Sanitary concentric tube heat exchanger

A sanitary concentric tube heat exchanger for heating or cooling flowable or pumpable products, comprising:

• a first tube for receiving a heating or cooling medium, said first tube having first and second ends which provide a medium inlet and a medium outlet;
• a second tube disposed about and concentric with said first tube for receiving a flowable or pumpable product, said second tube having first and second ends which provide a product inlet and a product outlet;
• a securing clamp located at the first end of said second tube for securing said first end of said second tube to said first tube;
• a seal assembly located at the second end of said second tube for sealing said second end of said second tube to said first tube;
• a third tube disposed about and concentric with said second tube, said third tube having first and second ends which provide a medium inlet and a medium outlet, and with the medium inlet and medium outlet of said third tube being in tubular form and extending perpendicular to the longitudinal axis of said third tube;
• wherein the product outlet of the second tube is in tubular form and having an angled portion which extends toward said clamp at the first end of said second tube and the product inlet of the second tube is in tubular form and having an angled portion which extends toward said seal assembly at the second end of said second tube, with each of said product inlet and product outlet having a portion extending radially outwardly of said angled portions which is perpendicular to the longitudinal axis of said second tube;
• and wherein the medium inlet of said third tube and the product inlet of said second tube are located on the same side of the longitudinal axis of said heat exchanger and with the medium outlet of said third tube and the product outlet of said second tube being located on the opposite side of the longitudinal axis of said heat exchanger, thus providing a symmetrical shape to facilitate interconnection of a plurality of said heat exchangers in series.