US20110041547A1 - Refrigeration circuit - Google Patents

Refrigeration circuit Download PDF

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Publication number
US20110041547A1
US20110041547A1 US12/990,261 US99026109A US2011041547A1 US 20110041547 A1 US20110041547 A1 US 20110041547A1 US 99026109 A US99026109 A US 99026109A US 2011041547 A1 US2011041547 A1 US 2011041547A1
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US
United States
Prior art keywords
refrigeration circuit
refrigerant
compressor
radical
circuit according
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.)
Abandoned
Application number
US12/990,261
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English (en)
Inventor
Shunji Komatsu
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.)
Sanden Corp
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20110041547A1 publication Critical patent/US20110041547A1/en
Assigned to SANDEN CORPORATION reassignment SANDEN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOMATSU, SHUNJI
Abandoned legal-status Critical Current

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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/126—Unsaturated fluorinated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/24—Only one single fluoro component present
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/18—Optimization, e.g. high integration of refrigeration components

Definitions

  • the present invention relates to a refrigeration circuit of an automotive air conditioning system which can be used safely even when a certain new-type refrigerant is utilized.
  • a refrigeration circuit used for an air conditioning system for vehicles has basic configuration as shown in FIG. 1 .
  • refrigeration circuit 1 is provided with compressor 2 for compressing refrigerant, condenser 4 for condensing compressed refrigerant, expansion valve 5 as a pressure-reduction/expansion means for reducing in pressure as expanding condensed refrigerant, and evaporator 6 for evaporating refrigerant which is reduced in pressure as being expanded.
  • the refrigerant is circulated in refrigeration circuit 1 as changing in state.
  • a typical refrigerant such as R134a, is used at present.
  • Non-patent document 1 Refrigeration, Vol. 83, No. 965, March issue, 2008
  • a conventional refrigerant such as R134a
  • R1234yf basic molecular structure of the new-type refrigerant R1234yf described above is CF3-CF ⁇ CH2, which includes a double bond.
  • This double bond consists of ⁇ bond and ⁇ bond, where the ⁇ bond is generally weak against attacks from the outside. If the ⁇ bond is destroyed, the double bond might be opened, and a macromolecule of —C—C—C—C . . . C— might be formed by a chain reaction. Once the macromolecule has been formed, refrigerant characteristics change greatly, and the performance of the refrigeration circuit might largely deteriorate.
  • Radicals such as Cl—, OH— and O3 is usually the main factor to destroy the double bond.
  • the radicals are generally hard to be formed.
  • the radical can be formed by high voltage in motor 3 , and the ⁇ bond of the new-type refrigerant R1234yf may be attacked to open the double bond, and a macromolecule of —C—C—C—C . . . C— may be formed.
  • an object of the present invention is to provide a refrigeration circuit, which can perform desirably by preventing or suppressing the radical generation to prevent from polymerization of R1234yf even when the new-type refrigerant R1234yf is used, especially when a refrigerant is replaced with the new-type refrigerant R1234yf and when the radical can be formed.
  • a refrigeration circuit is a refrigeration circuit comprising a compressor for compressing refrigerant, a condenser for condensing compressed refrigerant, a pressure reduction and expansion means for reducing in pressure and expanding condensed refrigerant, and an evaporator for evaporating pressure-reduced and expanded refrigerant, characterized in that R1234yf is used as a refrigerant for the refrigeration circuit, and a radical-capturing agent or a polymerization inhibitor is provided in the refrigeration circuit.
  • it can prevent the R1234yf polymerization by preventing or suppressing the radical generation, where the radical-capturing agent or the polymerization inhibitor is provided at a site, which is preferably the neighborhood of a site where the radical may be generated, in the refrigeration circuit.
  • a compressor is an electric compressor having a built-in motor for driving the compressor, for example.
  • the radical-capturing agent or the polymerization inhibitor is provided preferably at the neighborhood of a site where the high voltage is applied and the radical may be generated, in the electric compressor.
  • the R1234yf polymerization can be prevented by preventing or suppressing the radical generation.
  • the refrigeration circuit according to the present invention is applicable as any refrigeration circuit which may generate the radical and which may polymerize the R1234yf, as well as in the above-described case where the compressor is an electric compressor. Therefore, the present invention is applicable when the compressor is a compressor driven by an external drive source, or a belt-driven compressor which is driven by an external drive source, such as a vehicle engine, through a belt, etc., for transmitting the drive power.
  • the present invention makes it possible that the R1234 polymerization is prevented by preventing or suppressing the radical generation.
  • the compressor is preferably so-called hybrid compressor, as well as an electric compressor having a built-in motor for driving the compressor.
  • the compressor is a compressor comprising first compression mechanism and second compression mechanism, wherein the first compression mechanism is driven by an external drive source and the second compression mechanism is driven by a built-in motor, selectively or simultaneously.
  • Such a hybrid compressor can be included in the electric compressor for using a built-in motor as a drive source, if loosely categorized.
