Patent ID: 7984638

Claim:
A gas chromatograph oven, comprising: a housing defining a capillary tube receiving space, the housing having at least one outlet port to permit the passage of a fluid from the capillary tube receiving space of the housing; at least one capillary tube positioned in the capillary tube receiving space of the housing, the at least one capillary tube having a gas inlet end connectable to a gas injector and a gas detector end connectable to a gas detector; and a thermal control assembly in fluid communication with the capillary tube receiving space of the housing, the thermal control assembly comprising a first tube having a heating element positioned therein and being connectable to a temperature regulating fluid source and a second tube connectable to a source of a cooling fluid; wherein the first tube is positioned external to the housing and connected to the housing such that upon passing temperature regulating fluid through the first tube and over the heating element the temperature regulating fluid is heated and the heated fluid passes into the capillary receiving space where the heated fluid circulates about the at least one capillary tube and passes from the housing through the at least one outlet port; and wherein the second tube is positioned external to the housing and connected to the housing such that cooling fluid is passed into the capillary receiving space upon passing the cooling fluid through the second tube where the cooling fluid circulates about the at least one capillary tube and passes from the housing through the at least one outlet port.