US2983117A - Absorption refrigerating system - Google Patents
Absorption refrigerating system Download PDFInfo
- Publication number
- US2983117A US2983117A US752070A US75207058A US2983117A US 2983117 A US2983117 A US 2983117A US 752070 A US752070 A US 752070A US 75207058 A US75207058 A US 75207058A US 2983117 A US2983117 A US 2983117A
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- pump
- motor
- refrigerant
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- absorber
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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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Definitions
- This invention relates to absorption refrigerating systems and more particularly to an absorption refrigerating system including means for circulating fluids in the system.
- Systems of this type generally have portions which operate at less than atmospheric pressure and therefore it is desirable to avoid running seals between the interior of the pump and the atmosphere. Such running seals provide some opportunity for air to leak into the system. The presence of air in the system reduces the efliciency, and it must be removed by a purge'apparatus.
- Fig. 1 is a diagrammatic section of the absorption refrigerating system including the fluid circulating system;
- Fig. 2 is a cross section view through the axis of a typical circulating pump.
- the absorption system shown has a single shell 10 enclosing a condenser 12, a generator 14, and evaporator 16 and an absorber 18. It should be understood that other arrangements might be used; for instance, the generator and condenser might be in one shell and the absorber and evaporator might be in a sec- 0nd shell with conduits therebetween for conducting fluids.
- the absorber 18 has a coil 20'supplied with cooling fluid'from a source 22 to remove heat from the absorber.
- This cooling fluid is conducted by a conduit 24 to a cooling coil 26 in the condenser 12 and the cooling fluid leava the machine through a conduit 28.
- the cooling coil 26 in the condenser 12 removes heat from and condenses the vapor in the condenser.
- the generator 14 has a heating coil 30 supplied with heating fluid from a source 32.
- the heating fluid is discharged from the coil 30 through a conduit 34.
- the coil 30 heats the absorbent solution in the generator causing it to boil and force refrigerant vapor into the condenser 12.
- the condensed fluid in the condenser 12 flows through an opening 36 into the evaporator 16.
- the absorbent solution in the absorber 18 reduces the pressure in the absorber 18 and in the evaporator 16 by the absorption of water vapor, thus causing the refrigerant in the Patented May 9, 1961 evaporator 16 to boil. A low temperature is thus main-' tained in the evaporator 16..
- Evaporator 16 has a coil 38. Fluid from a refrigerating load such as an air conditioning system enters the coil 38 through a conduit 40. This fluid is reduced in temperature in the coil 38 and returns to the refrigerating load through conduit 42.
- the liquid refrigerant inthe has a discharge conduit 56 for conducting the absorbent under pressure to a spray tree 58 in the absorber 18.
- Absorbent fluid also flows from the absorbent through a conduit'60 to anl'absorbent fluid pump 62 which has a discharge conduit 64 for conducting fluid to a heat exchanger 66 and thence to the generator 14 through a conduit 68. Concentrated absorbent solution flows from the generator 14 through a conduit 70 to heat exchanger 66 and thence through conduit 72 to the absorber 18.
- the refrigerant is water and that the absorbent is a salt such as lithium bromide or lithium chloride.
- the pumps 46, 54 and 62 are generally similar in construction and although Fig. 2 shows a typical construction, it will be referred to as pump 46.
- Refrigerant from the conduit 48 is conducted to the motor 75 of the pump 46 through a conduit 74. This refrigerant serves to cool and lubricate the motor 75 of the pump 46.
- a conduit 76 conducts the refrigerant from the pump 46.to the conduit 44.
- refrigerant lubricant and coolant are conducted to the pump 62 fiom the conduit 48 through conduits 78 and 80, and refrigerant lubricant and coolant are conducted to the pump 54 from the conduit 48 through conduits 78 and 82.
- Refrigerant lubricant and coolant flow from the pump 62 to the conduit 44 through conduits 84 and 86, and the refrigerant lubricant and coolant flowfrom the pump 54 to the conduit 44 through conduits 88 and 86.
- FIG. 2 shows pump 46
- a pump housing 90 has its inlet connected to conduit. 44 and its discharge connected to conduit 48.
