223 results about "Ice crystals" patented technology

The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.

The invention relates to a large-size glass product with a natural ice crystal imitating effect and an industrial casting method of the large-size glass product. The product is a lead-free glass casting with the weight larger than or equal to 100 kg, dendritic crystal-shaped or snowflake-shaped devitrified phases which are formed by growing calcium fluoride as crystal nucleuses and are distributed randomly are arranged in the product, and the three-dimensional aesthetic effect imitating natural ice crystals is achieved. The method comprises the following steps: mixing lead-free glass particles with a calcium fluoride nucleating agent with a specific particle size, and filling a mixture into a special mold with a three-layer composite structure and a temperature monitoring function; and executing a four-stage programmed thermal regulation including melting homogenization, nucleation cooling, isothermal crystallization and super-slow multi-step annealing, wherein the melting and heat preservation time and the maximum thickness of the product meet the quantitative relation of t = k.H. Through systematic collaboration of materials, molds and processes, the technical problems that crystallization in large-size glass is not uniform and cracking is easily caused by thermal stress are solved, high yield and stable mass production of products of 500 kg or above are achieved, and the method is suitable for the fields of high-end buildings, art devices and decoration.

The invention discloses a freeze-dried donkey milk powder quality control method and system based on digital twinning, and relates to the technical field of data twinning. Temperature, pressure, moisture content characterization, surface spectrum and visual information of donkey milk in the freeze-drying process are obtained through a multi-mode sensor, and are input into a digital twinning engine after edge preprocessing; and a virtual freeze-drying process is constructed in real time in combination with a heat and mass transfer model and a physical property database. A data assimilation algorithm is used for carrying out inversion estimation on key states which cannot be directly measured, such as the deep water content, the ice crystal interface position and the filming risk, and the heating rate, the vacuum level and the secondary drying time are dynamically optimized based on a predictive control strategy, so that closed-loop control of the whole process is realized. The system is further provided with a confidence evaluation module, an abnormal rollback module and a post-batch self-learning module, and online correction is performed on model deviation and continuous optimization is performed on a control strategy. According to the invention, the consistency between batches of products can be improved, and intelligent and high-quality production of the freeze-dried donkey milk powder is realized.

The utility model relates to energy equipment technical field discloses a kind of dynamic ice systems of ice blocking prevention and maintaining outlet temperature, including ice storage tank, ice storage tank inner wall is sequentially fixedly connected with ice slurry conveying branch pipe, stirring rod, semi-permeable membrane from top to bottom, the top of the ice slurry conveying branch pipe is fixedly connected with multiple ice slurry conveying spout, ice storage tank one side inside is fixedly connected with gas pipe, the one end of gas pipe is fixedly connected with air pump, air pump is located the outer side wall of ice storage tank, air pump outer wall is fixedly connected with air suction pipe and transmission shaft, the one side electric connection of air pump has monitoring line one, the one end electric connection of monitoring line one has monitoring device.In the utility model, ice crystal and water are completely separated by semi-permeable membrane, fine ice crystals entering the inlet of subcooling plate exchanger can be filtered out during ice storage, ice blocking in the plate exchanger is avoided, ice crystal filter is saved, the size of dynamic ice maker can be reduced, and the effects of preventing ice blocking and maintaining outlet temperature are achieved.

This utility model relates to the technical field of anti-clogging devices and discloses an anti-clogging device for the drain outlet of an air source heat pump. The device includes a drain pipe with a connecting circular frame on its exterior. The inner top and bottom walls of the connecting circular frame are equipped with limiting components that engage with the outside of the drain pipe. A filter plate is installed on the inner wall of the connecting circular frame. This anti-clogging device for the air source heat pump drain outlet, by incorporating a cleaning component and using a 1-mesh stainless steel filter plate, effectively traps tiny impurities such as dust particles and algae spores, preventing foreign objects from entering the drain pipe and causing blockage at the source. A miniature waterproof servo motor drives a second rotating shaft to rotate, which in turn drives a second bevel gear to rotate, causing a cleaning brush to rotate and scrape away dirt and ice crystals adhering to the filter plate surface in real time. This prevents the mesh from becoming clogged due to the accumulation of impurities, significantly improving the reliability of the anti-clogging device, enhancing its practicality, and making it easier for users to operate.

