Thermal cycle electric oven

Abstract

The utility model is applicable to the technical field of electric ovens, and provides a thermal cycle electric oven which is characterized in that a food accommodating cavity is formed in an oven shell, and an electric arc generator is arranged at the bottom of the oven shell; an air cavity is formed in the arc generating end of the arc generator, an air inlet through hole is formed corresponding to the air cavity, and the air cavity is communicated with the food containing cavity through the air inlet through hole; an opening is formed in the top of the oven shell, a hanging rod or a hook is detachably connected to the top of the oven shell, and an upper cover covers the opening; the circulation cavity shell is arranged on the outer side of the bottom of the oven shell, and a circulation cavity is formed between the circulation cavity shell and the oven shell. The air guide pipeline is communicated with the food accommodating cavity and the circulating cavity; and a fan head of the fan is arranged in the air cavity. Therefore, the thermal cycle electric oven generates high temperature under the condition of lower heating power, so that food is heated quickly and uniformly, the outer skin of the food is quickly baked and coked, moisture in the food is locked, and the taste of the food is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electric oven technology, and in particular to a heat circulation electric oven. Background Technology

[0002] Existing electric ovens suitable for home use are resistance heating ovens. Resistance heating has a characteristic that requires a larger cross-section of the resistance wire to prevent it from melting if prolonged high-temperature heating is needed. Based on the conductivity properties of materials, the cross-section of the resistance wire is inversely proportional to its resistance. When the cross-section of the resistance wire increases, the resistance decreases, resulting in a larger current and a proportionally amplified heating power. However, high-power resistance heating ovens are difficult to use in homes. Therefore, existing electric ovens often result in excessively low temperatures and uneven heating during the baking process. When baking whole chickens, geese, ducks, or large pieces of pork or beef, the surface cannot effectively caramelize into a crispy skin, and the moisture inside the meat cannot be locked in, ultimately resulting in a lack of flavor and texture.

[0003] In conclusion, the existing structure obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a heat-circulating electric oven that utilizes the heating characteristics of an electric arc to generate high temperatures with relatively low heating power. The circulating air is heated and quickly rises to the preset temperature to bake the food. Furthermore, the circulating air heating of the food ensures even heating and guarantees the taste of the food.

[0005] To achieve the above objectives, this utility model provides a heat circulation electric oven, comprising:

[0006] The oven shell has an internal food-containing cavity, and an electric arc generator is installed at its bottom, with the arc-generating end of the electric arc generator located inside the food-containing cavity. A wind chamber is formed at the bottom of the arc-generating end facing the circulation chamber, and at least one air inlet is formed at the arc-generating end corresponding to the wind chamber. The wind chamber communicates with the food-containing cavity through the air inlet. An opening is formed at the top of the oven shell, and a hanging rod or hook is detachably connected to the top of the oven shell. A top cover is provided over the opening.

[0007] A circulation chamber outer shell is disposed on the outer side of the bottom of the oven outer shell, forming the circulation chamber between it and the oven outer shell, and the circulation chamber communicates with the air cavity to form an air inlet channel;

[0008] At least one air duct connects the food receiving cavity and the circulation chamber to form an air outlet channel;

[0009] A fan, wherein the fan head is disposed within the air cavity, the air outlet side of the fan head is disposed near the air inlet hole, and the air inlet side of the fan head is disposed near the circulation chamber.

[0010] According to the hot circulating electric oven, the air duct is disposed on the inner wall of the oven shell and / or the inner wall of the circulating chamber shell; one end of the air duct extends toward the food receiving cavity and extends to near the top of the oven shell, and the other end extends toward the circulating chamber and extends at least to near the top of the circulating chamber shell.

[0011] According to the aforementioned hot-circulation electric oven, it further includes an electrical cavity shell, inside which an electrical chamber is formed. The electrical chamber is equipped with a power supply component and a motor for the fan. The motor is electrically connected to the fan head. The power supply component is electrically connected to the arc generator and the motor, respectively.

[0012] According to the aforementioned hot-circulating electric oven, the outer shell of the electrical cavity includes an upper electrical cavity shell and a lower electrical cavity shell. The first inner cavity of the upper electrical cavity shell and the second inner cavity of the lower electrical cavity shell form the electrical cavity. The upper electrical cavity shell is provided with a layered plate, which divides the first inner cavity into an upper cavity and a lower cavity. The lower cavity communicates with the second inner cavity of the lower electrical cavity shell.

[0013] The layered plate is provided with a motor mounting slot communicating with the lower cavity, and the motor mounting slot protrudes towards the upper cavity; the outer shell of the circulation cavity is provided with a through slot adapted to the motor mounting slot, the through slot extends towards the upper cavity, and the motor mounting slot is embedded in the through slot to close the through slot;

[0014] The motor is located in the lower cavity and is disposed in the motor mounting slot. A connecting rod connects the motor and the fan head. An opening adapted to the connecting rod is provided on one side of the motor mounting slot facing the through slot.

[0015] According to the aforementioned hot-circulation electric oven, the electric arc generator includes a cathode conductive element, at least one pair of electrodes, at least one insulating heat-conducting tube, at least one conductive column, and at least one insulating heat-insulating tube.

[0016] The bottom of the cathode conductive element is provided with at least one electrode mounting hole facing the circulation chamber;

[0017] Each of the electrode mounting holes is equipped with an electrode pair; the electrode pair includes a cathode ion head and an anode ion head; the cathode ion head is close to the inside of the electrode mounting hole and is located at one end away from the circulation chamber, and the cathode ion head is electrically connected to the cathode conductive element;

[0018] The insulating heat-conducting tube has a hollow structure. The anode ion head, corresponding to the cathode ion head, is disposed inside the insulating heat-conducting tube and located at one end of the electrode mounting hole near the circulation chamber. The insulating heat-conducting tube is disposed close to the inside of the electrode mounting hole, and there is a gap between the cathode ion head and the anode ion head.

[0019] The cathode conductive element, the electrode pair, and the insulating heat-conducting pipe form the arc generating end; the bottom of the cathode conductive element is provided with the air cavity facing the circulation chamber; the top of the cathode conductive element is provided with at least one air inlet hole corresponding to the air cavity.

[0020] The end of the anode ion head facing the circulation chamber is electrically connected to one end of the conductive column, and the outer peripheral wall of the conductive column is wrapped with the insulating heat insulation tube;

[0021] The cathode conductive element is electrically connected to the power supply component; the other end of the conductive post is electrically connected to the power supply component.

[0022] According to the aforementioned hot-circulation electric oven, the electrode mounting hole is a blind hole.

[0023] According to the aforementioned hot-circulating electric oven, the end of the cathode ion head facing the anode ion head is inverted conical; the end of the anode ion head facing the cathode ion head is conical.

[0024] A limiting ring is provided on the bottom of the oven shell facing the food receiving cavity. A limiting groove adapted to the limiting ring is opened on the bottom of the cathode conductive component. The limiting groove is engaged in the limiting ring.

[0025] According to the hot circulating electric oven, multiple pairs of electrodes are provided, and multiple electrode mounting holes are opened corresponding to the electrode pairs; the multiple electrode mounting holes form a ring and surround the outer periphery of the air cavity.

[0026] Multiple conductive pillars are provided corresponding to the electrode pairs, and the multiple conductive pillars form a ring.

[0027] According to the aforementioned hot-circulation electric oven, the power supply component includes:

[0028] A circuit board is disposed in the second inner cavity of the lower shell of the electrical cavity, and an anode current circuit and a cathode current circuit are disposed on the circuit board.

[0029] An anode wire, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to the shunt circuit board;

[0030] A current shunt circuit board is disposed in the upper cavity; the current shunt circuit board is annular; the outer shell of the circulation cavity has a plurality of mounting through holes adapted to the conductive posts; each of the conductive posts passes through the corresponding mounting through hole and is electrically connected to the current shunt circuit board.

[0031] The cathode wire has one end electrically connected to the cathode current circuit and the other end electrically connected to the cathode conductive element.

[0032] According to the aforementioned hot-circulating electric oven, the cathode conductive element is made of metal material and is in the shape of a frustum, cylinder, or hemisphere.

