Graphene heating pipe and cooking equipment
By using graphene heating pipes in the multi -function oven, the two ends have a bending section, which solves the problem of insufficient heating efficiency of the internal edge area, and achieves a more uniform baking effect and improved cooking efficiency.
Patent Information
- Application Number
- CN202420758186.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In a multi-function oven that combines microwave function, the microwave energy distribution inside the inner liner is uneven, especially in the left and right areas of the inner liner, the microwave energy attenuation is obvious, resulting in insufficient heating effect and affecting the cooking quality and efficiency.
Design a graphene heating pipe, which has a bending section at both ends, improves the effective area and thermal efficiency of thermal heat, and sets up the edge area near the inner tendon in the cooking equipment to improve the heating efficiency.
By improving the effective area and thermal efficiency of the graphene heating pipe, it significantly improves the heating efficiency of the end gallbladder edge area, improves the baking uniformity of cooking equipment and the overall baking effect, and makes up for the insufficient distribution of microwave energy.
Smart Images
Figure CN222424036U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of household appliances, and in particular to a graphene heating tube and cooking equipment. Background Art
[0002] At present, the functions of oven products are not limited to baking, but are developing towards multifunctionality, so micro ovens, micro steam ovens, micro steam ovens, micro fryers, etc. have been produced one after another. Graphene heating tubes have higher surface temperature and penetration ability, and the heating speed is faster than other heating tubes, such as metal heating tubes, carbon fiber heating tubes, etc., so they have broad application prospects in oven products.
[0003] At present, the graphene heating tube structure used in oven products is a straight tube structure. However, in the design of multifunctional ovens combined with microwave functions, there is a common problem, that is, the microwave energy distribution inside the inner pot is not uniform, especially in the left and right areas of the inner pot. Due to the long microwave propagation path, the microwave energy attenuates significantly here, and the heating effect is obviously insufficient compared to the center of the cavity, affecting the overall cooking quality and efficiency of the food. Therefore, how to effectively optimize the energy distribution in the internal space of the oven, especially to improve the heating efficiency of the edge area of the inner pot, has become a technical problem that needs to be solved urgently. Utility Model Content
[0004] Based on the technical problems of uneven energy distribution inside the cooking cavity and poor heating effect in the edge area in the prior art, the utility model provides a graphene heating tube and cooking equipment. The two ends of the graphene heating tube have bent sections, which can increase the effective heating area of the graphene heating tube and improve the thermal efficiency. At the same time, when used in the cooking equipment, the bent section can be arranged close to the edge area of the inner pot, which can effectively improve the heating efficiency of the edge area of the inner pot and enhance the baking uniformity and overall baking effect of the cooking equipment.
[0005] The utility model provides a graphene heating tube, which is used in a cooking device with a microwave function, and is characterized in that it comprises:
[0006] A tube body, the tube body comprising a straight tube section and bending sections respectively bent in an S-shape at both ends of the straight tube section; a graphene layer is provided on the inner surface of the tube body;
[0007] Electrodes are disposed at two ends of the tube body, and the electrodes are electrically connected to the graphene layer;
[0008] Insulating heads are fixed at both ends of the tube body.
[0009] In one embodiment of the present application, the bending section is formed by connecting a plurality of parallel straight pipe sections and semicircular arc pipe sections.
[0010] In one embodiment of the present application, the bent sections at both ends of the straight pipe section are all located on the same side of the axis of the straight pipe section.
[0011] In one embodiment of the present application, the bending sections at both ends of the straight pipe section are symmetrically arranged with the perpendicular bisector of the straight pipe section as the axis.
[0012] The present application also includes a cooking device comprising:
[0013] An inner pot has a cooking cavity, and a through hole is opened in the center of the top wall or the bottom wall of the inner pot;
[0014] A microwave device, disposed on the inner pot, emitting microwaves to the cooking cavity through the through hole;
[0015] It also includes the above-mentioned graphene heating tube; the graphene heating tube is horizontally fixed on the inner wall of the inner tank close to the inner wall of the inner tank, and the straight tube section is located on one side of the center of the inner wall of the inner tank, and is arranged opposite to the center of the inner wall of the inner tank.
[0016] In one embodiment of the present application, a through hole is opened in the center of the top wall of the inner pot; two graphene heating tubes are provided and fixed to the top of the inner pot, and the straight tube sections of the two graphene heating tubes are respectively arranged on the front and rear sides of the through hole.
