US3822567A - Refrigerating apparatus - Google Patents

Refrigerating apparatus Download PDF

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Publication number
US3822567A
US3822567A US00327102A US32710273A US3822567A US 3822567 A US3822567 A US 3822567A US 00327102 A US00327102 A US 00327102A US 32710273 A US32710273 A US 32710273A US 3822567 A US3822567 A US 3822567A
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United States
Prior art keywords
oil
compressor
condenser
refrigerant
liquid
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 - Lifetime
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US00327102A
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English (en)
Inventor
K Kasahara
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.)
Mayekawa Manufacturing Co
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Mayekawa Manufacturing Co
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Publication date
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    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • ABSTRACT This invention relates to a refrigerating apparatus.
  • Said apparatus comprises a compressor of the oil injection system, a condenser containing a liquid refrigerant, a line connecting an outlet port of said compressor to said condenser, an evaporator, a line connecting an upper portion of a liquid sump in said condenser to said evaporator, 21 line connecting said evaporator to a suction port of said compressor, an oil sump formed in a bottom portion of said condenser,
  • Said refrigerant in a high pressure gaseous state from said compressor is injected together with oil into said liquid refrigerant so as to effect condensation of the refrigerant gas, separation of the refrigerant from the oil and cooling of the oil in said condenser.
  • This invention relates to refrigerating apparatus comprising a compressor of the oil injection system, and more particularly it is concerned with a refrigerating apparatus of the type described in which condensation of a refrigerant, separation of oil from the refrigerant and cooling of the oil take place in the. condenser.
  • Conventional refrigerating apparatus of the oil injection system are constructed such that, in the refrigeration cycle, a suitable refrigerant gas is compressed in a compressor and discharged therefrom in a gaseous state together with oil, the oil is separated from the refrigerant in a gaseous state by means of an oil separator, the gas is passed through a condenser where it gives off heat and changes into a liquid state, the liquid is stored in a liquid sump from which it is passed through an evaporator to absorb heat and change the refrigerant back to a gaseous state for compressing in the compressor to complete the refrigeration cycle.
  • the oil separated from the refrigerant in a gaseous state by means of the oil separator is cooled by an oil cooler before being returned to and injected into the compressor.
  • the oil separaton oil cooler and liquid sump are independent parts, so that the apparatus have the disadvantage of being large in overall size and complex in construction.
  • an object of the invention is to provide a refrigerating apparatus of the oil injection system which obviates the aforementioned disadvantages of the prior art by eliminating the oil separator, oil cooler and liquid sump.
  • Another object of the invention is to provide a refrigerating apparatus of the oil injection system wherein a refrigerant in a liquid state is stored in the condenser and the refrigerant gas under high pressure from the compressor is injected together with oil into the refrigerant in a liquid state in the condenser whereby condensation of the refrigerant gas, separation of the oil from the refrigerant gas and cooling of the oil can be effected in the condenser.
  • FIG. 1 is a vertical sectional side view of the condenser of the refrigerating apparatus according to this invention
  • FIG. 2 is a vertical sectional front view of the condenser of the refrigerating apparatus according to the invention
  • FIG. 3 is a flow diagram of the refrigerating apparatus according to the invention.
  • Y FIG. 4 is a flow diagram of a conventional refrigerating apparatus.
  • a condenser 4 shown in FIG. 3 is connected to one end of a higher pressure gas line 3 which is connected at the other end to an outlet port 2 of a compressor 1 -of the oil injection system.
  • a liquid line 6 connected at one end to an upper portion of a liquid sump 5 is connected at the other end to an evaporator 8 throughan expansion valve7, and a lower pressure gas line 9 connected at one end to the evaporator 8 is connected at the other end to a suction port 10 of the compressor 1.
  • a cooling water line 11 of the shell and tube type is inserted in an upper portion of the condenser 4.
  • the one end of the higher pressure gas line 3 is maintained in communication with gas injection pipes 12 immersed in the liquid in the liquid sump 5 and each formed therein with a large number of small gas injection openings 13 disposed in spaced apart relationship as shown in FIG. 1 and FIG. 2.