[0033] This utility model relates to a heat circulation electric oven, which utilizes the heating characteristics of an electric arc to generate high temperatures with relatively low heating power (total power not exceeding 3500W). Specifically, the electric oven includes an oven shell, a circulation chamber shell, an air duct, and a fan. The interior of the oven shell forms a food-containing cavity, with an electric arc generator located at its bottom, and the arc-generating end of the electric arc generator situated within the food-containing cavity. A wind chamber is formed at the bottom of the arc-generating end facing the circulation chamber, and at least one air inlet is formed corresponding to the wind chamber at the arc-generating end. The wind chamber communicates with the food-containing cavity through the air inlet. Because the arc-generating end of the electric arc generator is located within the food-containing cavity, it heats the air within the food-containing cavity. The top of the oven shell has an opening, and a hanging rod or hook is detachably connected to the top of the oven shell for hanging food. Alternatively, food can be placed directly into the food receiving cavity. The opening is covered with a top cover to close the food receiving cavity and prevent heat loss. A circulation chamber shell is located on the outer side of the bottom of the oven shell, forming the circulation chamber with the oven shell. The circulation chamber communicates with the air cavity to form an air inlet channel. After the electric arc generator heats the air in the food receiving cavity to a preset temperature, the fan starts working. The fan head is located inside the air cavity, with the air outlet side of the fan head positioned near the air inlet hole. The fan is positioned close to the circulation chamber, so when it starts operating, it draws air from the circulation chamber into the air inlet channel and then into the food container through the air inlet hole. During this process, the air comes into contact with the high temperature of the electric arc generating end, thus being rapidly heated. Simultaneously, since at least one air duct connects the food container and the circulation chamber to form an air outlet channel, the air heated in the food container enters the circulation chamber through the air duct when the fan is operating, thus forming circulating air. This circulating air comes into direct contact with the electric arc generating end, resulting in rapid heating. Under the action of the circulating air, the food in the food container heats up quickly, causing the outer skin to caramelize and become crispy while locking in moisture. Furthermore, the food is heated evenly, ensuring its texture. In addition, using circulating air for heating saves energy and reduces electricity consumption. Attached Figure Description

[0034] Figure 1 This is an exploded structural diagram of a heat-circulating electric oven according to an embodiment of the present invention;

[0035] Figure 2 This is a three-dimensional structural diagram of a heat-circulating electric oven according to an embodiment of the present invention;

[0036] Figure 3 This is a cross-sectional view of a heat-circulating electric oven according to an embodiment of the present invention;

[0037] Figure 4 This is a three-dimensional structural schematic diagram of an arc generator according to an embodiment of the present invention;

[0038] Figure 5 This is a schematic cross-sectional view of an arc generator according to an embodiment of the present invention;

[0039] Figure 6 This is one of the exploded structural diagrams of an arc generator according to an embodiment of the present invention;

[0040] Figure 7 This is the second exploded structural diagram of an arc generator according to an embodiment of this utility model. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0042] It should be noted that references to "an embodiment," "embodiment," "example embodiment," etc., in this specification refer to the described embodiment including specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0043] Furthermore, certain terms are used in the specification and subsequent claims to refer to specific components or parts. Those skilled in the art will understand that manufacturers may use different names or terms to refer to the same component or part. This specification and subsequent claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and subsequent claims are open-ended and should be interpreted as "including but not limited to." Additionally, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] See Figures 1 to 7 In one embodiment of this utility model, a heat circulation electric oven 100 is provided, comprising:

[0047] The oven shell 10 has a food receiving cavity 11 inside. An arc generator 12 is installed at the bottom of the oven shell 10, and the arc generating end of the arc generator 12 is located inside the food receiving cavity 11. A wind cavity 1211 is opened at the bottom of the arc generating end facing the circulation chamber 21, and at least one air inlet hole 1212 is opened at the arc generating end corresponding to the wind cavity 1211. The wind cavity 1211 is connected to the food receiving cavity 11 through the air inlet hole 1212. An opening 13 is opened at the top of the oven shell 10, and a hanging rod or hook is detachably connected to the top of the oven shell 10. The opening 13 is covered with a top cover 15.

[0048] The outer shell of the circulation chamber 20 is located on the outer side of the bottom of the oven shell 10, and a circulation chamber 21 is formed between it and the oven shell 10. The circulation chamber 21 is connected to the air chamber 1211 to form an air inlet channel.

[0049] At least one air duct 14 connects the food receiving cavity 11 and the circulation chamber 21 to form an air outlet channel;

[0050] The fan 30 has a fan head 31 located inside the air chamber 1211. The air outlet side of the fan head 31 is located near the air inlet hole 1212, and the air inlet side of the fan head 31 is located near the circulation chamber 21.

