CN111829022A

CN111829022A - Emission suppression type plasma stove

Info

Publication number: CN111829022A
Application number: CN202010807020.5A
Authority: CN
Inventors: 肖辉平
Original assignee: Guangdong Guoai Plasma Electric Appliance Co ltd
Current assignee: Shenzhen guoai Quandian Intelligent Technology Co.,Ltd.
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-10-27

Abstract

The invention discloses an emission inhibition type plasma stove which comprises a base, a stove head and an electric control unit, wherein the stove head comprises a discharge electrode and a voltage transformation module, and the voltage transformation module comprises an installation shell and a voltage transformation circuit unit; the cooking range also comprises a high-temperature and high-pressure resistant insulating plate which is hermetically connected with the mounting shell, and a cylindrical support ring which is arranged around the discharge electrode; the cylindrical support ring, the high-temperature and high-pressure resistant insulating plate and the bottom of the cooker enclose a closed cooking range inner cavity, the high-temperature and high-pressure resistant insulating plate and the mounting shell are provided with exhaust passages in a penetrating manner, and the exhaust passages are connected with exhaust fans; the exhaust fan exhausts the inner cavity of the cooking range into a negative pressure state at the initial ignition stage and continuously works for a period of time after the use, so that the emissions in the cooking range are exhausted to the base and neutralized and decomposed in the air in the base. The invention ensures that the total amount of the irritant discharge generated by the plasma stove in the whole cooking process is fixed, effectively controls the discharge amount of the irritant discharge and reduces the influence on the environment.

Description

Emission suppression type plasma stove

Technical Field

The invention relates to the technical field of cookers, in particular to an emission inhibition type plasma cooker.

Background

Plasma (plasma), also known as plasma, is an ionized gaseous substance consisting of atoms deprived of part of electrons and positive and negative ions produced by ionization of radicals, a macroscopic electrically neutral ionized gas with dimensions greater than the debye length, whose motion is dominated mainly by electromagnetic forces and exhibits a pronounced collective behavior. The plasma is a good electric conductor, and the plasma can be captured, moved and accelerated by utilizing a magnetic field which is skillfully designed. The development of plasma physics provides new technology and process for the further development of science such as materials, energy, information, environmental space, space physics, geophysical and the like. Plasma is a fourth state of matter different from solid, liquid and gas. A substance is composed of molecules, which are composed of atoms, which are composed of a positively charged nucleus and negatively charged electrons surrounding it. When heated to a sufficiently high temperature or for other reasons, the outer electrons become free electrons free from the nuclei, as if the student after class runs to the playground to play at will. The electrons leave the nucleus, a process known as "ionization". At this point, the material becomes a uniform "paste" of positively charged nuclei and negatively charged electrons, and is thus called a plasma because it is called a "paste" by chance, which is a paste of ions of equal total positive and negative charge and therefore nearly electrically neutral.

The plasma stove is a novel stove which utilizes the characteristics of plasma, uses high-voltage electricity to breakdown air to form thermal plasma, converts electric energy into heat energy, finally obtains thermal plasma beams with ideal length and function, and generates the thermal plasma beams with similar flame characteristics to heat a pot for cooking.

In the cooking process of the plasma stove, when the electric arc generated by the discharge electrode of the stove head ionizes the air in the stove head, irritant emissions such as ozone, nitrogen dioxide and nitrogen oxide can be generated. However, the cooking range structure of the existing plasma cooking range is not well sealed, and external gas can be continuously supplemented into the cooking range in the cooking process, so that new irritant emissions can be continuously generated in the cooking range, and the emission of the irritant emissions in the whole cooking process is not effectively controlled, so that the environment is affected. Meanwhile, the existing plasma stove generates the overflow of irritant emissions at the initial stage of ignition, and the use experience is influenced. Moreover, after the use is finished, the irritant emissions discharged in the cooking range in the prior art are not rapidly extracted, and become very dense yellow smoke, which affects the use experience.

Therefore, the prior art has yet to be improved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to an emission-suppressing plasma cooker, which is designed to prevent the discharge of the irritant emissions generated during the initial stage of ignition from overflowing, to suck the irritant emissions into the base to neutralize the air after use, thereby preventing the emission of yellow smoke, improving the user experience, and to effectively control the total amount of the irritant emissions during the whole cooking process, thereby reducing the influence on the environment.

