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Control device of microwave oven and microwave oven

A control device, microwave oven technology, applied in microwave heating, electric heating devices, household stoves/stoves, etc., can solve the problems of smoke and fire, food heating, the timer cannot return to time 0, etc., to avoid abnormal continuous effect of work

Active Publication Date: 2020-02-04
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When the quality of the timer is poor, if the timer motor cannot run, the timer cannot return to the time 0, which will cause the microwave oven to continue to run. When there is food in the oven cavity, the food will be overheated and cause the risk of smoke and fire
[0005] 2. During the use of the microwave oven, when the internal motor coil of the timer is disconnected due to vibration and other reasons, the timer motor will stop running and the timer cannot return to time 0, which will cause the microwave oven to continue to run. When there is food in the oven cavity when the food is overheated, there is a risk of smoke and fire
[0006] 3. During the use of the microwave oven, when the connection wire of the internal motor of the timer is soldered due to long-term oxidation of the solder joints, the timer motor will also stop running and the timer cannot return to time 0, which will cause the microwave oven to continue to run. With food in the cavity, there is a risk of overheating of the food causing smoke and fire

Method used

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  • Control device of microwave oven and microwave oven
  • Control device of microwave oven and microwave oven
  • Control device of microwave oven and microwave oven

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 2 As shown, a control device for a microwave oven in this embodiment includes: a timer 1, a high-voltage transformer 2, a high-voltage capacitor 3, a magnetron 4, a magnetron thermostat 5, a fan motor 9, a timer motor 10, Turntable motor 11, oven lamp 12, monitoring switch 13, primary switch 14, secondary switch 15, filter board 16, AC power supply 17, high voltage insurance 18, high voltage diode 19. Timer 1 is a dual axis timer.

[0040] The timer 1 includes four terminals, which are composed of the first timer contact 1 (i.e. the time switch), the second timer contact 2 (i.e. the power switch) and the timer motor 10, wherein the timer motor 10 is composed of the first terminal 1 and the fourth terminal M form a contact; the first timer contact 1 (ie, the time switch) is composed of the first terminal 1 and the second terminal 2; and the second timer contact 2 (ie, the power switch) is formed by The third terminal 3 and the second terminal 2 form con...

Embodiment 2

[0047] Such as image 3 As shown, a control device for a microwave oven in this embodiment includes: a timer 1, a high-voltage transformer 2, a high-voltage capacitor 3, a magnetron 4, a magnetron thermostat 5, a fan motor 9, a timer motor 10, Turntable motor 11, oven lamp 12, monitoring switch 13, primary switch 14, secondary switch 15, filter board 16, AC power supply 17, high voltage insurance 18, high voltage diode 19. Timer 1 is a dual axis timer.

[0048] The timer 1 includes four terminals, which are composed of the first timer contact 1 (i.e. the time switch), the second timer contact 2 (i.e. the power switch) and the timer motor 10, wherein the timer motor 10 is composed of the first terminal 1 and the fourth terminal M form a contact; the first timer contact 1 (ie, the time switch) is composed of the first terminal 1 and the second terminal 2; and the second timer contact 2 (ie, the power switch) is formed by The third terminal 3 and the second terminal 2 form a co...

Embodiment 3

[0055] Such as Figure 4 As shown, a control device for a microwave oven in this embodiment includes: a timer 1, a high-voltage transformer 2, a high-voltage capacitor 3, a magnetron 4, a magnetron thermostat 5, a fan motor 9, a timer motor 10, Turntable motor 11, furnace lamp 12, monitoring switch 13, primary switch 14, secondary switch 15, filter board 16, AC power supply 17, high voltage insurance 18, high voltage diode 19, controller 20. Timer 1 is a dual axis timer. The controller 20 can be implemented by a single-chip microcomputer, FPGA and the like. The first terminal of the controller 20 is connected to the M terminal of the timer 1 , the second terminal is connected to the first terminal of the AC power supply 17 , and the third terminal is connected to the second terminal of the AC power supply 17 through the fan motor 9 .

[0056] Wherein, the first terminal 1 of the timer 1 is connected to the first end of the AC power supply 17, the second terminal of the timer...

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PUM

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Abstract

The invention relates to a control device of a microwave oven and the microwave oven. The control device comprises a timer, a fan motor, an alternating current power supply and a magnetron temperaturecontroller, wherein the timer and the fan motor are connected in series between the two ends of the alternating current power supply; and the magnetron temperature controller is connected between thetimer and the alternating current power supply. By optimizing circuit design, parallel connection between a timer motor and the fan motor is changed to series connection. When the timer motor stops running due to a fault, the fan motor also stops running, the temperature of the magnetron temperature controller rises immediately, and after the cut-off the temperature of the temperature controlleris reached, the temperature controller cuts off the power supply and the microwave oven stops working, so that the risk that food is overheated to cause smoke and fire due to abnormal continuous running of the microwave oven and the situation that the smoke and fire are caused by the overhigh temperature of a high-voltage transformer are avoided.

Description

technical field [0001] The invention belongs to the technical field of mechanical microwave ovens, and in particular relates to a control device for a microwave oven and the microwave oven. Background technique [0002] At present, the electrical circuit of a mechanical microwave oven is generally composed of components such as a timer, a temperature controller, a fan motor, a high-voltage transformer, a high-voltage capacitor, and a magnetron. When the timer time is set, the circuit will be automatically turned on, and the microwave oven will work automatically until the timer time returns to 0 and the microwave oven will stop working. [0003] In the electrical circuit of the prior art, the timer motor and the fan motor are connected in parallel, which has the following defects: [0004] 1. When the quality of the timer is poor, if the timer motor cannot run, the timer cannot return to the time 0, which will cause the microwave oven to continue to run. When there is food ...

Claims

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Application Information

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IPC IPC(8): H05B6/66H05B6/68H05B6/64F24C7/02
CPCH05B6/666H05B6/681H05B6/642F24C7/02
Inventor 戚志斌周钰波刘存黄鹏新冼伟杰
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD