Energy-saving and noise-reducing electric flame cooker

Abstract

This invention discloses an energy-saving and noise-reducing electric flame stove, comprising: a stove body, a burner assembly disposed on the top of the stove body, an energy-saving drive circuit module electrically connected to the burner assembly, an air intake device for air intake at the burner, and a blower for cooling the energy-saving drive circuit module. This invention achieves true energy savings by optimizing the air duct structure and rationally setting the angle of the flow-limiting orifice, thereby slowing airflow, enhancing ionization, and improving thermal efficiency. Simultaneously, the slowed airflow further reduces airflow noise. Through an independent double-grille air duct design, it balances heat dissipation and prevention of soup intrusion, while also considering electrode lifespan and operational safety, achieving highly efficient and energy-saving operation of the electric flame stove.

Description

Technical Field

[0001] This invention relates to electric flame stoves, and more specifically to energy-saving technological modifications for electric flame stoves. Background Technology

[0002] Electric flame stoves employ multiple high-voltage discharge devices (connected in parallel with positive and negative electrodes in a closed-circuit discharge configuration). Each device generates an electric field by blasting gas flow through high voltage. The gas flow collides with electrons in this electric field, ionizing the gas molecules and exciting plasma. This plasma, with a temperature exceeding 1000 degrees Celsius, is used to heat cookware. Currently, electric flame stoves on the market are also known as electric fire stoves, electric fire starter stoves, electric flame stoves, electric gas stoves, electric open flame stoves, plasma stoves, etc. All of these stoves utilize the working principle of high-voltage breakdown to excite plasma for heating cookware.

[0003] At present, the thermal efficiency of electric flame stoves continues to improve, with mainstream products reaching 78%-82% and some high-end models exceeding 80.5%, which is significantly higher than traditional first-level energy efficiency gas stoves. They also have the advantages of strong heat concentration and no risk of gas leakage, and are widely used in gas-restricted areas, high-end residences and outdoor scenarios.

[0004] However, existing technologies still face several bottlenecks that hinder further improvements in energy efficiency: To alleviate the problem of concentrated electrode erosion, traditional electric flame stoves often employ a swirling air ring injection system. Excessive carrier gas flow can rapidly carry away arc energy, leading to a decrease in plasma enthalpy and resulting in effective heat loss, creating a technical contradiction between "extending electrode lifespan" and "improving thermal efficiency." Furthermore, the rapid airflow within the existing flame tube generates significant noise, providing a poor user experience.

[0005] For example, the high-efficiency burner and electric flame stove disclosed in the invention application patent with application number 2025110995230 constructs two discharge zones to form a secondary ionization "avalanche effect" by setting a top discharge head and an end discharge head at the top and bottom of the anode needle, respectively. Although this can improve heat transfer efficiency, the simultaneous discharge of the two discharge heads requires more electrical energy. In essence, it increases the input power to concentrate heat, but does not fundamentally reduce the energy consumption per unit of heat and fails to truly achieve energy saving. Moreover, this invention application still retains rapid airflow, which cannot solve the noise problem of the discharge zone.

[0006] In addition, the air intake grille in the existing technology is used as the heating element of the air cooling circuit module. However, when users use the electric flame stove, soup may splash onto the stove, causing the soup to be sucked into the stove body from the air intake grille and splashed onto the circuit module, which may lead to the circuit module malfunction. Summary of the Invention

[0007] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0008] An energy-saving and noise-reducing electric flame stove includes: a furnace body, a burner assembly disposed on the top of the furnace body, an energy-saving drive circuit module electrically connected to the burner assembly, an air intake device for air intake of the burner, and a blower for cooling the energy-saving drive circuit module. The furnace head assembly includes an upper shell, a lower shell, and multiple ionization units evenly distributed circumferentially between the upper shell and the lower shell; each ionization unit includes a cathode tube, a ceramic tube coaxially disposed at the lower part of the cathode tube, and an anode needle installed at the axis of the ceramic tube. The lower end of the anode needle is tubular, and a first gas passage is formed between its tube wall and the inner wall of the ceramic tube. A second gas passage is formed inside the anode needle, and the second gas passage penetrates the bottom of the anode needle. Multiple air inlets are opened at the upper end of the ceramic tube, and multiple flow-limiting holes corresponding to the air inlets are opened at the top of the tube wall of the anode needle. The tip of the anode needle forms a conical discharge head, and a diffusion channel is formed between the discharge head and the inner wall of the cathode tube. The flow cross section of the diffusion channel is wider at the top and narrower at the bottom. Preferably, the flow rate limiting orifice is arranged at a downward angle from the inner wall to the outer wall of the anode needle; Preferably, the bottom of the furnace body is provided with a first air intake grille and a second air intake grille; the air intake device is connected to the interior of the furnace head assembly and the first air intake grille respectively; the air inlet of the blower is connected to the second air intake grille, and the air outlet of the blower points to the heating element of the energy-saving drive circuit module; Preferably, an annular limiting flange is provided on the outer side of the bottom end of the cathode tube, and the upper housing is provided with a mounting hole adapted to the cathode tube, wherein the outer diameter of the annular limiting flange is larger than the diameter of the mounting hole; Preferably, an annular positioning platform is provided in the middle of the anode needle, and the upper end and lower end of the ceramic tube form an annular groove adapted to the annular positioning platform. The annular positioning platform is engaged in the annular groove, so that the anode needle and the ceramic tube are coaxially positioned and fixed. Preferably, the lower housing has a positioning hole adapted to the ceramic tube, and the lower end face of the ceramic tube is provided with an annular step. The outer diameter of the annular step is larger than the inner diameter of the positioning hole, and the lower end of the ceramic tube is embedded in the positioning hole to achieve axial positioning of the ceramic tube. Preferably, the energy-saving drive circuit module is equipped with a plurality of conductive pins corresponding to the ionization unit, which pass through the lower end of the ceramic tube and are electrically connected to the anode pin.

[0009] Compared with the prior art, the advantages of the present invention are: This invention features a first gas channel between the anode needle and the ceramic tube, a second gas channel inside the anode needle, and a combined structure of a gas inlet in the ceramic tube and a flow-limiting orifice in the anode needle. The flow-limiting orifice is tilted downwards to slow down the gas flow rate. Furthermore, the diffusion channel formed between the discharge head and the inner wall of the cathode tube further extends the gas residence time in the discharge region, increasing the probability of gas ionization, resulting in more complete and higher-energy plasma generation, significantly improving thermal efficiency, reducing energy consumption per unit of heat, and allowing the energy-saving drive circuit module to appropriately reduce circuit output power, reducing ineffective energy consumption and achieving true energy saving. At the same time, the significantly reduced gas flow rate significantly reduces noise inside the cathode tube, thereby fundamentally suppressing noise generation. Meanwhile, the second gas channel performs heat exchange inside the anode needle, alleviating electrode erosion, thus balancing lifespan, energy efficiency, and noise reduction.

[0010] The blower's air outlet is directly pointed at the heating element, which can significantly reduce the blower's operating speed and greatly reduce the blower's operating noise.

[0011] The bottom of the stove body is equipped with independent first and second air intake grilles. The air intake device is connected to the first air intake grille to supply air to the stove head, and the blower is connected to the second air intake grille to dissipate heat from the circuit module. This not only enables the circuit module to dissipate heat normally, but also effectively prevents soup from being sucked into the stove body from the air intake grille and splashing onto the circuit module, reducing the risk of circuit failure and improving the safety and stability of the equipment.

[0012] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the ionization unit.

[0016] Figure 3 This is a schematic diagram of the anode needle. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Furthermore, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figures 1-3 As shown, an energy-saving and noise-reducing electric flame stove includes a furnace body 1, a burner assembly, an energy-saving drive circuit module 3, an air intake device 4, and a blower 5. The burner assembly is fixedly installed and extends through the top panel of the furnace body 1. The energy-saving drive circuit module 3 is installed on the inner side of the bottom of the furnace body 1 and is electrically connected to the burner assembly. The air intake device 4 is installed inside the furnace body 1, and the blower 5 is fixed to the side of the energy-saving drive circuit module 3.

[0022] The burner assembly includes an upper shell 21, a lower shell 22, and multiple ionization units 23. The multiple ionization units 23 are evenly distributed circumferentially between the upper shell 21 and the lower shell 22. The upper shell 21 and the lower shell 22 are connected by bolts for sealing.

[0023] The ionization unit 23 consists of a cathode tube 231, a ceramic tube 232, and an anode needle 233. The ceramic tube 232 is coaxially sleeved on the lower inner side of the cathode tube 231, and the anode needle 233 is installed at the axial position of the ceramic tube 232. The lower end of the anode needle 233 is tubular, and its tube wall forms an annular first gas channel 2334 with the inner wall of the ceramic tube 232. The interior of the anode needle 233 is hollow, forming a second gas channel 2335, which penetrates the bottom of the anode needle 233. Multiple air inlets 2321 are evenly distributed around the upper circumference of the ceramic tube 232, and multiple flow-limiting holes 2331 are correspondingly distributed at the top of the tube wall of the anode needle 233. The flow-limiting holes 2331 are inclined downwards from the inner wall to the outer wall to slow down the gas flow rate, prolong the residence time, increase the ionization probability, and improve the thermal efficiency. The anode needle 233 has an integrally formed conical discharge head 2333 at its tip. The discharge head 2333 and the inner wall of the cathode tube 231 form a diffusion channel 2336 that is wider at the top and narrower at the bottom. The channel gradually expands in diameter from bottom to top, forcing the airflow to further decelerate and stagnate, thereby increasing the plasma density.

[0024] Two independent grille slots are provided at the bottom of the furnace body 1, where the first air intake grille 6 and the second air intake grille 7 are installed respectively. The air intake end of the air intake device 4 is connected to the first air intake grille 6, and the air outlet extends into the interior of the burner head assembly 2 to provide ionized airflow for the ionization unit 23. The air inlet of the blower 5 is connected to the second air intake grille 7, and the air outlet is directly facing the heating element of the energy-saving drive circuit module 3. This not only ensures normal heat dissipation of the circuit module, but also effectively prevents soup from being drawn into the stove body from the air intake grille and splashing onto the circuit module, reducing the risk of circuit failure and improving the safety and stability of the equipment.

[0025] An annular limiting flange 2311 is integrally formed on the outer side of the bottom end of the cathode tube 231. The upper housing 21 has a matching mounting hole. The outer diameter of the annular limiting flange 2311 is larger than the diameter of the mounting hole. After the cathode tube 231 is inserted into the mounting hole from above, the annular limiting flange 2311 is engaged with the inner side of the upper housing 21 to achieve axial limiting.

[0026] An annular positioning platform 2332 is integrally formed in the middle of the anode needle 233. An annular groove 2322 is formed between the upper and lower ends of the ceramic tube 232. The annular positioning platform 2332 is inserted into the annular groove 2322, so that the anode needle 233 and the ceramic tube 232 are coaxially fixed. The lower housing 22 has a positioning hole that matches the ceramic tube 232. An annular step 2323 is integrally formed on the lower end face of the ceramic tube 232. The outer diameter of the annular step 2323 is larger than the inner diameter of the positioning hole. The lower end of the ceramic tube 232 is inserted into the positioning hole, and the annular step 2323 is engaged with the inner side of the lower housing 22, thus completing the axial fixation of the ceramic tube 232.

[0027] Multiple conductive pins 31 are soldered onto the energy-saving drive circuit module 3. The conductive pins 31 pass upward through the lower end of the ceramic tube 232 and their tops are in contact with the bottom of the anode pin 233 to achieve stable power transmission.

[0028] When in use, the power is turned on, the energy-saving drive circuit module 3 supplies power to the anode needle 233 through the conductive needle 31, the air intake device 4 is activated, and the outside air enters through the first air intake grille 6, and passes through the inside of the burner assembly 2, the air intake hole 2321 of the ceramic tube 232, and the flow rate limiting hole 2331 of the anode needle 233 in sequence, and is diverted into the first air passage 2334 and the second air passage 2335. The airflow finally flows out from the top of the anode needle 233 to the diffusion air passage 2336.

[0029] The flow-limiting orifice 2331 is tilted downwards to slow down the gas flow rate. After the gas flow enters the diffuser channel 2336, which is wider at the top and narrower at the bottom, it is further slowed down due to the gradual expansion of the flow cross-section. The gas flow undergoes two decelerations, which significantly prolongs the residence time of the gas in the discharge region, increases the gas density, and improves the probability of gas ionization. This, in turn, promotes more complete plasma generation and higher energy, significantly improving thermal efficiency. In addition, the sufficient slowing down of the rapid gas flow further reduces the generation of gas flow noise. At the same time, when the gas flow passes through the second channel 2335, heat exchange occurs inside the anode needle 233, which effectively alleviates electrode erosion, balancing service life and energy efficiency. The high-voltage current creates a high-voltage electric field between the conical discharge head 2333 of the anode needle 233 and the cathode tube 231. The electric field breaks down the gas flow, causing the gas to ionize and generate high-temperature plasma. The plasma is ejected from the diffuser channel 2336, forming a high-temperature flame to heat the cookware.

[0030] Because the ionization unit 23 has high ionization efficiency, i.e. high thermal efficiency, the energy-saving drive circuit module 3 can appropriately reduce power output during use, thereby achieving the purpose of energy saving.

[0031] At the same time, the blower 5 starts, and outside air enters through the second air intake grille 7 and blows directly onto the heating element of the energy-saving drive circuit module 3. This not only enables the circuit module to dissipate heat normally, but also effectively prevents soup from being sucked into the stove body from the air intake grille and splashing onto the circuit module, reducing the risk of circuit failure and improving the safety and stability of the equipment.

[0032] In addition, the air outlet of blower 5 is directly pointed to the heating element, which can significantly reduce the operating speed of blower 5 and greatly reduce the operating noise of blower 5.

[0033] This invention optimizes the air duct structure, rationally sets the angle of the flow-limiting orifice and the upper-wide and lower-narrow diffusion air duct, thereby slowing down the airflow, enhancing ionization, improving thermal efficiency and mitigating electrode erosion; through the independent double-grid air duct design, it takes into account both heat dissipation and prevention of soup intrusion, achieving high-efficiency energy saving and safe and stable operation of the electric flame stove.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An energy-saving and noise-reducing electric flame stove, characterized in that, include: The furnace body, the furnace head assembly located on the top of the furnace body, the energy-saving drive circuit module electrically connected to the furnace head assembly, the air intake device for the furnace head air intake, and the blower for cooling the energy-saving drive circuit module. The furnace head assembly includes an upper shell, a lower shell, and multiple ionization units evenly distributed circumferentially between the upper shell and the lower shell; each ionization unit includes a cathode tube, a ceramic tube coaxially disposed at the lower part of the cathode tube, and an anode needle installed at the axis of the ceramic tube. The lower end of the anode needle is tubular, and a first gas passage is formed between its tube wall and the inner wall of the ceramic tube. A second gas passage is formed inside the anode needle, and the second gas passage penetrates the bottom of the anode needle. Multiple air inlets are opened at the upper end of the ceramic tube, and multiple flow-limiting holes corresponding to the air inlets are opened at the top of the tube wall of the anode needle. The tip of the anode needle forms a conical discharge head, and a diffusion channel is formed between the discharge head and the inner wall of the cathode tube. The flow cross-section of the diffusion channel is wider at the top and narrower at the bottom.

2. The energy-saving and noise-reducing electric flame stove according to claim 1, characterized in that, The flow-limiting orifice is arranged at a downward angle from the inner wall to the outer wall of the anode needle.

3. The energy-saving and noise-reducing electric flame stove according to claim 2, characterized in that, The bottom of the furnace body is provided with a first air intake grille and a second air intake grille; the air intake device is connected to the interior of the furnace head assembly and the first air intake grille respectively; the air inlet of the blower is connected to the second air intake grille, and the air outlet of the blower points to the heating element of the energy-saving drive circuit module.

4. The energy-saving and noise-reducing electric flame stove according to claim 3, characterized in that, An annular limiting flange is provided on the outer side of the bottom end of the cathode tube, and the upper housing is provided with a mounting hole adapted to the cathode tube. The outer diameter of the annular limiting flange is larger than the diameter of the mounting hole.

5. The energy-saving and noise-reducing electric flame stove according to claim 4, characterized in that, An annular positioning platform is provided in the middle of the anode needle. The upper end and lower end of the ceramic tube form an annular groove that is adapted to the annular positioning platform. The annular positioning platform is engaged in the annular groove, so that the anode needle and the ceramic tube are coaxially positioned and fixed.

6. The energy-saving and noise-reducing electric flame stove according to claim 5, characterized in that, The lower housing has a positioning hole adapted to the ceramic tube. The lower end face of the ceramic tube has an annular step. The outer diameter of the annular step is larger than the inner diameter of the positioning hole. The lower end of the ceramic tube is embedded in the positioning hole to achieve axial positioning of the ceramic tube.

7. The energy-saving and noise-reducing electric flame stove according to claim 5, characterized in that, The energy-saving drive circuit module is equipped with multiple conductive pins corresponding to the ionization unit. These conductive pins pass through the lower end of the ceramic tube and are electrically connected to the anode pin.

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