In order to realize the purpose, the invention adopts the following technical scheme:

an emission-suppression plasma stove comprises a base, a stove head arranged on the base and an electric control unit arranged on the base, wherein the stove head comprises a plurality of discharge electrodes exposed from the upper side of the base and a voltage transformation module arranged below the discharge electrodes, the voltage transformation module comprises an installation shell arranged on the base and a voltage transformation circuit unit arranged in the installation shell, and the voltage transformation circuit unit is electrically connected with the electric control unit and the discharge electrodes;

the cooking range also comprises a high-temperature and high-pressure resistant insulating plate which is hermetically connected with the upper end of the mounting shell and used for mounting the plurality of discharge electrodes, and a cylindrical support ring which protrudes above the base and surrounds the discharge electrodes;

the cylindrical support ring is used for supporting a cooker, and encloses a closed cooking range inner cavity together with the high-temperature and high-pressure resistant insulating plate and the bottom of the cooker, the high-temperature and high-pressure resistant insulating plate and the mounting shell are provided with exhaust passages communicated with the cooking range inner cavity in a penetrating manner, and the exhaust passages are connected with exhaust fans electrically connected with the electric control unit outside the mounting shell;

the exhaust fan is used for exhausting air in the inner cavity of the cooking range to be in a negative pressure state in an ignition initial stage and exhausting emissions in the inner cavity of the cooking range after the ignition is turned off.

The mounting shell comprises an upper cover and a lower cover which is covered with the upper cover, the lower end face of the high-temperature and high-pressure resistant insulating plate is covered on the top end of the upper cover in a sealing manner, and the upper end face of the high-temperature and high-pressure resistant insulating plate is connected with the lower end face of the cylindrical support ring in a sealing manner;

the exhaust passage comprises an exhaust port penetrating through the high-temperature and high-pressure resistant insulating plate and an exhaust cavity penetrating out of the outer side of the upper cover from the inner side of the upper cover, the inner side of the exhaust cavity is communicated with the exhaust port, the outer side of the exhaust cavity is provided with the exhaust fan, and the exhaust fan is arranged in the base.

The upper cover comprises a cover plate in the middle and a connecting ring around the cover plate, and a sealing step is arranged on the upper end face of the connecting ring in the circumferential direction and is connected with the lower end face of the periphery of the high-temperature and high-pressure resistant insulating plate;

the connecting ring is also provided with a sealing groove in the circumferential direction of the sealing step, and a sealing element is arranged in the sealing groove.

Wherein, the top end inboard of tube-shape lock ring is provided with the inclined plane of closely laminating with the pan bottom surface.

The lower cover is provided with a drainage pipeline communicated with the bottom surface of the exhaust cavity, and the tail end of the drainage pipeline penetrates out of the bottom surface of the base and is provided with a dead weight type sealing plug.

The cooking range also comprises a negative electrode which is arranged on the high-temperature and high-pressure resistant insulating plate and is used for forming a discharge loop with the plurality of discharge electrodes.

And the outer wall of the mounting shell is also provided with a temperature sensor electrically connected with the electric control unit.

The cooking range comprises a mounting shell, a cooking range head and a lifting grounding device, wherein the cooking range head further comprises the lifting grounding device arranged above the mounting shell, the lifting grounding device is upwards convexly provided with a stretching end capable of elastically lifting and used for being in elastic contact with the bottom of a cookware, the stretching end penetrates out of a high-temperature and high-pressure resistant insulating plate and is connected with the high-temperature and high-pressure resistant insulating plate in a sealing mode, and the stretching end is electrically grounded.

The base is also provided with a cooling fan which is electrically connected with the electric control unit, and an air inlet and an air outlet which are arranged on the base and used for supplying air inlet and air outlet of the cooling fan.

The electronic control unit comprises a main control circuit and a power circuit electrically connected with the main control circuit, wherein the output end of the power circuit is electrically connected with the input end of the voltage transformation circuit unit;

the electric control unit further comprises a leakage detection circuit and a grounding detection circuit which are electrically connected with the main control circuit.

