GROUND FREEZING DEVICE Russian patent published in 1998 - IPC

FIELD: construction machinery and equipment. SUBSTANCE: ground freezing device has tubular condenser provided with stiffening ribs. Connected to condenser is evaporator made in the form of tube which is plugged at bottom. Evaporator is filled with cooling agent. Tubular condenser is made up of two parts which are interconnected by indicator represented by flexible insert. Mounted on aforesaid insert is strip made of porous material. Tubular condenser is enclosed in housing which is open at top and bottom and has sight hole located in it at side of and against strip made of porous material. Provided in upper part of tubular condenser is filling pipe connection which is plugged after device is filled with cooling agent. Aforesaid embodiment allows for carrying out operational control during application of ground freezing device. EFFECT: higher efficiency. 3 dwg