WO2012113049A1 - Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system - Google Patents
Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system Download PDFInfo
- Publication number
- WO2012113049A1 WO2012113049A1 PCT/BR2012/000043 BR2012000043W WO2012113049A1 WO 2012113049 A1 WO2012113049 A1 WO 2012113049A1 BR 2012000043 W BR2012000043 W BR 2012000043W WO 2012113049 A1 WO2012113049 A1 WO 2012113049A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor
- condenser
- heat exchanger
- tube
- cooling system
- Prior art date
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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F25B31/006—Cooling of compressor or motor
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/04—Desuperheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
Definitions
- compressors Due to their operation characteristics, compressors usually constitute the hottest part of a refrigeration system, the temperature thereof being a function of room temperature where the system is located.
- the inner temperature of compressors have limits that may be extrapolated in case of the room temperature being too high; besides, the operation temperature of the compressor also influences bearing design that will be used therewith - and which should be submitted to harsh approval tests in order to endure the operation under such conditions.
- a large part of the compressor inefficiency is associated with the consequent coolant gas overheating during its path between the suction valve and the compression cylinder, as well as with the coolant heating during its compression.
- the heating of the coolant through the suction path is caused by heat exchanges with the compressor components, which are hotter than the coolant fluid.
- the coolant heating in the compression process mainly occurs due to the addition of work imposed by piston and also, due to a heat part from the cylinder walls at the early stages of compression.
- Document JP5209596 describes a rotatory-type compressor having an element named "precooler” to cool the compressed gas that exits the compressor and to redirect it back to the inside thereof even through directing reducing the compressor inner temperature through said gas having the temperature attenuated - which presents limitations in efficiency, due to the high temperature reached by the equipment during operation.
- document US5439358 describes the use of gas recirculation ducts associated with a manifold having a plurality of heat exchangers that, however, do not effectively attenuate the temperature of the air compressor from which part the air to such ducts.
- the presented system further provides the existence of an outer heat exchanger, wrapped on the compressor, which is very effective due to evaporative process of two-phase fluid and to the mechanism of heat exchange by conduction in the component to be cooled. Therefrom, it is established the surface temperature of the compressor (and therefore of the internal components thereof) close to the pre-condenser saturation temperature, enabling the compressor operation for high room temperatures.
- said outer heat exchanger comprises tubes fastened around the compressor or micro compressor shell.
- the present invention further comprises a compressor equipped with a cooling system that contains: a compressor or micro compressor comprised of a shell within which it is located a compression cylinder, whereas from the shell it is projected an inlet tube from an evaporator and a discharge tube which conducts the fluid into a condenser; at least one pre- condenser associated with the compressor, the pre-condenser being fed by a tubing from the compression cylinder located within the compressor, and equipped with an outlet tube; and a heat exchanger internal to the outer region of the compressor and cooperative with the pre- condenser through the outlet tube of the pre-condenser.
- FIG. 2 - shows a diagram schematically illustrating a refrigeration system built in accordance with the preferred embodiment of the present invention illustrated in Figure 1.
- Figure 5 - shows an elevated view having a partial longitudinal cut of an alternative embodiment of the compressor provided from the refrigeration system, which is additionally equipped with an inner heat exchanger coupled to the compressor cylinder cap.
- Figure 6 shows a partial transverse cross-sectional and schematic view of Figure 5 showing a second possible embodiment for the invention, in which the inner heat exchanger is coupled to the compressor cylinder.
- the compressor cooling system using a heat exchanger and a pre-condenser that is the object of this invention is comprised of: a compressor 1 associated with a pre-condenser 7, and a heat exchanger 91 located in the shell 2 of the compressor 1 and cooperative with the pre-condenser 7.
- the heat exchanger 91 consists of pipes arranged around the compressor or micro compressor 1 shell, coating it totally or partially.
- compressor 1 coated by the heat exchanger 91 will have a low temperature which is close to the condensation temperature, due to the evaporative heat exchange occurring in pipes 91 arranged around the compressor 1.
- Such additional inner heat exchanger 9 preferably should be positioned within the shall 2 close to a hot part of the compressor 1 , the inner heat exchanger 1 receiving the fluid from a pre-condenser 7 through a spring-tube 10 connected to the end of the outlet tube 11 of the pre-condenser 7, and conducts the fluid therein processed into the discharge tube 6 through an output spring-tube 12.
- FIG. 6 Another embodiment of the present invention is presented in Figure 6, in which the additional inner heat exchanger 9 is coupled to the cap 4 of the compression cylinder 3, when available (noticing that micro compressors do not present an inner cap).
- the system of the present invention utilizes the gas itself that is compressed and pumped by the compressor 1 in order to transport heat from inside the compressor 1 into the external environment.
- the gas used follows its path in the compressor 1 through the cap 4 of the compression cylinder 3, discharge filters, discharge pipe and finally the discharge tube 6 into the condenser (not shown).
- the compressed gas rejects heat to the external environment through the pre-condenser 7, in which the coolant is brought to the saturation zone.
- the coolant temperature - which now can be considered diphase - at the end of the pre-condenser 7 is the own condensation temperature of the refrigeration system.
- the coolant when exiting the heat exchanger 7 with a lower energy degree (enthalpy), returns to the compressor 1 and is conducted through the pipes 91 along all outer surface of the shell 2 of the compressor 1.
- the diphase coolant then exchanges sensitive and latent heat with the heated body of the compressor, reducing the temperature thereof. After accomplishing the heat exchange, this fluid is directed to the discharge tube 6 which then configures the interface of compressor 1 with the other components of the refrigeration system.
- the pre-condenser 7 allows maintaining the surface temperature of the compressor very close to the system condensation temperature, something that is hard to achieve just by means of ventilation.
- the compressed fluid exits the compressor 1 through the tubing 8, rejects heat in the pre-condenser or outer heat exchanger 7, and returns to the compressor 1 through the outlet tube 11 of the pre-condenser 7.
- the cooled fluid is conducted through a spring-tube 10 into the inner heat exchanger 9 coupled to the compression cylinder 3.
- the fluid is sent through another spring-tube 12 into the discharge tube 6 - which is the interface in which the compressed fluid is delivered to the condenser or the refrigeration system.
- the inner heat exchanger 9 can be coupled to the cap 4 (when available) of the compression cylinder 3.
- the compressed fluid exits the compressor 1 through the feed tubing (pipe) 8 of the pre- condenser 7, rejects heat in the pre-condenser 7, and returns to the compressor 1 through the tube 11.
- the cooled fluid is conducted through a spring-tube 10 into the inner heat exchanger 9 coupled to the cap 4 of the compression cylinder 3.
- the fluid is directed through another spring-tube 12 into the discharge tube 6 that conducts the compressed fluid into the condenser of the refrigeration system.
- the benefits of using compressor cooling system using the pre-condenser 7 that is the object of this invention are related to reliability and energy efficiency aspects.
- the cooling of the hot parts of compressor 1 caused by the proposed system avoids critical temperatures in which the existing oil in compressor 1 could suffer from degradation and irreversible changes in the thermal-physical properties thereof.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137022728A KR20140027933A (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system |
US14/000,989 US20140044569A1 (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system |
JP2013554755A JP2014507625A (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger precondenser and compressor provided from the cooling system |
CN201280017646.XA CN103635760A (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger pre-condenser, and compressor provided with cooling system |
EP12748837.7A EP2678618A1 (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI1100416-9 | 2011-02-22 | ||
BRPI1100416-9A2A BRPI1100416A2 (en) | 2011-02-22 | 2011-02-22 | COMPRESSOR COOLING SYSTEM USING PRE-CONDENSER, AND COMPRESSOR PROVIDED OF COOLING SYSTEM |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2012113049A1 true WO2012113049A1 (en) | 2012-08-30 |
WO2012113049A9 WO2012113049A9 (en) | 2013-10-31 |
WO2012113049A8 WO2012113049A8 (en) | 2013-12-12 |
Family
ID=46720039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2012/000043 WO2012113049A1 (en) | 2011-02-22 | 2012-02-16 | Compressor cooling system using heat exchanger pre-condenser, and compressor provided from a cooling system |
Country Status (9)
Country | Link |
---|---|
US (1) | US20140044569A1 (en) |
EP (1) | EP2678618A1 (en) |
JP (1) | JP2014507625A (en) |
KR (1) | KR20140027933A (en) |
CN (1) | CN103635760A (en) |
AR (1) | AR085897A1 (en) |
BR (1) | BRPI1100416A2 (en) |
TW (1) | TW201250185A (en) |
WO (1) | WO2012113049A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105240246A (en) * | 2015-11-18 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Air cylinder seat, compressor, refrigerating system and refrigerator |
WO2017158755A1 (en) * | 2016-03-16 | 2017-09-21 | 三菱電機株式会社 | Heat pump apparatus |
CN108088104B (en) * | 2017-11-23 | 2020-07-03 | 中科美菱低温科技股份有限公司 | Self-adjusting intelligent refrigerating system |
WO2020057826A1 (en) * | 2018-09-17 | 2020-03-26 | Arcelik Anonim Sirketi | A compressor comprising a suction muffler |
CN110374836B (en) * | 2019-06-12 | 2021-04-20 | 同济大学 | Constant temperature electronic water pump |
CN114483538B (en) * | 2022-01-07 | 2024-01-26 | 淮北矿业股份有限公司 | Diesel locomotive air compressor capable of preventing engine oil from emulsifying |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0061349A2 (en) * | 1981-03-25 | 1982-09-29 | Thomas H. Hebert | Precool/subcool thermal transfer system and method, and condenser therefor |
US4936112A (en) * | 1987-08-03 | 1990-06-26 | Rotocold Limited | Gas compressors |
EP0652123A1 (en) * | 1993-11-05 | 1995-05-10 | VECO S.r.l. | Refrigerating system with auxiliary compressor-cooling device |
US20030192338A1 (en) * | 2002-04-10 | 2003-10-16 | Shailesh Manohar | Method for increasing efficiency of a vapor compression system by compressor cooling |
EP1462739A2 (en) * | 2003-03-27 | 2004-09-29 | Sanyo Electric Co., Ltd. | Refrigerant cycle apparatus |
US20080078204A1 (en) * | 2006-10-02 | 2008-04-03 | Kirill Ignatiev | Refrigeration system |
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CA584954A (en) * | 1954-07-01 | 1959-10-13 | Westinghouse Electric Corporation | Motor pump unit |
GB1028315A (en) * | 1961-11-28 | 1966-05-04 | Rotax Ltd | Alternators |
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-
2011
- 2011-02-22 BR BRPI1100416-9A2A patent/BRPI1100416A2/en not_active IP Right Cessation
-
2012
- 2012-02-16 KR KR1020137022728A patent/KR20140027933A/en not_active Application Discontinuation
- 2012-02-16 WO PCT/BR2012/000043 patent/WO2012113049A1/en active Application Filing
- 2012-02-16 JP JP2013554755A patent/JP2014507625A/en active Pending
- 2012-02-16 US US14/000,989 patent/US20140044569A1/en not_active Abandoned
- 2012-02-16 EP EP12748837.7A patent/EP2678618A1/en not_active Withdrawn
- 2012-02-16 CN CN201280017646.XA patent/CN103635760A/en active Pending
- 2012-02-22 AR ARP120100586A patent/AR085897A1/en not_active Application Discontinuation
- 2012-02-22 TW TW101105880A patent/TW201250185A/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0061349A2 (en) * | 1981-03-25 | 1982-09-29 | Thomas H. Hebert | Precool/subcool thermal transfer system and method, and condenser therefor |
BR8207287A (en) * | 1981-03-25 | 1983-03-29 | Thomas H Hebert | SYSTEM FOR PRE-COOLING AND UNDER-COOLING AND CONDENSER FOR IT |
US4936112A (en) * | 1987-08-03 | 1990-06-26 | Rotocold Limited | Gas compressors |
EP0652123A1 (en) * | 1993-11-05 | 1995-05-10 | VECO S.r.l. | Refrigerating system with auxiliary compressor-cooling device |
US20030192338A1 (en) * | 2002-04-10 | 2003-10-16 | Shailesh Manohar | Method for increasing efficiency of a vapor compression system by compressor cooling |
EP1462739A2 (en) * | 2003-03-27 | 2004-09-29 | Sanyo Electric Co., Ltd. | Refrigerant cycle apparatus |
US20080078204A1 (en) * | 2006-10-02 | 2008-04-03 | Kirill Ignatiev | Refrigeration system |
Also Published As
Publication number | Publication date |
---|---|
WO2012113049A8 (en) | 2013-12-12 |
JP2014507625A (en) | 2014-03-27 |
EP2678618A1 (en) | 2014-01-01 |
WO2012113049A9 (en) | 2013-10-31 |
US20140044569A1 (en) | 2014-02-13 |
TW201250185A (en) | 2012-12-16 |
AR085897A1 (en) | 2013-11-06 |
KR20140027933A (en) | 2014-03-07 |
CN103635760A (en) | 2014-03-12 |
BRPI1100416A2 (en) | 2013-12-03 |
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