The emission inhibition type plasma stove is characterized in that a high-temperature and high-pressure resistant insulating plate is hermetically arranged on a mounting shell on a stove head, a cylindrical support ring is arranged at the same time, the cylindrical support ring, the high-temperature and high-pressure resistant insulating plate and the bottom of a pot enclose a sealed stove head inner cavity, and the stove head inner cavity is communicated with an air exhaust fan outside the mounting shell through an air exhaust channel. After the pan was put at the tube-shape support ring, the kitchen range inner chamber was similar to inclosed cavity, opened the work of air exhaust fan at the initial stage of lighting a fire, and the kitchen range inner chamber can become a negative pressure cavity rapidly, and the irritability emission that produces at the initial stage of lighting a fire like this can not be excessive and polluted environment and influence use experience at the negative pressure effect. The kitchen range is similar to a closed cavity by the kitchen range inner cavity, then the total amount of air entering the kitchen range inner cavity is certain, the total amount of ozone and nitrogen oxide that produce among its ionization process is also certain, can not increase at the culinary art in-process, so its volume of discharging through the bleed fan is also certain, just so played the effect of discharging the suppression, the environment has been protected, simultaneously because the emission is certain, so the bleed fan can be closed at the intermediate stage of culinary art, after turning off the fire, restart the fixed amazing emission suction of kitchen range inner cavity total amount in the base, then with the air neutralization decomposition in the base, the kitchen range gives out the yellow smoke after avoiding using, user's use experience has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a first embodiment of an emission-suppressing plasma cooker of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a schematic circuit diagram of a first embodiment of an emission-suppressing plasma cooker according to the present invention;

FIG. 4 is a schematic cross-sectional view of the structure of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the cooking range structure of the present invention;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a bottom view of the structure of FIG. 1;

FIG. 8 is a schematic view of the structure of the cooking range of the present invention;

FIG. 9 is a first exploded view of the structure of FIG. 8;

FIG. 10 is a second exploded view of the structure of FIG. 8;

fig. 11 is a schematic view of the contact between the lifting grounding device and the bottom surface of the pot.

Description of reference numerals:

100-plasma oven, 1-base, 2-oven, 3-electric control unit, 31-main control circuit, 32-power supply circuit, 33-leakage detection circuit, 34-grounding detection circuit, 4-discharge electrode, 5-voltage transformation module, 6-installation shell, 61-upper cover, 611-cover plate, 612-connection ring, 613-sealing step, 614-sealing groove, 62-lower cover, 621-inlet wire connection port, 622-ground wire connection port, 623-exhaust cavity connection box, 624-sealing pad, 7-voltage transformation circuit unit, 8-high temperature and high pressure resistant insulation board, 9-cylindrical support ring, 91-inclined plane, 10-oven inner cavity, 11-exhaust channel, 111-exhaust port, 112-exhaust cavity, 12-an exhaust fan, 13-a drainage pipeline, 14-a dead weight type sealing plug, 15-a negative electrode, 16-a temperature sensor, 17-a lifting grounding device, 171-an extending end, 181-a plug, 182-a man-machine interaction panel, 183-a switch button, 184-an adjusting knob, 191-a radiating fan, 192-an air inlet, 193-an air outlet and 200-a pot.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 4, the present invention provides an emission-suppressing plasma cooker 100, including a base 1, a cooking range 2 disposed on the base 1, and an electric control unit 3 disposed on the base 1, wherein the cooking range 2 includes a plurality of discharge electrodes 4 exposed from above the base and a transformer module 5 disposed below the discharge electrodes, the transformer module 5 includes a mounting case 6 mounted on the base 1 and a transformer circuit unit 7 disposed in the mounting case 6, and the transformer circuit unit 7 is electrically connected to the electric control unit 3 and the discharge electrodes 4.

The electric control unit 3 is used for generating a driving power supply required by the transformation circuit unit 7, and controlling the transformation circuit unit 7 to be switched on and off and output power. The driving power supply generated by the electric control unit 3 is a high-frequency or low-frequency low-voltage power supply, the transformation circuit unit 7 converts the low-voltage power input by the electric control unit 3 into high-voltage power and outputs the high-voltage power to the discharge electrode 4 for discharging, and the electric arc generated by the discharge of the discharge electrode 4 ionizes air to generate high-temperature plasma to heat the pot bottom. In the embodiment of the invention, the electric control unit 3 and the voltage transformation module 5 are arranged in the base 1 in a separated manner. The electronic control unit 3 is connected to an external power source through a plug 181.

