公开(公告)号：JP2000307282A

公开(公告)日：2000-11-02

申请号：JP2000075070

申请日：2000-03-17

Applicant: IBM

Inventor： RICHARD C CHUU ,  GREGORY M CHRYSLER ,  ROBERT E SIMONS

IPC: F25B1/00 ,  F25B5/02 ,  H01L23/473 ,  H05K7/20

Abstract: PROBLEM TO BE SOLVED: To enable to operate a computer system at a low temperature by constituting a refrigerating means by connecting to a closed loop including a cold plate through an enclosure by a refrigerant pipeline. SOLUTION: An enclosure 10 is provided with a component, i.e., a module covered by a cold plate 50 and is in thermal contact with it. The cold plate 50 is connected to an air-refrigerant heat exchanger 60 by a refrigerant pipeline 25. The pipeline is diverted from a flow through the cold plate 50 to allow a refrigerant to flow through the air-refrigerant heat exchanger 60, and a blower 70 blows air at both ends of the heat exchanger. Then, the refrigerant is cooled in the air-heat exchanger 60, and is circulated over a plurality of chips 42 to cool them. Thus, a computer system can be operated at a low temperature.

公开(公告)号：JP2000294706A

公开(公告)日：2000-10-20

申请号：JP2000075052

申请日：2000-03-17

Applicant: IBM

Inventor： RICHARD C CHUU ,  GREGORY M CHRYSLER

IPC: F25B39/02 ,  F25B43/00 ,  H01L23/34 ,  H01L23/427 ,  H01L23/473 ,  H05K7/20

Abstract: PROBLEM TO BE SOLVED: To obtain a cooling device which can prevent cooling substance in a liquid state from returning to a compressor. SOLUTION: An auxiliary heat mechanism 20 functions to return a refrigerant in an evaporation type cooling plate 10 for an electronic module 40 to a compressor in a vapor state. Based on measured values of pressure and temperature of the refrigerant exiting from the cooling plate 10, a control unit controls ON and OFF operation of an electric-resistive auxiliary heating element 21 in order to compensate for a variation in heat dissipation caused in the module 40. Additional heat can be supplied by a single planar element or inline heating element. The auxiliary heating mechanism 20 prevents the refrigerant substance from returning to the compressor which adversely affects the life or operating efficiency of the compressor.