KR100321927B1 - Automatic controller of steam sauna - Google Patents

Abstract

The present invention relates to a steam sauna automatic control device having a self-diagnostic function, an overvoltage protection function and an overcurrent protection function in a steam sauna for home appliances.

According to the present invention, the CPU 101 for controlling each unit, the display unit 102 for displaying the current situation, the switch 103 connected to the CPU 101 and the water supply state are checked and the normal operation state of the heater relay is checked. A control unit 100 configured to check IC9; A generator 200 comprising a plurality of ICs IC1-IC8, relays RY1-RY4 for heater switching, and a transformer 201; Steam sauna self-diagnosis, overcurrent protection, overvoltage protection is composed of a tank 300 connected to the IC4 of the generator 200 and configured to detect the high / low of the water and a plurality of heaters H1-H3. There is an effect that can be performed.

Description

Automatic controller of steam sauna

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam sauna automatic control device, and more particularly, to a control device having a self-diagnostic function, an overvoltage protection function and an overcurrent protection function in a steam sauna for home appliances.

In general, many steam saunas are used at home, and the steam sauna is composed of a control unit 10 having a control function, a generator 20, and a tank 30 as shown in FIG. 1.

The control unit 10 performs a sauna on / off function, a sauna temperature setting function, a sauna temperature display function, and a sauna heat operation display function.

In addition, the generator 20 performs a time control function, a heater relay operation function, a solenoid valve control function for water input, and the tank 30 performs a steam function.

Looking at the operation relationship of the conventional household steam as described above, when the on switch of the control unit 10 in the state in which the power supply and each valve is connected, the start signal is sent to the generator (20).

The generator 20 receiving the start signal then starts the time function and sends the signal to the controller 10.

Accordingly, the controller 10 receiving this signal from the generator 20 displays the current sauna indoor temperature through a display such as a FND, compares the set temperature with the sauna indoor temperature, and sets the heat on / off to adjust the set temperature. To get started.

At this time, when the water in the tank 30 is below the appropriate level, the heater is forcibly turned off, and the generator 20 maintains the proper level of water by controlling the solenoid valve (S) as necessary while continuing to check the water level.

When all of these conditions are met and the heater mounted in the tank 30 is operated, steam is generated in the steam outlet so that the user can enjoy the sauna.

However, such a conventional steam sauna has the following problems.

First, water is not supplied due to a wire break or a failure of the solenoid valve (S) or a water inlet lock or a failure or a failure of the generator 20 after the start-up, or the heater 20. Even if it does not work, the user will not know its contents at all.

Second, since the heater relay of the conventional steam sauna operates simultaneously at the time of receiving the heat-out signal, a high current of 30 A flows at the same time. Instantaneous -3000V overvoltage will damage the parts, and the breaker will operate when instantaneously high voltage is applied during steam sauna operation.

Third, there are three heaters in the tank 30. When the three heaters are operated at the same time, the generator 20 is likely to be damaged due to the high current flowing.

Conventionally, the use of a fuse and a circuit breaker could be used as a means to solve the overvoltage problem among the above problems, but in the case of a fuse, it is necessary to replace the fuse. When the breaker is normally operated and the breaker is turned off, the sauna operation is turned off together with the breaker. If the effective power consumption is small, the power of the whole house may be cut off.

At this time, even if there is no problem in the electrical safety, other problems, such as a sense of pressure on the user when the circuit breaker off, computer data loss when the power of the whole house is cut off, difficulties in not knowing how to cope.

The present invention is to solve such a conventional drawback, an object of the present invention, it is possible to self-diagnose in the event of an abnormality of the steam device, to prevent the instantaneous high voltage when operating the steam sauna, and to step three heaters It is to provide a steam sauna automatic control device that can operate to prevent overcurrent.

1 is an overall block diagram of the present invention.

2 is a view for explaining the principle of operation of the present invention

3 is a view for explaining the self-diagnosis function of the present invention sauna

4 is an overvoltage prevention circuit diagram of the present invention.

5 is an overcurrent prevention circuit diagram of the present invention.

<Explanation of symbols on main parts of the drawing>

100: control unit 101: CPU

102: display unit 103: on switch

200: Generator 201: Trans

300: tank H1-H3: heater

RY1-RY4: Relay

In order to achieve the above object, the present invention provides a control unit including a CPU for controlling each unit, a display unit for displaying a current situation, a switch connected to the CPU, and an IC element for checking a normal supply state of water and a normal operation state of a heater relay. Means; A generator comprising a plurality of ICs, a relay for performing switching, and a transformer for converting an AC voltage into a DC voltage; It is connected to the generator's IC4 and detects the high / low of the water, and comprises a tank including a plurality of heaters.

In addition, the present invention is characterized in that the heaters are configured to operate step by step at a predetermined time interval.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described.

2 is an overall schematic diagram of the present invention, and is largely composed of a controller 100, a generator 200, and a tank 300.

The control unit 100 checks the CPU 101 for controlling each unit, the display unit 102 for displaying the current situation, the switch 103 connected to the CPU 101, and the normal supply state of the water. And IC9 for checking the normal operation state of the heater relay.

The generator 200 is composed of a plurality of ICs (IC1-IC8), a relay (RY1-RY4) and a transformer 201 for switching.

The tank 300 is connected to the IC4 of the generator 200 is configured to include a means for detecting the high / low of the water, and a plurality of heaters (H1-H3).

3 is a circuit diagram for the self-diagnosis function of the present invention, and this self-diagnosis function is configured around the CPU 101 of the controller 100 and the IC4 and the relays RY1 and RY4 of the generator 200. .

In other words, the terminal a of the CPU 101 is connected to the capacitor C1, the resistors R1-R4, the transistors Q1 and Q2, the diode D1 and the zener diode ZD1 to supply water normally. The capacitor C2, resistors R5-R8, transistors Q3 and Q4, diodes D2 and Zener diodes ZD2 are connected to the b terminal of the CPU 101. Heater relay is configured to check the normal operating state.

In addition, the relay RY4 is connected to the IC4 of the generator 200 through the resistors R10 (R11), the transistors Q6, and the diode D5, and the potential at the point D becomes the CPU's judgment standard. The terminal c is connected to the diode D3, the capacitor C4, the resistor R9, the transistor Q5, and the diode D4, and the relay RY1 is connected. .

4 is a circuit diagram for performing the overvoltage protection function of the present invention. When a normal voltage is input, transistors Q6 and Q7 are provided through resistors R13 and R14 at respective output terminals f and b of IC2 and IC4. The + 12VB power supply is supplied to the heater relays RY1, RY2, and RY3 through the transistor Q8 to perform normal operation of the heater, and IC2 determines whether the input voltage is normal or overvoltage.

Resistor (R18) and Zener diode (ZD3) receive the reference voltage, and resistors (R16) and (R17) send the input voltage and heater relay on-off signal to point C through IC4 through D6 and R19, so that the input voltage is maintained during heater relay operation. Also check.

Fig. 5 is a circuit diagram of an overcurrent prevention circuit of the present invention. The transistors Q9-Q11 which are a plurality of switching elements connected in series, IC4 which is an IC element which outputs a control signal to the transistors Q9-Q11, and the transistor Q9 are shown in Figs. A relay RY1 connected to the switch RY1 to perform switching, a relay RY2 connected to the transistor Q10 to perform switching, a relay RY3 connected to the transistor Q11 to perform switching, In the figure, reference numeral R21-R28 denotes a resistor, D9-D15 denotes a diode, and C8-C11 denotes a resistor.

Hereinafter, described in detail with reference to the accompanying drawings the operation of the present invention.

