41 results about "Microwave shielding" patented technology

A cooking appliance for cooking food has a cooking chamber (14), at least one infrared emitter (28) for heating food arranged in the cooking chamber (14), and a microwave source for supplying microwaves to the cooking chamber (14). The cooking appliance has a reflector with at least one reflector tube (34) that directs infrared rays (42) from the infrared emitter (28). The reflector tube (34) is dimensioned such that it acts as a microwave shield for the infrared emitter (28).

The purpose of the present disclosure is to provide a device in which a microwave-blocking container is provided inside a vacuum container, and which makes it possible to more easily and more definitively block microwaves. A device according to the present disclosure is equipped with a housing, a vacuum container provided inside the housing, and a microwave-blocking container which accommodates an object to be treated and is provided inside the vacuum container, and is characterized in that the microwave-blocking container has a microwave radiation part and an opening which blocks microwaves and allows a gas inside the microwave-blocking container to flow into the vacuum container.

This utility model provides a vehicle-mounted microwave oven, including a shell and a door assembly. The door assembly is movably connected to the shell via a door hinge. The door assembly includes a door / window panel, a door frame, a door body, and a shield arranged sequentially from left to right. The door body has U-shaped folds arranged at intervals along its edges. The door body also has ear plates located between adjacent U-shaped folds. The ear plates are used to fix the door frame. The minimum distance between the ear plates and the door / window panel is A, and the minimum distance between the U-shaped folds and the door / window panel is B, where A < B. The vehicle-mounted microwave oven of this application allows the door body and the shield to fit tightly together, reducing the thickness of the door body and thus reducing the overall volume of the microwave oven, reducing space occupation, and facilitating microwave oven installation. The U-shaped folds arranged at intervals along the edge of the door body also have an excellent microwave shielding effect.

The invention relates to the field of photoelectric fairing materials, in particular to a multifunctional composite material for a photoelectric fairing. The multifunctional composite material for the photoelectric fairing comprises a substrate, and a microwave shielding layer, an anti-reflection layer, an infrared low-emission layer and a high-temperature protection layer which are sequentially stacked on the substrate. The multifunctional composite material for the photoelectric fairing is an advanced composite material with wide spectrum, high transmittance, low infrared emissivity and strong electromagnetic shielding performance, and can meet the requirements of photoelectric detection and electromagnetic protection of a high-speed aircraft in an extreme environment.

A camera mechanism (10) and a cooking appliance (100). The camera mechanism (10) comprises a camera assembly (14) and a protection assembly (12). The protection assembly (12) is provided on the light incident side of the camera assembly (14). The protection assembly (12) comprises a support (16) and a microwave shielding member (18). The microwave shielding member (18) is provided around the circumferential side surface of the support (16). The microwave shielding member (18) is configured to prevent microwave leakage between the support (16) and the inner wall of an opening of a cavity body (74) of a cooking cavity (72) of the cooking appliance (100).

The utility model provides a tunnel type microwave sterilization device of fermented tobacco, include: conveyer belt, is used for conveying tobacco; Resonant cavity forms multiple microwave feed openings, microwave feed opening is used for introducing microwave into resonant cavity, the conveyer belt passes through resonant cavity setting; Microwave generator has multiple magnetrons for generating microwave, multiple magnetrons are through microwave shielding pipeline and are oriented to multiple microwave feed openings. In the scheme of the utility model, microwave feed opening introduces the microwave generated by microwave generator into resonant cavity, carries out microwave sterilization treatment to the tobacco that flows through resonant cavity, utilizes the high penetration characteristic of microwave, realizes the synchronous heating of inside and outside material, through the synergistic effect of microwave thermal effect and non - thermal effect, directly destroys microorganism DNA and cell structure especially has the remarkable killing effect to the stubborn microorganism such as heat -resistant bacillus.

This invention provides an electromagnetic shielding device for a microwave transmitter, belonging to the field of microwave shielding technology. The device comprises: a microwave absorbing component that absorbs microwaves from the microwave transmitter and converts them into heat through a conductive liquid; the microwave absorbing component is connected to a heat dissipation and cooling system for heat dissipation; the microwave absorbing component includes: several conductive liquid pipes arranged regularly and tightly attached to the microwave transmitting antenna; a fixing frame for supporting the conductive liquid pipes; a water pump; and a flow pipe; the heat dissipation and cooling system includes: a liquid storage cavity and a cooling fan; the flow pipe connects the liquid storage cavity and the conductive liquid pipes, and the water pump circulates the conductive liquid between the conductive liquid pipes and the liquid storage cavity; the cooling fan is arranged on the liquid storage cavity to dissipate heat from the conductive liquid within the cavity. By absorbing microwaves from the microwave transmitter and converting them into heat through the conductive liquid, and then having the heat carried away by the cooling fan, the electromagnetic shielding effect of the microwave transmitter is achieved.

The invention discloses a door body assembly which comprises a door body, the inner surface, facing an inner container, of the door body is provided with a sunken part which extends along the edge of the door body and forms an enclosure, a plurality of layers of choke plates which are mutually spaced in the thickness direction of the door body are arranged in the space corresponding to the sunken part, and gaps are formed in the peripheries of the choke plates and the sunken part. Tooth grooves are formed in the edge of the choke plate at intervals, and choke teeth are formed in the portions, between the adjacent tooth grooves, of the choke plate; the space corresponding to the concave part is located between the two adjacent choke plates, a plurality of choke grooves which are mutually spaced in the thickness direction of the door body are formed between the bottom of the concave part and the choke plate closest to the concave part, and the depth of each choke groove from the inner periphery to the outer periphery is matched with the wavelength of the corresponding microwave; each choke slot is adapted to shield a corresponding microwave. The invention further discloses cooking equipment. The microwave shielding device has the beneficial effect of being capable of efficiently shielding microwaves with various frequencies.

The application discloses a cover assembly and a microwave cooking appliance applying the same, and relates to the technical field of kitchen appliances. The cover assembly comprises an inner cover and a microwave shielding door. The microwave shielding door is elastically connected with the inner cover through an elastic element. One side of the microwave shielding door, which is opposite to the inner cover, is provided with a closed end face. The closed end face is used for abutting against the pot body assembly, so that the microwave cavity can be closed. The elastic force direction of the elastic element is arranged at an angle with the plane where the closed end face is located. The microwave shielding door further comprises a choke structure, which is used for eliminating the microwave escaping from the gap between the microwave shielding door and the pot body assembly. The technical scheme provided by the application aims to reduce the gap between the cover assembly and the pot body assembly, improve the airtightness between the cover assembly and the pot body assembly, and avoid microwave leakage.

The utility model relates to the technical field of household appliances, and provides a microwave shielding cover of a microwave cooking utensil and the microwave cooking utensil. The microwave shielding cover of the microwave cooking utensil comprises an outer cover suitable for covering a cooking body of the microwave cooking utensil, and a steam outlet is formed in the outer cover; the shielding cover body is fixed to the side, facing the cooking body, of the outer cover and is suitable for being enclosed with a shielding cover on the cooking body to form a shielding cavity, the shielding cover body is provided with a first through hole, a shielding plate made of a food-grade material is arranged corresponding to the first through hole in a sealing mode, an exhaust hole is formed in the shielding plate, and the exhaust hole is in fluid communication with the steam outlet; the movable cover body is installed on at least one of the outer cover and the shielding cover body, the movable cover body and the inner container of the cooking body are suitable for being enclosed to form a cooking cavity, the movable cover body and the inner container are located in the shielding cavity, and the movable cover body is provided with a second through hole; and the steam valve is arranged between the shielding cover body and the movable cover body and is suitable for connecting or disconnecting the second through hole and the exhaust hole.

This invention discloses a high-power microwave shielding composite material and its preparation method. The composite material includes a CNT composite layer and an MXene composite layer, which are stacked together. The CNT composite layer is composed of a mixture of modified MVQ and modified CNTs, with the modification of MVQ and CNTs used to achieve uniform dispersion of CNTs in MVQ. The MXene composite layer is composed of a mixture of modified MVQ and modified MXene, with the modification of MVQ and MXene used to achieve uniform dispersion of MXene in MVQ. The preparation method modifies CNTs, MVQ, and MXene to ensure good dispersion of both CNTs and MXene in MVQ, thereby preparing the stacked CNT and MXene composite layers. This results in superior HPM shielding performance, reduced overall filler loading, and decreased surface DC conductivity.

The utility model provides an inner container assembly and cooking equipment, relates to the technical field of kitchen appliances, and is used for solving the technical problem that steam or microwaves at the installation position of a temperature sensor are prone to leakage. The inner container assembly comprises an inner container, a fixing piece, a temperature detection piece and a microwave shielding piece, and an installation hole is formed in the side wall of the inner container; the temperature detection piece is fixedly arranged on the fixing piece and partially extends into the inner container through the mounting hole, and the temperature detection piece is connected with the side wall of the inner container in a sealed mode so as to prevent steam leakage; besides, the microwave shielding piece is arranged on the periphery of the temperature detection piece and the mounting hole in a surrounding mode, the end face of one end of the microwave shielding piece abuts against the outer side wall face of the inner container, and the end face of the other end of the microwave shielding piece abuts against the surface of the fixing piece, so that the microwave shielding piece is connected with the corresponding part of the temperature detection piece, the part of the outer wall face of the inner container and the part of the surface of the fixing piece. And a closed space for preventing microwaves in the cooking cavity from leaking is defined by the two parts together, so that the microwaves in the cooking cavity are prevented from leaking.

The utility model discloses sterilization equipment for processing oat drinks, which comprises a tunnel microwave sterilization machine and a tray, a buffer mechanism and a cooling mechanism are arranged on the tunnel microwave sterilization machine, the tunnel microwave sterilization machine comprises a machine shell, a microwave generator, a microwave shielding device and a conveying belt, the microwave generator and the microwave shielding device are fixedly arranged in the machine shell, and the tray is arranged on the machine shell. The conveyor belt is installed on the machine shell, the buffering mechanism is installed on the machine shell and comprises a buffering plate, a spring and a vertical plate, the buffering plate and the vertical plate are elastically and slidably connected through the spring, the buffering mechanism is located at the tail end of the conveyor belt, and the cooling mechanism comprises a water storage tank, a submersible pump and an atomizing nozzle. The packaging bottle has the advantages of buffering, damping and rapid cooling, and solves the problems that the packaging bottle is damaged due to tray collision and the carrying is influenced due to over-high temperature of the protective edge.

MPCVD device comprises deposition platform, substrate platform, lifting platform, microwave quartz window, upper cover plate, baseplate, pressure sensors, composite windows, thickness measuring device, visual device, temperature measuring device, plasma diagnostic device, vacuum sealing ring and microwave shielding sealing ring. Reaction cavity is formed by upper cover plate and baseplate, and inlet hole is arranged on top of upper cover plate, while exhaust hole is arranged on baseplate; microwave quartz window is annular shaped and arranged between deposition platform and baseplate, and reaction cavity is isolated from air outside by microwave quartz window; lifting platform is provided with vacuum channel and cooling channel therein; vacuum cavity, which is communicated with vacuum channel, is formed by lower surface of substrate platform and upper surface of lifting platform; and pressure sensor for monitoring gas pressure is arranged in vacuum cavity.

The embodiment of the utility model provides a cooking device. The cooking device comprises a shell and a heating assembly. The shell is provided with a cooking cavity, the cavity wall of the cooking cavity comprises a first wall part and a second wall part, the first wall part is provided with a first through hole, and the second wall part is provided with a second through hole. The heating assembly is arranged in the cooking cavity and comprises a heating piece and a microwave shielding tube shell, the heating piece comprises a first wiring end and a second wiring end, the first wiring end penetrates through the first through hole, the second wiring end penetrates through the second through hole, the microwave shielding tube shell is arranged on the periphery of the heating piece in a sleeving mode, and a conductive path is established between the microwave shielding tube shell and the cavity wall. The microwave shielding tube shell is used for isolating the heating piece from microwaves in the cooking cavity, the heating effect of the microwaves in the cooking cavity on the heating piece can be effectively reduced, and therefore the sparking phenomenon is reduced. A conductive path is established between the microwave shielding tube shell and the cavity wall, so that the microwave shielding tube shell and the cavity wall form a conductor, and the possibility that the microwave shielding tube shell radiates microwaves outwards from the first through hole or the second through hole is reduced.

This invention provides a microwave shielding device and a microwave assembly. The device includes: a metal frame, and at least one metal isolation wall disposed inside the metal frame. The metal isolation wall divides the interior of the metal frame into multiple non-communicating regions. The metal frame and the metal isolation wall are detachably connected. A first metal shielding cover is provided at one end of the metal frame facing the opening direction. The metal frame and the first metal shielding cover are detachably connected. The metal frame, the metal isolation wall, and the first metal shielding cover constitute multiple open cavity bodies. This invention can form multiple non-communicating isolated regions through the metal frame and at least one metal isolation wall. The metal isolation wall is a detachable structure. The microwave shielding device can be used to assemble microwave assemblies. During the later debugging of the microwave assembly, debugging can be achieved by disassembling and assembling the metal isolation wall, making it suitable for the later debugging of microwave assemblies.

An electrically conductive composite powder is provided for microwave shielding applications. The electrically conductive composite powder has a density of 5 g / cm 3 and an intermediate layer covering the particle core, the intermediate layer having a dielectric constant of 5.90×10 at 20° C. -8 The conductive composite powder has a high electrical conductivity exceeding ohm·m, and further includes an outer layer deposited on the intermediate layer, the outer layer comprising a material with high oxidation and corrosion resistance, exhibiting a galvanic potential in seawater of greater than -0.2 V as measured by ASTM G82. This conductive composite powder exhibits excellent microwave shielding performance and is substantially less expensive than conventional Ag / Ni shields. The conductive composite powder can be used over a wide microwave frequency range.

The application discloses a kind of photovoltaic PCB solder mask ink microwave baking device, including microwave baking cavity, adjustable power microwave generator, multipoint temperature sensor, microwave homogenizer, multilayer anti-static storage rack, microwave shielding device, exhaust cooling system and intelligent control module, the photovoltaic PCB solder mask ink microwave baking device, without complex hot air circulation system, equipment energy consumption compared with traditional oven reduces 40% or so, saves production energy consumption cost;Baking process does not need hot air preheating, start-up can be put into use, and segmented power control can adapt to the baking needs of different specifications PCB board, different thickness solder mask ink, strong universality;While the device is equipped with microwave shielding and exhaust protection structure, operation is safe and reliable, without changing the overall process layout of PCB solder mask process, only replacing baking equipment, easy to interface with existing production line, without substantially modifying production line.

The application discloses a kind of multistage circulating rubber devolatilization device and method based on microwave-infrared coupling heating, belong to high polymer material processing technical field.The device includes quartz glass jar body, metal microwave shielding cavity, microwave generator, infrared lamp tube, multistage drop bar distributor and bottom direct connection screw pump.The application utilizes microwave volume heating to directly heat rubber melt, supplemented by infrared radiation to compensate surface temperature drop, avoid the rubber thermal crosslinking coking caused by traditional wall heating.The device uses intermittent circulation process, by switching coarse hole, medium hole and micropore distributor online, cooperate with the gradient regulation of vacuum degree and temperature, make rubber solution form drop bar matching its rheological property in different devolatilization stage.Bottom wide-neck screw pump realizes zero liquid holdup direct discharge, eliminate flow dead angle.The application effectively realizes the efficient, mild devolatilization of high viscosity heat-sensitive synthetic rubber, and the final volatile content can be stably controlled below 500ppm, and the product does not occur obvious thermal crosslinking.

The invention relates to the technical field of microwave drying, and provides bamboo wood rapid microwave drying equipment which comprises an equipment body, a microwave heating device, a material conveying device, an exhaust device and a microwave shielding device. A horizontal cavity is formed in the equipment main body, a discharge port and a feed port are respectively formed in two sides of the equipment main body, and the microwave shielding device is arranged at the discharge port and the feed port to provide microwave shielding; the material conveying device penetrates through the feeding hole, the horizontal cavity and the discharging hole and is used for conveying materials; the microwave heating device is mounted outside the equipment main body, the heating end of the microwave heating device is located in the horizontal cavity, and microwave heating of materials is provided; and the exhaust device is mounted on the equipment main body and is used for discharging steam generated after the materials are heated. The bamboo drying device has the effect of rapidly drying the bamboo.

