US2963886A - Lubricant cooling system - Google Patents
Lubricant cooling system Download PDFInfo
- Publication number
- US2963886A US2963886A US706630A US70663058A US2963886A US 2963886 A US2963886 A US 2963886A US 706630 A US706630 A US 706630A US 70663058 A US70663058 A US 70663058A US 2963886 A US2963886 A US 2963886A
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- US
- United States
- Prior art keywords
- lubricant
- evaporator
- compressor
- lubrication
- refrigerant
- 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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-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
Definitions
- This invention relates broadly to refrigeration systems. More particularly this invention pertains to an arrangement for efliciently cooling lubricant used to lubricate the various moving parts of the systems such as a compressor.
- the chief object of this invention is the provision of an economical and efficient lubrication cooling system for the lubricant used in a refrigeration system to lubricate those parts of the system requiring lubrication.
- Another object of the invention involves utilizing a portion of the evaporator that normally contributes little to the overall evaporator performance for the purpose of cooling the lubricant in the lubrication system.
- FIG. 1 is a diagrammatic representation of a refrigeration system, the lubrication circuit of which is cooled by virtue of a heat transfer action between the lubricant and a portion of the refrigerant in the evaporator.
- compressor normally forwards hot gaseous refrigerant through the line 11 to condenser 12. Liquefaction of the refrigerant in the condenser occurs by virtue of a heat transfer action between a medium passing over the outer surface of the condenser and the refrigerant within the condenser. Liquified refrigerant flows from the condenser through expansion valve 13 into evaporator 14 where it is converted to the vapor phase as air or any other medium flowing over the evaporator gives up its heat to the refrigerant. 'Ihe vaporous refrigerant then continues through suction line 15 to the compressor 10 to complete the circuit.
- Lubrication of the moving parts of the compressor is provided by a pump 20 having communication with the crankcase of the compressor.
- Lubricant flowing through the suction line of the pump is discharged through line 21 having a portion 22 in heat transfer relation with the return bends of the evaporator 14.
- the evaporator consists of a continuous tubular member comprising a plurality of spaced straight portions inter-connected at their ends by arcuate tubular members called return bends.
- the return bends on a normal evaporator coil of the type described are disposed outside of tube sheets which in effect support the continuous tubular member defined by the vertically spaced tube portions. In other words any extended surface is normally placed on that portion of the coil in which the parallel runs are located.
- This invention contemplates utilizing the prime surface of the return bends to effect a heat transfer action between the refrigerant flowing in the return bends and the lubricant flowing in the portion 22 of the line 21. This action serves to prevent sweating of the return bends.
- the cooled lubricant after it leaves that portion of line 21 in heat transfer relation with the evaporator return bends is forwarded under the action of the pump to the parts of the compressor requiring lubrication.
- the details of the part of the lubrication circuit disposed within the compressor have been deleted. However, it will be appreciated that the usual and normal reciprocating compressor is contemplated.
- a refrigeration system including a compressor, a lubrication system for the compressor, a condenser, refrigerant expansion means, and an evaporator comprising tubular means having substantially parallel portions interconnected by end portions to form a path of flow for the refrigerant, means for cooling the lubricant including a line, forming a part of the lubrication supply circuit, having a portion in heat transfer relation with the end portions of the evaporator.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
Dec. 13, 1960 E. P. PALMATIER LUBRICANT COOLING SYSTEM Filed Jan. 2, 1958 INVENTOR.
EVERETT P. PALMATIER BY ad! Lunnrcarrr CGOLING SYSTEM Everett P. Paimatier, Sovay, N.Y., assignor to Carrier (Iorporation, Syracuse, N.Y., a corporation of Delaware Filed Jan. 2, 1958, Ser. No. 706,630
1 Claim. (Cl. 62468) This invention relates broadly to refrigeration systems. More particularly this invention pertains to an arrangement for efliciently cooling lubricant used to lubricate the various moving parts of the systems such as a compressor.
As is necessary in any equipment that requires lubrication, cooling of the medium utilized as a lubricant is necessary. Heretofore it has been suggested that the lubricant employed in refrigeration systems having a reciprocating or centrifugal compressor as a component thereof, be cooled by inserting a heat transfer coil within the sump or crank case of the compressor. Under those circumstances where the supply of lubricant to the individual elements of the system requiring lubrication is under the influence of either an internally or an externally operated pump, I have found that the cooling of the lubricant can be effected efliciently and rapidly by routing a portion of the lubricant supply line over a portion of the evaporator so that a heat transfer action, resulting in a cooling of the lubricant, will occur.
The chief object of this invention is the provision of an economical and efficient lubrication cooling system for the lubricant used in a refrigeration system to lubricate those parts of the system requiring lubrication.
Another object of the invention involves utilizing a portion of the evaporator that normally contributes little to the overall evaporator performance for the purpose of cooling the lubricant in the lubrication system.
Other objects and features of the invention will be apparent upon a consideration of the ensuing specification and drawing wherein the figure is a diagrammatic representation of a refrigeration system, the lubrication circuit of which is cooled by virtue of a heat transfer action between the lubricant and a portion of the refrigerant in the evaporator.
Referring to the figure compressor normally forwards hot gaseous refrigerant through the line 11 to condenser 12. Liquefaction of the refrigerant in the condenser occurs by virtue of a heat transfer action between a medium passing over the outer surface of the condenser and the refrigerant within the condenser. Liquified refrigerant flows from the condenser through expansion valve 13 into evaporator 14 where it is converted to the vapor phase as air or any other medium flowing over the evaporator gives up its heat to the refrigerant. 'Ihe vaporous refrigerant then continues through suction line 15 to the compressor 10 to complete the circuit.
Lubrication of the moving parts of the compressor is provided by a pump 20 having communication with the crankcase of the compressor. Lubricant flowing through the suction line of the pump is discharged through line 21 having a portion 22 in heat transfer relation with the return bends of the evaporator 14. Preferably the evaporator consists of a continuous tubular member comprising a plurality of spaced straight portions inter-connected at their ends by arcuate tubular members called return bends. The return bends on a normal evaporator coil of the type described are disposed outside of tube sheets which in effect support the continuous tubular member defined by the vertically spaced tube portions. In other words any extended surface is normally placed on that portion of the coil in which the parallel runs are located. This invention contemplates utilizing the prime surface of the return bends to effect a heat transfer action between the refrigerant flowing in the return bends and the lubricant flowing in the portion 22 of the line 21. This action serves to prevent sweating of the return bends. The cooled lubricant after it leaves that portion of line 21 in heat transfer relation with the evaporator return bends is forwarded under the action of the pump to the parts of the compressor requiring lubrication. In the interest of clarity, the details of the part of the lubrication circuit disposed within the compressor have been deleted. However, it will be appreciated that the usual and normal reciprocating compressor is contemplated.
It will thus be apparent that a simple and effective means for cooling lubricant flowing Within the lubrication system of equipment associated with a refrigeration machine has been provided, without adding a separate component to the system and without requiring the piping of refrigerant to an oil cooler.
While I have described a preferred embodiment of the invention ti will be understood that the invention is not limited thereto since it may be otherwise embodied within the scope of the following claim.
I claim:
In a refrigeration system including a compressor, a lubrication system for the compressor, a condenser, refrigerant expansion means, and an evaporator comprising tubular means having substantially parallel portions interconnected by end portions to form a path of flow for the refrigerant, means for cooling the lubricant including a line, forming a part of the lubrication supply circuit, having a portion in heat transfer relation with the end portions of the evaporator.
References Cited in the file of this patent UNITED STATES PATENTS Re. 24,192 Jarlais Aug. 7, 1956 1,550,856 Whitehead Aug. 26, 1925 2,684,579 Hieatt et al July 27, 1954 FOREIGN PATENTS 405,207 Great Britain Feb. 1, 1934 426,692 Great Britain Apr. 8, 1935
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US706630A US2963886A (en) | 1958-01-02 | 1958-01-02 | Lubricant cooling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US706630A US2963886A (en) | 1958-01-02 | 1958-01-02 | Lubricant cooling system |
Publications (1)
Publication Number | Publication Date |
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US2963886A true US2963886A (en) | 1960-12-13 |
Family
ID=24838416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US706630A Expired - Lifetime US2963886A (en) | 1958-01-02 | 1958-01-02 | Lubricant cooling system |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3270521A (en) * | 1965-09-08 | 1966-09-06 | Worthington Corp | Refrigerant cooled oil cooler system |
US3465541A (en) * | 1968-04-05 | 1969-09-09 | Whirlpool Co | Absorption refrigeration |
EP0021315A1 (en) * | 1979-06-20 | 1981-01-07 | Hydrowatt Systems Limited | Piston machine, particularly piston pump |
EP0050959A1 (en) * | 1980-10-23 | 1982-05-05 | Ormat Turbines, Ltd. | Improved lubricating system for organic fluid power plant |
US4693736A (en) * | 1986-09-12 | 1987-09-15 | Helix Technology Corporation | Oil cooled hermetic compressor used for helium service |
US6474405B1 (en) * | 2000-09-26 | 2002-11-05 | Meritor Heavy Vehicle Technology, Llc | Refrigeration utilized to cool driveline lubricants |
WO2009091403A1 (en) * | 2008-01-17 | 2009-07-23 | Carrier Corporation | Refrigerant vapor compression system with lubricant cooler |
CN105736930A (en) * | 2016-05-13 | 2016-07-06 | 阜新美迪原环保科技有限公司 | Oil wind radiator for cooling lubricating oil for wind-driven generator set |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1550856A (en) * | 1923-12-03 | 1925-08-25 | Thomas C Whitehead | Fluid separator |
GB405207A (en) * | 1932-10-05 | 1934-02-01 | Bbc Brown Boveri & Cie | Improvements in and relating to refrigerating machines |
GB426692A (en) * | 1933-07-27 | 1935-04-08 | Bbc Brown Boveri & Cie | Improvements in and relating to a totally enclosed refrigerating machine |
US2684579A (en) * | 1951-06-04 | 1954-07-27 | Hieatt Engineering Co | Apparatus for cooling oil of refrigerant compressors |
USRE24192E (en) * | 1956-08-07 | de jarlais |
-
1958
- 1958-01-02 US US706630A patent/US2963886A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE24192E (en) * | 1956-08-07 | de jarlais | ||
US1550856A (en) * | 1923-12-03 | 1925-08-25 | Thomas C Whitehead | Fluid separator |
GB405207A (en) * | 1932-10-05 | 1934-02-01 | Bbc Brown Boveri & Cie | Improvements in and relating to refrigerating machines |
GB426692A (en) * | 1933-07-27 | 1935-04-08 | Bbc Brown Boveri & Cie | Improvements in and relating to a totally enclosed refrigerating machine |
US2684579A (en) * | 1951-06-04 | 1954-07-27 | Hieatt Engineering Co | Apparatus for cooling oil of refrigerant compressors |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3270521A (en) * | 1965-09-08 | 1966-09-06 | Worthington Corp | Refrigerant cooled oil cooler system |
US3465541A (en) * | 1968-04-05 | 1969-09-09 | Whirlpool Co | Absorption refrigeration |
EP0021315A1 (en) * | 1979-06-20 | 1981-01-07 | Hydrowatt Systems Limited | Piston machine, particularly piston pump |
EP0050959A1 (en) * | 1980-10-23 | 1982-05-05 | Ormat Turbines, Ltd. | Improved lubricating system for organic fluid power plant |
US4693736A (en) * | 1986-09-12 | 1987-09-15 | Helix Technology Corporation | Oil cooled hermetic compressor used for helium service |
US6474405B1 (en) * | 2000-09-26 | 2002-11-05 | Meritor Heavy Vehicle Technology, Llc | Refrigeration utilized to cool driveline lubricants |
WO2009091403A1 (en) * | 2008-01-17 | 2009-07-23 | Carrier Corporation | Refrigerant vapor compression system with lubricant cooler |
US20100251756A1 (en) * | 2008-01-17 | 2010-10-07 | Carrier Corproation | Refrigerant vapor compression system with lubricant cooler |
JP2011510258A (en) * | 2008-01-17 | 2011-03-31 | キャリア コーポレイション | Refrigerant vapor compression system with lubricant cooler |
US8424337B2 (en) | 2008-01-17 | 2013-04-23 | Carrier Corporation | Refrigerant vapor compression system with lubricant cooler |
CN101910756B (en) * | 2008-01-17 | 2015-06-24 | 开利公司 | Refrigerant vapor compression system with lubricant cooler |
EP2229563A4 (en) * | 2008-01-17 | 2016-02-24 | Carrier Corp | Refrigerant vapor compression system with lubricant cooler |
CN105736930A (en) * | 2016-05-13 | 2016-07-06 | 阜新美迪原环保科技有限公司 | Oil wind radiator for cooling lubricating oil for wind-driven generator set |
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