The discharge electrode 4 of the plasma cooker 100 of the present invention is a positive electrode, and when the cookware is a metal cookware, the metal cookware can be directly used as a negative electrode to form a discharge circuit; when the cookware is ceramic cookware, the cooking range 2 is internally provided with a negative electrode independently.

As shown in fig. 3, the electronic control unit 3 according to the embodiment of the present invention includes a main control circuit 31, and a power circuit 32 electrically connected to the main control circuit 31, wherein an output terminal of the power circuit 32 is electrically connected to an input terminal of the voltage transformation circuit unit 7.

The main control circuit 31 can be controlled by a single chip microcomputer in combination with a program, the main control circuit 31 controls the output of the voltage transformation circuit unit 7, and the power circuit 32 provides a driving current for the voltage transformation circuit unit 7. The power supply circuit 32 is connected to the external commercial power through a plug 181.

Preferably, the electronic control unit 3 of the present invention further includes a leakage detecting circuit 33 electrically connected to the main control circuit 31. The electric leakage detection circuit 33 detects whether electric leakage exists in the installation shell 6 of the base 1, the cooking range 2 and the voltage transformation module 5, the cookware and the like, and once the electric leakage occurs, the main control circuit 31 controls the power supply of the plasma cooking range 100 to be closed, thereby ensuring the use safety.

Preferably, the electronic control unit 3 of the present invention further includes a ground detection circuit 34 electrically connected to the main control circuit 31. The grounding detection circuit 34 detects whether effective grounding exists on the base 1, the cooking range 2, the voltage transformation module 5, the cooker 200 and the like, and once the effective grounding is detected, the main control circuit 31 controls to close the power supply of the plasma cooker 100, so that the grounding protection effect is achieved.

In the embodiment of the present invention, the base 1 is further provided with a human-computer interaction panel 182 for controlling the plasma oven 100. The human-computer interaction panel 182 may be provided as a key or a touch screen. The base 1 is further provided with a switch button 183 and an adjusting knob 184 for switching on and off the plasma cooker 100 and adjusting the output power. The man-machine interaction panel 182, the switch button 183 and the adjusting knob 184 are electrically connected with the main control circuit 31.

Preferably, the base 1 of the plasma cooker 100 of the present invention is further provided with a heat dissipation fan 191 electrically connected to the electronic control unit 3, and an air inlet 192 and an air outlet 193, which are disposed on the base 1 for air inlet and outlet of the heat dissipation fan 191. Therefore, heat generated by the voltage transformation module 5 can be quickly blown out of the base 1, and the heat dissipation effect of the whole machine is ensured.

As shown in fig. 4, 5 and 6, the cooking range 2 of the plasma cooking range 100 of the present invention further includes a high temperature and high pressure resistant insulating plate 8 hermetically connected to the upper end of the mounting case 6 for mounting the plurality of discharge electrodes 4, and a cylindrical support ring 9 protruded above the base 1 and surrounding the discharge electrodes 4.

The cylindrical support ring 9 is used for supporting the cookware 200 and encloses into a closed cooking range inner cavity 10 with the bottom of the high-temperature and high-pressure resistant insulation board 8 and the cookware 200, the high-temperature and high-pressure resistant insulation board 8 and the installation shell 6 are provided with a communicating channel, an exhaust channel 11 of the cooking range inner cavity 10 is connected with an air exhaust fan 12 which is electrically connected with the electric control unit 3 outside the installation shell 6, and the exhaust channel 11 is provided with a fan outlet which is electrically connected with the electric control unit 3. The exhaust fan 12 exhausts the range head inner chamber 10 to a negative pressure state at an initial stage of ignition and exhausts the exhaust in the range head inner chamber 10 after the ignition is turned off.

