KR900005048Y1 - Control circuit of muti-function cooker - Google Patents

Abstract

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Description

Function Selection Circuit of Combined Cooker

1 is a circuit diagram according to the present invention.

FIG. 2 is a diagram showing waveforms for explaining the operation of the latch portion 2 of FIG.

3 is a reference perspective view of a hybrid cooking appliance according to the present invention.

* Explanation of symbols for main parts of the drawings

1: power supply part 2: latching part

3: cooking function selection unit 4: relay driving unit

5: relay unit 6: induction heating cooker

7: microwave

The present invention is a complex cooking appliance integrating a heat cooker and a microwave oven, a high frequency induction heating cooker, which is advantageous for cooking equipment because of its high thermal efficiency, so that one cooking device can be easily selected according to the container and cooking method used for cooking. It relates to a function selection circuit that can be.

In general, it has the advantages of stability, cleanliness and heat efficiency compared to the cooking utensils used in the kitchen, and selects the function of the combined cooking appliances used by integrating the induction heating cooker and the microwave which are widely used as cooking utensils of the modern society. As a means, a mechanical selection device has not been devised, but since this requires the use of a power switch in consideration of the contact capacity of the mechanical selection device, a considerable force must be applied, and the reliability of the contact point and the operation of the combined cooker at the same time are not allowed. In this case, there is a disadvantage that a risk may occur due to the capacity of the current.

Therefore, the present invention devised to solve the above-mentioned shortcomings, and provides a circuit in which a user can easily select a desired cooking function according to a container and a cooking method used for cooking a hybrid cooking apparatus. There is a purpose.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a function selection circuit diagram of a hybrid early stage device according to the present invention, the power supply unit 1 is a bisistor (ZNR), a capacitor (BNR) for blocking voltage induced on the secondary side of the power transformer (TN) and the transformer (TN) C ₁ -C ₃ ), a regulator (RGT) and a half-wave rectifier diode (D ₁ ).

The latch unit 2 is a resistor (R ₁ ) (R ₂ ), JK type to drive the relay driver (4) to be described later in accordance with the operation of the switch (SW ₁ ), (SW ₂ ) of the cooking function selection unit (3) It consists of a flip-flop (FF).

The cooking function selection unit 3 is configured by a switch SW ₁ (SW ₂ ) so that a user selects a desired cooking function.

The relay driver 4 receives the data output from the latch unit 2 to the resistors R _3- R ₆ and the transistors Q ₁ and Q ₂ to drive the relays RY ₁ and RY ₂ . It is composed.

The relay unit 5 is configured to select the induction heating cooker 6 and the microwave 7 according to the operation of the relay driver 4 and the relay RY ₁ , RY ₂ , and condenser C ₄ , C ₅ , and It consists of a diode D ₂ (D ₃ ).

FIG. 2 is a diagram showing waveforms for explaining the operation of the latch unit 2 in FIG.

3 is a reference perspective view of the hybrid cooking appliance according to the present invention, A is the induction, the top plate of the heating cooker, B is the body C is the output display of the induction heating cooker D is the output control unit of the induction heating cooker, E is a microwave oven Is the selector switch, F is the induction heating cooker selection switch, G is the timer switch, H is the microwave oven indication, I is the microwave start switch, J is the time display, and K is the microwave door.

Referring to the circuit operation of the present invention having the configuration as described above with reference to the output waveform diagram of Figure 2 as follows.

First, when the user wants to select the function of the induction heating cooker and describes the circuit operation when the switch SW ₁ of the cooking function selection unit 3 is turned on, the reset terminal of the JK flip-flop FF ( When the switch SW ₁ is "on" while the "high" voltage output from the power supply unit 1 is applied to the R and the clear terminal CR through the resistors R ₁ and R ₂ respectively, FIG. Like the waveform of R, the pulse-down edge is applied to the reset (R) terminal of the JK flip-flop (FF) at time t ₁ , so that the output terminal (Q) of the JK flip-flop (FF) is the same as Q of FIG. The "high" waveform is output, and the output terminal Q is outputted as a "low" waveform such as Q in FIG.

Accordingly, since the transistor Q ₁ is "on", the relay RY ₁ operates to turn on the switch SW ₃ , so that the induction heating cooker 6 operates.

The following describes the circuit operation when the user "turns on" the switch SW ₂ of the cooking function selection unit 3 to select the function of the microwave 7, and resets the JK flip-flop FF. When the switch SW ₂ is turned "on" while the "high" voltage is applied to the terminal R and the clear terminal CR, the clear terminal CR of the JK flip-flop FF has the CR waveform of FIG. t ₃ is the down-edge pulse at the time because JK flip-flop (FF) is cleared and the output terminal (Q) in the second at t ₃ time, such as 2 degrees Q "high" is a pulse, the output transistor (Q ₂₎ base Since it is applied to the terminal, the transistor Q ₂ is "on" and the relay RY ₂ is operated so that the switch SW ₄ is "on" so that the user selects the desired function of the microwave 7.

According to the present invention operating as described above, there is an advantage that one cooking apparatus can be easily selected by a simple switch operation according to a container and a cooking method used for cooking a complex cooking appliance.

Claims (1)

A latch unit 2 composed of resistors R ₁ , R ₂ , and JK flip-flop FF to be latched according to the selection of the cooking function selection unit 3, and output from the latch unit 2. Receives data and drives relays (RY ₁ ) (RY ₂ ) to relay the drive unit consisting of resistors (R ₃ -R ₆ ) and transistors (Q ₁ ) (Q ₂ ) to select the desired function of the combined cooker. (4) a function selection circuit for a composite cooking appliance, comprising: and the like.