KR101529116B1 - An apparatus of controlling overheating protection of gas cooktop for extending life of its battery and the method thereof - Google Patents

Abstract

The present invention relates to an apparatus and a method for controlling overheating protection of gas cooktop for extended life of a gas cooktop battery, and comprises: a battery; a switch for each burner that is turned on/off by a corresponding ignition switch; a printed circuit board which receives power from the battery; a Micom which is installed on the printed circuit board; and a burner sensing part which connects or blocks power of the battery supplied to the printed circuit board, wherein the burner sensing part is mounted between the battery and the printed circuit board or the Micom and includes a blocking circuit that connects or blocks battery power and a burner sensing circuit which receives on/off signals from the switch of each burner and connects the blocking circuit upon receiving signals from one of the burner switches. The apparatus is located between the blocking circuit and the printed circuit board or the Micom and includes a DC-DC converter which converts power supplied by the blocking circuit and supplies converted power to the printed circuit board or the Micom. The apparatus and the method for controlling overheating protection of the gas cooktop prevents frequent replacement of the battery for greater user convenience as well as battery life extension by blocking the power supply of the battery when none of the burners are in use.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-cut control system and a control method of a gas cooktop for extending battery life,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a high-cut control system and a control method of a gas cooktop that cuts off a battery that supplies power to an overheat-preventing control device when all the power switches of the respective fireboxes are turned off in a gas cooktop provided with multiple fireplaces.

Generally, a cooking cooker is a kitchen appliance for cooking food in a state where a person can take food by heating the food by using gas. Such a cooking appliance is a method of generating heat for heating food by using electricity , And a method of generating heat for heating food by burning gas.

A method of generating heat for cooking food by burning gas is a heat generated by the combustion of a gas mixture of gas and air. The container containing the food to be cooked is heated to cook food.

A cooktop system of a cooking appliance (for example, a gas range or the like) operated by a method of burning a gas is installed such that a burner burner is exposed to the outside, and a pedestal of the cooking vessel is installed around the burner at regular intervals. A gas supply source for supplying a gas or propane gas to the gas cooktop, and a valve for controlling the supply of gas from the gas supply source to the cooktop. Therefore, if the ignition switch is turned while the ignition switch of the cooktop is pressed while the valve is being opened, the cooktop can be ignited.

In such a gas cooktop, a high cut control system is provided to provide an automatic cooking function through thermal power control (or time adjustment) in a high cut mode, or to provide a burner control for preventing overheating or a function for interrupting a burner burn.

That is, a temperature sensor is attached to the burner of the gas cooktop, and the high cut control system is used to control temperature by controlling the thermal power adjusting device in a mode such as high-cut automatic cooking by receiving the temperature from the attached temperature sensor [Patent Document 1]. When the temperature rise of the cooking container detected through the temperature sensor becomes small, the equilibrium state is determined and the equilibrium temperature is calculated. Further, the cut-off temperature is calculated based on the equilibrium temperature, When the cut-off temperature is reached, the suppression such as extinguishing the gas burner is controlled [Patent Document 2].

Meanwhile, the high-cut control system includes a temperature sensor (or a high-cut sensor), a microcomputer, a PCB substrate provided with the microcomputer and a control circuit, and is driven by receiving power from a battery. According to the related art, when the crater is one, if the crater, that is, the burner is not used, the power of the battery can be cut off and controlled.

1, the conventional high-cut control system 1 includes a microcomputer 2 and a PCB substrate 3 equipped with a microcomputer 2 and a control circuit for performing high-cut control . And a battery 4 for supplying power to the microcomputer 2 and the PCB substrate 3 are connected. Between the battery 4 and the microcomputer 2, a physical microswitch 5 is provided. The micro switch 5 is interlocked with an ignition switch for igniting the cooktop, and the microswitch 5 is also physically turned on / off according to the on / off state of the ignition switch.