  • the radical-capturing agent or the polymerization inhibitor is provided in the refrigeration circuit by being provided on a surface of a member for forming a circuit inner surface which is brought into contact with the refrigerant.
  • the member for forming the circuit inner surface which is brought into contact with the refrigerant and on which the radical-capturing agent or the polymerization inhibitor is provided is specifically a member in the compressor, such as the electric compressor, the radical generation can be prevented or suppressed more efficiently in an circuit inner place where the radical is likely to generate by high voltage.
  • the radical-capturing agent or polymerization inhibitor is compounded in a material of the circuit inner surface-forming member which is brought into contact with the refrigerant. It is possible as well that the radical-capturing agent or polymerization inhibitor agent is provided on a surface of the circuit inner surface-forming member which is brought into contact with the refrigerant, by coating. Compounding it in the material of the circuit inner surface-forming member can be performed by using macromolecular material in which the radical-capturing agent or polymerization inhibitor is compounded. Providing it by coating can be performed by applying solution in which the radical-capturing agent or the polymerization inhibitor is solved or mixed in a proper solvent, which is removed.
  • the radical-capturing agent or polymerization inhibitor is provided in the refrigeration circuit by being contained in the refrigerant.
  • the R1234yf polymerization can be prevented by preventing or suppressing the radical generation as using the radical-capturing agent or polymerization inhibitor.
  • Such a refrigeration circuit according to the present invention is basically applicable for every refrigeration circuit which uses a belt-driven compressor (compressor driven by an external drive source) or a electric compressor which aim to use the new-type refrigerant R1234yf, and is specifically suitable for a refrigeration circuit of an automotive air conditioning system required to be driven efficiently and stably for a long term.
  • the refrigeration circuit according to the present invention makes it possible that the refrigeration circuit performs desirably by preventing or suppressing the radical generation to prevent from polymerization of R1234yf so as to make it possible to use the R1234yf stably, when the new-type refrigerant R1234yf is used and when the radical may be formed in the circuit and especially when an electric compressor to which high voltage is applied is used.
  • GWP Global Warming Potential
  • FIG. 1 is a schematic framework showing an example of a basic equipment layout of a refrigeration circuit as an object of the present invention.
  • the new-type refrigerant R1234yf can be characterized stably for a long term as preventing the R1234yf polymerization by preventing or suppressing the radical generation, where the radical-capturing agent or the polymerization inhibitor is provided at a site, which is preferably the neighborhood of a site where the radical may be generated in the refrigeration circuit, by mixing or coating with material, or by containing directly into the refrigerant.
  • the site where the radical may be generated is a site such as inside of an electric compressor or the neighborhood, where the radical might be generated by being applied with high voltage, but the present invention is applicable even for a belt-driven compressor (compressor driven by an external drive source).
  • the new-type refrigerant R1234yf polymerization can be prevented by applying the present invention to any site inside the refrigeration circuit.
  • the prevention of polymerization of the new-type refrigerant R1234yf can be achieved through the capture of the radical or by preventing the polymerization directly.
  • the radical-capturing agent or the polymerization inhibitor can be actually shown without distinction, because the ultimate target of both radical capturing and direct polymerization inhibition is to prevent from polymerizing the new-type refrigerant R1234yf.
  • a radical-capturing agent and a polymerization inhibitor in the present invention can be shown as follows.
  • the above-described radical-capturing agent or polymerization inhibitor is provided by any of the above embodiments in any site, which is specifically a site in the electric compressor or the neighborhood, inside refrigeration circuit 1 (refrigeration circuit 1 which comprises compressor 2 for compressing refrigerant, condenser 4 for condensing compressed refrigerant, expansion valve 5 as a pressure reduction and expansion means for reducing in pressure and expanding condensed refrigerant, and evaporator 6 for evaporating pressure-reduced and expanded refrigerant) as shown in FIG. 1 , when compressor 2 is an electric compressor incorporating built-in motor 3 , so that the new-type refrigerant R1234yf is prevented from polymerizing as preventing or suppressing the radical generation.
  • refrigeration circuit 1 which comprises compressor 2 for compressing refrigerant, condenser 4 for condensing compressed refrigerant, expansion valve 5 as a pressure reduction and expansion means for reducing in pressure and expanding condensed refrigerant, and evaporator 6 for evapor
  • the refrigeration circuit for a vehicle air-conditioning system is applicable basically for every refrigeration circuit where the new-type refrigerant R1234yf is used and the radical might be generated, and specifically suitable as a refrigeration circuit used for a vehicle air-conditioning system.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Air-Conditioning For Vehicles (AREA)
US12/990,261 2008-04-30 2009-04-27 Refrigeration circuit Abandoned US20110041547A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008118878A JP2009270727A (ja) 2008-04-30 2008-04-30 冷凍回路
JP2008-118878 2008-04-30
PCT/JP2009/058290 WO2009133859A1 (fr) 2008-04-30 2009-04-27 Circuit de congélation