The cylindrical support ring 9 of the present invention may be made of a metal material or a high temperature resistant insulating material. The cylindrical support ring 9 may be disposed on the mounting housing 6, the high temperature and high pressure resistant insulating plate 8, or on the base 1, and the lower end of the cylindrical support ring is hermetically disposed at the contact position with the mounting housing 6, the high temperature and high pressure resistant insulating plate 8, or the base 1, so that the cylindrical support ring, the high temperature and high pressure resistant insulating plate 8, and the bottom of the pot 200 form a sealed cooking range inner cavity 10.

The high temperature and high pressure resistant insulating plate 8 is connected with the upper end of the mounting shell 6 in a sealing way, so that the gas in the inner cavity 10 of the cooking range can not flow out downwards to the voltage transformation circuit unit 7 in the mounting shell 6 due to the sealing effect. The insulating plate 8 bears the high temperature and the pressure of the gas in the inner cavity 10 of the cooking range, so the insulating plate 8 is made of high temperature and high pressure resistant materials.

According to the emission-suppression type plasma stove 100, after the cookware 200 is placed on the cylindrical support ring 9, the stove inner cavity 10 is similar to a closed cavity, and after the air exhaust fan 12 is started to work, the stove inner cavity 10 can quickly become a negative pressure cavity, so that irritant emissions generated by the stove at the initial stage of ignition cannot overflow under the action of negative pressure, and the environmental pollution and the influence on the use experience are avoided.

The arrangement of the cooking range structure of the invention ensures that the cooking range inner cavity 10 is similar to a closed cavity, and the total amount of air entering the cooking range inner cavity 10 is certain, so that the total amount of ozone and nitrogen oxide generated by air ionization is also certain in the primary cooking process of putting the cooker 200 on the plasma cooker 100 and lifting the cooker 200, and cannot be increased in the cooking process. Thus, the amount of the irritant exhaust discharged by the exhaust fan 12 is also constant, which plays a role of exhaust inhibition and protects the environment.

Meanwhile, the exhaust fan 12 of the present invention can continuously operate for a period of time after the plasma stove 100 is turned off, so as to rapidly exhaust the emissions such as ozone, nitrogen oxides and the like generated in the cooking range 2 during the cooking process into the base 1 box body, and neutralize and decompose the emissions with the air in the base 1, thereby preventing yellow dense smoke generated in the cooking range 2 and emitting to the outside of the cooking range after the stove is turned off after use, and improving the use experience of users.

Meanwhile, since the discharge amount of the irritant discharge substance is fixed in the plasma cooking range 100 of the present invention during one cooking, the exhaust fan 12 draws away the irritant discharge substance having a fixed total amount in the cooking range inner cavity 10 only at the initial stage of ignition and after the ignition is turned off, and turns off at the middle stage of cooking, thereby saving electric energy.

Specifically, as shown in fig. 5 and 6, the mounting case 6 includes an upper cover 61 and a lower cover 62 covering the upper cover 61, the lower end surface of the high temperature and high pressure resistant insulating plate 8 is sealed and covered on the top end of the upper cover 61, and the upper end surface of the high temperature and high pressure resistant insulating plate 8 is sealed and connected to the lower end surface of the cylindrical support ring 9. Therefore, the upper end surface of the upper cover 61 is sealed with the lower end surface of the high-temperature and high-pressure resistant insulating plate 8, and the upper end surface of the high-temperature and high-pressure resistant insulating plate 8 is sealed with the lower end surface of the cylindrical support ring 9, so that the sealing effect of the inner cavity 10 of the cooking range is ensured.

Exhaust passage 11 includes the break-through the gas vent 111 of high temperature and high pressure resistant insulation board to and wear out the exhaust chamber 112 in the upper cover 61 outside by upper cover 61 is inboard, the inboard intercommunication in exhaust chamber 112 gas vent 111, the outside installation extraction fan 12, extraction fan 12 arranges in base 1. The gas in the cooking range inner chamber 10 enters the exhaust chamber 112 from the exhaust port 111, then passes through the exhaust fan 12, and is drawn into the base 1 by the exhaust fan 12, and is neutralized and decomposed with the air in the base 1.

