Electric gas range

Abstract

The application relates to an electric gas stove which comprises a shell, a power module, a rectifier module and a burner; the power module and the rectifier module are both installed in the shell and electrically connected, and the shell is provided with a connecting port for installing the burner; the burner comprises an electrode plate, a plurality of plasma needle assemblies and a pot ring; the pot ring surrounds the electrode plate and is fixedly connected with the shell, the electrode plate is provided with a plurality of spray pipes and is electrically connected with the rectifier module; the plurality of plasma needle assemblies are arranged in one-to-one correspondence with the plurality of spray pipes; the plasma needle assembly comprises a plasma needle, a plasma head and an insulating tube; a coaxial boss is arranged on an end wall of the insulating tube, the insulating tube is coaxially installed on the spray pipe, the boss is arranged in the spray pipe, and the outer wall of the boss, the end wall of the insulating tube and the inner wall of the spray pipe surround to form a water passing groove; one end of the plasma needle penetrates through the insulating tube and the boss and is connected with the plasma head, and the other end is electrically connected with the rectifier module.

Description

Technical Field

[0001] This invention relates to the field of electric gas stove technology, and more particularly to an electric gas stove. Background Technology

[0002] Electric gas stoves or electric fire stoves utilize the properties of plasma. High-voltage electricity breaks down the air to form thermal plasma, converting electrical energy into heat energy, and ultimately obtaining a thermal plasma beam with ideal functions. This thermal plasma beam, with flame-like characteristics, is used to heat cookware for cooking.

[0003] Existing electric gas stoves generate heat by ionizing air between a plasma head and a nozzle. The plasma head is connected to an internal power source via a plasma needle. However, during cooking or cleaning, liquids such as soup can easily spill into the burner. The accumulation of liquid in the burner can soak the plasma needle, causing it to short-circuit and thus reducing the lifespan of the electric gas stove. Summary of the Invention

[0004] In view of this, the present invention provides an electric gas stove to solve the problem of reduced service life caused by poor waterproof performance of existing electric gas stoves.

[0005] To achieve one, some, or all of the above objectives, or other objectives, the present invention proposes:

[0006] An electric gas stove includes a casing, a power supply module, a rectifier module, and a burner head;

[0007] Both the power supply module and the rectifier module are installed inside the housing, and the power supply module is electrically connected to the rectifier module. The housing is provided with a connection port for installing the burner head.

[0008] The burner head includes an electrode plate, multiple plasma needle assemblies, and a pot ring;

[0009] The pot ring surrounds the electrode plate and is fixedly connected to the outer shell. The electrode plate is provided with multiple nozzles and is electrically connected to the rectifier module.

[0010] Each of the plasma needle assemblies is configured in a one-to-one correspondence with a plurality of nozzles;

[0011] The plasma needle assembly includes a plasma needle, a plasma head, and an insulating tube;

[0012] The insulating tube has a coaxial boss on its end wall. The insulating tube is coaxially mounted on the nozzle. The boss is placed inside the nozzle, and the outer wall of the boss, the end wall of the insulating tube, and the inner wall of the nozzle form a water passage groove. One end of the plasma needle passes through the insulating tube and the boss is connected to the plasma head. The other end is electrically connected to the rectifier module.

[0013] Furthermore, the burner head also includes a base and a mica plate. The base is fixed to the lower side of the electrode plate and has a groove. The mica plate covers the groove to form an air cavity. The base has multiple through holes, each corresponding to one of the electrode assemblies. The mica plate also has an air inlet for connecting to a ventilation source.

[0014] The insulating tube has a blowing channel on its wall, and the blowing channel has an air outlet that connects to the water tank and an air inlet that connects to the air cavity.

[0015] Furthermore, the burner head also includes a blower box, which is installed inside the outer shell and fits against the bottom of the electrode plate. The blower box has an air cavity designed to open towards the electrode plate. The blower box also has an air inlet for connecting to a ventilation source.

[0016] The insulating tube has a blowing channel on its wall, and the blowing channel has an air outlet that connects to the water tank and an air inlet that connects to the air cavity.

[0017] Furthermore, the air inlet of the air blowing channel is located on the outer wall or bottom wall of the insulating tube.

[0018] Furthermore, the blowing channel is provided in multiple ways, and the multiple blowing channels are evenly distributed along the circumference of the insulating tube. The blowing channel is inclined on the tube wall of the insulating tube. Any cross-section of the blowing channel is circular, and the area of ​​the air outlet of the blowing channel is smaller than the area of ​​the air inlet of the blowing channel.

[0019] Furthermore, the rectifier module includes a receiving box and a cover plate with an opening on one side. The receiving box contains multiple rectifier circuit boards. The cover plate closes and seals the opening of the receiving box. The receiving box is encapsulated with insulating cooling oil.

[0020] Furthermore, the cover plate is provided with a sealing block, the sealing block is embedded in the opening of the receiving box, the outer wall of the sealing block is provided with a first groove, and the end wall of the receiving box that fits against the cover plate is provided with a second groove, and both the first groove and the second groove are provided with sealing strips;

[0021] The cover plate is also provided with multiple cable outlet holes, and multiple wires are connected to the rectifier circuit board. The multiple wires pass through the cable outlet holes one by one, and a sealing ring is provided inside the cable outlet holes.

[0022] Furthermore, the inner wall of the receiving box has multiple fixing slots, which are parallel to each other and spaced apart, and the multiple rectifier circuit boards are inserted into the fixing slots one by one.

[0023] Furthermore, the electrode plate is a flat plate structure or an arc plate structure, the electrode plate is provided with a drain outlet, and the outer shell is provided with a drain pipe for connecting the drain outlet.

[0024] Furthermore, it also includes a clean water basin, and the outer shell end face is provided with an installation port. The edge of the installation port is designed with a rounded arch, and the edge of the clean water basin is provided with a rounded flange corresponding to the edge of the installation port. The clean water basin is embedded in the installation port.

[0025] Implementing the embodiments of the present invention will have the following beneficial effects:

[0026] This electric gas stove features a protrusion on the end wall of the insulating tube. The outer wall of the protrusion, the end wall of the insulating tube, and the inner wall of the spray nozzle form a water-passing groove. When liquids such as soup enter the spray nozzle, they flow into the water-passing groove and cannot directly soak into the plasma needle through the gap between the plasma head and the protrusion. This avoids the situation where the plasma needle is directly soaked in liquid after cooking or cleaning when liquids such as soup enter the spray nozzle. As a result, when the electric gas stove is started, the plasma needle is in a dry state without being soaked in liquid, enabling normal operation. This solves the technical problem of reduced service life caused by inadequate waterproofing measures for the plasma needle in traditional electric gas stoves. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application;

[0029] Figure 2 This is an exploded view of the overall structure in Embodiment 1 of this application;

[0030] Figure 3 This is a schematic diagram of the burner head structure in Embodiment 1 of this application;

[0031] Figure 4 This is an exploded view of the furnace head structure in Embodiment 1 of this application;

[0032] Figure 5 This is a schematic diagram of the plasma needle assembly and nozzle structure in Embodiment 1 of this application;

[0033] Figure 6 This is an exploded view of the plasma needle assembly and nozzle structure in Embodiment 1 of this application;

[0034] Figure 7 This is a cross-sectional view of the ion needle assembly and nozzle structure in Embodiment 1 of this application;

[0035] Figure 8 This is a partial cross-sectional view of the insulating tube in Embodiment 1 of this application;

[0036] Figure 9 This is a schematic diagram of the rectifier module structure in Embodiment 1 of this application;

[0037] Figure 10 This is an exploded view of the rectifier module in Embodiment 1 of this application;

[0038] Figure 11 This is a schematic diagram of the cover plate structure in Embodiment 1 of this application;

[0039] Figure 12 This is a schematic diagram of the receiving box structure in Embodiment 1 of this application;

[0040] Figure 13 This is a schematic diagram of the base and mica plate structure in Embodiment 1 of this application.

[0041] Figure 14 This is a schematic diagram of the overall structure in Embodiment 2 of this application;

[0042] Figure 15 This is an exploded view of the overall structure in Embodiment 2 of this application;

[0043] Figure 16 This is a schematic diagram of the burner head structure in Embodiment 2 of this application;

[0044] Figure 17 This is a schematic diagram of the rectifier module structure in Embodiment 2 of this application;

[0045] Figure 18 This is a schematic diagram showing the separation of the rectifier module structure in Embodiment 2 of this application;

[0046] Figure 19 This is a schematic diagram of the furnace head structure separation in Embodiment 2 of this application.

[0047] Figure label:

[0048] 1. Outer shell, 10. Drain pipe, 11. Connection port, 12. Mounting port, 13. Clean water basin, 2. Rectifier module, 20. Power module, 21. Receiving box, 210. Fixing groove, 211. Second groove, 22. Cover plate, 220. Sealing block, 221. First groove, 222. Outlet hole, 23. Rectifier circuit board, 24. Sealing strip, 3. Burner head, 30. Base, 31. Mica plate, 4. Electrode plate, 40. Wiring thread hole, 41. Drain outlet, 5. Plasma needle assembly, 50. Plasma head, 51. Plasma needle, 52. Insulating tube, 520. Air blowing hole, 53. Boss, 530. Water channel, 6. Pot ring, 7. Spray pipe, 8. Blower box, 80. Air inlet, 81. Turbine fan, 9. Mica gasket. Detailed Implementation

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0052] Example 1:

[0053] See appendix Figure 1 - Appendix Figure 13 This embodiment discloses an electric gas stove, which includes a shell 1, a power module 20, a rectifier module 2, and a burner head 3. The power module 20 and the rectifier module 2 are both installed inside the shell 1, and the power module 20 is electrically connected to the rectifier module 2. The shell 1 is provided with a connection port 11 for installing the burner head 3. The burner head 3 includes an electrode plate 4, multiple plasma needle assemblies 5, and a pot ring 6. The pot ring 6 surrounds the electrode plate 4 and is fixedly connected to the shell 1. The electrode plate 4 is provided with multiple nozzles 7, and the electrode plate 4 is electrically connected to the rectifier module 2. The multiple plasma needle assemblies 5 are arranged one-to-one with the multiple nozzles 7. The plasma needle assembly 5 includes a plasma needle 51, a plasma head 50, and an insulating tube 52.

[0054] The insulating tube 52 has a coaxial boss 53 on its end wall. The insulating tube 52 is coaxially mounted on the nozzle 7. The boss 53 is placed inside the nozzle 7, and the outer wall of the boss 53, the end wall of the insulating tube 52, and the inner wall of the nozzle 7 form a water passage groove 530. One end of the plasma needle 51 passes through the insulating tube 52 and the boss 53 and is connected to the plasma head 50. The other end is electrically connected to the rectifier module 2.

[0055] Specifically, both the electrode plate 4 and the nozzle 7 are conductive metals. The electrode plate 4 is electrically connected to the rectifier module 2, and the plasma needle 51 is electrically connected to the rectifier module 2. This allows the plasma head 50 and the nozzle 7 to ionize air and generate heat to heat the pot placed on the pot ring 6. The plasma head 50 has an overall conical design and is completely placed inside the nozzle 7 to ensure sufficient ionization of air and heat generation. The upper part of the nozzle 7 has a conical tube structure, allowing liquids such as soup to flow along the outer wall of the nozzle 7 onto the electrode plate 4 without easily entering the nozzle 7 and affecting the normal operation of the plasma needle 51. The lower part of the nozzle 7 has an external thread for connecting to the electrode plate 4. The boss 53 is integrally formed on the insulating tube 52, which is made of high-temperature resistant ceramic material to prevent damage to the plasma needle 51 caused by ionization between the plasma needle 51 and the insulating tube 52. In this embodiment... In this example, a boss 53 is designed on the end wall of the insulating tube 52, and the outer wall of the boss 53, the end wall of the insulating tube 52, and the inner wall of the nozzle 7 form a water passage groove 530. After the plasma head 50 is installed inside the nozzle 7 via the plasma needle 51, the bottom of the plasma head 50 is in contact with the end face of the boss 53. Due to the action of the boss 53, there is a gap between the plasma head 50 and the bottom of the water passage groove 530 (i.e., the end wall of the insulating tube 52). When liquids such as soup enter the nozzle 7, they will flow into the water passage groove 530. The plasma needle 51 cannot be directly immersed in the gap between the plasma head 50 and the boss 53, thus avoiding the situation where the plasma needle 51 is directly immersed in liquid after cooking or cleaning when liquids such as soup enter the nozzle 7. This ensures that when the electric stove is started later, the plasma needle 51 is in a dry state without being immersed in liquid, enabling normal operation. This solves the technical problem of reduced service life of traditional electric stoves due to inadequate waterproofing measures for the plasma needle 51.

