US3838581A - Refrigerator apparatus including motor cooling means - Google Patents
Refrigerator apparatus including motor cooling means Download PDFInfo
- Publication number
- US3838581A US3838581A US00410665A US41066573A US3838581A US 3838581 A US3838581 A US 3838581A US 00410665 A US00410665 A US 00410665A US 41066573 A US41066573 A US 41066573A US 3838581 A US3838581 A US 3838581A
- Authority
- US
- United States
- Prior art keywords
- motor
- refrigerant
- condenser
- casing
- mixture
- 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
Links
Images
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
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/053—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
-
- 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
-
- 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
Definitions
- the compressor is operated by an open drive motor.
- the open drive motor is mounted externally of, and separate from, the compressor, as distinguished from an enclosed drive wherein the motor is mounted in the compressor housing.
- the advantages of an open drive motor are well known, especially in that the motor can be quickly and conveniently serviced and replaced if necessary. Also, if desired, the motor can be replaced by a turbine or other primer mover.
- the advantage of a refrigerant cooled motor is also well known. The main advantage being in that the rating of the motor may be reduced 25 percent or more. This effects a saving of several thousand dollars in motor costs for a motor drive on large tonnage refrigeration apparatus.
- auxiliary compressor and condenser there is provided an auxiliary compressor and condenser.
- the refrigerant vapor is passed from the motor casing to the inlet of the compressor and the liquid refrigerant is conveyed from the auxiliary condenser to the motor casing.
- a separate lubricating system is necessary to provide oil to the motor bearings.
- the motor bearings are sealed off to prevent the leakage of oil from the bearings into the refrigerant in the motor casing. It is necessary to periodically inspect the seals to make certain that the oil is not leaking into the refrigerant, especially where the LII compressor is of the reciprocating piston type.
- a separate lubricating system is necessary to provide oil to the motor bearings.
- the motor bearings are sealed off to prevent the leakage of oil from the bearings into the refrigerant in the motor casing. It is necessary to periodically inspect the seals to make certain that the oil is not leaking into the refrigerant, especially where the LII compressor is of the reciprocating piston type
- the refrigerant is passed directly from the main refrigerating apparatus to the motor casing. That arrangement has the same disadvantage in regard to supplying the lubricant to the motor bearings.
- the hermetically sealed motor casing is provided with the supply of mixture containing refrigerant and lubricating oil.
- a passage extends from the upper portion of the motor casing to the auxiliary condenser, and a passage from the condenser to the motor casing for the return of liquid refrigerant.
- Means is provided for maintaining the refrigerant oil mixture in the motor casing at a selected level.
- a flow metering means in a line extending from the main condenser to the cooling coil in the auxiliary condenser and is arranged to meter the refrigerant through the coil so as to maintain a flow of liquid refrigerant and oil mixtures from the auxiliary condenser to the motor casing sufficient to properly cool the motor when operated consistently under full load.
- the refrigeration system disclosed in the drawing includes a centrifugal type compressor operable to draw refrigerant vapor from the cooler 11 through a passageway 12. The compressed vapor is discharged from the compressor through a line 13 to a condenser 14.
- the condenser is provided with a refrigerant sump containing a flow control metering valve 21 for the discharge of liquid refrigerant through line 23 to the lower portion of the cooler 11.
- the motor for driving the compressor 10 includes a stator 25 and a rotor 27.
- the rotor 27 is journaled for rotation in bearigs 30, 31 mounted in the end walls 33-, 35 of the hermetically sealed casing 37.
- a first passageway extends from the upper portion of the casing 37 to an auxiliary condenser 41.
- a heat exchanging coil 43 is mounted in the condenser 4l.and is supplied with liquid refrigerant from the main condenser 14 through a line 44 which includes a flow control device 45. Refrigerant is returned from the heat exchanger 43 to the cooler. As shown in the drawing. the return line from the heat exchanger 43 is connected in line 23.
- Liquid refrigerant is conveyed from the auxiliary condenser 41 to the motor casing 37 by line 47.
- a supply of a mixture containing a refrigerant and a lubricating oil is maintained in the lower portion of the motor casing 37.
- the refrigerant vapor passing through the passage 40 to the auxiliary condenser contains a quantity of the lubricating oil entrained therein.
- the refrigerant vapor is condensed in the condenser 41 and returned through the passage 47, together with the oil entrained in the vapor.
- the mixture is maintained at a predetermined level indicated at by a metering valve 51 operated by a float 52.
- the valve 51 is mounted in a chamber 53.
- a pump 55 driven by a motor 56 operates to pump the mixture from the motor casing 37 through a line 57 for discharge onto the bearing 30 and against the confronting end of the rotor 27.