The invention provides a transparent ice block preparation control method and a refrigerator, and the method comprises the steps: responding to an ice making instruction, and controlling an ice making device to execute an ice making process; obtaining the temperature of a water body in an ice-making box in the ice-making device in the ice-making process; when the temperature of the water body enters the phase change temperature interval, a heater is controlled to execute a pulse heating control program, so that transparent ice blocks are obtained; wherein the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase change temperature sub-intervals in the phase change temperature interval, and controlling the heater to operate in a mode of repeatedly executing heating pulses for multiple times for the phase change temperature sub-intervals. According to the method, heating pulses are repeatedly executed for multiple times in a phase change temperature interval of water, the growth speed and direction of ice crystals are actively intervened, an overflow path is created for dissolved gas, the problem of ice block white turbidity is solved, and high-transparency ice blocks are prepared.

The invention relates to the technical field of fire-fighting management and control, and particularly discloses a water level detection and fire-fighting identification method and system based on automatic control, and the method comprises the steps: obtaining the temperature and acoustic multi-modal data of a fire-fighting pipe network, building a pipeline temperature gradient model, and predicting the temperature distribution of each section through combining the environment and the medium temperature; and extracting ice crystal nucleation and fluid anomaly characteristics at low temperature. Based on the temperature gradient, the acoustic spectrum, the water level fluctuation rate and historical data, a multi-parameter fusion congelation risk assessment model is constructed, and risk indexes are calculated and graded; constructing a congelation risk and firelight early warning linkage control strategy, and adaptively adjusting a firelight detector threshold value and a sampling frequency according to a risk level; when the risk reaches an early warning value, partitioned heating is implemented, a temperature recovery curve and water level stability are collected in real time as feedback, model iterative optimization and closed-loop control are achieved, early warning accuracy is improved, energy consumption is reduced, and reliable operation of a fire fighting system is guaranteed.

This invention discloses a quantitative method and apparatus for assessing the catalytic potential of silver iodide in artificial rain and snow enhancement based on cloud physics parameters, belonging to the field of atmospheric science and technology. The method includes: calculating and normalizing the total nucleation ratio of silver iodide particles to obtain a normalized nucleation conversion rate score; calculating the ice crystal potential ratio and supersaturation relaxation timescale that can effectively participate in the bergiron process after catalysis; calculating and normalizing the effective conversion time based on the ice crystal potential ratio and supersaturation relaxation timescale to obtain a normalized conversion rate score; calculating and normalizing the effective liquid water pathway to obtain a normalized liquid water content score; and weighted summing the normalized nucleation conversion rate score, normalized conversion rate score, and normalized liquid water content score to obtain a comprehensive catalytic potential score characterizing the quantitative results of the catalytic potential. This invention enables the quantitative assessment of the catalytic potential of cold clouds.

The present application provides a method for extracting ingredients of a material to be extracted in a refrigerator and the refrigerator, wherein the method for extracting ingredients of a material to be extracted in a refrigerator comprises obtaining extraction information of the material to be extracted; controlling liquid in cells of the material to be extracted to freeze to a first state; and controlling the liquid in the cells of the material to be extracted to heat to a second state to make the ingredients of the material to be extracted separate from the broken cells. When freezing to the first state, the liquid in the cells forms ice crystals, which causes the cells to expand and break. When heating to the second state, the ice crystals in the cells melt, and the effective ingredients of the material to be extracted separate from the broken cells. Since the refrigerator has a heating function, it solves the problem of slow melting of the material to be extracted. Since the refrigerator can accurately control the freezing and melting states, it solves the problems of difficult end-point control of melting and food spoilage.

This application provides a refrigerator. The refrigerator includes a housing provided with at least one magnetic field preservation chamber, a magnetic field generating device for generating a magnetic field within the storage space of the magnetic field preservation chamber, and a cooling system for cooling the magnetic field preservation chamber. The magnetic field generating device is configured to set the magnetic field strength inside the storage space in the range of 10 gauss to 100 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -10°C to 0°C, or the magnetic field generating device is configured to set the magnetic field strength inside the storage space in the range of 5 gauss to 40 gauss, and the cooling system is configured to set the temperature inside the storage space in the range of -30°C to -15°C. This makes it possible to refrigerate food at sub-zero temperatures, or to reduce the formation of large ice crystals inside when freezing food, thereby improving preservation effectiveness.

The utility model discloses an anti-frosting structure of a refrigeration house in the technical field of refrigeration house equipment, which comprises an aluminum-zinc-plated steel plate, a metal framework is arranged on one side of the aluminum-zinc-plated steel plate, an aerogel felt is arranged on one side of the metal framework, a vacuum insulation plate is arranged on one side of the aerogel felt, a micro-channel heat pipe is arranged on one side of the vacuum insulation plate, and the micro-channel heat pipe is arranged on one side of the micro-channel heat pipe. A polyurethane foaming layer is arranged on one side of the vacuum heat insulation plate, a nanometer hydrophobic aluminum foil layer is arranged on one side of the polyurethane foaming layer, a carbon nano tube electric heating film is arranged on the surface of one side of the nanometer hydrophobic aluminum foil layer, and multiple sets of dew point sensors are installed on the surface of the carbon nano tube electric heating film in an embedded mode. Cold bridge heat can be continuously guided out through the arranged micro-channel heat pipe, the active defrosting frequency is reduced, the carbon nano tube electric heating film arranged in a gridding mode is matched with the dew point sensor, accurate local defrosting can be achieved, energy consumption is reduced, the nanometer hydrophobic aluminum foil layer can reduce the ice crystal adhesive force, the frosting amount is reduced, and the service life of the device is prolonged.

The application discloses a preparation method of anisotropic glass fiber aerogel, which comprises the following steps: preparing a glass fiber dispersion solution; preparing an aluminum dihydrogen phosphate solution; preparing a polyvinyl alcohol solution; uniformly mixing the three solutions, pouring into a customized mold, freezing until complete solidification, and then performing freeze drying to obtain the glass fiber aerogel. Due to the influence of multiple temperature gradients on the aerogel, ice crystals grow vertically along the temperature gradient to form lamellas, and different cold surfaces interact to cause them to grow along the radial plane to the center of the square mold, finally forming an array radiation structure composed of four cones. The glass fiber aerogel prepared through the synergistic cooperation of the freeze casting technology and the aluminum dihydrogen phosphate has anisotropy and highly ordered lamellas, and therefore exhibits good low thermal conductivity.

The invention provides a hail landing time prediction and evaluation method based on multivariate data, and the method comprises the steps: extracting the ascending airflow driving data of a height corresponding to the distribution range of a key region, analyzing the fluctuation amplitude and frequency change of the ascending airflow speed of different height layers along with the time, and obtaining the spatial-temporal characteristics of the convection intensity change, determining the relevance between the convection intensity change and the ice crystal nucleus generation rate, and outputting the corrected ice crystal nucleus generation rate according to the relevance; and dynamically adjusting simulation parameters of the ice crystal nucleus generation rate according to the correlation coefficient of the convection intensity and the corrected ice crystal nucleus generation rate, obtaining the distribution of the adjusted ice crystal nucleus generation rate, and simulating the evolution path of the hail inoculation process by combining the spatial-temporal characteristics of the change of the convection intensity to obtain a dynamic simulation result of the hail inoculation process.

The utility model relates to the technical field of unfreezing machines, and discloses a submerged impingement flow low-temperature unfreezing machine which comprises a box body and an unfreezing device arranged in the box body, an upper cover plate is arranged at an opening in the top of the box body, a water inlet pipe penetrates through the upper cover plate, an upper pipe opening of the water inlet pipe protrudes out of the upper cover plate, and a lower pipe opening of the water inlet pipe downwards extends into the box body. The end of the lower pipe opening is sleeved with a water flow impact ball. The device can be used for efficiently unfreezing the freezing and thawing bags in a low-temperature environment, effectively reduces the generation of ice crystals in the unfreezing process through ultrasonic vibration, and is suitable for unfreezing small batches of freezing and thawing bags in a laboratory. The device is provided with the water flow impact ball, the water flow impact ball is connected to the bottom of the water inlet pipe in a sleeving mode, a proper hole is formed in the water flow impact ball, impact water flow conveniently penetrates through a water body to impact the freezing and thawing bag, and the freezing and thawing bag is unfrozen through low-temperature water in a low-temperature environment. A plurality of groups of sleeving structures of the water inlet pipes and the water flow impact balls are arranged in the box body, so that a plurality of freezing and thawing bags can be unfrozen at one time, and the unfreezing efficiency is high.

The invention provides a high-temperature-resistant anti-oxidation prebaked anode coating material. The coating material is prepared from the following materials in percentage by mass: 65%-68% of an aluminum oxide base material, 5% of a grain pre-activation material, 0.4%-0.6% of a nano yttrium oxide material, 21%-23% of a modified silica sol material and the balance of water, the invention further provides a preparation method of the high-temperature-resistant antioxidant prebaked anode coating material, the method is simple in process and controllable in cost, and the prepared coating material is convenient to use and suitable for large-scale popularization. The high-temperature-resistant anti-oxidation prebaked anode coating material prepared by the invention can be sintered at a low temperature, a protective layer is formed on the surface of an anode, and corrosion of oxygen, hydrogen fluoride gas, carbon dioxide gas and cryolite steam to an anode carbon block at a high temperature is prevented, so that the problems of high-temperature oxidation consumption of the prebaked anode in the service process and impurities brought in molten aluminum are solved.

The application provides a full-layer turbulence inversion method based on spectrum fusion of a laser radar and a millimeter wave radar, wherein observation data of equipment in a same observation area are acquired; then, cloud micro-physical phase state recognition is performed, and liquid cloud areas, ice crystal / snow areas, rainfall areas and supercooled water areas are divided; the particle falling speed is set as zero in the supercooled water area as a strong physical priori; a dual-wavelength speed consistency criterion is introduced, the speed responses of the laser radar and the millimeter wave radar are compared at a same height layer, and an anchor point mode, a deviation correction mode or a model rollback mode is dynamically switched, so that the physical coupling of air vertical movement and particle sedimentation movement is realized; on this basis, the second-order structure function method is applied to invert the full-layer turbulence dissipation rate based on the decoupled air vertical speed time sequence. The application can invert the real full-height-layer turbulence dissipation rate, and is suitable for all-weather, full-height-layer and especially high-precision wind field and turbulence monitoring under complex cloud and precipitation conditions.

The utility model discloses a glass -steel cold storage door belongs to cold storage door technical field, include: cold storage door body, the cold storage door body side is connected with the sealing frame, and the one side of cold storage door body is close to the sealing frame and is equipped with the fixed through slot, and the inner chamber of fixed through slot is provided with two horizontal symmetry arrangement's visible glass, cleaning assembly sets up in the fixed through slot of cold storage door body for cleaning visible glass, and cleaning assembly contains fixed plate and two connecting plates, and the opposite side of two connecting plates all are welded with cold storage door body, and the curved surface of fixed plate is connected with two connecting plates, and the side of fixed plate is rotatably connected with rotating link through bearing, and the both end surfaces of rotating link are connected with rotating disc and the cleaning plate for cleaning visible glass respectively, and the side of cleaning plate close to rotating link is slidably contacted with visible glass, the utility model discloses can clean the ice crystal that can be condensed on the surface of visible glass, strengthens the visibility of visible glass, improves the use convenience of cold storage door.

1. Name of the designed product: clothing (ice crystal fairy tale). 2. Use of the designed product: for wearing. 3. Design points of the designed product: in the combination of shape and pattern. 4. Picture or photo that best shows the design points: front view. 5. The designed product is a thin product, and other views are omitted.

The utility model discloses a crystal separation device of an borneol crystallizing tank, which relates to the technical field of crystal separation of borneol and comprises a bottom plate, an L-shaped plate fixedly connected to the upper surface of the bottom plate, a hydraulic push rod fixedly mounted on the upper surface of the bottom plate, a placing disc fixedly mounted at the top end of the hydraulic push rod, and a solid body of the borneol crystallizing tank placed on the placing disc. And a clamping turnover mechanism and a separating mechanism are arranged on the L-shaped plate. According to the utility model, through the arrangement of the clamping and overturning mechanism and the separating mechanism, the clamping and overturning of the borneol crystallizing tank entity and the efficient separation of borneol in the tank can be realized, the separated borneol can smoothly slide down and be collected, and the automatic separation operation of the borneol is completed.

This invention relates to the field of signal processing technology, specifically a satellite navigation signal processing system, comprising: a multi-dimensional data acquisition module, a space-time modeling module, an interference suppression processing module, and a signal output module. The multi-dimensional data acquisition module is used to acquire satellite navigation signals under polar high-altitude environments. The space-time modeling module is used to establish a joint space-time model of the satellite navigation signals and divide the propagation paths of the satellite navigation signals into space-time units. The interference suppression processing module is used to extract the space-time unit division data and perform interference detection and suppression processing on ice crystal cloud coherent multipath interference in the satellite navigation signals through a signal receiving device. The signal output module is used to output the interference-suppressed satellite navigation signal. This invention solves the problem in the prior art where it is difficult to effectively identify and compensate for ice crystal cloud interference, leading to a decrease in the positioning accuracy of the navigation system.

The invention discloses an ice crystal observation system and method, and relates to the technical field of meteorological simulation, and the system comprises an experiment box, a water cooling system, and a camera system. A cold and hot table and a liquid drop generator which are positioned between the air inlet and the air outlet are arranged in the experiment box; the cold and hot table is used for placing a to-be-tested sample, and the liquid drop generator is used for performing liquid dropping operation on the to-be-tested sample on the cold and hot table so as to control liquid drops of the liquid drop generator to drop onto the to-be-tested sample; an air uniformizing device is arranged at the air inlet, and external airflow is uniformized by the air uniformizing device, then swept over an area between the cold and hot table and the liquid drop generator and then is exhausted from the air outlet; the water cooling system is communicated with a cooling channel below the cooling and heating table and used for controlling the temperature of the cooling and heating table; the camera shooting end of the camera shooting system directly faces the transparent observation window of the experiment box and is used for collecting dynamic images of ice crystals formed on the to-be-tested sample on the cold and hot table, and the ice crystal generation process can be efficiently and accurately simulated.

The present application relates to the technical field of data processing, and more particularly to a freeze-drying parameter intelligent regulation system, which comprises a collection module, a determination module, a stage determination module, a type determination module, a control module, a verification module and an adjustment module. The present application constructs a quality index through multi-dimensional quantitative characterization data, and identifies whether the sublimation stage is abnormal by analyzing the time sequence coupling characteristics of ice crystal displacement rate and surface collapse degree. Further, the present application distinguishes the abnormal reasons by using the combination characteristics of rate offset and collapse change rate, so as to take targeted strategies. The regulation effect is verified by the rehydration qualification rate. Based on the historical abnormal density, the threshold is optimized, and the precise positioning and differential treatment of abnormal root causes are realized through multi-parameter coupling analysis, thereby effectively solving the problems of low abnormal recognition accuracy and low freeze-drying control precision caused by excessive dependence on static threshold and inability to adapt to complex working conditions.

The application belongs to the technical field of drying processing, in particular to a drying device for an ice crystal production line, which comprises a butt joint component, left and right sides of the butt joint component are symmetrically provided with traction components, a drying component is arranged on one side of the top of the traction component close to the butt joint component, and a pressurizing component is arranged on the other side of the top of the traction component away from the butt joint component; the pressurizing component comprises an outer rotating cylinder shell, and an oil tank is fixedly connected to the shaft center of the inner cavity of the outer rotating cylinder shell. The device can simultaneously spray fire from the inside and outside of the mesh baffle through the inner flame spray head and the ignition lance, uniformly heat the ice crystal inside and outside of the mesh baffle, and avoid the problems of uneven heating of the ice crystal and over-drying of the ice crystal, thereby avoiding the problem of burning of the ice crystal.

The invention relates to the technical field of drying, in particular to energy-saving type vacuum freeze dryer equipment and a using method thereof.The equipment comprises a machine shell, a heat pump, a heating mechanism, a capturing mechanism, a vacuum pump and a sealing door mechanism; the pre-frozen materials are placed on a heating mechanism in a drying bin; after it is confirmed that the sealing door mechanism is well sealed, a vacuum pump is started to start vacuumizing, and when the vacuum degree in the drying bin is reduced to a set value, a heat pump is started; after the heat pump is started, the heating mechanism starts to slowly increase the temperature of the materials, ice crystals in the materials directly sublimate into water vapor, and the water vapor enters the capturing bin and is captured by the capturing mechanism until the materials are thoroughly dried; after drying is completed, the heat pump and the vacuum pump are closed firstly, then the sealing door mechanism is opened, and materials are taken out. The problems that a traditional vacuum freeze dryer is high in overall energy consumption and not energy-saving enough are solved.

This invention discloses a dry ice crystal particle, its preparation method, and a ceramic tile, relating to the field of ceramic tile technology. The dry ice crystal particle is prepared from a first flashing frit, a second flashing frit, and a matte frit. Since the dry ice crystal particle is composed of three frits with different refractive indices and firing temperatures, different phases can be formed due to the different firing temperatures of each frit. The differences in light transmittance and refractive index between these phases are then utilized to create a better flashing effect. Simultaneously, the matte glaze serves as a backdrop, further enhancing the display of the flashing effect.

