A storage plant for storing objects at the temperature of liquid nitrogen comprises a plurality of storage tanks arranged in a cooled chamber. A nitrogen withdrawal apparatus is provided to carry off evaporated nitrogen directly from the storage tanks before it can enter the chamber. The pressure in the storage tanks is kept below the pressure in the chamber.

The invention relates to a process of freezing an organic product using a freezing device. The process includes introducing an organic product inside a tank of the freezing device containing a freezing solvent set to a predefined temperature. The freezing solvent is an alcohol/aqueous based solution including at least one inhibitor. Nitrogen is passed in a form of bubbles into the freezing solvent through a gas permeable structure placed inside the tank. The freezing solvent is circulated from the tank, through a liquid transmission means and back into the tank using a pump to maintain the freezing solvent at the predefined temperature. The freezing solvent is agitated using at least one agitator placed within the tank. The steps of passing nitrogen, circulating and agitating the freezing solvent are performed until a core temperature of the organic product reaches the predefined temperature.

The present disclosure provides cryogenic storage systems and methods of using the cryogenic storage systems. A cryogenic storage system of the present disclosure may comprise a cryogenic tank with an inner door and an outer door, and a robot apparatus located adjacent to the cryogenic tank. The cryogenic tank may store multiple racks such that at most a single rack is removable through the inner door or the outer door. The cryogenic tank may store the multiple racks in multiple groups of racks comprising a first group of racks located at a first radial distance and a second group of racks located at a second radial distance that is greater than the first radial distance. The robot apparatus may selectively open and close the inner or outer doors, and insert or withdraw the single rack into or out of the cryogenic tank through the inner door or the outer door.

A cooling system for a cryochamber comprises compressors, heat exchangers and flow restrictions. Compressors are used to pressurize the working fluid, heat exchangers are used to release the heat to the ambient, absorb heat from the interior of the cryochamber to decrease the temperature inside the cryochamber, to cool the working fluid below the ambient temperature using source of cold or to recuperate heat of the cold working fluid stream. Flow restrictions are used to decrease the pressure of the working fluid which results in its temperature decrease. Cryochambers are used for whole-body cryotherapy and require cooling systems that are able to lower the air temperature inside the cryochamber to −90° F.

A cooler box with a temperature control function, the cooler box comprises a box body and a cryogenic medium container installed outside the cooler box for storing liquid carbon dioxide or other liquefied gas. The box body is equipped with a controller, a monitoring device, a controllable valve, and a chamber to reduce the speed of gas released and thus prevent sudden freezing and overcooling of temperature-sensitive cargo such as fresh food. The controllable valve is connected to the cryogenic medium container through a tube. The monitoring device measures the temperature inside the cooler box, and the controller controls the valve opening state and the duration time of maintaining the open state of the controllable valve according to the temperature measured by the monitoring device and the size of the cooler box. A temperature control method for the cooler box is also provided.

A freezer includes a plurality of shelves in an insulated payload bay; a plurality of evaporators coupled to the payload bay with a multiplicity of coolant tubes in each evaporator, wherein each tube enters and then exits the payload bay, further comprising one or more cryogenic valves coupled to the coolant tubes; a pump to force coolant flowing through the evaporators with a pressure of at least 90 psi to supply the coolant at each evaporator with at least 20 gallons per hour of coolant; and a plurality of fans to circulate cooled air in the payload bay.

The present disclosure provides cryogenic storage systems and methods of using the cryogenic storage systems. A cryogenic storage system of the present disclosure may comprise a cryogenic tank with an inner door and an outer door, and a robot apparatus located adjacent to the cryogenic tank. The cryogenic tank may store multiple racks such that at most a single rack is removable through the inner door or the outer door. The cryogenic tank may store the multiple racks in multiple groups of racks comprising a first group of racks located at a first radial distance and a second group of racks located at a second radial distance that is greater than the first radial distance. The robot apparatus may selectively open and close the inner or outer doors, and insert or withdraw the single rack into or out of the cryogenic tank through the inner door or the outer door.

A cryogenic device for storing biological material containers comprises: a sealed cryogenic Dewar vessel; (b) a matrix of receptacles disposed in an inner space of the cryogenic Dewar vessel and configured for receiving and storing biological material containers; (c) means for loading and retrieving the biological material containers. The loading/retrieving means comprises a telescopic cane manipulator configured for loading and retrieving the biological material containers within the matrix. The receptacles are carried by a carousel member rotatable around an axis thereof. The receptacles are arranged into a number of groups distributed over the carousel member. Each group of the receptacles has a central point positioned at distance R.sub.1 from the rotation axis of the carousel member. a center of each receptacle within the group is positioned around a central point thereof at distance R.sub.2.

A plant for continuously cooling foodstuffs includes a container suitable to receive such foodstuffs continuously moved by a movement member and refrigerant apparatus for cooling such foodstuffs during the movement thereof, the movement member being a pump; the plant includes a spiral duct preferably arranged around the container wherein the pump continuously directs and moves the foodstuffs to be cooled and in which there is directed a cryogenic fluid, along at least two different turns of the spiral duct there being arranged apparatus for injecting of the cryogenic fluid.

A spirally ascending/descending cryogenic storage apparatus, comprising a cryogenic storage tank, the temperature in the cryogenic storage tank being continuously maintained at a certain deep cryogenic range. A driving component and a rotating storage rack are provided within the cryogenic storage tank. Multiple shelf boxes can be stored in the circumferential direction of the rotating storage rack. The driving component can drive the rotating storage rack to spirally ascent or spirally descent in the cryogenic storage tank. An access opening is provided on the cryogenic storage tank. The multiple shelf boxes can rotate to a position corresponding to the access opening with the movement of the rotating storage rack. The cryogenic storage tank is a liquid nitrogen tank. Liquid nitrogen is provided at the bottom part within the liquid nitrogen tank.