Refrigerant outlet device of a condenser

A heat exchanger, comprising:

• a shell having a bottom, the shell defining a space;
• and
• a refrigerant outlet on the bottom of the shell,
• the refrigerant outlet includes:
• an outflow pipe;
• an outer wall surrounding the outflow pipe, the outflow pipe and an outside surface of the outer wall define an annular weir surrounding the outflow pipe;
• and
• a port on the outer wall in fluid communication with the annular weir to direct liquid lubricating refrigerant out of the annular weir and through the port to provide lubrication to a compressor,
• wherein the annular weir has a bottom, the port has a lowest point, the lowest point of the port is positioned higher than the bottom of the annular weir, the outflow pipe has a first end and a second end, the first end of the outflow pipe is positioned inside the shell, the annular weir has an opening on the bottom of the shell, the opening is in fluid communication with the space and in fluid communication with the port, and the first end of the outflow pipe is positioned higher than the opening of the annular weir.

A heat exchanger, comprising:

• a shell having a bottom, the shell defining a space;
• and
• a refrigerant outlet on the bottom of the shell,
• the refrigerant outlet includes:
• an outflow pipe;
• an outer wall surrounding the outflow pipe, the outflow pipe and an outside surface of the outer wall define an annular weir surrounding the outflow pipe;
• and
• a single port on the outer wall in fluid communication with the annular weir to direct liquid lubricating refrigerant out of the annular weir and through the port to provide lubrication to a compressor,
• wherein the port has a lowest point, the annular weir has a bottom, the lowest point of the port is positioned higher than the bottom of the annular weir,
• the outflow pipe has a first end and a second end, the first end of the outflow pipe is positioned inside the shell,
• the annular weir has an opening in fluid communication with the space and in fluid communication with the port,
• the first end of the outflow pipe is positioned higher than the opening of the annular weir,
• the outflow pipe is in fluid communication with the space,
• the outflow pipe and the annular weir are configured so that liquid lubricating refrigerant is first directed from the space into the annular weir before liquid lubricating refrigerant is directed to the outflow pipe through the first end of the outflow pipe.