JP3780604B2 - Hot water heater control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a controller for a hot water heater / heater.
[0002]
[Prior art]
Conventionally, there are two types of heating controllers: a heating controller having a two-stage voltage ON / OFF signal and a serial signal heating controller, and the heating controller connection terminal and signal determination circuit of the hot water heater are provided separately. It was. Hereinafter, the configuration will be described with reference to FIGS.
[0003]
As shown in FIG. 4, the hot water heater 16 and the heating controller 17 are connected by a signal line. The heating controller 17 outputs a heating operation request signal to the hot water heater 16 and simultaneously opens the valve 18 to perform the heating operation.
[0004]
Next, the structure of the control apparatus for the hot water heater will be described with reference to FIG. In the figure, a first signal input means 11 for inputting a signal of the first heating controller 1 having a two-stage voltage ON / OFF signal, and a first signal for judging a signal from the first signal input means 11. A signal determination unit 13, a second signal input unit 12 for inputting a signal of the second heating controller 2 of the serial signal system, and a second signal determination unit 14 for determining a signal from the second signal input unit 12. And the heating combustion unit 7 and the control unit 15 that receives signals from the first signal determination unit 13 and the second signal determination unit 14 and outputs signals to the heating combustion unit 7.
[0005]
[Problems to be solved by the invention]
However, in the above configuration, the hot water heater has connection terminals corresponding to two types of heating controller having a two-stage voltage ON / OFF signal and a serial signal heating controller. There is a problem that the cost is increased due to erroneous connection and two types of signal determination circuits.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is provided with a signal determination unit that determines an input signal regardless of which of the two types of heating controllers is connected to the connection terminal of the heating controller. Thus, heating combustion can be performed regardless of which of the two types of heating controllers is connected to the connection terminal.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is a signal input means for inputting a signal of a first heating controller having a two-stage voltage ON / OFF signal and a signal of a second heating controller of a serial signal system, A first signal determination unit for determining a signal of the first heating controller having an ON / OFF signal of a two-stage voltage from the signal input means, and a signal of the second heating controller of the serial signal system from the signal input means And a control unit that receives signals from the first signal determination unit and the second signal determination unit and outputs a signal. And the signal of a some heating controller can be determined with one signal input means.
[0008]
The invention according to claim 2 of the present invention is a signal input means for inputting a signal of a first heating controller having a two-stage voltage ON / OFF signal and a signal of a second heating controller of a serial signal system, A signal conversion unit that converts the signal of the heating controller from the signal input means, a signal determination unit that determines the signal from the signal conversion unit, and a control unit that receives the signal of the signal determination unit and outputs the signal is there. And like the invention concerning Claim 1, the signal of a some heating controller can be determined with one signal input means.
[0009]
The invention according to claim 3 of the present invention is such that the signal determination unit determines the type of the heating controller connected to the signal input means based on the power-on signal. As a result, the heating controller signal can be stored as a signal input from the signal input means.
[0010]
The invention according to claim 4 of the present invention is such that the signal determination unit determines the type when the heating controller is connected. As a result, it is possible to store which heating controller signal the signal input from the signal input means thereafter.
[0011]
In the invention according to claim 5 of the present invention, the signal determination unit determines the type of the heating controller connected to the signal input means based on the power-on signal, and the signal from the first heating controller is received when the power is turned on. When connected with ON, it is determined that there is an abnormality. This makes it possible to distinguish from a short circuit of the first heating controller.
[0012]
In the invention according to claim 6 of the present invention, when the input signal is a serial signal, the signal determination unit determines whether the input signal changes before a predetermined time elapses, and the input signal is ON or OFF. In this case, it is determined that there is an abnormality when a predetermined time has passed . This makes it possible to distinguish from a short circuit of the heating controller.
[0013]
Embodiments of the present invention will be described below with reference to the drawings.
Example 1
1 (a), (b) and (c), a signal of the first heating controller 1 having a two-stage voltage ON / OFF signal and a signal of the second heating controller 2 of the serial signal system are input. A signal input means 3, a first signal determination unit 4 for determining a signal of the first heating controller 1 having a two-stage voltage ON / OFF signal from the signal input means 3, and a serial signal from the signal input means 3 A signal is received in response to signals from the second signal determination unit 5, the heating combustion unit 7, the first signal determination unit 4, and the second signal determination unit 5 that determine the signal of the second heating controller 2 of the signal system Is provided.
[0014]
The operation in the above configuration will be described. The first signal determination unit 4 ignores even if the signal of the second heating controller 2 is input, and only when the signal of the first heating controller 1 is input, the control unit 6. To output a signal. Similarly, even if the signal of the 1st heating controller 1 is input, the 2nd signal determination part 5 ignores, and outputs a signal to the control part 6 only when the signal of the 2nd heating controller 2 is input.
[0015]
Thus, according to the present invention, it is possible to determine a plurality of heating controller signals with one signal input means.
[0016]
(Example 2)
In FIG. 2, the signal input means 3 for inputting the signal of the first heating controller 1 having a two-stage voltage ON / OFF signal and the signal of the second heating controller 2 of the serial signal system, and the signal input means 3 The signal converter 8 for converting the signal of the first heating controller 1 having the ON / OFF signal of the two-stage voltage and the signal of the second heating controller 2 of the serial signal system, and the signal from the signal converter 8 A signal determination unit 9 for determination, a heating combustion unit 7, and a control unit 10 that receives a signal from the signal determination unit 9 and outputs a signal to the heating combustion unit 7 are provided.
[0017]
The operation of the above configuration will be described. The signal conversion unit 8 converts the signals of the first heating controller 1 and the second heating controller 2 into signals having different frequencies and duties, for example, and outputs the signals to the signal determination unit 9. The signal determination unit 9 determines the signal converted by the signal conversion unit 8 and determines whether the signal is that of the first heating controller 1 or the second heating controller 2. In addition, a several heating controller signal can be determined with one signal input means similarly to Example 1. FIG.
[0018]
Example 3
In FIG. 3, after the power is turned on, it is determined whether or not the first heating controller is connected at A, and if it is connected, the connection of the first heating controller is stored at B. After the connection is stored in B, when a signal other than the first heating controller is input, an error is determined.
[0019]
(Example 4)
In FIG. 3, if a signal is input at E, it is determined whether the first heating controller is connected at F, and if the first heating controller is connected, the first heating controller at G if the first heating controller is connected. Remember the connection. After the connection and storage of the first heating controller at G, when a signal other than the first heating controller is input, an error is determined.
[0020]
(Example 5)
In FIG. 3, it is determined whether or not the first heating controller is connected at A, and if not connected, it is determined whether or not the signal is Hi at C. If Hi, the error is determined.
[0021]
When the input signal is Hi after the power is turned on, it cannot be determined whether the first heating controller is due to a short circuit or whether the second heating controller is ON and connected. Therefore, since it is very rare for the first heating controller to be connected in the ON state, an error determination is made.
[0022]
(Example 6)
In FIG. 3, in the flow shown after the first heating controller connection storage , a determination is made regarding an abnormality when the input signal is a serial signal. It is determined whether the input signal is Hi at H, and if it is Hi, it is determined whether a predetermined time has elapsed at I, and an error determination is performed if the predetermined time has elapsed. If the input signal is not Hi at H, whether or not a predetermined time has elapsed is determined at J, and if the predetermined time has elapsed, an error determination is performed.
[0023]
【The invention's effect】
As described above, according to the present invention, any one of two types of heating controllers having different input signals can be connected to one signal input means, and the signal can be determined regardless of which heating controller is connected.
[0024]
In addition, there is no need for the construction contractor to select the type of heating controller to be connected, and there is no risk of incorrect connection.
[0025]
Further, since it is not necessary to have two types of connection terminals and a signal determination circuit, the cost is reduced.
[Brief description of the drawings]
1A is a block diagram of a control device for a hot water heater in Embodiment 1 of the present invention, FIG. 1B is a diagram showing signals of a first heating controller of the device, and FIG. 1C is a second heating controller of the device. FIG. 2 is a block diagram of a hot water heater control apparatus according to a second embodiment of the present invention. FIG. 3 is a flowchart illustrating the hot water heater control apparatus according to the third to sixth embodiments of the present invention. 4] Block diagram showing a system of a conventional hot water heater [Fig. 5] Block diagram of a controller for the heater [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st heating controller 2 2nd heating controller 3 Signal input means 4 1st signal determination part 5 2nd signal determination part 6, 10 Control part 7 Heating combustion part 8 Signal conversion part 9 Signal determination part