Referring to fig. 6 and 9, the upper cover 61 of the present invention includes a cover plate 611 in the middle, and a connection ring 612 around the cover 611, wherein a sealing step 613 is circumferentially disposed on an upper end surface of the connection ring 612 and connected to a lower end surface of a periphery of the insulating plate 8, the connection ring 612 is further circumferentially disposed with a sealing groove 614 on an outer periphery of the sealing step 613, and a sealing member (not shown) is disposed in the sealing groove 614. Thus, the sealing member can surround the outer walls of the bottom portions of the high-temperature and high-pressure resistant insulating plate 8 and the cylindrical support ring 9 to perform a sealing function. The seal within the seal groove 614 of the present invention may be a high temperature resistant seal ring or sealant.

Further, as shown in fig. 8, the inner side of the top end of the cylindrical support ring 9 of the present invention is provided with an inclined plane 91 closely attached to the bottom of the bottom surface of the pot 200. This enables the pot 200 to be well sealed with the cylindrical support ring 9 after being placed on the cylindrical support ring 9 of the cooking range 2.

Preferably, the outer wall of the installation case 6 of the plasma cooker 100 of the present invention is further provided with a temperature sensor 16 electrically connected to the electronic control unit 3. Specifically, the temperature sensor 16 is provided on the outer wall of the lower cover 62. The temperature sensor 16 can detect the temperature of the heat generated by the transformer circuit unit 7 or the heat generated by the plasma beam conducted to the mounting housing 6, and when the actual temperature of the mounting housing 6 exceeds a preset temperature during operation, the power supply of the transformer circuit unit 7 is cut off, so that the transformer circuit unit 7 stops outputting electric energy for the discharge electrode to stop the discharge operation, thereby ensuring the use safety. The outer wall of the lower cover 62 is further provided with a wire inlet connection port 621 and a ground wire connection port 622, the wire inlet connection port 621 electrically connects the voltage transformation circuit unit 7 in the installation housing 6 with the power circuit 32, the ground wire connection port 622 is used for installing a protective ground wire, and the protective ground wire connects the base 1, the cooking range 2 and the installation housing 6 with the power supply wire inlet end of the electric control unit, so that protective grounding is realized.

Preferably, as shown in fig. 7 to 9, the lower cover 62 of the plasma cooking stove 100 of the present invention is provided with a drainage pipe 13 communicating with the bottom surface of the exhaust cavity 112, the end of the drainage pipe 13 penetrates through the bottom surface of the base 1 and is provided with a self-weight sealing plug 14, the self-weight sealing plug 14 is adsorbed at the end of the drainage pipe 13 due to the negative pressure generated by the drainage pipe 13 when the exhaust fan 12 works, so as to generate the function of closing the pipe and the cooking stove inner cavity 10; when the water is drained, the water in the drainage pipeline 13 can automatically rush the dead weight type sealing plug 14 under the action of the gravity of the water to drain the water. Because the cooking process can bring part of water into the cooking range 2, and the bottom surface of the cooking range inner cavity 10 is sealed by the high temperature and high pressure resistant insulating plate 8, liquid can be accumulated on the high temperature and high pressure resistant insulating plate 8. In the invention, the drainage pipeline 13 is directly arranged at the bottom surface of the exhaust cavity 112, which is equivalent to integrating exhaust and drainage, and the drainage channel and the exhaust channel are shared, so that water on the high-temperature and high-pressure resistant insulating plate 8 can be pumped out in time by using the power of the air exhaust fan 12 and is collected into the drainage pipeline 13 at the bottom surface of the exhaust cavity 112 by the gravity of the water. When the gravity of the water is greater than the suction force of the exhaust fan 12 on the self-weight sealing plug 14, the self-weight sealing plug 14 is flushed by the water and drained. The dead weight type sealing plug 14 of the invention ensures the tightness of the cooking range inner cavity 10. The dead weight type sealing plug 14 can be rotatably arranged at the tail end of the drainage pipeline 13 so as to prevent the dead weight type sealing plug 14 from falling off and losing.

As shown in fig. 10, the outer wall of the lower cover 62 of the present invention is further provided with an exhaust chamber connecting box 623 and a gasket 624, and the drain pipe 13 is provided on the exhaust chamber connecting box 623. The exhaust chamber connection box 623 is communicated with the bottom of the exhaust chamber 111, and a gasket 624 is provided at the connection. The drain pipe 13 is provided in the lower cover 62, so that the mounting and dismounting of the upper cover 61 are facilitated, and the interference of the drain pipe 13 with the upper cover 61 is avoided.

