119 results about "Refrigerated temperature" patented technology

A tag includes: a temperature indicating material; and an identifier that presents identification information uniquely identifiable by appearance. A control method includes: capturing, with a camera, an image of a first food item that is a food item to be stored, or a food item stored, in an interior of a refrigerator to generate the image showing the tag, the tag being attached to the first food item; obtaining a temperature of the first food item by analyzing a color of the temperature indicating material included in the tag shown in the image generated; and generating control information to control cooling of the interior of the refrigerator by comparing the temperature obtained with an appropriate temperature range for the interior of the refrigerator, and transmitting the control information generated to the refrigerator.

The invention discloses constant-temperature curing and loading integrated test equipment for preparation of mixing piles, and relates to the technical field of preparation of mixing piles, and the constant-temperature curing and loading integrated test equipment comprises a refrigerator, a constant-temperature device, a loading device and a multi-angle mixing pile preparation device. According to the constant-temperature curing and loading integrated test equipment for preparing the stirring pile, through coordination of heating and refrigerating, the temperature control precision of a conventional refrigerator is improved, and the uniformity of a temperature field in the refrigerator is guaranteed; the whole process from pile manufacturing, maintenance to loading is completed in the same constant-temperature space, interference caused by process conversion is eliminated, finally, the reinforcing process and effect of the inclined cement-soil mixing pile in the high-temperature frozen soil roadbed are accurately simulated, and test errors caused by temperature fluctuation and process separation in a traditional method are avoided; by quickly adjusting the angle of the stirring rod and selecting different spray hole combinations, one device can simulate various construction processes, different scientific research and test requirements are met, and the flexibility in use is improved.

The invention relates to the technical field of biological preservation, in particular to a refrigerator food material preservation method and system based on a multi-modal decision dynamic weight mechanism, and the method comprises the steps: collecting multi-modal characteristic data of food materials; constructing a dynamic weight attention mechanism, and dynamically adjusting the fusion weight of each modal feature; combining a GNN graph neural network to construct a food material spoilage correlation graph, and outputting a spoilage risk prediction value at a t moment; an optimal fresh-keeping strategy combination is generated through multi-objective optimization; and processing real-time disturbance by adopting a model predictive control method and outputting a cooperative control signal. According to the method, the dynamic weight attention mechanism based on the food material category and the storage state is constructed to realize adaptive weight fusion of temperature, humidity, gas, weight and vision sensor modalities, so that the time sequence adaptability, the category specificity and the response sensitivity of multi-modal fusion are improved; and the contribution degree of the key sensor can be adaptively enhanced by the system in different scenes, and the corruption risk prediction precision is remarkably improved.

Provided is an automated analyzer comprising a reagent cooler such that it is possible to cool the entire interior of the reagent cooler with one refrigeration device while also preventing condensation in the reagent cooler.　This automated analyzer comprises: a reagent cooler that cools a plurality of reagent containers; a heat pipe that is provided inside the reagent cooler and cools the interior of the reagent cooler; a cooling device that cools the heat pipe; a dehumidification pipe that conveys air from the exterior of the reagent cooler and discharges the same from an end thereof into the reagent cooler interior, at least one section of said dehumidification pipe being in contact with or in the vicinity of the heat pipe; and a first drain that drains, to the exterior of the reagent cooler, condensation water which drains from the end of the dehumidification pipe.

The application provides a refrigerator control method and a refrigerator. The refrigerator comprises a cabinet, a storage space and a freezing space arranged below the storage space are defined in the cabinet, a compressor and a fan are arranged in the freezing space, the compressor is used for refrigeration, and the fan is used for refrigeration for the storage space in cooperation with the compressor. The control method comprises the following steps: acquiring an ambient temperature and a stop time of the compressor; acquiring a corresponding time threshold according to an interval in which the ambient temperature is located; if the stop time of the compressor is greater than the time threshold, the compressor and the fan are started; if a current temperature of the storage space is less than a temperature threshold, the fan is controlled to stop; and the compressor is controlled to stop after a preset time. According to the ambient temperature and the stop time of the compressor, the application controls the start and stop of the compressor and the fan, so that the freezing space also reaches a target temperature at a lower ambient temperature.

The application relates to a cold quantity distribution method and device, a refrigeration equipment and a computer readable medium. The method comprises the following steps: calculating the current refrigeration demand and freezing demand of the refrigeration equipment; determining a target cold quantity distribution strategy according to the refrigeration demand and the freezing demand; controlling the operation states of the refrigeration circuit and the freezing circuit respectively according to the target cold quantity distribution strategy, and controlling the on-off of the bypass pipeline according to the target cold quantity distribution strategy, so that the refrigeration evaporator in the refrigeration circuit is reused as an auxiliary condenser of the freezing circuit through the bypass pipeline, or the cold quantity of the freezing circuit is supplemented to the refrigeration circuit through the bypass pipeline, so that the cold quantity is distributed according to the actual demand of the refrigeration equipment. The application controls the operation states of the refrigeration circuit and the freezing circuit, and adjusts the on-off of the bypass pipeline between the two, so as to schedule the cross-circuit cold quantity, realize on-demand distribution of the cold quantity, and solve the technical problem that the cold quantity distribution of the existing refrigerator cannot adapt to the real-time demand of each temperature zone.

The invention provides a refrigeration equipment control method and device, a refrigerator and a computer readable storage medium. The method comprises the steps that a target freshness index of target food in a food storage bin is obtained; determining the index change speed of the target freshness index according to the target freshness index; and if the index change speed is greater than or equal to a preset speed change threshold value, adjusting operation parameters of the antibacterial equipment so as to reduce the decay speed of the target food. According to the refrigeration equipment control method, the target freshness index of the stored target food can be obtained firstly, and the index change speed of the freshness of the target food is determined according to the freshness index, so that the decay speed of the target food is determined. And if the decay speed of the target food is high, the operation parameters of the antibacterial equipment arranged in the refrigeration equipment can be adjusted, then the activity of microorganisms in the refrigerator is reduced, the decay speed of the food is reduced, and compared with pure temperature and humidity preservation, the food preservation effect is improved.

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.

A complex ester of a divalent carboxylic acid, a divalent alcohol, and at least one selected from a monohydric alcohol and a monocarboxylic acid, wherein the divalent alcohol consists of a branched divalent alcohol having no quaternary carbon.

The invention discloses an anti-freezing method for an electric air door of a refrigerator. The anti-freezing method comprises the following steps: S1, entering a defrosting mode; s2, the defrosting heater is started in the whole process; s3, hot air started by the defrosting heater is blown to a refrigeration air inlet; s4, after the defrosting heater is started for the time t1, the freezing fan is started for the time t2, and fins of the whole defrosting heater are heated more uniformly by starting the freezing fan for the time t2; s5, after the freezing fan is shut down, the electric air door is reset once, by resetting the electric air door once, the water defrosted by the defrosting heater fins cannot stay at the air door, and after refrigeration, the water at the air door is frozen; s6, whether the current defrosting sensor temperature A is larger than or equal to T DEG C or not is judged, and if yes, the defrosting mode is quitted; s7, if not, the freezing fan is started for the time t4 after the time t3; and S8, after the freezing fan is shut down, the electric air door is reset again, circulation is conducted in sequence till the temperature of the defrosting sensor A is larger than or equal to T DEG C, and the defrosting mode is quitted.

A soda carbonation and dispensation system and method are provided. The system includes a carbonated water pump and motor assembly operable to draw fresh water into carbonator tanks and circulate the water through a chiller system. A carbon dioxide source is connected to the carbonator tanks to produce carbonated water. The system also includes a water level sensor connected to a controller, a plurality of syrup containers, a syrup pump, syrup regulator valves, a brix capacitor, a dispensing tower and faucets connected to the dispensing tower housing. The controller operates the water pump and motor assembly to maintain a water level within a predetermined range and to maintain continuous flow and refrigeration of the carbonated water, which optimizes carbonation. The brix capacitor receives chilled carbonated water and chilled syrup in separate lines. Carbonated water is circulated to the faucets through a manifold in the brix capacitor and then circulated back into the carbonator tanks. Valves are provided in the brix capacitor to manipulate carbonated water and syrup flow rates and pressures into the faucets. The system maintains the carbonated water and syrup at a refrigerated temperature and a predetermined maximum pressure. When a faucet is opened, the carbonated water and syrup mix as they flow laminarly into a container. The result is consistently optimum carbonation when the beverage is dispensed.

