System and method for directing fluid flow in a compressor
AssigneeJohnson Controls Tyco IP Holdings LLP
InventorsPaul William Snell, Bryson Lee Sheaffer, Florin Valeriu Iancu
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Abstract
A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system includes an impeller that has a hub defining an impeller tip, a plurality of blades coupled to the hub and defining a plurality of flow paths configured to direct a primary flow of working fluid therethrough, and a shroud coupled to the plurality of blades. The shroud includes a shroud tip disposed upstream of the impeller tip relative to a flow direction of the primary flow of working fluid through the plurality of flow paths.
Claims20
A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system, comprising:
- an impeller, comprising:
- a hub defining an impeller tip;
- a plurality of blades coupled to the hub, wherein the plurality of blades defines a plurality of flow paths configured to direct a primary flow of working fluid therethrough;
- and
- a shroud coupled to the plurality of blades, wherein the shroud comprises a shroud tip disposed upstream of the impeller tip relative to a flow direction of the primary flow of working fluid through the plurality of flow paths.
A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system, comprising:
- an impeller, comprising:
- a hub comprising a first radial tip;
- a plurality of blades extending from the hub and defining a plurality of flow paths configured to direct a primary flow of working fluid therethrough;
- and
- a shroud coupled to the plurality of blades and comprising a second radial tip disposed upstream of the first radial tip of the hub relative to a first flow direction of the primary flow of working fluid through the plurality of flow paths;
- a compressor housing, wherein the impeller is disposed within the compressor housing, and the compressor housing comprises a working fluid flow path extending therethrough and configured to receive a vapor working fluid from an economizer and direct the vapor working fluid into the plurality of flow paths;
- and
- a plurality of vanes disposed within the working fluid flow path, wherein the plurality of vanes is configured to adjust a second flow direction of the vapor working fluid through the working fluid flow path.
A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system, comprising:
- a housing comprising a vapor working fluid flow path extending therethrough, wherein the vapor working fluid flow path is configured to receive a vapor working fluid from an economizer of the HVAC&R system;
- an impeller disposed within the housing, wherein the impeller comprises:
- a plurality of blades defining a plurality of flow paths configured to direct a primary flow of working fluid therethrough, wherein each blade of the plurality of blades comprises a first tip;
- and
- a shroud coupled to the plurality of blades and comprising a second tip disposed upstream of the first tip of each blade of the plurality of blades relative to a flow direction of the primary flow of working fluid through the plurality of flow paths;
- and
- a stationary vane disposed within the vapor working fluid flow path and configured to adjust a flow direction of the vapor working fluid upstream of the second tip of the shroud and direct the vapor working fluid into the plurality of flow paths downstream of the second tip of the shroud and upstream of the first tip of each blade of the plurality of blades.
Dependencies are inferred from the claim text.