JPH04158120A - Automatic hot water supply system - Google Patents

Abstract

PURPOSE:To give an alarm display and automatically set a temperature and a quantity for hot water when the amount of stored contents is reduced due to power interruption or the like, by providing a display means for giving the alarm display on a remote control unit upon such a reduction, and a setting means for automatically adjusting each set value to an appropriate value upon such a reduction. CONSTITUTION:A program sequence is so arranged that when the amount of set values stored in a RAM in a controlling part 10 is reduced due to power interruption or the like, a seven-segment LED at a display part 17 is operated to give a blinking display of, for example, two characters 'EO', while an indication LED 13a or 14a blinks to issue an alarm to the user, and a heat-up temperature, a hot water temperature for supply to a bathtub and a water level for the bathtub are automatically set at appropriate values, for example, 42 deg.C, 88 deg.C, and the second highest level in a six-level LED 15, respectively. Therefore, the user can give an instruction for starting the next automatic hot water supplying operation, without need for re-setting, and convenience in use and maintainability are enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic hot water supply system, and particularly to target value setting for automatic control thereof.

[Conventional technology]

For example, in a conventional automatic hot water supply system, which serves as a hot water supply source for this type of automatic hot water supply system, city water, etc. is heated by an electric heater according to a preset stacking temperature in an electric water heater, and then the initially set hot water temperature/water quantity is heated by an electric heater. It was configured to automatically supply hot water depending on (water level) etc.

[Problem to be solved by the invention]

However, this type of setting of temperature/hot water amount, etc., is configured to store the set values in RAM (random access memory) etc. via a control means such as a one-chip microcomputer, so for example, when there is an unexpected power outage, etc. The contents of the memory will be erased due to this, and even if you do not know this and command the automatic hot water supply operation next time, the target value will be lost.
There is a possibility that the boiling water will not work or the hot water will run out due to low water temperature, and the user will have to investigate and confirm that the memory has disappeared and reset the settings one by one, making it inconvenient to use. was there.

The present invention has been made in view of the above-mentioned problems of the conventional example, and it provides a warning/display when the memory contents are erased due to a power outage, etc.
The purpose is to provide a means to automatically set the amount of hot water, etc.

[Means to solve the problem]

For this reason, the present invention boils city water at a temperature preset on a remote control device, etc., mixes the hot water with an electric hot water mixing valve to reach the preset water temperature, and brings the water to the preset water level in the bathtub. In a system for automatically supplying hot water to a computer, etc., if the settings stored in advance in the memory disappear due to a power outage, etc., a display means for displaying a warning on the remote control device, and each setting value is set to an appropriate value. The above objective is achieved by configuring the apparatus to include a setting means for automatic setting.

[Effect]

With the configuration of the present invention as described above, even if the set value memory for the target gutter temperature of the hot water supply source, hot water supply temperature/hot water amount, etc. disappears due to a power outage, for example, the settings can be reset at the next automatic hot water supply operation command. Even if you forget to do it, you can automatically supply hot water at the appropriate temperature and amount, improving usability.

〔Example) The present invention will be explained below based on examples.

FIG. 1 shows a block diagram of an embodiment of an automatic hot water supply system for a bathtub according to the present invention.

(Structure) 1 is a can body tank of an electric water heater, and 2 is a heater disposed inside the tank. Low-temperature city water W introduced from the bottom of the can body 1 is heated by the heater 2, and high temperature hot water H6 is supplied to the top of the can body 1.

3 is an electric hot water mixing valve for mixing this high-temperature hot water H8 and city water W to obtain hot water at a desired temperature, and 4 is a first electric (or electromagnetic) valve for controlling the flow of the hot water. 1.5 is a water receiving M (distern) for separating the city water W side from the bathtub system where hot water is to be supplied; Bath NI8 by pump 7
Hot water is supplied from the bottom. A temperature/water level detection sensor 9 is disposed close to the hot water inlet of the bathtub 8.

Reference numeral 10 denotes a control unit composed of, for example, a one-chip microcomputer, and reference numeral 11 denotes a remote control device (abbreviated as "remote control") disposed, for example, in the kitchen, dressing room, etc., and each of the components 3, 4, 6, 7゜9, etc., each control unit 1o
A signal line is connected to the controller to perform optimal control.

FIG. 2 shows an enlarged front view of the remote control 11. 12
is 88℃ or 6 using the groove temperature setting button on the electric water heater.
Select one of 5°C and display it by lighting the respective display LED (light emitting diode). Also, 13.1
4 are buttons for setting the water temperature and water level in the bathtub 8, each having display LEDs 13a, 14a and a 6-stage bathtub water level display LED 15. By pressing the rise/fall button 16, the 7-segment LED The display unit 17 is configured to display the respective set values.

(Display/Auto Setting) The feature of this embodiment is that when the contents of each set value stored in the RAM of the control unit 10 disappear due to the power outage etc., the 7 segment LED of the display unit 17 displays In addition to displaying the two characters "EO" etc. blinking, each of the above-mentioned displays LE
D13a.

14a flashes to warn/notify the user, and automatically sets the gutter temperature to 88°C and the bathtub hot water temperature to 4.
At 2℃, the water level in the bathtub is set to 2 from the top of the 6-stage LED 15.
This is because the program sequence is configured to set appropriate values for each stage. FIG. 3 shows a flowchart of the display/setting sequence.

(Memory Disappearance 9 Decision) Furthermore, FIG. 4 shows a flowchart of the operation sequence for determining whether the memory disappears due to a power outage or the like, and FIG. 4a shows an explanatory diagram of memory confirmation leaning.

The memory confirmation area is set in the RAM area of the control unit 10, and when the power is constantly supplied and the program is running, for example, the address FF0O, FF0I, =
- It is programmed to store numerical values from 0 to 7 in order.

At this time, if the main power is turned off due to a power outage, etc., the program will stop, and the backup battery built into the control unit 10 will save the contents of the RAM (from 0 to 0 in the memory confirmation area).
(including 7 numerical values) are held in the state at the time the program was stopped. In this case, if the backup battery also runs out, the contents of the RAM become unstable and the probability that the values 0 to 7 will remain in their initial state becomes extremely low.

The flowchart in Figure 4 shows that when this program first starts running, it checks whether the contents of the memory confirmation area are 0 to 7 in order, and the contents of the RAM, including the contents of temperature, water level, etc., are checked. , it is determined whether the program has been backed up while it was still running.

In the figure, both A and B are calculation memories (registers) built into the microcomputer, and A←(memory confirmation area start address 10B) in step S2.
means that the contents of the memory confirmation area at the address where the value of B is added to the start address is transferred to A. Now, the start address or FF0O, the value of B is 0, and the confirmation area is written as described above. Assuming that 0 to 7 are entered in order, A←(FF
OO+B) =A←(FFOO+0) =A←(FFOO) =A←0, and A is filled with O.

After that, in step S3, it is checked whether A is 0 or not, in step S4, 1 is added to B, and this is added in step S5.
The process continues until B>7, that is, B=8, as shown in FIG. In this way, if even one of them becomes A≠B, it is determined that the memory has been erased, and the gutter temperature and hot water supply temperature/water level shown in step S6 are automatically set to appropriate values.

(Other Embodiments) In the above embodiments, an example of an automatic hot water supply system for a bathtub using an electric water heater was explained, but the principle of the invention is not limited to bathtubs only, and can also be applied to hot water tanks for other purposes. Of course, it can be applied.

Further, other modifications may be adopted regarding the determination, display, setting method, etc. of memory erasure.

〔Effect of the invention〕

As described above, according to the present invention, when the memory of the target setting values such as the gutter temperature of the hot water supply source, the hot water supply fA/hot water amount, etc. is erased due to a power outage, etc., this is displayed and warned on the remote control device, etc. In addition, since the various setting values are configured to be automatically set to appropriate values, the user can command the start of the next automatic hot water supply operation without having to reset the settings each time, improving usability and maintainability. do.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an embodiment of the bathtub automatic water heater according to the present invention, FIG. 2 is an enlarged front view of its remote control, and FIG. 3 is a display/setting sequence flowchart when the memory is erased. FIG. 4 is a flowchart of the control operation sequence for memory erasure, and FIG. 4a is an explanatory diagram of the memory confirmation area. 1--・-Can body (tank) 3-----One motorized hot water/water mixing valve 4/6------First/second motorized valve 5 =----
-Water tank (Jistern) 7-------・Pump 8...Bathtub 10--Control 11 axes...Remote control 17...Display section (7 segment LED) 12a
/12b, 13.14a, 15-----LED
W ------- City water H,, H------- Hot water

Claims (1)

[Claims] A system that boils city water to a temperature preset on a remote control device, etc., mixes the hot water with an electric hot water mixing valve to reach the preset water temperature, and automatically supplies hot water to a bathtub, etc. to a preset water level. , a display means for displaying a warning on the remote control device when the settings stored in advance in the memory disappear due to a power outage, etc., and a setting for automatically setting each of the settings to appropriate values. An automatic hot water supply system characterized by comprising: