KR200406779Y1 - Control Circuit of Steam Spray for Steam Cleaner - Google Patents

Abstract

 The present invention relates to a spray amount control circuit of the steam cleaner for controlling the spray amount by reducing the power supplied to the heater by half after a predetermined time after the operation.

According to the present invention, a heater that generates heat by an applied commercial AC power source, a DC voltage generator for connecting in parallel with the heater, and converts the commercial AC voltage into DC and outputs a predetermined DC voltage from the DC voltage generator. A predetermined DC voltage is applied as an operating voltage, and is based on a 'trigger voltage Vtr' input and a 'threshold voltage Vth' input after a predetermined time after the 'trigger voltage vtr' is applied. A timer IC outputting a switching control signal ', a relay driver turned on / off based on a' switching control signal 'input from the timer IC, and an amount of power supplied to the heater based on the on / off of the relay driver Characterized in that configured to include a heater driving unit. According to the configuration as described above, there is an advantage that can reduce the power consumption without a cleaning problem.

Steam cleaner, power consumption, diode,

Description

Control Circuit of Steam Spray for Steam Cleaner}

1 is a circuit diagram of a steam cleaner according to the prior art.

2 is a detailed configuration diagram of the steam spray amount control circuit of the steam cleaner according to one embodiment of the present invention.

    Explanation of symbols on the main parts of the drawings

110; Operation LED driver 120; Check LED Driver

130; Heater driving unit 140; DC voltage generator

150; Time setting unit 160; Trigger voltage generator

170; Timer IC 180; Relay drive

The present invention relates to a steam cleaner, and more particularly, to a steam spray amount control circuit of a steam cleaner suitable for reducing unnecessary power consumption by reducing the amount of steam sprayed by the steam cleaner after a predetermined time elapses after the steam cleaner operation.

1 is a circuit diagram of a conventional steam cleaner according to the prior art.

As shown in FIG. 1, the steam cleaner according to the related art has a heater (H) and a light emitting diode (LED) when a switch SW is on and commercial AC power is applied. LED ') flows current.

The LED (LED ') emits green light to inform the user of an operation state, and the heater (H) generates heat by supplying heat to surrounding water (not shown) to generate steam.

When the heater (H) is heated, the thermostat (SS) is open so that the heater (H) current flows to the LED (LED ''), the resistance of the resistor (Rb) is very high compared to the heater (H) impedance Because of the large size, almost no current flows in the heater H, and as a result, the heater H does not generate heat.

However, the circuit configuration of the steam cleaner according to the prior art as described above has the following problems.

When the heater H generates heat by supplying heat to the surrounding water by turning on the steam cleaner operation switch, steam gradually rises in temperature and steam is generated after a predetermined time (for example, 3 minutes when 800W is supplied). do.

Then, the power continuously supplied to the heater H maintains the same value, so that the amount of steam spraying is constantly increased.

However, once the water generates steam, even if the initial heater power consumption is not applied, steam continues to be generated, and in fact, the user does not need the initial power consumption, for example, 800W, to use the steam cleaner.

Nevertheless, there is a problem in that unnecessary power consumption is uniformly applied to the heater H irrespective of the amount of steam sprayed, thereby causing unnecessary waste of power consumption.

The present invention was created to solve the problems of the prior art as described above. The purpose of the steam spray amount control circuit of the steam cleaner according to the present invention is to control the power consumption of the steam cleaner by controlling the power applied to the heater according to the use time. It is to provide a steam spray amount control circuit of the steam cleaner can be significantly reduced.

Steam spray amount control circuit of the present invention for achieving the above object is a heater that generates heat by the commercial AC power applied, connected in parallel with the heater, after converting the commercial AC voltage to DC predetermined DC A DC voltage generator for outputting a voltage and a predetermined DC voltage applied from the DC voltage generator as an operating voltage, and a predetermined time after the input of the trigger voltage Vtr and the trigger voltage vtr. A timer IC for outputting a switching control signal based on a threaded voltage Vth input later, a relay driver turned on / off based on a switching control signal input from the timer IC, and the relay driver. It characterized in that it comprises a heater driving unit for controlling the amount of power supplied to the heater on the basis of on / off of.

The 'switching control signal' output from the timer IC is a 'low' signal or a 'high' signal.

The steam spray amount control circuit of the steam cleaner according to the present invention, the heater driving unit, the maximum power supply to the heater when the relay driving unit is off, and when the relay driving unit is turned on, the power supply less than the maximum power to the heater Characterized in that.

