A PREVENTING SEPARATE CASING FOR OPEN TYPE GEOTHERMAL SYSTEM

摘要

The present invention relates to a casing apparatus for an open type underground geothermal exchanger to allow the flexible behavior and prevent deviation. A PVC casing inserted and installed in a geothermal drilling hole in the underground geothermal heat exchanger can be prevented from deviating from the place thereof due to contraction and expansion resulting from the difference between water temperatures during cooling and warming operations according to a linear expansion factor, so that underground water can be safely circulated. The casing apparatus for the open type underground geothermal exchanger to allow the flexible behavior and prevent deviation according to the present invention includes: at least two casings (2) installed in the geothermal drilling hole formed under the ground by the open type underground geothermal exchanger to divide an inner part of the geothermal drilling hole into a water feeding part and a water recovery part and having a hole positioned corresponding to a floor of the geothermal drilling hole so that underground water can be circulated; and an anti-deviation part coupled to a joint part between the casings (2) to prevent the casing (2) from deviating from the place thereof.