[0017] In one embodiment of the present application, the distance between the outer wall of the graphene heating tube and the inner wall of the inner tank is 35-45 mm.
[0018] In one embodiment of the present application,
[0019] The microwave device comprises a microwave generator, a waveguide box connected to the microwave generator, and a microwave stirrer located at a microwave outlet of the waveguide box;
[0020] The microwave generator is arranged at the top rear side of the inner pot, and the waveguide box is arranged at the top of the inner pot; a through hole is provided on the top wall of the inner pot, and the microwave outlet of the waveguide box is directly opposite to the through hole, and the microwave stirrer is fixed in the inner pot;
[0021] The graphene heating tube is arranged on the top of the inner pot and close to the back side of the inner pot. The bent sections of the graphene heating tube are all located on one side of the axis of the straight tube section, and the straight tube section is arranged away from the back side of the inner pot.
[0022] In one embodiment of the present application, an isolation cover is provided on the inner wall of the inner pot, an isolation cavity is formed between the isolation cover and the inner wall of the inner pot, and the microwave agitator is disposed in the isolation cavity.
[0023] In one embodiment of the present application, the top of the inner pot has an upwardly protruding groove portion, the through hole is opened in the center of the groove portion, and the side wall of the groove portion is opened with a mounting hole, the graphene heating tube is arranged in the groove portion, and its two ends are fixedly installed in the mounting holes.
[0024] Compared with the prior art, the advantages and positive effects of the utility model are:
[0025] The above-mentioned graphene heating tube has bent sections at both ends, which can not only increase the effective heating area of the graphene heating tube and improve the thermal efficiency; at the same time, the bent sections are used in cooking equipment with microwave function and are arranged close to the edge area of the inner pot, which can effectively improve the heating efficiency of the edge area of the inner pot. The improved thermal efficiency can make up for the lack of microwave energy in the edge area, thereby improving the energy distribution of the entire internal space of the inner pot, and significantly improving the baking uniformity and overall baking effect of the cooking equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 This is a schematic diagram of the internal structure of the cooking device of the utility model;
[0028] Figure 2 This is a schematic diagram of the structure inside the inner pot of the cooking device of the utility model;
[0029] Figure 3 It is a schematic diagram of the structure of the inner pot in the cooking device of the utility model;
[0030] Figure 4 This is a three-dimensional diagram of the graphene heating tube of the utility model;
[0031] Figure 5 This is a front view of the graphene heating tube of the utility model;
[0032] Figure 6 This is a bottom view of the interior of the inner pot of the cooking device of the utility model;
[0033] Description of reference numerals:
[0034] Inner container 100; groove portion 110; through hole 111; mounting hole 112;
[0035] Microwave device 200; microwave generator 210; waveguide box 220;
[0036] Graphene heating tube 300; tube body 310; straight tube section 311; bent section 312; insulating head 320; straight tube section 3121; semicircular arc tube section 3122;
[0037] Isolation cover 400. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0039] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0040] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0042] Reference Figure 4-Figure 5 According to the embodiment of the present application, a graphene heating tube is proposed for use in a cooking device with a microwave function. The cooking device may be a microwave oven, a microwave steam-bake-in-one machine, a microwave steam-bake-fry-in-one machine, or other cooking appliances with a microwave function.
[0043] See also Figure 4The graphene heating tube 300 includes a tube body 310 , electrodes arranged at both ends of the tube body, and an insulating head 320 .
[0044] The inner surface of the tube body 310 is provided with a graphene layer. The tube body 310 is usually made of a material that is resistant to high temperatures and has good insulation properties, such as a quartz tube. The quartz tube has high heat resistance, chemical stability, and good dielectric properties, and is suitable as a carrier of the graphene heating element.
[0045] Electrodes (not shown) are disposed at both ends of the tube body and are usually made of highly conductive materials such as copper, nickel, platinum, etc., to ensure that an external power source can be efficiently connected to the graphene layer in the graphene heating tube 300 to provide current to generate heat through the graphene coating.
[0046] In order to avoid the risk of short circuit and electric shock, an insulating head 320, such as ceramic, glass, Teflon, etc., is provided between the electrode and the non-conductive part of the graphene heating tube to ensure electrical safety.