[0056] In this embodiment, the outer diameter of the plasma head 50 is greater than or equal to the outer diameter of the boss 53, so that when liquids such as soup are spilled into the nozzle 7, the liquid will directly enter the water tank 530, and will not accumulate on the end face of the boss 53 that contacts the plasma head 50. This avoids the situation where liquid enters the inner hole of the insulating tube 52 through the end face of the boss 53 and soaks the plasma needle 51.

[0057] See appendix Figure 4 and attached Figure 13In this embodiment, the electrode plate 4 has a flat plate structure and is mainly used in household electric gas stoves. Since the internal structure of a household electric gas stove is relatively compact, and the electrode plate 4 experiences high temperatures during operation, to avoid the high temperature affecting the normal operation of the internal rectifier module 2, and to facilitate simultaneous air supply to the air blowing channels 520 of multiple insulating tubes 52, the burner head 3 in this embodiment also includes a base 30 and a mica plate 31. The base 30 is fixed to the lower side of the electrode plate 4, and the base 30 has a groove. The mica plate 31 covers the groove to form an air cavity. The base 30 has multiple through holes. Each hole corresponds one-to-one with a multiple plasma needle assembly 5. The mica plate 31 also has an air inlet 80 for connecting to a ventilation source. Specifically, a fan can be installed at the air inlet 80, or a fan can be placed in other locations on the electric stove, and then connected to the air inlet 80 of the ventilation cavity via an air duct to achieve a continuous supply of air to the ventilation cavity. To facilitate the connection between the ventilation cavity and the air blowing channels 520 of the multiple insulating tubes 52, the base 30 also has multiple through holes, allowing air from the ventilation cavity to enter the nozzle 7 through the through holes and air blowing channels 520, thus propelling the heat inside the nozzle 7 outwards. Furthermore, the base 30 and mica plate 31 support the electrode plate 4, effectively isolating the heat from the electrode plate 4 and preventing the high temperature of the electrode plate 4 from affecting the electrical components inside the electric stove.

[0058] To ensure that the heat from the nozzle 7 can be fully expelled to heat the cookware, and to prevent liquid from accumulating in the water tank 530, this embodiment has a blowing channel 520 on the wall of the insulating tube 52. When liquid enters the water tank 530, it will be quickly discharged through the blowing channel 520, preventing liquid from accumulating in the water tank 530 and reducing the risk of the plasma needle 51 being soaked, so as to facilitate the stable start-up of the electric stove. In actual operation of the electric stove, a fan can be installed at the air inlet 80 of the blower box 8 to continuously provide airflow to the air chamber. The air in the air chamber enters the nozzle 7 through the air inlet of the blowing channel 520, thereby driving the heat from the nozzle 7 to be expelled outward, so as to quickly transfer the heat from the nozzle 7 to the cookware for heating.

[0059] It should also be noted that the air inlet of the blowing channel 520 can be opened on the outer wall or the bottom wall of the insulating tube 52. Specifically, the air inlet of the blowing channel 520 can be opened on the outer wall or the bottom wall of the insulating tube 52 according to the air supply direction of the air cavity. In this embodiment, since the air source of the air cavity is provided through the air inlet opened at the bottom of the blower box 8, the air in the air cavity flows from bottom to top, that is, from the air inlet 80 to the bottom wall of the insulating tube 52. Therefore, the air inlet of the blowing channel 520 is preferably opened on the bottom wall of the insulating tube 52 so as to facilitate the flow of air in the air cavity into the blowing channel 520, thereby realizing the effective ejection of heat from the inside of the nozzle 7.

[0060] See appendix Figure 6 - Appendix Figure 8 Multiple air blowing channels 520 are provided, and the multiple air blowing channels 520 are evenly distributed along the circumference of the insulating tube 52. Any cross-section of the air blowing channel 520 is circular, and the area of ​​the air outlet of the air blowing channel 520 is smaller than the area of ​​the air inlet of the air blowing channel 520. By opening multiple air blowing channels 520 on the wall of each insulating tube 52, the air volume of the air chamber to the nozzle 7 is increased, and the heat in the nozzle 7 is driven to the cookware with a larger air volume. Correspondingly, in this embodiment, the area of ​​the air outlet of the air blowing channel 520 is designed to be smaller than the area of ​​its air inlet. While ensuring the air volume of each air blowing channel 520, the air force at the air outlet of each air blowing channel 520 is improved by the air duct design with one end larger than the other, so that the heat of the nozzle 7 can be transferred to the cookware more quickly.

[0061] Furthermore, the air blowing channel 520 is inclined on the wall of the insulating tube 52. The projection of the air outlet of the air blowing channel 520 onto the bottom wall of the insulating tube 52 does not completely coincide with the projection of the air inlet of the air blowing channel 520 onto the bottom wall of the insulating tube 52. That is, the inclination angle of the air blowing channel 520 on the insulating tube 52 is different, and the overlap of the projections of the openings at both ends of the air blowing channel 520 on the same plane is different. When the inclination degree of the air blowing channel 520 is large, the projection of the air outlet of the air blowing channel 520 onto the bottom wall of the insulating tube 52 and the projection of the air inlet of the air blowing channel 520 on the same plane are not completely coincident. When the projections on the bottom wall of the insulating tube 52 are not coincident, and the inclination of the air blowing channel 520 is small, the projections of the air outlet of the air blowing channel 520 on the bottom wall of the insulating tube 52 and the projections of the air inlet of the air blowing channel 520 on the bottom wall of the insulating tube 52 partially coincide. Through multiple obliquely distributed air blowing channels 520, the air in the air cavity forms multiple oblique air streams after passing through the insulating tube 52. These multiple oblique air streams converge in the nozzle 7 to form a spiral wind. This spiral wind blows out heat more powerfully and quickly, improving the heating effect of the electric gas stove.

[0062] Since the electrode plate 4 is hot during operation, in order to prevent the electrode plate 4 from damaging the pot ring 6, the electric stove also includes a mica gasket 9. The mica gasket 9 has a ring structure and is attached to the pot ring 6 to connect the pot ring 6 and the electrode plate 4.

[0063] In this embodiment, the power module 20 is equipped with a power supply and a transformer, which is used to convert the normal pressure AC power into high pressure AC power and transmit it to the rectifier module 2. The rectifier circuit board 23 inside the rectifier module 2 converts it into multiple high pressure DC power and one zero voltage power. The multiple high pressure DC power is connected to the plasma needle 51 one by one, and the zero voltage power is connected to the electrode plate 4.

[0064] See appendix Figure 9 - Appendix Figure 12To ensure the normal operation of the rectifier module 2, the rectifier module 2 includes a receiving box 21 with an opening on one side and a cover plate 22. Multiple rectifier circuit boards 23 are housed inside the receiving box 21. The cover plate 22 covers and seals the opening of the receiving box 21. The receiving box 21 is encapsulated with insulating cooling oil. Specifically, various electronic components such as resistors and capacitors are connected to the rectifier circuit boards 23. When the rectifier module 2 is working, these electronic components generate heat. In addition, multiple wires are electrically connected to the rectifier circuit boards 23. These wires conduct the high temperature generated by the plasma needle assembly 5 and the nozzle 7 to the housing composed of the receiving box 21 and the cover plate 22, resulting in a high temperature inside the housing. This high temperature can affect the normal operation of the rectifier circuit boards 23. When the housing is encapsulated with insulating cooling oil, due to the high specific heat capacity of the oil, the insulating cooling oil can absorb more heat and conduct it to the metal receiving box 21. The metal material has good thermal conductivity, allowing the heat to be conducted to the outside more quickly, thus cooling the rectifier circuit boards 23.

[0065] It should also be noted that a cooling fan can be installed inside the outer casing 1 of the electric gas stove to further dissipate heat from the rectifier module 2. For example, a fixed box can be installed outside the casing, and multiple cooling fans can be installed inside the fixed box, so that the air outlets of the cooling fans are directed towards the side wall of the housing box 21. Although this method will generate noise, it can further reduce the temperature of the rectifier circuit board 23, resulting in a better cooling effect.

[0066] See appendix Figure 11 The cover plate 22 is provided with a sealing block 220, which is embedded in the opening of the receiving box 21. Specifically, the shape of the sealing block 220 is the same as the shape of the inner wall of the opening of the receiving box 21, so that the outer wall of the sealing block 220 can fit against the inner wall of the receiving box 21. In order to further improve the sealing effect of the cover plate 22 on the receiving box 21, this embodiment also provides a first groove 221 on the outer wall of the sealing block 220, and a second groove 211 on the end wall of the receiving box 21 that fits against the cover plate 22. A sealing strip 24 is provided in both the first groove 221 and the second groove 211. Both the first groove 221 and the second groove 211 are circumferentially closed annular grooves, so that after the sealing strip 24 is embedded in the first groove 221 or the second groove 211, multiple seals can be achieved through two positions: the outer wall of the sealing block 220 and the inner wall of the receiving box 21, and the inner plate surface of the cover plate 22 and the end wall of the receiving box 21. This makes the cover plate 22 and the receiving box 21 fit more tightly, reduces the possibility of internal insulating cooling oil seeping out, and has a better waterproof effect. In this embodiment, the sealing strip 24 is preferably made of silicone or rubber, which, in addition to improving the sealing effect, can also play a certain role in heat insulation.

[0067] It should also be noted that in this embodiment, multiple threaded holes are provided on the end wall of the receiving box 21, and multiple through holes are provided on the cover plate 22 accordingly. Multiple fixing screws are connected to the multiple through holes and multiple threaded holes on the cover plate 22 one by one, so that the assembly between the cover plate 22 and the receiving box 21 is more stable. In addition, sealant can be provided at the connection between the fixing screws and the threaded holes and through holes to further improve the sealing effect of the cover plate 22 on the receiving box 21.

[0068] In addition to the sealing and waterproofing effect brought about by the assembly between the cover plate 22 and the receiving box 21, the insulating cooling oil encapsulated inside the receiving box 21 can also play a role in isolating air and waterproofing. When the electric stove is in a relatively humid environment, the rectifier circuit board 23 is working in a high humidity environment for a long time, which can easily be damaged or even short-circuited, causing safety hazards. The insulating cooling oil can not only insulate the rectifier circuit board 23 from the environment, but also fill the gaps and isolate the influence of moisture. Even if water enters the receiving box 21, since water and insulating cooling oil are immiscible, the density of water is less than the density of oil, and the insulating cooling oil is set to submerge the rectifier circuit board 23, the water will float on the surface of the insulating cooling oil and will not affect the operation of the rectifier circuit board 23.

[0069] See appendix Figure 11 The cover plate 22 is also provided with multiple wire outlet holes 222. Multiple wires are connected to the rectifier circuit board 23, and the multiple wires pass through the wire outlet holes 222 one by one. A sealing ring is also provided in the wire outlet hole 222. Specifically, one end of the multiple wires is connected to the rectifier circuit board 23, and the other end is connected to the plasma needle 51 or the electrode plate 4. In order to ensure the sealing of the container 21, this embodiment designs multiple wire outlet holes 222 on the cover plate 22 and provides sealing rings in the wire outlet holes 222. After the wires pass through the wire outlet holes 222 and the sealing rings, sealant can also be applied at the connection to further improve the sealing of the container.

[0070] See appendix Figure 12 The inner wall of the receiving box 21 has multiple fixing slots 210, which are parallel to each other and spaced apart. Multiple rectifier circuit boards 23 are inserted into the fixing slots 210 one by one. The number of rectifier circuit boards 23 depends on the purpose of the electric stove. In this embodiment, since the electric stove is a household electric stove, the required firepower is small, that is, the number of nozzles 7 required is small. Therefore, two rectifier circuit boards 23 are preferred. Correspondingly, two fixing slots 210 are set. Specifically, the fixing slots 210 are opened on the two opposite inner walls of the receiving box 21, and the two ends of the fixing slots 210 are spaced from the cover plate 22 and the bottom wall of the receiving box 21, so that the rectifier circuit boards 23 are suspended in the receiving box 21, so as to ensure that the insulating cooling oil of the receiving box 21 completely covers the rectifier circuit boards 23.

[0071] In this embodiment, the rectifier circuit board 23 is perpendicular to the bottom wall of the housing box 21 and the cover plate 22. The wires are all electrically connected to the upper end of the rectifier circuit board 23, and the position of the wires corresponds to the wire outlet hole 222 on the cover plate 22, so that the length of the wires can be shorter and the wiring is not too messy. By setting two parallel fixing slots 210, the two rectifier circuit boards 23 are parallel to each other, which provides space for the capacitors, resistors or inductors set on the rectifier circuit boards 23, and the cooling insulating oil is also encapsulated between the two rectifier circuit boards 23, resulting in better cooling effect.

[0072] By setting multiple rectifier circuit boards 23, the area occupied by a single rectifier circuit board 23 is smaller, which in turn makes the volume of the housing 21 smaller and reduces the amount of insulating cooling oil used, saving costs and space, and making it easier to install the rectifier module 2 inside the outer shell of the electric stove.

[0073] In addition, since the electrode plate 4 and the nozzle 7 are exposed objects that are easily touched by users, this embodiment connects zero volts to the electrode plate 4 and the nozzle 7 to prevent users from getting electric shock, which is safer.

[0074] To improve the electrical safety of the electric stove, the electric stove also includes a ground wire. The electrode plate 4 has a wiring thread hole 40 on its edge. The ends of the wires and ground wires on the rectifier module 2 are provided with terminals. The wires and ground wires can be fixed to the wiring thread hole 40 by metal screws. The terminals of the wires and ground wires can be quickly fixed to the electrode plate 4 by a single metal screw.

[0075] It should also be noted that the wires, terminals, and metal screws are all direct applications of existing technology and are not shown in the accompanying drawings of this embodiment.

[0076] Example 2:

[0077] This embodiment only describes the differences in Embodiment 1.

[0078] See appendix Figure 14 - Appendix Figure 19The electrode plate 4 has an arc-shaped structure, and a drain outlet 41 is provided at the center of the electrode plate 4. A drain pipe 10 for connecting the drain outlet 41 is provided inside the outer shell 1. In this embodiment, the structure of this electric gas stove is mainly used in commercial integrated stoves, that is, the outer shell 1 is the outer shell 1 of the integrated stove. The outer shell 1 also has structures such as a range hood (not described in detail in this embodiment). Commercial integrated stoves often require greater firepower, and commercial integrated stoves generally use round-bottomed iron pots for cooking. Therefore, in this embodiment, the electrode plate 4 is set as an arc-shaped structure, and multiple nozzles 7 are evenly distributed on the electrode plate 4. The multiple nozzles 7 are all facing the center of the arc-shaped structure to heat the round-bottomed iron pot. In order to facilitate the installation of the electrode plate 4, the edge of the electrode plate 4 is formed into a flat edge through a flange process, and the edge of the electrode plate 4 is fixed to the connection port 11 of the outer shell 1 by bolts.

[0079] Since this electric gas stove is a commercial integrated stove, to further improve the firepower, the burner head 3 also includes a blower box 8. The blower box 8 is installed inside the outer shell 1 and is attached to the bottom of the electrode plate 4. The blower box 8 has an air chamber designed to open towards the electrode plate 4. The blower box 8 also has an air inlet 80 for connecting to the air source. By designing a larger air chamber, and simultaneously supplying air to the air channels 520 of multiple insulating tubes 52, a turbine fan 81 can also be installed inside the outer shell 1. The turbine fan 81 is connected to the air inlet 80 of the blower box 8 through an air guide pipe, thereby quickly spraying out the heat from each nozzle 7. It should also be noted that since this electric gas stove is used in shops, cooking operations such as tossing the pan are often required, which can easily lead to spillage of soup. A drain outlet 41 is provided on the electrode plate 4, specifically located at the center of the electrode plate 4, i.e., the lowest point. A drain pipe 10 is installed inside the outer shell 1 to connect to the drain outlet 41, preventing soup from accumulating on the electrode plate 4 and causing malfunctions of the electric gas stove.

[0080] To facilitate cooking, the electric stove also includes a water basin 13. An installation port 12 is provided on the end face of the outer shell 1. The edge of the installation port 12 is designed with a rounded arch. The edge of the water basin 13 is provided with a rounded flange corresponding to the edge of the installation port 12. The water basin 13 is embedded in the installation port 12. Due to the rounded arch design, when the water in the water basin 13 overflows, it cannot enter the outer shell 1. A faucet can also be installed on the end face of the outer shell 1 to continuously provide water to the water basin 13.

