58 results about "Radiofrequency heating" patented technology

The invention provides an aerosol generation device, a heating control method thereof and a storage medium, and the heating control method comprises the steps: S1, a control assembly obtains frequency error data, and the frequency error data represents error data between the resonant frequency of a heating assembly and a target frequency; s2, performing fuzzification processing on the frequency error information by the control component to obtain a target frequency adjustment parameter; s3, the control component adjusts the resonant frequency according to the target frequency adjustment parameter to obtain a target output frequency; s4, the control assembly controls the heating assembly to conduct heating according to the target output frequency. According to the heating control method, a radio frequency heating system frequency dynamic regulation and control strategy based on real-time capacitance monitoring and fusing fuzzy control and a fast Fourier transform (FFT) algorithm is creatively applied, and the purpose is to guarantee that a heating assembly can always accurately run in the optimal resonant frequency interval, and efficient and stable heating performance is achieved.

The invention discloses a 16-in-one high-power combiner working in a radio frequency band, and belongs to the technical field of fusion radio frequency heating. The invention comprises a coaxial input hard feeder line, a radial transmission line (RTL), a gradient impedance matching coaxial line and a coaxial output hard feeder line. The physical size is designed through theoretical calculation, electromagnetic field distribution is optimized through simulation, 16 radio-frequency signal input ports are designed through radial symmetric topology, a radial transmission line serves as a main synthesis path of radio-frequency signal source power, the power input by the 16 radio-frequency signal source ports is subjected to one-step efficient synthesis in the center of the radial transmission line, and the radio-frequency signal source power is obtained. And the 50-ohm characteristic impedance standard output of the synthesized radio frequency signal power is realized through an impedance matching technology. The sixteen-in-one power combiner designed by the invention has the characteristics of high synthesis efficiency, symmetrical structure, good amplitude and phase consistency, high isolation, low return loss, low reflection loss, simple design structure, easiness in manufacturing and the like.

The invention provides a paper-based buffer material based on dry forming and radio frequency heating consolidation and a preparation method of the paper-based buffer material, and belongs to the technical field of buffer packaging materials. Paper pulp fibers, bi-component hot melting fibers and functional fibers are subjected to fiber burdening and mixing, dry forming, radio frequency heating consolidation and cooling setting, and finally the high-performance paper-based buffer material is obtained. The preparation method has the advantages of greenness, high efficiency, no water addition and low energy consumption.

The present application relates to the technical field of food heating, and discloses a radio frequency heating system with adjustable distance between positive and negative plates, which comprises a box body, a front door, a back door, a lower plate, an upper plate, a lifting mechanism and a radio frequency power supply, the lower plate is fixed to the inner bottom surface of the box body, the upper plate is arranged on the inner top of the box body above the lower plate, the lifting mechanism is fixed to the outer top of the box body and its lifting output end penetrates through the top surface of the box body and is fixed to the upper surface of the upper plate, and the radio frequency power supply is located outside the box body and electrically connected with the upper plate and the lower plate respectively. By penetrating the lifting output end of the lifting mechanism through the top surface of the box body and fixing it to the upper surface of the upper plate, the distance between the upper plate and the lower plate can be dynamically changed, the impedance value of the capacitor formed between the food to be heated and the upper plate and the lower plate in the circuit can be changed, the distance between the food to be heated and the lower surface of the upper plate can be shortened, the radio frequency heating effect can be improved, and the energy consumption can be reduced.

The invention relates to the technical field of agricultural product processing, and discloses a radio frequency heating drying device which comprises a base plate, a radio frequency heating system and a storage mechanism used for placing materials, an upper polar plate and a lower polar plate are arranged on the base plate, the radio frequency heating system is connected with the upper polar plate and the lower polar plate, and the storage mechanism is located between the upper polar plate and the lower polar plate. The storage mechanism comprises a first shell and a second shell, a storage cavity is defined by the first shell and the second shell, a clamping column is fixedly installed at the lower end of the second shell, a clamping groove matched with the clamping column is formed in the first shell, a partition plate is arranged between the first shell and the second shell, and the partition plate is fixedly installed in the storage cavity. The partition plate divides the storage cavity into an upper part and a lower part, and conical grooves are formed in the upper end and the lower end of the partition plate. The invention aims to solve the problem that when an existing radio frequency heating and drying device is used, the temperature of a barrel opening of a material barrel is still higher than that of other positions, and materials located at the barrel opening are prone to being excessively heated.

The present invention relates to a ventilation device for improving the uniformity of radio frequency heating and drying. The device adopts a dual-chamber ventilation structure with inner and outer chambers. The inner and outer chambers are each connected to a hot air blower. The two chambers correspond to the center and edge areas of a material tray above a lower electrode plate through a limiting frame, ensuring that the hot air generated by the two hot air blowers passes through the two chambers and enters the edge and center areas of the material tray respectively. During the drying process, the controller of the hot air blower automatically adjusts its heating temperature based on the temperature monitoring results of the material in the edge and center areas of the material tray, so that the temperature of the material in the edge area of ​​the material tray is the same as that of the material in the center area. The ventilation system modification cost of the present invention is low, the method is simple to operate, and it avoids excessively high temperature of the material in the edge area of ​​the material tray during the radio frequency drying process, thereby ensuring uniform drying of the material.

The beauty instrument comprises a machine body with a working face, at least two sets of electrode pairs with working frequencies gradually changed are sequentially arranged on the working face in one direction, and when beauty work is carried out, all the sets of electrode pairs are sequentially controlled to alternately and circularly work according to the sequence of the working frequencies from high to low. The beauty instrument is faster, deeper, wider and more uniform in heating. The invention further relates to a working method of the beauty instrument. The working method is characterized in that the beauty instrument is adopted; when the beautifying work is started, the electrode pair with the highest working frequency is controlled to work, then the electrode pairs are sequentially controlled to alternately and circularly work according to the sequence of the working frequencies from high to low, one electrode pair stops working after meeting the set condition, and the next electrode pair is started to work. According to the working method of the beauty instrument, quicker, more uniform and deeper radio frequency heating with a large action area can be realized. The invention further relates to a computer readable storage medium, computer instructions are stored in the computer readable storage medium, and the computer instructions are used for enabling a computer to execute the working method of the beauty instrument.

The application discloses a sun-cured tobacco distillation processing technology method, and relates to the technical field of tobacco processing, in particular to a sun-cured tobacco distillation processing technology method.The application constructs a mapping relationship between raw material dielectric fingerprints and thermal response characteristics, combines with a coplanar waveguide sensor array to collect data in real time, uses a neural network to predict the thermal release starting temperature of key aroma components, dynamically allocates radio frequency heating parameters, realizes a gradient heating process including low-frequency uniform preheating, medium-frequency selective excitation and high-frequency local focusing, and effectively improves the recovery rate of target aroma components and the retention rate of heat-sensitive components.The application has beneficial effects such as online self-adaptive regulation and control, high extraction efficiency and continuous model optimization.The application constructs a dielectric fingerprint-thermal response characteristic correlation model, realizes the regulation and control of a heating strategy driven by the inherent physical properties of raw materials, significantly improves the scientificity and accuracy of process control, automatically adapts an optimal thermal treatment path without manual intervention, and greatly improves batch consistency and target component recovery stability.

The invention relates to a power supply device for a heating device. The power supply device comprises at least two functional modules; the radiator comprises radiating fins and wall parts extending in the flowing direction of radiating airflow, the wall parts comprise a first wall part and a second wall part, and the second wall part is transverse to the first wall part when viewed in a section perpendicular to the flowing direction; wherein the inner cavity of the power supply equipment is divided into at least three air channels by the first wall part and the second wall part, and at least two of the at least three air channels are configured to be suitable for correspondingly accommodating the at least two functional modules of the power supply equipment. The invention further relates to a corresponding heating device and a refrigeration appliance. The power supply device has the advantages that heat dissipation power distribution which is as appropriate as possible can be provided in a limited space, so that different heat dissipation requirements of each module of the power supply device for the heating device, especially the radio frequency heating device, can be met.

An aerosol generating device, and a method for controlling heating of the aerosol generating device. The aerosol generating device comprises a radio frequency source, and a power supply and a radio frequency heating assembly both connected to the radio frequency source. The power supply is used for providing a direct current signal to the radio frequency source. The radio frequency source is used for converting the received direct current signal into an electromagnetic wave signal and transmitting the electromagnetic wave signal to the radio frequency heating assembly. The radio frequency heating assembly comprises a radio frequency radiator (1) in which a resonant cavity (13) is formed and a transmission connector (3) mounted on the radio frequency radiator (1). The transmission connector (3) is used for receiving the electromagnetic wave signal to cause the resonant cavity (13) to generate resonance. A coaxial accommodating cavity (131) is further formed in the resonant cavity (13). The accommodating cavity (131) is used for accommodating a medium to be heated (5). A notch (14) is formed on the radio frequency radiator (1). The notch (14) is in communication with the resonant cavity (13) and is arranged on the outer side of the accommodating cavity (131) in an annular configuration.

A vertical HVPE growth device for growing single crystal gallium nitride, comprising a cavity tube, a gas source area, a single crystal growth tray and a heating system; the gas source area is composed of a plurality of gas conduits nested, and the heating system comprises three heating devices corresponding to three temperature zones, in the order from top to bottom of the vertical HVPE device, in turn, the first heating device corresponding to the first temperature zone 800-900 DEG C, the second heating device corresponding to the second temperature zone 1400-1600 DEG C, and the third heating device corresponding to the temperature zone 1000-1100 DEG C, wherein the second heating device is a radio frequency coil. The gas conduit is composed of three parts spliced, from top to bottom, a quartz part, an insulation part and an induction part. The application can effectively inhibit the premature reaction of the gas by improving the heating system of the vertical HVPE growth device and the gas conduit, setting three specific temperature zones and controlling the temperature of the second temperature zone by radio frequency heating, and at the same time can ensure the full mixing of NH3 gas and GaCl gas in the single crystal growth tray, which is conducive to the generation of high-quality single crystal gallium nitride.

The utility model discloses a device for cooperatively treating excess sludge based on radio frequency heating and alkali, belongs to the technical field of sewage sludge treatment, and solves the problems of high medicine consumption and high energy consumption in the process of independently combining an alkali treatment process and a radio frequency heating technology in the conventional AO (Anaerobic Oxidation) process. The system comprises an AO system, wherein the AO system comprises an anoxic tank, an aerobic tank and a sedimentation tank which are communicated in sequence; a sludge outlet of the sedimentation tank is respectively communicated with a sludge discharge pipe, a sludge return pipe and an alkali liquor sludge return pipe, the sludge return pipe is communicated with the anoxic tank, the alkali liquor sludge return pipe is communicated with a water inlet of the radio frequency heating tank, and a water outlet of the radio frequency heating tank is communicated with a water inlet pipe through a disintegrated sludge return pipe. According to the device, an alkali treatment process and a radio frequency heating technology are coupled for in-situ recycling of sludge through the alkali liquor sludge return pipe and the radio frequency heating tank, the alkali chemical consumption and the radio frequency energy consumption are reduced through the cooperation of the alkali treatment process and the radio frequency heating technology, and the influence of overhigh pH on the nitrogen and phosphorus removal efficiency of the AO system is avoided due to the reduction of the alkali consumption.

This invention discloses a control method for an ion cyclotron resonance heating system, belonging to the field of radio frequency heating control technology. This invention trains a coupling impedance prediction model using ICRH system operating parameters and plasma parameters, and outputs future coupling impedance prediction results during ICRH system operation to characterize the changing trend of the coupling state between the ICRH system and the plasma. During ICRH system operation, the signals required for the coupling impedance prediction model are acquired in real time to predict the matching state of the ICRH system. When the prediction results indicate a potential mismatch in the future coupling impedance, the impedance matching module in the ICRH system is preemptively adjusted to ensure that the ICRH system is always in an optimal matching state. This solves the technical problems of adjustment lag and transient mismatch inherent in existing technologies.

The utility model discloses a radio frequency heating assembly and an aerosol generating device, and relates to the technical field of microwave heating, the radio frequency heating assembly comprises a microwave signal source, a push amplifier, a final amplifier and a heating structure, a microwave signal generated by the microwave signal source is amplified by the push amplifier and the final amplifier in sequence and is transmitted to the heating structure, and the heating structure is used for heating an object to be heated through microwaves; the microwave signal is amplified to a first preset power through the push amplifier and is amplified to a second preset power through the final amplifier, and the push amplifier and the final amplifier are discrete chips. According to the embodiment of the utility model, the heat output stability of the radio frequency heating assembly can be improved.

