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 13 - Compression machines, plant, or systems, with reversible cycle
Patents for F25B 13 - Compression machines, plant, or systems, with reversible cycle (6,597)
06/1989
06/27/1989US4841738 Method and apparatus of automatically switching between cooling and heating modes of an air conditioner
06/20/1989US4840042 Heat pump system
06/20/1989US4840037 Refrigerator with cold accumulation system
06/15/1989DE3741288A1 Motor-vehicle air-conditioning system which can be switched over to cooling or heating operation
06/14/1989EP0320333A1 Device for precisely adjusting the angular orientation of a steering wheel on a steering column
05/1989
05/30/1989US4833893 Refrigerating system incorporating a heat accumulator and method of operating the same
05/24/1989EP0316685A2 Air conditioner
05/05/1989WO1989003962A1 Air-conditioner using regenerative cooling cycle
05/02/1989US4825664 High efficiency heat exchanger
05/02/1989CA1253353A1 Ice-maker heat pump using water supercooling
04/1989
04/18/1989US4821792 Heating and cooling system for motor vehicles
04/12/1989CN1032389A Air conditioning apparatus
03/1989
03/15/1989EP0306587A2 Heat pump system with hot water device
03/14/1989US4812250 Working fluid mixtures for use in thermodynamic compression cycles comprising trifluoromethane and chlorodifluoroethane
03/07/1989US4809516 Residential heating cooling and energy management system
02/1989
02/22/1989EP0303952A2 Method for controlling a refrigeration system and apparatus for implementing said method
02/15/1989EP0303245A2 Method for controlling a refrigeration system and apparatus for implementing said method
02/08/1989CN2032264U Electromagnetic reciprocating refrigerating compressor
02/07/1989US4802529 Refrigerant-heating type heating apparatus
02/01/1989EP0301503A2 Heat pump system
01/1989
01/31/1989US4800736 Heat pump
01/24/1989US4799363 Room air conditioner
01/18/1989EP0299361A2 Demand defrost control method and apparatus
01/17/1989US4798059 Air conditioner with heat regeneration cycle
01/10/1989US4796437 Multifluid heat pump system
01/03/1989CA1248201A1 Residential heating, cooling and energy management system
12/1988
12/27/1988US4793143 Enthalpic heat pump desiccant air conditioning system
12/21/1988EP0295894A1 Transport refrigeration system having means for enhancing the capacity of a heating cycle
12/13/1988US4790142 Method for minimizing cycling losses of a refrigeration system and an apparatus using the method
10/1988
10/11/1988US4776180 Updraft integrated heat pump
10/04/1988US4774813 Air conditioner with defrosting mode
09/1988
09/22/1988WO1988007162A1 System for heating and cooling liquids
09/21/1988EP0282782A2 Multiple room type air conditioning system and control method therefor
09/21/1988EP0282772A2 Operating method for an air conditioning system
09/20/1988US4771610 Multiroom air conditioner
09/13/1988US4770000 Air conditioner
08/1988
08/30/1988US4766735 Inverter-aided multisystem air conditioner with control functions of refrigerant distribution and superheating states
08/30/1988US4766734 Heat pump system with hot water defrost
08/24/1988EP0279143A2 Integrated heat pump system
08/09/1988US4761964 Apparatus for enhancing the performance of a heat pump and the like
08/02/1988US4760707 Thermo-charger for multiplex air conditioning system
07/1988
07/05/1988US4754614 Prime-motor-driven room warming/cooling and hot water supplying apparatus
06/1988
06/30/1988DE3643620A1 Air-conditioning system for motor vehicles which can be switched over to cooling operation or heating operation
06/30/1988DE3643563A1 Air-conditioning system for motor vehicles which can be switched over to cooling or heating operation
06/29/1988EP0272953A1 Mixtures of working fluids for use in thermodynamic compression cycles, comprising trifluoromethane and chlorodifluoroethane
06/28/1988US4753080 Cold storage method and apparatus
06/21/1988CA1238202A1 Refrigerant reversing valve