[0051] In this embodiment, the electric oven 100 utilizes an electric arc for heating. Electric arc heating can generate high temperatures within a relatively low heating power (generally less than 3500W) to cook food. The electric oven 100 includes an oven shell 10, inside which a food-containing cavity 11 is formed. The food-containing cavity 11 can hold food, which can be hung using a hanging rod or hook (not shown in the figure). The top cover 15 closes the food-containing cavity 11 to prevent heat loss. An electric arc generator 12 is installed on the oven shell 10. The electric arc generator 12 generates an electric arc, which is produced at the arc-generating end. The electric arc itself can generate temperatures exceeding 2000 degrees Celsius. The heat generated by the electric arc is conducted through the arc-generating end to the air in the food-containing cavity 11, rapidly heating the air inside the food-containing cavity 11. An air chamber 1211 is formed at the bottom of the arc generating end facing the circulation chamber 21. A fan head 31 is disposed within the air chamber 1211. When the fan 30 operates, it draws air from the circulation chamber 21 into the air inlet channel and then into the food receiving chamber 11 through the air inlet hole 1212. During this process, the air comes into full and direct contact with the arc generating end, thus being rapidly heated. The heated air then enters the food receiving chamber 11. When the fan 30 operates, because the air outlet side of the fan head 31 is positioned close to the air inlet hole 1212, and the air inlet side of the fan head 31 is positioned close to the circulation chamber 21, air in the circulation chamber 21 is drawn into the food receiving chamber 11, creating a negative pressure in the circulation chamber 21 relative to the food receiving chamber 11. Consequently, the heated air in the food receiving chamber 11 enters the circulation chamber 21 through the air guide pipe 14, thus forming a circulating airflow. Optionally, four air guide pipes 14 are provided and evenly distributed to accelerate the air circulation speed within the food receiving chamber 11 and the circulation chamber 21. During the operation of fan 30, the circulating air comes into direct contact with the arc generating end, thus being heated quickly. The high-temperature circulating air comes into even contact with the food, ensuring that the food is heated evenly. Furthermore, the high temperature causes the outer skin of the food to caramelize quickly, locking in the moisture of the meat inside and ensuring the taste of the food.

[0052] As an optional embodiment, see Figures 1-3 The air duct 14 is disposed on the inner wall of the oven shell 10 and / or the inner wall of the circulation chamber shell 20; one end of the air duct 14 extends toward the food receiving cavity 11 and extends to near the top of the oven shell 10, and the other end extends toward the circulation chamber 21 and extends at least to near the top of the circulation chamber shell 20.

[0053] In this embodiment, since the heated air in the food receiving cavity 11 rises, one end of the air guide duct 14 is extended to near the top of the oven shell 10 to guide the hot air from the top of the oven shell 10 into the circulation chamber 21. Since the top of the circulation chamber shell 20 is closer to the air cavity 1211, the other end of the air guide duct 14 is extended to near the top of the circulation chamber shell 20. Furthermore, having the air guide duct 14 near the top of the circulation chamber shell 20 without extending into it makes its installation more convenient. Of course, the other end of the air guide duct 14 can extend into the circulation chamber shell 20.

[0054] As an optional embodiment, see Figures 1-3 The hot circulating electric oven 100 also includes an electrical cavity shell, which is optionally located below the circulating cavity shell 20; the interior of the electrical cavity shell forms an electrical chamber, and the electrical chamber is equipped with a power supply component and a motor 32 of the fan 30; the motor 32 is electrically connected to the fan head 31; the power supply component is electrically connected to the arc generator 12 and the motor 32 respectively.

[0055] In this embodiment, the electrical cavity housing is used to install the power supply components and the motor 32 of the fan 30, etc. The power supply components can obtain power by installing a battery on the electrical cavity housing, or they can be connected to an external power source through an external power cord.

[0056] As an optional embodiment, see Figures 1-3 The electrical cavity shell includes an upper electrical cavity shell 41 and a lower electrical cavity shell 42. The first inner cavity 412 of the upper electrical cavity shell 41 and the second inner cavity 421 of the lower electrical cavity shell 42 form an electrical cavity. The upper electrical cavity shell 41 is provided with a layered plate 411, which divides the first inner cavity 412 into an upper cavity 4121 and a lower cavity 4122. The lower cavity 4122 communicates with the second inner cavity 421 of the lower electrical cavity shell 42.

[0057] The layered plate 411 is provided with a motor mounting groove 4111 that communicates with the lower cavity 4122, and the motor mounting groove 4111 protrudes towards the upper cavity 4121; the outer shell 20 of the circulation cavity is provided with a through groove 22 that is adapted to the motor mounting groove 4111, the through groove 22 extends to the upper cavity 4121, and the motor mounting groove 4111 is embedded in the through groove 22 to close the through groove 22;

[0058] The motor 32 is located in the lower cavity 4122 and is set in the motor mounting slot 4111. A connecting rod 33 is connected between the motor 32 and the fan head 31. An opening 4112 adapted to the connecting rod 33 is opened on one side of the motor mounting slot 4111 facing the through slot 22.

