Portable microwave oven

Abstract

The invention provides a portable microwave oven and relates to the technical field of microwave ovens.The portable microwave oven comprises a microwave oven body, a corrugated cylinder is arranged on one side of the microwave oven body, a door frame is arranged at an end opening of the corrugated cylinder, the two ends of the corrugated cylinder are fixed to the microwave oven body and the door frame respectively, and a door body is rotationally installed at an end opening of the door frame; when the microwave oven is not used, the corrugated cylinder can be pressed to compress the space so that the microwave oven can be conveniently carried, when the microwave oven is used, the corrugated cylinder can be pulled open to be stretched for placing food, and a microwave emitter is arranged on the side face of the microwave oven body relative to the inside of the corrugated cylinder. The portable microwave oven can be easily placed in a vehicle-mounted storage box or an outdoor backpack, is matched with the adaptive handle at the top of the microwave oven main body, is convenient to carry, perfectly adapts to outdoor, vehicle-mounted and other mobile scenes, and solves the problem that a traditional portable microwave oven is too large in size and difficult to move and carry.

Description

Technical Field

[0001] This invention relates to the field of microwave oven technology, and more particularly to portable microwave ovens. Background Technology

[0002] Microwave ovens, as common household appliances, primarily function to heat food using microwaves. Their rapid heating and ease of operation have led to their widespread use not only in homes but also in mobile applications such as outdoor camping, long-distance road trips, and construction site work, giving rise to portable microwave ovens. Current portable microwave ovens mainly consist of the main body, a fixed-volume heating cavity, a microwave transmitter, a control device, and a handle. Their working principle involves connecting to the mains power grid via a plug, and using the control device to activate the microwave transmitter. This allows microwaves to act on the food within the sealed heating cavity, causing water molecules in the food to vibrate rapidly and generate heat, thus achieving rapid heating.

[0003] Traditional portable microwave ovens are difficult to fit easily into car storage boxes or outdoor backpacks. This excessive size makes the product inconvenient to carry in mobile scenarios such as outdoor camping and long-distance road trips. Users need to occupy a lot of extra storage space, and it is even impossible to carry it flexibly with the trip, which seriously limits the promotion and application of portable microwave ovens in mobile scenarios. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a portable microwave oven.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a portable microwave oven, including a microwave oven body, a control unit provided on the surface of the microwave oven body, and a folding telescopic part provided on the microwave oven body, wherein the folding telescopic part can be stretched out when in use and can be squeezed and folded in the storage state, and a door frame is installed on one side of the folding telescopic part, wherein a door body is rotatably installed at the port of the door frame.

[0006] Preferably, the folding and telescopic part is a corrugated cylinder with the opening facing upwards, and the corrugated cylinder can be folded and telescopically extended in the vertical direction.

[0007] Preferably, the folding and telescopic part is a corrugated cylinder that can fold and telescopic in a fan shape around the microwave oven body.

[0008] Preferably, the folding telescopic part is a corrugated cylinder that can be folded and extended in the horizontal direction. The two ends of the corrugated cylinder are fixed to the microwave oven body and the door frame, respectively. When not in use, the corrugated cylinder can be pressed to compress the space for easy carrying. When in use, the corrugated cylinder can be pulled open to stretch it for food placement.

[0009] Preferably, the corrugated cylinder is a double-layer metal mesh to prevent microwave leakage.

[0010] Preferably, a buckle is rotatably installed on the door frame. When the door is placed on the door frame, the buckle can be used to fix the door to the door to seal the internal space of the corrugated cylinder.

[0011] Preferably, the upper end of the microwave oven body is provided with a slot, and a handle is installed inside the slot, so that the microwave oven body can be carried by the handle.

[0012] Preferably, a folding section is provided between the microwave oven body and the door frame, which can reinforce the corrugated cylinder.

[0013] Preferably, the folding part includes a first folding rod and a second folding rod. The first folding rod is rotatably connected to the microwave oven body, and the second folding rod is rotatably connected to the door frame. A rotating groove is provided on the side of the first folding rod and the second folding rod that is close to each other. The first folding rod and the second folding rod are attached together and rotatably connected by means of the rotating groove.

[0014] Preferably, the control unit includes a time control switch, a fire control switch, and a button. The time control switch can control the working time of the microwave transmitter, the fire control switch can control the working power of the microwave transmitter, and the button can start the microwave transmitter according to a preset program.

[0015] Preferably, the corrugated cylinder has a placement plate inside, which can hold food plates and can be compressed and folded along with the corrugated cylinder.

[0016] Preferably, the two placement plates are rotatably connected by a rotating hinge, and the placement plates and the corrugated cylinder are rotatably connected.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, a corrugated tubular foldable sidewall structure made of double-layer metal fine mesh soft material is used. After folding, the volume is reduced from 35×30×35cm in the unfolded state to 35×30×10cm, a reduction of 70%. It can be easily put into a car storage box or outdoor backpack. With the adaptive handle on the top of the microwave oven body, it is convenient to carry by hand and perfectly adapts to outdoor, car and other mobile scenarios, solving the problem that traditional portable microwave ovens are too large to be moved and carried.

[0018] 2. In this invention, the foldable sidewall structure adopts a double-layer metal mesh design with a mesh diameter of 0.05mm, combined with a magnetic folding door and a 2mm thick conductive rubber sealing strip. The sealing is achieved through an external knob lock. In addition, a safety interlock mechanism in the folded state is added. When not fully unfolded, the Hall sensor will trigger a relay to cut off the high-voltage circuit, so that the microwave leakage is controlled within 0.5mW / cm², which far exceeds the ≤5mW / cm² requirement of GB4706.21 standard, thus avoiding the microwave leakage risk of foldable microwave ovens.

[0019] 3. In this invention, the folding wall material is made of carbon fiber reinforced resin matrix composite material with a density of only 1.3g / cm³ and a temperature resistance of ≥180℃. It is 65% lighter than traditional stainless steel while possessing high strength. The three-section conductive carbon fiber base plate is 1.5mm thick, and the surface is coated with an aluminum layer to enhance microwave reflection efficiency. The measured torsional strength reaches 280N / m², far exceeding the national standard requirements, and can bear a weight of 3kg without deformation. The folding part adopts a double positioning point mechanical buckle design with a tensile strength of ≥50N. The folding mechanism has undergone 20,000 opening and closing tests without jamming or structural damage, and the deformation rate is <0.5%. It can effectively withstand the thermal stress during microwave heating and solves the problems of insufficient structural strength and easy deformation of existing folding microwave ovens.

[0020] 4. In this invention, a 12mm diameter hole is opened at the top of the foldable side wall structure. After being stretched and unfolded, it automatically conducts heat dissipation channels and achieves efficient heat dissipation through natural convection. This reduces the maximum temperature of the cavity to 68℃ during heating, which is significantly lower than the 85℃ cavity temperature of traditional products. This greatly reduces the wear and tear on core components such as the magnetron caused by high temperature, extends the service life of the equipment, and avoids malfunctions caused by poor heat dissipation.

[0021] 5. In this invention, the microwave oven body adopts an electrical cavity separation design, with the magnetron assembly, inverter board, and circuit board placed in separate independent areas. The core components adopt a detachable integrated modular solution, with a disassembly and assembly time of ≤30 seconds, facilitating quick replacement and maintenance in outdoor scenarios. The control unit is equipped with a rotary time control switch, a fire control switch, and multiple function buttons, supporting heating time, power adjustment, and preset program activation. The operation is simple and intuitive, adapting to the heating needs of different people and foods. When storing, simply manually release the buckle of the folding part, press the foldable side wall structure to the retracted state, and tighten the side nylon positioning strap (tensile strength 800N) to lock the folded state. The operation steps are simple.

[0022] 6. In this invention, the three-section conductive carbon fiber base plate forms a continuous reflective surface after unfolding. The surface aluminum coating has a microwave reflectivity of ≥98%, which enables the microwaves emitted by the microwave transmitter to be uniformly reflected in the 20L heating cavity and act on all parts of the food. Combined with the base plate structure that can stably support the food, it ensures that the food is heated evenly, avoids uneven heating in some areas, and improves the heating quality. Attached Figure Description

[0023] Figure 1 This invention provides a structural schematic diagram of a portable microwave oven in a stretched state. Figure 2 This invention provides a structural schematic diagram of a portable microwave oven in its folded state. Figure 3 This invention proposes a portable microwave oven. Figure 1 Diagram showing the door in open position; Figure 4 This invention provides a schematic diagram of the structure of the placement plate in a portable microwave oven. Figure 5 This is a schematic diagram of the folding section in a portable microwave oven, as proposed in this invention.