  • Wire mesh demisting plates 14 and 15 are mounted above and below the gas injection pipes 12.
  • An oil sump 17 having an upper opening covered with a porous plate 16 projects downwardly from the bottom of the condenser 4 and connected to one end of an oil line 18 which is connected at the other end to an oil injection'port 19 of the compressor 1.
  • higher pressure gas ejected through the outlet port 2 of the compressor 1 is introduced together with oil through the higher pressure gas line 3 into the gas injection pipes 12 in the liquid sump 5 of the condenser 4, and injected through the small openings 13 into the refrigerant in a liquid state in the liquid sump 5.
  • the higher pressure gas which is maintained at about C in the higher pressure gas line 3 is injected'into the liquid at about 35C and scattered therein, so that oil in the gas is cooled by the liquid and at the same time moves downwardly and separates itself from the refrigerant in a liquid state due to the difference in specific gravity, so that. the oil is sedimented below the liquid.
  • the interior of the condenser 4 is cooled by cooling water of about 20C circulating through the water line 11, so that the gas which remains in un-condensed state is cooled and condensed into a liquid by the water line 11 disposed above theliquid.
  • the plates 14 and 15 mounted above and below the gas injection pipes 12 are thoroughly cooled in the liquid, so that the oil in the injected gas is caught by the plates 14 and 15 and moves downwardly in droplets from the plates 14 and 15 without being incorporated in the liquid.
  • the lower plate 15 further performs the function of preventing disturbance of the oil-liquid interface by preventing agitation of the lower portion of the liquid which might otherwise be caused by the injection of gas.
  • the refrigerant in a liquid state in the liquid sump 5 is supplied through the liquid line 6 from the upper portion of the sump 5 to the evaporator 8 where the refrigerant is changed back into a gaseous state and passed to the suction port 10 of the compressor 1.
  • the oil in the oil sump 17 is supplied through the oil line 18 to the oil injection port 19 of the compressor 1.
  • the oil may be supplied to the compressor 1 by the differential pressure between the condenser 4 and compressor 1 or by means of an oil pump mounted in the oilline 18.
  • the refrigerating apparatus according to the invention is constructed and operated such that the liquid stays in'the condenser and higher pressure gas is in- 6O jected together with oil from the compressor into the liquid for effecting condensation of the refrigerant and separation of the refrigerant from the oil and cooling of the oil in the single condenser.
  • the apparatus according to the invention is more simple in construction and operation than the conventional refrigerating apparatus shown in FIG. 4 in which an oil separator 20, oil,
  • cooler 21 and higher pressure liquid sump 22 are mounted separately because these devices as well as 3 lines connecting them together can be done without and the condenser has only to be controlled.
  • the elimination ofoil cooler ofiers the additional advantage of the loss of pressure injected into the compressor being reduced.
  • a refrigerating apparatus comprising a compressor of the oil injection system, a condenser containing a liquid refrigerant, a line connecting an outlet port of said compressor to said condenser, an evaporator, a line connecting an upper portion of a liquid sump in said condenser to.
  • said evaporator a lineconnecting said evaporator to a suction port of said compressor, an oil sump formed in a bottom portion of said condenser, a line connecting said oil sump to an oil injection port of said compressor, and means to inject said refrigerant in a high pressure gaseous state from said compressor together with oil into said liquid refrigerant so as to effect condensation of the refrigerant gas, separation of the refrigerant from the oil and cooling of the oil in said condenser.
  • said means to inject comprises at least one gas injection pipe immersed in the liquid in said liquid sump and connected to the outlet port of said compressor through said line, said gas injection pipe being formed therein with a number of small gas injection openings.
  • a refrigerating apparatus as set forth in claim 2 further comprising at least one wire mesh demisting plate disposed above said gas injection pipe.
  • a refrigerating apparatus as set forth in claim 2 further comprising at least one wire mesh demisting plate disposed below said gas injection pipe.
  • a refrigerating apparatus as set forth in claim 2 further comprising a plurality of wire mesh demisting plates disposed above and below said gas injection pipe.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)
US00327102A 1972-02-21 1973-01-26 Refrigerating apparatus Expired - Lifetime US3822567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47017822A JPS5114298B2 (enrdf_load_stackoverflow) 1972-02-21 1972-02-21

