Tank type heat exchanger is a compact, efficient performance of compact heat exchanger. Due to its entry into the market of the time not long, now belongs to the full potential of one of the two products. Compared with the traditional heat exchanger tank type heat exchanger of high heat transfer efficiency, small volume, easy flow of waterway, waterway waterway inlet in the bottom, easy drainage, and can effectively reduce the dirt. And tank type heat exchanger can be used as an evaporator and a condenser is used, also can be connected in parallel or in series combination is connected and piping, meet the requirements of large system. As a result of tank type heat exchanger internal helical structure design, to ensure the smooth and uniform flow rate of water, is not easy to appear the ice plugging and fouling, and tank type heat exchanger has the advantages of small volume, saves the space, facilitating a more reasonable arrangement structure of the system, to reduce the overall size, save the shell material volume, for the future refrigeration market development trend is in place, so the potential will be released slowly.