2 results about "Flash Freeze" patented technology

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 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.