Publications (1)

Publication Number Publication Date
US20110041547A1 true US20110041547A1 (en) 2011-02-24

Family

ID=41255075

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/990,261 Abandoned US20110041547A1 (en) 2008-04-30 2009-04-27 Refrigeration circuit

Country Status (5)

Country Link
US (1) US20110041547A1 (fr)
EP (1) EP2309205B1 (fr)
JP (1) JP2009270727A (fr)
CN (1) CN102016445A (fr)
WO (1) WO2009133859A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9347446B2 (en) 2013-04-17 2016-05-24 Mitsubishi Electric Corporation Refrigerant compressor including a polymerization inhibitor contained therein
US10544380B2 (en) 2015-03-30 2020-01-28 Idemitsu Kosan Co., Ltd. Refrigerator lubricating oil and mixed composition for refrigerator
US10808157B2 (en) 2008-11-03 2020-10-20 Arkema France Vehicle heating and/or air conditioning method
US10851275B2 (en) 2016-01-29 2020-12-01 Daikin Industries, Ltd. Refrigeration apparatus
US11661540B2 (en) 2016-01-29 2023-05-30 Daikin Industries, Ltd. Refrigeration apparatus

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2937906B1 (fr) * 2008-11-03 2010-11-19 Arkema France Procede de chauffage et/ou climatisation d'un vehicule.
WO2010098451A1 (fr) * 2009-02-26 2010-09-02 ダイキン工業株式会社 Composition de fluide frigorigène contenant de l'hydrofluoropropane à faible potentiel de réchauffement planétaire
JP2011179689A (ja) * 2010-02-26 2011-09-15 Hitachi Appliances Inc 冷凍サイクル装置
JP5466556B2 (ja) 2010-03-25 2014-04-09 出光興産株式会社 冷凍機用潤滑油組成物
EP2842928A4 (fr) * 2012-04-27 2017-11-08 Asahi Glass Company, Limited Procédé de conservation de tétrafluoropropène et récipient de conservation de tétrafluoropropène
JP6089913B2 (ja) * 2013-04-17 2017-03-08 三菱電機株式会社 冷媒圧縮機
JP5690912B2 (ja) * 2013-12-09 2015-03-25 出光興産株式会社 冷凍機用潤滑油組成物
JP7121319B2 (ja) * 2021-01-22 2022-08-18 ダイキン工業株式会社 冷凍装置
JP7453480B1 (ja) 2022-12-15 2024-03-19 三菱電機株式会社 冷凍サイクル装置および圧縮機

Citations (5)

