Pressure pulsation traps

A heating, ventilation, and/or air conditioning (HVAC) system, comprising:

• a compressor that compresses a fluid comprising a refrigerant and a lubricant, wherein the compressor comprises a compressor discharge of a mixed fluid comprising refrigerant and lubricant;
• and
• a pressure pulsation trap coupled to the compressor discharge that receives the mixed fluid, the pressure pulsation trap comprising:
• a channel extending from an inlet to an outlet;
• and
• a plurality of branches extending from the channel, each of the branches comprising:
• a first, open end;
• a fixed, closed end;
• and a rigid wall extending from the first, open end to the fixed, closed end, wherein the rigid wall defines a length for each branch, and the inner surface of the rigid wall defines an inner diameter for each branch;
• wherein each branch has a different length than one another,
• wherein the first, open end is in fluid communication with the channel and has the same inner diameter as the inner diameter of the rigid wall;
• wherein the rigid wall has the same inner diameter from the first, open end to the fixed, closed end,
• wherein the different lengths equal ¼ or ½ of different wavelengths of pressure pulsations to be attenuated within a range of frequencies at which the compressor is configured to operate, and
• wherein the channel is arranged substantially vertically, and the plurality of branches extend away from the channel in a direction that is both horizontal and vertical for at least a portion of the branch length such that lubricant from the plurality of branches returns to the channel and to the inlet under the force of gravity.