Patents
Sitemap › F25 - Refrigeration or cooling; Combined heating and refrigeration systems; Heat pump systems; Manufacture or storage of ice; Liquefaction or solidification of gases › F25D - Refrigerators; Cold rooms; Ice-boxes; Cooling or freezing apparatus not covered by any other subclass › F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water
Patents for F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water (6,980)
12/1991
12/25/1991CN2091437U Automatic defrost temp. controller with electron brain for cold storage
12/17/1991CA1293310C Adaptive control system
12/03/1991US5069043 Refrigeration system with evaporative subcooling
12/03/1991US5069042 Cleanable condensate trap
11/1991
11/28/1991DE4115891A1 Circulated cold air refrigeration appts. - detects circulated air flow to activate automatic defrosting process
11/27/1991CN2089601U Anti-cold leakage systme of refrigerator water drain hole
11/19/1991US5065593 Method for controlling indoor coil freeze-up of heat pumps and air conditioners
11/19/1991US5065584 Hot gas bypass defrosting system
10/1991
10/30/1991EP0454123A2 Cooling apparatus
09/1991
09/24/1991US5050400 Simplified hot gas defrost refrigeration system
09/18/1991EP0446528A2 An apparatus preventing frost from being formed
09/17/1991US5048303 Open front refrigerated display case with improved ambient air defrost means
09/17/1991CA1288962C Self-draining base pan for an air conditioner
09/10/1991US5046330 Refrigerator humidifier with terraced condensate collection tray
09/10/1991US5046328 Refrigeration apparatus with article preserving and displaying chamber
09/10/1991US5046324 Defrosting controller for refrigeration systems
09/05/1991WO1991013299A1 Hot gas defrost refrigeration system
08/1991
08/29/1991DE4028787C1 Vehicle air conditioner evaporator desiccator - has pipe system separate from heating circuit through heat exchanger
08/27/1991US5042268 Refrigeration
08/27/1991US5042267 Combination evaporator and radiant heater defrost means
08/22/1991DE4004746A1 Evaporation appts. for water produced by condensation in refrigerator - has trough with barriers forming large surface area
08/21/1991EP0442434A2 Refrigerated cabinet
08/21/1991EP0442396A2 Retail shelving for merchandise
08/20/1991US5040378 No frost cooling process for a cooling range above zero degrees Celsius
08/13/1991US5038575 Refrigerator with defrost override system
08/08/1991DE4006468C1 Defroster for refrigerator using compressor motor - supplied with electricity via thermostat switch controlled by sensor and actuator
07/1991
07/31/1991EP0438396A1 Article display apparatuses and elongated, deflectable racks
07/23/1991US5033803 Display case
07/17/1991EP0436758A1 Flow cooler
07/17/1991CN2081069U Universal device for defrosting without energy consumption
07/16/1991US5031413 Low-temperature foods preserving case and its temperature control method
07/12/1991CA2032661A1 Throughflow cooler
07/10/1991CN2080645U Freon (r12) defrosting device by flushing for cold storage
06/1991
06/20/1991CA2006079A1 Lock defrosting device
06/12/1991EP0431797A2 Refrigeration
06/11/1991US5022233 Ice bank control system for beverage dispenser
05/1991
05/30/1991WO1991007994A1 Method for preventing bacterial growth in a food processing plant and such a plant for carrying out the method
05/25/1991CA2025274A1 Method of assembling a refrigerator cabinet
05/23/1991CA2030288A1 Refrigeration
04/1991
04/30/1991US5011101 Surface mounting spring clip
04/23/1991US5009080 Low-temperature show case
04/16/1991CA1283158C Glass cover
04/10/1991CN1050604A Energy efficient frost-free refrigerator
04/09/1991CA1282605C Anti-condensation means for glass front display cases
04/02/1991US5003788 Gas engine driven heat pump system
04/02/1991US5003786 Refrigerating apparatus
03/1991
03/26/1991US5002658 Water purification device and method
03/20/1991CN1012104B Method for controlling defrosting in refrigerating cycle
03/19/1991US5000010 Refrigerator with hot liquid loop/case protection