Referring to fig. 4, the cooking range 2 of the plasma cooking range 100 of the present invention further includes a negative electrode 15 disposed on the insulating plate 8 for forming a discharge loop with the plurality of discharge electrodes 4. The negative electrode 15 is connected to the power ground on the circuit of the electronic control unit 3.

The negative electrode 15 is independently arranged on the plasma cooker 100, so that the cookware 200 is not used as a part of an electric loop any more in the using process, the method that the plasma beam of some existing plasma cookers 100 is generated between the discharge electrode and the cookware is changed, and the plasma beam is generated between the discharge electrode and the negative electrode, so that metal and nonmetal cookware can be used on the plasma cooker 100, and the problems that the cookware 200 is broken down and the service life of the cookware 200 is influenced due to the fact that the cookware is directly struck by the plasma when the cookware is used as the negative electrode and the cookware is directly struck on the bottom of the cookware under the long-time action are solved.

Further, as shown in fig. 11, the cooking range 2 of the plasma cooking range 100 of the present invention further includes a liftable grounding device 17 disposed above the installation housing 6, specifically disposed on the upper cover 61 and penetrating through the high temperature and high pressure resistant insulating plate 8. The lifting grounding device 17 is provided with an extending end 171 capable of elastically lifting and is used for being in elastic contact with the bottom of the cookware 200 in an upward protruding mode, the portion, penetrating out of the high-temperature and high-pressure resistant insulating plate 8, of the extending end 171 is connected with the high-temperature and high-pressure resistant insulating plate 8 in a sealing mode, and the extending end 171 is electrically grounded. The protruding end 171 is electrically grounded so that the protruding end 171 is finally connected to the ground and the potential is zero.

For safety, the fire should be turned off immediately when the cookware 200 is completely separated from the plasma oven in the prior art.

Since in the prior art, once the pot 200 leaves the cooking range 2, the pot 200 is no longer grounded, and if the fire is not turned off, the discharge electrode 4 may discharge toward the bottom of the pot 200 that leaves the cooking range 2, so that the pot 200 is electrified and an electric shock is easily caused. Therefore, in the prior art, a user cannot lift the pot (namely, the pot is lifted and separated from the cooker and jolts repeatedly, so that the cooked food is heated sufficiently) during cooking.

In the lifting grounding device 17 provided by the invention, the extending end 171 can be lifted and is in elastic contact with the bottom of the cookware 200, so that in the extending range of the extending end 171, even if the cookware 200 is lifted away from the cooking range 2, the cookware 200 is grounded because the bottom of the cookware is also in contact with the extending end 171, and the extending end 171 is grounded, so that the cookware 200 is grounded without potential safety hazard, and again, even if the height of lifting the cookware 200 away is higher than the highest extending height of the extending end 171, the discharge electrode 4 can not discharge towards the bottom of the cookware because the bottom of the cookware 200 is far enough away from the discharge electrode 4, the cookware 200 is also safe, so that a user can tilt the cookware without potential safety hazard during cooking. The highest protruding height of the protruding end 171 can be designed by experiment, for example, the height of the highest protruding height of the protruding end 171 from the plane of the discharge electrode 4 is 50mm or more.

Meanwhile, due to the safety function of the lifting grounding device 17, after the cooker 200 leaves the cooking range 2, the plasma cooker 100 does not need to be immediately turned off, so that the defect that the cooking is affected because the cooker needs to be turned off and on repeatedly to ensure safety to cause discontinuous heat when the cooker needs to be turned over in the prior art is overcome.