To provide a household refrigerator that can store food while suppressing chilling damage and maintaining its quality. [Solution] In this embodiment, the household refrigerator 1 has a control unit 45 that repeatedly performs a refrigeration cooling operation to cool the refrigerated storage compartment and a freezing cooling operation to cool the freezer compartment, while repeatedly performing a cooling and preservation operation to adjust the refrigerated storage compartment to a first temperature above the freezing point, and a recovery operation to adjust the refrigerated storage compartment to a second temperature higher than the first temperature to recover from low-temperature damage to food. The control unit performs such a procedure that the total time for performing one cooling and preservation operation and one recovery operation is longer than the total time for performing one refrigeration cooling operation and one freezing cooling operation.

By extending the lifespan of the refrigeration unit and reducing the frequency of replacement, the operating rate of the MRI system will be improved. [Solution] The cold head life extension mode is implemented. In the cold head life extension mode, the refrigerator's displayer is operated at a constant frequency lower than a predetermined upper frequency, regardless of the temperature of the superconducting coil, and the compressor inverter controls the drive frequency of the compressor drive unit according to the temperature of the superconducting coil.

This invention discloses a low-temperature storage device for icy acid swabs and a method for preparing icy acid swabs. The device includes a box with a cavity inside, and a partition separating the cavity into a first chamber and a second chamber. A container is located within the first chamber, with a cover plate pressing against its top. A liquid storage tank is located within the second chamber, containing a storage cavity. A first through-hole is located at the top of the storage tank, allowing access to the storage cavity. A sealing plate is located above the storage tank, pressing against its top. An elastic element is also included, with one end connected to the partition plate and the other end connected to the sealing plate. A connector is located at the top of the sealing plate, with its top extending outside the box. A cover plate is fitted onto the connector. A locking mechanism is located at the top of the box, with the top of the connector connected to the locking mechanism. This invention prevents swabs soaked in acidic solutions from freezing during low-temperature refrigeration, thus avoiding potential damage to the patient's oropharynx when irritated.

1. The name of the design product: the refrigerator for veterinary of livestock. 2. The use of the design product: for constant temperature storage of veterinary medicine of livestock. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

This invention discloses a scaled-down model for the development and characterization of freeze-thaw processes for biological agents and its application. The model has a volume of 100-1000 mL. When placed vertically, the ratio of the maximum cross-sectional area in the horizontal direction to the length in the vertical direction is 1-10:1. The amount of biological agent is 20%-80% of its volume, and the ratio of the maximum cross-sectional area to the liquid level is 1-15:1. After the biological agent is loaded into the scaled-down model, it is transferred from room temperature to a freezer. After complete freezing, it is removed and thawed at room temperature. The freezing concentration factor is tested, and the duration of ice-water interface coexistence is recorded. The scaled-down model of this invention can obtain a freezing concentration factor greater than or close to that of the control model by comparing the freezing concentration factor with that of a large-volume freeze-thaw process. Multiple freeze-thaw cycles ensure that the ice-water interface coexistence time is not shorter than that of the large-volume container, which can be used for subsequent development and characterization of freeze-thaw processes for biological agents. The scaled-down model of this invention uses a small amount of biological agent and does not require temperature control equipment, which can significantly reduce research and development costs.

The invention relates to the technical field of refrigerator control, in particular to a high-freshness food material preservation method, device and equipment and a storage medium, according to the method, stored food material information input by a user is obtained, in combination with a pre-constructed storage parameter table, the target temperature and the target humidity of each storage partition can be dynamically adjusted according to different food material characteristics, and the storage efficiency is improved. Therefore, the optimal fresh-keeping effect in a multi-category mixed storage scene is achieved, and the defect that a traditional refrigerator cannot meet the differentiated requirements of multi-category food materials is effectively overcome; based on the confirmed target temperature and target humidity of each partition, the real-time temperature and real-time humidity of each storage partition are regulated and controlled in real time through a frequency conversion refrigeration unit and a humidity adjusting unit, and the requirement of sashimi type high-freshness food materials for the precise temperature and humidity range can be met; the problem that the fresh-keeping effect is poor due to fixed partition arrangement of a traditional refrigerator is solved, the risk that food materials go bad quickly due to temperature fluctuation is reduced, and therefore the fresh-keeping period of the food materials is prolonged.

The embodiment of the invention provides a foaming material, a preparation method thereof and a refrigerating device. The foaming material comprises a component A and a component B. The component A comprises, by weight, 15-18 parts of a foaming agent, 93-97 parts of polyether polyol, 3-7 parts of polytetrahydrofuran ether polyol, 0.8-1.2 parts of a surfactant and 0.6-1 part of a catalyst, and the component B comprises, by weight, 145-151 parts of isocyanate. According to the foaming material provided by the embodiment of the invention, by adding the polytetrahydrofuran ether polyol, the mechanical property of the foaming material can be improved, the foaming material is not prone to cracking and other problems in the using process, so that the heat preservation performance of the refrigerator is kept stable, the adding amount of the foaming agent in the foaming material is low, and the foaming material is suitable for being used in the refrigerator. The production cost of the foaming material can be reduced, and meanwhile the environment-friendly performance of the foaming material is improved.

The invention provides a fresh-keeping refrigerator. The fresh-keeping refrigerator comprises a fruit and vegetable fresh-keeping special area arranged in a refrigerating chamber; the fruit and vegetable fresh-keeping special area comprises a fresh-keeping special area drawer which is connected into the fruit and vegetable fresh-keeping special area in a sliding mode. A fresh-keeping space for storing fruits and vegetables is formed between the top cover and the fresh-keeping special area drawer; the humidifying assembly is arranged in the fruit and vegetable fresh-keeping special area, and the humidifying assembly is used for improving the humidity in the fruit and vegetable fresh-keeping special area; the control module is configured to obtain the environment temperature and the environment humidity; according to the environment temperature and the environment humidity, seasonal environment parameters are determined; the temperature and humidity in the refrigerating chamber are adjusted according to the seasonal environment parameters; the fruit and vegetable variety is obtained, and the temperature and humidity in the fruit and vegetable fresh-keeping special area are adjusted according to the fruit and vegetable variety, so that the problem that the temperature and humidity in the fruit and vegetable fresh-keeping special area cannot be adjusted according to environment changes in different seasons and the fruit and vegetable types in the existing refrigerator fruit and vegetable fresh-keeping technology is solved.

The application provides a method and a device for controlling humidity of a freezing chamber of an air-cooled refrigerator, the method comprising: controlling the compressor to operate at a first rotating speed, so that the temperature of refrigerant flowing in the evaporator module is lower than the temperature of air in the freezing chamber, and the evaporator module is at least partially frosted; controlling the compressor to operate at a second rotating speed, so that the temperature of refrigerant flowing in the evaporator module is increased to sublimate the frost of the evaporator module, thereby humidifying the freezing chamber, wherein the second rotating speed is lower than the first rotating speed. The method for controlling humidity of the freezing chamber of the air-cooled refrigerator can effectively increase the humidity of the freezing chamber to reduce dry consumption of food materials and enhance the preservation capacity of the refrigerator.

This invention discloses a method for preparing a fly ash-based hardening agent, comprising: 1) acid leaching to obtain an acid leaching solution, then washing the solid residue with deionized water until neutral, and drying at 110 ℃ for 2 h to obtain a dried sample; 2) alkali leaching: mixing and stirring the dried sample with an ammonia solution at room temperature, then vacuum filtering and separating, collecting the alkali filtrate, rinsing the filter with distilled water, collecting the washing liquid, and mixing the alkali filtrate and washing liquid to obtain an alkali leaching solution; 3) polymerization: adding the alkali leaching solution dropwise into the acid leaching solution while magnetically stirring until the pH value is 4.2, and aging to obtain a stable polysilicate; 4) preparing polysilicates with different (Al+Fe) / Si ratios, bathing in a 30 ℃ water bath for 24 h, then storing in a 4 ℃ refrigerator, and drying all samples in a -42 ℃ freeze dryer for 48 h to obtain the fly ash-based hardening agent. This invention's preparation method has high resource utilization, strong process synergy, controllable and adjustable products, environmental friendliness, and high hardening removal efficiency.