A radiofrequency treatment system includes a first RF heating channel part upstream of a first cooling channel part, that is upstream of a second RF heating channel part. The radiofrequency treatment system provides radiofrequency waves to the flowable food product in the RF heating channel parts and cools the flowable food product in the cooling channel part, according to a temperature distribution. A temperature of the flowable food product in a cooling channel part downstream of a RF heating channel part is lower than the temperature of the flowable food product in the RF heating channel part upstream of that cooling channel part. Also, a temperature of the flowable food product in a RF heating channel part downstream of a set of a RF heating channel part and a cooling channel part is higher than of the flowable food product in the RF heating channel part of that set.

The utility model discloses a kind of heating box of radio frequency machine, including radio frequency heating box main frame and control system, radio frequency heating box main frame inside is provided with inner box plate, inner box plate is provided with magnetron for being used to carry out radio frequency heating, interval uniform arrangement, the controlled end of magnetron is connected with the output end of control system;The outer box plate of radio frequency heating box main frame outside is provided with the outer box plate of protective effect, outer box plate top is provided with detachable roof;The inner box plate top is also provided with control power module;The utility model carries out radio frequency heating by setting magnetron of uniform distribution on inner box plate top, heating efficiency improves, greatly shorten heating time, and cooperate axial flow fan to carry out even distribution to the airflow in radio frequency heating box, ensure that radio frequency heating box in product heating process is heated evenly, improve heating efficiency.

A multi-tier rack assembly for use in an oven including a cooking chamber, a convective heating system configured to provide heated air into the cooking chamber, and a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber may include a bottom tier rack and a top tier rack. The bottom tier rack may be removable / insertable relative to the cooking chamber to be supported at a bottom wall of the cooking chamber. The bottom tier rack may include a first frame including a plurality of first frame members that surround a first grate structure. The top tier rack may be removable / insertable to be supported by the bottom tier rack. The top tier rack may include a second frame including a plurality of second frame members that surround a second grate structure. Each of the bottom tier rack and the top tier rack may define a lateral gap proximate to sidewalls of the cooking chamber and a rear gap proximate to a back wall of the cooking chamber to permit, along with the first and second grate structures, airflow vertically through, along sides, and along a back of the bottom and top tier racks, respectively.

An impedance matching method and apparatus for a radio frequency heating smoking set, and an electronic device. The method comprises: when it is detected that a target cigarette is inserted, acquiring parameter information of a radio frequency power supply; controlling the radio frequency power supply to transmit a preset measurement current to electrode plates, calculating, on the basis of the parameter information, measurement working power corresponding to the preset measurement current, and determining, on the basis of the measurement working power, load impedance of the target cigarette; and when the load impedance is not matched with power supply impedance of the radio frequency power supply, generating, on the basis of the load impedance, adjustment information used for adjusting an alternating current frequency of the radio frequency power supply until the load impedance is matched with the power supply impedance. According to the present invention, after the target cigarette is inserted into the smoking set, the specific load impedance of the target cigarette is calculated and determined according to the measurement working power between the electrode plates, and then the load impedance is adjusted by adjusting the alternating current frequency of the radio frequency power supply, so that the load impedance is matched with the power impedance, and the optimal power use efficiency is achieved.

The application discloses a movable multi-source radio frequency treatment device and a temperature control method thereof, and relates to the field of radio frequency treatment technology, and comprises a device shell, two steering gears are arranged in the device shell, a small radio frequency heating source is connected to one steering gear, a temperature measuring module is connected to the small radio frequency heating source, one steering gear controls the radio frequency heating source and the temperature measuring module, and the other steering gear controls the overall rotation, the application adds a scanning link before temperature control, calculates the average temperature of the whole area for the next operation, uses a multi-stage temperature regulation mode when regulating the temperature, the target temperature of PID control is not the set temperature value, but the temperature positively correlated with the current temperature, adopts a closed-loop control algorithm to realize automatic control and reduce labor cost, and the multi-stage temperature regulation mode makes the temperature of the control area more balanced.

