block diagram of the hot water supply apparatus. FIG. 3 is a flowchart showing the operation of the hot water supply apparatus. Diagram showing change in tapping temperature after completion [Explanation of reference numerals]
1 hot water supply device 2 heat exchanger 3 burner (heater)
6 Remote controller 12 Water amount sensor 14 Hot water temperature sensor (hot water temperature detecting means)
19 Water amount adjusting valve 26 Filling means 29 Forced water release means 30 Judgment means 34 Warning means 35 Warning output means 36 Filling switch 37 Timer means 38 Counter means 40 Forced filling stop means

Claims (6)

A heater, a heat exchanger heated by the heater, a water amount adjusting valve for adjusting a flow rate of water flowing through the hot water supply path, and a tap water temperature detecting means provided downstream of the heat exchanger in the hot water supply path; Water filling means for filling the discharged water amount, forced water filling stop means for stopping the filling by completely closing the water amount adjusting valve after completion of the filling, and opening the water amount adjusting valve after stopping the filling, A hot water supply apparatus comprising: a determination unit that determines a temperature change detected by a temperature detection unit; and a forced water amount release unit that cancels the forced hot water suspension action. If the determining means determines that there is a temperature change equal to or higher than the predetermined temperature during the opening operation of the water amount adjusting valve after the stop of the filling, the forced filling stop means closes the water amount adjusting valve again. The hot water supply device according to claim 1, wherein A timer means is provided, and after the stoppage of the hot water supply, when the timer time set by the timer means elapses, the water amount regulating valve is opened, and the temperature change detected by the tap water temperature detecting means during the forced opening of the water amount regulating valve is a predetermined temperature. 3. The hot water supply apparatus according to claim 1, wherein the water amount adjusting valve is closed again in the above case. Counter means for counting the number of closing operations of the water amount adjusting valve performed when the temperature change is equal to or higher than a predetermined temperature is provided, and until the counter means counts a predetermined number of times set beforehand, the water amount adjusting valve after the stop of the filling is provided. A series of operations from a closing operation to an opening operation, a confirmation of a temperature change after the opening operation, and a closing operation of the water amount adjusting valve when the temperature change is equal to or more than a predetermined value, are repeated. The water heater according to any one of claims 1 to 3. The hot water supply apparatus according to claim 4, further comprising a warning unit that issues a warning when the temperature change is determined to be equal to or greater than the predetermined value continuously for a predetermined number of times. A heater, a heat exchanger heated by the heater, a water amount sensor for detecting an amount of water flowing through the hot water supply channel, a water amount adjusting valve for adjusting an amount of water flowing through the hot water supply channel, and a tap water for detecting a hot water temperature of the hot water supply channel. Temperature detection means, filling means for filling the set amount of water, forced filling stop means for stopping the filling by completely closing the water amount adjusting valve after filling, and the water amount adjusting valve after stopping the filling. And a determination means for determining a temperature change detected by the tapping temperature detection means and a water amount signal detected by the water amount sensor, and a forced water amount opening means for canceling the forced hot water stopping action. The water heater is characterized in that the means determines whether or not to perform the closing operation of the water amount regulating valve above both the temperature change and the water amount signal.

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