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator and a control method thereof. A controller of the refrigerator obtains the temperature of an evaporator in real time through a temperature sensor after a heater is started, and timing is started when the stable time length of the temperature of the evaporator reaches the first target time length; when the temperature of the evaporator rises to reach the first temperature increment or the timing duration reaches the defrosting duration threshold value, timing is stopped; the defrosting duration is determined according to the duration between the start timing and the stop timing; and the defrosting quit temperature is determined according to the defrosting duration, and the defrosting quit temperature is in positive correlation with the defrosting duration. The freezing amount of the evaporator is quantified more accurately by utilizing the defrosting duration after the first duration of the temperature of the evaporator reaching the stable state, it can be guaranteed that full defrosting is conducted when the freezing amount is large, defrosting can be completed more quickly when the freezing amount is small, energy consumption is reduced, the influence on the storage chamber is reduced, and defrosting according to needs is achieved.

The invention relates to a test cover and a test method, the test cover comprises an outer cover body and an inner interlayer, a first side wall of the outer cover body defines a through hollow structure, one end of the hollow structure is sealed through a first top wall, and the other end forms a first opening; the inner interlayer is enclosed by a second side wall and a second top wall to form a test cavity, at least one of the second side wall and the second top wall is provided with a ventilation structure, and a second opening is formed relative to the second top wall; the first opening and the second opening are connected to form a water injection cavity for loading test water; high-temperature steam generated after test water is heated by the heating piece enters the test cavity through the ventilation structure, and the test cover structure not only provides a high-temperature and high-humidity environment needed by refrigerator test, but also is simple in structure and easy to move.

The invention discloses a control system and method for an intelligent fragrance deodorizing refrigerator and a storage medium, and the system comprises a fragrance slow release module arranged at an air duct of a refrigerating chamber, a temperature sensor arranged in the refrigerating chamber of the refrigerator, and a smell sensor arranged at an air return port of the refrigerating chamber, and the controller is electrically connected with the smell sensor, the temperature sensor and the fragrance slow-release module. The controller is configured to obtain peculiar smell concentration data detected by the smell sensor, determine a preset release parameter of the fragrance slow-release module according to the peculiar smell concentration data, obtain temperature data detected by the temperature sensor, and perform temperature compensation on the preset release parameter based on the temperature data to generate a target release parameter of the fragrance slow-release module; and generating a control instruction according to the target release parameter to control the fragrance slow-release module to execute a release operation according to the target release parameter. According to the application, on-demand release and temperature compensation are realized, the consistent release effect at different temperatures is ensured, and the deodorization accuracy and the user experience are improved.

The embodiment of the invention relates to a refrigeration control method and device of equipment, storage equipment and a storage medium. According to the method, when it is detected that objects are stored in a preset area of target equipment, a refrigeration device in the preset area is controlled to refrigerate the objects according to a preset cooling rate; determining the first temperature of the article and the humidity of the surface of the article according to the actual cooling rate of the surface of the article in the refrigeration process; calculating a target temperature corresponding to the article according to the first temperature and the humidity; and controlling the refrigeration device to refrigerate the object according to the target temperature. Wherein the target equipment can be an energy-saving refrigerator or a freezer, the first temperature of the article is determined by adjusting the cooling rate of a refrigeration device of the target equipment, the target temperature is calculated by combining the humidity, so that the article is subjected to fresh-keeping refrigeration, the characteristics of the article in the cooling process are adapted, the temperature during fresh-keeping is dynamically adjusted, and over-freezing injury or insufficient temperature control is avoided; the fresh-keeping quality is guaranteed, and the refrigeration efficiency is improved.

The application provides a food fermentation control method, a refrigerator and a computer readable storage medium, and comprises the following steps: obtaining a target oxygen concentration range corresponding to a food to be fermented; and controlling an electrochemical module to generate oxygen through an electrochemical reaction, and discharging the oxygen into the inside of a refrigeration box body, so that the current oxygen concentration in the inside of the refrigeration box body is within the target oxygen concentration range. Since the refrigeration box body adopts a sealed direct cooling mode, a low-temperature and high-humidity environment can be provided. In addition, the oxygen content in the inside of the refrigeration space can be improved by mounting the electrochemical module, so that a high-oxygen environment can be provided. Therefore, the application can ferment under the condition of high oxygen, low temperature and high humidity, can make the food flavor more unique, delay food aging, and make the fermentation process more stable and controllable, can solve the problems that food fermentation is too fast at room temperature and is prone to sour, low-temperature fermentation is too slow, and the flavor is not clear and fragrant, and effectively promotes the activity of food low-temperature fermentation yeast and improves the unique flavor formation of fermented food.

PROCESS OF MAKING RED SPINACH YOGURT AS A PROBIOTIC AND MICRONUTRIENT SUPPLEMENTThis invention relates to the process of making red spinach yogurt as a functional food product that is used as an additional nutritional supplement for children during their growth and development. Red spinach yogurt is made from red leaf spinach varieties that are rich in micronutrients and combined with fermented milk containing probiotic bacteria. The manufacturing process includes processing red spinach into a liquid extract, pasteurizing cow's milk, adding a lactic acid bacteria starter containing Lactobacillus bulgaricus and Streptococcus thermophilus at ±1.5–2.5% (w / v), and fermentation to form yogurt. Next, the red spinach extract is mixed into the yogurt with low-calorie sugar without the addition of preservatives. The resulting red spinach yogurt has a natural purplish red color, semi-thick texture, mild sour and sweet taste, and contains micronutrients and probiotic bacteria.The product is packaged in individual food containers and stored at refrigerated temperatures so that it has a shelf life of up to ±14 days.

The utility model discloses a temperature-changing space air duct system capable of rapidly cooling and a refrigerator, relates to the field of refrigerator air duct systems, and aims to solve the problems that a temperature-changing chamber in the prior art is slow in cooling and cannot realize rapid refrigeration, and adopts the technical scheme that a first air opening is formed in the side wall of the temperature-changing chamber and is communicated with a freezing chamber; a quick-freezing fan is installed at the first air opening and can suck low-temperature cold air flow in the freezing chamber into the variable-temperature chamber so that the variable-temperature chamber can be quickly cooled, a second air opening is formed in the refrigeration air duct and communicates with the variable-temperature chamber, and cold air flow in the variable-temperature chamber can enter the variable-temperature chamber to assist in cooling, and air doors are additionally installed at the first air opening and the second air opening. And the communication state of the temperature changing chamber can be precisely regulated and controlled, so that different cooling and heat preservation requirements are met. The variable-temperature chamber can be rapidly cooled, and the effects of rapidly refrigerating food and reducing loss of nutrient substances of the food are achieved.

The invention belongs to the technical field of protozoa preservation. Relates to a cryopreservation and resuscitation method of rumen ciliates. Comprising the following steps: preparing a special cryopreservation culture medium; gathering insect bodies through centrifugation; mixing the cryopreservation protection liquid with the enriched polypide according to a ratio, and slowly and preliminarily freezing in a refrigerator at the temperature of 80 DEG C below zero; transferring into liquid nitrogen for long-term cryopreservation after staying overnight; during resuscitation, preparing a resuscitation culture medium, taking out the cryopreservation tube from the liquid nitrogen, and quickly placing the cryopreservation tube in a water bath at 39 DEG C for unfreezing; centrifugally washing to remove the cryopreservation protective agent and re-enriching the polypide; and inoculating the polypide into a resuscitation culture medium, and culturing in a constant-temperature incubator at 39 DEG C. A standardized cryopreservation resuscitation process of the internal hair rumen ciliates is established, and the operation is simple, convenient and rapid; the survival rate of the resuscitated ciliates is remarkably improved, and the highest survival rate of the mixed species can reach 58.1% through verification; particularly, the highest survival rate of a single species of incarnaeus incarnaeus can reach 66.4%; the resuscitated ciliates can quickly recover and proliferate; the method is simple, rapid and good in repeatability.

The invention discloses an ultra-low temperature cryopreservation method for tribonema, which belongs to the technical field of microalgae culture and comprises the following steps: culturing algae seeds: inoculating the algae seeds, and carrying out aerobic culture for 7-10 days until a stable phase to obtain an algae solution; algae liquid preparation: diluting the algae liquid with a BBM culture medium, and adding the diluted algae liquid into the sterilized cryopreservation tube; precooling the algae liquid: putting the cryopreservation tube added with the algae liquid into a refrigerator for precooling; adding a composite cryoprotectant: adding the cryoprotectant into the precooled algae liquid cryopreservation tube, and uniformly mixing the cryoprotectant and the precooled algae liquid cryopreservation tube; programmed cooling: putting the cryopreservation tube into a programmed cooling box, and putting the cryopreservation tube into a refrigerator for programmed cooling; and ultralow-temperature cryopreservation: putting the seeds into liquid nitrogen for preserving the seeds. The method is simple, operation is easy, pollution is not prone to occurring, and the breed conservation time is long.