In an embodiment, the present disclosure pertains to a method of direct ink writing (DIW). In general, the method includes extruding a resin from a print head, applying radio frequency (RF) heating to the resin, and inducing partial curing of the extruded resin layer-by-layer to thereby form a self-supporting structure. In an additional embodiment, the present disclosure pertains to a system for DIW. In some embodiments, the system includes a print head operable to extrude a resin from a nozzle and an RF applicator.

An embodiment in accordance with the present invention provides a catheter solution that would maintain MRI-compatible metallic braiding or metallic covering on a surface of the catheter, and that also prevents cables disposed in an interior lumen of the catheter from effectively propagating currents induced from external signal transmissions, which could cause a rise in temperature of the cables themselves and of tissues surrounding the catheter. The present invention uses metals which are non-ferromagnetic and not highly paramagnetic, so they do not cause large susceptibility artifacts in the MRI field. The construction of the braid prevents most of the RF fields from penetrating into the anterior of the catheter. Therefore, there is no need or a reduced need to add heat amelioration components to each electrical cable inside the catheter.

The application belongs to the technical field of oil and gas development, and discloses a downhole radio frequency heating device and method. The downhole radio frequency heating device comprises a radio frequency antenna, a heating control short section, a frequency modulation module and an oil production rate measuring instrument. The radio frequency antenna is placed in the wellbore of the reservoir area through the oil pipe and radiates electromagnetic waves outward to heat oil and gas. The heating control short section is arranged at the top of the radio frequency antenna and is electrically connected with the radio frequency antenna. The heating control short section is used for adjusting the working voltage of the radio frequency antenna. The frequency modulation module is connected between the ground power supply and the heating control short section, and is used for adjusting the frequency of the output current of the ground power supply to the heating frequency of the radio frequency antenna. The oil production rate measuring instrument is arranged at the top of the oil pipe and is used for measuring the oil production rate in real time. The application adopts the downhole radio frequency antenna heating mode for thermal recovery, solves the problem of excessive heating in a short distance or insufficient heating in a long distance existing in the radio frequency heating, and is beneficial to improving the thermal recovery efficiency.

The invention relates to a temperature measurement and control system for radio frequency heating treatment in a bladder cavity, which comprises a radio frequency output electrode, a temperature measurement probe, a radio frequency output negative plate, a radio frequency generation device, a radio frequency power acquisition device, a temperature acquisition device, a control system, a computer and a touch display, the radio frequency output electrode is connected with the radio frequency generating device, the temperature measuring probe is connected with the radio frequency output electrode, the radio frequency power collecting device is connected with the radio frequency output electrode, the radio frequency power collecting device is connected with the control system, the temperature collecting device is connected with the temperature measuring probe, the temperature collecting device is connected with the control system, and the control system is connected with the computer. And the radio frequency output negative plate is connected with the radio frequency generator. According to the temperature measurement and control system, heat is generated near the radio frequency output electrode to heat liquid around the electrode; the temperature of liquid in the bladder cavity is monitored in real time through the temperature measuring probe, and normal saline added with chemotherapy in the bladder cavity is heated to 43-45 DEG C for thermal chemotherapy.

The invention provides an aerosol generating device and a heating control method of the aerosol generating device. The aerosol generating device comprises a radio frequency source, a power supply and a radio frequency heating assembly, wherein the power supply and the radio frequency heating assembly are connected to the radio frequency source. The radio frequency source is used for converting a received direct current signal into an electromagnetic wave signal and transmitting the electromagnetic wave signal to the radio frequency heating assembly; the radio frequency heating assembly comprises a radio frequency radiator with a resonant cavity and a transmission joint mounted on the radio frequency radiator, and the transmission joint is used for receiving an electromagnetic wave signal to enable the resonant cavity to generate resonance; a coaxial containing cavity is further arranged in the resonant cavity and used for containing a heated medium. The radio frequency radiator is provided with a gap, and the gap is communicated with the resonant cavity and surrounds the outer side of the accommodating cavity. According to the aerosol generating device, through the arrangement of the resonant cavity structure and the notch, the electromagnetic field can be better restrained in the radio frequency radiator, then the heated medium part is heated in a centralized mode, and the heat production efficiency is high.