Therefore, the battery 4 is connected to the microcomputer 2 or the PCB substrate 3 only when the burner burner is used, thereby consuming the power of the battery 4. Therefore, if the crater is not used, the power of the battery 4 is cut off, and the life of the battery 4 can be extended for a longer time.

However, according to the prior art as shown in FIG. 1, it is possible to extend the service life of the battery by applying a single crater, but if two or more craters are provided in the gas cooktop, Lt; / RTI > That is, when the ignition switch of one crater is turned off, the power of the battery can not be cut off. This is because the ignition switch of another crater may be on and used. Therefore, the power of the battery can not be disconnected, and it must be continuously connected to the microcomputer 2 or the PCB substrate 3. In this case, since there is a standby current, the power of the battery is consumed.

Especially, when more than 2 craters are used, a sensor for preventing overheating such as a temperature sensor should be installed for each crater, and a more complicated control circuit is required because each crater must be sensed and controlled. Also, the microcomputer has to perform a lot of calculations. Therefore, more control is required to increase the number of fireplaces compared to when one fireplace is used, and more batteries are consumed. Therefore, the consumption of the battery is larger than that in the case of using one crater, which may cause inconvenience of frequent replacement of the battery.

[Patent Document 1] Korean Published Patent Application No. 2010-0012389 (Published on Mar. 02, 2010) [Patent Document 2] Korean Published Patent Application No. 2011-0045527 (Published May 4, 2011)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to independently control all telephone ports of a gas cooktop, And to provide a high cut control system and a control method of a gas cooktop which is capable of reducing power consumption and battery consumption.

It is another object of the present invention to provide a high cut control system and a control method for a gas cooktop which improves the battery life by controlling whether or not the battery is blocked in terms of hardware as well as software.

To achieve the above object, the present invention provides a high cut control system for a gas cooktop, comprising: a battery; A plurality of air conditioner switches corresponding to the respective air conditioners and turned on / off according to the ignition switches of the respective air conditioners; A PCB for receiving power from the battery; a microcomputer provided on the PCB substrate; And an etch detector for receiving an ON / OFF signal from the switch for each display and for connecting or disconnecting power of a battery supplied to the PCB substrate.

According to another aspect of the present invention, there is provided a high cut control system for a gas cooktop, comprising: a cutoff circuit provided between the battery and the PCB substrate or the microcomputer and capable of connecting or disconnecting battery power; And an erection detecting circuit for receiving the ON / OFF signal from the switch for each screen and for connecting the blocking circuit when a signal from at least one screening switch is received.

Further, the present invention provides a high-cut control system for a gas cooktop, wherein the control system is disposed between the shut-off circuit and the PCB substrate or the microcomputer to convert an input voltage applied from the shut- And a DC-DC converter for outputting to the microcomputer.

The present invention also provides a high cut control system for a gas cooktop, wherein the shut-off circuit is comprised of a transistor and the collector of the transistor is connected to the battery, the emitter is connected to the PCB substrate, And is connected to an output signal of the circuit.

Further, the present invention is characterized in that in the high cut control system of the gas cooktop, the cut-off circuit is composed of a transistor or a field effect transistor (FET).

In the high cut control system of the gas cooktop according to the present invention, the microcomputer checks the ignition state of each fire wall with the signal of each fire wall-specific switch, and blocks the shutoff circuit when the ignition state of all fireboxes is off .

According to another aspect of the present invention, in the high cut control system of the gas cooktop, the microcomputer receives a signal of the switch for each screen by means of the perimeter detection circuit.

According to another aspect of the present invention, in the high cut control system of the gas cooktop, the microcomputer checks the input voltage of the battery and generates an alarm signal when the input voltage falls below a predetermined minimum voltage.

Further, the present invention is characterized in that in the high cut control system of the gas cooktop, the above-mentioned perforated circuit is constituted by an OR circuit or a NAND circuit.

The present invention also relates to a high cut control method of a gas cooktop that connects or disconnects a power supply of the battery by a PCB substrate supplied with power from a battery and a microcomputer provided on the PCB substrate, A step of turning on at least one of the plurality of image sorting switches corresponding to each of the plurality of image sorting switches which are turned on / off according to the ignition switches of the respective fireboxes; (b) supplying battery power to the PCB substrate or the microcomputer by connecting a cutoff circuit of the battery when at least one switch for each screen is turned on; (c) the microcomputer is operated by the battery power source and confirming whether the on / off state of the switch for each picture or picture is ON or OFF; (d) the microcomputer opens or closes the valve of the firebox according to the on / off state of the switch for each fire block, and performs or blocks the fire block; (e) the microcomputer measures an input voltage of the battery and confirms whether the voltage is equal to or less than a predetermined minimum voltage; And (f) when the microcomputer determines that the input voltage is equal to or less than the minimum voltage, generating a low battery signal.

Further, the present invention is characterized in that in the high cut control method of the gas cooktop, the cut-off circuit is composed of a transistor or an FET transistor.

As described above, according to the high cut control system and the control method of the gas cooktop according to the present invention, even if the gas cooktop has two or more craters, when the entire crater is not used, the power supply of the battery is cut off, The battery can be prevented from being replaced frequently, and the convenience of the user can be improved.

1 is a block diagram of a configuration of a high cut control system of a gas cooktop according to the prior art;
2 is a block diagram of an arrangement of a high cut control system of a gas cooktop according to an embodiment of the present invention;
3 is a flow chart illustrating a method of controlling a high cut of a gas cooktop according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

In the description of the present invention, the same parts are denoted by the same reference numerals, and repetitive description thereof will be omitted.

First, a high cut control system of a gas cooktop for extending battery life according to an embodiment of the present invention will be described with reference to FIG.

2, the high cut control system 10 of the gas cooktop according to an embodiment of the present invention includes a battery 11, a switch 12, a PCB substrate 20, a microcomputer 21, a DC -DC converter 22, and a crater detector 30.

The battery 11 supplies power to the microcomputer 21 and the PCB substrate 20.

The individual switch 12 is a physical micro switch, and is a switch for selecting a gas cooktop. Or the ignition switches of the gas cooktop are interlocked with each other, and the switch for each of the fireboxes is also physically turned on / off according to the on / off states of the ignition switches of the respective fireboxes. Alternatively, as another embodiment, the switch for each section may be constituted by an ignition switch of each crane.

The switch for each stage is composed of one micro-switch corresponding to each crane. The example of FIG. 2 is an example of a gas cooktop having three fireplaces, and three firebox switches 12 corresponding to each firebox are provided.

The PCB substrate 20 is a conventional PCB (Printed Circuit Board) substrate having a microcomputer 21, a perforated area sensing unit 30, and an input / output circuit (not shown) for high cut control of the gas cooktop.

The input / output circuit (not shown) is constituted by an input circuit for receiving a result sensed by a high-cut sensor such as a temperature sensor provided in each crater or an output circuit for outputting a control command (control signal) for controlling the magnetic switch . The magnetic switch is a switch for controlling a burner valve of each crater, and is a switch for blocking the burner of the crater or adjusting the thermal power of the burner.

The microcomputer 21 may be a microprocessor driven by a program stored in advance or a dedicated processor implemented in an application specific integrated circuit (ASIC) or the like for controlling the respective cookers of the gas cooktop in the high cut mode .

The microcomputer 21 is connected to the input / output terminal of the microcomputer 21 through its input / output circuit, and senses the state of each gas inlet of the gas cooktop through the input / output circuit, controls the burner valves of each gas inlet Respectively.

The crater detecting unit 30 includes a crater detecting circuit 31 for detecting the on / off of each crater and a blocking circuit 32 for shutting off the battery power.

The crane detection circuit 31 is connected to the crane switch 12 of each crane, and can receive a signal indicating whether the micro switches of the craters are turned on / off. That is, when the switch for each screen is turned on and a current flows from the battery 11, it is detected that the corresponding crane is turned on.

The cutoff circuit 32 is a switch circuit located between the battery 11 and the power source of the microcomputer 21 or the PCB substrate 20. When the switch circuit is turned on, The power of the battery is cut off. The power source of the battery 11 supplies power to the microcomputer 21 or the DC-DC converter 22 through the PCB substrate 20 or supplies power to the microcomputer 21 for convenience of explanation Explain.

Meanwhile, the blocking circuit 32 is implemented by a transistor, a field effect transistor (FET), or the like. Accordingly, the battery 11 is always applied to the PCB 20, and the PCB is operated only through the transistor or the FET.

That is, in the transistor of the blocking circuit 32, the collector portion is connected to the battery 11 power source and the emitter portion is connected to the PCB substrate 20 (or DC-DC converter). The output signal of the crane detection circuit 31 is connected to the base. Therefore, when an On signal is applied to the base from the crack detection circuit 31, the power of the battery 11 is supplied to the PCB substrate 20. In addition, if no signal is input from the crack detecting circuit 31 (or an OFF signal is applied), the power of the battery 11 supplied to the PCB substrate 20 is cut off.

The cut-off detection circuit 31 turns on the switch of the cut-off circuit 32 when an ON signal is inputted from any one of the switches of the plurality of sorting switches 12 connected thereto. If no on signal is inputted from all the flashing switches 12, the blocking circuit 32 is turned off to shut off the power supply of the battery. The crane detection circuit 31 can be realized by a logic circuit such as an OR circuit or a NAND circuit, etc.,

The crane detecting unit 30 operates the battery by connecting the battery to the PCB 20 or the microcomputer 21 only when the crane is selected, that is, when the crane is attempted to be ignited. Circuitly shut off the battery.

On the other hand, the signal of the switch for each stage entering the perigee sensing circuit 31 is transmitted to the microcomputer 21. The microcomputer 21 receives the signal of the switch for each display section 12, and can confirm whether or not the ignition switch of each firebox is turned on.

Therefore, the microcomputer 21 can independently control the high cut mode only for the operating craters. That is, the microcomputer 21 accepts input only to the high cut sensor (temperature sensor) of the ignited crane, or sends a control signal only to the valve of the ignited crane.

The DC-DC converter 22 is a typical DC-DC converter that converts a given DC voltage (DC voltage) into a desired DC voltage. The DC-DC converter 22 is provided between the circuit breaker circuit 32 of the crack detection circuit 30 and the microcomputer 21 So as to supply power to the microcomputer 21 in a stable manner.

The DC-DC converter 22 allows the battery 11 to be used until it goes down to the low voltage of the component operation limit of the high cut control system 10. [ Also, even if the voltage of the battery 11 is lowered, the voltage supplied to the microcomputer 21 is always the same.

For example, a case of implementing a 3.3-V DC-DC converter as the DC-DC converter 22 will be described. In this case, when the input voltage is 0.8 V or more, the output voltage is always 3.3 V at the same time. The input voltage reference of 0.8 V may vary depending on the characteristics of the component being implemented.

Also, if the input of the DC-DC converter 22 is low, the voltage stability due to the load can be varied. That is, a fluctuation phenomenon may appear in the output voltage. Therefore, it is desirable to limit the use to an appropriate input voltage (hereinafter referred to as minimum input voltage).

That is, when the input voltage of the DC-DC converter 22 falls below a predetermined minimum input voltage, the power supply of the battery 11 is notified and the operation is stopped.

Next, a method of controlling the high cut of the gas cooktop according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 3, the high cut control method of the gas cooktop according to the present invention comprises the steps of: (a) turning on the discrimination switch S10, (b) applying power to the control system S20, (D) a step S40 of shutting off the valve of the firebox if the firebox switch is not on, (e) if at least one firebox switch is on, checking the on- (F) checking whether the input power of the battery is below a minimum voltage (S60), (g) outputting a low battery signal if the voltage is below a minimum voltage (S70) do.

