Apparatus and method for thermoelectric cooling of an extraction fluid pump

A pumping system for fluid extraction comprising:

• a pumphead block having pumphead block walls;
• inlet means including tubing walls through which extraction fluid flows;
• said inlet means communicating with said pumphead block wherein extraction fluid flows through said inlet means into the pumphead block;
• means for connecting the inlet means to a source of extraction fluid;
• outlet means for providing the extraction fluid from said pumphead block to a pressure vessel;
• an air-cooled thermoelectric-cooled heat exchanger means for cooling both the inlet means and the pumphead block;
• said air-cooled thermoelectric-cooled heat exchanger means including first heat exchanger means and second heat exchanger means;
• said first heat exchanger means being positioned in juxtaposition with said inlet means wherein extraction fluid is cooled before the extraction fluid reaches said second heat exchanger means;
• said second heat exchanger means being positioned in juxtaposition with said pumphead block wherein said second heat exchanger removes heat from said extraction fluid after said first heat exchanger means has removed heat from said extraction fluid;
• said first heat exchanger having a first thermoelectric element with a first side and a second side;
• the first side of said first thermoelectric element being in heat-conducting contact with said extraction fluid through said tubing walls and said second side of said first thermoelectric element being in heat conducting contact with air through solid heat conducting first heat exchanger walls;
• said solid heat-conducting first heat exchanger walls being free of liquid cooling passageways and having an air cooled surface;
• said second heat exchanger having a second thermoelectric element with a first side and second side;
• said first side of said second thermoelectric element being in heat-conducting contact with said extraction fluid through said pumphead block walls and said second side of said second thermoelectric element being in heat conducting contact with air through solid heat conducting second heat exchanger walls;
• said solid heat-conducting second heat exchanger walls being free of liquid cooling passageways and having an air cooled surface wherein said pumping system does not use a cooling liquid.