[0047] In the present application, the tube body 310 includes a straight tube section 311 and bent sections 312 that are respectively bent in an S-shape at both ends of the straight tube section 311. The bent sections 312 increase the effective heating area of the graphene heating tube 300.
[0048] Reference Figure 1-Figure 3 and Figure 6 According to an embodiment of the present application, a cooking device is proposed.
[0049] The cooking device includes an inner pot 100 , a microwave device 200 disposed on the inner pot 100 , and at least one graphene heating tube 300 disposed in the inner pot 100 .
[0050] The inner pot 100 has a cooking cavity, and food is placed in the cooking cavity for heating. A through hole 111 is provided in the center of the top wall or the bottom wall of the inner pot 100 .
[0051] The microwave device 200 is disposed on the inner pot 100, and emits microwaves to the cooking cavity through the through hole 111. The microwaves penetrate the food, causing the moisture and some other polar substances in the food to move and generate heat by friction, thereby heating the food.
[0052] The graphene heating tube 300 is arranged in the cooking cavity. The graphene heating tube 300 generates heat when powered on, and transfers the heat to the food through heat conduction and radiation to heat the food.
[0053] Since microwaves are emitted from the center of the inner wall of the inner pot 100 into the cooking cavity, the microwave emission transmission distance is long, the microwave energy is relatively weak, and the microwaves are relatively uneven in the edge area of the inner cavity of the inner pot 100 compared to the middle position, resulting in poor heating effect in the peripheral area of the inner pot 100.
[0054] In order to compensate for part of the energy in the surrounding area of the inner tank 100, in the present application, the tube body 310 of the graphene heating tube has a straight tube section 311 and a bending section 312 which is bent in an S-shape at both ends of the straight tube section 311.
[0055] The graphene heating tube 300 is horizontally fixed on the inner wall of the inner liner 100 near the inner wall of the inner liner 100, and the straight tube section 311 is located on one side of the center of the inner wall of the inner liner 100, and is arranged opposite to the center of the inner wall of the inner liner 100, that is, the straight tube section 311 of the graphene heating tube 300 is arranged near the center of the inner liner 100, and the bent section 312 is arranged near both sides of the inner liner 100. The bent section 312 increases the effective heating area of the graphene heating tube 300. The bent section 312 is located in the edge area of the inner liner 100, which can improve the heating efficiency of the edge area of the inner liner 100 and improve the total energy distribution of the inner space of the inner liner 100.
[0056] The graphene heating tube 300 has a bending section 312, which can not only increase the effective heating area of the graphene heating tube 300 and improve the thermal efficiency; at the same time, the bending section 312 is arranged close to the edge area of the inner pot 100, which can effectively improve the heating efficiency of the edge area of the inner pot 100. The improved thermal efficiency can make up for the lack of microwave energy in the edge area, thereby improving the energy distribution of the entire internal space of the inner pot 100, and significantly improving the baking uniformity and overall baking effect of the cooking equipment.
[0057] The bent sections 312 at both ends of the straight pipe section in the present application may all be located on the same side of the axis of the straight pipe section 311. Alternatively, a portion of the bent section 312 is located on one side of the axis of the straight pipe section 311, and another portion of the bent section 312 is located on the other side of the axis of the straight pipe section 311.
[0058] The S-shaped bending section 312 is formed by connecting multiple parallel straight pipe sections 3121 and semicircular pipe sections 3122. The straight pipe sections 3121 can be arranged side by side at a small interval, which can increase the pipe body area of the bending section 312 and facilitate production. The two bending sections 312 on both sides of the straight pipe section 311 can be symmetrically arranged.
[0059] The graphene heating tube 300 in the present application can be arranged on the inner wall of the inner pot 100 on the same side as the through hole 111 (the position where the microwave enters the inner pot), such as the through hole 111 is arranged on the top wall of the inner pot 100, and the graphene heating tube 300 is also installed on the top of the inner pot 100. Alternatively, the graphene heating tube 300 can also be arranged on the inner wall of the inner pot 100 on the opposite side with the through hole 111, such as the through hole 111 is arranged on the top wall of the inner pot 100, and the graphene heating tube 300 is arranged on the bottom of the inner pot 100. Alternatively, the graphene heating tube 300 is arranged on the left and right side walls of the inner pot 100.
