Portable food cooking equipment and cooking method

Abstract

The invention relates to portable food cooking equipment and a cooking method.The portable food cooking equipment comprises a baking tray used for cooking food, the lower end of the baking tray is connected with a base, the base supports the baking tray, a heating device is arranged in the baking tray, and a control panel corresponding to the heating device is arranged on the base. A middle plate is arranged between the bottom plate and the face plate, the heating device is arranged between the middle plate and the face plate, and the heating device enables the face plate and the bottom plate to be heated and then transmits heat to the face plate to heat and cook food. During plugging, the electrode of the heating device is inserted into the electrode contact pin, a power supply is connected through the socket, and the heating device is electrified to work by the control panel and the electrode contact pin. The heat energy use efficiency of the food cooking equipment is improved through the protruding part of the middle plate and the hollowed-out part arranged between the middle plate and the bottom plate, the food cooking area is heated more evenly, and food cooking is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of food cooking equipment, and in particular to a portable food cooking equipment and a cooking method. Background Art

[0002] The grill is a common appliance for grilling and cooking food, featuring a flat, narrow, and long open operating area. Since grilling requires laying out the food flat, a large flat surface is required. Since the food needs to be manually flipped over the grill pan during grilling, the grill pan should not be too deep. To prevent hand burns from high temperatures, grill pans are typically small, and prolonged operation with hands above the grill pan should be avoided as much as possible. Most common grills use charcoal to grill food directly, which can easily produce carcinogens. The grilling process produces harmful fumes. Conventional grills use a direct exhaust system, discharging fumes and harmful gases directly into the atmosphere, which can cause some environmental pollution.

[0003] Electric grills meet people's needs for frying and grilling food. They are simple to operate and free of harmful gases, making them a popular small household appliance. To address the high volume of oil smoke generated during frying and grilling, most electric grills are currently equipped with oil fume treatment devices and internal air circulation channels. To facilitate heat dissipation, the underside of the electric grill base is usually provided with foot pads to create a heat dissipation gap between the base and the countertop. Existing baking trays are large and cannot be disassembled, making them inconvenient to carry and transport. They also suffer from inconsistent heating across the grilling area, with some areas experiencing excessive heat, causing food to burn, while others experience insufficient heat, resulting in undercooked food. Furthermore, baking trays are often secured with screws, which can result in poor waterproofing and sealing, making them susceptible to water ingress and poor sealing.

[0004] Chinese Patent Publication No. CN117257138A relates to a multifunctional cooking device comprising a base, a sealing mechanism disposed at the front of the base for vacuuming and sealing food bags; a steaming mechanism disposed at the rear of the base, the steaming mechanism comprising a steaming chamber containing a heating medium for steaming food packaged via a vent; and a grilling mechanism disposed at the top of the base for grilling the steamed food. By integrating multiple functional modules into one, this application not only enables a single cooking device to sequentially perform tasks such as sealing and packaging, constant temperature steaming and heating, and rapid grilling of food to be cooked, such as steak, thereby producing tender and nutritious food, but also enriches the cooking device's functionality and significantly enhances the user experience. This cooking device can readily perform multiple functions, but its large size makes it difficult to carry and is difficult to clean completely after use.

[0005] Chinese Patent Publication No. CN117297353A provides a compact smokeless grill, which includes a base, a baking tray, and an airflow drive unit. The baking tray is mounted on the base, and the upper side of the baking tray is a food heating zone, the height of which is less than the length and width of the heating zone. An air intake grille and an exhaust grille are provided on both sides of the heating zone along the length or width direction. Above the baking tray, the upper air duct is located between the air intake grille and the exhaust grille. The base includes an isolation plate and a base shell, the isolation plate is located on the upper side of the base shell, the baking tray is located on the upper side of the isolation plate, and the lower air duct is formed between the baking tray and the isolation plate. The airflow drive unit is a crossflow fan, and the crossflow fan blades are located between the baking tray and the isolation plate. When the crossflow fan is in operation, the gas enters the lower air duct from the upper air duct through the air intake grille, and enters the upper air duct from the lower air duct through the exhaust grille. The downwind duct is formed between the baking tray and the isolation tray, and the crossflow fan blades are installed between the isolation tray and the baking tray. This helps the crossflow fan and the downwind duct to coincide with each other in height, making the smokeless oven compact. This patented method heats unevenly, which can easily lead to insufficient heating in some areas. Summary of the Invention

