CN219328123U - Microwave plasma kitchen range device - Google Patents

Abstract

The utility model provides a microwave plasma kitchen range device, which comprises a kitchen range panel and further comprises: the microwave plasma module comprises a microwave generator, a microwave resonant cavity and a discharge tube, wherein the microwave resonant cavity is fixedly arranged at the bottom of the cooking top plate, the microwave generator is arranged at the lower side of the microwave resonant cavity, the discharge tube is arranged at one end, far away from the microwave generator, of the microwave resonant cavity, and an excitation area is arranged in the discharge tube. And the power supply module is electrically connected with the microwave generator and used for controlling output power. And the air supply module is connected with the discharge tube and is used for supplying air flow into the discharge tube. The control module comprises an optical sensor, a thermal sensor, a relay, a buzzer and a fault indicator lamp and is used for realizing intelligent control and safety protection on the microwave plasma kitchen range device.

Description

Microwave plasma kitchen range device

Technical Field

The utility model relates to the technical field of microwave plasmas, in particular to an electric fire cooker with overheat protection and uniform flame.

Background

The most commonly used household and commercial cooktops in the market at present are gas cooktops. The fuel of the gas stove is combustible gas, and the fuel is burnt by the combustible gas to heat food, and the combustible gas mainly comprises natural gas, artificial gas, liquefied petroleum gas and the like.

The combustible gas has the defects of inflammability and explosiveness, incomplete combustion can also occur when the air supply of the gas stove is insufficient, toxic gas such as carbon monoxide is generated, the potential safety hazard is great for users, the gas is also leaked, and once leakage occurs, safety accidents such as severe explosion can occur. Meanwhile, in the normal combustion process of the fuel gas, carbon dioxide can be generated, and carbon emission is increased.

In recent years, plasma cooktops have been studied in an attempt to replace gas cooktops. The plasma kitchen range only needs to consume electric energy to generate a large amount of heat, and carbon dioxide can not be generated in the use process of the plasma kitchen range, so that the problem of carbon emission in China is greatly solved.

The prior Chinese patent application document with the application number of CN201720983376.8 discloses a plasma kitchen range device. The type of plasma used is arc plasma, the arc plasma needs an electrode to be excited, and the arc plasma can continuously ablate the electrode in the excitation process, so that the service life of the kitchen range is not long. And because the electrode of the arc plasma is exposed outside, the potential safety hazard is also great.

In addition, the Chinese patent application document with the application number of CN201810936519.9 discloses a microwave plasma burner device. Compared with arc plasma, the microwave plasma has the advantages that electrodes are not needed, the problem of electrode ablation is avoided, the microwave plasma cooker is small in size, convenient and quick to use, and high temperature can be generated in a short time. However, the technology is still in the primary stage, the design is simple and crude, the generated plasma torch is a single torch, the high-temperature area is very concentrated, and the heating is extremely uneven.

Disclosure of Invention

The utility model provides a microwave plasma kitchen range device with homogenization, intelligence, high power and high heat efficiency, which solves the problems of concentrated high temperature area, uneven heating and the like in the prior art.

The utility model provides a microwave plasma kitchen range device, which comprises a kitchen range panel and further comprises: the microwave plasma module comprises a microwave generator, a microwave resonant cavity and a discharge tube, wherein the microwave resonant cavity is fixedly arranged at the bottom of the cooking top plate, the microwave generator is arranged at the lower side of the microwave resonant cavity, the discharge tube is arranged at one end, far away from the microwave generator, of the microwave resonant cavity, and an excitation area is arranged in the discharge tube; the power supply module is electrically connected with the microwave generator and used for controlling output power; and the air supply module is connected with the discharge tube and is used for supplying air flow into the discharge tube.

According to an embodiment of the present utility model, the microwave plasma module is plural, and the power supply module includes: a power controller; the power supply is used for supplying power to the microwave plasma module, and the power controller is used for controlling the output of power supply power, so that the advantages of practicality, convenience and high integration are achieved.