[0024] Illustration: 1. Microwave oven body; 2. Corrugated cylinder; 3. Door frame; 4. Door body; 5. Buckle; 6. Folding part; 61. Folding rod No. 1; 62. Folding rod No. 2; 63. Rotary groove; 7. Control part; 71. Time control switch; 72. Fire control switch; 73. Button; 8. Slot; 9. Handle; 10. Placement plate; 11. Rotating hinge. Detailed Implementation

[0025] like Figure 1-5As shown, this invention provides a portable microwave oven. The main body 1 of the microwave oven has a rectangular structure, is made of food-grade ABS plastic, and is 3mm thick. The top is integrated with a handle for easy carrying. The handle is sized to fit the hand and can be placed against the surface of the main body when not in use to reduce space occupation. The interior of the main body adopts an electrical cavity separation design, placing the magnetron assembly in an independent first area and the frequency converter board and circuit board in a second area. The two areas do not interfere with each other. Moreover, the core components adopt a detachable integrated modular component solution, and the disassembly and assembly time does not exceed 30 seconds, which is convenient for quick replacement and maintenance in outdoor scenarios. One side of the microwave oven body 1 is equipped with a foldable sidewall structure. This structure is a corrugated tube made of double-layer metal fine mesh soft material with a mesh diameter of 0.05mm. It can effectively prevent microwave leakage and has excellent folding and stretching properties. Its material is carbon fiber reinforced resin matrix composite material with a density of no more than 1.3g / cm³ and a temperature resistance of no less than 180℃. It is 65% lighter than traditional stainless steel. The two ends of the foldable sidewall structure are firmly fixed to the microwave oven body 1 and the door frame 3 by welding. The door frame 3 is made of food-grade ABS plastic, the same as the body, to ensure the consistency and durability of the overall structure. The top of the foldable sidewall structure has a hole with a diameter of 12mm. When stretched out, it can automatically conduct heat dissipation channels to achieve natural convection heat dissipation and effectively reduce the cavity temperature. The door frame 3 is equipped with a magnetic folding door at its port. The edge of the door body 4 is fitted with a 2mm thick conductive rubber sealing strip with a conductivity of 5×10⁻³S / cm, strictly complying with the GB4706.21 safety certification standard. An external knob lock is provided on the outside of the door frame 3 to achieve a reliable seal when the door body 4 is closed, with a sealing performance of 99.8%. A folding part 6 is provided between the door frame 3 and the microwave oven body 1. The folding part 6 includes a first folding rod 61 and a second folding rod 62, both of which are made of lightweight, high-strength alloy material. One end of the first folding rod 61 is connected to the microwave oven body 1 via a pivot. The side of body 1 is rotatably connected, and one end of the second folding rod 62 is rotatably connected to the side of the door frame 3 via a pivot. The extension arm of the folding part 6 adopts a double positioning point design, and the unfolded position is equipped with a mechanical buckle 5 with a tensile strength of not less than 50N to prevent shrinkage during use. The buckle 5 needs to be manually released when storing. The side of the microwave oven body 1 is equipped with a nylon positioning strap with a tensile strength of 800N. Tightening the strap can lock the folded state, ensuring that the volume is reduced by 70% after folding, from 35×30×35cm to 35×30×10cm, making it easy to carry and store. The interior of the foldable side wall structure is equipped with a three-section conductive carbon fiber base plate. The carbon fiber plate is 1.5mm thick and has a conductivity of 1.2×10. 6The microwave oven features a 0.1μm thick aluminum layer on its surface, enhancing microwave reflection efficiency with a reflectivity of no less than 98%. Three carbon fiber plates are connected by hinges and rotated to the inner wall of the foldable sidewall structure, forming a continuous reflective surface when unfolded. It can withstand a 3kg weight without deformation, and its measured torsional strength reaches 280N / m², far exceeding the 150N / m² requirement of GB4706.21. The microwave oven body 1 has a control unit 7 on its side, including two rotary time switches 71, a fire control switch 72, and multiple function buttons 73. The time switch 71 adjusts different heating times, the fire control switch 72 selects the appropriate heating power, and the buttons 73 correspond to various preset heating programs, such as rapid heating, defrosting, and food heating. Operation is simple and convenient, suitable for outdoor, vehicle-mounted, and other mobile applications. The microwave oven body 1 is also equipped with a safety interlock mechanism for the folded state. A Hall sensor, model A3144, is installed at the hinge positioning point. When the foldable side wall structure is not fully unfolded, the sensor will trigger a relay to cut off the high voltage circuit, ensuring that the microwave leakage is controlled within 0.5mW / cm². A microwave transmitter is installed on the side of the microwave oven body 1 relative to the inside of the foldable side wall structure. The microwave transmitter is electrically connected to the control unit 7 and the power supply interface, and can emit microwaves to heat food under the command of the control unit 7. Understandably, in another embodiment, the folding telescopic part may be a corrugated cylinder 2 with the opening facing upward, and the corrugated cylinder 2 may be folded and telescopic in the vertical direction.

[0026] It is understood that the shape of the microwave oven body 1 is not limited. For example, in one embodiment, the shape of the microwave oven body 1 is a corrugated cylinder 2 that is folded and retractable in a central fan shape.