[0060] In some embodiments of the present application, a through hole 111 is opened at the center of the top wall of the inner pot 100 , and the microwave device 200 is disposed on the top of the inner pot 100 .
[0061] The graphene heating tube 300 is arranged on the top of the inner pot 100 , the straight tube section 311 of the graphene heating tube 300 is arranged on the front side or the rear side of the through hole 111 , and the bent section 312 of the graphene heating tube 300 is arranged close to the left and right side walls of the inner pot 100 .
[0062] Preferably, two graphene heating tubes 300 are provided, which are respectively located at the front and rear sides of the through hole 111. The two graphene heating tubes 300 have the same shape. The graphene heating tube 300 located at the front side is arranged close to the door body, and the graphene heating tube 300 located at the rear side is arranged close to the back of the inner tank 100.
[0063] The distance between the graphene heating tube 300 located at the front side and the front opening (door body) of the inner pot 100 is 50-70 mm, preferably 63 mm. The distance between the graphene heating tube 300 located at the rear side and the back of the inner pot 100 is 60-80 mm, preferably 73 mm.
[0064] The two graphene heating tubes 300 are respectively arranged close to the door and the back of the inner pot 100, so that the heat generated by the graphene heating tube 300 can be radiated to the outermost area of the inner pot 100 as much as possible, so that all areas of the inner pot 100 have a good cooking effect. At the same time, there is a certain distance between the graphene heating tube 300 and the back of the inner pot 100 and the door body to prevent the back of the inner pot 100 and the inner side of the door from being baked by the extremely high temperature of the graphene heating tube 300 and causing them to become black or deformed.
[0065] Further, the distance between the outer wall of the graphene heating tube 300 and the inner wall of the inner liner 100 is 35-45 mm. That is, in the present application, the distance between the outer wall of the graphene heating tube 300 and the top wall of the inner liner 100 is 35-45 mm.
[0066] Considering the safe baking distance between the graphene heating tube 300 and the inner pot 100, in order to ensure that the inner pot 100 will not be baked at an extremely high temperature by the graphene heating tube 300 and become black or deformed, and considering the whole machine transportation process, to ensure that the top of the inner pot 100 will not be squeezed after being deformed, the distance between the graphene heating tube 300 and the top wall of the inner pot 100 is set to be greater than 35mm. At the same time, in order to maximize the capacity of the inner pot 100, the distance should not be too large, and the distance between the graphene heating tube 300 and the top wall of the inner pot 100 is set to be less than 45mm, and the preferred distance is 40.6mm.
[0067] In the present application, the microwave device 200 includes a microwave generator 210, a waveguide box 220 connected to the microwave generator 210, and a microwave stirrer (not shown) located at the microwave outlet of the waveguide box 220. The microwave generator 210 and the waveguide box 220 are arranged outside the inner pot 100, the microwave outlet of the waveguide box 220 is directly opposite to the through hole 111, and the microwave stirrer is fixed in the inner pot 100.
[0068] The microwave stirrer includes a microwave stirring blade driven by a motor. The microwave stirring blade is rotatable and made of metal material, which can reflect microwaves in multiple directions, so that the microwaves can be distributed more evenly in the cavity, achieving a better heating effect.
[0069] In the present application, the microwave generator 210 is disposed at the top rear side of the inner pot 100, and the waveguide box 220 is disposed at the top of the inner pot 100. It should be understood that the microwave generator 210 may also be disposed at the side of the inner pot 100, and the microwave is guided from the microwave generator 210 at the side to the top of the inner pot 100 through the waveguide box 220.
[0070] When the microwave generator 210 is arranged at the top rear side of the inner pot 100 and the graphene heating tube 300 is arranged at the top of the inner pot 100, in order to prevent the high temperature generated by the graphene heating tube 300 from affecting the microwave generator 210, the graphene heating tube 300 at the rear side is installed so that the straight tube section 311 of the graphene heating tube 300 is arranged away from the back side of the inner pot 100, and the position of the microwave generator 210 at the rear side of the inner pot 100 is avoided to minimize the impact on the microwave generator 210 and ensure the safe operation of the microwave generator 210.
[0071] In some embodiments of the present application, the front and rear positions of the straight tube section 311 of the graphene heating tube 300 located on the front side are not specifically limited, and are preferably arranged close to the door body to compensate for the energy of the front edge area of the inner tank 100.