First, FIG. 2 is a view illustrating the operating principle of the steam sauna of the present invention as a whole. When the on switch 103 is pressed in the control unit 100, a start signal is transmitted to IC4 through IC3 of the generator 200. IC4 checks the level of the tank 300 to determine whether the relay RY4 is operating.

Only the relay RY4 is operated until the water level in the tank 300 becomes high. At this time, the heaters H1-H3 in the tank 300 do not operate.

If there is no problem with water supply and supply, the water level of the tank 300 reaches a high level within a few tens of seconds, and the generator 200 notifies the controller 100 of the water supply and supply through the water check. Is given.

At this time, if the water level in the tank 300 does not reach high even after 2 minutes, the CPU 101 determines that a problem has occurred in the water supply and demand, and notifies the user by displaying an error through the display unit 102.

In addition, when the generator 200 receives a signal indicating that there is no abnormality through the water check in the controller 100, the controller 100 compares the set temperature with the indoor temperature of the sauna and then, if the set temperature is higher than the room temperature, the controller 100. ) Sends a heater operation signal to the generator 200 through a heater out.

Therefore, the IC7 of the generator 200 receiving this signal activates the relay RY3, and informs IC4 of the signal that it has been activated, and IC4 sends a signal to IC6 after 0.5 seconds to operate the relay RY2.

In addition, when IC4 is notified that this relay RY2 is activated, IC4 sends a signal to IC5 again 0.5 seconds later to activate relay RY1.

In addition, the signal indicating that the relay RY1 is activated is notified to the control unit 100 through a temperature check, and if the signal cannot be transmitted due to any problem in the middle, it is determined that a problem occurs in the heater operation. The error is displayed through 102) and the user is informed.

Here, three heaters H1-H3 are operated when the heaters in the tank 300 operate. In the present invention, the heaters are operated at intervals of 0.5 seconds step by step without operating the heaters at the same time as in the prior art. Improved.

On the other hand, if the voltage flowing through the transformer 201 is checked in the IC2 or more than the reference voltage, the heater relay does not operate, for example, 220V input is normally operated, but when the inlet voltage is 230V or more, only heater operation Stop and control unit 100 to continue the normal operation and when the inlet voltage is returned to normal so that the heater operates normally so that the user does not have anxiety about the unstable inlet voltage.

Hereinafter, the self-diagnosis function will be described in detail with reference to FIG. 3.

First, how to check the normal supply state of water, if the control unit 100 sends a start signal to the generator 200, the IC4 starts to operate, when the water level in the tank 300 is not high, d of IC4 Outputs a high signal of about 11V.

Therefore, when the transistor Q6 receiving the high signal is turned on, the point D becomes 0V, so that the relay RY4 is operated and the solenoid valve S is also operated to supply water to the tank 300.

On the other hand, when 12VA is input to the control unit 100 through the point D and the water check line, the point A becomes 2.5V and the CPU 101 recognizes that the water level of the tank 300 is not high.

At this time, the CPU 101 waits until the water level in the tank 300 becomes high for safe operation. When the water level in the tank 300 becomes high, a low signal of 0 V is output from d of IC4, so that the transistor Q6 is used. Is off.

Therefore, when the transistor Q6 is turned off, the operation of the relay RY4 is stopped, the operation of the solenoid valve S is also stopped, and the water supply to the tank 300 is cut off.

In addition, when 0 V of the D point is recognized by the control unit 100 through the water check line, the A point becomes 0 V, and the CPU 101 recognizes that the water level in the tank 300 is high.

On the other hand, if no problem occurs in the middle, these signal cycles are completed within a few tens of seconds, but if a problem occurs, these signal cycles are not completed in two minutes.

At this time, the CPU 101 recognizes that a problem occurs in the water supply and demand, displays an error on the display unit 102 and informs the user.