[0006] The technical problem addressed by the present invention is that existing grilling pans are bulky and non-detachable, making them inconvenient to carry and transport. Furthermore, the grilling area is heated unevenly, with some areas overheating and causing food to burn, while others are underheated, resulting in undercooked food. Furthermore, grilling pans are often secured with screws or other means, resulting in poor waterproof sealing and prone to water ingress, which can degrade the sealing performance. To address these shortcomings of the prior art, a portable food cooking device and cooking method are provided.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A portable food cooking device is constructed, comprising a baking tray for cooking food, wherein the lower end of the baking tray is connected to a base, the base supports the baking tray, a heating device is provided in the baking tray, and a control panel is provided on the base corresponding to the heating device. The device is characterized in that: the baking tray comprises a front panel and a bottom panel, a middle panel is provided between the bottom panel and the front panel, the heating device is placed between the middle panel and the front panel, and the heating device heats the front panel and the bottom panel and then transfers the heat to the front panel to heat and cook the food.

[0009] The food cooking device of the above structure connects a power supply to the control panel via the base, which then drives the heating device to control the heating temperature. The baking tray and the base are plug-in or fixedly connected, which facilitates the support of the baking tray for use. When camping, the food cooking device can be placed on a flat surface, making it more convenient to use. The heating device heats the panel, thereby heating the food cooking area for actual cooking. A middle plate is provided between the base plate and the heating device to prevent heat from being directly transferred to the base plate, which could cause burns if accidentally touched.

[0010] In the above, preferably, the baking tray and the base are fixed by plugging, the heating device is a heating film, both sides of the heating film can be heated, the upper side of the heating film is heated to heat the panel, and the lower side is heated to heat the middle plate, and the upper side and / or lower side of the heating film is provided with an insulating film;

[0011] The middle plate is provided with a raised portion, and the heating film is correspondingly provided with a square hole. The raised portion passes through the square hole. The lower side of the heating film heats the middle plate and then transfers heat to the bottom of the panel through the raised portion.

[0012] The baking tray and base of the food cooking device of the above structure are fixed by plugging, which facilitates installation of the baking tray and base and reduces the storage volume when carrying. The heating device uses a heating film, which facilitates heating on both sides and occupies a smaller area. Insulating films are provided on both sides of the heating film to prevent electric shock caused by leakage from the heating film to the front panel, middle panel, or bottom panel, thereby improving safety. The raised portion provided on the middle panel allows some of the heat from the middle panel to be applied to the bottom of the panel through the raised portion, avoiding uneven heating caused by the square hole portion not being heated. It also utilizes part of the heat energy of the middle panel, improving the efficiency of heat energy utilization.

[0013] In the above, preferably, a gap is left between the middle plate and the bottom plate to form a hollow portion, the hollow portion delays the heat transfer from the middle plate to the bottom plate, the hollow portion extends to the bottom of the panel, and the heat of the middle plate is transferred to the bottom of the panel through the hollow portion to heat the bottom of the panel.

[0014] The food cooking device with this structure utilizes a hollow section between the middle plate and the bottom plate. The air within the hollow section slows down heat transfer to the bottom plate, preventing overheating and burns caused by accidental contact during use. The hollow section extends to the perimeter of the bottom of the panel. The middle plate heats the air within the hollow section, and the hot air near the middle plate heats the perimeter of the bottom of the panel, resulting in more even heating of the entire panel and further improving thermal efficiency.

[0015] In the above, preferably, the baking tray also includes a connecting bracket that is plugged and fixed to the base, the connecting bracket is connected to the bottom plate and partially passes through the bottom plate, the middle plate is placed above the connecting bracket, and two groups of connecting brackets are provided, corresponding to two groups of bases, one group of connecting brackets is provided with a conductive electrode for powering the heating device, and the base is provided with an electrode pin corresponding to the conductive electrode, and the conductive electrode is connected to the electrode pin in a plug-in manner to enable the heating device to be powered on.

[0016] The food cooking device with the above structure facilitates the fixing and use of the baking tray by means of the connecting bracket, and the middle plate is placed above the connecting bracket to enlarge the hollow space between the middle plate and the bottom plate.

