WO2007142619B1 - Multi-stage compressor unit for a refrigeration system - Google Patents

Multi-stage compressor unit for a refrigeration system

Info

Publication number
WO2007142619B1
WO2007142619B1 PCT/US2006/021123 US2006021123W WO2007142619B1 WO 2007142619 B1 WO2007142619 B1 WO 2007142619B1 US 2006021123 W US2006021123 W US 2006021123W WO 2007142619 B1 WO2007142619 B1 WO 2007142619B1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
compressor
stage
sub
refrigerant
Prior art date
Application number
PCT/US2006/021123
Other languages
French (fr)
Other versions
WO2007142619A3 (en
WO2007142619A2 (en
Inventor
James W Bush
Wayne P Beagle
Biswajit Mitra
Original Assignee
Carrier Corp
James W Bush
Wayne P Beagle
Biswajit Mitra
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
Application filed by Carrier Corp, James W Bush, Wayne P Beagle, Biswajit Mitra filed Critical Carrier Corp
Priority to US12/308,016 priority Critical patent/US20090175748A1/en
Priority to CN2006800548113A priority patent/CN101460789B/en
Priority to PCT/US2006/021123 priority patent/WO2007142619A2/en
Priority to EP06771733A priority patent/EP2021703A4/en
Priority to JP2009513113A priority patent/JP5028481B2/en
Publication of WO2007142619A2 publication Critical patent/WO2007142619A2/en
Publication of WO2007142619A3 publication Critical patent/WO2007142619A3/en
Publication of WO2007142619B1 publication Critical patent/WO2007142619B1/en
Priority to HK09111531.4A priority patent/HK1133918A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant comprises a first compressor sub-unit having a first stage and a second stage, and a second compressor sub-unit in parallel with the first compressor sub-unit and having a first stage. The first and second stages of the first compressor sub-unit each have a suction port and a discharge port. The first compressor sub-unit is configured to receive and compress a first portion of the refrigerant from an evaporator. The first stage of the second compressor sub-unit is configured to compress a second portion of the refrigerant.

Claims

AMENDED CLAIMS received by the International Bureau on 09 June 2008 (09.06.09)
1. A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant, the multi-stage compressor unit comprising: a first compressor sub-unit having a first stage and a second stage, wherein the first and second stages of the first compressor sub-unit each have a suction port and a discharge port, and wherein the first compressor sub-unit is configured to receive and compress a first portion of the refrigerant from an evaporator; and a second compressor sub-unit in parallel with the first compressor sub-unit and having a first stage, wherein the first stage of the second compressor sub- unit has a suction port and a discharge port, and wherein the second compressor sub-unit is configured to compress a second portion of the refrigerant prior to the compressed second portion being combined with the compressed first portion.
2. The multi-stage compressor unit of claim 1, wherein the first stage of the second compressor sub-unit is configured to receive the second portion of the refrigerant from a second evaporator.
3. The multi-stage compressor unit of claim 1, wherein the first stage of the second compressor sub-unit is configured to receive the second portion of the refrigerant from a first economizer circuit.
4. The multi-stage compressor unit of claim 3, wherein the first compressor sub-unit further comprises an interstage port disposed between the discharge port of the first stage and the suction port of the second stage, and wherein the interstage port is configured to receive a third portion of the refrigerant from a second economizer circuit.
5. The multi-stage compressor unit of claim 1, wherein the first compressor sub-unit and the second compressor sub-unit comprise reciprocating compressors.
6. The multi-stage compressor unit of claim 1, wherein the refrigerant is a transcritical refrigerant.
7. The multi-stage compressor unit of claim 1, and further comprising an intercooler configured to cool the first portion of the refrigerant between the first and second stages of the first compressor sub-unit.
8. The multi-stage compressor unit of claim 1, wherein the second compressor sub-unit is configured to discharge into an interstage port of the first compressor sub-unit.
9. The multi-stage compressor unit of claim 1, wherein the second compressor sub-unit further comprises a second stage having a suction port and a discharge port, and wherein the first and second stages of the second compressor sub-unit are connected in series.
10. A multi-stage compressor unit for a refrigeration system having a first economizer circuit and configured to circulate a refrigerant, the multi-stage compressor unit comprising: a first compressor sub-unit having a first stage and a second stage, wherein the first compressor sub-unit is configured to receive and compress a first portion of the refrigerant from an evaporator, and a second compressor sub-unit in parallel with the first compressor sub-unit, wherein the second compressor sub-unit is configured to compress a second portion of the refrigerant from the first economizer circuit prior to the compressed second portion being combined with the compressed first portion.
11. The multi-stage compressor unit of claim 10, and further comprising an intercooler configured to cool the first portion of the refrigerant between, the first and second stages of the first compressor sub-unit.
12. The multi-stage compressor unit of claim 10, wherein the first compressor sub-unit is configured to discharge refrigerant at a first exit pressure, and wherein the second compressor sub-unit is configured to discharge refrigerant at a second exit pressure.
13. The multi-stage compressor unit of claim 12, wherein the first and second exit pressures are substantially equivalent.
14. The multi-stage compressor unit of claim 10, wherein the first compressor sub-unit further comprises an interstage port disposed between the first and second stages and configured to receive a third portion of the refrigerant from a second economizer circuit, and wherein the second stage of the first compressor sub-unit is configured to compress a mixture of the first and third portions of the refrigerant.
15. The multi-stage compressor unit of claim 10, wherein the second compressor sub-unit is a single-stage compressor.
16. The multi-stage compressor unit of claim 10, wherein the second compressor sub-unit is a two-stage compressor.
17. The multi-stage compressor unit of claim 16, wherein the second compressor sub-unit further comprises an interstage port configured to receive a fourth portion of the refrigerant from a third economizer circuit.
18. A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant, the multi-stage compressor unit comprising: a first compressor sub-unit having a first stage, a second stage, and an interstage port disposed between the first and second stages, wherein the first stage of the first compressor sub-unit is configured to compress a first portion of the refrigerant to an intermediate pressure, and wherein the second stage of the first compressor sub-unit is configured to compress the first portion of the refrigerant to an exit pressure of the first compressor sub-unit; and a second compressor sub-unit having a first stage, wherein the second compressor sub-unit is configured to compress a second portion of the refrigerant to an exit pressure of the second compressor sub-unit prior to the compressed second portion being combined with the compressed first portion.
19. The multi-stage compressor unit of claim 18, wherein the exit pressures of the first compressor sub-unit and the second compressor sub-unit are substantially equivalent.
20. The multi-stage compressor unit of claim 18, wherein the second compressor sub-unit discharges the second portion of the refrigerant into the interstage port of the first compressor sub-unit, and wherein the exit pressure of the second compressor sub-unit is substantially equivalent to the intermediate pressure of the first compressor sub-unit.
PCT/US2006/021123 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system WO2007142619A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/308,016 US20090175748A1 (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for refrigeration system
CN2006800548113A CN101460789B (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system
PCT/US2006/021123 WO2007142619A2 (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system
EP06771733A EP2021703A4 (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system
JP2009513113A JP5028481B2 (en) 2006-06-01 2006-06-01 Multistage compressor unit for refrigeration system
HK09111531.4A HK1133918A1 (en) 2006-06-01 2009-12-09 Multi-stage compressor unit for a refrigeration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/021123 WO2007142619A2 (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system

Publications (3)

Publication Number Publication Date
WO2007142619A2 WO2007142619A2 (en) 2007-12-13
WO2007142619A3 WO2007142619A3 (en) 2008-08-28
WO2007142619B1 true WO2007142619B1 (en) 2008-10-09

Family

ID=38801929

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/021123 WO2007142619A2 (en) 2006-06-01 2006-06-01 Multi-stage compressor unit for a refrigeration system

Country Status (6)

Country Link
US (1) US20090175748A1 (en)
EP (1) EP2021703A4 (en)
JP (1) JP5028481B2 (en)
CN (1) CN101460789B (en)
HK (1) HK1133918A1 (en)
WO (1) WO2007142619A2 (en)

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Also Published As

Publication number Publication date
HK1133918A1 (en) 2010-04-09
EP2021703A4 (en) 2012-02-15
JP5028481B2 (en) 2012-09-19
CN101460789A (en) 2009-06-17
WO2007142619A3 (en) 2008-08-28
US20090175748A1 (en) 2009-07-09
JP2009539058A (en) 2009-11-12
CN101460789B (en) 2011-01-26
EP2021703A2 (en) 2009-02-11
WO2007142619A2 (en) 2007-12-13

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