[0059] In this embodiment, the layered plate 411 is used to provide a motor mounting slot 4111 to facilitate the installation of the motor 32. To facilitate the connection between the motor 32 and the fan head 31, a connecting rod 33 is provided between the fan head 31 and the motor 32. The motor mounting slot 4111 on the layered plate 411 is adapted to the through slot 22 on the circulation chamber housing 20, and the upper cavity 4121 of the motor mounting slot 4111 protrudes, with the through slot 22 extending to the upper cavity 4121. Thus, the motor mounting slot 4111 can close the through slot 22, which not only reduces heat loss within the circulation chamber 21 but also prevents heat conduction from the circulation chamber 21 to the electrical chamber, thus avoiding interference with the power supply components and the operation of the motor 32.

[0060] As an optional embodiment, see Figures 4-7 The arc generator 12 includes a cathode conductive element 121, at least one pair of electrodes, at least one insulating heat-conducting tube 124, at least one conductive column 125, and at least one insulating heat-insulating tube 126.

[0061] The bottom of the cathode conductive element 121 facing the circulation chamber 21 has at least one electrode mounting hole 1213;

[0062] Each electrode mounting hole 1213 has an electrode pair installed inside it; the electrode pair includes a cathode ion head 122 and an anode ion head 123; the cathode ion head 122 is close to the inside of the electrode mounting hole 1213 and is located at the end away from the circulation chamber 21, and the cathode ion head 122 is electrically connected to the cathode conductive element 121.

[0063] The insulating heat pipe 124 has a hollow structure. The anode ion head 123, which corresponds to the cathode ion head 122, is disposed inside the insulating heat pipe 124 and is located at the end of the electrode mounting hole 1213 near the circulation chamber 21. The insulating heat pipe 124 is disposed close to the inside of the electrode mounting hole 1213, and there is a gap between the cathode ion head 122 and the anode ion head 123.

[0064] The cathode conductive element 121, the electrode pair, and the insulating heat pipe 124 form an arc generating end; the bottom of the cathode conductive element 121 is provided with a wind cavity 1211 facing the circulation chamber 21; the top of the cathode conductive element 121 is provided with at least one air inlet hole 1212 corresponding to the wind cavity 1211.

[0065] One end of the anodic ion head 123 facing the circulation chamber 21 is electrically connected to one end of the conductive column 125, and the outer peripheral wall of the conductive column 125 is wrapped with an insulating heat-insulating tube 126;

[0066] The cathode conductive element 121 is electrically connected to the power supply component; the other end of the conductive post 125 is electrically connected to the power supply component.

[0067] In this embodiment, each electrode pair is respectively disposed inside the respective electrode mounting holes 1213 of the cathode conductive element 121. Thus, the electric arc generated between the electrode pairs is located inside the electrode mounting holes 1213, preventing the user from contacting the arc. The cathode ion head 122 is in close contact with the electrode mounting holes 1213, allowing for electrical connection and direct heat transfer from the cathode ion head 122 to the cathode conductive element 121. An insulating heat-conducting pipe 124 is provided between the anode ion head 123 and the cathode conductive element 121. Optionally, the insulating heat-conducting pipe 124 is a magnesium oxide pipe. The insulating heat-conducting pipe 124 prevents short circuits between the anode ion head 123 and the cathode ion head 122 and transfers heat from the anode ion head 123 to the cathode conductive element 121. Optionally, one end of the insulating heat-conducting pipe 124 abuts against the cathode ion head 122, and the other end is flush with the end face of the electrode mounting hole 1213. The cathode ion head 122 and anode ion head 123 of the same electrode pair are spaced apart to facilitate the generation of an electric arc. The electric arc can release high temperatures instantaneously, and the heat from the arc is conducted to the cathode conductive element 121 through the insulated heat-conducting pipe 124. The anode ion head 123 is positioned close to the circulation chamber 21, allowing the conductive post 125 connected to the anode ion head 123 to easily extend from the electrode mounting hole 1213 and pass through the circulation chamber 21 to connect with the power supply component inside the electrical chamber. The outer peripheral wall of the conductive post 125 is wrapped with an insulated heat-insulating pipe 126 to prevent short circuits between the conductive post 125 and the cathode conductive element 121, while also reducing heat conduction between the conductive post 125 and the cathode conductive element 121. The insulated heat-insulating pipe 126 can be selected as an alumina ceramic pipe. The end of the cathode conductive element 121 closest to the circulation chamber 21 can be easily electrically connected to the power supply component inside the electrical chamber via a conductive wire. A wind cavity 1211 is opened at the bottom of the cathode conductive element 121. The fan head 31 of the fan 30 can be installed in the wind cavity 1211. The fan blades of the fan head 31 rotate to draw the air in the circulation chamber 21 into the wind cavity 1211 and then blow it into the food container cavity 11 through the air inlet hole 1212. The air comes into direct contact with the cathode conductive element 121 and quickly obtains the heat of the cathode conductive element 121.

