Patents
Sitemap › F25 - Refrigeration or cooling; Combined heating and refrigeration systems; Heat pump systems; Manufacture or storage of ice; Liquefaction or solidification of gases › F25B - Refrigeration machines, plants, or systems; Combined heating and refrigeration systems; Heat pump systems › F25B 7 - Compression machines, plant, or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
Patents for F25B 7 - Compression machines, plant, or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit (1,593)
09/1993
09/16/1993DE4228415C1 Refrigeration system for food display cabinet - has high and low pressure circuits for refrigeration medium allowing different food compartments to be held at different temp. levels
09/14/1993US5243837 Subcooling system for refrigeration cycle
09/07/1993US5241829 Method of operating heat pump
05/1993
05/18/1993US5211026 Combination lift piston/axial port unloader arrangement for a screw compresser
03/1993
03/04/1993WO1993004286A1 Capacity control for screw compressors
02/1993
02/24/1993EP0527856A1 Food freezer
12/1992
12/15/1992US5170639 Cascade refrigeration system
12/02/1992EP0516093A1 Refrigerating unit
07/1992
07/16/1992DE4100753A1 Refrigerator with single condenser for all gaseous refrigerant(s) - has heat exchanger reconverting liq. to gas using single compressor
06/1992
06/24/1992CN1062204A Pump-less absorption replacement refrigerator
05/1992
05/27/1992EP0486758A1 A refrigerating apparatus for low-temperature refrigerated counters, particularly for frozen and deep-frozen products
05/06/1992EP0483161A1 Refrigeration and freezing plant.
04/1992
04/28/1992US5108475 Solvent recovery system with means for reducing input energy
04/21/1992US5105633 Solvent recovery system with means for supplemental cooling
03/1992
03/17/1992US5095712 Economizer control with variable capacity
11/1991
11/14/1991WO1991017400A1 Food freezer
08/1991
08/27/1991US5042262 Food freezer
08/06/1991US5036679 Oil separation from refrigerant gas flow
07/1991
07/24/1991CN2081511U Domestic cooling and heating box
05/1991
05/03/1991CA2022125A1 Heat pump system
11/1990
11/29/1990WO1990014566A1 Refrigeration and freezing plant
10/1990
10/10/1990CN1046017A Fully sealed steam engine system
08/1990
08/28/1990US4951474 Cryo-refrigeration system
06/1990
06/12/1990US4932221 Air-cooled cooling apparatus
11/1989
11/02/1989EP0340115A1 Central refrigeration plant supplying enclosures with at least two temperatures, and defrosting method for such a central plant
10/1989
10/04/1989CN2045380U Chlorine liquefying device
07/1989
07/26/1989CN2041793U Compound regenerative type refrigeration system
07/25/1989US4850199 Cryo-refrigeration system
07/25/1989CA1257833A1 Method and apparatus for gas cooling
12/1988
12/06/1988US4788829 Low-temperature refrigeration system
10/1988
10/18/1988US4777805 Heat pump system
10/1987
10/21/1987CN87200845U Refrigeration compressor with heat pipe
10/07/1987EP0239818A2 Zero gravity (position-insensitive) low- temperature multi-component refrigerator
09/1987
09/01/1987US4689964 Zero gravity (position-insensitive) low-temperature multi-component refrigerator
07/1987
07/01/1987EP0227504A1 Method of protecting a refrigeration plant against deposits of additives in the refrigerant circuit
06/1987
06/30/1987US4676072 Bypass system for a dual refrigeration cycle air conditioner
05/1987
05/20/1987CN86106599A 致冷系统 Refrigeration systems
07/1986
07/01/1986US4597268 Method and apparatus for gas-cooling
05/1986
05/14/1986EP0180904A2 Cooling device
04/1986
04/30/1986EP0179225A1 Heat pump system
11/1985
11/05/1985US4550574 Refrigeration system with liquid bypass line
08/1985
08/28/1985EP0153285A2 A method and apparatus for gas cooling
07/1985
07/24/1985EP0149413A2 Method and apparatus for refrigeration
04/1985
04/02/1985US4507938 System for air-conditioning and hot water supplying
11/1984
11/27/1984US4484449 Low temperature fail-safe cascade cooling apparatus
10/1984
10/02/1984CA1175251A1 Cascade heat pump for heating water and for cooling or heating a comfort zone
03/1984
03/27/1984US4438633 Method and apparatus for using low grade thermal energy to improve efficiency of air conditioning and refrigeration systems
12/1983
12/20/1983US4420946 Process for producing cold operated with phase separation
09/1983
09/27/1983US4406135 Heating and thermal conditioning process making use of a compression heat pump operating with a mixed working fluid
09/06/1983US4402189 Refrigeration system condenser heat recovery at higher temperature than normal condensing temperature
07/1983
07/05/1983US4391104 Cascade heat pump for heating water and for cooling or heating a comfort zone
05/1983
05/03/1983CA1145578A1 Low temperature fail-safe cascade cooling apparatus
04/1983
04/13/1983EP0076294A1 A method and a system for production of loose ice at large capacity
03/1983
03/15/1983CA1142846A1 Method of and system for refrigerating a fluid to be cooled down to a low temperature
11/1982
11/25/1982WO1982003993A1 Improved cryopump
11/09/1982CA1135065A1 Energy saving refrigeration system with mechanical subcooling
11/02/1982US4356701 Cryopump
10/1982
10/28/1982WO1982003679A1 A method and a system for production of loose ice at large capacity
08/1982
08/05/1982WO1982002588A1 Heat pump arrangement
08/04/1982EP0057120A2 Method of heating a room by means of a compression heat pump using a mixed working medium
07/1982
07/28/1982EP0056780A2 Disposition of heat pumps
06/1982
06/15/1982US4334902 Method of and system for refrigerating a fluid to be cooled down to a low temperature
06/09/1982EP0053536A2 Method of cold production using a separation cycle
04/1982
04/27/1982US4326387 Fluidic time delay system
04/20/1982US4325231 Cascade cooling arrangement
04/20/1982US4325226 Refrigeration system condenser heat recovery at higher temperature than normal condensing temperature
02/1982
02/02/1982US4313309 Two-stage refrigerator
12/1981
12/08/1981US4304100 Energy saving refrigeration system with mechanical subcooling
12/01/1981US4303427 Cascade multicomponent cooling method for liquefying natural gas
05/1981
05/19/1981CA1101233A1 Method and apparatus for heating by heat pumping
04/1981
04/14/1981CA1099121A1 Fluidic time delay system
03/1981
03/03/1981US4253309 Heat pump arrangement
12/1980
12/09/1980US4237689 Internal combustion engines
10/1980
10/21/1980US4228660 Heat exchangers
03/1980
03/25/1980US4194368 Combination split system air conditioner and compression cycle domestic hot water heating apparatus
03/11/1980US4192146 Process for the recovery of energy and in particular for the recovery of heat on the heat pump principle
01/1980
01/01/1980US4181174 Heat exchangers
01/01/1980CA1068919A Heat pump system selectively operable in a cascade mode and method of operation
12/1979
12/04/1979US4176525 Combined environmental and refrigeration system
10/1979
10/02/1979US4169356 Refrigeration purge system
08/1979
08/23/1979WO1979000571A1 Method and apparatus for heating by heat pumping
08/22/1979EP0003723A2 Method and apparatus for heating by heat pumping
05/1979
05/01/1979CA1153954B Cooling method and arrangement
05/01/1979CA1053569A1 Cooling method and arrangement
04/1979
04/18/1979EP0001382A2 Methods and installations for producing utilisable energy and/or cold from heat
04/17/1979US4149389 Heat pump system selectively operable in a cascade mode and method of operation
01/1979
01/02/1979CA1045392A1 Cold generation process
08/1977
08/16/1977US4041724 Installation for heating a fluid, preferably water, in a conventional central heating system, using the waste heat produced by a number of refrigerators
07/1977
07/26/1977US4037426 Cold producing process
06/1977
06/07/1977US4028079 Cascade refrigeration system
05/1977
05/24/1977US4025326 Heat reclaiming system
01/1977
01/04/1977US4000626 Liquid convection fluid heat exchanger for refrigeration circuit
10/1976
10/05/1976US3984050 Heat pump system
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