Patent ID: 7967060
Filing Date: 2011-06-28
Classification: F25B,F28D,F28F

Abstract:
1. An evaporating heat exchanger comprising: a first header pipe; a second header pipe; an inlet chamber within the first header pipe, which inlet chamber has at a lower end of the first header pipe an area susceptible to liquid accumulation; an outlet chamber within either the first header pipe or the second header pipe; a multitude of channels extending between the first header pipe and the second header pipe and forming flow passages between the inlet chamber and to the outlet chamber; and a venturi device having a body defining an entrance for connection to a refrigerant input line, an exit communicating with the inlet chamber, a primary flow path extending from the entrance to the exit and including a venturi throat located upstream of the area susceptible to liquid accumulation in relation to the primary flow path, and an induced flow path extending from a side of the venturi throat to the area susceptible to liquid accumulation, whereby in operation of the heat exchanger liquid accumulated in the area susceptible to liquid accumulation will be drawn through the induced flow path and into the venturi for passage with primary flow through the primary flow path to the exit communicating with the inlet chamber.