JPS6122741B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to control for obtaining hot water using electric power, and in particular, a method for automatically leveling power consumption by automatically controlling the boiling temperature to match the season of the area where it is installed. This invention relates to power consumption leveling devices for water heaters and the like. Conventionally, there has been a device of this type as shown in FIG. In the figure, 1a and 1b are heaters, and a contact 2b is a relay configured integrally with a magnet coil 2a. Reference numeral 11 denotes a manual circuit switch for selecting the water temperature and average power consumption during seasons such as summer and winter. 9
Reference numerals a, 9b, and 9c are self-resetting thermoswitches attached to the upper, middle, and lower parts of the hot water tank.
Further, 9d is a thermoswitch for detecting the temperature of the water supply, and 5 is an earth leakage detection circuit breaker. In such a configuration, the heater 1a or 1
b is the set position a of the changeover switch 11;
Depending on b, c, thermo switches 9a, 9
The heater current is controlled to be cut off and the temperature is controlled by energizing the thermostats b, 9c, and 9d according to their operating states, and detecting the temperature in accordance with the set temperature of each thermoswitch. Here, when the switch 11 is set to the set position a, the thermo switch 9c operates to energize only the heater 1a, thereby saving the water temperature and leveling the power consumption. Furthermore, when the switch 11 is set to the set position b, the heater 1b is also energized depending on the operating state of the water supply temperature detection thermoswitch 9d.
The increase in water temperature is automatically added. In addition, when in set position c, heaters 1a and 1 are unconditionally
energization is performed, the set temperature of each thermoswitch is detected, and the current is cut off. That is, by switching the switch 2, the boiling temperature is lowered and power leveling (peak cut) is carried out in the summer set position a. Further, in set position b, the above-described operation is performed when the water supply temperature is high, but when the water supply temperature is low, the boiling temperature is raised and power leveling is not performed. On the other hand, even when the switch 11 is set to the set position c in winter, the boiling temperature is raised and power leveling is not performed. In this way, the above-mentioned conventional water heaters have to be operated manually, and because they can only switch between two seasons, such as summer and winter, they have low temperature control and power leveling effects. There were some drawbacks. In addition, the number of high-power components such as heaters, thermoswitches, changeover switches, and relays increases, resulting in higher costs. This invention was made in order to improve the above-mentioned drawbacks of the conventional technology, and it equalizes the power consumption of water heaters, etc. by automatically reflecting seasonal information and local information in hot water boiling temperature control. It provides equipment. Embodiments of the present invention will be described in detail below with reference to FIG. In the figure, 1 is a heater for water heating, 2 is a power control element such as a reverse conduction thyristor or triax, 3 is a photo coupler, 4 is a thermostat for preventing excessive temperature rise, 5 is an earth leakage detection circuit breaker, and 6 is a microprocessor. , 8 is an installation location setting device. For example, on a part of the slide type variable resistor, the installation location name is written in order of temperature, such as Hokkaido, Tohoku, Hokuriku, Northern Kanto, etc. When the slider is set at the installation location, an output corresponding to the set position is generated.
10 is a water boiler detector, and 11 is a built-in annual cycle timer. In this case, the annual cycle timer 11 is configured as software inside the microprocessor 6.
For example, count clock pulses and start from January 1st.
It is constituted by a soft counter that calculates up to December 31st and outputs, for example, monthly signals from 1 to 12 as seasonal signals at that time. Next, the operation of the above-described configuration will be explained. When power is supplied to power supplies A and B, the microprocessor 6 takes in seasonal information from the annual cycle timer 11 and information from the installation location setting device 8, which has been incorporated in the microprocessor 6 in advance. The program calculates the optimal power supply amount and optimal boiling temperature. Here, the calculation of the optimum boiling temperature is calculated by calculating the optimum water temperature and optimum water temperature to obtain the optimum boiling temperature under the conditions at each intersection of the installation location information and the seasonal information, as shown in Table 1. It has a memory in which energized power information is stored in advance, and when installation location information and seasonal information are supplied, the memory information of the address part selected by these two signals is read out, and this readout information From this point, the most suitable boiling temperature for the environment at this point in time and a corresponding energization control signal are output.

[Table] The energization control signal obtained in this way is given as a control signal to the power control element 2 such as a reverse conduction thyristor or triax through the hot coupler 3, and the optimum temperature is monitored by the hot water temperature sensor. The energization control signal indicating the optimum energization power for obtaining the optimum boiling temperature is supplied to the power control element 2 through the hot coupler 3, whereby energization control is performed and temperature control is performed. The microprocessor 6 takes in and judges the water temperature signal output from the water boiler detector 10, and when it is determined that the desired boiling temperature has been reached, the energization control signal is sent. Abort. By repeating the above operations, it is possible to control the temperature of the hot water used, which varies depending on the season or region, to an optimal value and reduce energy loss caused by the amount of remaining hot water. In addition, at this time, the power supplied to the heater 1 is simultaneously controlled to an optimum value, resulting in an equal peak cut effect, which equalizes the average power consumption, which is also effective in saving energy and increasing the efficiency of the power system. Also, if you need to keep the water temperature constant depending on your circumstances, you can use the cycle timer 1 according to the season.
1, and the hot water temperature can be set higher or lower depending on the installation location and volume setting. As explained above, according to the present invention, since the boiling temperature is automatically controlled by the output signals of the annual cycle timer and the installation location setting device, the boiling temperature varies depending on the season and the installation location. The temperature of the hot water used will always be automatically controlled to the optimum value. In addition, although the outside temperature in each season differs depending on the region, by providing an installation location setting device, optimization control can be performed simply by setting the setting region. Along with this, the setting work is also simplified. Furthermore, since peak cutting is performed by controlling the heating power, power consumption can be leveled and energy can be saved. Furthermore, since the power control section and the control section are electrically separated, the number of high-power components is reduced, resulting in various excellent effects such as overall cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of a conventional example, and FIG. 2 is a circuit configuration diagram showing an embodiment according to the present invention. 1...Water heating heater, 3...Photo coupler, 5...Earth leakage detection circuit breaker, 6...Microprocessor, 8...Installation location setting device, 10...Water boiler detector, 11... Annual cycle timer.

Claims (1)

[Claims] 1 A heating heater installed inside the water heater,
a water boiler detector that detects the boiling of hot water heated by the heating heater; an installation location setting device that outputs regional information by setting the region of the installation location; A microprocessor that takes in the output signal of the installation location setting device, calculates the optimal boiling temperature, and outputs a heating control signal to achieve this boiling temperature, and a heating control signal output from this microprocessor. a power control element for controlling the power supply to the heating heater according to the heating time, and an annual cycle timer means for outputting seasonal information at that point in time by counting one year as one cycle; , calculating information such as the optimum temperature and the optimum energizing power from the information specified by the location information according to the output signal of the installation place setting device and the seasonal information specified by the annual cycle timer means; 1. A power consumption leveling device for a water heater, etc., comprising a calculation means for determining an optimum boiling temperature and outputting an energization control signal for obtaining the calculated boiling temperature.