CN112815364A

CN112815364A - Plasma stove with anti-creeping high-voltage bag structure

Info

Publication number: CN112815364A
Application number: CN202110127520.9A
Authority: CN
Inventors: 李峰
Original assignee: Zhejiang Banai Plasma Technology Co ltd
Current assignee: Zhejiang Banai Plasma Technology Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-05-18
Anticipated expiration: 2041-01-29
Also published as: CN112815364B

Abstract

The invention discloses a plasma stove with an anti-creeping high-voltage bag structure, which comprises a base, a stove head arranged on the base, a switching power supply and a control circuit, wherein the switching power supply and the control circuit are arranged on the base; a sealing cavity is formed in the high-voltage pack, a plurality of high-voltage capacitors are arranged at the upper part in the sealing cavity, and a high-voltage transformer is arranged at the lower part in the sealing cavity; the high-voltage capacitors are arranged in parallel, each high-voltage capacitor is electrically connected between a discharge electrode and the high-voltage transformer, and the high-voltage transformer is also electrically connected with the switching power supply and the control circuit; the upper space of the sealed cavity is filled with insulating glue to isolate the high-voltage capacitors from each other, and the lower space of the sealed cavity is filled with transformer oil to enclose and seal the high-voltage transformer. The invention can prevent the creepage phenomenon of the high-pressure package of the plasma stove and is beneficial to heat dissipation to prolong the service life of the product, and the safety of use is ensured because the high-pressure part of the product is completely sealed in the high-pressure package.

Description

Plasma stove with anti-creeping high-voltage bag structure

Technical Field

The invention relates to the technical field of cookers, in particular to a plasma cooker with an anti-creeping high-voltage bag structure.

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.

The plasma cooker uses electric energy as direct energy input, needs to boost the commercial power to high voltage of about 10KV for generating plasma beams, and is easy to generate creepage phenomenon under the high working voltage.

The creepage phenomenon is a phenomenon that a charged metal part and an insulating material generate a water wave-like electric arc and crawl along a sheath, the surface of an insulator between two poles slightly discharges, and long-time creepage can cause insulation damage to damage a product.

The inside of a high-voltage bag in the existing plasma stove is not provided with an anti-creeping design, and the safety of the plasma stove is affected by insulation damage caused after long-time use.

Therefore, the prior art has yet to be improved.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a plasma stove with an anti-creepage high-voltage bag structure, which aims to prevent a creepage phenomenon of a high-voltage bag of the plasma stove, prolong the service life of a product and ensure the use safety.

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

a plasma stove with an anti-creeping high-voltage bag structure comprises a base, a stove head arranged on the base, a switching power supply and a control circuit, wherein the switching power supply and the control circuit are arranged on the base;

a sealing cavity is formed in the high-voltage pack, a plurality of high-voltage capacitors are arranged at the upper part in the sealing cavity, and a high-voltage transformer is arranged at the lower part in the sealing cavity;

the high-voltage capacitors are arranged in parallel, each high-voltage capacitor is electrically connected between a discharge electrode and a high-voltage transformer, and the high-voltage transformers are also electrically connected with the switching power supply and the control circuit;

the upper space of the sealed cavity is filled with insulating cement to isolate the high-voltage capacitors from each other, and the lower space of the sealed cavity is filled with transformer oil to enclose and seal the high-voltage transformer.

The high-voltage pack comprises an insulating support, a shielding shell, the high-voltage transformer and a plurality of high-voltage capacitors which are arranged in parallel;

the bottom of the insulating support is hermetically connected with the top of the shielding shell, a sealed cavity is formed in the shielding shell, and the lower part of each discharge electrode penetrates through the insulating support and extends into the sealed cavity;

the shielding shell is made of metal materials, and a plurality of radiating ribs for increasing the radiating area are arranged on the outer surface of the shielding shell;

each high-voltage capacitor is provided with an upper wiring terminal and a lower wiring terminal, the upper wiring terminal is electrically connected with the bottom of a discharge electrode, and the lower wiring terminal is electrically connected with a high-voltage transformer.

And a common power supply ring is arranged between the lower part of the plurality of high-voltage capacitors and the upper part of the high-voltage transformer in the high-voltage pack, the high-voltage transformer is electrically connected with the common power supply ring, and the lower line connecting end of each high-voltage capacitor is electrically connected with the common power supply ring.

The upper terminal of each high-voltage capacitor and the part of each discharge electrode in the sealed cavity are completely coated by the insulating glue.

And the edge of the insulating support is provided with an anti-creeping skeleton in a downward annular convex manner in the sealing cavity.

The anti-creeping framework is provided with an inner layer and an outer layer, and a first anti-creeping trough is formed between the inner layer and the outer layer of the anti-creeping framework.

And a second anti-creeping electric groove is also arranged between the anti-creeping electric skeleton positioned on the outer layer of the insulating support and the inner wall of the shielding shell.

Wherein, the height of the anti-creep framework is more than or equal to 40 mm.

And insulating glue is poured at the position where each discharge electrode penetrates through the insulating support.

The insulating support is further provided with a liftable grounding probe, the liftable grounding probe is upwards protruded to be provided with an elastically liftable extending end for being in elastic contact with the bottom of the cookware, and the cookware is well grounded.

According to the plasma stove with the anti-creeping high-voltage package structure, the plurality of high-voltage capacitors are isolated from each other by the insulating glue filled in the upper space in the high-voltage package, and the transformer oil is filled in the lower space in the high-voltage package to completely surround and seal the high-voltage transformer, so that creeping in the high-voltage package can be effectively prevented, the safety of the plasma stove for electricity utilization is guaranteed, the service life of the high-voltage package is prolonged, and the heat in the cavity is easy to dissipate to the shielding shell made of metal due to good fluidity of the filled transformer oil, and is cooled by the air blowing of the heat dissipation fan, so that the heat of the high-voltage package is easier to dissipate.

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 plasma cooker with a creepage preventing high-voltage package structure according to a first embodiment of the present invention;

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

FIG. 3 is a schematic view illustrating a structure of the cooking range of FIG. 2;

FIG. 4 is an exploded view of the structure of FIG. 3;

FIG. 5 is a schematic view of the structure of FIG. 4 with a high voltage capacitor and a common power ring mounted on the bottom surface of the insulating support;

FIG. 6 is a schematic cross-sectional view of a high pressure package;

FIG. 7 is an enlarged schematic view at A of FIG. 6;

FIG. 8 is a schematic cross-sectional view of the structure of FIG. 3;

FIG. 9 is an enlarged schematic view at B of FIG. 8;

FIG. 10 is a schematic view of the bottom structure of the insulating support;

fig. 11 is a schematic view showing a contact between a liftable ground probe of a plasma cooker of the present invention and a bottom surface of a pot.

Description of reference numerals:

100-plasma cooker, 1-base, 2-cooking range, 3-switching power supply and control circuit, 4-high voltage package, 41-insulating support, 411-anti-creeping skeleton, 4111-inner-layer anti-creeping skeleton, 4112-outer-layer anti-creeping skeleton, 412-first anti-creeping groove, 413-second anti-creeping groove, 42-shielding shell, 421-heat dissipation rib, 43-public power supply ring, 44-oil-sealing rubber ring, 45-connection nut, 46-mounting seat, 5-discharge electrode, 6-sealing cavity, 7-high voltage capacitor, 71-upper terminal, 72-lower terminal, 8-high voltage transformer, 9-insulating rubber, 10-transformer oil, 11-support ring, 12-electrode mounting plate, 13-man-machine interaction panel, 14-plug, 15-cooling fan, 16-lifting grounding probe, 161-extension end and 200-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 7, the present invention provides a plasma stove 100 with an anti-creeping high-voltage package structure, including a base 1, a burner 2 disposed on the base 1, and a switching power supply and control circuit 3 disposed on the base 1, wherein the burner 2 includes a high-voltage package 4 and a plurality of discharge electrodes 5 disposed on the high-voltage package 4. The base 1 is used for installing the cooking range 2, the switching power supply and the control circuit 3 and has a supporting function. The base 1 may be formed by combining upper and lower housings made of plastic.

The switching power supply and control circuit 3 is used for generating a driving power supply required by the high-voltage package 4 and controlling the on and off of the high-voltage package 4 and outputting power. The driving power supply generated by the switching power supply and control circuit 3 is a high-frequency or low-frequency low-voltage power supply, the high-voltage package 4 converts the low-voltage input by the switching power supply and control circuit 3 into high-voltage electricity and outputs the high-voltage electricity to the discharge electrode 5 for discharging, and the electric arc generated by the discharge electrode 5 is used for ionizing air to generate plasma to heat the pot bottom. In the embodiment of the invention, the switching power supply and control circuit 3 is connected with an external power supply through a plug 14.

The switching power supply and control circuit 3 can be controlled by a singlechip and a program.

The cooking range 2 of the present invention further comprises a pot support ring 11 installed on the base 1 for placing and supporting the pot 200. The pan support ring 11 of the invention is electrically connected with the pan detection circuit.

Preferably, the power control circuit 3 of the present invention further comprises a pot detection circuit. The pot detection circuit detects whether a pot is placed on the cooker or not and is connected with the liftable grounding probe 16 and the pot support ring 11 or not, and the power control circuit 3 controls the power of the plasma cooker 100 to be turned off once the pot is disconnected with the liftable grounding probe 16 and the pot support ring 11. Thereby ensuring the use safety.

The discharge electrode 5 of the plasma cooker 100 of the present invention directly discharges electricity to the pots, so that the pots 200 of the present invention need to use metal pots. An electrode mounting plate 12 is arranged above the high-voltage pack 4 and used for mounting and fixing the discharge electrode 5.

Preferably, the electrode mounting plate 12 may be a high temperature-resistant insulating plate.

In the embodiment of the present invention, the base 1 is further provided with a human-computer interaction panel 13 for controlling the plasma oven 100. The man-machine interaction panel 13 may be provided as a key or a touch screen.

Preferably, the base 1 of the plasma cooker 100 of the present invention may further be provided with a heat dissipation fan 15, and an air inlet and an air outlet for supplying air to and discharging air from the heat dissipation fan 15. Therefore, heat generated by the high-voltage pack 4 can be quickly blown out of the base 1, and the heat dissipation effect of the whole machine is ensured.

As shown in fig. 6 and 7, a sealed chamber 6 is formed in the high pressure packet 4 of the plasma cooker 100 of the present invention, a plurality of high pressure capacitors 7 are provided at an upper portion in the sealed chamber 6, and a high pressure transformer 8 is provided at a lower portion in the sealed chamber 6. The high-voltage capacitors 7 are arranged in parallel, each high-voltage capacitor 7 is electrically connected between a discharge electrode 5 and a high-voltage transformer 8, and the high-voltage transformer 8 is also electrically connected with the switching power supply and the control circuit 3. The bottom of the discharge electrode 5 passes through the upper end of the high-voltage package 4 and extends into the sealed cavity 6. Each high-voltage capacitor 7 is provided with two connecting wires, one is connected with the discharge electrode 5, and the other is connected with the high-voltage transformer 8.

An external power supply is connected to the switching power supply and control circuit 3 through a plug 14 and then input to a high voltage transformer 8 in the high voltage package 4 for low voltage to high voltage conversion. The converted high voltage is output to each high voltage capacitor 7 through a parallel connection relationship, and then output to each discharge electrode 5 independently connected with the high voltage capacitor 7.

The high-voltage pack 4 of the invention realizes the conversion from low voltage to high voltage, and the high-voltage transformer 8 is arranged in a sealed cavity in the high-voltage pack 4 due to the consideration of safety and electromagnetic shielding. The high-voltage capacitor 7 is used for limiting the current output to each discharge electrode 5 and protecting the discharge electrodes 5. The upper end of the high voltage package 4 is inserted through the discharge electrode 5, so the upper end of the high voltage package 4 is generally of an insulating structure.

As shown in fig. 7, the upper space of the sealed cavity 6 of the plasma cooker 100 of the present invention is filled with an insulating paste 9 to isolate the plurality of high voltage capacitors 7 from each other, and the lower space of the sealed cavity 6 is filled with a transformer oil 10 to enclose and seal the high voltage transformer 8.

The high voltage is output after being converted by the high voltage transformer 8, and the high voltage is input into each high voltage capacitor 7 connected in parallel and then output to each discharge electrode 5. Therefore, in the sealed cavity 6, if no anti-creepage design is adopted, creepage can be generated between the connecting ends of the two adjacent high-voltage capacitors 7 and the discharge electrode 5 or between the two connecting ends of the high-voltage capacitors 7.

In the invention, the insulating glue 9 is poured into the upper space of the sealed cavity 6, so that all the discharge electrodes 5 can extend into the sealed cavity 6, and the connecting part of each high-voltage capacitor 7 and each discharge electrode 5 is coated in the insulating glue 9, thus realizing the sealing isolation between the discharge electrodes 5 in the sealed cavity 6 and between the high-voltage capacitors 7, preventing the creepage among the components and avoiding the damage of the upper end part of the high-voltage pack 4 due to the long-term creepage.

Meanwhile, the lower space of the sealed cavity 6 of the invention is filled with transformer oil 10 to completely enclose and seal the high-voltage transformer 8. Therefore, creepage can not be generated between the two connecting wires of the high-voltage capacitor 7, and the damage of the high-voltage capacitor 7 is avoided. The transformer oil 10 of the invention can not only enhance the insulating property of the high-voltage transformer 8, but also lead the heat in the sealed cavity 6 to be easily dissipated to the shell of the high-voltage package 4 made of metal because of the good fluidity of the poured transformer oil 10, quickly conduct the heat generated by the high-voltage transformer 8 to the shell of the high-voltage package 4 for heat exchange, and then be cooled by the blowing of the fan, thus being beneficial to the heat dissipation of the circuit in the high-voltage package 4. The high-pressure package 4 may be provided with an oil filling port to fill or discharge the transformer oil 10.

Specifically, as shown in fig. 4 and 5, the high-voltage package 4 of the present invention includes an insulating support 41, a shielding shell 42, and the high-voltage transformer 8 and a plurality of high-voltage capacitors 7 arranged in parallel. The insulating support 41 is used for mounting the plurality of discharge electrodes 5 therethrough. The shielding case 42 is an aluminum alloy metal case for shielding electromagnetic radiation of the high voltage transformer 8.

As shown in fig. 6, the bottom of the insulating support 41 is hermetically connected to the top of the shielding shell 42 and forms the sealed cavity 6 in the shielding shell 42, and the lower portion of each discharge electrode 5 penetrates through the insulating support 41 and extends into the sealed cavity 6. Namely, the sealed cavity 6 is formed between the lower surface of the insulating support 41 and the upper surface of the bottom wall of the shielding shell 42 for installing the high-voltage transformer 8 and the plurality of high-voltage capacitors 7, and the insulating glue 9 and the transformer oil 10 are poured into the sealed cavity 6.

Preferably, an oil seal rubber ring 44 is disposed at the joint between the bottom of the insulating support 41 and the shielding shell 42 to enhance the sealing effect at the joint and prevent the transformer oil 10 from leaking.

The shielding case 42 of the present invention is made of a metal material, and a plurality of heat dissipation ribs 421 for increasing a heat dissipation area are disposed on an outer surface thereof, so as to improve a heat dissipation effect.

As shown in fig. 8 and 9, each high-voltage capacitor 7 in the high-voltage pack 4 of the present invention is provided with an upper terminal 71 and a lower terminal 72, wherein the upper terminal 71 is electrically connected to the bottom of a discharge electrode 5, and the lower terminal 72 is electrically connected to a high-voltage transformer 8. Namely, two terminals on the high-voltage capacitor 7 are arranged in an up-and-down layout manner, so that the discharge electrode 5 in the high-voltage pack 4 and the high-voltage transformer 8 are conveniently isolated and connected. Furthermore, the upper terminal 71 and the lower terminal 72 of the high-voltage capacitor 7 are arranged in a staggered manner, namely, the projections of the upper terminal and the lower terminal on the horizontal plane are staggered, so that the distance between the upper terminal and the lower terminal is increased, and after the insulating glue 9 is poured, the creepage distance is increased to prevent creepage.

Preferably, the upper terminal 71 of each high-voltage capacitor 7 and the portion of each discharge electrode 5 in the sealed cavity 6 are completely covered by the insulating glue 9. I.e. the upper space in the sealed cavity 6, the upper terminal 71 of each high-voltage capacitor 7 and each discharge electrode 5 extending into the sealed cavity 6 are encapsulated by the insulation paste 9.

It is understood that the lower terminal 72 of each high-voltage capacitor 7 of the present invention may be completely covered by the insulation paste 9, i.e. the thickness of the insulation paste 9 poured into the upper space of the sealed cavity 6 completely submerges the upper and lower terminals of the high-voltage capacitor 7. This can further enhance the anti-creep effect.

As shown in fig. 5, it is preferable that a common power ring 43 is provided between the lower side of the plurality of high-voltage capacitors 7 and the upper side of the high-voltage transformer 8 in the high-voltage package 4 of the present invention, the high-voltage transformer 8 is electrically connected to the common power ring 43, and the lower terminal 72 of each of the high-voltage capacitors 7 is electrically connected to the common power ring 43.

The arrangement of the common power supply ring 43 enables the high-voltage transformer 8 to be connected with the common power supply ring 43 only by one outgoing line, and then the lower connection end 72 of each high-voltage capacitor 7 is uniformly connected to the common power supply ring 43, so that the wiring is saved, the complexity of circuit arrangement and connection in the high-voltage package 4 is greatly reduced, meanwhile, the common power supply ring 43 is circularly arranged, the lower connection end 72 of each high-voltage capacitor 7 can be connected with the common power supply ring 43 by the shortest distance, and the interference of wiring between two adjacent high-voltage capacitors 7 is avoided.

Further, as shown in fig. 7 and 10 in combination, the edge of the insulating support 41 of the plasma cooker 100 of the present invention is provided with an anti-creeping skeleton 411 protruding downward in the sealing chamber 6.

Because the shielding shell 42 is generally grounded, the high-voltage part (the high-voltage transformer 8 and the high-voltage capacitor 7) in the high-voltage pack 4 has potential difference with the shielding shell 42, and creepage can be carried out along the inner surface of the insulating support 41, and the creepage is carried out along the surface of an insulating object and is limited by creepage distance, if the creepage distance is too long, creepage can be avoided, and the creepage preventing framework 411 is annularly and convexly arranged in the sealing cavity 6 downwards at the edge of the insulating support 41. The creepage preventing skeleton 411 increases the creepage distance of the high voltage part in the sealed chamber 6 to the shield case 42, so that the creepage phenomenon can be prevented from occurring to protect the insulating support 41.

The height of the anti-creeping skeleton 411 of the embodiment of the invention is more than or equal to 40 mm. According to experimental tests, when the creepage distance is more than or equal to 80mm, the creepage can be effectively prevented, and when the height of the creepage-proof framework 411 is more than or equal to 40mm, the creepage distance obtained by adding the two surfaces of the creepage-proof framework is more than or equal to 80mm, so that the creepage can be well prevented.

Preferably, the anti-creep skeleton 411 is provided with an inner layer and an outer layer, and comprises an inner layer anti-creep skeleton 4111 and an outer layer anti-creep skeleton 4112, wherein a first anti-creep groove 412 is formed between the inner layer and the outer layer of anti-creep skeleton 411. Since the creeping arc cannot directly cross the cavity between the first anticreeper cells 412 and must travel along the surface of the first anticreeper cells 412, the first anticreeper cells 412 further prevent creeping.

Further, a second anti-creeping groove 413 is further arranged between the anti-creeping skeleton 4112 on the outer layer of the insulating support 41 and the inner wall of the shielding shell 42. The second anti-creep groove 413 further increases the creepage distance, and effectively prevents creepage.

In the invention, insulating glue is poured at the position where each discharge electrode 5 penetrates through the insulating support 41. This can prevent creepage between the end discharge electrodes 5 on the insulating support 41. Preferably, as shown in fig. 10, each discharge electrode 5 is provided with a connection nut 45 at a position penetrating through the insulating support 41, screw holes are provided at both upper and lower ends of the connection nut 45, the upper end of the connection nut 45 is screwed to the discharge electrode 5, and the lower end is connected to the upper terminal 71 of the high-voltage capacitor 7, so that the discharge electrode 5 and the upper terminal 71 of the high-voltage capacitor 7 can be connected quickly. And the position of the connecting nut 45 penetrating through the insulating support 41 is filled with insulating glue. The bottom surface of the insulating support 41 is also provided with a mounting seat 46 for mounting a common power supply ring.

As shown in fig. 11, the insulation support 41 of the plasma cooker 100 of the present invention is further provided with a liftable grounding probe 16, and the liftable grounding probe 16 is provided with an elastically liftable protruding end 161 protruding upwards for elastically contacting with the bottom of the pot 200, so as to ensure that the pot 200 is always grounded during use. There are 3 elastic contact on the pan lock ring 11 for the pan can with its good contact, even be afraid of the pan to have slight movement. The pan support ring 11 is electrically connected to the switching power supply and control circuit 3 for detecting whether a pan is placed on the plasma cooker 100.

After the cookware 200 is placed on the plasma cooker 100, the bottom surface of the cookware 200 is in elastic contact with the extending end 161 of the lifting grounding probe 16, and the bottom surface of the cookware 200 is also in contact with the cookware support ring 11, which is equivalent to the cookware 200 electrically connecting the lifting grounding probe 16 with the cookware support ring 11, thereby providing a signal to the control circuit that the cookware 200 is placed on the plasma cooker 100, and the control circuit receives the firing instruction, otherwise, the control circuit does not receive the firing instruction. Whether the cookware 200 is on the plasma cooker 100 or not is judged in such a way, once the cookware 200 leaves the cookware support ring 11 of the cooker, the cookware is immediately turned off to realize safe use, meanwhile, through reasonable stroke design of the liftable grounding probe 16, the cookware is still kept in contact with the grounding probe 16 after the fire is turned off so as to keep good grounding, and the situation that the control circuit is turned off after the grounding is disconnected is completely avoided, so that the use safety is ensured; moreover, even if the fire is turned off, the electric shock danger of the user is not caused because the liftable grounding probe 16 always keeps the grounding of the cookware in the stroke range; furthermore, through the reasonable stroke design of the liftable grounding probe 16, the user can slightly tilt the pot (the pot tilting means lifting the pot and jolting repeatedly to enable the cooked food to be heated sufficiently) without flameout, so that the cooking experience is better.

Specifically, the switching power supply and control circuit 3 of the present invention further comprises a cooker detection circuit. The pot detection circuit detects whether the pot 200 is placed on the plasma cooker 200 or not and whether the pot 200 is connected with the liftable grounding probe 16 and the pot support ring 11 or not, and the power supply is switched off under the control of the switching power supply and control circuit 3 once the pot 200 is connected with the liftable grounding probe 16 and the pot support ring 11. Thereby ensuring the use safety.

According to the plasma stove 100 with the anti-creeping high-voltage package structure, provided by the embodiment of the invention, the plurality of high-voltage capacitors 7 are isolated from each other by the insulating glue 9 filled in the upper space in the high-voltage package 4, and the transformer oil 10 is filled in the lower space in the high-voltage package 4 to completely surround and seal the high-voltage transformer 8, so that creeping in the high-voltage package 4 can be effectively prevented, the safety of the plasma stove 100 in power utilization is guaranteed, and the service life of the high-voltage package 4 is prolonged. Meanwhile, the transformer oil 10 has good fluidity, so that the heat in the cavity is easy to dissipate to the shielding shell 42 made of metal, and then the heat of the high-voltage package is quickly dissipated through the air blowing cooling of the cooling fan 15.

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. A plasma stove with an anti-creeping high-voltage bag structure comprises a base, a stove head arranged on the base, a switching power supply and a control circuit, wherein the switching power supply and the control circuit are arranged on the base;

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

2. The plasma cooker of an anti-creep high-voltage package structure according to claim 1, wherein the high-voltage package comprises an insulating support, a shielding case, and the high-voltage transformer and a plurality of high-voltage capacitors arranged in parallel;

3. The plasma cooker of claim 2, wherein a common power ring is disposed between a lower portion of the plurality of high voltage capacitors and an upper portion of the high voltage transformer in the high voltage package, the high voltage transformer is electrically connected to the common power ring, and a lower terminal of each of the high voltage capacitors is electrically connected to the common power ring.

4. The plasma cooker of claim 2, wherein the upper terminal of each high voltage capacitor and the portion of each discharge electrode in the sealed cavity are completely covered by the insulating paste.

5. The plasma cooker of claim 2, wherein the edge of the insulating support is provided with an anti-creeping skeleton protruding downwards in the sealing cavity.

6. The plasma cooker of an anti-creep high-voltage package structure according to claim 5, wherein the anti-creep skeleton is provided with an inner layer and an outer layer, and a first anti-creep groove is formed between the inner and outer layers of anti-creep skeletons.

7. The plasma cooker with the anti-creeping high-voltage bag structure according to claim 6, wherein a second anti-creeping groove is further arranged between the anti-creeping skeleton located at the outer layer of the insulating support and the inner wall of the shielding shell.

8. The plasma cooker of an anti-creep high-voltage package structure according to claim 5, wherein the anti-creep skeleton height is 40mm or more.

9. The plasma stove with the anti-creeping high-voltage bag structure according to claim 2, wherein an insulating glue is poured into a position where each of the discharge electrodes penetrates through the insulating support.

10. The plasma cooker with the anti-creeping high-voltage bag structure as claimed in claim 2, wherein the insulating support is further provided with a liftable grounding probe, and the liftable grounding probe is provided with an extending end capable of being elastically lifted and downwards in an upward protruding manner to be in elastic contact with the bottom of the cookware, so that the cookware is well grounded.