KR20050022249A - Controller for electric heating bedding - Google Patents

Abstract

PURPOSE: A control apparatus is provided to prevent an overheat of a heater by detecting a rated current and recognizing a short-circuit of the heater when power is not supplied to the heater. CONSTITUTION: A control apparatus comprises a normal power supply unit(61) having a fuse; a DC power supply unit(62) for rectifying and smoothing the normal power by using the leak current of a condenser, and supplying DC power to each unit; an AC synchronous signal generating unit(63) for half-wave rectifying the normal power, and outputting an AC power synchronous signal; a non-inductive heater for generating heat by the normal power; a heater driving unit(65) for driving the heater by switching the normal power supplied to the non-inductive heater; a rated current detection unit(66) for detecting the current supplied to the non-inductive heater; a temperature control and control unit(64) for detecting the temperature of the non-inductive heater by using at least two thermistor temperature sensors, and permitting a user to set a temperature for the heater; a heater short detection unit(67) for detecting short-circuit of the non-inductive heater; a display unit(68) for displaying a non-inductive heater operation state and faults and failures; a power cutoff unit(69) for compulsorily cutting the fuse of the normal power supply unit; and a control unit for controlling the heater driving unit in accordance with the voltage detected by the rated current detection unit and the heater short detection unit, cutting off the fuse of the normal power supply unit by controlling the power cutoff unit when control for the power being supplied to the non-inductive heater is impossible, and controlling the display unit.

Description

CONTROLLER FOR ELECTRIC HEATING BEDDING}

The present invention relates to electrothermal bedding, and in particular, to block the magnetic and electric fields generated in the electrothermal bedding, forcibly disconnect the fuse in the case of power control, and to provide a safety device for blocking the overcurrent supply It relates to a control device.

In general, sleep is a very important part of our life, which accounts for about 30% of our lives, and the more good conditions we have, the better we can get physiologically and refreshing sleep, otherwise we can't get a good night's sleep. This fragile causes great disruption throughout social life.

In addition, bed sleep conditions including ambient air conditions such as temperature and humidity are important requirements for a good night's sleep. In other words, it is the ideal bed condition to be able to sleep without feeling the inconvenience caused by the heat and cold caused by the climate, the room temperature for this is 18-24 ℃, the bed temperature is 32-34 ℃, bed Humidity of 50 ± 5% is known to be suitable.

Therefore, in order to maintain the temperature of a bed appropriately, many heat transfer beddings are used in a general household.

The heat transfer bedding line has a heating wire embedded in the bedding line, and generates heat when power is supplied to the heating line. Therefore, the temperature controller for sensing the heat generated by the heating wire and correspondingly controls the power supply is essentially configured.

However, such electric heating bedding not only generates heat when the heating wire is supplied with power, but also generates a harmful electric or magnetic field that is harmful to the human body, or causes the fire and electric shock due to local overheating of the heating wire or short circuit and disconnection. do. In addition, a fire may be caused by the electrothermal bedding, due to carelessness of the user, such as going out for a long time while the power is turned on, and an electric shock may occur due to disconnection and short circuit of the heating wire and the power supply line.

In addition, in general electrothermal beddings, a safety device for detecting an overcurrent or overheating and shutting off the power in advance is installed in the electrothermal beddings, but it prevents the generation of harmful electric and magnetic fields, prevents local overheating of heating wires, and electrothermal beddings. The self-diagnosis function to identify the type of fault is not provided, so it is harmful to the human body when it is used for a long time and causes a fire and an electric shock, and the after-sales service of the bedding is expensive.

The present invention has been made in order to solve the above problems, as well as blocking the over-current / voltage supply, as well as by configuring a heater with a non-magnetic coaxial shield heating line to block the generation of harmful electromagnetic waves (electric and magnetic fields), self-diagnostic function The purpose of the present invention is to provide a control device for electric bedding, which can check a failure part and forcibly cut off the power supply when power control is impossible.

In accordance with an aspect of the present invention, a control apparatus for an electrothermal bedding device includes a commercial power supply unit having a fuse and supplying commercial power, and rectifying and smoothing the commercial power using a leakage current of a capacitor. A DC power supply for supplying power to each unit, an AC synchronous signal generator for half-wave rectifying the commercial power and outputting an AC power synchronous signal, an induction heater for generating heat by receiving the commercial power, and the non-induction heater The heater driving unit for driving the heater by switching the commercial power supplied to the power supply, the rated current detection unit for detecting the current supplied to the non-induction heater, and at least two thermistor temperature sensors, the temperature and the interior of the non-induction heater A temperature detection and control unit for detecting a temperature and allowing a user to set the temperature of the heater, and a foot of the non-induction heater Heater disconnection detection unit for detecting hot wire disconnection, a display unit for displaying the state and failure of the non-induction heater is operating, a power cut-off unit for forcibly cutting the fuse of the commercial power supply unit, the temperature detection and adjustment unit The heater driving unit is controlled according to a temperature detection and temperature setting, and a voltage detected by the rated current detection unit and the heater disconnection detection unit, and when the control of the power supplied to the non-induction heater is impossible, It is characterized by comprising a control unit for controlling the display unit and the like to block the fuse of the commercial power supply.

Here, the temperature detecting and adjusting unit may include a heater temperature detecting unit including a thermistor temperature sensor to detect the temperature of the non-induction heater, an internal temperature detecting unit including a thermistor temperature sensor to detect an internal temperature, and a user volume. It is characterized by being configured with a temperature control unit for adjusting the temperature to be set by adjusting.

The power cut-off unit is characterized in that it comprises an SCR connected to both sides of the commercial power supply voltage terminal, and a diode for applying the output signal of the controller to the gate terminal of the SCR.

The heater driving unit may include a triac for turning on / off commercial power supplied to the non-induction heater and a diode for applying an output signal of the controller to a gate terminal of the triac.

The heater driving unit includes a triac for turning on / off commercial power supplied to the non-induction heater, a transistor turned on / off according to an output signal of the controller, and outputting a DC power, and a DC power output through the transistor. It is characterized in that it comprises a diode for applying to the gate terminal of the triac.

The rated current detector has a resistance, a volume, and a condenser connected in parallel between one terminal of the heater driver and a commercial power source, and detects a current supplied to the non-induction heater and outputs it to the controller as a voltage value.

The rated current detector has a current detection transformer for detecting the current of the commercial power supplied to the non-induction heater through the heater driving unit, and a volume for converting the current detected by the current detection transformer into a voltage to output to the control unit It is characterized by being configured.

The heater disconnection detecting unit has a diode and at least two high resistances connected in series between the non-induction heater and the commercial power supply, so that the voltage divided by the two high resistances when the heater driving unit does not drive the non-induction heater. Is detected and output to the control unit.

Referring to the electrothermal bedding control apparatus according to the invention having such a feature in more detail with reference to the accompanying drawings as follows.

1 is a block diagram showing the configuration of the electrothermal bedding control apparatus according to the present invention, Figure 2 is a specific circuit configuration of the electrothermal bedding control apparatus according to the present invention.

That is, a commercial power supply unit 61 for supplying commercial power (AC100-220V) and displaying the commercial power, and a DC power supply unit 62 supplying DC power to each unit by rectifying and smoothing the commercial power. And an AC synchronous signal generator 63 for half-wave rectifying the commercial power to output an AC power synchronous signal, an induction heater 51 for generating heat by receiving the commercial power, and the non-induction heater 51. A heater driver 65 for driving the heater by switching the commercial power supplied, a rated current detector 66 for detecting a current supplied to the non-induction heater 51, and a temperature of the non-induction heater 51 And a temperature detection and control unit 64 for detecting a temperature inside the control device and allowing the user to set the temperature of the heater, a heater disconnection detection unit 67 for detecting disconnection of the heating wire of the non-induction heater 51; The non-induction heater 51 is operated A display unit 68 for displaying a state of being in operation, a state of the temperature controller and a state of the temperature detector, a power cut-off unit 69 for forcibly cutting the fuse of the commercial power supply unit 61, the temperature detection and The heater driver is driven by the AC waveform generated by the AC waveform generator 63 according to the temperature detection and temperature setting of the controller 64 and the signals of the rated current detector 66 and the heater disconnection detector 67. The control unit 65 controls the non-induction heater 51, and when the control of the power supplied to the non-induction heater 51 is impossible, the power cut-off unit 69 is controlled to control the commercial power supply unit 61. And a control unit 57 for blocking the fuse of the control unit and controlling the display unit 68 and the like.

Here, the specific circuit configuration of each part is as follows.

First, the commercial power supply 61 includes a fuse, a power switch, a resistor 06, and a light emitting diode 07 so that the user can turn on / off the power. The light emitting diode 07 emits light to indicate that power is being supplied.

The DC power supply 62 includes resistors 08 and 12, capacitors 09, diodes 10, rectifier diodes 11, zener diodes 13, smoothing capacitors 14 and 17, inductors 15 and It consists of a constant voltage regulator 16 and the like to rectify and smooth the commercial AC voltage to supply direct current (DC) power to each part.

That is, as a rectifier circuit using the leakage current of the condenser 09, a commercial AC voltage is applied to the condenser 09, and at this time, the diode 10 is operated in the reverse direction, so that the AC voltage applied to the condenser 09 is the rectifier. Half-wave rectified by (11), the voltage rectified by the smoothing capacitors (14, 17) is smoothed, and the voltage regulator (16) outputs a DC voltage necessary for each part.

Here, the resistors 8 and 12 are for overcurrent limit, the zener diode 13 is for overvoltage limit, and the inductor 15 is for noise blocking.

The AC synchronizing signal generator 63 includes resistors 19 and 20, a rectifier 18, and a zener diode 21 so that the commercial power is half-wave rectified by the rectifier 18 and the voltage half-wave rectified is the resistance. The voltage is divided by (19, 20) and input to the controller 52 through the zener diode 21. Here, the zener diode 21 is for overvoltage limit.

The temperature detecting and adjusting unit 64 includes a non-induction heater temperature detecting unit 64a for largely detecting the temperature of the non-induction heater 51, and an internal temperature detecting unit 64b for detecting an internal temperature of the controller of the present invention. And a temperature controller 64c for adjusting the temperature set by the user by adjusting the volume.

The induction heater temperature sensing unit 64a includes a thermistor temperature sensor 22, a resistor 24, and a condenser 23 so that the thermistor temperature sensor 22 and the resistor 24 are the induction heater 51. The resistance value is varied according to the temperature connected at both ends of the commercial power supplied to the divided voltage, and the divided voltage is input to the controller 52 as an analog signal. Here, the capacitor 23 is for a noise filter.

The internal temperature sensing unit 64b is connected to both ends of the thermistor 30 and the resistor 31 supplied by the DC power supply 62, and according to the heat generated in the control device, The resistance value is variable and divided by the resistor 31 and input to the controller 52.

The temperature controller 64c connects the volume 26 and the resistors 25 and 27 to both ends of the DC voltage in series so that when the user adjusts the volume 26, a corresponding current value is input to the controller 52. do.

Here, the temperature detecting and adjusting unit 64 further includes a reset unit 64d configured to include the resistor 28 and the condenser 29 to reset the control unit 52 each time the initial power is applied.

The heater driver 65 includes resistors 36 and 38, a diode 37, a triac 53, and the like, and a control signal output from the controller 52 controls the resistor 36 and the diode 37. When applied to the gate terminal of the triac 53, which is the power control element, the triac 53 is turned on / off so that commercial power is supplied to the non-induction heater 51 to drive the heater.

The rated current detector 66 includes a resistor 39, a volume 40, capacitors 41 and 42, and a zener diode 43 to the heater 51, the triac 53, and the resistor 39. When commercial power is supplied to the heater 51 in the series circuit, the current value of the heater 51 is represented as a voltage by the resistor 39, and the voltage is divided across the volume 40 so that the voltage is controlled by the controller 52. Is entered. Therefore, it is possible to determine whether the power supplied to the heater is normal or abnormal (overcurrent and overvoltage).

That is, the overcurrent will be detected when the heating wire of the non-induction heater 51 is shorted, an overcurrent flows between both ends of power input, or an overcurrent due to the change of the commercial power supply voltage is applied.

Here, the capacitors 41 and 42 are for the noise filter, and the zener diode 43 is for the overvoltage limit.

The heater disconnection detection unit 67 is composed of diodes 46 and 48, high resistances 44 and 45, and resistances 47, even though the triac 53 of the heater driving unit 65 is in the off state. 51), diode 46, and high resistances 44, 45 form a closed circuit. At this time, since the resistors 44 and 45 have a high resistance of 1 MΩ or more, a current capable of driving the non-induction heater 51 does not flow, but a minute voltage is applied to the resistor 44. Therefore, the minute voltage divided by the resistors 44 and 45 is input to the controller 52. If the non-induction heater 51 is disconnected, the minute voltage is not input to the controller 52. Here, when the heater 51 is disconnected, the resistor 47 and the diode 48 are for bypassing the voltage induced by the mutual capacitance of the heater 51 due to the non-inductive characteristic structure.

The display unit 68 includes a resistor 32, a light emitting diode 33, and the like, which is configured to display, by the controller 52, a failure occurrence such as short circuit and disconnection of the heater driving unit, overheating of the heater, and overheating of internal temperature. A second display portion 68b composed of a first display portion 68a, a resistor 34, a light emitting diode 35, and the like to indicate a failure such as a short circuit or disconnection of the non-induction heater 51; It is comprised by the 3rd display part 68c which displays the operation state of 51. As shown in FIG.

The power cut-off unit 69 is composed of resistors (01, 03), SCR (02), diode (04), condenser (05) and the like, so that the control signal (high signal) of the controller 52 is a diode (04) And when applied to the gate terminal of the SCR (02) through the resistor 03, the SCR (02) is turned on and the instantaneous current flows instantaneously disconnect the fuse of the commercial power supply 61. Here, the capacitor 05 is for a noise filter.

The controller 52 is a microcomputer with a built-in analog / digital converter, and may include a clock signal oscillator therein. However, in the drawing, the clock signal of the external clock oscillator is provided as a basic clock signal by including a clock oscillator XT. do.

The more detailed configuration of the main part in such a configuration is as follows.

3 is a block diagram of a power cut-off unit and a control unit according to the present invention.

The power cut-off unit 69 includes a resistor (01) and an SCR (02) connected in series on both sides of a commercial power supply voltage terminal, and a resistor (03) between a gate terminal of the SCR (02) and an output terminal of the controller 52. Diode (04) is connected in series, and the gate terminal of the SCR (02) is grounded through the capacitor (03).

Therefore, when the control signal (high signal) is output from the control unit 52, the SCR (02) is turned on, the over current flows momentarily, and the fuse of the commercial power supply unit 61 is momentarily disconnected.

4 is a configuration diagram of a heater driving unit, a rated current detection unit, a heater disconnection detection unit, and a control unit of the present invention.

The heater driving unit 65 configures the triac 53 to turn on / off commercial power to the non-induction heater 51, and includes a resistor between the gate terminal of the triac 53 and the output terminal of the control unit 52. 36 and the diode 37 are connected in series, and the resistor 38 is connected between the gate terminal and the output terminal of the triac, so that the output signal of the controller 53 is applied to the diode 37 in the forward direction. .

The rated current detector 66 has a resistor 39, a volume 40, and a condenser 41 connected in parallel between one terminal of the triac 53 and a commercial power source, so that the commercial power source is connected to the heater 51. When supplied, the current value of the heater 51 is represented by the resistor 39 as a voltage which is divided across the volume 40. As such, the voltage value divided by the volume 40 is removed by noise by the capacitor 42, and an overvoltage greater than or equal to the threshold voltage of the zener diode 43 is passed to the controller 52.

The heater disconnection detection unit 67 is a diode 46 and a high resistance (44, 45) is connected in series between the non-induction heater 51 and the commercial power supply terminal, the diode 48 and the resistor 47 is in series Connected. Here, the diode 46 and the high resistors 44 and 45 and the diode 48 and the resistor 47 are connected in parallel with each other. In this way, the closed circuit is formed through the heater 51, the diode 46, and the high resistances 44 and 45 even when the triac 53 of the heater driving unit 65 is in an off state. At this time, since the resistors 44 and 45 have a high resistance of 1 MΩ or more, a current capable of driving the non-induction heater 51 does not flow, but a minute voltage is applied to the resistor 44. Therefore, the minute voltage divided by the resistors 44 and 45 is input to the controller 52. If the non-induction heater 51 is disconnected, the minute voltage is not input to the controller 52. Here, when the heater 51 is disconnected, the resistor 47 and the diode 48 are for bypassing the voltage induced by the mutual capacitance of the heater 51 due to the non-inductive characteristic structure.

5 is a configuration diagram of a rated current detection unit according to another embodiment of the present invention.

That is, the rated current detection unit 66a of another embodiment of the present invention connects the current detection transformer 54 between the triac 53 of the heater driver 65 and the commercial power supply terminal to detect the current supplied to the heater. In addition, the current detected by the current detection transformer 54 may be converted into a voltage by the volume 40 and the converted voltage may be input to the controller 52 to detect the rated current applied to the heater. Here, the capacitor 42 is for noise removal.

6 is a block diagram of a heater driving unit according to another embodiment of the present invention.

That is, the heater driver 65a according to another embodiment of the present invention configures the triac 53 to turn on / off commercial power to the non-induction heater 51, and is output from the output terminal of the controller 52. A transistor 55 that is turned on / off in response to a signal and outputs DC power, and a diode 37 that applies DC power output through the transistor 55 to the gate terminal of the triac 53. do. Reference numerals not shown are resistors 36, 56, and 38.

The heating wire of the non-induction heater 51 has been previously filed by the present applicant (see Korean Utility Model Publication 20-0261088, 20-0276482 and 20-0288140).

Referring to the operation of the electrothermal bedding control apparatus according to the invention configured as described above are as follows.

First, when the user turns on the power switch of the commercial power supply 61, commercial power is supplied to each part, and the light emitting diode 07 emits light to indicate that the power is turned on.

In the DC power supply 62, the rectifier 11 is half-wave rectified using the leakage current of the condenser 09, and the smoothing capacitors 14 and 17 smooth the rectified voltage to adjust the voltage regulator 16. The DC voltage required for each part is supplied by).

In addition, the AC synchronization signal generator 63 inputs the commercial power to the controller 52 by dividing the half wave rectified voltage by the rectifier 18 and dividing the half wave rectified voltage by the resistors 19 and 20.

At this time, the reset unit 64d of the temperature detection and adjustment unit 64 resets the control unit 52 whenever initial power is applied.

The user adjusts the volume 26 of the temperature controller 64c to set a desired temperature. Accordingly, the controller 52 compares the voltage value set by the temperature controller 64c with the voltage output from the non-induction heater temperature sensor 64a for detecting the temperature of the non-induction heater 51. The heater driver 65 is controlled.

That is, since the thermistor temperature sensor 22 is not heated initially, the resistance value of the temperature sensor 22 will be high. Therefore, the voltage across the resistor 24 is lower than the voltage of the temperature control unit 64c adjusted by the user. Therefore, the controller 52 outputs a "high" signal to the heater driver 65 and the triac 53 of the heater driver 65 is turned on to drive the non-induction heater 51.

As such, when the non-induction heater 51 is driven to lower the resistance value of the thermistor temperature sensor 22 and the voltage applied to the resistor 24 becomes higher than the voltage of the temperature controller 64c controlled by the user. The controller 52 outputs a "low" signal to the heater driver 65, and the triac 53 is turned off to block commercial power applied to the non-induction heater 51. At this time, the output signal of the temperature detector 64a is an analog signal as a temperature proportional potential, and the controller 52 subdivides and reads the temperature proportional potential value.

During the operation as described above, the internal temperature sensing unit 64b has a resistance value of the thermistor 30 varying according to the heat generated inside the electrothermal bedding control device of the present invention configured as described above and the resistance 31 The pressure is divided by the input into the control unit 52.

In addition, the rated current detector 66 is a current value of the heater 51 when the commercial power is supplied to the heater 51 in a series circuit consisting of the heater 51, triac 53 and the resistor 39 Represented by the resistor 39 as a voltage, the voltage across the volume 40 is adjusted to a partial pressure and is input to the controller 52.

In addition, the heater disconnection detecting unit 67 detects a minute voltage divided by the resistors 44 and 45 when the triac 53 of the heater driving unit 65 is in an off state, and inputs it to the controller 52. Let's do it. At this time, if the non-induction heater 51 is disconnected, the minute voltage is not input to the controller 52.

As described above, the controller 52 checks whether the signal is normally operated by inputting a signal from the rated current detector 66, the heater disconnection detector 67, and the internal temperature detector 64b. The heater driving unit 65 is controlled so that power is not applied to the display panel, and the display unit 68 displays the display unit 68 or cuts off the power supply of the commercial power supply unit 61.

For example, the controller 52 does not output a drive signal (“high” signal) to the gate of the triac 53 of the heater driver 65, and if there is a signal from the rated current detector 66. It is determined that the triac 53 is short, the first display unit 68a of the display unit 68 is turned on at an interval of 0.5 seconds, and a high signal is output to the power cutoff unit 69 to supply the commercial power supply unit 61. Let the power supply fuse of) disconnect.

At this time, the gate signal of the triac 53 of the heater driver 65 maintains a low state.

In addition, a driving signal (“high” signal) is applied to the triac 53 gate of the heater driver 65 to supply a commercial power in a series circuit including the heater 51, the triac 53, and the resistor 39. The controller 52 reads the current value flowing through the heater 51 so as to be supplied to the heater 51 to determine whether the rated current is equal to or less than the rated current, or equal to or greater than the rated current.

That is, when an overcurrent is detected, it is determined that the heating line of the non-induction heater 51 is short-circuited, the commercial power is unstable, or it is determined that the overcurrent flows between both ends of the power input, so that the second display unit 68a is 0.2 seconds. Lights up for 2 seconds and turns off for 2 seconds to inform the user of an abnormality, and maintains the gate signal of the triac 53 as a low signal.

In addition, when the rated current is less than or equal to the breakage of the triac 53 of the heater driving unit 65, the first display unit 68a is turned on for 0.5 seconds and turned off for 2 seconds to notify the user repeatedly. The gate signal of 53 is kept low.

In addition, the controller 52 continuously outputs a trigger high signal to the triac 53 gate of the heater driver 65 so that the rated current is normally detected by the rated current detector 66 and at the same time, the temperature sensor 22. ) And the temperature control unit 64c does not control the temperature, and if the non-induction heater 51 continuously generates heat for about 2 hours or more, the controller 52 determines that the heater is out for a long time or the gas is overheated. Only 30% to 50% of the rated power of the triac 53 gate output is forcibly output, and the first display unit 68a is continuously turned on to inform the user.

Therefore, when heating the heater, the heater is short-circuited at any middle for other reasons, when the overcurrent flows, when the overheat leakage current flows between the power input terminals, and the overcurrent due to the voltage fluctuation of the commercial power supply flows. Overheating can be prevented, and the user can set the temperature control setting point of the temperature

If the seat is left for a long time for reasons such as going out, the controller 52 checks the rated maximum power use time to automatically reduce the output.

The determination of short or disconnection of the temperature sensor 22 allows the sensor potential to be set in advance to the control unit 52 to a value near the maximum potential and the minimum potential so that disconnection and short of the sensor can be determined.

In addition, when the drive current (“high” signal) is not output to the triac 53 gate of the heater driving unit 65 and normally operated without a signal in the rated current detecting unit 66, the heater disconnection detecting unit ( It determines whether the signal of 67).

That is, when no voltage is detected by the heater disconnection detecting unit 67, the controller 52 determines that the non-induction heater 51 is disconnected and turns on the second display unit 68b for 1 second and turns off for 2 seconds. Repeat this to inform the user that the heater has been disconnected. At this time, the gate signal of the triac 57 of the heater driver 65 maintains a low state.

In addition, the controller 52 reads a signal from the internal temperature detector 64b and lights up the first display unit 68a at 0.2 second intervals when the temperature of the internal temperature detector 64b is greater than or equal to a set temperature. In order to notify the user, a low signal is output to the triac 53 of the heater driver 65 until the temperature falls below a predetermined temperature, thereby stopping the driving of the heater.

The third display portion 68c of the display portion 68 is continuously turned on when power is supplied to the non-induction heater 51.

In the electrothermal bedding control apparatus of the present invention as described above has the following advantages.

First, since the heater is composed of a magnetic shield coaxial heating line, it is possible to block magnetic and electric fields that may be generated in the heater.

Second, when the power is supplied to the heater or not, the rated current is detected to recognize that the heater is short-circuited to cut off the heating of the heater, thereby preventing the heater from being overheated, and the user may control the temperature of the temperature controller 64c. The output can be automatically reduced by leaving the control setting point at the rated maximum and leaving the seat for a long time due to going out.

Third, the breakdown / short circuit of the heater, the breakdown / short circuit of the heater driving unit, the self-diagnosis and the like to control the heater not to be heated and display the same, thereby reducing the A / S cost.

1 is a block diagram of an electrothermal bedding control device according to the present invention

Figure 2 is a circuit diagram of the electrothermal bedding control device according to the invention

3 is a block diagram of a power cut-off unit and a control unit according to the present invention

4 is a configuration diagram of a heater driving unit, rated current detection unit, heater disconnection detection unit and the control unit of the present invention;

5 is a configuration diagram of a rated current detection unit according to another embodiment of the present invention;

6 is a configuration diagram of a heater driving unit according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

51: non-induction heater 53: triac

52: control unit 61: commercial power supply unit

62: DC power supply 63: AC synchronization signal generator

64: temperature detection and control unit 64a: heater temperature detection unit

64b: internal temperature sensor 64c: temperature controller

64d: reset section 65: heater driving section

66: rated current detector 67: heater short circuit detector

68: display portion 68a: first display portion

68b: second display portion 68c: third display portion

69: power cut off

Claims (8)

A commercial power supply unit having a fuse to supply commercial power, A DC power supply unit for rectifying and smoothing the commercial power using a leakage current of a capacitor to supply DC power to each unit; An AC synchronizing signal generator for outputting an AC power synchronizing signal by half-wave rectifying the commercial power; An induction heater that generates heat by receiving the commercial power; A heater driver for driving the heater by switching commercial power supplied to the non-induction heater; A rated current detector for detecting a current supplied to the non-induction heater; A temperature detection and control unit having at least two thermistor temperature sensors to detect the temperature and the internal temperature of the non-induction heater and allow the user to set the temperature of the heater; A heater disconnection detection unit detecting a heating line disconnection of the non-induction heater; A display unit which displays a state in which the non-induction heater is operating, a failure, and the like; A power cut-off unit for forcibly cutting the fuse of the commercial power supply unit; When it is impossible to control the heater driving unit according to the temperature detection and temperature setting of the temperature detection and control unit and the voltage detected by the rated current detection unit and the heater disconnection detection unit, and control of the power supplied to the non-induction heater is impossible. And a control unit for controlling the power cutoff unit to block the fuse of the commercial power supply unit and to control the display unit. The method of claim 1, The temperature detection and control unit, A heater temperature sensor having a thermistor temperature sensor to detect a temperature of the non-induction heater; An internal temperature sensing unit having a thermistor temperature sensor to sense internal temperature; The apparatus for controlling electrothermal bedding, characterized in that it comprises a temperature control unit for adjusting the temperature to be set by the user to adjust the volume. The method of claim 1, The power cut-off unit comprises a SCR connected to both sides of the commercial power supply voltage terminal, and a diode for applying the output signal of the control unit to the gate terminal of the SCR. The method of claim 1, The heater driving unit includes a triac for turning on / off commercial power supplied to the non-induction heater and a diode for applying an output signal of the controller to a gate terminal of the triac. controller. The method of claim 1, The heater driving unit includes a triac for turning on / off commercial power supplied to the non-induction heater, a transistor turned on / off according to an output signal of the controller, and outputting a DC power, and a DC power output through the transistor. And a diode applied to the gate terminal of the triac. The method of claim 1, The rated current detector is connected between the one terminal of the heater driving unit and the commercial power in parallel, the resistance, the volume and the capacitor is connected to detect the current supplied to the non-induction heater and outputs it to the controller as a voltage value Control device of electrothermal bedding. The method of claim 1, The rated current detector has a current detection transformer for detecting the current of the commercial power supplied to the non-induction heater through the heater driving unit, and a volume for converting the current detected by the current detection transformer into a voltage to output to the control unit Control device for electrothermal bedding, characterized in that configured by. The method of claim 1, The heater disconnection detecting unit has a diode and at least two high resistances connected in series between the non-induction heater and the commercial power supply, so that the voltage divided by the two high resistances when the heater driving unit does not drive the non-induction heater. Detects and outputs to the control unit of the electrothermal bedding control device.