This utility model discloses a novel household air cooler, including an air guide sleeve. Multiple equally spaced support plates are fixed to the bottom outer wall of the air guide sleeve, and a base is fixed to the bottom outer wall of each support plate. A fan, a lower isolation mesh frame, and an upper isolation mesh frame are fixed to the inner wall of the air guide sleeve from bottom to top. Multiple partitions are fixed to the inner walls of the upper and lower isolation mesh frames respectively. Multiple ice ball shells are placed on top of the lower isolation mesh frame. A first and second through-slot are formed on the outer wall of the air guide sleeve, and the upper isolation mesh frame is located on one side of the top inner wall of the first through-slot. This utility model has a simple and compact structure, low cost, and significant cooling effect. Utilizing the latent heat of phase change, only 4 liters of ice crystals can cool nearly 160 cubic meters of air at 40°C to 24°C. Hot air does not carry ice water into the air, thus not only not increasing air humidity but also helping to reduce it. Furthermore, the ice inside the ice ball shells can be regenerated by freezing in a refrigerator and reused.

The application provides a kind of quick freezing device based on konjak product, including tunnel freezer body, also including ice bridge generation seat and electric field guide rail;The application realizes the controllable adhesion between the adjacent konjak tofu sides and corners during quick freezing by the multifunctional integrated design of ice bridge generation seat and electric field guide rail, forms the overall structure similar to "stamp unit", which is convenient for batch forming and automatic handling, and also makes consumers easily break apart;At the same time, the arc-shaped demolding rod on the electric field guide rail mechanically triggers the outward movement of the side baffle and links the piston exhaust jet, realizes the double soft demolding of mechanical drawing and airflow injection, effectively avoids product damage;At the same time, the electric field guide rail is reused as parallel electrodes to apply alternating electric field, promote the formation of small ice crystals, combined with the segmented temperature zone design of the pre-cooling zone and quick-freezing zone of the tunnel freezer body, significantly reduces the juice loss rate after thawing and maintains the Q elastic taste.

The invention relates to an icing detection method of an ice crusher, which is applied to a controller of the ice crusher, and the method comprises the following steps: in a stable observation time period of a refrigeration stage, obtaining a current temperature of a mixture and a current stress signal of a stirring part in a stirring process; determining a target freezing point corresponding to the mixture, and setting a dynamic detection temperature window based on the target freezing point; when the current temperature falls into the dynamic detection temperature window, performing multi-frequency energy analysis on the current stress signal to obtain a multi-frequency energy value; determining a normal stress fluctuation value corresponding to the stress response of the stirring part at the current temperature; and if the multi-frequency energy value exceeds the preset multiple of the normal stress fluctuation value, it is judged that the ice crystal adhesion risk exists, and the refrigeration system is controlled to execute intervention operation. According to the invention, the abnormal icing condition of the ice crusher can be identified.

A device and method for measuring the uniformity of an ice crystal field are disclosed, belonging to the field of ice crystal testing technology. This invention solves the problem of poor uniformity and stability of ice crystal fields in existing technologies. Key technical points include: calibrating the ice crystal field uniformity measuring device; placing the frame of the device against one side of the test area; using an external weighing sensor to measure the mass of the collection bags on both sides of the ice crystal nozzle being tested; and graphically calculating the effective coverage diameter of a single ice crystal nozzle. Based on the axial spacing of the nozzles, the width (X) of the ice crystal field test area, and the height (Y) of the test area, the nozzles are arranged to ensure proper ice crystal distribution in the test area. This invention is used to measure the effective coverage diameter and uniformity of ice crystals ejected from a single nozzle in the test area. The arrangement and spacing of the ice crystal nozzles can be adjusted according to their effective coverage diameter to improve the ice crystal field coverage area of ​​the test area.

The invention relates to the technical field of medical image and artificial intelligence technology crossing, in particular to an intelligent auxiliary diagnosis method and system for a frozen section in a thyroid cancer operation. According to the technical scheme, the method comprises the following steps that a thyroid tissue intraoperative frozen section to be diagnosed is prepared, and the frozen section does not need to be dyed or subjected to section sealing treatment; and scanning the frozen section by using a terahertz near-field imaging system to obtain terahertz near-field image data of the frozen section. According to the method, the terahertz near-field imaging technology is adopted, the situation that cell nucleus morphology is difficult to observe due to ice crystal artifacts in a traditional frozen section is avoided, cancer cells are automatically recognized in combination with an AI model trained based on large-scale labeling data, and the objectivity and consistency of diagnosis are remarkably improved; meanwhile, the steps of dyeing and mounting are omitted, and rapid imaging and analysis are realized, so that the intraoperative diagnosis time is greatly shortened, and a generated visual contour report also provides visual decision support for pathologists.