EP 0012895 A1 19800709 - Centrifugal vapor compressor and a diffuser control therefor.
Title (en)
Centrifugal vapor compressor and a diffuser control therefor.
Title (de)
Zentrifugaldampfverdichter und Kontrolle seines Diffusors.
Title (fr)
Compresseur centrifuge de vapeur et contrÔle de son diffuseur.
Publication
Application
Priority
- US 97340478 A 19781226
- US 97340578 A 19781226
Abstract (en)
A diffuser control (26) for controlling vapor flow through a diffuser passage (16) comprising an annular recess (28) defined by a housing (12) of the diffuser passage (16) and in communication therewith, and an annular control ring (30) supported for movement within the recess (28) and the diffuser passage (16) between a throttling position, wherein the control ring (30) throttles vapor flow through the diffuser passage (16), and an open position for permitting a substantially free flow of vapor through the diffuser passage (16). The diffuser control (26) further comprises a plurality of springs (32) supported by the housing (12) for urging the control ring (30) toward the throttling position, a stop (34) for limiting movement of the control ring (30) at the throttling position, a low pressure conduit (38) for connecting the annular recess (28) to a low pressure source, and a steal (42, 44) for retarding vapor flow from a higher pressure side of the control ring (30) to a lower pressure side thereof when the control ring (30) is in the open position. A valve (40) is provided for regulating vapor flow through the low pressure conduit (38) and includes a first position for maintaining a low pressure in the annular recess (28) and a pressure difference across the control ring (30) for maintaining the control ring (30) in the open posiiton, and a second position for maintaining a high pressure in the annular recess (28) wherein the springs (32) maintain the control ring (30) in the throttling position.
IPC 1-7
IPC 8 full level
F04D 27/02 (2006.01); F01D 17/14 (2006.01); F04D 27/00 (2006.01); F04D 29/46 (2006.01)
CPC (source: EP)
F01D 17/143 (2013.01); F04D 29/462 (2013.01); F04D 29/464 (2013.01); F05D 2250/51 (2013.01); F05D 2250/52 (2013.01)
Citation (search report)
- US 3426964 A 19690211 - SILVERN DAVID H
- US 3032259 A 19620501 - KURT JASSNIKER
- GB 1146575 A 19690326 - MANNESMANN MEER AG
Designated contracting state (EPC)
CH DE FR GB IT
DOCDB simple family (publication)
EP 0012895 A1 19800709; EP 0012895 B1 19830907; CA 1119140 A 19820302; DE 2966146 D1 19831013; JP S5921100 U 19840208; JP S6218719 Y2 19870513
DOCDB simple family (application)
EP 79104971 A 19791206; CA 340937 A 19791129; DE 2966146 T 19791206; JP 7362683 U 19830517