- the mixture is also pumped through line 60 to the bearing 31 and to the shaft seal 62.
- the auxiliary condenser 41 is cooled with refrigerant from the main condenser 14, the mixture flowing through the return passage 47 to the motor casing is at an exceptionally low temperature.
- the motor is cooled to a temperature substantially equal to the temperature in the cooler 11. This results in maintaining the oil in the mixture at high viscosity to provide good lubrication.
- This arrangement has the advantage of permitting the use of a refrigerant in the mixture different from the refrigerant in the refrigeration apparatus.
- the meter device 45 may be in the form of a fixed orifice or an adjustable valve. In any event, the flow through the return passage 47 is such as to'provide proper cooling of the motor when operated consistently at full load.
- the mixture may consist of 40 50 percent oil and 50. 60 percent refrigerant.
- a refrigeration system including a compressor, a condenser and a cooler, a'motor operatively connected to the compressor for operating the same, said motor being mounted in a hermetically sealed'casing, a quantity of mixture of a refrigerant and a lubricating oil in the motor casing, a passage extending from the upper portion of the motor casing to an auxiliary condenser and a second passage extending from the auxiliary condenser to the motor casing, means for maintaining said mixture at a selected level in the motor casing, a heat exchanging coil mounted in said auxiliary condenser, a refrigerant line extending from the apparatus condenser to said heat exchanger and a return line extending from the heat exchanger to the cooler of the apparatus, a flow metering device in said line from said apparatus condenser to said heat exchanger and operable to meter a flow of refrigerant from the apparatus condenser to said heat exchanger, said flow being sufficient to effectively cool the motor operating under maximum load
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00410665A US3838581A (en) | 1973-10-29 | 1973-10-29 | Refrigerator apparatus including motor cooling means |
ZA00746414A ZA746414B (en) | 1973-10-29 | 1974-10-08 | Refrigeration apparatus including motor cooling means |
GB43791/74A GB1487071A (en) | 1973-10-29 | 1974-10-09 | Refrigeration apparatus including motor cooling means |
AU74243/74A AU487837B2 (en) | 1973-10-29 | 1974-10-11 | Refrigeration apparatus including motor cooling means |
IT28440/74A IT1022886B (it) | 1973-10-29 | 1974-10-15 | Apparecchiatura di refrigerazione comprendente mezzi di refrigerazione del motore |
DE19742450169 DE2450169A1 (de) | 1973-10-29 | 1974-10-22 | Kaeltemaschine mit einer kuehleinrichtung fuer den motor |
BR8827/74A BR7408827D0 (pt) | 1973-10-29 | 1974-10-23 | Aparelho de refrigeracao |
FR7435852A FR2249473B1 (sv) | 1973-10-29 | 1974-10-25 | |
NL7413982A NL7413982A (nl) | 1973-10-29 | 1974-10-25 | Koelsysteem. |
JP49123274A JPS5074241A (sv) | 1973-10-29 | 1974-10-25 | |
BE149910A BE821513A (fr) | 1973-10-29 | 1974-10-25 | Appareil de refrigeration comprenant un dispositif de refroidissement de moteur |
ES431405A ES431405A1 (es) | 1973-10-29 | 1974-10-26 | Una maquina de refrigeracion. |
SE7413528A SE409618B (sv) | 1973-10-29 | 1974-10-28 | Kylanordning innefattande organ for motorkylning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00410665A US3838581A (en) | 1973-10-29 | 1973-10-29 | Refrigerator apparatus including motor cooling means |
Publications (1)
Publication Number | Publication Date |
---|---|
US3838581A true US3838581A (en) | 1974-10-01 |
Family
ID=23625696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00410665A Expired - Lifetime US3838581A (en) | 1973-10-29 | 1973-10-29 | Refrigerator apparatus including motor cooling means |
Country Status (12)
Country | Link |
---|---|
US (1) | US3838581A (sv) |
JP (1) | JPS5074241A (sv) |
BE (1) | BE821513A (sv) |
BR (1) | BR7408827D0 (sv) |
DE (1) | DE2450169A1 (sv) |
ES (1) | ES431405A1 (sv) |
FR (1) | FR2249473B1 (sv) |
