| Patents for F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water (6,980) |
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| 05/22/1990 | US4926932 Plate type heat exchanger |
| 05/03/1990 | DE3836989A1 Icing protection for an evaporator of an air-conditioning installation |
| 05/02/1990 | EP0365650A1 NOFROST COOLING PROCESS FOR A TEMPERATURE RANGE ABOVE 0oC. |
| 04/24/1990 | US4918940 Air conditioning apparatus |
| 04/18/1990 | EP0364239A2 Heat pump defrosting operation |
| 04/18/1990 | EP0364238A2 Heat pump with adaptive frost determination function |
| 04/18/1990 | EP0364237A2 Heat pump with single exterior temperature sensor |
| 04/17/1990 | US4916912 Heat pump with adaptive frost determination function |
| 04/17/1990 | CA1267951A1 Transport refrigeration unit defrost control system |
| 04/05/1990 | WO1990003542A1 Energy efficient frost-free refrigerator |
| 04/04/1990 | EP0361307A2 Heat transfer barrier for a condenser loop of a refrigerator cabinet |
| 04/03/1990 | US4913223 Apparatus for defreezing frozen foods |
| 03/27/1990 | US4910966 Heat pump with single exterior temperature sensor |
| 03/21/1990 | EP0167579B1 Measuring probe for determining the formation of ice or snow |
| 03/21/1990 | CN2054891U Humidifier of refrigerator |
| 03/13/1990 | US4907420 Dual wall evaporator pan |
| 02/27/1990 | US4903500 Methods and apparatus for detecting the need to defrost an evaporator coil |
| 02/27/1990 | CA1266187A1 Refrigerated case with ventilated glazed frame |
| 02/21/1990 | CN2053315U High-speed defrosting board |
| 01/30/1990 | US4896785 Combination chest freezer and glass cover |
| 01/24/1990 | EP0351512A2 Automatic apparatus for producing ice cubes |
| 01/23/1990 | US4896052 Overflow and leakage detection system for an air conditioning unit |
| 01/16/1990 | US4893481 Convector tray |
| 01/03/1990 | EP0288465B1 Refrigerated case with ventilated glazed frame |
| 01/02/1990 | CA1264114A1 Refrigeration system for a counter-top or wall- mounted vending machine |
| 12/20/1989 | CN2049745U Clock-control differential pressure type auto frost-thawing air-conditioner |
| 12/19/1989 | US4887436 Defrosting system for a heat exchanger |
| 12/06/1989 | EP0345098A2 Refrigeration system |
| 12/05/1989 | US4884415 Heat transfer barrier for the yoder loop of a refrigerator cabinet |
| 12/05/1989 | US4884414 Adaptive defrost system |
| 11/28/1989 | US4882911 Apparatus for removing condensate water from a compressor-operated cooling device |
| 11/28/1989 | US4882908 Demand defrost control method and apparatus |
| 11/21/1989 | US4881315 Method of assembling an anti-sweat heater in a refrigerator cabinet |
| 11/16/1989 | DE3915075A1 Refrigerating appliance |
| 11/14/1989 | US4879881 Energy efficient frost-free refrigerator |
| 11/14/1989 | US4879878 Air damper assembly for refrigerator/freezer |
| 11/14/1989 | CA1262944A1 Refrigerator temperature and defrost control |
| 11/08/1989 | CN2047352U Freezer temp. controlling and intelligent frost-thawing device |
| 11/02/1989 | WO1989010523A1 Nofrost cooling process for a temperature range above 0°c |
| 11/02/1989 | EP0340115A1 Central refrigeration plant supplying enclosures with at least two temperatures, and defrosting method for such a central plant |
| 10/31/1989 | US4876861 Defrost-water vaporizer of a refrigerator |
| 10/12/1989 | DE3909262A1 Control system, atmospheric cooling device, and a method for operating the cooling device |
| 10/11/1989 | EP0336810A1 Container with a humidifier |
| 10/10/1989 | CA1262209A1 Method of and apparatus for checking the icing of evaporators in refrigeration systems |
| 09/26/1989 | CA1260109A1 Adaptive defrost control for a refrigerator |
| 09/21/1989 | WO1989008807A1 Process and device for defrosting the evaporator of a cooling unit |
| 09/21/1989 | WO1989008418A1 Article display apparatuses and elongated, deflectable racks |
| 09/21/1989 | DE3808230A1 Verfahren und vorrichtung zum abtauen von eis an einem verdampfer eines kuehlaggregats Method and device for defrosting of ice in a vaporizer a kuehlaggregats |
