DE2966146D1 - Centrifugal vapor compressor and a diffuser control therefor - Google Patents

Centrifugal vapor compressor and a diffuser control therefor

Info

Publication number
DE2966146D1
DE2966146D1 DE7979104971T DE2966146T DE2966146D1 DE 2966146 D1 DE2966146 D1 DE 2966146D1 DE 7979104971 T DE7979104971 T DE 7979104971T DE 2966146 T DE2966146 T DE 2966146T DE 2966146 D1 DE2966146 D1 DE 2966146D1
Authority
DE
Germany
Prior art keywords
control ring
diffuser
diffuser passage
low pressure
annular recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE7979104971T
Other languages
German (de)
Inventor
Phiroze Bandukwalla
Howard W Kirtland
Gordon L Mount
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/973,404 external-priority patent/US4257733A/en
Priority claimed from US05/973,405 external-priority patent/US4219305A/en
Application filed by Carrier Corp filed Critical Carrier Corp
Application granted granted Critical
Publication of DE2966146D1 publication Critical patent/DE2966146D1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/143—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path the shiftable member being a wall, or part thereof of a radial diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

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.
DE7979104971T 1978-12-26 1979-12-06 Centrifugal vapor compressor and a diffuser control therefor Expired DE2966146D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/973,404 US4257733A (en) 1978-12-26 1978-12-26 Diffuser control
US05/973,405 US4219305A (en) 1978-12-26 1978-12-26 Diffuser control

Publications (1)

Publication Number Publication Date
DE2966146D1 true DE2966146D1 (en) 1983-10-13

Family

ID=27130568

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7979104971T Expired DE2966146D1 (en) 1978-12-26 1979-12-06 Centrifugal vapor compressor and a diffuser control therefor

Country Status (4)

Country Link
EP (1) EP0012895B1 (en)
JP (1) JPS5921100U (en)
CA (1) CA1119140A (en)
DE (1) DE2966146D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677956A5 (en) * 1986-07-02 1991-07-15 Carrier Corp
NZ220367A (en) * 1986-09-25 1991-05-28 Superstill Technology Inc Liquid seal for pump shaft: liquid is steam condensed from pump chamber
JP2751418B2 (en) * 1989-06-13 1998-05-18 ダイキン工業株式会社 Turbo compressor diffuser
GB9711892D0 (en) * 1997-06-10 1997-08-06 Holset Engineering Co Variable geometry turbine
CN104632712B (en) * 2013-11-21 2017-02-08 珠海格力电器股份有限公司 Turbo-machine and pressure expander thereof
CN107850087B (en) 2015-07-22 2020-08-04 开利公司 Diffuser confinement ring
US11560901B2 (en) * 2019-11-13 2023-01-24 Danfoss A/S Active unloading device for mixed flow compressors

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL224304A (en) * 1957-12-23
DE1503580A1 (en) * 1965-04-12 1970-06-11 Mannesmann Meer Ag Radial gyro machine with optimally adaptable flow cross-sections in the fixed part
US3426964A (en) * 1966-10-11 1969-02-11 Dresser Ind Compressor apparatus
JPS5229441B2 (en) * 1973-06-25 1977-08-02
JPS5092508A (en) * 1973-12-21 1975-07-24
JPS5115807A (en) * 1974-07-30 1976-02-07 Mitsubishi Heavy Ind Ltd ENSHINATSU SHUKUKI

Also Published As

Publication number Publication date
CA1119140A (en) 1982-03-02
EP0012895B1 (en) 1983-09-07
JPS6218719Y2 (en) 1987-05-13
JPS5921100U (en) 1984-02-08
EP0012895A1 (en) 1980-07-09

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee