24 results about "Microwave shielding" patented technology

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 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 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.

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.

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 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 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 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.

The utility model relates to the technical field of UV curing, and discloses a microwave shielding net which comprises a square frame, a strip-shaped shielding net is arranged at the bottom of the square frame in an attached mode, positioning plates are fixedly connected to the front side and the rear side of the strip-shaped shielding net, and the upper surfaces of the positioning plates make contact with the bottom of the square frame. A positioning hole is formed in the positioning plate, and a positioning block is arranged on the inner wall of the positioning hole in an attached mode. Through cooperation of the positioning plate, the positioning holes, the positioning blocks, the grooves, the guide columns, the pressing supports, the first springs and the second U-shaped plate, the strip-shaped shielding nets and the square frame can be directly disassembled and assembled, meanwhile, the microwave shielding net is formed by combining a plurality of strip-shaped shielding nets, and therefore when the microwave shielding net is damaged, the microwave shielding net can not be damaged. The microwave shielding net can be continuously used by replacing the damaged strip-shaped shielding net, so that the maintenance cost of the microwave shielding net is reduced.

The invention relates to a door body structure, microwave cooking equipment and a microwave shielding regulation and control method, which can realize dynamic balance among microwave shielding property, furnace chamber visibility and safety and improve the use experience of a user. The door body structure comprises: a door main body having an observation window; the first metal screen plate is fixedly arranged on the door main body and covers the observation window; the second metal screen plate is stacked on the first metal screen plate at intervals, and meshes of the second metal screen plate and meshes of the first metal screen plate can be arranged in a staggered mode.

The present invention provides an on-line instant drying device and method for 3D printing consumables based on microwave, belonging to the technical field of 3D printing. The device includes a microwave shielding resonant cavity, a microwave source, a PTFE microwave transparent catheter, a hot air blower, an infrared temperature measuring probe, a PID controller and an exhaust hole; microwave chokes and cutoff waveguides are provided at the inlet and outlet of the resonant cavity, and the catheter forms a folded-back structure in the cavity, and the consumables pass through the resonant heating area multiple times; the microwave source emits microwaves of 0.3 GHz to 300 GHz to achieve volume heating, and is combined with hot air scavenging and moisture removal. The infrared temperature measurement and the PID controller constitute a high-precision closed-loop temperature control, which can be compatible with the linkage expansion of solid-state microwave sources and humidity sensors. The beneficial effects of the present invention: Abandoning the off-line baking of the whole roll and adopting on-line flow instant drying, solving the contradiction between the standing wave in the microwave cavity and the space utilization rate, achieving second-level dehydration, plug-and-play, high efficiency and energy saving, and avoiding the thermal aging of the consumables, with microwave leakage protection, applicable to the on-line drying of FDM 3D printing engineering consumables such as PA nylon, PC, and TPU.

The invention discloses a shiny-leaved yellowhorn full-automatic husking and oil pressing all-in-one machine which comprises a shell breaking and seed taking area, a shell removing and oil pressing area and a shell removing and oil pressing area. The cleaning water control assembly, the microwave baking assembly and the winnowing assembly are sequentially arranged in the machine body from top to bottom, and the cleaning water control assembly comprises a bin body I; a pair of roller conveyor belts; a pair of gear motors I; a pair of stirring rolling brushes; a pair of gear motors II; a water tank; a pair of water supply lines; two groups of water mist nozzles; a pair of heating plates; an infrared moisture detector; a microwave shielding door I and a microwave shielding door II; a microwave conveyor belt; a microwave emitter; a dehumidifying pipeline; a differential roller track I; the winnowing assembly comprises a bin body III; a guide ramp; a double-layer fan; an improved seed storage tank and a waste tank; a screw conveyor; a differential double-roller track II; and an oil pressing area. The full-automatic shiny-leaved yellowhorn husking and oil squeezing all-in-one machine integrates husking, grain stripping and efficient squeezing, and the seed taking efficiency, the seed taking rate and the squeezing rate can be effectively improved.

The invention relates to the technical field of manufacturing of glass for household appliances, in particular to coated glass for a microwave oven door, a preparation method and the microwave oven door. The coated glass comprises a glass substrate and a coating layer arranged on one side of the glass substrate, the coating layer comprises a five-layer structure, and the five-layer structure sequentially comprises a first silicon nitride dielectric layer, a first silicon oxide protective layer, an indium tin oxide functional layer, a second silicon oxide protective layer and a second silicon nitride dielectric layer from the glass substrate to the outside; the thickness of each layer is designed in a targeted manner, so that the high visible light transmittance is realized on the single piece of glass successfully and simultaneously, and can reach 90% or above; excellent low-radiation performance is achieved, and the radiance reaches 0.2 or below; the shielding performance of the microwave shielding material in the 2.45 GHz frequency band reaches 17 dB or above, multiple requirements of users for good visual experience, use safety, energy conservation and heat preservation can be met, meanwhile, the product structure is simplified, and the comprehensive performance is remarkably improved.

The utility model discloses a cooker body and microwave rice cooker, relates to life electric appliance technical field, the cooker body comprises a cooker main part, a support frame and a housing cover, the cooker main part is provided with a microwave shielding cavity, the microwave shielding cavity is provided with an opening, the opening is provided with a turnup, the turnup is annularly arranged on the opening, the support frame is sleeved outside the microwave shielding cavity, and the microwave shielding cavity is provided with an opening. The shell cover is arranged outside the supporting frame in a sleeving mode, and the shell cover and the supporting frame are arranged on the turned-over edge in a clamping mode. According to the technical scheme provided by the utility model, reliable fixation of the integral stretching cavity and the injection molding type shell cover is realized.