[0017] In the above, preferably, a fixing column is provided under the connecting bracket, and a fixing cavity is provided on the base corresponding to the fixing column. After the connecting bracket is inserted into the base, the fixing column is continuously inserted into the fixing cavity. A socket is also provided on the base, and the socket is connected to an external AC power supply to power the food cooking equipment.

[0018] When assembling the baking tray and the base of the food cooking device of the above structure, the connecting bracket is inserted into the base, and then the fixing column is inserted into the fixing cavity, so that it is convenient to check whether the baking tray is properly installed on the base. The baking tray is easily connected to the mains or outdoor power supply by the socket, which is convenient for long-term use.

[0019] In the above, preferably, the base is also provided with multiple groups of side columns. When the connecting bracket is inserted into the base, the side columns generate frictional extrusion force on the connecting bracket, and the fixed column generates plug-in force after being inserted into the fixed cavity. The sum of the frictional extrusion force and the plug-in force is greater than the base's own gravity.

[0020] The sum of the frictional extrusion force and the plug-in force of the food cooking device of the above structure is greater than the weight of the base itself, which prevents the base from falling off the baking tray when the food cooking device is moved, and the connection is more stable.

[0021] In the above, preferably, the socket is fixed on the base in a plug-in manner, and the socket includes multiple groups of fixed arms, which are arranged on two opposite surfaces of the socket, and one end of the fixed part is fixedly connected to the socket, and a suspended part is provided at one end, and the suspended part and the fixed connection are connected by a V-shaped arm. When the socket is inserted into the base, the base generates an extrusion force on the V-shaped arm to make the fixed arm move toward the base. After the socket is inserted into the base, the fixed arm deforms and recovers to contact with the base to generate a stopping force on the socket.

[0022] The fixing arm of the socket of the food cooking device with the above structure does not affect the subsequent use of the socket when the plug is pulled out from the socket, and the socket is more convenient to install and replace.

[0023] In the above, preferably, the base is provided with a heat dissipation groove, the heat dissipation groove is L-shaped, and multiple groups of magnets are provided above the base, and the magnets generate magnetic attraction to the baking tray;

[0024] The panel includes a peripheral wall, which is integrally formed with the food cooking area. The peripheral wall is connected to the food cooking area via an arc-shaped connecting portion, and the lowest point of the arc-shaped connecting portion is flush with the food cooking area. The bottom plate includes a bottom plate main board, and side protrusions and extensions integrally formed with the bottom plate main board. The side protrusions are higher than the main board and the extension. The lower end of the panel peripheral wall is connected to the extension to fix the panel and the bottom plate. Multiple groups of protrusions are provided on the bottom plate main board, and the protrusions are arranged in a M-shape and / or a circle.

[0025] The L-shaped heat sink of the food cooking device with this structure increases airflow to dissipate heat from the control panel and prevents foreign matter from falling directly into the base through the heat sink. Magnets are also incorporated to create an attractive force on the base, further strengthening the connection between the baking tray and the base. The curved connection creates a smoother cooking area with no dead corners, making it easier to clean. A raised portion on the bottom plate enhances its strength.

[0026] In the above, preferably, the conductive electrodes include two groups of negative terminals and one group of positive terminals, the positive terminals are placed in the middle of the connecting bracket, and the two groups of negative terminals are evenly placed on both sides of the positive terminal, and the heating device is provided with heating device electrodes corresponding to the conductive electrodes;

[0027] The food cooking device also includes two sets of pressure relief valves, one set of which relieves air pressure between the bottom plate and the top plate, and the other set of which relieves air pressure between the top plate and the middle plate. The pressure relief valves are one-way valves. The top plate and the middle plate are fixed by welding, and the top plate and the bottom plate are fixed by welding.

[0028] The conductive electrode arrangement of the food cooking device facilitates the secure installation of the heating membrane, allowing for normal operation regardless of whether the heating membrane is installed from the front or back. One-way pressure relief valves are provided to allow air to escape between the front and middle plates, and between the bottom plate and the front plate, preventing prolonged use from overheating and affecting the seal of the product connection. Welding the front and middle plates, and between the bottom plate and the front plate, creates an integrated connection and provides improved sealing. Using the same materials, the product is lighter and stronger.

[0029] A cooking method for a portable food cooking device is constructed, wherein a base is connected to a baking tray and a heating device is powered through the base to operate the heating device. Heat generated by the heating device is transferred to a panel to heat a food cooking area, thereby cooking food.