The steam spray amount control circuit of the steam cleaner according to the present invention is characterized in that the heater driver supplies 1/2 of the maximum power to the heater when the relay driver is turned on.

Steam spray amount control circuit of the steam cleaner of the present invention is connected to the heater, characterized in that further comprises a thermostat (thermostat) is turned off when the heat generated from the heater is more than a predetermined value.

The steam spray amount control circuit of the steam cleaner according to the present invention operates by a predetermined DC voltage applied from the DC voltage generator, and applies a trigger voltage generator to apply a trigger voltage Vtr to a trigger terminal of the timer IC. And a DC voltage applied from the DC voltage generator, and after a predetermined time after outputting the trigger voltage Vtr of the trigger voltage generator, the thread hold terminal of the timer IC It is characterized in that it further comprises a 'time setting unit' for applying a thread hold voltage (Vth).

In the steam spraying amount control circuit of the steam cleaner according to the present invention, the relay driver includes a resistor connected in series with an output terminal of the timer IC, a base connected to the resistor, an emitter grounded, and a switch input from the timer IC. A transistor that is turned on / off by a control signal, a relay connected to an emitter terminal of the transistor to drive when the transistor is turned on, and an LED connected to the relay to indicate an operation state of the relay. It is characterized by.

The steam spray amount control circuit of the steam cleaner according to the present invention is characterized in that the heater driving unit includes a diode connected to the relay contact and the relay contact switched by the driving of the relay.

Next will be described in detail with reference to the accompanying drawings a preferred embodiment of the steam spray amount control circuit of the present invention steam cleaner.

2 is a detailed circuit diagram of the spray amount control circuit of the steam cleaner according to an embodiment of the present invention.

As shown in FIG. 2, the steam spray amount control circuit of the steam cleaner includes an operation LED driver 110, a heater H, a smostat SS, a check LED driver 120, and a heater driver 130. ), A 'DC voltage generator' 140, a timer IC 170, a time setting unit 150, a 'trigger voltage generator' 160, and a relay driver 180.

The 'operation LED driver 110' is an LED for displaying an operation state of the steam cleaner. When the power switch SW1 is turned on, the operation LED LED1 operates to emit light (eg, green) of a specific wavelength. Give out

In addition, when the power switch SW1 is turned on, since the current flows only from the resistor R1 to the LED LED1 and the diode D1 in the operation LED driver 110, the current does not flow in the reverse direction. Only one half of one cycle of frequency causes current to flow to the LED.

The heater (H) generates heat by the supplied current, and supplies heat to the surrounding water to generate steam.

When the heat generated from the heater H is greater than or equal to a predetermined value, the smostat SS is turned off to cut off power applied to the heater.

The inspection LED driver 120 is an LED indicating an overheating state of the heater H. When the thermostat SS is turned off when the heater H is overheated, the 'check LED' LED2 is operated to operate at a specific wavelength. It emits light (eg red).

The DC voltage generator 140 converts an applied AC voltage into a DC voltage and outputs a predetermined voltage value Vcc. The DC voltage generator 140 includes a resistor R3, a capacitor C1, and a bridge diode BD1.

The 'trigger voltage forming unit' 160 is composed of a resistor R5 and a capacitor C3 to output the trigger voltage Vtr of the timer IC 170.

The time setting unit 150 is composed of a resistor R4 and a condenser C2 and applies a thread hold voltage Vth to the thread hold terminal of the timer IC 170 after a predetermined time.

The 'predetermined time' is a value determined by the resistance of the resistor R4 and the capacitance of the capacitor C2, and is applied to the capacitor C2 by the DC voltage Vcc input from the DC voltage generator 140. It means a time interval from when charging starts until the capacitor C2 voltage V2 becomes the thread hold voltage Vth (for example, V2 = 2/3 x Vcc). In addition, the charging of the capacitor C2 starts with the application of the trigger voltage Vtr to the trigger terminal of the timer IC 170, which discharges the capacitor C2 voltage V1 from the timer IC 170. This is because it is connected to the (DISCHARGE) terminal.

When the 'predetermined time' is described in terms of the timer IC 170, the trigger voltage Vtr is applied to the trigger terminal of the timer IC 170 until the thread hold voltage Vth is applied to the thread hold terminal. Is the time interval.

The timer IC 170 uses the voltage Vcc applied from the DC voltage generator 140 as an operating voltage and is based on the trigger voltage Vtr input from the trigger voltage generator 160. Triggered to output a 'high' signal, and outputs a 'low' signal based on the thread hold voltage (Vth) input from the time setting unit 150

The timer IC 170 may be implemented by, for example, KA555.