| 09/20/1989 | CN1035716A Defrostingsensor for refrigerating system |
| 09/13/1989 | CN2044336U Electronic temp. controlled protector |
| 09/05/1989 | US4862701 Moisture detection |
| 08/30/1989 | EP0330230A1 A defrosting method of a refrigerating circuit used for a refrigerator car |
| 08/29/1989 | US4860551 Frost sensor for an appliance |
| 08/23/1989 | CN1034992A Ice bank control system for beverage dispenser |
| 08/22/1989 | US4858443 Refrigeration with quick cooling system |
| 08/16/1989 | EP0328151A2 Heating control method, particularly for a thawing device in a refrigeration installation |
| 08/15/1989 | US4856293 Air-conditioning control system for automotive vehicles |
| 08/08/1989 | US4855567 Frost control system for high-speed horizontal folding doors |
| 08/02/1989 | EP0325844A1 Evaporator with improved condensate collection |
| 08/01/1989 | US4852303 Refrigerator door frame with insulated mullion |
| 07/27/1989 | WO1989006609A1 Evaporator for an air-conditioner |
| 07/25/1989 | US4850204 Adaptive defrost system with ambient condition change detector |
| 07/25/1989 | US4850200 Refrigerating circuit device for air conditioning apparatus and control method thereof |
| 07/19/1989 | EP0324375A1 Evaporator of an air conditioning apparatus |
| 07/19/1989 | CN1034052A Method for controlling defrosting in refrigerating cycle |
| 07/18/1989 | US4848856 Article display apparatuses and elongated, deflectable racks |
| 07/13/1989 | DE3839508A1 Vorrichtung zum regulierbaren steuern der groesse einer eisbank Apparatus for controlling the controllable groesse an ice bank |
| 07/04/1989 | US4843835 Refrigerator drain funnel |
| 07/04/1989 | US4843833 Refrigerator)freezer combination |
| 07/04/1989 | US4843831 Refrigerator control system |
| 07/04/1989 | US4843830 Differential ice sensor and method |
| 06/28/1989 | CN2040233U Water drainer for power-saving refrigerator |
| 06/20/1989 | US4840040 Island type refrigeration display cabinet |
| 06/20/1989 | US4840033 Ice builder and control system therefor |
| 06/06/1989 | US4835984 Evaporator condensate pan with integral trap |
| 05/24/1989 | EP0316385A1 Transport and storage system for heat-sensitive products. |
| 05/24/1989 | CN2038219U Water catcher for refrigerator |
| 05/23/1989 | US4831833 Frost detection system for refrigeration apparatus |
| 05/17/1989 | CN2037832U Multifunctional electronic control and protection device for refrigerator |
| 05/16/1989 | US4829780 Evaporator with improved condensate collection |
| 05/10/1989 | EP0315439A2 Ice bank control system for beverage dispenser |
| 05/10/1989 | CN2037457U Multifunction electronic controller of frigidarium |
| 05/09/1989 | US4827729 Method of removing a mist coating from the interior face of a glazed panel of a refrigerating cabinet |
| 04/26/1989 | EP0312853A2 Refrigerating appliance, particularly for a switch cabinet |
| 04/25/1989 | US4823558 Plastic pan assembly for use in air conditioners and refrigerators |
| 04/25/1989 | US4823556 Electronic ice bank control |
| 04/19/1989 | EP0312467A1 Controlbox for a deep-freezer |
| 04/18/1989 | US4821530 Air-conditioning refrigerator |
| 04/12/1989 | CN1032389A Air conditioning apparatus |
| 03/21/1989 | US4813241 Low-temperature showcase |
| 03/14/1989 | US4812622 Apparatus for defrosting frozen articles |
| 03/07/1989 | US4809514 Apparatus for removing snow deposited on wall of snow generating apparatus |
| 02/28/1989 | US4808824 Compositional state detection system and method |
| 02/28/1989 | US4808009 Integrated semiconductor resistance temperature sensor and resistive heater |
| 02/08/1989 | CN2032297U Defrosting sensor for refrigeration system |
| 01/18/1989 | EP0299361A2 Demand defrost control method and apparatus |
| 01/11/1989 | EP0298563A1 Collecting device for liquids |
| 01/11/1989 | EP0298416A2 Method of removing the transparency-impairing internal fog layer from refrigerator panes, and refrigerator for carrying out the method |
| 01/03/1989 | US4794764 Article display apparatus |
| 12/13/1988 | US4790144 Defrosting control apparatus for a temperature control system |