[0030] In the cooking method of the food cooking device of the above structure, the heating device is connected to the power supply through the base, and since the base is fixedly connected or plugged into the baking tray, the risk of leakage at the connection during use is avoided, and the use is more convenient.

[0031] The present invention has the following beneficial effects: the baking tray and the base are fixed together by plugging, and the heating device electrodes are inserted into the electrode pins at the same time. A power source is connected through a socket, and the control board and the electrode pins energize the heating device to operate. The raised portion of the middle plate and the hollow portion between the middle plate and the bottom plate improve the heat energy utilization efficiency of the food cooking device, and the food cooking area is heated more evenly, making food cooking more convenient. The use of welding for fixing makes the product lighter, stronger, and more wear-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a food cooking device according to a preferred embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of a baking tray according to a preferred embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the explosion structure of a baking tray according to a preferred embodiment of the present invention;

[0036] Figure 4 This is a schematic cross-sectional structural diagram of a baking tray according to a preferred embodiment of the present invention;

[0037] Figure 5 The baking tray of the preferred embodiment of the present invention Figure 4 A in the middle is an enlarged schematic diagram;

[0038] Figure 6 This is a schematic structural diagram of the insulating film of a baking tray according to a preferred embodiment of the present invention;

[0039] Figure 7 This is a schematic structural diagram of a heating film of a baking tray according to a preferred embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the middle plate structure of a baking tray according to a preferred embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the front structure of the bottom plate of a baking tray according to a preferred embodiment of the present invention;

[0042] Figure 10 This is a schematic structural diagram of the back side of the bottom plate of a baking tray according to a preferred embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the three-dimensional structure of the connecting bracket of the baking tray according to a preferred embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the back three-dimensional structure of a baking tray according to a preferred embodiment of the present invention;

[0045] Figure 13 This is a schematic diagram of the exploded structure of the left base of the food cooking device according to a preferred embodiment of the present invention;

[0046] Figure 14This is a schematic diagram of the exploded structure of the right base of the food cooking device according to a preferred embodiment of the present invention;

[0047] Figure 15 A schematic diagram of the structure of the right base bottom shell of the food cooking device according to a preferred embodiment of the present invention

[0048] Figure 16 Schematic diagram of the cross-sectional structure of the right base bottom shell of the food cooking device according to the preferred embodiment of the present invention

[0049] Figure 17 Schematic diagram of the socket structure of a food cooking device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0050] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0051] A portable food cooking device according to a preferred embodiment of the present invention; Figure 1 As shown, the food cooking device includes a baking tray 1 and two sets of bases 2 for supporting the baking tray. The two sets of bases are placed on either side of the lower end of the baking tray to support the baking tray. One set of bases is equipped with a socket 24 and a control panel 26 connected to the socket. The baking tray is connected to the control panel and is controlled by the control panel. The mains power is connected to the socket to power the control panel and the baking tray, so that the baking tray heats up and cooks food. The base is also equipped with a potentiometer knob 23, which is used to adjust the heating temperature of the baking tray. To increase the anti-slip properties of the baking tray, a non-slip pad 22 is provided at the bottom of the base.

[0052] Specifically, such as Figure 2-5 As shown, the baking tray 1 includes a panel 10, a bottom plate 15 arranged below the panel, a middle plate 13 arranged between the bottom plate and the panel, a heating film 12 arranged between the middle plate and the panel, an insulating film 11 arranged between the middle plate and the heating film, and an insulating film 11 also arranged between the panel and the heating film. After the heating film is heated, the heat is transferred to the panel to heat the panel, thereby cooking food in the cooking part 100.

[0053] Furthermore, if Figure 2 and Figure 5As shown, the panel 10 includes a cooking portion 100 and a peripheral wall 102 arranged on the side of the cooking portion. The cooking portion and the peripheral wall are connected by an arc-shaped connecting portion 101. It should be noted that the lowest point of the arc-shaped connecting portion 101 is flush with the plane of the cooking portion, so that the food and cooking oil are more evenly distributed in the cooking area during cooking, and the arc-shaped connecting portion 101 also facilitates the cleaning of the panel 10, and there is no dead corner for cleaning.

[0054] Furthermore, in order to improve the efficiency of thermal energy utilization, Figure 4-5 As shown, the heat from the heating film 12 toward the panel 10 directly heats the panel, while the heat toward the middle plate 13 heats the middle plate. A hollow portion 16 is provided between the middle plate and the bottom plate. The heat from heating the middle plate heats the air in the hollow portion. On the one hand, the air prevents the bottom plate 14 from being too hot and causing burns. On the other hand, the air in the upper hollow portion is heated to heat the surrounding areas of the bottom of the panel through the hollow portion, resulting in higher thermal energy utilization efficiency.

[0055] Further, if Figure 6-8 As shown, multiple groups of middle plate protrusions 130 are provided in the middle of the middle plate 13, and middle plate connecting ears 131 are provided on both sides of the middle plate. The middle plate side plates 132 are slightly higher than the middle plate main plate 133. The heating film 12 is placed on the middle plate main plate, and the middle plate side plates have a certain limiting effect on the heating film. The heating film 12 is provided with heating film square holes 120 corresponding to the middle plate protrusions 130, and heating film fixing ears 121 are provided on both sides corresponding to the middle plate connecting ears to fix the heating film to the middle plate. Multiple heating zones 124 are provided in the middle of the heating film. The heating zones can be separated by heating film square holes, so that each heating zone is connected to improve heating efficiency. In addition, due to the provision of the heating film square holes, the middle plate protrusions are in contact with the lower end of the panel or the distance is reduced. After the heat from the heating film toward one side of the middle plate heats the middle plate, the heat is transferred to the panel through the middle plate protrusions, thereby improving the utilization rate of thermal energy.

[0056] Further, if Figure 3 and Figure 6 As shown, since both the panel and the base plate are made of materials with good thermal conductivity, aluminum is generally preferred. In order to prevent the heating film from leaking out and causing electric shock to the touch panel and the middle plate, an insulating film 11 is set between the panel 10 and the heating film 12, and between the middle plate 13 and the heating film 12. The insulating film is the same size as the heating film, and an insulating film square hole 110 corresponding to the raised part of the middle plate is set on it. Insulating film fixing ears 111 are set on both sides to fix the insulating film on the middle plate to prevent the insulating film from moving and causing incomplete coverage of the heating film.

[0057] Further, if Figure 9-10As shown, the bottom plate 14 includes a main plate 140, a bottom plate side protrusion 141 arranged around the bottom plate, and a bottom plate extension 142 extending from the bottom plate side protrusion. The bottom plate side protrusion is taller than the main plate and the bottom plate extension. The bottom of the bottom plate side protrusion forms a bottom plate recess 145 to facilitate lifting the baking tray. To increase the strength of the bottom plate, the main plate is provided with bottom plate protrusions 144. The bottom plate protrusions include alternating 'P'-shaped protrusions 1440 and circular protrusions 1441, thereby enhancing the bottom plate's strength.

[0058] Furthermore, in order to facilitate the fixation of the baking tray, as Figure 3 and Figure 6-11 As shown, the baking tray 1 also includes two sets of connecting brackets 15. A sealing silicone strip 151 is provided below the bottom bracket, with a sealing groove 1510 in the middle of the sealing silicone strip. Square base holes 143 are provided on the bottom plate corresponding to the two sets of connecting brackets. The square base holes are placed in the sealing grooves, thereby connecting the baking tray to the connecting brackets. The sealing silicone strips are used to seal the space inside the front and back panels, ensuring that the space inside the front and back panels is independent. The upper ends of the connecting brackets are placed between the front and back panels, and the middle panel connecting ears are provided with middle panel recesses 1310. The middle panel recesses are positioned above the connecting brackets, thereby securing the middle panel to the two sets of connecting brackets and preventing contact between the middle panel and the bottom panel, thereby forming a hollow portion. The hollow portion is formed around the middle panel. The mid-plate connection ear 131 also includes a mid-plate connection seat through-hole 1311 located in the middle of the mid-plate recess. A heating film fixing post 150 is provided on one side of the connection bracket 150, located between the mid-plate and the front panel. The heating film has a heating film fixing hole 123 corresponding to the heating film fixing post. The insulating film also has corresponding insulating film fixing holes 113 to prevent the heating film and the insulating film from shaking. A conductive electrode 152 is provided on the other side of the connection bracket. The conductive electrode includes a positive electrode 1520 and two sets of negative electrodes 1521, one on each side of the positive electrode. The conductive electrode also includes a ground level 1522. The insulating film has an insulating film electrode hole 112 corresponding to the conductive electrode. A heating film electrode 122 is provided on the heating film corresponding to the conductive electrode. The heating film electrodes are connected to the conductive electrode, thereby energizing the heating film for heating. The heating film conductive electrode also includes a group of positive terminals 1220 and two groups of negative terminals 1221. The two groups of negative terminals are placed on both sides of the positive terminal, and the positive terminal is just in the middle of the heating film, so that the heating film can be used normally whether it is placed on the front or back. There is no need to distinguish between the front and back during assembly. It also includes a grounding terminal 1222 for grounding.