The utility model discloses a product processing forming is with radio frequency machine, including radio frequency heating box, vacuum tank, silica gel membrane seal frame, control system, silica gel membrane seal frame sets up between radio frequency heating box and vacuum tank, be provided with the first drive module and the second drive module of drive silica gel membrane seal frame overturn in vacuum tank, control system is established in vacuum tank, and the controlled end of radio frequency heating box, vacuum tank, first drive module, second drive module is connected with the output of control system respectively, the utility model discloses the cooperation of radio frequency heating box, silica gel membrane seal frame, vacuum tank by from top to bottom setting in proper order, can gather door panel press fit, wooden door and fit, edge, arc forming etc. Operation in an organic whole, realizes the integrated operation of product processing forming, further reduces the production cost of product forming equipment, improves the production efficiency of equipment.

The invention provides a coal radio frequency heating in-situ conversion hydrogen production experimental device and experimental method. The coal radio frequency heating in-situ conversion hydrogen production experimental device comprises a shaft, a pressure adjusting assembly, a reaction container, a radio frequency assembly, a gas displacement assembly, a gas collection assembly and a data acquisition assembly. The shaft penetrates through the experimental coal sample and is abutted against the inner wall of the experimental coal sample; the radio frequency assembly comprises a radio frequency antenna, and at least one part of the radio frequency antenna is arranged in the shaft; the shaft and the experimental coal sample are arranged in a pressure cavity in the reaction container; the pressure adjusting assembly is communicated with the pressure cavity; the gas collecting assembly is communicated with the pressure cavity; the gas displacement assembly communicates with the pressure cavity and drives gas in the pressure cavity to flow into the gas collection assembly. The data acquisition assembly comprises an optical fiber temperature sensor, and the optical fiber temperature sensor is arranged in the pressure cavity. The problems that existing radio frequency hydrogen production experimental equipment lacks integration of multiple experimental functions and cannot accurately simulate the underground environment can be solved.

An oven may include a cooking chamber configured to receive a first food product, a convective heating system configured to provide heated air into the cooking chamber, a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber, and processing circuitry configured to execute a recipe defining cooking parameters for cooking the first food product. The cooking parameters may define operational settings for the convective heating system and the RF heating system and a nominal cooking time for a first batch including the first food product. The processing circuitry may be operably coupled to a mass adjustment module configured to determine, based on an indication of an addition of a second batch comprising a second food product to the cooking chamber, an overlap period during which the first and second food products are simultaneously cooked and a completion time for cooking the second food product after the overlap period.

The present application relates to a kind of radio frequency heating electrode, radio frequency instrument and radio frequency therapeutic instrument, wherein, radio frequency heating electrode includes outer insulating shell, inner conductive layer and radio frequency cable;The outer insulating shell is hollow shell, and outer insulating shell is provided with wire hole;Inner conductive layer covers the inner wall of outer insulating shell;The radio frequency cable passes through wire hole and extends into outer insulating shell, and is conductively connected with the inner conductive layer;The radio frequency cable is connected with radio frequency instrument mainframe, and radio frequency voltage generated by radio frequency instrument is transmitted to the inner conductive layer;Radio frequency heating electrode is capacitively coupled to the object or object containing polar molecule wrapped the outer wall of outer insulating shell by radio frequency voltage transmitted to the inner conductive layer to generate radio frequency current, to achieve the effect of heating or treating the object or object.

The application discloses an in-situ conversion method of coal seams by radio frequency heating underground, and particularly relates to the technical field of coal seam pyrolysis conversion, and comprises the following steps: injecting a preset fluid to form a fracture network after drilling, and then injecting a preset first material to construct a filling structure with electromagnetic response characteristics; expanding the borehole and filling a preset second material to form a structure area; arranging a radio frequency heating device and a temperature monitoring device to obtain temperature change data; periodically and dynamically calculating a temperature change gradient coefficient and a temperature stable offset coefficient, generating a control parameter data combination based on the two through reasoning, and dynamically regulating and controlling a heating period and a power output in an intermittent heating mode; the application constructs a multidirectional permeation channel fracture network and a differential electromagnetic response structure, optimizes a radio frequency energy coupling path, improves the heating uniformity and conversion efficiency of coal seams, introduces a dynamic coefficient reasoning mechanism based on temperature data, realizes intelligent regulation and control of the intermittent heating period and power, and enhances the safety and adaptability of the system.