[0027] In operation, the user can unscrew the handle 9 from the slot 8 and carry the microwave oven to the desired location. Then, the corrugated cylinder 2 is pulled open to extend to the appropriate length. At this time, the first folding rod 61 and the second folding rod 62 of the folding part 6 unfold into a straight line, providing support and reinforcement for the corrugated cylinder 2. The placement plate 10 unfolds synchronously into a horizontal position under the action of the rotating hinge 11. The door 4 is opened, and a plate containing food is placed steadily on the placement plate 10. After closing the door 4, the latches 5 on both sides of the door frame 3 are rotated to engage with the latches 5 slots on the door 4, thus fixing the door 4 and sealing the internal space of the corrugated cylinder 2. The plug is connected to the mains power grid. The desired heating time is set via the timer switch 71 of the control unit 7, and the appropriate heating power is selected via the fire control switch 72. Alternatively, the button 73 corresponding to the preset heating program can be pressed directly. After receiving the operation command, the control unit 7 starts the microwave transmitter. The microwaves emitted by the microwave transmitter act on the food within the sealed corrugated cylinder 2, causing the water molecules in the food to vibrate rapidly and generate heat, thus heating the food. After heating is complete, the control unit 7 automatically cuts off the power to the microwave transmitter. The user can then turn the latch 5 to open the door 4 and remove the heated food. When not in use, pressing the corrugated cylinder 2 compresses it, causing the placement plate 10 to fold along with the corrugated cylinder 2. The first folding rod 61 and the second folding rod 62 also fold and fit snugly against the side of the microwave oven body 1. The handle 9 is then retracted into the slot 8 for easy carrying and storage.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may utilize the disclosed technical content to make changes or modifications to create equivalent embodiments applicable to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, still fall within the protection scope of the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood through specific circumstances.

Claims

1. A portable microwave oven comprising a microwave oven main body (1), characterized in that: The surface of the microwave oven body (1) is provided with a control part (7), and the microwave oven body (1) is provided with a folding telescopic part, wherein the folding telescopic part can be pulled out and stretched when used, and the folding telescopic part can be pressed and folded in the storage state, and a door frame (3) is installed on one side of the folding telescopic part, and a door body (4) is rotatably installed on the door frame port.

2. The portable microwave oven as claimed in claim 1, wherein: The folding telescopic part is a corrugated cylinder (2) with an opening facing upward, and the corrugated cylinder (2) can be folded and telescoped in the vertical direction.

3. The portable microwave oven as claimed in claim 1, wherein: The folding telescopic part is a corrugated cylinder (2) that can be folded and telescoped in a circular sector around the microwave oven body (1).

4. The portable microwave oven as claimed in claim 1, wherein: The folding telescopic part is a corrugated cylinder (2) that can be folded and telescoped in the horizontal direction, wherein the two ends of the corrugated cylinder (2) are fixed between the microwave oven body (1) and the door frame (3), and when not in use, the corrugated cylinder (2) can be pressed to compress the space for convenient carrying, and when in use, the corrugated cylinder (2) can be pulled out to stretch it for food placement.

5. The portable microwave oven according to any one of claims 2 to 4, characterized by: The corrugated cylinder (2) is a double-layer metal mesh to prevent microwave leakage.

6. The portable microwave oven as claimed in claim 4, wherein: The door frame (3) is rotatably provided with a buckle (5), and when the door body (4) is covered on the door frame (3), the buckle (5) can be buckled on the door body (4) to fix the door body (4) and seal the space inside the corrugated cylinder (2).

7. The portable microwave oven as claimed in claim 6, wherein: The upper end of the microwave oven body (1) is provided with a clamping groove (8), and a handle (9) is installed in the clamping groove (8), so that the microwave oven body (1) can be carried by the handle (9).

8. The portable microwave oven as claimed in claim 7, wherein: The microwave oven body (1) and the door frame (3) are provided with a folding part (6), and the folding part (6) can reinforce the corrugated cylinder (2).

9. The portable microwave oven as claimed in claim 8, wherein: The folding part (6) includes a first folding rod (61) and a second folding rod (62), the first folding rod (61) is rotatably connected between the microwave oven body (1), the second folding rod (62) is rotatably connected between the door frame (3), and a rotating groove (63) is formed on one side of the first folding rod (61) and the second folding rod (62) that are close to each other, and the first folding rod (61) and the second folding rod (62) are connected by the rotating groove (63).

10. The portable microwave oven as claimed in claim 9, wherein: The inside of the corrugated cylinder (2) is provided with a placing plate (10), wherein the placing plate (10) can place food plates, and the placing plate (10) can be folded and compressed with the corrugated cylinder (2), two placing plates (10) are rotatably connected by a rotating hinge (11), and the placing plate (10) is rotatably connected with the corrugated cylinder (2).

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