Claims (6)

A first heating controller having a two-stage voltage ON / OFF signal, a serial signal type second heating controller, and a signal input for inputting signals from the first heating controller and the second heating controller Means, a first signal determination unit for determining a signal of the first heating controller by a signal from the signal input means, and a second signal determination for determining a signal of the second heating controller by a signal from the input means parts and a heating combustion section, said first signal determination unit and the control unit of the hot-water heating units having a control unit for controlling the by Ri before Symbol Heating combustion section to a signal from the second signal determining unit. A first heating controller having a two-stage voltage ON / OFF signal, a second heating controller of a serial signal system, and a signal input means for inputting signals from the first heating controller and the second heating controller; A signal conversion unit that converts the signal from the signal input means into another signal, a signal determination unit that determines a signal from the signal conversion unit, a heating combustion unit, and the heating combustion based on a signal from the signal determination unit The control apparatus of the hot-water supply heater provided with the control part which controls a part. The control apparatus for a hot water heater according to claim 1 or 2, wherein the signal determination unit determines the type of the heating controller connected to the signal input means based on the power-on signal. The hot water heater control apparatus according to claim 1 or 2, wherein the signal determination unit determines the type when the heating controller is connected. The signal determination unit determines the type of the heating controller connected to the signal input means based on the power-on signal, and determines that it is abnormal if the signal from the first heating controller is connected to ON when the power is turned on. The control apparatus of the hot-water heater according to 1 or 2. When the input signal is a serial signal , the signal determination unit determines whether the input signal changes before the predetermined time elapses, and determines that an abnormality occurs when the predetermined time elapses while the input signal remains ON or OFF. The control apparatus of the hot water heater according to claim 1 or 2.

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