The invention discloses a preparation method of composite hollow microspheres, the composite hollow microspheres prepared by the preparation method and application of the composite hollow microspheres. The preparation method comprises the following steps: dissolving a soluble salt of a first metal, a soluble salt of a second metal and an organic auxiliary agent in water, and uniformly mixing to obtain a reaction solution; mixing hollow glass microspheres with the reaction liquid, and performing sol-gel coating to obtain a first intermediate; sequentially carrying out co-pyrolysis and selective reduction on the first intermediate to obtain the composite hollow microspheres, wherein in the soluble salt of the first metal, the first metal is selected from one or more of zinc, aluminum and manganese; in the soluble salt of the second metal, the second metal is selected from one or more of copper, silver, iron, cobalt and nickel. By means of the method, the composite hollow microspheres which are light in weight, stable in structure and good in microwave shielding or absorbing function can be rapidly and efficiently prepared.

The present invention relates to a novel microwave-shielding coated glass which can prevent leakage of electromagnetic waves such as microwaves and ensure visibility of a front glass formed on a home appliance door and which is manufactured by a relatively simple method. The microwave-shielding coated glass of the present invention comprises a laminate structure in which transparent conductive oxide (TCO) layers and metal layers are alternately laminated, and has a microwave shielding performance of less than -35 dB.

The invention discloses a multistage circulating rubber devolatilization device and method based on microwave-infrared coupling heating, and belongs to the technical field of high polymer material processing. The device comprises a quartz glass tank body, a metal microwave shielding cavity, a microwave generator, an infrared lamp tube, a multi-stage falling strip distributor and a bottom direct connection screw pump. According to the method, the rubber melt is directly heated by microwave volume heating, and surface temperature drop is compensated by infrared radiation, so that rubber thermal crosslinking coking caused by traditional wall surface heating is avoided. According to the device, an intermittent circulation process is adopted, and a rubber solution forms falling strips matched with rheological properties of the rubber solution in different devolatilization stages through on-line switching of thick-hole, middle-hole and micro-hole distributors and matching of gradient regulation and control of vacuum degree and temperature. And the wide-mouth screw pump at the bottom realizes zero liquid holding direct discharge and eliminates flowing dead angles. According to the method, efficient and mild devolatilization of the high-viscosity heat-sensitive synthetic rubber is effectively achieved, the final volatile component content can be stably controlled to be 500 ppm or below, and obvious thermal crosslinking does not occur to the product.

The present application relates to the field of photoelectric fairing material, and particularly relates to a multifunctional composite material for photoelectric fairing. The multifunctional composite material for photoelectric fairing comprises a substrate and a microwave shielding layer, an antireflection layer, an infrared low-emissivity layer and a high-temperature protection layer which are sequentially stacked on the substrate. The multifunctional composite material for photoelectric fairing is an advanced composite material with wide spectrum, high transmittance, low infrared emissivity and strong electromagnetic shielding performance, and can meet the requirements of photoelectric detection and electromagnetic protection of high-speed aircraft in extreme environments.

The application discloses a kind of free opening and closing microwave concrete crushing equipment and crushing method, belong to microwave crushing solid waste recycling technical field.Equipment includes main body, transmission heating device, microwave reflection curtain, microwave absorption curtain, microwave shielding curtain and heat preservation device;Microwave shielding curtain is set in the cavity of main body both ends;Microwave absorption curtain and microwave reflection curtain are sequentially symmetrically set along the two ends of main body to central axis;Transmission heating device is set in the bottom of main body;Transmission heating device includes nested material conveying belt and microwave heating device;Heat preservation device is set in the outside of main body corresponding to microwave crushing area, microwave reflection area and microwave absorption area;Heat preservation device includes built-in flow guide pipe and external flow guide pipe which are interconnected to form a loop;Built-in flow guide pipe is set inside microwave absorption curtain, and external flow guide pipe is set on the outer surface of main body.