In the emission-suppression plasma cooker 100 according to the embodiment of the present invention, the installation housing 6 on the cooking range 2 is hermetically provided with the high temperature and high pressure resistant insulating plate 8, and the cylindrical support ring 9 is also provided, the cylindrical support ring 9, the high temperature and high pressure resistant insulating plate 8 and the bottom of the pot 200 enclose a sealed cooking range inner cavity 10, and the cooking range inner cavity 10 is communicated with the exhaust fan 12 outside the installation housing 6 through the exhaust passage 11. When the cookware 200 is placed on the cylindrical support ring 9, the cooking range inner cavity 10 is similar to a closed cavity, the total amount of irritant emissions generated in one cooking process is constant, and the emission amount of the irritative emissions is also constant through the air exhaust fan 12, so that the emission inhibition effect is achieved, the environment is protected, and meanwhile, the air exhaust fan can exhaust the cooking range inner cavity 10 into negative pressure to prevent gas overflow at the initial ignition stage. The air exhaust fan 12 of the plasma stove 100 can be turned off in the middle stage of cooking, and then the air exhaust fan is started to suck the irritant emissions in the inner cavity 10 of the stove into the base 1 and neutralize and decompose the irritant emissions in the base 1 after the fire is turned off, so that yellow smoke is prevented from being scattered out of the stove 2, and the use experience of a user is improved.

The above description is only for clearly illustrating the invention and is not therefore to be considered as limiting the scope of the invention, and all embodiments are not intended to be exhaustive, and all equivalent structural changes made by using the technical solutions of the present invention or other related technical fields directly/indirectly applied under the concept of the present invention are included in the scope of the present invention.

Claims

1. An emission-suppression plasma stove comprises a base, a stove head arranged on the base and an electric control unit arranged on the base, wherein the stove head comprises a plurality of discharge electrodes exposed from the upper side of the base and a voltage transformation module arranged below the discharge electrodes, the voltage transformation module comprises an installation shell arranged on the base and a voltage transformation circuit unit arranged in the installation shell, and the voltage transformation circuit unit is electrically connected with the electric control unit and the discharge electrodes;

it is characterized in that the preparation method is characterized in that,

2. The emission-suppressing plasma cooker according to claim 1, wherein the mounting case includes an upper cover and a lower cover covering the upper cover, wherein a lower end surface of the high temperature and high pressure resistant insulating plate is hermetically covered on a top end of the upper cover, and an upper end surface of the high temperature and high pressure resistant insulating plate is hermetically connected to a lower end surface of the cylindrical support ring;

3. The emission-suppressing plasma cooker according to claim 2, wherein the upper cover includes a middle cover plate and a connection ring around the cover plate, and a sealing step is provided on an upper end surface of the connection ring in a circumferential direction to be connected to a lower end surface of a periphery of the high-temperature and high-pressure resistant insulation plate;

4. The emission-suppressing plasma cooker as claimed in claim 2, wherein the cylindrical support ring is provided at an inner side of a top end thereof with a slope closely attached to a bottom surface of the pot.

5. The emission-suppressing plasma cooker as claimed in claim 2, wherein the lower cover is provided with a drain duct communicating with a bottom surface of the exhaust chamber, and a distal end of the drain duct penetrates through the bottom surface of the base and is provided with a dead weight type sealing plug.

6. The emission-suppressing plasma cooker as claimed in claim 1, wherein the burner further comprises a negative electrode disposed on the high temperature and high pressure resistant insulating plate for forming a discharge circuit with a plurality of discharge electrodes.

7. The emission-suppressing plasma cooker as claimed in claim 1, wherein the outer wall of the mounting case is further provided with a temperature sensor electrically connected to the electronic control unit.

8. The plasma cooker with the controllable single electrode according to claim 1, wherein the cooking range further comprises a liftable grounding device arranged above the mounting shell, the liftable grounding device is provided with an extending end capable of being elastically lifted and protruding upwards for being elastically contacted with the bottom of the cookware, the extending end penetrates out of the high-temperature and high-pressure resistant insulating plate to be hermetically connected with the high-temperature and high-pressure resistant insulating plate, and the extending end is electrically grounded.

9. The emission-suppressing plasma cooker as claimed in claim 1, wherein the base further has a heat dissipating fan electrically connected to the electronic control unit, and an air inlet and an air outlet provided on the base for air inlet and outlet of the heat dissipating fan.

10. The emission-suppressing plasma cooker as claimed in claim 1, wherein the electric control unit includes a main control circuit, a power circuit electrically connected to the main control circuit, an output terminal of the power circuit being electrically connected to an input terminal of the voltage transformation circuit unit;