DEVICE FOR CRYOGENIC FREEZING OF SOIL Russian patent published in 2006 - IPC B09C1/00 

FIELD: disposal of solid waste.

SUBSTANCE: device comprises vehicle provided with the tank filled with coolant, collector that is used for supplying coolant and is connected with the tank though a T-shaped hose having detachable branch pipes connected with the appropriate cooling chambers. The cooling chamber is made of a box whose open section faces the surface to be frozen and receives the collector for spraying the coolant. The outer walls of the chamber are provided with face and side flanges that form a closed space for circulating coolant. The chamber walls are provided with means for interconnecting the chambers.

EFFECT: enhanced efficiency and reduced coolant consumption.

2 cl, 5 dwg