[0068] As an optional embodiment, the electrode mounting hole 1213 is a blind hole (non-through hole) to avoid the exposure of the cathode ion head 122, the anode ion head 123, and the electric arc generated between the cathode ion head 122 and the anode ion head 123, thus preventing user contact.

[0069] As an optional embodiment, see Figure 7 The end of the cathode ion head 122 facing the anode ion head 123 is inverted conical; the end of the anode ion head 123 facing the cathode ion head 122 is conical; the cathode ion head 122 and the anode ion head 123 can stabilize the generated arc through tip discharge.

[0070] See Figure 1 and Figure 3 A limiting ring 16 is provided on the bottom of the oven shell 10, protruding towards the food receiving cavity 11. A limiting groove 1214 adapted to the limiting ring 16 is provided on the bottom of the cathode conductive component 121, and the limiting groove 1214 is engaged in the limiting ring 16. The cooperation between the limiting ring 16 and the limiting groove 1214 fixes the cathode conductive component 121 to the oven shell 10.

[0071] As an optional embodiment, see Figures 4-6 There are multiple pairs of electrodes, and multiple electrode mounting holes 1213 are provided for each electrode pair. The multiple electrode mounting holes 1213 form a ring and surround the outer periphery of the air cavity 1211, so that the heat generated by the multiple electric arc pairs can be conducted to the air inlet channel and the cathode conductive component 121 around the air inlet channel more quickly. When the fan 30 is working, the air entering the air inlet channel can be heated quickly.

[0072] Multiple conductive pillars 125 are provided with corresponding electrode pairs. Since the multiple electrode pairs are arranged in a ring, the multiple conductive pillars 125 form a ring.

[0073] As an optional embodiment, see Figure 1 The power supply components include:

[0074] The circuit board 51 is disposed in the second inner cavity 421 of the lower shell 42 of the electrical cavity. The circuit board 51 is provided with an anode current circuit and a cathode current circuit. The circuit board 51 can obtain power from the battery in the electrical cavity, or it can be connected to an external power source through an external power supply line.

[0075] Anode wire 52, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to the shunt circuit board 53; an installation hole adapted to the anode wire 52 is opened on the upper shell 41 of the electrical cavity, so that the anode wire 52 enters the upper cavity 4121 and connects to the shunt circuit board 53.

[0076] The current shunt circuit board 53 is disposed in the upper cavity 4121; the current shunt circuit board 53 is annular; the circulation cavity shell 20 has a plurality of mounting through holes 23 adapted to the conductive posts 125; each conductive post 125 passes through the corresponding mounting through hole 23 and is electrically connected to the current shunt circuit board 53.

[0077] The cathode wire 54 has one end electrically connected to the cathode current circuit and the other end electrically connected to the cathode conductive element 121. The upper shell 41 of the electrical cavity and the outer shell 20 of the circulation cavity are both provided with mounting holes that are compatible with the cathode wire 54, so that the cathode wire can pass through the upper shell 41 of the electrical cavity and the outer shell 20 of the circulation cavity to connect with the cathode conductive element 121.

[0078] As an optional embodiment, the cathode conductive element 121 is made of a metallic material and is in the shape of a frustum, cylinder, or hemisphere.

[0079] The working process of the heat circulation electric oven 100 is as follows:

[0080] Food can be hung on a hanging rod or hook, or placed directly into the food receiving cavity 11. The top cover closes the food receiving cavity 11. Circuit board 51 is connected to an external power source via an external power cord and is powered on. The anode current of circuit board 51 is conducted to the anode ion head 123 through the anode wire 52, the shunt circuit board 53, and the conductive post 125. Simultaneously, the cathode current of circuit board 51 is conducted to the cathode ion head 122 through the cathode wire 54 and the cathode conductive element 121. Due to the gap between the cathode ion head 122 and the anode ion head 123, an electric arc is eventually generated, rapidly releasing high temperatures. The high temperature generated by the cathode ion head 122 is directly conducted to the cathode conductive element 121. The high temperature generated by the anode ionizer 123 and the electric arc is introduced to the cathode conductive element 121 through the insulating heat pipe 124. The insulating heat pipe 124 is a magnesium oxide pipe, which not only has thermal conductivity but also insulation properties. After the preset heating time, the circuit board 51 supplies power to the motor 32 of the fan 30, and the fan head 31 starts to work to generate circulating air. That is, air is drawn into the food receiving cavity 11 through the air inlet channel from the circulating chamber 21. During this process, the air comes into contact with the cathode conductive element 121 and is rapidly heated. After the hot air enters the food receiving cavity 11, it rises. Due to the negative pressure between the circulating chamber 21 and the food receiving cavity 11, the hot air enters the circulating chamber 21 through the four air guide pipes 14. Because the circulating air is rapidly heated, it comes into uniform contact with the food, making the food evenly heated. The high temperature of the circulating air can quickly cook the food, ensuring its taste.

[0081] In summary, this utility model relates to a heat-circulating electric oven, which utilizes the heating characteristics of an electric arc to generate high temperatures with relatively low heating power (total power not exceeding 3500W). Specifically, the electric oven includes an oven shell, a circulation chamber shell, an air duct, and a fan. The interior of the oven shell forms a food-containing cavity, with an electric arc generator located at its bottom, and the arc-generating end of the electric arc generator situated within the food-containing cavity. A wind chamber is formed at the bottom of the arc-generating end facing the circulation chamber, and at least one air inlet is formed corresponding to the wind chamber at the arc-generating end. The wind chamber communicates with the food-containing cavity through the air inlet. Because the arc-generating end of the electric arc generator is located within the food-containing cavity, it heats the air within the food-containing cavity. The top of the oven shell has an opening, and a hanging rod or hook is detachably connected to the top of the oven shell for hanging food. Alternatively, food can be placed directly into the food receiving cavity. The opening is covered with a top cover to close the food receiving cavity and prevent heat loss. A circulation chamber shell is located on the outer side of the bottom of the oven shell, forming the circulation chamber with the oven shell. The circulation chamber communicates with the air cavity to form an air inlet channel. After the electric arc generator heats the air in the food receiving cavity to a preset temperature, the fan starts working. The fan head is located inside the air cavity, with the air outlet side of the fan head positioned near the air inlet hole. The fan is positioned close to the circulation chamber, so when it starts operating, it draws air from the circulation chamber into the air inlet channel and then into the food container through the air inlet hole. During this process, the air comes into contact with the high temperature of the electric arc generating end, thus being rapidly heated. Simultaneously, since at least one air duct connects the food container and the circulation chamber to form an air outlet channel, the air heated in the food container enters the circulation chamber through the air duct when the fan is operating, thus forming circulating air. This circulating air comes into direct contact with the electric arc generating end, resulting in rapid heating. Under the action of the circulating air, the food in the food container heats up quickly, causing the outer skin to caramelize and become crispy while locking in moisture. Furthermore, the food is heated evenly, ensuring its texture. In addition, using circulating air for heating saves energy and reduces electricity consumption.

[0082] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A heat-circulating electric oven, characterized in that, include: The oven shell has an internal food-containing cavity, and an electric arc generator is installed at its bottom, with the arc-generating end of the electric arc generator located inside the food-containing cavity. A wind chamber is formed at the bottom of the arc-generating end facing the circulation chamber, and at least one air inlet is formed at the arc-generating end corresponding to the wind chamber. The wind chamber communicates with the food-containing cavity through the air inlet. An opening is formed at the top of the oven shell, and a hanging rod or hook is detachably connected to the top of the oven shell. A top cover is provided over the opening. A circulation chamber outer shell is disposed on the outer side of the bottom of the oven outer shell, forming the circulation chamber between it and the oven outer shell, and the circulation chamber communicates with the air cavity to form an air inlet channel; At least one air duct connects the food receiving cavity and the circulation chamber to form an air outlet channel; A fan, wherein the fan head is disposed within the air cavity, the air outlet side of the fan head is disposed near the air inlet hole, and the air inlet side of the fan head is disposed near the circulation chamber.

2. The electric oven with heat circulation according to claim 1, characterized in that, The air duct is disposed on the inner wall of the oven shell and / or the inner wall of the circulation chamber shell; one end of the air duct extends toward the food receiving cavity and extends to near the top of the oven shell, and the other end extends toward the circulation chamber and extends at least to near the top of the circulation chamber shell.