The relay driver 180 is driven on / off based on a switching control signal applied from the timer IC 170. That is, the relay driver 180 is turned off when the 'high' signal is input from the timer IC 170, and the relay driver 180 is turned on when the 'low' signal is input from the timer IC 170.

The relay driver 180 includes a resistor R6, a transistor Q1, a relay RY, a diode D4, and an 'automatic LED' LED3.

The transistor Q1 is turned off when the 'high' signal is input from the timer IC 170 and turned on when the 'low' signal is input from the timer IC 170 to drive the relay RY.

The 'automatic LED' (LED3) is an LED that emits light when the relay RY is driven, and the steam spray amount control circuit according to the present invention automatically operates to reduce the power consumption by half, thereby reducing the steam spray amount by half. LED for displaying to the user. The 'auto LED' (LED3) emits yellow light, for example.

The heater driver 130 controls the amount of power supplied to the heater H based on / off of the relay driver 180.

That is, the heater driver 130 supplies the maximum power to the heater H when the relay RY of the relay driver 180 is turned off (that is, no current flows in the relay RY), and the relay driver When the relay RY of 180 is turned on (that is, when a current flows in the relay RY), half of the maximum power is supplied to the heater H.

That is, the heater driving unit 130 is composed of a relay contact (RY ') and a diode (D3), if the contact of the relay (RY) is a NC contact heater (H) → NC contact → the statistic (SS) to the heater When the full power is supplied, that is, full power, and the relay RY is turned on and the relay contact RY 'is moved to the NO contact, the heater → diode (D3) → the thermostat (SS) is applied to the heater (H). ) 1/2 of the total power.

As described above, the reason why only half of the electric power is supplied to the heater H is because only half-wave current flows in the forward direction and no current flows in the reverse direction in one cycle of the power frequency by the diode D3.

In FIG. 2, the diode D4 is a diode for protecting the circuit, and the resistors R1, R2, and R8 are resistors for applying a constant voltage to the LEDs LED1, LED2, and LED3.

Next, the operation of the steam spray amount of the steam cleaner of the present invention having the configuration as described above will be described.

First, when the power switch SW1 is turned on, the 'operation LED' LED1 of the 'operation LED driver' 110 is turned on to emit green light, and the relay contact RY of the heater driver 130 is an NC contact. In the state, the heater H operates.

On the other hand, when the heater (H) is heated to the statistic (SS) is off, the heater (H) → resistance (R2) 'check LED' (LED2) → current flows to the diode (D1) 'check LED' (LED2) (The current does not flow in the reverse direction as in the operation LED driver 110), and at the same time, the power supply of the DC voltage generator 140 is also turned off, and as a result, the timer IC 170 is initialized.

The AC voltage applied in the state where the statistic SS is normal (that is, the on state) is output as the DC voltage Vcc while passing through the DC voltage generator 140. That is, in one cycle of the power supply voltage AC which is AC to the DC voltage generator 140, a current flows from the resistor R3 to the capacitor C1 to the bridge diode BD1 to the zener diode ZD1 and the other half wave is bridged. A current flows from the diode BD1 to the zener diode ZD1 to the capacitor C1 to the resistor R3 to form a DC voltage Vcc. In one embodiment of the present invention was set to Vcc = 12 (V).

The capacitor C3 starts to be charged by the DC voltage generated by the DC voltage generator 140. The voltage V2 of the capacitor C3 rises from 0 (V) to trigger voltage Vtr, for example, Vcc. When x 1/3 (V) (that is, 4 (V)) (that is, when the trigger voltage Vtr is input to the trigger terminal of the timer IC 170), the timer IC 170 is triggered. From the moment (the timer IC 170 is triggered), the charge to the capacitor C2 starts to be charged (that is, the timer IC 170 starts to counter the 'predetermined time').

Since the time until the capacitor C3 starts charging at 0 (V) until the trigger voltage Vtr is a very small time, the power switch SW1 of the steam cleaner is turned on so that the thread hold voltage Vth is increased. The time until application and the 'predetermined time' are approximately equal.

In addition, the output signal of the timer IC 170 outputs a 'high' signal when the first capacitor C3 voltage V2 is 0V, and then even after the trigger voltage Vtr is applied, inside the timer IC 170. Maintain a 'high' state by the circuit configuration of.

In addition, the transistor Q1 receiving the 'high' signal from the timer IC 170 continues to be in an off state.

