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A directional flow control or reversing valve for use within a thermodynamic system wherein a working fluid is cycled through a closed-loop fluid circuit having refrigeration elements including a first heat exchanger or coil, a second heat exchanger or coil coupled in series to the first heat exchan

A directional flow control or reversing valve for use within a thermodynamic system wherein a working fluid is cycled through a closed-loop fluid circuit having refrigeration elements including a first heat exchanger or coil, a second heat exchanger or coil coupled in series to the first heat exchanger, and a compressor having a high pressure discharge side and a low pressure suction side. The control valve includes distribution and check valving elements that are operable for selectively directing the flow of fluid from the compressor discharge side to the first or second heat exchanger and, respectively, the compressor suction side to the second or first heat exchanger for the reversible operation of the system in alternate heating and cooling modes. The valve includes a housing which is formed as having internal chambers for receiving the valving elements, and fluid ports which open into the housing as couplable in fluid communication with the refrigeration elements of the fluid circuit.

대표청구항 ▼

[ What is claimed is:] [1.] A valve for directing the flow of a working fluid therethrough comprising:a housing having a first internal chamber extending along a first longitudinal axis and a second internal chamber extending along a second longitudinal and couplable in fluid communication with said

[ What is claimed is:] [1.] A valve for directing the flow of a working fluid therethrough comprising:a housing having a first internal chamber extending along a first longitudinal axis and a second internal chamber extending along a second longitudinal and couplable in fluid communication with said first internal chamber by, selectively, a first and a second fluid flow path through said housing, said housing having an inlet port opening into said first chamber, an outlet port opening into said second chamber, and first and second reversing ports, said first reversing port being couplable in fluid communication with said inlet port by said first fluid flow path and with said outlet port by a third fluid flow path through said housing, and said second reversing port being couplable in fluid communication with said inlet port by said second fluid flow path and with said outlet port by a fourth fluid flow path through said housing;a distribution valving element slidably received within said first chamber for reciprocating movement along said first longitudinal axis intermediate said first upper and lower valve seats between a first distribution position opening said first fluid flow path and closing said second fluid flow path, and a second distribution position opening said second fluid flow path and closing said first fluid flow path; anda check valving element freely slidably received within said second chamber for reciprocating movement along said second longitudinal axis between a first check position opening said fourth fluid flow path and closing said third fluid flow path, and a second check position opening said third fluid flow path and closing said fourth fluid flow path, said check valving element being responsive to fluid flow within said first fluid flow path to move from said second to said first check position, and being responsive to fluid flow in said second fluid flow path to move from said first to said second check position.