| Patents for F25D 21 - Defrosting; Preventing frosting; Removing condensed or defrost water (6,980) |
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| 07/31/1984 | US4462216 In a water drainage system for removing condensate from an evaporator |
| 07/18/1984 | EP0113610A1 Refrigerated display cabinet |
| 07/17/1984 | US4459826 Refrigerator |
| 07/17/1984 | US4459816 Heat pump |
| 07/06/1984 | EP0082144A4 Refrigerator defrost control. |
| 07/03/1984 | US4457139 Refrigerated display case having ambient air defrost |
| 05/29/1984 | US4450691 Frost detecting device |
| 05/23/1984 | EP0108906A2 Defrosting method for the evaporator of a refrigerator machine used, for example, as a heat pump |
| 05/22/1984 | US4449374 Combination hot gas and air defrost refrigerated display case |
| 05/22/1984 | CA1167656A1 Household refrigerator defrost system |
| 05/08/1984 | CA1166861A1 Refrigerant gas heater system for display cabinets |
| 04/17/1984 | CA1165576A1 Heat pump system adaptive defrost control system |
| 04/04/1984 | EP0104306A1 Heat pump |
| 04/03/1984 | US4439998 Apparatus and method of controlling air temperature of a two-evaporator refrigeration system |
| 04/03/1984 | US4439995 Air conditioning heat pump system having an initial frost monitoring control means |
| 04/03/1984 | US4439993 Wide island air defrost case utilizing air transfer circulating means |
| 04/03/1984 | US4439992 Open top refrigerated case with defrost air intake and colliding band air defrost |
| 04/03/1984 | CA1164969A1 Control for timed operation of ice maker |
| 03/15/1984 | WO1984001019A1 Improved optical defrost apparatus |
| 03/06/1984 | CA1163347A1 Fail-safe electronically controlled defrost system |
| 02/28/1984 | US4433555 Defroster for a refrigerator |
| 02/21/1984 | US4432211 Defrosting apparatus |
| 02/14/1984 | US4431905 Condensate evaporator |
| 02/14/1984 | CA1162269A1 Refrigerator defrost control with control of time interval between defrost cycles |
| 02/14/1984 | CA1162268A1 Thermal delay demand defrost system |
| 01/31/1984 | US4428207 Dehumidifier |
| 01/31/1984 | US4428206 Means for detecting the accumulation of frost in a low temperature refrigeration system |
| 01/10/1984 | CA1160070A1 Well type refrigerated case with defrost air intake and colliding band air defrost |
| 01/03/1984 | US4423601 Water defrost evaporator with non-uniform water distribution |
| 12/27/1983 | US4422305 Cold storage element, mounting assembly and air control slats therefor |
| 12/20/1983 | CA1158877A1 Method and means controlling defrost cycles of a cooling unit |
| 11/29/1983 | US4417452 Heat pump system defrost control |
| 11/22/1983 | CA1157283A1 Air defrost for low bed refrigerated display cases, utilizing sill-mounted auxiliary fan |
| 11/15/1983 | US4414822 Refrigerated display case with colliding band air defrost |
| 10/26/1983 | EP0092089A2 Defrosting device for a refrigerator |
| 10/25/1983 | US4411139 Defrost control system and display panel |
| 10/25/1983 | CA1155670A1 Island refrigerated display case with air defrost |
| 10/18/1983 | US4410033 Combination coupling retainer and support for a heat exchange unit |
| 10/18/1983 | US4409795 Demand defrost system |
| 10/11/1983 | US4408465 Multiband refrigerated display case having a top access opening |
| 10/05/1983 | EP0089991A1 Method and arrangement for maintaining a frost-free freezer. |
| 10/04/1983 | US4407138 Heat pump system defrost control system with override |
| 09/27/1983 | US4406133 Control and method for defrosting a heat pump outdoor heat exchanger |
| 09/20/1983 | US4404852 Frost sensor |
| 09/20/1983 | US4404816 Modular refrigeration assembly having air defrost system |
| 08/30/1983 | US4400949 Frost detector for refrigerating apparatus |
| 08/23/1983 | US4399662 Island refrigerated display case with air defrost |
| 08/17/1983 | EP0085740A1 Control unit for refrigerating apparatus |
| 08/02/1983 | US4395887 Defrost control system |
| 07/27/1983 | EP0084467A1 Defrost programmer for a multi-station refrigeration plant |
| 07/26/1983 | CA1150529A1 Temperature probe for air conditioning device |
| 07/12/1983 | US4392358 Apparatus and method of detecting failure in a refrigerator defrost system |
| 07/12/1983 | US4392357 Method and means controlling defrost cycles of a cooling unit |
| 06/29/1983 | EP0082144A1 Refrigerator defrost control. |
| 06/28/1983 | US4389856 Refrigerant gas heater system for display cabinets |
| 06/28/1983 | US4389852 One and a half band refrigerated display case |
| 06/07/1983 | CA1147569A1 Two stage control circuit for reversible air cycle heat pump |
| 05/31/1983 | US4385505 Air conditioner |
| 05/31/1983 | US4385502 Defrost control device and method of operating such |
| 05/17/1983 | US4384282 Device for indicating a freezing temperature in a selected location |
| 05/17/1983 | US4383415 Refrigeration and water condensate removal apparatus |
| 04/14/1983 | WO1983001293A1 Method and arrangement for maintaining a frost-free freezer |
| 04/05/1983 | US4378679 Air conditioning apparatus |
| 03/15/1983 | CA1142765A1 Assembly for maintaining a freezer frost-free |
| 03/08/1983 | US4375752 Air conditioning apparatus |
| 03/01/1983 | US4375155 Reach-in refrigerated display case with ambient air defrost |
| 03/01/1983 | CA1141980A1 Adaptive defrost control system |
| 02/15/1983 | US4373350 Heat pump control/defrost circuit |
| 02/15/1983 | US4373349 Heat pump system adaptive defrost control system |
| 02/01/1983 | US4370867 Open top refrigerated display case with ambient air defrost |
| 01/25/1983 | US4369632 Refrigerated merchandiser display case |
| 01/25/1983 | US4369631 Refrigerated merchandizer display case adapted for energy conservation |
| 01/20/1983 | WO1983000211A1 Refrigerator defrost control |
| 01/18/1983 | US4369350 Electric defroster heater mounting arrangement for stacked finned refrigeration evaporator |
| 01/18/1983 | CA1139575A1 One and a half band refrigerated display case |
| 01/18/1983 | CA1139574A1 Single air conduit refrigerated display case having ambient air defrost |
| 01/12/1983 | EP0069172A1 Central heating systems |
| 01/11/1983 | US4367632 Flexible door operating mechanism for refrigerated merchandizer display cabinet |
| 01/04/1983 | CA1138666A1 Multiband open front refrigerated case with air defrost |
| 12/28/1982 | US4365486 Water-cooled heat-accumulating type drink cooling system |
| 12/22/1982 | EP0067523A1 Frost sensing apparatus |
| 12/15/1982 | EP0066862A1 Demand defrost system |
| 12/08/1982 | EP0065995A1 Water-cooled heat-accumulating type drink cooling system |
| 12/07/1982 | CA1136874A2 Refrigeration circuit defrost system, method and components |
| 11/30/1982 | US4361012 Energy efficient refrigerated merchandiser display case |
| 11/24/1982 | EP0065088A2 Temperature-controlled refrigeration and deepfreeze area with a volume of 50 000m3 and above with a device for equalising pressure differences |
| 11/16/1982 | US4358933 Household refrigerator defrost system |
| 11/02/1982 | US4356703 Refrigeration defrost control |
| 10/27/1982 | EP0063351A2 Defrost control system and display panel |
| 10/27/1982 | EP0063178A1 Method of operating a heat pump |
| 10/06/1982 | EP0061697A1 Cold storage accumulator with mounting means and air-regulating louvres |
| 10/05/1982 | US4352272 Heat pump system |
| 10/05/1982 | CA1132808A1 Refrigerated display case using air defrost and supplementary heater |
| 10/05/1982 | CA1132807A1 Glass door merchandiser with ambient air defrost |
| 10/05/1982 | CA1132806A1 One and a half band refrigerated display case |
| 09/28/1982 | CA1132679A2 Refrigeration system control method and apparatus |
| 09/21/1982 | US4350025 Refrigerant evaporator |
| 09/21/1982 | US4350021 Device for preventing icing in an air conditioning unit for motor vehicles |
| 09/21/1982 | US4350020 Process for producing heat by means of a heat pump operated with a fluid mixture as working agent and air as heat source |
| 09/14/1982 | US4348870 Temperature probe for air conditioning device |