- Motor 75 is held to pump housing 90 by clamps 92 and bolts 94.
- a gasket 96 is pinched between the pump housing 90 and the end cap 98 of the motor 75 thus providing a vacuum. seal between the pump housing 90 and the end cap 98 of the motor.
- the motor 75 has another at cap 100.
- a shell 102- extends between-and is welded to the end caps 98 and I cap 100 and cover plate 104.
- a bearing plate 110 is secured to end cap 98 by bolts 112.
- Bearing plate 110 supports a carbon bearing liner 114 which rotatably supports a motor shaft 116.
- End cap supports the bearing 117 which has a carbon bearing liner 118 which also rotatably supports shaft 116.
- the bearing liner 118 has grooves (not shown) for the passage of lubricant longitudinally of the bearing.
- a Kingsbury type of thrust bearing indicated generally by numeral 120 supports the shaft 116 on the bearing plate
- a seal housing 122 is supported in the bearing plate 110 and carries a spring 124 which engages and urges a stationary seal ring 126 of carbon or other suitable material against a seal ring 128 of metal or other suitable material which rot-ates with by 'a nut 134.
- the lubricant and coolant flowing into the motor 75 through the conduit 74 flow down through a central passageway 136 in the shaft 116. The lubrica'nt.
- Lubricant also flows through passageways 140 to the bearing liner 114 and to the seal rings 126 and 128 to lubricate these parts.
- a cylindrical liner- 142 is expanded at one end into intimate contact with the end cap 98 and it is welded thereto, and it is expanded at its other end into intimate contact with the end cap 100 and it is welded thereto.
- An O-ring '144 of neoprene or similar material provides a seal between liner 142 and end cap 110.
- the lubricant fluid discharged from the bearing liner 114 and from the thrust bearing 120 flows upwardly in the cylindrical liner 142 passing through the gap 145 between the rotor 146 and the liner 142.
- the lubricant then flows through holes 148 in the bearing 116 and thence into the conduit 76. It should be understood that the lubricant passing through the motor removes heat from the motor.
- the stator '150 of the motor '75 is embedded in an epoxy resin 1 52 which prevents moisture from reaching the windings 154 of the stator. Electrical conduits for the stator 150 enter the motor 75 through an adapter 156.
- the impeller of the pump 46 is designed with sufiicient diameter to produce a dischargepressure greater than that produced by the pumps 54' and 62 in order that the refrigerant lubricant conductedto the latter two pumps will be at a greater pressure than the discharge pressure of such pumps. Therefore, any. leakage through the seals of the pumps 54 and 62 will be in a direction from the lubricant side of the seal to the pump housing side of the seal. The entrance of the absorbent solution into the motors of pumps 54 and 62 is thus prevented.
- each may be cooled and lubricated with the solution which it is pumping in the same manner in which the pump 46 is cooled and lubricated with the fluid which it is pumping.
- an absorption refrigerating stystem the combination of an absorber, an evaporator, a generator and a condenser, means for circulating refrigerant in said evaporator, a pump for pumping absorbent from said absorber to said generator, a motor having a shaft connected to and driving said pump, means for conducting refrigerant from said refrigerant circulating means through said motor to lubricate and cool said motor, said refrigerant circulating means being constructed to deliver refrigerant to said motor at a higher pressure than the pressure of absorbent delivered by said pump.
- an absorption refrigerating system the combination of an absorber, an evaporator, a generator and a condenser, means for circulating refrigerant in said evaporator, a pump for circulating absorbent in said absorber, a motor having a shaft connected to and driving said pump, means for conducting refrigerant from said refrigerant circulating means through said motor to lubricate and cool said motor, said refrigerant circulating means being constructed to deliver refrigerant to said motor at a higher pressure than the pressure of absorbent delivered by said pump.
- an absorption refrigerating system the combination of an absorber, an evaporator, a generator and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for pumping absorbent from said absorber to said generator, a motor having a shaft connected to and driving said second pump and means for conducting refrigerant fi'orrr the discharge side of said first pump through said motor to lubricate and cool said motor.
- An absorption refrigerating system having means for conducting refrigerant from i said motor to said first pump.
- an absorption refrigerating system the combination of an absorber, an evaporator, a generator, and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for circulating absorbent in said absorber, a motor having a shaft connected to and driving said second pump, and means for'conducting refrigerant from the discharge side of said first pump through said motor to lubricate and cool said motor.
- An absorption refrigerating system having means for conducting refrigerant from said motor to said first pump.
- an absorption refrigerating system the combination of an absorber, an evaporator, a generator, and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for circulating absorbent in said absorber, a first, motor having a shaft connected to and driving said second pump, a third pump for pumping absorbent from said absorber to said generator, a second motor having a shaft connected to and driving said third pump, means for conducting refrigerant from the discharge side of said first pump through said first motor and said second motor to lubricate and cool said first motor and said second motor.
- An absorption refrigerating system according to claim 7 having means for conducting refrigerant from said first motor and said second motor to the inlet of said first pump.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Description
y 1951 P. EDBERG ETAL 2,983,117
ABSORPTION REFRIGERATING SYSTEM Filed July 30, 1958 2 Sheets-Sheet 1 1 22 4 75 y & 9
FlG' INVENTORS PER EDBERG EDWARD M. STUBBLEFIELD ATTORNEYS United States Patent ABSORPTION REFRIGERATING SYSTEM Per Edberg and Edward M. Stubblelield, La Crosse, Wis., assignors to The Trane Company, La Crosse, Wis., a corporation of Wisconsin v Filed July 30, 1958, Ser. No. 752,070
8 Claims. (Cl. 62-476) This invention relates to absorption refrigerating systems and more particularly to an absorption refrigerating system including means for circulating fluids in the system. Systems of this type generally have portions which operate at less than atmospheric pressure and therefore it is desirable to avoid running seals between the interior of the pump and the atmosphere. Such running seals provide some opportunity for air to leak into the system. The presence of air in the system reduces the efliciency, and it must be removed by a purge'apparatus.
It is an object of this invention to provide hermetic pumps for circulating the fluids of an absorption system.
It is another object of the invention to lubricate and cool the pumps with the fluids being circulated or one of the fluids being circulated. 1
It is still another object of the invention to provide for the pumps circulating absorbent solution, a higher pressure in the lubricant than in the discharge of such pumps so that any leakage past the seal will be leakage of lubricant into the absorbent rather than leakage of absorbent into the lubricant.
It is another object of the invention to lubricate the absorbent solution pumps from fluid taken from the discharge side of the refrigerant circulating pump.
Other objects and advantages of this invention will become -apparent as the specification proceeds to describe the invention with reference to the accompanying drawings in which:
Fig. 1 is a diagrammatic section of the absorption refrigerating system including the fluid circulating system;
Fig. 2 is a cross section view through the axis of a typical circulating pump.
Referring now to Fig. 1, the absorption system shown has a single shell 10 enclosing a condenser 12, a generator 14, and evaporator 16 and an absorber 18. It should be understood that other arrangements might be used; for instance, the generator and condenser might be in one shell and the absorber and evaporator might be in a sec- 0nd shell with conduits therebetween for conducting fluids.
The absorber 18 has a coil 20'supplied with cooling fluid'from a source 22 to remove heat from the absorber. This cooling fluid is conducted by a conduit 24 to a cooling coil 26 in the condenser 12 and the cooling fluid leava the machine through a conduit 28. The cooling coil 26 in the condenser 12 removes heat from and condenses the vapor in the condenser.
The generator 14 has a heating coil 30 supplied with heating fluid from a source 32. The heating fluid is discharged from the coil 30 through a conduit 34. The coil 30 heats the absorbent solution in the generator causing it to boil and force refrigerant vapor into the condenser 12. The condensed fluid in the condenser 12 flows through an opening 36 into the evaporator 16. The absorbent solution in the absorber 18 reduces the pressure in the absorber 18 and in the evaporator 16 by the absorption of water vapor, thus causing the refrigerant in the Patented May 9, 1961 evaporator 16 to boil. A low temperature is thus main-' tained in the evaporator 16..
Evaporator 16 has a coil 38. Fluid from a refrigerating load such as an air conditioning system enters the coil 38 through a conduit 40. This fluid is reduced in temperature in the coil 38 and returns to the refrigerating load through conduit 42. The liquid refrigerant inthe has a discharge conduit 56 for conducting the absorbent under pressure to a spray tree 58 in the absorber 18. Absorbent fluid also flows from the absorbent through a conduit'60 to anl'absorbent fluid pump 62 which has a discharge conduit 64 for conducting fluid to a heat exchanger 66 and thence to the generator 14 through a conduit 68. Concentrated absorbent solution flows from the generator 14 through a conduit 70 to heat exchanger 66 and thence through conduit 72 to the absorber 18.
Although various refrigerants and absorbents are used in absorption refrigerating machines, for the purpose of explanation it will be assumed that the refrigerant is water and that the absorbent is a salt such as lithium bromide or lithium chloride.
The pumps 46, 54 and 62 are generally similar in construction and although Fig. 2 shows a typical construction, it will be referred to as pump 46.
Refrigerant from the conduit 48 is conducted to the motor 75 of the pump 46 through a conduit 74. This refrigerant serves to cool and lubricate the motor 75 of the pump 46. A conduit 76 conducts the refrigerant from the pump 46.to the conduit 44. Referring now to pumps 62 and 54, refrigerant lubricant and coolant are conducted to the pump 62 fiom the conduit 48 through conduits 78 and 80, and refrigerant lubricant and coolant are conducted to the pump 54 from the conduit 48 through conduits 78 and 82. Refrigerant lubricant and coolant flow from the pump 62 to the conduit 44 through conduits 84 and 86, and the refrigerant lubricant and coolant flowfrom the pump 54 to the conduit 44 through conduits 88 and 86. I
Assuming now thatFig. 2 shows pump 46, a pump housing 90 has its inlet connected to conduit. 44 and its discharge connected to conduit 48. Motor 75 is held to pump housing 90 by clamps 92 and bolts 94. A gasket 96 is pinched between the pump housing 90 and the end cap 98 of the motor 75 thus providing a vacuum. seal between the pump housing 90 and the end cap 98 of the motor.
The motor 75 has another at cap 100. A shell 102- extends between-and is welded to the end caps 98 and I cap 100 and cover plate 104.
A bearing plate 110 is secured to end cap 98 by bolts 112. Bearing plate 110 supports a carbon bearing liner 114 which rotatably supports a motor shaft 116. End cap supports the bearing 117 which has a carbon bearing liner 118 which also rotatably supports shaft 116. Although I prefer carbon as a material for the bearing liners, ceramic materials can be used. The bearing liner 118 has grooves (not shown) for the passage of lubricant longitudinally of the bearing. A Kingsbury type of thrust bearing indicated generally by numeral 120 supports the shaft 116 on the bearing plate A seal housing 122 is supported in the bearing plate 110 and carries a spring 124 which engages and urges a stationary seal ring 126 of carbon or other suitable material against a seal ring 128 of metal or other suitable material which rot-ates with by 'a nut 134. The lubricant and coolant flowing into the motor 75 through the conduit 74 flow down through a central passageway 136 in the shaft 116. The lubrica'nt.
flows through radial passageways 138 to the thrust bearing 120to lubricate the same. Lubricant also flows through passageways 140 to the bearing liner 114 and to the seal rings 126 and 128 to lubricate these parts.
A cylindrical liner- 142 is expanded at one end into intimate contact with the end cap 98 and it is welded thereto, and it is expanded at its other end into intimate contact with the end cap 100 and it is welded thereto. An O-ring '144 of neoprene or similar material provides a seal between liner 142 and end cap 110.
The lubricant fluid discharged from the bearing liner 114 and from the thrust bearing 120 flows upwardly in the cylindrical liner 142 passing through the gap 145 between the rotor 146 and the liner 142. The lubricant then flows through holes 148 in the bearing 116 and thence into the conduit 76. It should be understood that the lubricant passing through the motor removes heat from the motor.
The stator '150 of the motor '75 is embedded in an epoxy resin 1 52 which prevents moisture from reaching the windings 154 of the stator. Electrical conduits for the stator 150 enter the motor 75 through an adapter 156.