GB (1) | GB1487071A (sv) |
IT (1) | IT1022886B (sv) |
NL (1) | NL7413982A (sv) |
SE (1) | SE409618B (sv) |
ZA (1) | ZA746414B (sv) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669279A (en) * | 1985-03-19 | 1987-06-02 | Ebara Corporation | Motor cooling apparatus for refrigerator |
US4747276A (en) * | 1986-04-15 | 1988-05-31 | Seiko Seiki Kabushiki Kaisha | Helium compressor apparatus |
US4890461A (en) * | 1987-07-21 | 1990-01-02 | Bernard Zimmern | Hermetic or semi-hermetic refrigeration motor-compressor unit |
US4899555A (en) * | 1989-05-19 | 1990-02-13 | Carrier Corporation | Evaporator feed system with flash cooled motor |
US5848538A (en) * | 1997-11-06 | 1998-12-15 | American Standard Inc. | Oil and refrigerant pump for centrifugal chiller |
US6065297A (en) * | 1998-10-09 | 2000-05-23 | American Standard Inc. | Liquid chiller with enhanced motor cooling and lubrication |
US6098422A (en) * | 1998-12-03 | 2000-08-08 | American Standard Inc. | Oil and refrigerant pump for centrifugal chiller |
US6176092B1 (en) | 1998-10-09 | 2001-01-23 | American Standard Inc. | Oil-free liquid chiller |
US20050284173A1 (en) * | 2004-06-29 | 2005-12-29 | York International Corporation | System and method for cooling a compressor motor |
US20070186581A1 (en) * | 2006-02-14 | 2007-08-16 | Ingersoll-Rand Company | Compressor cooling system |
US20070212232A1 (en) * | 2004-06-29 | 2007-09-13 | Johnson Controls Technology Company | System and method for cooling a compressor motor |
US20120240614A1 (en) * | 2004-12-22 | 2012-09-27 | Johnson Controls Technology Company | Medium voltage power controller |
US20140363311A1 (en) * | 2012-02-07 | 2014-12-11 | Johnson Controls Technology Company | Hermetic motor cooling and control |
CN104979960A (zh) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | 一种发电电动机的外蒸发式冷却*** |
US9178405B2 (en) | 2011-05-13 | 2015-11-03 | Carrier Corporation | Magnetic drive coupling apparatus |
US20160040915A1 (en) * | 2013-03-25 | 2016-02-11 | Carrier Corporation | Compressor Bearing Cooling |
US20170097007A1 (en) * | 2014-03-18 | 2017-04-06 | Carrier Corporation | Refrigerant lube system |
CN107429680A (zh) * | 2015-03-19 | 2017-12-01 | 三菱重工制冷空调***株式会社 | 压缩机驱动用马达及其冷却方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3163999A (en) * | 1962-08-01 | 1965-01-05 | Westinghouse Electric Corp | Centrifugal compressor lubricating and motor cooling systems |
US3422635A (en) * | 1967-03-21 | 1969-01-21 | Bbc Brown Boveri & Cie | Lubricating and cooling system for electric motors |
US3563051A (en) * | 1968-08-13 | 1971-02-16 | Thermomeccanica Italiana | Apparatus for lubricating the compressor of a refrigerating installation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3393528A (en) * | 1966-12-01 | 1968-07-23 | Carrier Corp | Refrigeration machine with lubricant cooling |
-
1973
- 1973-10-29 US US00410665A patent/US3838581A/en not_active Expired - Lifetime
-
1974
- 1974-10-08 ZA ZA00746414A patent/ZA746414B/xx unknown
- 1974-10-09 GB GB43791/74A patent/GB1487071A/en not_active Expired
- 1974-10-15 IT IT28440/74A patent/IT1022886B/it active
- 1974-10-22 DE DE19742450169 patent/DE2450169A1/de active Pending
- 1974-10-23 BR BR8827/74A patent/BR7408827D0/pt unknown
- 1974-10-25 JP JP49123274A patent/JPS5074241A/ja active Pending
- 1974-10-25 BE BE149910A patent/BE821513A/xx not_active IP Right Cessation
- 1974-10-25 FR FR7435852A patent/FR2249473B1/fr not_active Expired
- 1974-10-25 NL NL7413982A patent/NL7413982A/xx not_active Application Discontinuation
- 1974-10-26 ES ES431405A patent/ES431405A1/es not_active Expired
- 1974-10-28 SE SE7413528A patent/SE409618B/sv not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3163999A (en) * | 1962-08-01 | 1965-01-05 | Westinghouse Electric Corp | Centrifugal compressor lubricating and motor cooling systems |
US3422635A (en) * | 1967-03-21 | 1969-01-21 | Bbc Brown Boveri & Cie | Lubricating and cooling system for electric motors |
US3563051A (en) * | 1968-08-13 | 1971-02-16 | Thermomeccanica Italiana | Apparatus for lubricating the compressor of a refrigerating installation |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669279A (en) * | 1985-03-19 | 1987-06-02 | Ebara Corporation | Motor cooling apparatus for refrigerator |
US4747276A (en) * | 1986-04-15 | 1988-05-31 | Seiko Seiki Kabushiki Kaisha | Helium compressor apparatus |
US4890461A (en) * | 1987-07-21 | 1990-01-02 | Bernard Zimmern | Hermetic or semi-hermetic refrigeration motor-compressor unit |
US4899555A (en) * | 1989-05-19 | 1990-02-13 | Carrier Corporation | Evaporator feed system with flash cooled motor |
US5848538A (en) * | 1997-11-06 | 1998-12-15 | American Standard Inc. | Oil and refrigerant pump for centrifugal chiller |
US6065297A (en) * | 1998-10-09 | 2000-05-23 | American Standard Inc. | Liquid chiller with enhanced motor cooling and lubrication |
US6176092B1 (en) | 1998-10-09 | 2001-01-23 | American Standard Inc. | Oil-free liquid chiller |
US6279340B1 (en) | 1998-10-09 | 2001-08-28 | American Standard International Inc. | Oil-free liquid chiller |
US6098422A (en) * | 1998-12-03 | 2000-08-08 | American Standard Inc. | Oil and refrigerant pump for centrifugal chiller |
US6250102B1 (en) * | 1998-12-03 | 2001-06-26 | American Standard International Inc. | Oil and refrigerant pump for centrifugal chiller |
US6250101B1 (en) * | 1998-12-03 | 2001-06-26 | American Standard International Inc. | Oil and refrigerant pump for centrifugal chiller |
US20070212232A1 (en) * | 2004-06-29 | 2007-09-13 | Johnson Controls Technology Company | System and method for cooling a compressor motor |
US20050284173A1 (en) * | 2004-06-29 | 2005-12-29 | York International Corporation | System and method for cooling a compressor motor |
US8021127B2 (en) | 2004-06-29 | 2011-09-20 | Johnson Controls Technology Company | System and method for cooling a compressor motor |
US8465265B2 (en) | 2004-06-29 | 2013-06-18 | Johnson Controls Technology Company | System and method for cooling a compressor motor |
US7181928B2 (en) | 2004-06-29 | 2007-02-27 | York International Corporation | System and method for cooling a compressor motor |
US20120240614A1 (en) * | 2004-12-22 | 2012-09-27 | Johnson Controls Technology Company | Medium voltage power controller |
US8590329B2 (en) * | 2004-12-22 | 2013-11-26 | Johnson Controls Technology Company | Medium voltage power controller |
US8820105B2 (en) | 2004-12-22 | 2014-09-02 | Johnson Controls Technology Company | Medium voltage power controller |
US20070186581A1 (en) * | 2006-02-14 | 2007-08-16 | Ingersoll-Rand Company | Compressor cooling system |
US9178405B2 (en) | 2011-05-13 | 2015-11-03 | Carrier Corporation | Magnetic drive coupling apparatus |
US20140363311A1 (en) * | 2012-02-07 | 2014-12-11 | Johnson Controls Technology Company | Hermetic motor cooling and control |
US9291167B2 (en) * | 2012-02-07 | 2016-03-22 | Johnson Controls Technology Company | Hermetic motor cooling and control |
US20160040915A1 (en) * | 2013-03-25 | 2016-02-11 | Carrier Corporation | Compressor Bearing Cooling |
US10228168B2 (en) * | 2013-03-25 | 2019-03-12 | Carrier Corporation | Compressor bearing cooling |
US20170097007A1 (en) * | 2014-03-18 | 2017-04-06 | Carrier Corporation | Refrigerant lube system |
US10527050B2 (en) * | 2014-03-18 | 2020-01-07 | Carrier Corporation | Refrigerant lube system |
CN107429680A (zh) * | 2015-03-19 | 2017-12-01 | 三菱重工制冷空调***株式会社 | 压缩机驱动用马达及其冷却方法 |
CN104979960A (zh) * | 2015-07-14 | 2015-10-14 | 国家电网公司 | 一种发电电动机的外蒸发式冷却*** |
Also Published As
Publication number | Publication date |
---|---|
AU7424374A (en) | 1976-04-15 |
FR2249473B1 (sv) | 1982-01-08 |
NL7413982A (nl) | 1975-05-02 |
JPS5074241A (sv) | 1975-06-18 |
GB1487071A (en) | 1977-09-28 |
SE409618B (sv) | 1979-08-27 |
SE7413528L (sv) | 1975-04-30 |
ZA746414B (en) | 1975-10-29 |
ES431405A1 (es) | 1976-10-16 |
BR7408827D0 (pt) | 1975-09-23 |
FR2249473A1 (sv) | 1975-05-23 |
BE821513A (fr) | 1975-02-17 |
DE2450169A1 (de) | 1975-04-30 |
IT1022886B (it) | 1978-04-20 |
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