Patent ID: 6055814
Filing Date: 2000-05-02
Classification: F24F,F25B,H05K

Abstract:
An operating system comprising:a housing having an opening therethrough, said housing constituting a boundary past which physical objects are prevented from entering the housing from outside the housing;a plurality of operating units disposed in said housing, said plurality of units generating heat when operating;a temperature sensor which detects the temperature inside of said housing;a Peltier module mounted in said opening and hermetically sealed therein to said housing, said Peltier module having a cooling chip having a first surface facing the inside of said housing and a second surface facing the outside of said housing, said cooling chip comprising two dissimilar metals contacting each other at a junction and producing a Peltier effect when electric current passes through said junction, the Peltier effect causing said first surface of the cooling chip to absorb heat and said second surface of the chip to radiate heat when the electric current flows through said junction in one direction, whereby air in a region adjacent said first surface is cooled;a fan having a variable speed motor and disposed in said housing for forcing the air in said region throughout the interior of said housing; anda control module including a common source of electric power to which said fan and said Peltier module are connected in parallel, said control module being operatively connected to said temperature sensor so as to compare the temperature detected by said temperature sensor with a predetermined reference temperature, and to supply the cooling chip of said Peltier module with a direct current flowing in said one direction and the variable speed motor of said fan with current in an amount proportional to that supplied to the cooling chip when the detected temperature is higher than said predetermined reference temperature.