The invention discloses a lunar soil microwave heating cavity suitable for a movable mechanism. The lunar soil microwave heating cavity comprises a lunar soil cavity, a power feed-in waveguide, a non-contact flange, a microwave shielding metamaterial, a microwave source power output waveguide, a lunar soil cavity upper cover plate, an upper cover plate mechanical control arm and the like. One end of the microwave source power output waveguide inputs microwave power, and the other end of the microwave source power output waveguide transmits microwave power for lunar soil heating and sintering to the power feed-in waveguide through the non-contact flange, so that independent operation of the power input port and the heating and sintering cavity is realized. A microwave shielding metamaterial structure is arranged at the position of a cover plate of a heating sintering cavity, so that microwave energy in a gap between the cover plate of the heating cavity and the top surface of the heating cavity is prevented from leaking, the multi-mode high-Q-value working characteristic of the heating cavity is supported, and efficient heating of lunar soil is achieved. The device is suitable for microwave heating application of multiple frequency bands, is small in occupied volume size, can effectively guarantee the utilization rate of microwave heating power, and is suitable for carrying application of the lunar probe.

The invention provides a cooking utensil, and relates to the technical field of kitchen appliances. The cooking utensil comprises a box body, a microwave module, a function module, a shielding part and a sealing structure, the box body is provided with a cooking cavity, the microwave module is arranged in the box body, the function module comprises a function part and a support, and the support is arranged outside the cooking cavity and connected with the box body; a through hole is formed in the cavity wall of the cooking cavity; the shielding piece is abutted between the bracket and the outer wall of the cooking cavity, and the shielding piece is arranged around the through hole; the sealing structure is pressed between the support and the outer wall of the cooking cavity and comprises a first sealing part and a second sealing part, the first sealing part is located on the inner side of the shielding piece and surrounds the through hole, and the second sealing part is annularly arranged on the outer side of the shielding piece; according to the sealing structure, the two different sealing parts are compressed on the inner side and the outer side of the shielding piece respectively to form double-layer sealing, and the effect of preventing steam leakage is better achieved while the good microwave shielding effect is guaranteed.

The invention relates to the technical field of chain wheel machining, and discloses a green body drilling device for a chain wheel and a powder removing method.The green body drilling device comprises a bottom frame, a microwave shielding box is connected to the top end of the bottom frame, a wire mesh shielding glass door is connected to one side of the microwave shielding box, and two sets of transverse electric guide rails are connected to the top end of the microwave shielding box; and the moving end of the transverse electric guide rail is connected with a longitudinal electric guide rail. According to the method, a high-strength annular reinforced shell is scanned and sintered in the green body through microwave pulses, then loose materials in the shell are accurately corroded and removed through supersonic speed dry ice jet flow, high-precision holes are formed, the method is extremely low in energy consumption, cutter abrasion is avoided, machining and powder removing are synchronously completed, powder is efficiently recycled, the whole process is automatic and runs in a closed mode, and the efficiency is high. And efficient, high-quality and low-cost green near-net forming manufacturing is achieved.

Disclosed is a composite comprising from about 50 wt. % to about 97 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 3 wt. % to about 15 wt. % of a carbon-based filler, wherein the carbon-based filler has a primary surface area of from about 500 to about 1000 m2 / g, wherein the composite exhibits a dielectric constant ε′ of between 5 and 30 and a dissipation loss ε″ of between 0.5 and 45, measured at frequencies between about 10 and about 120 GHz. A molded sample of the composite exhibits a percent reflected power measured in transmission mode of at least 15% when observed according to a Free Space method at frequencies from about 75 GHz to 110 GHz.

Methods for mitigating microwave crosstalk and forming a component in a superconducting integrated circuit are discussed. Mitigating microwave crosstalk involves forming a microwave shield within the superconducting integrated circuit, the superconducting integrated circuit including a microwave sensitive component. The microwave shield is formed from a base layer and one or more sides, and the footprint of the microwave sensitive component is contained within the footprint of the microwave shielding base layer, with the one or more sides extending around at least a portion of the microwave sensitive component. Forming a component involves depositing a first metal layer, depositing a dielectric layer overlying the first metal layer, the dielectric layer comprising Nb2O5 that is deposited by atomic layer deposition, and depositing a second metal layer overlying the dielectric layer.