The impeller of the pump 46 is designed with sufiicient diameter to produce a dischargepressure greater than that produced by the pumps 54' and 62 in order that the refrigerant lubricant conductedto the latter two pumps will be at a greater pressure than the discharge pressure of such pumps. Therefore, any. leakage through the seals of the pumps 54 and 62 will be in a direction from the lubricant side of the seal to the pump housing side of the seal. The entrance of the absorbent solution into the motors of pumps 54 and 62 is thus prevented.
Although we prefer to lubricate and cool the pumps 54 and 62 using refrigerant, each may be cooled and lubricated with the solution which it is pumping in the same manner in which the pump 46 is cooled and lubricated with the fluid which it is pumping.
While a specific embodiment of the invention has been described in detail, it is contemplated that various modifioations may be made without departing from the scope or spirit of the invention and we desire to be limited only by the claims.
We claim:
1. In an absorption refrigerating stystem, the combination of an absorber, an evaporator, a generator and a condenser, means for circulating refrigerant in said evaporator, a pump for pumping absorbent from said absorber to said generator, a motor having a shaft connected to and driving said pump, means for conducting refrigerant from said refrigerant circulating means through said motor to lubricate and cool said motor, said refrigerant circulating means being constructed to deliver refrigerant to said motor at a higher pressure than the pressure of absorbent delivered by said pump.
2. In an absorption refrigerating system, the combination of an absorber, an evaporator, a generator and a condenser, means for circulating refrigerant in said evaporator, a pump for circulating absorbent in said absorber, a motor having a shaft connected to and driving said pump, means for conducting refrigerant from said refrigerant circulating means through said motor to lubricate and cool said motor, said refrigerant circulating means being constructed to deliver refrigerant to said motor at a higher pressure than the pressure of absorbent delivered by said pump. a
3. In an absorption refrigerating system, the combination of an absorber, an evaporator, a generator and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for pumping absorbent from said absorber to said generator, a motor having a shaft connected to and driving said second pump and means for conducting refrigerant fi'orrr the discharge side of said first pump through said motor to lubricate and cool said motor.
4. An absorption refrigerating system according to claim 3 having means for conducting refrigerant from i said motor to said first pump.
' 5. In an absorption refrigerating system, the combination of an absorber, an evaporator, a generator, and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for circulating absorbent in said absorber, a motor having a shaft connected to and driving said second pump, and means for'conducting refrigerant from the discharge side of said first pump through said motor to lubricate and cool said motor.
6. An absorption refrigerating system according to claim 5 having means for conducting refrigerant from said motor to said first pump.
7. In an absorption refrigerating system, the combination of an absorber, an evaporator, a generator, and a condenser, a first pump for circulating refrigerant in said evaporator, a second pump for circulating absorbent in said absorber, a first, motor having a shaft connected to and driving said second pump, a third pump for pumping absorbent from said absorber to said generator, a second motor having a shaft connected to and driving said third pump, means for conducting refrigerant from the discharge side of said first pump through said first motor and said second motor to lubricate and cool said first motor and said second motor.
8. An absorption refrigerating system: according to claim 7 having means for conducting refrigerant from said first motor and said second motor to the inlet of said first pump.