06/07/1988US4748818 Transport refrigeration system having means for enhancing the capacity of a heating cycle
05/1988
05/26/1988DE3638802A1 Air-conditioning system for cooling or heating the passenger compartment of vehicles
05/24/1988US4745770 Heater/cooler unit
04/1988
04/27/1988EP0265123A2 Compartmentalized transport refrigeration system
04/27/1988EP0265121A2 Compartmentalized transport refrigeration system
04/26/1988US4739628 Extended range heat pump system and centrifugal compressor for use therewith
04/19/1988CA1235303A1 Air conditioning system and method of operation
04/05/1988US4735054 Method for minimizing off cycle losses of a refrigeration system during a cooling mode of operation and an apparatus using the method
03/1988
03/23/1988EP0260803A2 Solvent cleaning apparatus
03/15/1988US4730990 Pulse combustion engine and heat transfer system
03/10/1988WO1988001716A1 Welded contact safety technique
03/02/1988EP0257576A2 Method and apparatus for avoiding failures caused by contacts-welding in heating and cooling systems
03/02/1988CN86105016A Air, water-water combined hot screw pump
03/01/1988US4727727 Integrated heat pump system
03/01/1988US4727726 Refrigeration cycle apparatus
02/1988
02/10/1988CN86205603U Portable multi-purpose pipe wrench
02/02/1988US4722195 Heat pump with a reservoir storing higher pressure refrigerant of non-azeotropic mixture
01/1988
01/28/1988WO1988000676A1 Air-conditioning system
01/26/1988US4720983 Heater/cooler unit
01/26/1988US4720982 Multi-type air conditioner with optimum control for each load
01/26/1988US4720981 Cooling of air conditioning control electronics
01/12/1988US4718248 Four element refrigeration heat pump and geothermal control systems
01/05/1988US4716741 Air-conditioning installation for motor vehicles, especially for passenger motor vehicles
12/1987
12/15/1987US4712383 Compartmentalized transport refrigeration system
12/08/1987US4711095 Compartmentalized transport refrigeration system
12/08/1987US4711094 Reverse cycle heat reclaim coil and subcooling method
12/02/1987CN87202622U Middle pressure directional flow passage refrigerator with double heat sources screw heat pump
12/01/1987US4709554 Air conditioning apparatus
11/1987
11/17/1987US4706883 Pump heating system
11/17/1987US4706469 Refrigerant flow control system for use with refrigerator
11/17/1987US4706468 Compartmentalized transport refrigeration system
11/12/1987EP0191801A4 Residential heating, cooling and energy management system.
10/1987
10/27/1987US4702088 Compressor for reversible refrigeration cycle
10/13/1987US4698981 Air conditioner having a temperature dependent control device
10/13/1987US4698978 Method of controlling a heating and cooling system
10/07/1987EP0240441A2 Three function heat pump system and method
09/1987
09/23/1987EP0237822A2 Refrigerant flow control system for use with refrigerator
09/22/1987CA1227049A1 Method primarily for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method
09/16/1987EP0236787A2 Heating and cooling device for automative vehicles
09/15/1987US4693089 Three function heat pump system
08/1987
08/25/1987US4688396 Air-conditioning hot-water supply device
08/25/1987US4688394 Automotive heater and air conditioner and process therefor
08/25/1987US4688390 Refrigerant control for multiple heat exchangers
08/19/1987EP0233073A2 Triple integrated heat pump circuit
08/11/1987US4685510 Pulse combustion engine and heat transfer system
08/11/1987US4685307 Residential heating, cooling and energy management system
08/11/1987US4685306 Compartmentalized transport refrigeration system
07/1987
07/14/1987US4679411 Stepped capacity constant volume building air conditioning system
06/1987
06/30/1987US4676072 Bypass system for a dual refrigeration cycle air conditioner
05/1987
05/12/1987US4664179 Heat exchanger
04/1987
04/07/1987US4655051 Heat exchange system with reversing receiver flow
03/1987
03/31/1987US4653287 System for heating and cooling liquids
03/11/1987EP0213540A2 Air conditioning apparatus
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