阅读说明：本技术 一种微波炉的控制装置及微波炉 (Control device of microwave oven and microwave oven ) 是由 戚志斌 周钰波 刘存 黄鹏新 冼伟杰 于 2019-10-11 设计创作，主要内容包括：一种微波炉的控制装置及微波炉,包括：定时器、风扇电机、交流电源、磁控管温控器；其中,所述定时器与风扇电机串联在交流电源的两端之间,所述定时器与交流电源之间连接有磁控管温控器。本发明通过优化电路设计,将定时器电机和风扇电机由并联改为串联。当定时器电机因为故障停止运行时,风扇电机也会停止运行,磁控管温控器的温度会立即上升,达到温控器切断温度后,温控器切断电源,微波炉停止工作,从而避免微波炉不正常的持续运行而导致食物有过加热而冒烟起火的风险,以及高压变压器温度过高而引起冒烟起火。(A control device of a microwave oven and the microwave oven comprise: a timer, a fan motor, an alternating current power supply and a magnetron temperature controller; the timer and the fan motor are connected in series between two ends of the alternating current power supply, and the magnetron temperature controller is connected between the timer and the alternating current power supply. The invention changes the parallel connection of the timer motor and the fan motor into the series connection through optimizing the circuit design. When the timer motor stops operating because of the trouble, the fan motor also can the stop operation, and the temperature of magnetron temperature controller can rise immediately, reaches the temperature controller and cuts off the temperature after, temperature controller cutting off power, microwave oven stop work to avoid the microwave oven unusual continuous operation and lead to food to have the overheated risk that the cigarette is smoked to fire, and high-voltage transformer high temperature arouses the cigarette to fire.)

1. A control apparatus of a microwave oven, comprising:

a timer, a fan motor, an alternating current power supply and a magnetron temperature controller; wherein the content of the first and second substances,

the timer and the fan motor are connected in series between two ends of the alternating current power supply, and the magnetron temperature controller is connected between the timer and the alternating current power supply.

2. The control apparatus of a microwave oven as claimed in claim 1,

the device further comprises a turntable motor, and the timer, the fan motor and the turntable motor are sequentially connected in series between two ends of the alternating current power supply.

3. The control apparatus of a microwave oven as claimed in claim 1,

the device further comprises a controller, wherein the timer, the controller and the fan motor are sequentially connected in series between two ends of the alternating current power supply; the first end of the controller is connected with the timer, the second end of the controller is connected with the first end of the alternating current power supply, and the third end of the controller is connected with the second end of the alternating current power supply through the fan motor.

4. The control apparatus of a microwave oven as claimed in any one of claims 1 to 3,

the timer is a double-shaft timer, comprises four terminals and consists of a time switch, a power switch and a timer motor, wherein the timer motor consists of a first terminal and a fourth terminal which form a contact; the time switch is composed of a first terminal and a second terminal which form a contact; the power switch is a contact composed of a third terminal and a second terminal.

5. The control apparatus of a microwave oven as claimed in any one of claims 1 to 3,

the apparatus further comprises: the high-voltage power supply comprises a magnetron, a high-voltage transformer, a high-voltage capacitor, a magnetron, a high-voltage fuse and a high-voltage diode; the high-voltage side of the high-voltage transformer is connected with a high-voltage capacitor and a high-voltage diode, the high-voltage side of the high-voltage transformer, the high-voltage capacitor and the high-voltage diode form a half-wave voltage doubling circuit, the output end of the half-wave voltage doubling circuit is connected with a magnetron, the anode end of the high-voltage capacitor is connected with the anode end of the high-voltage diode and the magnetron, the cathode end of the high-voltage capacitor is connected with the high-voltage side of the high-voltage transformer through a high-voltage fuse, and.

6. The control apparatus of a microwave oven as claimed in claim 5,

the device further comprises a furnace lamp, one end of the furnace lamp is connected to the second terminal of the timer, and the other end of the furnace lamp is connected to the second end of the alternating current power supply and the second end of the low-voltage side of the high-voltage transformer.

7. The control apparatus of a microwave oven as claimed in claim 6,

the first terminal of the timer is connected with the first end of the alternating current power supply, the second terminal of the timer is connected with one end of the furnace lamp and/or the turntable motor, the third terminal of the timer is connected with the first end of the low-voltage side of the high-voltage transformer, and the fourth terminal of the timer is connected with the fan motor or the controller.

8. The control apparatus of a microwave oven as claimed in claim 5,

a primary switch, a filter plate and a monitoring switch are connected between the first terminal of the timer and the first end of the alternating current power supply; and a secondary switch is also connected between the second end of the low-voltage side of the high-voltage transformer and the second end of the alternating current power supply.

9. The control apparatus of a microwave oven as claimed in claim 5,

and the fan motor or the turntable motor is connected with the second end of the alternating current power supply and the second end of the low-voltage side of the high-voltage transformer.

10. A microwave oven comprising the control device of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of mechanical microwave ovens, and particularly relates to a control device of a microwave oven and the microwave oven.

Background

At present, an electric circuit of a mechanical microwave oven generally comprises a timer, a temperature controller, a fan motor, a high voltage transformer, a high voltage capacitor, a magnetron and other elements. After the timer time is set, the circuit is automatically conducted, the microwave oven automatically works, and the microwave oven finishes working until the timer time returns to 0.

Disclosure of Invention

The purpose of the invention is realized by the following technical scheme.

According to the invention, the timer motor and the fan motor are connected in series, so that when the timer motor stops running due to faults such as disconnection, insufficient soldering and the like, the fan motor can also stop running, the temperature of the magnetron temperature controller is rapidly increased until the temperature controller automatically cuts off a power supply, and abnormal continuous work of the microwave oven is avoided.

In order to solve the above problem, a control apparatus for a microwave oven according to an embodiment of a first aspect of the present invention includes: a timer, a fan motor, an alternating current power supply and a magnetron temperature controller; the timer and the fan motor are connected in series between two ends of the alternating current power supply, and the magnetron temperature controller is connected between the timer and the alternating current power supply.

The invention relates to a control device of microwave oven, which changes the parallel connection of timer motor and fan motor into series connection through optimizing circuit design. When the timer motor stops operating because of the trouble, the fan motor also can the stop operation, and the temperature of magnetron temperature controller can rise immediately, reaches temperature controller cut-off action temperature after, temperature controller cutting off power, microwave oven stop work to avoid the microwave oven unusual continuous operation and lead to food to have the overheated risk that smokes and catch fire, and high-voltage transformer high temperature arouses the smoking and catch fire.

In some embodiments, the apparatus further comprises a turntable motor, and the timer, the fan motor, and the turntable motor are sequentially connected in series between two ends of the ac power source.

In some embodiments, the apparatus further comprises a controller, the timer, the controller, and the fan motor being connected in series between the terminals of the ac power source; the first end of the controller is connected with the timer, the second end of the controller is connected with the first end of the alternating current power supply, and the third end of the controller is connected with the second end of the alternating current power supply through the fan motor.

In some embodiments, the timer is a dual-shaft timer comprising four terminals consisting of a time switch, a power switch and a timer motor, wherein the timer motor consists of a contact consisting of a first terminal and a fourth terminal; the time switch is composed of a first terminal and a second terminal which form a contact; the power switch is a contact composed of a third terminal and a second terminal.

In some embodiments, the apparatus further comprises: the high-voltage power supply comprises a magnetron, a high-voltage transformer, a high-voltage capacitor, a magnetron, a high-voltage fuse and a high-voltage diode; the high-voltage side of the high-voltage transformer is connected with a high-voltage capacitor and a high-voltage diode, the high-voltage side of the high-voltage transformer, the high-voltage capacitor and the high-voltage diode form a half-wave voltage doubling circuit, the output end of the half-wave voltage doubling circuit is connected with a magnetron, the anode end of the high-voltage capacitor is connected with the anode end of the high-voltage diode and the magnetron, the cathode end of the high-voltage capacitor is connected with the high-voltage side of the high-voltage transformer through a high-voltage fuse.

In some embodiments, the apparatus further comprises an oven lamp, one end of the oven lamp being connected to the second terminal of the timer, the other end of the oven lamp being connected to the second end of the ac power source and the second end of the low voltage side of the high voltage transformer.

In some embodiments, a first terminal of the timer is connected to a first end of the ac power source, a second terminal of the timer is connected to an end of the oven lamp and/or the turntable motor, a third terminal of the timer is connected to a first end of the low voltage side of the high voltage transformer, and a fourth terminal of the timer is connected to the fan motor or the controller.

In some embodiments, a primary switch, a filter plate and a monitoring switch are further connected between the first terminal of the timer and the first end of the alternating current power supply; and a secondary switch is also connected between the second end of the low-voltage side of the high-voltage transformer and the second end of the alternating current power supply.

In some embodiments, the fan motor or the turntable motor is connected to a second end of the ac power source and a second end of the low voltage side of the high voltage transformer.

In order to solve the above problem, a microwave oven according to an embodiment of the second aspect of the present invention includes the control device according to the embodiment of the first aspect.

The microwave oven changes the parallel connection of the timer motor and the fan motor into the series connection through optimizing the circuit design. When the timer motor stops operating because of the trouble, the fan motor also can the stop operation, and the temperature of magnetron temperature controller can rise immediately, reaches temperature controller cut-off action temperature after, temperature controller cutting off power, microwave oven stop work to avoid the microwave oven unusual continuous operation and lead to food to have the overheated risk that smokes and catch fire, and high-voltage transformer high temperature arouses the smoking and catch fire.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a front view illustrating a structure of a microwave oven according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram illustrating a control apparatus of a microwave oven according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a control apparatus of a microwave oven according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram illustrating a control apparatus of a microwave oven according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The invention controls the fan motor by using the timer motor, when the timer motor stops running due to faults, the fan motor can stop running, and the fan stops running, the temperature of the magnetron temperature controller quickly rises to the cutting-off temperature of the temperature controller and then the power supply of the whole machine is cut off, thereby avoiding the risk of smoking and firing due to overheating of food caused by abnormal continuous running of the microwave oven and the risk of smoking and firing caused by overhigh temperature of the high-voltage transformer.

As shown in fig. 1, the internal structure of the microwave oven of the present invention comprises the following components:

the timer 1: for setting the running time, a timer motor is provided inside. After the time of the timer 1 is set, the timer motor is powered on to operate and drives the timer 1 to slowly return to the time point 0, then the circuit is cut off, and the timer motor stops operating.

The high-voltage transformer 2: the high voltage transformer 2 can output high voltage after the microwave oven is powered on.

High-voltage capacitor 3: the voltage output by the high voltage transformer 2 is multiplied for the magnetron 4 to use.

The magnetron 4: microwave energy is generated and is guided into the cavity 8 of the microwave oven through a waveguide tube so as to realize the function of microwave cooking.

And (5) temperature controller: the temperature of the magnetron 4 is monitored and the power supply of the entire microwave oven is cut off when the temperature of the magnetron 4 exceeds a limit value.

And (6) a fan: for dissipating heat from the high voltage transformer 2, magnetron 4, etc.

A furnace door 7: the door of the microwave oven is opened to place food.

And (3) cavity 8: for forming a cooking space, and placing food in the cavity 8 for cooking.

The following three embodiments describe in detail the control device of the present invention located inside a microwave oven.