References Cited in the file of this patent UNITED STATES PATENTS
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752070A US2983117A (en) | 1958-07-30 | 1958-07-30 | Absorption refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752070A US2983117A (en) | 1958-07-30 | 1958-07-30 | Absorption refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2983117A true US2983117A (en) | 1961-05-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US752070A Expired - Lifetime US2983117A (en) | 1958-07-30 | 1958-07-30 | Absorption refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2983117A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126720A (en) * | 1962-02-15 | 1964-03-31 | Absorption refrigerating machine | |
| US3137144A (en) * | 1962-07-27 | 1964-06-16 | American Gas Ass | Level control and fail safe arrangement for absorption refrigeration systems |
| US3195323A (en) * | 1962-09-04 | 1965-07-20 | Electronic Specialty Co | Method and apparatus for vapor and liquid contact |
| DE1199792B (en) * | 1963-10-21 | 1965-09-02 | Borg Warner | Absorption cooling system with a hermetically sealed cooling system for the pump motors |
| US3241330A (en) * | 1963-08-08 | 1966-03-22 | Borg Warner | Prevention of concentrated solution flashing in an absorption refrigeration system |
| US3267691A (en) * | 1964-10-23 | 1966-08-23 | Borg Warner | Cooling and lubricating system for absorption refrigeration apparatus |
| US3295335A (en) * | 1963-10-21 | 1967-01-03 | Borg Warner | Hermetically sealed pump-motor assembly cooling system for absorptionrefrigeration apparatus |
| US3314246A (en) * | 1965-10-22 | 1967-04-18 | Borg Warner | Capacity control for refrigeration systems |
| US3575012A (en) * | 1968-11-06 | 1971-04-13 | Trane Co | Absorption refrigeration system having two stage generator |
| CH716685A1 (en) * | 2019-10-09 | 2021-04-15 | Ecoclim Sa | Absorption cooling machine. |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2196911A (en) * | 1935-10-28 | 1940-04-09 | Servel Inc | System for heating and refrigeration |
| US2317517A (en) * | 1940-02-05 | 1943-04-27 | Hoover Co | Refrigeration |
| US2400192A (en) * | 1943-08-09 | 1946-05-14 | Hoover Co | Refrigeration |
| US2430047A (en) * | 1944-10-25 | 1947-11-04 | Servel Inc | Low-pressure absorption refrigerating system including a liquid pump arrangement |
| US2473389A (en) * | 1947-01-02 | 1949-06-14 | Servel Inc | Low-pressure absorption refrigerating system |
| US2915886A (en) * | 1957-07-08 | 1959-12-08 | Carrier Corp | Hermetic pumps for use in refrigeration systems |
-
1958
- 1958-07-30 US US752070A patent/US2983117A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2196911A (en) * | 1935-10-28 | 1940-04-09 | Servel Inc | System for heating and refrigeration |
| US2317517A (en) * | 1940-02-05 | 1943-04-27 | Hoover Co | Refrigeration |
| US2400192A (en) * | 1943-08-09 | 1946-05-14 | Hoover Co | Refrigeration |
| US2430047A (en) * | 1944-10-25 | 1947-11-04 | Servel Inc | Low-pressure absorption refrigerating system including a liquid pump arrangement |
| US2473389A (en) * | 1947-01-02 | 1949-06-14 | Servel Inc | Low-pressure absorption refrigerating system |
| US2915886A (en) * | 1957-07-08 | 1959-12-08 | Carrier Corp | Hermetic pumps for use in refrigeration systems |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126720A (en) * | 1962-02-15 | 1964-03-31 | Absorption refrigerating machine | |
| US3137144A (en) * | 1962-07-27 | 1964-06-16 | American Gas Ass | Level control and fail safe arrangement for absorption refrigeration systems |
| US3195323A (en) * | 1962-09-04 | 1965-07-20 | Electronic Specialty Co | Method and apparatus for vapor and liquid contact |
| US3241330A (en) * | 1963-08-08 | 1966-03-22 | Borg Warner | Prevention of concentrated solution flashing in an absorption refrigeration system |
| DE1199792B (en) * | 1963-10-21 | 1965-09-02 | Borg Warner | Absorption cooling system with a hermetically sealed cooling system for the pump motors |
| US3295335A (en) * | 1963-10-21 | 1967-01-03 | Borg Warner | Hermetically sealed pump-motor assembly cooling system for absorptionrefrigeration apparatus |
| US3267691A (en) * | 1964-10-23 | 1966-08-23 | Borg Warner | Cooling and lubricating system for absorption refrigeration apparatus |
| US3314246A (en) * | 1965-10-22 | 1967-04-18 | Borg Warner | Capacity control for refrigeration systems |
| US3575012A (en) * | 1968-11-06 | 1971-04-13 | Trane Co | Absorption refrigeration system having two stage generator |
| CH716685A1 (en) * | 2019-10-09 | 2021-04-15 | Ecoclim Sa | Absorption cooling machine. |
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