Publications (1)

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US3822567A true US3822567A (en) 1974-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00327102A Expired - Lifetime US3822567A (en) 1972-02-21 1973-01-26 Refrigerating apparatus

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US (1) US3822567A (enrdf_load_stackoverflow)
JP (1) JPS5114298B2 (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604593A4 (en) * 1991-09-19 1994-08-17 Mayer Holdings Sa Thermal inter-cooler.
US5568736A (en) * 1991-09-19 1996-10-29 Apollo Environmental Systems Corp. Thermal inter-cooler
EP0898127A3 (en) * 1997-08-19 2000-03-22 Mitsubishi Denki Kabushiki Kaisha Refrigerating/air-conditioning apparatus
EP1046526A3 (en) * 1999-04-23 2002-06-19 Mitsubishi Heavy Industries, Ltd. Air condenser, coolant system, and on vehicle air conditioning system
EP1293736A1 (de) * 2001-09-13 2003-03-19 Behr GmbH & Co. Kältesystem zur Klimatisierung eines Fahrzeuges und Kühleinrichtung zum Einsatz in einem derartigen Kältesystem
ITMI20100429A1 (it) * 2010-03-16 2011-09-17 Climaveneta S P A Impianto di produzione di energia termo frigorifera e metodo di ottimizzazione della sua efficienza
WO2012068250A1 (en) * 2010-11-16 2012-05-24 Zahid Hussain Ayub Thin film evaporator
WO2013032611A3 (en) * 2011-08-26 2013-04-25 Carrier Corporation Refrigerant vaporizer
WO2013131522A1 (en) * 2012-03-09 2013-09-12 Danarctica Aps Cooling system and a method for separation of oil
CN103499167A (zh) * 2013-10-23 2014-01-08 武汉新世界制冷工业有限公司 压缩机制冷循环系统中的余热回收式油分离器
US11867440B2 (en) 2018-06-02 2024-01-09 Carrier Corporation Water-cooled heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822060Y2 (ja) * 1978-01-23 1983-05-11 株式会社日立製作所 冷凍機用凝縮器
CN104833139B (zh) * 2015-05-29 2017-11-17 珠海格力电器股份有限公司 一种换热设备及其内置油分离系统的冷凝器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620713A (en) * 1924-02-05 1927-03-15 Fred C Bell Combination condenser and oil separator
US1834136A (en) * 1928-03-19 1931-12-01 Apex Electrical Mfg Co Means for lubricating refrigeration systems
US1835081A (en) * 1926-07-26 1931-12-08 Pollard Frederic Augustin Refrigerating machine
US2618132A (en) * 1948-08-30 1952-11-18 Jr Francis Marion Pottenger Refrigeration system with refrigerant cleaning means
US3201949A (en) * 1963-08-22 1965-08-24 Vilter Manufacturing Corp Refrigerating apparatus with oil separator means
US3274796A (en) * 1965-09-23 1966-09-27 Vilter Manufacturing Corp Refrigeration system with lube oil separation means
US3534564A (en) * 1968-11-06 1970-10-20 Bruce D Miller Refrigerant purifying means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620713A (en) * 1924-02-05 1927-03-15 Fred C Bell Combination condenser and oil separator
US1835081A (en) * 1926-07-26 1931-12-08 Pollard Frederic Augustin Refrigerating machine
US1834136A (en) * 1928-03-19 1931-12-01 Apex Electrical Mfg Co Means for lubricating refrigeration systems
US2618132A (en) * 1948-08-30 1952-11-18 Jr Francis Marion Pottenger Refrigeration system with refrigerant cleaning means
US3201949A (en) * 1963-08-22 1965-08-24 Vilter Manufacturing Corp Refrigerating apparatus with oil separator means
US3274796A (en) * 1965-09-23 1966-09-27 Vilter Manufacturing Corp Refrigeration system with lube oil separation means
US3534564A (en) * 1968-11-06 1970-10-20 Bruce D Miller Refrigerant purifying means

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604593A4 (en) * 1991-09-19 1994-08-17 Mayer Holdings Sa Thermal inter-cooler.
US5568736A (en) * 1991-09-19 1996-10-29 Apollo Environmental Systems Corp. Thermal inter-cooler
EP0898127A3 (en) * 1997-08-19 2000-03-22 Mitsubishi Denki Kabushiki Kaisha Refrigerating/air-conditioning apparatus
EP1046526A3 (en) * 1999-04-23 2002-06-19 Mitsubishi Heavy Industries, Ltd. Air condenser, coolant system, and on vehicle air conditioning system
EP1293736A1 (de) * 2001-09-13 2003-03-19 Behr GmbH & Co. Kältesystem zur Klimatisierung eines Fahrzeuges und Kühleinrichtung zum Einsatz in einem derartigen Kältesystem
ITMI20100429A1 (it) * 2010-03-16 2011-09-17 Climaveneta S P A Impianto di produzione di energia termo frigorifera e metodo di ottimizzazione della sua efficienza
EP2366967A1 (en) * 2010-03-16 2011-09-21 Climaveneta S.p.A. Plant for the production of thermo-frigorific energy and method for the optimization of its efficiency
EP2641036A4 (en) * 2010-11-16 2016-08-17 Zahid Hussain Ayub THIN-FILM EVAPORATOR
CN102959346B (zh) * 2010-11-16 2015-11-25 扎黑德·胡赛恩·阿优伯 薄膜蒸发器
CN102959346A (zh) * 2010-11-16 2013-03-06 扎黑德·胡赛恩·阿优伯 薄膜蒸发器
WO2012068250A1 (en) * 2010-11-16 2012-05-24 Zahid Hussain Ayub Thin film evaporator
US9746220B2 (en) * 2011-08-26 2017-08-29 Carrier Corporation Refrigerant vaporizer
CN103827604A (zh) * 2011-08-26 2014-05-28 开利公司 制冷剂蒸馏器
US20140174112A1 (en) * 2011-08-26 2014-06-26 Carrier Corporation Refrigerant Vaporizer
CN103827604B (zh) * 2011-08-26 2016-10-05 开利公司 制冷剂蒸馏器
WO2013032611A3 (en) * 2011-08-26 2013-04-25 Carrier Corporation Refrigerant vaporizer
EP3637025A1 (en) * 2011-08-26 2020-04-15 Carrier Corporation Refrigerant vaporizer cross-reference to related applications
US20150052915A1 (en) * 2012-03-09 2015-02-26 Danarctica Aps Cooling system and a method for separation of oil
US9091470B2 (en) * 2012-03-09 2015-07-28 Danarctica Aps Cooling system and a method for separation of oil
WO2013131522A1 (en) * 2012-03-09 2013-09-12 Danarctica Aps Cooling system and a method for separation of oil
EA028786B1 (ru) * 2012-03-09 2017-12-29 Данарктика Апс Охлаждающая система и способ отделения масла
CN103499167B (zh) * 2013-10-23 2015-09-09 武汉新世界制冷工业有限公司 压缩机制冷循环系统中的余热回收式油分离器
CN103499167A (zh) * 2013-10-23 2014-01-08 武汉新世界制冷工业有限公司 压缩机制冷循环系统中的余热回收式油分离器
US11867440B2 (en) 2018-06-02 2024-01-09 Carrier Corporation Water-cooled heat exchanger

Also Published As

Publication number Publication date
JPS4887448A (enrdf_load_stackoverflow) 1973-11-17
JPS5114298B2 (enrdf_load_stackoverflow) 1976-05-08

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