| Patents for F24F 3 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems (19,462) |
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| 02/08/1990 | WO1990001132A1 A dehumidifier |
| 02/08/1990 | DE3823653C1 Method for operating air-conditioning units and apparatus for carrying out the method |
| 02/06/1990 | US4898087 Laminarizer |
| 02/06/1990 | CA1265435A1 Method for producing suspension in air of ultra-fine mist particles |
| 01/31/1990 | EP0140940B1 Sequenced modular bed carousel dehumidifier |
| 01/31/1990 | CN1039297A Air conditioning process and apparatus |
| 01/30/1990 | US4896514 Air-conditioning apparatus |
| 01/25/1990 | WO1990000705A1 Air conditioning system control |
| 01/25/1990 | DE3814233A1 Device for mixing flow-medium streams |
| 01/24/1990 | CN2051724U Water/wind cooling type air conditioner |
| 01/23/1990 | CA1264598A1 Ventilation device for ventilation of a room |
| 01/17/1990 | CN1038874A Process and apparatus for cooling fluid |
| 01/17/1990 | CN1038871A Air conditioning process and apparatus therefor |
| 01/17/1990 | CN1038774A Method and apparatus for evaporation of liquids |
| 01/16/1990 | US4894071 Portable air cleaner |
| 01/16/1990 | CA1264444A1 Multiple filter unit, particularly for ventilation and air conditioning systems for motor vehicles and closed environments, and provided with efficiency checking means |
| 01/10/1990 | CN2050949U Duster with electric fun for cooling |
| 01/03/1990 | EP0348504A1 Air-conditioner using regenerative cooling cycle |
| 01/03/1990 | CN2050566U Static electricity-removing negative ion generator core |
| 01/03/1990 | CN2050565U Steam air-humidification apparatus |
| 12/28/1989 | WO1989012790A1 Air-conditioning device for premises |
| 12/28/1989 | DE3821173A1 Vorrichtung zum klimatisieren von raeumen Apparatus for air-condition of evacuate |
| 12/27/1989 | EP0348011A2 Ceiling mounted air cleaner |
| 12/26/1989 | US4889543 Air filtering system |
| 12/19/1989 | US4887438 Desiccant assisted air conditioner |
| 12/12/1989 | US4886769 Active gas adsorbing element and method of manufacturing |
| 12/12/1989 | US4886110 HVAC zone control system |
| 12/07/1989 | DE3836696C1 Lock for transporting material between clean rooms |
| 12/06/1989 | EP0345149A2 Fragrant air supplying method and supplying system |
| 12/05/1989 | US4884416 Electronic air-cleaning air conditioner automatically washed by water |
| 12/05/1989 | CA1263542A1 Environmental test chamber |
| 11/29/1989 | EP0343938A1 Space heating & ventilating systems for buildings |
| 11/28/1989 | US4883511 Laminar flow multiplane matrix ceiling system |
| 11/28/1989 | US4882913 Slide plate economizer |
| 11/22/1989 | CN1037389A Cyclic bacterial remover for air |
| 11/21/1989 | US4881957 Air filtration units and methods employing dust as filtration media and air flow rate as a directly controlled parameter |
| 11/15/1989 | EP0341241A1 Hypobaric storage of respiring plant matter without supplementary humidification |
| 11/14/1989 | US4880581 Means and method for aseptic particle-free production of articles |
| 11/09/1989 | DE3813900A1 Method for humidifying supply air |
| 11/08/1989 | EP0340687A2 Filtered environmental control system |
| 11/08/1989 | EP0340433A2 Tunnel module for creating a clean space by the laminar flow technique |
| 11/08/1989 | CN2047346U 家用窗式空气过滤器 Household Window type air filter |
| 11/07/1989 | US4878357 Air-conditioning apparatus |
| 11/02/1989 | EP0191835B1 Device for producing a flow of dry air |
| 10/31/1989 | US4877428 Ionic air cleaner for homes and motor vehicles |
| 10/31/1989 | US4877080 Process and apparatus for cooling a fluid |
| 10/31/1989 | US4876858 Air conditioner and method of dehumidifier control |
| 10/26/1989 | DE3812094A1 Ceiling structure for clean rooms |
| 10/25/1989 | CN2046606U Temp. controller for output of aseptic air |
| 10/24/1989 | US4875520 Heat exchanger; desiccant particles bound to plastic strip |
| 10/19/1989 | DE3811780A1 Working cabinet |
| 10/18/1989 | EP0337972A2 A method and device for the supply of conditioned air |
| 10/18/1989 | CN2046193U Automatic return wind transom of air conditioner |
| 10/17/1989 | US4874127 Climate control apparatus |
| 10/17/1989 | US4874038 Economical house air cooling arrangement |
| 10/17/1989 | US4873914 Clean room system and unit for the same clean room system |
| 10/17/1989 | US4873835 Process for the simultaneous exchange of heat and matter through a porous wall |
| 10/11/1989 | EP0336455A2 Air cleaner |
| 10/10/1989 | US4872400 Laboratory work station with controllable environment |
| 10/10/1989 | US4872397 Personal environmental module |
| 10/10/1989 | US4872315 Heat exchanger and systems and methods for using the same |
| 10/04/1989 | EP0335670A2 Humidity conditioner |
| 10/04/1989 | CN2045326U Purifier for cigarette smoke |
| 10/03/1989 | US4871607 Alumina-silica gel on corrugated sheets |
| 10/03/1989 | US4870831 Multi-type air conditioner system with oil level control for parallel operated compressor therein |
| 09/28/1989 | DE3908512A1 Fan |
| 09/28/1989 | DE3908511A1 Fan |
| 09/28/1989 | DE3908498A1 Fan |
| 09/28/1989 | DE3908492A1 Fan |
| 09/27/1989 | EP0333959A1 Heater |
| 09/27/1989 | CN2045080U 帘盒式空调器 Cassette curtain air conditioner |
| 09/27/1989 | CN1035883A Improvements in heating and cooling systems |
| 09/26/1989 | US4869074 Regenerative refrigeration cycle apparatus and control method therefor |
| 09/26/1989 | US4869070 Method of and means for controlling the condition of air in an enclosure |
| 09/26/1989 | CA1260823A1 Method of and means for controlling the condition of air in an enclosure |
| 09/20/1989 | CN2044699U Physical and chemical drier |
| 09/19/1989 | US4867764 Convertible air cleaner fan |
| 09/14/1989 | DE3807052A1 Protective device for non-smokers, in particular in restaurants and the like |
| 09/13/1989 | CN2044333U Return aircourse filter for conditioner |
| 09/12/1989 | US4864830 Air conditioning process and apparatus |
| 09/06/1989 | CN2044052U Cooler for multi-path water meter |
| 09/06/1989 | CN2043862U Refrigerator-type operation board of kitchen with recovery of heat energy |
| 09/05/1989 | US4864459 Laminar flow hood with static electricity eliminator |
| 09/05/1989 | US4862950 Apparatus and method for controlling the environment in a substantially enclosed and pressurized work area such as a textile manufacturing plant |
| 08/31/1989 | DE3805458A1 Air-conditioning plant with heat exchanger in the room to be air-conditioned, supply air flowing through the heat exchanger |
| 08/30/1989 | CN2043730U Revolving wheel dehumidification apparatus |
| 08/29/1989 | US4860548 Air conditioning process and apparatus therefor |
| 08/29/1989 | US4860420 Method of fabricating a clean room filter bank |
| 08/22/1989 | US4858627 Smoker's hat |
| 08/16/1989 | CN2042935U Electric fan auxiliary apparatus for lowering temp. by atomised water |
| 08/10/1989 | WO1989007226A1 Forced air ventilation system |
| 08/10/1989 | DE3902977A1 Sorption apparatus for sorbing active gas |
| 08/09/1989 | EP0327507A2 Device for the purification of air |
| 08/09/1989 | EP0326726A1 Clean room system and unit for the same clean room system |
| 08/02/1989 | CN2042167U Energy-saving self-combustion air conditioner used for both heating and cooling |
| 08/02/1989 | CN2042113U Dual-purpose refrigerating and muffling device utilizing the afterheat of waste gas from internal-combustion engine |
| 08/01/1989 | US4852637 Thermostatic controlled system |
| 07/27/1989 | WO1989006774A1 Improvements in heating and cooling systems |
| 07/26/1989 | CN1034139A Apparatus for deodorisation |
| 07/25/1989 | US4851018 Installation for the storage and transfer of objects in a very clean atmosphere |