[0059] Furthermore, if Figure 8-11As shown, a pressure relief valve 17 is installed on the left connecting bracket 150. This valve releases pressure from the air between the front and middle plates, preventing a loose connection between the middle and front plates after heated air. A pressure relief valve 17 is also installed in the middle of the bottom plate, releasing pressure from the air between the bottom plate and the front plates to prevent a loose connection between the two plates after heated air. This valve is a one-way valve. A liquid flow trough 153 is also installed on the connecting bracket to prevent liquid from the baking tray or other liquids from flowing into the conductive electrode during use, which could cause the liquid to flow to the side of the connecting bracket.

[0060] Furthermore, to enhance the integrated connection and sealing performance of the baking tray, the middle plate side panels 132 are welded to the bottom of the panel 100, and the bottom plate extension 142 is welded to the lower end of the panel peripheral wall 102, thereby improving the product's sealing. Furthermore, the resistance temperature coefficient of the heating film 12 increases with increasing temperature, allowing the heating temperature to be calculated by monitoring the current value, eliminating the need for temperature sensor detection and control. This calculation can be performed using the existing resistance temperature coefficient formula, which will not be repeated here.

[0061] Furthermore, if Figure 1 and Figure 12-14 As shown, to facilitate removal and installation of the base 2 and the baking tray, the bottom of the connecting bracket 15 is provided with a baking tray insertion portion 153, and the baking tray insertion portion is also provided with two sets of baking tray fixing cavities 154. The left base 20 includes a base cover 201 and a base bottom shell 202, which are fixed together by screws. The base cover is provided with a base insertion cavity 2011 corresponding to the baking tray inserter. The baking tray insertion portion can be inserted into the base insertion cavity, thereby connecting the base to the baking tray. The base insertion cavity is provided with a base fixing post 2010 corresponding to the baking tray fixing cavity 154. The base fixing post is inserted into the baking tray insertion cavity to strengthen the connection between the base and the baking tray. The sidewalls of the base insertion cavity 2011 are also provided with multiple sets of side posts 2012. These side posts also generate friction with the baking tray insertion portion, making the connection between the baking tray and the base more secure. It should be noted that this connection force is greater than the weight of the base. This means that when the food cooking device needs to be moved, the base can be moved by simply lifting the baking tray without affecting the connection between the base and the baking tray. Disassembly requires forcing the base out. To further strengthen the connection between the base and the baking tray, two sets of magnets 25 are also provided on the left base. The magnetic attraction generated between the magnets and the base plate also secures the base plate to the baking tray. The right base 22 also utilizes the same structure as the left base for connection to the baking tray, which will not be repeated here. It should be noted that the baking tray and base can also be integrally formed, which would also fall within the scope of protection of the present invention.

[0062] Furthermore, if Figure 14As shown, the right base 21 is also provided with a control board 26 and an electrode pin 27 disposed above the control board. The base cover 201 is also provided with an electrode fixing post 2013. A conductive electrode passes through the electrode fixing post and connects to the electrode pin to power the heating film. The electrode pin can be located directly below the electrode fixing post, allowing the conductive electrode to be connected to the electrode pin by insertion. This facilitates the insertion of the conductive electrode into the electrode fixing post to energize the heating film when the baking tray is inserted into the base. A liquid flow groove 2014 is also provided on the side of the base cover 201 of the right base. The liquid flow groove is lower than the surface of the base cover to prevent liquid on the baking tray from accidentally flowing into the base and then flowing out through the liquid flow groove, preventing it from flowing into the base and being difficult to clean, or affecting the operation of the electronic components inside the base, thereby improving safety.