Checking the normal condition of the heater relay is similar to the above, and when the generator 200 receives a signal indicating that there is no abnormality through the water check in the control unit 100, the indoor temperature is compared with the set temperature. When the set temperature is higher than the temperature, the control unit 100 sends a heater operation signal to the generator 200 through the heater out. The generator 200 operates the heaters H1-H3 as shown in FIG. 2. Although three relays RY1-RY3 are provided, the relay required for self-diagnosis is (RY1), and thus, only the relay RY1 is illustrated in FIG. 3.

Therefore, in operation, the relays RY3 (RY2) and RY1 are operated in sequence at 0.5 second intervals, and in the off state, the relays RY3 (RY2) and RY1 are turned off in turn.

At this time, the three relays are associated with each other so that the relay RY2 operates only when the relay RY3 is operated, and the relay RY1 operates only when the relay RY2 operates.

Therefore, when the control unit 100 normally sends an on / off signal through the heater out, it can be confirmed that the relay is normally operated in the generator 200 through the point C and the point B after 1.5 seconds.

In this case, if a signal is not transmitted due to a problem in the middle, it is determined that a problem occurs in the heater operation, and the CPU 101 displays an error through the display unit 102 to notify the user to perform a self function.

Hereinafter, the overvoltage protection function will be described with reference to FIG. 4. In the case of FIG. 4, the case of the relay RY1 will be described by way of example, and the case of the relays RY2 and RY3 will be omitted.

First, the operation of the fuse (F) and the breaker is the same as before, the overvoltage protection function of the present invention is a preliminary safety function to operate before the fuse (F) or the breaker.

That is, when + 220V and -220V flow into the power line, it becomes + 12VA through the transformer 201, and this power is supplied to the operating power of the IC4 and the relay RY4.

Point d is the reference voltage of + 10.3V, and point c changes according to the value of + 12VA.

That is, when the input voltage is 220V or less, the voltage becomes about + 10V, the point e becomes 0V, the point f becomes + 11V, and the transistor Q6 is turned on.

Next, IC4 receives the start signal from the controller 10 and outputs a + 11V high signal to b, so that the transistor Q7 is turned on, and as the transistors Q6 and Q7 are turned on, the ground level is turned on by the transistor Q1. Since the transistor Q1 is also applied to the base of the circuit, the driving voltage + 12VB is supplied to the heater relays RY1, RY2, and RY3 to control the tank heater normally.

If the power is input over 230V to the power line during start-up or during use, it will be supplied to + 12V without any large current, but the voltage at point c becomes + 10.5V, so point e becomes 11V and point f becomes 0V. Q6) is turned off, and accordingly the transistor Q8 is also turned off, and the driving voltage is cut off by the heater relays RY1-RY3.

Therefore, when the power supply of 230V or more is applied, the driving power of the relays RY1-RY3 is automatically cut off, and therefore, the breaker or the fuse F is first prevented before being burned out. Is not at all feel a sense of pressure, after the return to the normal input voltage is + 12VA is normally supplied and the heater relay (RY1-RY3) is also returned to normal.

Hereinafter, the overcurrent prevention function of the present invention will be described with reference to FIG. 5.

In the overcurrent prevention function of the present invention, when the heater out signal is received, three heater relays (RY1-RY3) are operated at 0.5 second intervals so that they flow in 10A increments.

This ensures a nine-fold greater safety than conventional ones, even if a 700-1000V overvoltage occurs momentarily.

First, a case where a high signal is input at the heater out will be described.

That is, the relay RY3 is operated when the transistor Q11 is turned on when the high signal is input at the heater out, and the voltage at the point a is input to the IC4.

Then, IC4 compares the reference voltage of point b by the resistors R21 and R22 with the voltage of point a and if the voltage at point b is high (0.5 seconds after RY3 on), the diode D10 goes high to point c through the diode D10. Output the signal.

Accordingly, the relay RY2 is operated while the transistor Q10 is turned on, and the voltage at the point d is input to IC4.