03/12/1991US4998412 Blockage alert and purge system
02/1991
02/28/1991DE3928078A1 Thermostatic defrost limiter switching evaporator fan - utilises both contact movements of thermostat with hysteresis for joint control of fan and heater relays
02/26/1991US4995244 Refrigerating machine comprising an end-of-defrosting detector
02/19/1991US4993233 Demand defrost controller for refrigerated display cases
02/05/1991US4989413 Method for controlling the defrosting of refrigerator-freezer units of varying degrees of frost accumulation
01/1991
01/22/1991US4986087 Fan coil unit
01/16/1991EP0408152A1 Humidifying cooling element
12/1990
12/25/1990US4979431 Gaseous flow construction of box member for refrigerated transportion and box member for refrigerated transportation using the same
12/25/1990US4979377 Refrigerated
12/19/1990EP0403459A1 Refrigerated display cabinet
12/19/1990EP0316385B1 Transport and storage system for heat-sensitive products
12/19/1990CN1047917A Nonfrost refrirating method used in cooling over o deg.c
12/18/1990US4977754 Next-to-be-purchased cold beverage merchandiser
12/13/1990DE3918721A1 Switchgear housing cooler and air-conditioning system - has condensate trap to prevent entry into housing
12/11/1990CA1277503C Power switch and baffle assembly for a refrigerator
12/04/1990US4974418 Heat pump defrosting operation
12/04/1990US4974417 Heat pump defrosting operation
11/1990
11/20/1990US4970874 Adjustable height grille cover assembly for a refrigeration apparatus
11/20/1990CA1276476C Hot gas defrost system for refrigeration systems and apparatus therefor
10/1990
10/23/1990US4964281 Low-temperature showcase
10/10/1990EP0391177A2 Outlet nozzle
10/09/1990US4961320 Conveying and storage device for thermosensitive products
10/02/1990US4959968 Method for controlling the defrosting of refrigerator-freezer units of varying degrees of frost accumulation
10/02/1990US4959967 Automatic device for producing ice cubes
09/1990
09/26/1990EP0388550A1 Refrigerator door frame with insulated mullion
09/26/1990CN1045640A General ice-boxes' removing-frost method having reducing loss and its apparatus
09/19/1990EP0387680A2 Refrigerating appliance with thermostatic temperature control arrangement
09/11/1990CA1274007A1 Control circuit for a refrigerating device
08/1990
08/29/1990CN2061261U Automatic temp. limiting and frost removing device for refrigerator
08/28/1990US4951473 Heat pump defrosting operation
08/22/1990EP0383222A2 Refrigerating device
08/22/1990CN2060865U Electronic controller of refrigerator
08/21/1990US4950869 Frost control system for high-speed mechanized doors
08/21/1990US4950316 Dehumidification system
08/21/1990US4949554 Single pane, curved glass lid, frozen food merchandiser
08/07/1990US4945732 Refrigerated display case with a damper controlled defrosting mechanism
08/07/1990CA1272517A1 Integrated semiconductor resistance temperature and resistive heater
08/01/1990EP0379645A1 Refrigerator
07/1990
07/31/1990US4944158 Method of defrosting a refrigerating circuit for use in cooling a vehicular chamber
07/17/1990US4941289 Refrigerator door frame with insulated mullion
07/10/1990US4939908 Apparatus for adjustably controlling the size of an ice bank
07/04/1990EP0376389A1 Cold generator with an end-of-defrost sensor
07/03/1990US4938027 Apparatus and method for defrosting refrigerator in vacation mode
06/1990
06/19/1990US4934150 Method and apparatus for controlling ice thickness
06/13/1990EP0372595A1 Installation for controlling the defrosting of a refrigerating means
06/12/1990US4932217 Process for controlling a heater, in particular a defrost heater for refrigerating plants
06/12/1990CA2005262A1 Method and apparatus for controlling ice thickness
06/05/1990US4930176 Combination heated scraper and brush
06/05/1990CA1269856A1 Low-temperature showcase
05/1990
05/29/1990US4928498 Method and device for compression of gases
05/23/1990CN1008131B Air conditioning apparatus
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