Title:
METHOD FOR FREEZING GROUND USING THERMOCOUPLE AND FREEZING CYLINDER
Document Type and Number:
Japanese Patent JP2564744
Kind Code:
B2
Abstract:
PURPOSE: To facilitate control without a need to provide a large scale refrigerator.
CONSTITUTION: A module 20 is formed by combining a plurality of thermocouples, each of which comprises two kinds of thermionic elements 11, 12 and has characteristics such that a coupling electrode 14 at the joint of both elements absorbs heat in response to electric current from one of the elements 11, and the electrode 14 of the module 20 is connected to a heat- transfer heat-absorbing board 9 provided in the ground E in electrically insulated relationship. Each thermocouple of the module 20 is connected by means of a connecting electrode 15 and the electrode 15 is attached to the surface of a heat-transfer radiating board 18 in electrically insulated relationship. Electricity is fed to the electrode 14 of the module 20 from one of the elements 11 through the electrode 15 and refrigerant R is caused to flow along the rear side of the board 18 to keep the electrode 15 at a predetermined temperature, so that heat is absorbed from the electrode 14, thereby freezing the ground E.
Inventors:
TAKAGI KENJI
MIDORIKAWA HIROSHI
KIKUCHI TETSUKI
OOTA KATSUYA
MIDORIKAWA HIROSHI
KIKUCHI TETSUKI
OOTA KATSUYA
Application Number:
JP33137292A
Publication Date:
December 18, 1996
Filing Date:
December 11, 1992
Export Citation:
Assignee:
KAJIMA CONSTRUCTION CORP
International Classes:
E21D1/14; E02D19/14; E21D9/04; E21D9/06; F24F5/00; F25B21/02; F25B25/00; (IPC1-7): E21D1/14; E02D19/14; E21D9/04; E21D9/06
Attorney, Agent or Firm:
Reijiro Ichihigashi