JP2000314553A - Water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To directly display heat insulation end time, without requiring calculation of the end time by knowing a present time by providing a display unit for displaying the end time in a water heater having a water heater body and one or a plurality of remote controllers, to automatically heat insulate a hot water temperature in a bathtub. SOLUTION: A remote controller is connected to a controller so as to be remotely operated, stored and set prescribed data in a memory connected to the controller. The remote controller has an operation switch 35, a temperature set switch 39 for setting a set temperature of hot water supplied fro a hot water supply cock and a bath set temperature of the hot water to be filled in a bathtub, a hot water filling switch 36 for turning on when bathtub water is reheated, and a display unit 37 for displaying the set temperature, the bath set temperature or the like. The unit 37 displays heat insulation end time. Here, when the switch 36 is depressed, hot water is filled automatically in the bathtub through reheating piping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater comprising a water heater main body and one or more remote controllers, and having a function of automatically keeping the temperature of hot water in a bathtub.

[0002]

2. Description of the Related Art Conventionally, as seen in JP-A-9-14749,
In a hot water supply device that is composed of a water heater main body and one or a plurality of remote controllers and has a function of automatically keeping the temperature of hot water in a bathtub, the remaining time until the end of keeping the temperature is displayed.

[0003]

However, the above-described method of displaying a hot water supply apparatus has a problem of inconvenience that the current time must be known and added to the remaining time in order to know the heat retention end time. there were.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a hot water supply apparatus which displays a warming end time directly without knowing a current time and calculating an end time. It is in.

[0005]

Means for Solving the Problems and the Effect of Its Action To achieve the above object, a first aspect of the present invention comprises a water heater main body and one or more remote controllers, and automatically controls the temperature of hot water in a bathtub. Since the hot water supply device having the function of keeping the temperature is provided with the display unit for displaying the heat retention end time, it is possible to know the current time and directly know the heat retention end time without the hassle of calculating the end time.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of a gas water heater showing one embodiment of the present invention. As shown, the gas water heater includes a water heater main body 1, a water supply pipe 3 for supplying water from the water supply source to the water heater main body 1, and a water heater main body 1.
The burner 13 is burned in the inside, and is constituted by a hot water supply pipe 5 for supplying water heated by the heat exchanger 7 to the hot water tap 11. In addition, the water supply pipe 3 has an incoming water temperature sensor 25 for detecting the temperature Tc of water from the water supply source, a water amount sensor 27 for detecting the amount of water Q, and a water supply pipe upstream of the mixing valve 41 of the water supply pipe 5. A heat exchanger outlet temperature sensor 45 for detecting the temperature Th at the outlet of the heat exchanger 7, and a mixed hot water temperature detection sensor 2 for detecting a mixed hot water temperature Tm after the mixing, downstream of the mixing valve 41.
9 are provided. Further, the gas water heater includes a hot-water pipe 4 connected from the hot-water pipe 5 in the hot-water heater main body 1 to the additional heating pipe 2 downstream of the mixing valve 41. A bath water amount sensor 8 for detecting a flow rate flowing through the pipe 4 and a hot water solenoid valve 6 for starting / stopping the supply of hot water are provided. The reheating pipe 2 has an end connected to the bathtub 12, a circulation pump P for circulating hot water in the bathtub 12, a water level sensor 10 for detecting a water level in the bathtub 12, and a temperature of hot water in the bathtub 12. A bath temperature sensor 49 is provided.

FIG. 2 is a control block diagram showing one embodiment of the present invention. As shown in FIG. 2, various sensors, an incoming water temperature sensor 25, a water amount sensor 27, a heat exchanger outlet temperature sensor 45, a mixed hot water temperature detection sensor 29, a bath water amount sensor 8,
Bath temperature sensor 49, water level sensor 10, and proportional valve 1
9, the solenoid valve 21, the fan 9, the mixing valve 41, the hot water solenoid valve 6, the circulation pump P, and the like are connected to the control unit 31,
A predetermined detection value is sent to the control unit 31 or the control unit 31
And can be controlled by instructions from In addition, the control unit 31 can be remotely operated,
A remote controller 33 is connected to the control unit 31 so that predetermined data can be stored and set in the storage unit 50 connected to the control unit 1.