[0072] In the present application, an isolation cover 400 is further provided on the inner wall of the inner pot 100, and an isolation cavity is formed between the isolation cover 400 and the inner wall of the inner pot 100, and the microwave stirrer is arranged in the isolation cavity. The isolation cover 400 is made of a material that microwaves can pass through, and isolates the microwave stirrer from the cooking cavity to play an isolation and protection role. The two graphene heating tubes 300 are respectively located on the front and rear sides of the isolation cover 400, and do not contact the isolation cover 400.
[0073] In order to ensure the capacity of the cooking cavity, the top of the inner pot 100 has an upwardly protruding groove portion 110, a through hole 111 is provided in the center of the groove portion 110, and mounting holes 112 are provided on the left and right side walls of the groove portion 110. The graphene heating tube 300 is arranged in the groove portion 110, and its two ends are fixedly installed in the mounting holes 112. The graphene heating tube 300 and the isolation cover 400 are both located in the groove portion 110 and do not occupy the volume of the cooking cavity. At the same time, the groove portion 110 can also play a role in enhancing the strength of the top of the inner pot 100 and reducing the risk of the top of the inner pot 100 being compressed and deformed.
[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.
Claims
1. A graphene heating tube, used in a cooking device with microwave function, characterized in that: include: A tube body, the tube body comprising a straight tube section and bending sections respectively bent in an S-shape at both ends of the straight tube section; a graphene layer is provided on the inner surface of the tube body; Electrodes are disposed at two ends of the tube body, and the electrodes are electrically connected to the graphene layer; Insulating heads are fixed at both ends of the tube body.
2. The graphene heating tube according to claim 1, characterized in that: The bending section is formed by connecting a plurality of parallel straight pipe sections and semicircular arc pipe sections.
3. The graphene heating tube according to claim 1, characterized in that: The bent sections at both ends of the straight pipe section are all located on the same side of the axis of the straight pipe section.
4. The graphene heating tube according to claim 1, characterized in that: The bending sections at both ends of the straight pipe section are symmetrically arranged with the perpendicular bisector of the straight pipe section as the axis.
5. A cooking device, characterized in that: include: An inner pot has a cooking cavity, and a through hole is opened in the center of the top wall or the bottom wall of the inner pot; A microwave device, disposed on the inner pot, emitting microwaves to the cooking cavity through the through hole; It also includes the graphene heating tube as described in any one of claims 1-4; the graphene heating tube is horizontally fixed on the inner wall of the inner tank close to the inner wall of the inner tank, and the straight tube section is located on one side of the center of the inner wall of the inner tank, and is arranged opposite to the center of the inner wall of the inner tank.
6. The cooking device according to claim 5, characterized in that A through hole is provided at the center of the top wall of the inner pot; two graphene heating tubes are provided and fixed to the top of the inner pot, and the straight tube sections of the two graphene heating tubes are respectively provided at the front side and the rear side of the through hole.
7. The cooking device according to claim 5, characterized in that The distance between the outer wall of the graphene heating tube and the inner wall of the inner container is 35-45 mm.
8. The cooking device according to claim 5, characterized in that The microwave device comprises a microwave generator, a waveguide box connected to the microwave generator, and a microwave stirrer located at a microwave outlet of the waveguide box; The microwave generator is arranged at the top rear side of the inner pot, and the waveguide box is arranged at the top of the inner pot; a through hole is provided on the top wall of the inner pot, and the microwave outlet of the waveguide box is directly opposite to the through hole, and the microwave stirrer is fixed in the inner pot; The graphene heating tube is arranged on the top of the inner pot and close to the back side of the inner pot. The bent sections of the graphene heating tube are all located on one side of the axis of the straight tube section, and the straight tube section is arranged away from the back side of the inner pot.
9. The cooking device according to claim 8, characterized in that An isolation cover is arranged on the inner wall of the inner pot, an isolation cavity is formed between the isolation cover and the inner wall of the inner pot, and the microwave stirrer is arranged in the isolation cavity.
10. The cooking device according to claim 8, characterized in that The top of the inner pot has an upwardly protruding groove portion, the through hole is opened in the center of the groove portion, and the side wall of the groove portion is opened with a mounting hole. The graphene heating tube is arranged in the groove portion, and its two ends are fixedly installed in the mounting holes.