After the trigger voltage Vtr is input to the trigger terminal, charging of the capacitor C2 starts. When the capacitor C2 voltage V1 becomes higher than the thread hold voltage Vth, for example, Vth = Vcc × 2/3 (V) (in this example, 8 (V)) by charging the capacitor C2, the thread The timer IC 170 outputs a 'low' signal by the thread hold voltage input to the hold terminal.

The time until the capacitor C2 voltage V1 becomes the thread hold voltage Vth of the timer IC 170 (that is, the 'predetermined time') is the resistance of the resistor R2 and the capacitor C2. It is determined by the capacitance as described above.

For example, when the maximum power is 800W, the 'predetermined time' to which the thread hold voltage Vth is applied is 180 (sec) to determine the resistance of the resistor R2 and the capacitance of the capacitor C2. It is desirable to. This is because when the maximum power is 800 (W), the steam is sprayed after 180 (sec) after the operation of the power switch (SW1) (that is, since sufficient heat is supplied), and after 180 (sec) after the steam cleaner is operated. Even if you cut it in half, there is no big problem in cleaning.

As described above, the transistor Q1 that receives the 'low' signal from the 'timer IC' 170 is turned on, and at this time, a current flows through the relay RY to turn on.

As described above, when a current flows through the relay RY, the relay contact RY 'is switched from the contact NC to the contact NO.

When the relay contact RY 'is switched to the contact NO, the current flowing to the heater H flows to the diode D3 branch, and as described above, the power supplied to the heater H is 1 / the first power. Only 2 will be supplied.

When the power supplied to the heater (H) is cut in half as described above, the amount of steam sprayed is also reduced in half.

The embodiment of the present invention is just one embodiment of the technical idea of the present invention, and in the person skilled in the art, other modified embodiments are possible within the technical idea of the present invention.

The steam spray amount control circuit of the present invention having the configuration and operation process as described above has the following effects.

When operating the first steam cleaner, the maximum power is supplied to the heater H to smoothly spray the steam, and after 3 minutes of 'predetermined time', the power supplied to the heater is lower than the maximum power to reduce power consumption. There is an effect that can be reduced.

Since a predetermined time has elapsed since the steam cleaner proceeds, even if the amount of steam sprayed by the heater supply power is reduced, there is no effect on cleaning and only the power consumption is reduced.

Claims (7)

A heater that generates heat by an applied commercial AC power source; A DC voltage generator connected in parallel with the heater and converting the commercial AC voltage into DC and outputting a predetermined DC voltage; A predetermined DC voltage applied from the DC voltage generator is used as an operating voltage, and is input to a thread-hold terminal after a predetermined time after the trigger voltage Vtr and the trigger voltage vtr are input to the trigger terminal. A timer IC (Integrated Circuit) for outputting a 'switching control signal' based on the 'threshold voltage Vth'; A relay driver which is turned on / off based on a 'switching control signal' input from the timer IC; And, And a heater driver for controlling the amount of power supplied to the heater based on the on / off of the relay driver. The method according to claim 1, wherein the heater driving unit, Steam spray amount control of the steam cleaner, characterized in that for supplying the maximum power to the heater when the relay drive unit is off (off), and less than the maximum power to the heater when the relay driver is on (on) Circuit. The method according to claim 2, The heater driving unit, When the relay driving unit is turned on, the steam spray amount control circuit of the steam cleaner, characterized in that for supplying half the maximum power to the heater. The method according to any one of claims 1 to 3, And a thermostat connected to the heater to be turned off when the heat generated by the heater is greater than or equal to a predetermined value. The method according to claim 4, A 'trigger voltage generator' that operates by a predetermined DC voltage applied from the DC voltage generator and applies a 'trigger voltage Vtr' to a trigger terminal of the timer IC; And, It operates by the DC voltage applied from the DC voltage generator, and after the predetermined time after the output of the trigger voltage (Vtr) of the trigger voltage generator, the thread hold voltage to the thread hold terminal of the timer IC Steam spraying amount control circuit of the steam cleaner, characterized in that it further comprises a 'time setting unit' for applying (Vth). The method according to claim 5, The relay drive unit, A resistor connected in series with the output terminal of the timer IC; A transistor whose base is connected to the resistor, whose emitter is grounded, and which is turned on / off by a 'switching control signal' input from the timer IC; A relay connected to an emitter terminal of the transistor and driving when the transistor is turned on; And, And a light emitting diode (LED) connected to the relay to indicate an operation state of the relay. The method according to claim 6, The heater driving unit, A 'relay contact' switched by the driving of the relay; Steam spray amount control circuit of the steam cleaner comprising a diode connected to the 'relay contact'.

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