KR940018615A - Microwave with automatic door adjuster - Google Patents

Abstract

Microwave ovens with automatic door controls have been disclosed. A door lock / opening device using a permanent magnet and an electromagnet is provided instead of the hook type door lock and the locking portion of the main body. In addition, the door state detection means for detecting the door opening and closing state by using the permanent magnet and the electromagnet instead of a separate mechanical switch is also provided. There is also provided a processing means for controlling the door lock / opening device and the microwave energy generator in response to input signals from the door condition detection means and the door open switch.

Description

Microwave with automatic door adjuster

Since this is an open matter, no full text was included.

1 is a perspective view of a microwave oven implemented in an embodiment of the present invention.

2 is a control circuit diagram of an embodiment of the present invention.

Claims (13)

A main body having a heating chamber capable of receiving a heating object; A door provided at one side of the heating chamber opening; At least one magnetic material provided on one side of the door; At least one electromagnet provided in the main body and in contact with the magnetic material when the door is closed, and connected to the electromagnet, and a door state generating a first signal based on electromotive force generated in the electromagnet when the door is closed or opened; Sensing means; Door opening switch means for generating a second signal when the door opening switch is operated; Processing means for generating a control signal in response to the first and second signals; Door locking and opening means for locking and opening the door in response to the control signal for opening the door by applying a current to the electromagnet in one direction and locking the door and a current in the other direction to the electromagnet; A microwave energy generator for generating energy in the main body; And load driving power switching means for operating the microwave energy generator in response to the control signal. 2. The apparatus of claim 1, further comprising: second processing means for generating a display signal in response to the first signal; Display means for displaying an error symbol in response to the display signal, the error symbol further comprising display means displayed when a corresponding error condition of the door occurs. 2. The apparatus of claim 1, further comprising: second processing means for generating a first control signal display signal in response to the first signal; And alarm means for generating a buzzer sound in response to the second control signal, wherein the buzzer sound is generated when a corresponding error condition of the door occurs. The microwave oven of claim 1, wherein said processing means comprises at least one input / output port, a microprocessor, and a memory. The microwave oven of claim 1, wherein the magnetic material is a permanent magnet or a ferromagnetic material. A main body having a heating chamber capable of receiving a heating object; A door provided at one side of the heating chamber opening; At least one magnetic material provided on one side of the door; At least one electromagnet provided in the main body and in contact with the magnetic material when the door is closed; Door state detection means connected to the electromagnet and generating a signal based on electromotive force generated in the electromagnet when the door is opened or closed; Processing means for generating a control signal in response to the signal; A microwave energy generator for generating energy in the body; And load driving power switching means for operating the microwave energy generator in response to the control signal. 7. The apparatus of claim 6, further comprising: second processing means for generating a display signal in response to the signal; Display means for displaying an error symbol in response to the display signal, the error symbol further comprising display means displayed when a corresponding error condition of the door occurs. 8. The apparatus of claim 6, further comprising: second processing means for generating a second control signal in response to the signal; And alarm means for generating a buzzer sound in response to the second control signal, wherein the buzzer sound is generated when an error condition of the door occurs. 7. The microwave oven of claim 6, wherein said processing means comprises at least one input / output port, a microprocessor and a memory. The microwave oven of claim 6, wherein the magnetic material is a permanent magnet or a ferromagnetic material. A main body having a heating chamber capable of receiving a heating object; A door provided at one side of the heating chamber opening; At least one magnetic material provided on one side of the door; At least one electromagnet provided in the main body and in contact with the magnetic material when the door is closed; Door opening switch means for generating a signal when the door opening switch is operated; Processing means for generating a control signal in response to the signal; Microwave oven including a door lock and opening means for locking the door by flowing a current to the electromagnet in one direction and a current in the other direction to the electromagnet to lock and open the door in response to the control signal for opening the door. . 12. The microwave oven of claim 11, wherein said processing means comprises at least one input / output port, a microprocessor, and a memory. The microwave oven of claim 11, wherein the magnetic material is a permanent magnet or a ferromagnetic material. ※ Note: The disclosure is based on the initial application.