3. The electric oven with heat circulation according to claim 1, characterized in that, It also includes an electrical cavity shell, which forms an electrical chamber inside. The electrical chamber houses a power supply component and the motor of the fan. The motor is electrically connected to the fan head. The power supply component is electrically connected to the arc generator and the motor, respectively.

4. The electric oven with heat circulation according to claim 3, characterized in that, The electrical cavity housing includes an upper electrical cavity housing and a lower electrical cavity housing. The first inner cavity of the upper electrical cavity housing and the second inner cavity of the lower electrical cavity housing form the electrical cavity. The upper electrical cavity housing is provided with a layered plate, which divides the first inner cavity into an upper cavity and a lower cavity. The lower cavity communicates with the second inner cavity of the lower electrical cavity housing. The layered plate is provided with a motor mounting slot communicating with the lower cavity, and the motor mounting slot protrudes towards the upper cavity; the outer shell of the circulation cavity is provided with a through slot adapted to the motor mounting slot, the through slot extends towards the upper cavity, and the motor mounting slot is embedded in the through slot to close the through slot; The motor is located in the lower cavity and is disposed in the motor mounting slot. A connecting rod connects the motor and the fan head. An opening adapted to the connecting rod is provided on one side of the motor mounting slot facing the through slot.

5. The electric oven with heat circulation according to claim 4, characterized in that, The arc generator includes a cathode conductive element, at least one pair of electrodes, at least one insulating heat-conducting tube, at least one conductive column, and at least one insulating heat-insulating tube. The bottom of the cathode conductive element is provided with at least one electrode mounting hole facing the circulation chamber; Each of the electrode mounting holes is equipped with an electrode pair; the electrode pair includes a cathode ion head and an anode ion head; the cathode ion head is close to the inside of the electrode mounting hole and is located at one end away from the circulation chamber, and the cathode ion head is electrically connected to the cathode conductive element; The insulating heat-conducting tube has a hollow structure. The anode ion head, corresponding to the cathode ion head, is disposed inside the insulating heat-conducting tube and located at one end of the electrode mounting hole near the circulation chamber. The insulating heat-conducting tube is disposed close to the inside of the electrode mounting hole, and there is a gap between the cathode ion head and the anode ion head. The cathode conductive element, the electrode pair, and the insulating heat-conducting pipe form the arc generating end; the bottom of the cathode conductive element is provided with the air cavity facing the circulation chamber; the top of the cathode conductive element is provided with at least one air inlet hole corresponding to the air cavity. The end of the anode ion head facing the circulation chamber is electrically connected to one end of the conductive column, and the outer peripheral wall of the conductive column is wrapped with the insulating heat insulation tube; The cathode conductive element is electrically connected to the power supply component; the other end of the conductive post is electrically connected to the power supply component.

6. The electric oven with heat circulation according to claim 5, characterized in that, The electrode mounting hole is a blind hole.

7. The electric oven with heat circulation according to claim 5, characterized in that, The end of the cathode ion head facing the anode ion head is inverted conical; the end of the anode ion head facing the cathode ion head is conical. A limiting ring is provided on the bottom of the oven shell facing the food receiving cavity. A limiting groove adapted to the limiting ring is opened on the bottom of the cathode conductive component. The limiting groove is engaged in the limiting ring.

8. The electric oven with heat circulation according to claim 5, characterized in that, The electrode pairs are provided in multiple pairs, and the electrode mounting holes are provided in multiple ways corresponding to the electrode pairs; the multiple electrode mounting holes form a ring and are arranged around the outer periphery of the air cavity. Multiple conductive pillars are provided corresponding to the electrode pairs, and the multiple conductive pillars form a ring.

9. The electric oven with heat circulation according to claim 8, characterized in that, The power supply component includes: A circuit board is disposed in the second inner cavity of the lower shell of the electrical cavity, and an anode current circuit and a cathode current circuit are disposed on the circuit board. An anode wire, one end of which is electrically connected to the anode current circuit, and the other end of which is electrically connected to the shunt circuit board; A current shunt circuit board is disposed in the upper cavity; the current shunt circuit board is annular; the outer shell of the circulation cavity has a plurality of mounting through holes adapted to the conductive posts; each of the conductive posts passes through the corresponding mounting through hole and is electrically connected to the current shunt circuit board. The cathode wire has one end electrically connected to the cathode current circuit and the other end electrically connected to the cathode conductive element.

10. The electric oven with heat circulation according to claim 5, characterized in that, The cathode conductive element is made of metallic material and is in the shape of a frustum, cylinder, or hemisphere.

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