[0081] See appendix Figure 16 and attached Figure 17 Since the electric stove provided in this embodiment is a commercial electric stove, which requires greater firepower, more nozzles 7 and plasma needle assemblies 5 are provided on the electrode plate 4. Correspondingly, more rectifier circuit boards 23 are provided in the housing box 21 of the rectifier module 2 to provide high voltage DC power to multiple plasma needles.

[0082] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An electric gas stove, characterized in that, Includes the casing, power module, rectifier module, and burner head; Both the power supply module and the rectifier module are installed inside the housing, and the power supply module is electrically connected to the rectifier module. The housing is provided with a connection port for installing the burner head. The burner head includes an electrode plate, multiple plasma needle assemblies, and a pot ring; The pot ring surrounds the electrode plate and is fixedly connected to the outer shell. The electrode plate is provided with multiple nozzles and is electrically connected to the rectifier module. Each of the plasma needle assemblies is configured in a one-to-one correspondence with a plurality of nozzles; The plasma needle assembly includes a plasma needle, a plasma head, and an insulating tube; The insulating tube has a coaxial boss on its end wall. The insulating tube is coaxially mounted on the nozzle. The boss is placed inside the nozzle, and the outer wall of the boss, the end wall of the insulating tube, and the inner wall of the nozzle form a water passage groove. One end of the plasma needle passes through the insulating tube and the boss is connected to the plasma head. The other end is electrically connected to the rectifier module. The rectifier module includes a housing and a cover with an opening on one side. The housing contains multiple rectifier circuit boards. The cover seals the opening of the housing. The housing contains insulating cooling oil.

2. An electric gas stove according to claim 1, characterized in that... The furnace head also includes a base and a mica plate. The base is fixed to the lower side of the electrode plate and has a groove. The mica plate covers the groove to form an air cavity. The base has multiple through holes, which correspond one-to-one with multiple plasma needle assemblies. The mica plate also has an air inlet for connecting to a ventilation source. The insulating tube has a blowing channel on its wall, and the blowing channel has an air outlet that connects to the water tank and an air inlet that connects to the air cavity.

3. An electric gas stove according to claim 1, characterized in that, The burner head also includes a blower box, which is installed inside the outer shell and fits against the bottom of the electrode plate. The blower box has an air cavity designed to open towards the electrode plate. The blower box also has an air inlet for connecting to a ventilation source. The insulating tube has a blowing channel on its wall, and the blowing channel has an air outlet that connects to the water tank and an air inlet that connects to the air cavity.

4. An electric gas burner as claimed in claim 2 or 3, characterized in that The air inlet of the air blowing channel is located on the outer wall or bottom wall of the insulating tube.

5. An electric gas stove according to claim 2 or 3, characterized in that, The blowing channel is provided in multiple ways, and the multiple blowing channels are evenly distributed along the circumference of the insulating tube. The blowing channel is inclined on the tube wall of the insulating tube. Any cross-section of the blowing channel is circular, and the area of ​​the air outlet of the blowing channel is smaller than the area of ​​the air inlet of the blowing channel.

6. An electric gas stove according to claim 1, characterized in that, The cover plate is provided with a sealing block, which is embedded in the opening of the receiving box. The outer wall of the sealing block is provided with a first groove, and the end wall of the receiving box that is in contact with the cover plate is provided with a second groove. Both the first groove and the second groove are provided with sealing strips. The cover plate is also provided with multiple cable outlet holes, and multiple wires are connected to the rectifier circuit board. The multiple wires pass through the cable outlet holes one by one, and a sealing ring is provided inside the cable outlet holes.

7. An electric gas stove according to claim 1, characterized in that, The inner wall of the receiving box has multiple fixing slots, which are parallel to each other and spaced apart. The multiple rectifier circuit boards are inserted into the fixing slots one by one.

8. An electric gas stove according to any one of claims 1-3, characterized in that, The electrode plate is a flat plate structure or an arc plate structure, and the electrode plate is provided with a drain port. The outer shell is provided with a drain pipe for connecting the drain port.

9. An electric gas stove according to any one of claims 1-3, characterized in that, It also includes a water basin, and the outer shell end face is provided with an installation port. The edge of the installation port is designed with a rounded arch. The edge of the water basin is provided with a rounded flange corresponding to the edge of the installation port. The water basin is embedded in the installation port.

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