FIG. 3 is a plan view of a remote controller showing one embodiment. The remote control 33 has an operation switch 35 and a hot water tap 1
A temperature setting switch 39 for setting a set temperature Ts of the hot water supplied from 1 and a bath set temperature Tfs of the hot water to be filled in the bathtub 12, a hot water switch 36 which is turned on when filling the bathtub, and a bathtub The apparatus further includes a reheating switch 38 that is turned on when reheating the hot water in 12, a display unit 37 that displays a set temperature Ts, a bath set temperature Tfs, and the like. The display unit 37 displays the heat retention end time.

FIG. 4 is a flowchart illustrating the present invention. In step S1, a heat retention time is set in advance. When the hot water switch 36 is pressed, hot water is automatically applied to the bathtub through the additional heating pipe. After the set amount of hot water is filled in step S2, additional heating is performed until the temperature reaches the set temperature in step S3. It is confirmed in step S5 whether or not the water level has reached the set value in step S4. At this time, if the water level does not reach the set value, additional hot water filling is performed in step S7, and the process returns to step S5 again to check the water level. If the set water level has been reached, additional heating is performed in step S6 until the set bath water temperature is reached. When the set temperature is reached, the buzzer sounds and the bathing is notified. In step S8, the circulation pump P is periodically operated, and if the bath water temperature is lower than the set value, the reheating operation is performed. If the water level is lower than the set value in S9, a water level recovery operation is performed.

If the heat retention time has not expired in step S10, the heat retention end time is set in step S11 by the remote controller 33.
Is displayed on the display unit 37. When the heat retention time ends, the heat retention end time is turned off in step S12, and the heat retention switch is turned off in step S13. Thus, the user knows that the heat retention has ended.

[Brief description of the drawings]

FIG. 1 is a block diagram of a gas water heater showing one embodiment of the present invention.

FIG. 2 is a control block diagram showing one embodiment of the present invention.

FIG. 3 is a plan view of a remote controller showing one embodiment of the present invention.

FIG. 4 is a flowchart showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Water heater main body 31 ... Control part 2 ... Additional heating piping 33 ... Remote control 3 ... Water supply pipe 35 ... Operation switch 4 ... Hot water pipe 36 ... Hot water Switch 5 ・ ・ ・ Hot water supply pipe 37 ・ ・ ・ Display section 6 ・ ・ ・ Hot water solenoid valve 38 ・ ・ ・ Additional heating switch 7 ・ ・ ・ Heat exchanger 39 ・ ・ ・ Temperature setting switch 8 ・ ・ ・ Bath water sensor 41 ・..Mixing valve 9 ... Fan 45 ... Heat exchanger outlet temperature sensor 10 ... Water level sensor 49 ... Bath temperature sensor 11 ... Hot water tap 50 ... Storage unit 12 ... Bath tub P ... circulation pump 13 ... burner 19 ... proportional valve 21 ... solenoid valve 25 ... water temperature sensor 27 ... water quantity sensor 29 ... mixed hot water temperature detection sensor 31 ... control unit 33 Remote control 35 Operation switch 36 H 37 display unit 38 reheating switch 39 temperature setting switch 41 mixing valve 45 heat exchanger outlet temperature sensor 49 bath temperature sensor 50 storage unit P ・ ・ ・ Circulation pump

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Claims (1)

[Claims] 1. A water heater comprising a water heater main body and one or a plurality of remote controllers and having a function of automatically keeping the temperature of hot water in a bath tub, further comprising a display unit for displaying a heat retention end time. Water heater.