[0063] Furthermore, if Figure 15-16 As shown, two sets of control panel fixing slots 2020 are provided in the base bottom shell 202 of the right base. The control panel 26 can be inserted into the control panel fixing slots, which facilitates the installation and removal of the control panel. In addition, a magnet support column 204 is provided on the side of the base bottom shell. The magnet is placed above the magnet support column so that when the base cover is closed, the magnet is just located at the lower end of the base cover, reducing the distance between the magnet and the baking tray. The lower end of the base bottom shell 202 is also provided with a heat dissipation hole 203. The heat dissipation hole is arranged in an L shape to enhance the heat dissipation effect and prevent foreign matter from falling directly into the base bottom shell through the heat dissipation hole. The lower end of the base bottom shell is provided with a base recess 200 to enhance the heat dissipation effect of the heat dissipation hole.

[0064] Furthermore, if Figure 17 As shown, multiple groups of fixed arms 240 are provided on the upper and lower sides of the socket 24, one end of the fixed arm is fixedly connected to the base, and the other end is provided with a suspended end 2402, the suspended end and the fixed end are connected by a V-shaped arm, and the bending point of the V-shaped arm is the stop portion 2400, and the stop portion and the suspended end are connected by abutment 2401. When the socket is inserted into the base, the fixed arm is inserted first and then the fixed arm contacts the base. The base generates an extrusion force on the fixed arm to move the suspended end until the stop portion is lower than the socket insertion hole. After the stop portion passes over the socket insertion hole, the extrusion force of the fixed arm gradually disappears. When the suspended end 2402 moves slowly, the stop portion is higher than the socket insertion hole. Until the socket is fully inserted, the abutment 2401 contacts the socket insertion hole, and the four groups of fixed arms fix the socket to the base. When disassembling, it is necessary to press the fixed arm to complete the disassembly. There is no need to worry about the socket being separated from the base when the plug is pulled out of the socket.

[0065] During use, the baking tray 1 is inserted into the base 2, and the connecting bracket 15 is inserted into the base insertion cavity so that the conductive electrode 152 contacts the electrode pin. The base insertion column 2011 is inserted into the baking tray insertion cavity 154, and the side column 2012 exerts a compressive friction force on the connecting bracket. The magnetic attraction of the magnet 25 on the baking tray secures the baking tray to the base. After the control panel is powered on by the mains socket, the heating film 12 is heated. The heat from the heating film toward the panel directly heats the panel. The heat from the middle plate side partially heats the bottom plate through the middle plate protrusion 130, and partially heats the surrounding area of ​​the panel through the hollow portion 16 between the bottom plate 14 and the middle plate 13, thereby heating the panel more evenly and improving the thermal energy utilization rate. When the air in the middle plate 13 and the front plate 10 reaches the pressure required to open the pressure relief valve 17, the pressure relief valve is reopened to release the pressure. When the air between the bottom plate and the front plate also reaches the pressure required to open the pressure relief valve 17, the pressure relief valve is opened, thereby ensuring that the air pressure between the front plate and the middle plate, and between the front plate and the bottom plate is moderate, thus avoiding the possibility of poor sealing due to excessive pressure. The temperature can be adjusted by adjusting the potentiometer knob, which is more convenient to operate.

[0066] A cooking method of a portable food cooking device in a preferred embodiment of the present invention is based on the above-mentioned portable food cooking device. When the baking tray is inserted into the base, the electrodes of the heating device are inserted into the electrode pins for contact. After connecting to the mains or power supply through the socket, the control board is powered and the heating film is driven to heat the panel. The control board is adjusted by the potentiometer knob to change the heating temperature of the heating film. The specific structure of the food cooking device is the same as above and will not be repeated here.

[0067] It should be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A portable food cooking device, comprising a baking tray for cooking food, wherein the lower end of the baking tray is connected to a base, the base supporting the baking tray, a heating device disposed within the baking tray, and a control panel disposed on the base corresponding to the heating device, characterized in that: The baking tray comprises a panel and a bottom plate, a middle plate is provided between the bottom plate and the panel, and the heating device is placed between the middle plate and the panel. The heating device heats the panel and the bottom plate and then transfers the heat to the panel to heat and cook food.

