Patent ID: 9200627
Filing Date: 2015-12-01
Classification: F04B

Abstract:
1. Noise muffler for a refrigeration compressor, the muffler comprising at least one suction chamber, the suction chamber comprising at least one flow entry channel, the suction chamber comprising at least one flow exit channel, wherein the suction chamber comprises, inside, at least one cone-shaped directional duct, the directional duct being aligned straight with the flow entry channel and also being aligned straight with the flow exit channel and comprising at least one first end and at least one second end, the first end being larger than the second end, the first end being oriented toward the flow entry channel, the second end being oriented toward the flow exit channel, the cone-shaped directional duct comprising at least one cone-shaped flow control means disposed adjacent to the second end, the flow control means comprising a convex surface oriented toward the first end and a concave surface oriented toward the second end, the flow control means comprising a variable cross-section area, the variable cross-section area varying from a smaller cross-section area to a larger cross-section area, the smaller cross-section area being directed to the first end of the directional duct and the larger cross-section area being directed to the second end of the directional duct, the variable cross-section area being configured to form a constant opening angle from the smaller cross-section area to the greater cross-section area, the flow control means being configured to allow a preferred flow of refrigerant gas moving in a preferred flow direction from the flow entry channel of the suction chamber toward the flow exit channel of the suction chamber and configured to act as a flow deflector and reduce a non-preferred reflux flow of the refrigerant gas moving in a direction opposite the preferred flow direction from the flow exit channel of the suction chamber toward the flow entry channel of the suction chamber.