According to an embodiment of the present utility model, an air supply module includes: an air pump; the microwave plasma device comprises a microwave plasma module, a plurality of parallel flowmeters, an air pump, a flowmeter, a discharge tube, a gas pump and a control device, wherein each flowmeter is communicated with the discharge tube in the microwave plasma module, the air pump is used for generating gas, and the flowmeter is used for controlling the flow of the gas output by the air pump, so that the microwave plasma device has the advantages of practicality, convenience and high integration.

According to the embodiment of the utility model, the gas in the air pump is air, nitrogen, argon or helium, so that the beneficial effects of practicality, convenience and low cost are achieved.

According to the embodiment of the utility model, the bottom of the discharge tube is provided with the air inlet, and air flow controlled by the flowmeter enters the discharge tube through the air inlet, so that air is easier to contact with microwave plasma to generate a torch.

According to the embodiment of the utility model, the lower side of the microwave resonant cavity close to the microwave generator is thicker, and the side of the microwave resonant cavity far away from the microwave generator is thinner, so that the beneficial effect of improving the excitation success rate is realized.

According to the embodiment of the utility model, the discharge tubes in the plurality of microwave plasma modules are uniformly distributed along the circumferential direction, so that the beneficial effect of uniform heating is achieved.

According to the embodiment of the utility model, the discharge tube is a multi-pass discharge tube, so that the beneficial effect of uniform heating is realized.

According to the embodiment of the utility model, the discharge tube is a quartz discharge tube or a ceramic discharge tube, so that the beneficial effects of easy transmission of microwaves and high temperature resistance are achieved.

According to an embodiment of the utility model, further comprising a control module comprising: the light sensor is arranged outside the discharge tube and is used for detecting whether the discharge tube forms a torch or not; the thermal sensor is arranged in the middle of the discharge tubes uniformly distributed along the circumferential direction and is used for detecting the bottom temperature of the cooker during normal operation and guaranteeing the safety of a user during the use process.

According to an embodiment of the utility model, the control module further comprises: the relay is arranged in the cooking top plate and used for controlling the opening and closing of the microwave generator, so that the beneficial effect of ensuring the safety of the device is achieved.

According to an embodiment of the utility model, the control module further comprises: the buzzer and the fault indicator lamp are arranged on the cooking top plate, the buzzer is used for giving out alarm sounds, and the fault indicator lamp is used for fault display, so that the beneficial effects of guaranteeing the safety of a user in the use process are achieved.

According to the embodiment of the utility model, the cooking top plate is provided with the plurality of pot supports, and the periphery of the plurality of pot supports is provided with the wind shield, so that the beneficial effects of reducing heat escape and improving heat efficiency are achieved.

According to the embodiment of the utility model, the plurality of pot supports are uniformly distributed along the circumferential direction, so that the beneficial effects of supporting the kitchen range, facilitating temperature detection and providing heat are achieved.

According to the embodiment of the utility model, the cooking top plate is also provided with the rotary knob, the rotary knob is connected with the power controller, and the power controller is controlled to control the power output by the power sources, so that the operation is simple, and the beneficial effect of providing good experience for users is achieved.

According to the embodiment of the utility model, the button switch is also arranged on the cooking top plate and used for controlling the opening and closing of the relay, so that the safety of a user in the using process is guaranteed.

Compared with the prior art, the microwave plasma kitchen range device provided by the utility model has at least the following beneficial effects:

1. the microwave generator generates microwaves, the microwaves pass through the microwave resonant cavity, so that a space electromagnetic field is enhanced, strong gas ionization is induced at the position of the discharge tube to generate plasma, flame is formed, when the microwave energy-saving kitchen range hood is used, the power of a power supply can be normally operated by only pressing a button switch, a complete intelligent control and safety module is designed by rotating the knob, the safety of a user in the use process is ensured, air is used as working gas, and the microwave energy-saving kitchen range hood is more convenient and rapid, and can realize high-efficiency heating by a simple and efficient means, so that the microwave energy-saving kitchen range hood is very suitable for being used in a kitchen;

2. the microwave plasma kitchen range device can heat evenly, practical convenient, safe and reliable, power is big, thermal efficiency is high, integrate highly, only need the circular telegram can use, clean environmental protection, can not produce carbon emission, electrodeless ablation, and microwave plasma intensifies soon, can reach higher temperature in the short time.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent from the following description of embodiments of the present utility model with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a microwave plasma module according to an embodiment of the utility model;

FIG. 2 is a schematic view of the upper surface of the cooking stove according to the embodiment of the present utility model;

FIG. 3 is a schematic diagram of input/output of a control module according to an embodiment of the present utility model;

FIG. 4 is a flow chart of the operation in an embodiment of the present utility model; and

FIG. 5 is a flowchart illustrating operation of the control module according to an embodiment of the present utility model.

[ reference numerals description ]

1. A microwave plasma module; 2. a microwave source; 3. a stove top plate; 11. a power controller; 12. a power supply; 13. a microwave generator; 14. a microwave resonant cavity; 141. a compressed waveguide; 15. an excitation region; 16. a three-way discharge tube; 17. an air inlet; 18. a light sensor; 19. a flow meter; 20. an air pump; 21. a pot support; 22. a windshield; 23. a thermal sensor; 24. a buzzer; 25. a push button switch; 26. a fault indicator light; 27. the knob is rotated.

Detailed Description

The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed therewith; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.

Fig. 1 is a schematic view of a microwave plasma module according to an embodiment of the utility model. FIG. 2 is a schematic view of the upper surface of the stove according to the embodiment of the present utility model.

Referring to fig. 1 and 2, a microwave plasma cooking device is provided in an embodiment of the present utility model, which includes a microwave plasma module 1, wherein the microwave plasma module 1 includes a microwave generator 13, a microwave resonant cavity 14 and a discharge tube 16. A cooktop plate 3 is provided above the microwave plasma module 1. The microwave resonant cavity 14 is fixedly arranged at the bottom of the cooking top plate 3, the microwave generator 13 is arranged at the lower side of the microwave resonant cavity 14, the discharge tube 16 is arranged at one end of the microwave resonant cavity 14 far away from the microwave generator 13, and the excitation area 15 is arranged in the discharge tube 16.

And the power supply module is electrically connected with the microwave generator 13 and is used for controlling the output of the power of the microwave generator 13.

And the air supply module is connected with the discharge tube 16 and is used for supplying air flow into the discharge tube 16 and forming a microwave plasma torch with microwave plasma.

In the embodiment of the present utility model, the number of the microwave plasma modules 1 is plural, and the specific number is not limited, and the present utility model is based on practical application.

Specifically, an ignition conductor is provided in the discharge tube 16 for exciting microwaves to generate microwave plasma.

The microwave plasma cooking utensils device still includes power module, and power module includes: and a power controller 11, wherein the power controller 11 simultaneously controls a plurality of power sources 12, each power source 12 is electrically connected with a microwave generator 13 in one microwave plasma module 1, the power source 12 is used for supplying power to the microwave plasma module 1, the power controller is used for controlling the output of the power source 12, and the output power of the plurality of power sources 12 can be simultaneously controlled by adjusting the power controller 11.

Specifically, the power supply 12 is electrically connected to the microwave generator 13 to form the microwave source 2, and the microwave source 2 is used to generate microwaves.

In an embodiment of the present utility model, the microwave plasma cooking appliance apparatus further includes an air supply module including: the air pump 20, the flowmeter 19 connects in parallel and controls the air flow of a gas circuit separately, each flowmeter 19 communicates with the discharge tube 16 in a microwave plasma module 1, the air pump 20 is used for producing the gas, the flowmeter 19 is used for controlling the air pump 20 and outputting the flowrate of the gas.

Specifically, taking the number of the flow meters 19 as three as an example, the air pump 20 is connected with the three flow meters 19 through a three-in-one adapter, the three-in-one adapter divides the gas output by the air pump 20 into three gas flows, the three gas flows enter the three flow meters 19 respectively, and then the flow rate of the gas output is controlled by the flow meters 19, so that the temperature distribution and the morphology characteristics of the plasma torch are controlled.

In the embodiment of the present utility model, the gas in the air pump 20 is air, nitrogen, argon or helium, and other harmless gases capable of exciting the plasma torch.

In the embodiment of the utility model, the bottom of the discharge tube 16 is provided with the air inlet 17, and the air flow controlled by the flowmeter 19 enters the discharge tube 16 through the air inlet 17 to form the microwave plasma torch.

Specifically, a compression waveguide 141 is further disposed in the microwave cavity 14, for compressing microwaves.

In the embodiment of the utility model, the lower side of the microwave resonant cavity 14 close to the microwave generator 13 is thicker, the side of the microwave resonant cavity 14 far away from the microwave generator 13 is thinner, the middle is connected by a section of compressed waveguide 141, and the amplitude of the microwave electric field is the largest in the thinner end of the microwave resonant cavity 14.

In the embodiment of the present utility model, the discharge tubes 16 in the plurality of microwave plasma modules 1 are uniformly distributed along the circumferential direction so that they can discharge uniform microwave plasma torches, thereby realizing uniform flames.

In the embodiment of the present utility model, the discharge tube 16 is a multi-pass discharge tube, such as a three-way quartz tube, which can better enhance the uniformity of heating and separate the plasma torch.

In the present embodiment, the discharge tube 16 is a quartz discharge tube or a ceramic discharge tube, or other material that is easily transparent to microwaves and resistant to high temperatures.

In an embodiment of the present utility model, further comprising a control module, the control module comprising: and a photosensor 18 provided outside the discharge tube 16 for detecting whether the discharge tube 16 forms a torch. The thermal sensor 23 is arranged in the middle of the discharge tubes 16 which are uniformly distributed along the circumferential direction and is used for detecting the bottom temperature of the cooker in normal operation. The positions and the number of the sensors are taken as examples, and other positions and the number are within the protection scope of the utility model, and the actual application is in particular.

In an embodiment of the utility model, the control module further comprises: a relay is provided in the cooktop plate 3 for controlling the turning on and off of the microwave generator 13.

In an embodiment of the utility model, the control module further comprises: the buzzer 24 and the fault indicator lamp 26 are both arranged on the stove panel 3, the buzzer 24 is used for sounding an alarm, and the fault indicator lamp 26 is used for fault display.

In the embodiment of the utility model, a plurality of pot supports 21 are arranged on the cooking top plate 3, and a wind shield 22 is arranged on the periphery of the plurality of pot supports 21 for reducing heat dissipation and improving heat efficiency.

In the embodiment of the present utility model, the plurality of pot holders 21 are uniformly distributed in the circumferential direction.

In the embodiment of the present utility model, a rotation knob 27 is further provided on the stove top plate 3, and the rotation knob 27 is connected to the power controller 11, and controls the power outputted from the plurality of power sources 12 by controlling the power controller 11.

In the embodiment of the present utility model, a push button switch 25 is further provided on the cooktop plate 3 for controlling the opening and closing of the relay.

The utility model provides an embodiment taking 3 microwave plasma modules 1 and three discharge tubes 16 as examples.

The microwave plasma kitchen range device consists of a microwave plasma module 1, a power supply module, an air supply module and a control module, wherein the power supply module supplies power to the microwave plasma module 1, the microwave plasma module 1 generates microwave plasma, the air supply module supplies air flow to the microwave plasma module 1 to form a microwave plasma torch, and the control module realizes intelligent control and safety guarantee of the whole kitchen range device.

The power supply module comprises, for example, three power supplies 12 and one power controller 11, wherein the three power supplies 12 are simultaneously connected with one power controller 11, and meanwhile, one power supply 12 and one microwave generator 13 can form one microwave source 2, and the microwave sources 2 are used for generating microwaves, and since the number of the microwave plasma modules 1 is 3, the number of the microwave sources 2 is also three.

Based on the 3 microwave plasma modules 1, the three-way discharge tubes 16 are also three, and the three-way discharge tubes 16 are uniformly distributed along the circumferential direction, so that torches are uniformly distributed, microwaves generated by each microwave source 2 enter the microwave resonant cavity 14 and pass through the compressed waveguide 141, and the space electromagnetic field in the three-way discharge tubes 16 is enhanced, so that strong gas ionization occurs at the excitation area 15 to generate microwave plasma. Meanwhile, an air inlet 17 is arranged at the bottom of the three-way discharge tube 16 of the microwave plasma module 1, each air inlet 17 is connected with a flowmeter 19, the three flowmeters 19 are connected in parallel, based on a one-to-three adapter, the gas output by the air pump 20 is divided into three channels, the flow of the gas is controlled by the flowmeters 19 and is input into the air inlet 17, and microwave plasma is generated to blow out of the three-way discharge tube 16, so that a microwave plasma torch is formed.

Based on three-way discharge tubes 16 uniformly distributed along the circumferential direction, a thermal sensor 23 is installed in the middle of the three-way discharge tubes 16, the thermal sensor 23 is an infrared temperature measuring sensor, for example, a measuring probe is aligned right above the measuring probe and used for monitoring the temperature of the bottom of a pot in normal operation and for overheat protection, and a light sensor 18 is also placed on the periphery of each three-way discharge tube 16 and used for monitoring whether a plasma torch is ignited or not at all times.

Fig. 3 is a schematic diagram of input and output of a control module according to an embodiment of the utility model.

As shown in fig. 3, the control module of this embodiment further includes a control unit, for example, the control unit may be a single-chip microcomputer, and is configured to receive the control signal of this embodiment, implement temperature detection and overheat protection of the device according to the single-chip microcomputer, for example, receive signals such as a light detection signal, an overheat protection signal, and the like, and if the signals do not conform to a preset value, control the relay to be turned off. The generation of microwaves of the microwave generator 13 and the on and off of the fault indicator lamp 26 and the on and off of the buzzer 24 can be further controlled by controlling the on and off of the relay, so that the temperature detection and overheat protection of the device are realized.

Fig. 4 is a flowchart of operations in an embodiment of the present utility model.

As shown in fig. 4, another embodiment of the present utility model provides a workflow diagram of a microwave plasma cooking appliance device, comprising the steps of:

s1, opening an air pump, introducing air flow into the discharge tube, and adjusting the air flow to a proper value.

S2, opening a cooling fan for cooling the microwave generator.

S3, pressing a button switch, switching on a power supply, supplying power to a microwave generator, exciting microwaves by an ignition conductor to generate microwave plasma, dividing the microwave plasma into a plurality of torches through a three-way discharge tube, and uniformly heating the bottom of the pot; if the plasma is not excited normally, the relay is opened, and the relay is closed again after 1 s. If the plasma is not yet excited, the plasma is re-ignited once more. If the plasma is not excited, the relay is disconnected, the buzzer is started, and the fault indicator lamp is lightened.

S4, adjusting the power by rotating a rotary knob on the cooking range panel, and adjusting the gas flow by adjusting a knob of the flowmeter.

S5, the control module continuously monitors the running state of the kitchen range, and if abnormal conditions occur, the control module alarms or repeatedly fires and other operations according to the program.

FIG. 5 is a flowchart illustrating operation of the control module according to an embodiment of the present utility model.

As shown in fig. 5, in summary, the working principle of the microwave plasma cooking device provided by the utility model is as follows:

pressing a button switch, namely closing a relay, waiting for 1s, exciting a microwave plasma torch, and continuously detecting whether the temperature of the bottom of the pot exceeds a preset value by an infrared temperature measuring sensor after the light detection module detects that the three-way discharge tube excites the torch, wherein if the temperature of the bottom of the pot does not exceed the preset value, normal operation is indicated; when the infrared temperature measuring sensor detects that the temperature of the bottom of the pot exceeds a preset value, the relay is disconnected to indicate that a fault occurs, a fault signal lamp is lightened, and the buzzer is started; when the light detection module does not detect that the three-way discharge tube excites a torch, the relay is disconnected, the ignition is restarted after 1s, the operation is repeated, when the ignition times exceed 3 times, the plasma is judged to be unable to ignite, the relay is disconnected, the fault signal lamp is lightened, and the buzzer is started.

It should be understood that the specific order or hierarchy of steps in the processes of the utility models are examples of exemplary approaches. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present utility model. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the utility model. And the shape, size and position relation of each component in the figure do not reflect the actual size, proportion and actual position relation.

Similarly, in the description of exemplary embodiments of the utility model above, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. The description of the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (16)

1. A microwave plasma cooking appliance comprising a cooking top plate (3), characterized in that it further comprises:

the microwave plasma module (1) comprises a microwave generator (13), a microwave resonant cavity (14) and a discharge tube (16), wherein the microwave resonant cavity (14) is fixedly arranged at the bottom of the stove panel (3), the microwave generator (13) is arranged at the lower side of the microwave resonant cavity (14), the discharge tube (16) is arranged at one end, far away from the microwave generator (13), of the microwave resonant cavity (14), and an excitation area (15) is arranged in the discharge tube (16);

the power supply module is electrically connected with the microwave generator (13) and is used for controlling output power;

and the air supply module is connected with the discharge tube (16) and is used for supplying air flow into the discharge tube (16).

2. The microwave plasma cooking appliance arrangement according to claim 1, wherein the microwave plasma modules (1) are plural, the power supply module comprising:

a power controller (11);

a plurality of power sources (12) electrically connected with the power controllers (11), wherein each power source (12) is electrically connected with a microwave generator (13) in one microwave plasma module (1), the power sources (12) are used for supplying power to the microwave plasma module (1), and the power controllers are used for controlling the output of the power of the plurality of power sources (12).

3. The microwave plasma cooking device according to claim 2, wherein the air supply module includes:

an air pump (20);

a plurality of parallel flow meters (19), each flow meter (19) is communicated with a discharge tube (16) in one microwave plasma module (1), the air pump (20) is used for generating gas, and the flow meters (19) are used for controlling the flow rate of the gas output by the air pump (20).

4. A microwave plasma cooking device according to claim 3, characterized in that the gas in the air pump (20) is air, nitrogen, argon or helium.

5. A microwave plasma cooking device according to claim 3, characterized in that the bottom of the discharge tube (16) is provided with an air inlet (17), through which air inlet (17) the air flow controlled by the flow meter (19) enters the discharge tube (16).

6. The microwave plasma cooking device according to claim 1, characterized in that the lower side of the microwave cavity (14) close to the microwave generator (13) is thicker, and the side of the microwave cavity (14) remote from the microwave generator (13) is thinner.

7. The microwave plasma cooking appliance arrangement according to claim 2, characterized in that the discharge tubes (16) in a plurality of the microwave plasma modules (1) are evenly distributed along the circumferential direction.

8. The microwave plasma cooking device according to claim 7, characterized in that the discharge tube (16) is a multi-pass discharge tube.

9. The microwave plasma cooking device according to claim 8, characterized in that the discharge tube (16) is a quartz discharge tube or a ceramic discharge tube.

10. The microwave plasma cooking appliance assembly of claim 9, further comprising a control module, the control module comprising:

a photosensor (18) provided outside the discharge tube (16) for detecting whether the discharge tube (16) forms a torch;

and the thermal sensors (23) are arranged in the middle of the discharge tubes (16) which are uniformly distributed along the circumferential direction and are used for detecting the bottom temperature of the cooker during normal operation.

11. The microwave plasma cooking device of claim 10, wherein the control module further comprises:

and the relay is arranged in the cooking top plate (3) and is used for controlling the on and off of the microwave generator (13).

12. The microwave plasma cooking device of claim 11, wherein the control module further comprises:

the buzzer (24) and the fault indicator lamp (26) are arranged on the stove panel (3), the buzzer (24) is used for giving out alarm sound, and the fault indicator lamp (26) is used for fault display.

13. The microwave plasma cooking appliance arrangement according to claim 12, characterized in that a plurality of pot holders (21) are placed on the cooking top plate (3), the periphery of the plurality of pot holders (21) being provided with a windshield (22).

14. The microwave plasma cooking appliance arrangement according to claim 13, wherein the plurality of pot holders (21) are evenly distributed in the circumferential direction.

15. The microwave plasma cooking appliance arrangement according to claim 11, characterized in that the cooking top plate (3) is further provided with a rotation knob (27), the rotation knob (27) is connected with a power controller (11), and the power output by the power controllers (11) is controlled by controlling the power output by the power sources (12).

16. The microwave plasma cooking appliance arrangement according to claim 15, characterized in that the cooking top plate (3) is further provided with a push button switch (25) for controlling the opening and closing of the relay.

Images