7 results about "Flash Freeze" patented technology

The invention provides a preparation method and equipment of an original blueberry juice beverage, and the preparation method comprises the following steps: S1, liquid nitrogen quick freezing and wall breaking: putting cleaned blueberries in a liquid nitrogen environment for quick freezing, so that cell walls of the blueberries are broken; s2, low-temperature unfreezing and ultrafine crushing: unfreezing the blueberries treated in the step S1 in an environment of 2-6 DEG C, and then performing closed ultrafine crushing to obtain whole blueberry pulp; s3, multi-stage composite enzymatic hydrolysis: conveying the whole-fruit blueberry pulp into an enzymatic hydrolysis tank, and adding a composite enzyme preparation in two stages at 45-55 DEG C to carry out an enzymatic hydrolysis reaction; the compound enzyme preparation comprises pectinase and cellulase; s4, performing ultrahigh-pressure cold sterilization; and S5, carrying out sterile cold filling. According to the method, a liquid nitrogen quick-freezing wall breaking technology is adopted, so that the cell structure of the blueberry is quickly destroyed in a low-temperature environment, heat-sensitive active ingredients such as anthocyanin and vitamin C are effectively reserved, and the problem of nutrition loss caused by traditional hot processing is solved.

The present application belongs to the technical field of liquid nitrogen quick freezing, and particularly relates to a method for pre-cooling and segmenting liquid nitrogen quick freezing of pre-baked toast. The toast is pre-cooled in a refrigerator freezing chamber, and then frozen by using a segmenting liquid nitrogen quick freezing mode. Temperature is measured by using a temperature sensor during freezing, and temperature and time are adjusted to find the best segmenting freezing parameters. The toast is frozen by using the method, which on the one hand delays the aging of the toast by using pre-cooling and segmenting liquid nitrogen quick freezing technology, and prolongs the storage period; on the other hand, temperature is measured by using a temperature sensor, temperature and time are adjusted, and the best segmenting freezing parameters are found, which greatly improves the energy saving effect and reduces the cost.

The invention provides a processing method and device for improving freezing damage and reheating fishy smell of fish meat prefabricated vegetables. The processing method comprises the following steps: carrying out pre-cooling treatment on a pre-treated product by adopting recycled liquid nitrogen cold steam, and carrying out ultralow-temperature liquid nitrogen quick-freezing on the pre-cooled product. Carrying out modified atmosphere packaging and freezing storage on the quick-frozen product to obtain a stored product; and unfreezing and reheating the stored product by adopting a heat pipe microwave coupling technology to obtain a reheated product. The center temperature of the product is reduced to-18 DEG C or below by adopting a liquid nitrogen quick-freezing technology, and the product is sealed and stored by adopting modified atmosphere packaging. And unfreezing and reheating the stored product by adopting a heat pipe microwave coupling technology to obtain a reheated product. In the reheating process, the quality change is monitored through a low-field nuclear magnetic resonance (LF-NMR) technology, the dish is unfrozen at 45 DEG C, the water state of the dish is most stable when the dish is reheated at 800 W, and the quality is better. Through cooperative regulation and control, freezing damage is remarkably inhibited, and deodorization and synergy are achieved in the reheating stage.

The invention provides an air supply control method of an instant freezing chamber and refrigeration equipment, and relates to the technical field of refrigeration equipment, the method comprises the following steps: acquiring a temperature difference value T between an air temperature T2 in the instant freezing chamber and a temperature T1 of a heat radiation wall of the instant freezing chamber; judging whether the temperature difference value T is greater than or equal to a first temperature threshold value X; and if yes, when the instant freezing chamber is not in the supercooling keeping state, the chamber air supply outlet is controlled to be opened. And the air cooling device supplies air to the instant freezing chamber through the air supply outlet so as to cool air in the heat radiation wall and the instant freezing chamber, so that the air in the instant freezing chamber quickly returns to the supercooling keeping state again. After the heat radiation wall is cooled by the supplied air of the air cooling device, the cooling efficiency of the air in the freezing chamber is enhanced, so that the instant freezing chamber can quickly enter and maintain a supercooling keeping state. The supercooling introduction period is short, the energy consumption is low, the food can quickly enter a supercooling keeping state, and the preservation effect is good.

A refrigerator and a control method thereof, the refrigerator having a freezing chamber in which a detachable automatic ice-making unit, a blow-out port, and a flash freezing line are provided, the automatic ice-making unit having an ice-making tray and a driving motor to rotate the ice-making tray, the blow-out port allowing gas passing through an evaporator to flow toward the ice-making tray, the flash freezing line being installed in a detachable state to a detached area when the automatic ice-making unit is detached; the flash freezing line including a housing, an insertion port provided on the housing and opposite to the blow-out port, or having the ice-making line with the blow-out port inserted into the insertion port such that the blow-out port is located inside the housing, a cooling fan provided inside the housing to increase a flow rate of the gas flowing into the housing from the blow-out port and discharge the gas, and an air outlet provided on the housing to allow the gas discharged from the cooling fan to flow toward an outside of the housing.

The seed crystal chamber 142 may be located closer to the cold plate 112 than the mold chamber 137. The seed crystal chamber 142 may facilitate formation of a seed ice crystal from which the clear ice may form. By taking advantage of the lower thermal conductivity of water as compared to ice or aluminum, the seed crystal chamber 142 may further discourage the water in the mold chamber 137 from sub cooling and flash freezing as the seed crystal is being formed. Flash freezing occurs when water is subcooled below its freezing point and then exposed to an ice crystal, which causes the subcooled water to rapidly freeze. The seed crystal chamber 142 may promote directional freezing in the mold chamber 137, which promotes clear ice. Thermal conductivity of ice is higher than that of water, which may facilitate freezing from the seed crystal chamber 142 up through the mold chamber 137 once the seed crystal is formed.

The application discloses a self-adaptive temperature zoning control system and method for a flash freezing device, relates to the technical field of intelligent temperature control of the flash freezing device, and is used for solving the problems of uneven temperature control, abrupt adjustment of adjacent zones and insufficient adaptability in the freezing process. The freezing treatment area is divided into multiple temperature zones along the conveying direction of the object to be frozen. The air temperature, supply air temperature, return air temperature, surface temperature of the object to be frozen, conveying speed and zone coverage rate are collected. The temperature demand value, heat load characteristic value and temperature trend determination value are calculated. The target adjustment temperature and self-adaptive adjustment amount are generated. The adjacent zone boundary state is coordinately controlled. According to the adjustment result, the correlation coefficient is feedback corrected. The self-adaptive, continuous and refined control of the flash freezing process is realized.