Then, IC4 compares the reference voltage of point b with the voltage of point d and outputs a high signal to point e when the voltage at point b is high (0.5 seconds after RY2 on), and transistor Q9 turns on to relay RY1. ) Will work.

On the other hand, the case where the low signal is input in the hit-out will be described.

That is, when the low signal is input, the transistor Q11 is turned off and the relay RY3 is turned off to input the point a voltage to the IC4.

Then, IC4 compares the reference voltage of point b with the voltage of point a and outputs a low signal to point c when the voltage at point b is low (0.5 seconds after RY3 off). Accordingly, the transistor Q10 is turned off and the relay is turned off. (RY2) is turned off, and the voltage at point d is input to IC4.

IC4 compares the reference voltage at point b with the voltage at point d, and outputs a low signal to point e when the voltage at point b is low (0.5 seconds after RY2 off). Accordingly, the transistor Q9 is turned off and the relay ( RY1) is also turned off, and the voltage at point e is input to IC4.

As described above, the present invention has a self-diagnosis function and a disconnection of a wire connecting the control unit 10 and the generator 20, a failure of the solenoid valve S, or a water inlet lock or failure, or a failure of the generator 20. When the water is not supplied or the heater is not operated due to the light, the error is automatically detected and the error is displayed so that the user can easily identify the abnormal state.

In addition, in the steam sauna, a high current of 30A flows at the same time, but the instantaneous voltage appears as an amount of instantaneous change, so when actually operated in this way, 2000-3000V overvoltage occurs momentarily to damage components. The function can be prevented by such a momentary voltage to prevent damage to the components.

In addition, it is possible to prevent the generator 20 from being damaged due to high current by operating three heaters in the tank 30 step by step so that the three heaters are not operated at the same time as before.

Claims (5)

CPU for controlling each unit, a display unit for displaying the current situation, the switch connected to the CPU, the control unit 100 performs a self-diagnostic function and a time control function to check the normal supply state of the water and the normal operation state of the heater relay Wow, A generator 200 which includes a plurality of ICs, a plurality of relays for performing switching, and a transformer for converting an AC voltage into a DC voltage, and performs an overvoltage protection function and an overcurrent protection function, And a means for detecting high / low water, connected to the generator IC4, and a plurality of heaters including a tank (300). The steam sauna automatic control device according to claim 1, wherein a plurality of heaters in the tank (300) are configured to operate step by step at predetermined time intervals. According to claim 1, wherein the self-diagnostic means of the control unit 100, IC4 which operates when a water check start signal or a temperature check start signal is input from the controller, A transistor Q6 switched on when the level in the tank is not high and switched off when the level in the tank is high, A relay RY4 and a solenoid valve S which is operated when the transistor Q6 is turned on and stopped when turned off; A plurality of relays which are operated stepwise by a switching operation of the transistor Q5 connected to the output terminal of the IC4; Recognizing the voltage change according to the on / off of the transistor Q6 to detect the high / low of the water level in the tank to check the normal supply state of water, and to recognize the voltage change according to the on / off of the transistor Q5 Steam sauna automatic control device characterized in that it comprises a CPU 101 for checking the heater relay operation state, and displays it in the event of an error. The overvoltage preventing means of the generator 200 is connected to a plurality of transistors Q6-Q8, IC2, IC4 for outputting control signals to the transistors Q6, Q7, and the IC2. And a relay (RY1) for switching the transistor (Q8), and a transformer (201) for converting an input AC power source into a DC power source. The overcurrent preventing means of the generator 200 includes transistors Q9-Q11 which are a plurality of switching elements connected in series, IC4 for outputting a control signal to the transistors Q9-Q11, and A relay RY1 connected to the transistor Q9 to perform switching, a relay RY2 connected to the transistor Q10 to perform switching, and a relay RY3 connected to the transistor Q11 to perform switching Steam sauna automatic control device, characterized in that configured to include.