First, when the user turns on the ignition switch of the firebox, the switch 12 for each firebox is turned on (S10).

When the switch for each fire block is turned on, it detects that at least one fire wall is in an on state in the fire wall detection circuit 31 of the fire wall detection unit 30 and connects the shutoff circuit 32 to the high- And power is applied (S20). That is, the power of the battery 11 is applied to the PCB substrate 20 or the microcomputer 21.

When the power is supplied to the microcomputer 21, the microcomputer operates and the microcomputer 21 confirms the signal of the firebox that the switch is turned on through the fire detection unit 30 (S30).

When it is confirmed that the switch for each fire block is turned on in at least one fireplace, the valve of the fire block is opened and an ignition stroke is performed (S50). If the switch for each screen is not in the ON state, the valve in the corresponding fire wall is shut off (S40).

Then, the voltage of the battery 11 is checked and it is checked whether it falls below a predetermined minimum voltage (S60). At this time, it is determined whether the voltage of the battery continues for a certain period of time to fall below the minimum voltage, and it is determined that the battery power is insufficient only for a certain period of time. Preferably, the minimum voltage is set at 2V and the duration is set at 10 seconds.

The reason for confirming that the voltage drops below the minimum voltage for a predetermined minimum duration is to avoid being affected by the instantaneous voltage drop due to the load operation. That is, the voltage may temporarily drop during the ignition operation of the crater.

If the voltage of the battery 11 falls below the minimum voltage, a signal indicating the battery power shortage is output (S70). Preferably, a buzz alarm sound is output in one shot. Alarm sound The alarm signal is a signal indicating that the battery is insufficient to replace or charge the battery.

The invention made by the present inventors has been described concretely with reference to the embodiments. However, it is needless to say that the present invention is not limited to the embodiments, and that various changes can be made without departing from the gist of the present invention.

10: High-cut control system 11: Battery
12: Switch according to picture type 20: PCB substrate
21: Microcomputer 22: DC-DC converter
30: Culvert detection unit 31: Culvert detection circuit
32: Blocking circuit

Claims (11)

In a high cut control system of a gas cooktop,
battery;
A plurality of air conditioner switches corresponding to the respective air conditioners and turned on / off according to the ignition switches of the respective air conditioners;
A PCB for receiving power from the battery; a microcomputer provided on the PCB substrate; And
And an etch detector for receiving an ON / OFF signal from the switch for each display and connecting or disconnecting power of a battery supplied to the PCB substrate,
The above-
A blocking circuit provided between the battery and the PCB substrate or the microcomputer and capable of connecting or disconnecting battery power; And
And an open circuit detecting circuit for receiving the ON / OFF signal from the switch for each display and for connecting the blocking circuit when a signal from at least one switch for each screen is received,
The control system includes:
And a DC-DC converter disposed between the circuit board and the microcomputer for converting an input voltage applied from the isolation circuit and outputting the converted voltage to the PCB substrate or the microcomputer. High Cut Control System.
delete delete The method according to claim 1,
Wherein the isolation circuit is comprised of a transistor, the collector of the transistor is coupled to the battery, the emitter of the transistor is coupled to the PCB substrate, and the base of the transistor is coupled to the output signal of the perimeter sensing circuit Gas cooktop high cut control system.
5. The method of claim 4,
Characterized in that the transistor comprises a field effect transistor (FET).
The method according to claim 1,
Wherein the microcomputer confirms the ignition state of each fire wall with the signal of each fire wall-specific switch, and cuts off the shutoff circuit when the ignition state of all fireboxes is off.
The method according to claim 6,
Wherein the microcomputer receives the signal of the switch for each display section through the fire detection circuit.
The method according to claim 1,
Wherein the microcomputer checks an input voltage of the battery and generates an alarm signal when the input voltage falls below a predetermined minimum voltage.
The method according to claim 1,
Wherein the crane detecting circuit is constituted by an OR circuit or a NAND circuit.
delete delete

Images