2. The food cooking device according to claim 1, characterized in that: The baking tray and the base are fixed by plugging. The heating device is a heating film. Both sides of the heating film can be heated. When the upper side of the heating film is heated, the panel is heated. When the lower side is heated, the middle plate is heated. An insulating film is provided on the upper side and / or the lower side of the heating film. The middle plate is provided with a raised portion, and the heating film is correspondingly provided with a square hole. The raised portion passes through the square hole. The lower side of the heating film heats the middle plate and then transfers heat to the bottom of the panel through the raised portion.

3. The food cooking device according to claim 2, characterized in that: A gap is left between the middle plate and the bottom plate to form a hollow portion, which delays the heat transfer from the middle plate to the bottom plate. The hollow portion extends to the bottom of the panel. The heat of the middle plate is transferred to the bottom of the panel through the hollow portion to heat the bottom of the panel.

4. The food cooking device according to any one of claims 1 to 3, characterized in that: The baking tray also includes a connecting bracket that is plugged and fixed to the base. The connecting bracket is connected to the bottom plate and partially passes through the bottom plate. The middle plate is placed above the connecting bracket. Two groups of connecting brackets are provided, corresponding to two groups of bases. One group of connecting brackets is provided with a conductive electrode for powering the heating device, and the base is provided with an electrode pin corresponding to the conductive electrode. The conductive electrode is connected to the electrode pin in a plug-in manner to enable the heating device to be powered on.

5. The food cooking device according to claim 4, characterized in that: A fixing column is provided under the connecting bracket, and a fixing cavity is provided on the base corresponding to the fixing column. After the connecting bracket is inserted into the base, the fixing column is inserted into the fixing cavity by continuing to be inserted. A socket is also provided on the base, and the socket is connected to an external AC power supply to power the food cooking device.

6. The food cooking device according to claim 5, characterized in that: The base is also provided with multiple groups of side columns. When the connecting bracket is inserted into the base, the side columns generate frictional extrusion force on the connecting bracket. After the fixing column is inserted into the fixing cavity, an insertion and extraction force is generated. The sum of the frictional extrusion force and the insertion and extraction force is greater than the base's own gravity.

7. The food cooking device according to claim 5, characterized in that: The socket is fixed on the base in a plug-in manner. The socket includes multiple groups of fixed arms, which are arranged on two opposite surfaces of the socket. One end of the fixed part is fixedly connected to the socket, and the other end is provided with a suspended part. The suspended part and the fixed connection are connected by a V-shaped arm. When the socket is inserted into the base, the base generates an extrusion force on the V-shaped arm to make the fixed arm move toward the base. After the socket is inserted into the base, the fixed arm deforms and recovers to contact the base to generate a stopping force on the socket.

8. The food cooking device according to claim 4, characterized in that: The base is provided with a heat dissipation groove, which is L-shaped, and multiple groups of magnets are provided above the base, and the magnets generate magnetic attraction to the baking tray; The panel includes a peripheral wall, which is integrally formed with the food cooking area. The peripheral wall is connected to the food cooking area via an arc-shaped connecting portion, and the lowest point of the arc-shaped connecting portion is flush with the food cooking area. The bottom plate includes a bottom plate main board, and side protrusions and extensions integrally formed with the bottom plate main board. The side protrusions are higher than the main board and the extension. The lower end of the panel peripheral wall is connected to the extension to fix the panel and the bottom plate. Multiple groups of protrusions are provided on the bottom plate main board, and the protrusions are arranged in a M-shape and / or a circle.

9. The food cooking device according to claim 8, characterized in that: The conductive electrodes include two groups of negative terminals and one group of positive terminals, the positive terminals are placed in the middle of the connecting bracket, and the two groups of negative terminals are evenly placed on both sides of the positive terminal, and the heating device electrodes are provided on the heating device corresponding to the conductive electrodes; The food cooking device also includes two sets of pressure relief valves, one set of which releases the air between the bottom plate and the top plate, and the other set of which releases the air between the top plate and the middle plate, and the pressure relief valves are one-way valves; The panel and the middle plate are fixed by welding, and the panel and the bottom plate are fixed by welding.

10. A cooking method using a portable food cooking device, characterized in that: The base is connected to the baking tray and the heating device is powered through the base to operate. The heat generated by the heating device is transferred to the panel to heat the food cooking area, thereby cooking the food.

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