* Cited by examiner, † Cited by third party
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US5059662A (en) * 1987-01-29 1991-10-22 Resene Products Company Method for producing ethylene copolymer
US5068130A (en) * 1990-10-23 1991-11-26 E. I. Dupont De Nemours And Company Inhibition of polymer formation on surfaces including vents by using an inhibitor paint
US6054064A (en) * 1994-07-11 2000-04-25 Solvay (Societe Anonyme) Refrigerant of 1,1-difluoroethylene
US20030167784A1 (en) * 2002-03-06 2003-09-11 Akiyoshi Higashiyama Two-stage compressor for an automotive air conditioner, which can be driven by a vehicle running engine and an electric motor different therefrom
US20070112227A1 (en) * 2004-04-29 2007-05-17 Honeywell International Inc. Method for producing fluorinated organic compounds

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JPH0959612A (ja) * 1995-08-30 1997-03-04 Matsushita Electric Ind Co Ltd トリフルオロイオドメタンを含む混合作動流体およびそれを用いた冷凍サイクル装置
JP2003042073A (ja) * 2001-05-22 2003-02-13 Denso Corp 車両用冷房装置
JP5122945B2 (ja) * 2004-04-16 2013-01-16 ハネウェル・インターナショナル・インコーポレーテッド テトラフルオロプロペンおよびトリフルオロヨードメタンの共沸混合物様組成物
EP1735401A1 (fr) * 2004-04-16 2006-12-27 Honeywell International Inc. Compositions de type azeotrope de difluoromethane et trifluoroiodomethane
JP5102952B2 (ja) * 2004-10-27 2012-12-19 株式会社豊田自動織機 摺動部材および摺動部材の製造方法
JP4927349B2 (ja) * 2005-05-11 2012-05-09 出光興産株式会社 冷凍機油組成物、これを用いた圧縮機及び冷凍装置
JP2007315663A (ja) * 2006-05-25 2007-12-06 Sanden Corp 冷凍装置
CA2661007A1 (fr) 2006-09-01 2008-03-06 E.I. Du Pont De Nemours And Company Methode de circulation de fluides de transfert de chaleur selectionnes dans un cycle a boucle fermee
FR2906877A1 (fr) * 2006-10-10 2008-04-11 Valeo Systemes Thermiques Organe de detente adapte pour un fluide refrigerant a base d'un melange comprenant du 1,1,1,2-tetrafluoropropene ("hfo-1234yf") et du trifluoroiodomethane ("cf31"

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5059662A (en) * 1987-01-29 1991-10-22 Resene Products Company Method for producing ethylene copolymer
US5068130A (en) * 1990-10-23 1991-11-26 E. I. Dupont De Nemours And Company Inhibition of polymer formation on surfaces including vents by using an inhibitor paint
US6054064A (en) * 1994-07-11 2000-04-25 Solvay (Societe Anonyme) Refrigerant of 1,1-difluoroethylene
US20030167784A1 (en) * 2002-03-06 2003-09-11 Akiyoshi Higashiyama Two-stage compressor for an automotive air conditioner, which can be driven by a vehicle running engine and an electric motor different therefrom
US20070112227A1 (en) * 2004-04-29 2007-05-17 Honeywell International Inc. Method for producing fluorinated organic compounds

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10808157B2 (en) 2008-11-03 2020-10-20 Arkema France Vehicle heating and/or air conditioning method
US9347446B2 (en) 2013-04-17 2016-05-24 Mitsubishi Electric Corporation Refrigerant compressor including a polymerization inhibitor contained therein
US10544380B2 (en) 2015-03-30 2020-01-28 Idemitsu Kosan Co., Ltd. Refrigerator lubricating oil and mixed composition for refrigerator
US10851275B2 (en) 2016-01-29 2020-12-01 Daikin Industries, Ltd. Refrigeration apparatus
US11352532B2 (en) 2016-01-29 2022-06-07 Daikin Industries, Ltd. Refrigeration apparatus
US11661540B2 (en) 2016-01-29 2023-05-30 Daikin Industries, Ltd. Refrigeration apparatus

Also Published As

Publication number Publication date
EP2309205A1 (fr) 2011-04-13
EP2309205A4 (fr) 2011-06-29
EP2309205B1 (fr) 2015-08-26
CN102016445A (zh) 2011-04-13
WO2009133859A1 (fr) 2009-11-05
JP2009270727A (ja) 2009-11-19

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AS Assignment

Owner name: SANDEN CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KOMATSU, SHUNJI;REEL/FRAME:026337/0363

Effective date: 20101208

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION