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| Number | Title | Issue Date |
| 7409984 | Air-conditioner for vehicle use When a switching signal to switch the mode to the defroster mode is generated and the target air volume is smaller than a predetermined air volume α, the target air volume is automatically increased to the predetermined air volume α. In doing so, an increase start... | 08/12/2008 |
| 7404435 | Air conditioner for vehicle use An air conditioner for automotive vehicle use intended to prevent a defrosting operation in an instantaneous foot-defroster mode. The DEF mode in which air mainly from a DEF opening is blown toward the windshield is set by an exclusive front DEF switch. The F/D mode... | 07/29/2008 |
| 7234516 | Air conditioner for vehicle use When it is assumed that a vehicle is stopped or parked after its engine was stopped and a predetermined period of time has passed, a cold wind side air mixing door, hot wind side air mixing door, cold wind door and rear cold wind side air mixing door are totally clo... | 06/26/2007 |
| 7024878 | Cleaning system for refrigerator condenser This cleaning system includes a compressor driven by a motor, a condenser; a cooling fan for directing an air stream at the condenser during normal operation, a motor drive system for driving the fan, and a timing device for reversing the rotational direction of the... | 04/11/2006 |
| 6983794 | Heat exchanger unit The present invention provides a heat exchanger unit that can appropriately inhibit freezing of a heat exchange element even in cold climates. The heat exchanger unit performes heat exchange and ventilation between an indoor space and an outdoor space, and is provid... | 01/10/2006 |
| 6792769 | Cleaning system for refrigerator condenser This cleaning system includes a compressor driven by a motor, a condenser; a cooling fan for directing an air stream at the condenser during normal operation, a motor drive system for driving the fan, and a timing device for reversing the rotational direction of the... | 09/21/2004 |
| 6626237 | Heat recovery apparatus and method of minimizing fouling in a heat recovery apparatus Apparatus for recovering heat from a gas flow defines a heat transfer space through which the gas flow can be directed, the heat transfer space having a first region and a second region, a gas inlet and a gas outlet. A first valve arrangement alters the d... | 09/30/2003 |
| 6427772 | Electronic refrigeration control system The present invention is direct to a system and method for electronically controlling the refrigeration and/or heating of the product storage compartment in a vending machine. The system includes a temperature sensor for sensing the temperature in the pro... | 08/06/2002 |
| 6223817 | Electronic refrigeration control system The present invention is direct to a system and method for electronically controlling the refrigeration and/or heating of the product storage compartment in a vending machine. The system includes a temperature sensor for sensing the temperature in the pro... | 05/01/2001 |
| 5971066 | System and method for prevention of windshield fogging in a motor vehicle A method and system for controlling a heating, ventilation and air-conditioning (HVAC) system of a vehicle to prevent fogging of a windshield of the automotive vehicle is provided. The method and system include determination of whether the vehicle has bee... | 10/26/1999 |
| 5957037 | Heat exchange apparatus A heat exchange apparatus for use in the production of sugar confectionery or for tempering chocolate including a vessel with a tubular heat transfer surface. The vessel defines an inlet and outlet higher than the inlet. Heat exchangers, such as steam jac... | 09/28/1999 |
| 5799728 | Dehumidifier Apparatus for dehumidifying air comprising two cooling coils operable in a first mode for circulating coolant at a temperature above 32° F. and below the dew point of the air through one of the coils and for circulating coolant at a temperature below 32Â... | 09/01/1998 |
| 5782290 | Tubular heat exchange system A tubular heat exchange systems is disclosed. An outer tube section, though which a first medium passes, also contains inner coils, through which a second medium passes. The first medium can be drawn into the outer tube at each end of the tube using pumps... | 07/21/1998 |
| 5755282 | Air conditioning apparatus preventing misting An air-conditioning apparatus for use in a vehicle includes bypass means for forming a bypass duct to allow the air which has passed through an evaporator to bypass an heater core, opening/closing means for opening and closing the bypass duct, and refrige... | 05/26/1998 |
| 5632334 | Heat recovery ventilator with room air defrosting feature A heat recovery ventilator for use in ventilating a building, the ventilator having a single two-position damper operable such that in one damper position, heat is exchanged between a first flow of fresh air passing through the first path and a second flo... | 05/27/1997 |
| 5572877 | Air conditioner for vehicles An air conditioner for vehicles can operate at a dehumidifying-operation mode including at least a dry-cooling or a dry-heating mode. The air conditioner comprises a plurality of discharge ports including a defroster discharge port and discharge port swit... | 11/12/1996 |
| 5538072 | Method for preventing overshoot during heat pump defrost using memorized supplemental heater capacity from previous defrost cycle A method of controlling a current defrost cycle for an outdoor coil of a heat pump system, the heat pump system having a plurality of supplemental heating elements for heating an air stream passing from an indoor coil to an air supply duct during defrost ... | 07/23/1996 |
| 5325912 | Air conditioning system with reduced energy consumption during defrosting for an electric vehicle An air conditioning system suitable for use in an electric vehicle. In the system, an air conditioning mechanism for air-conditioning the driver and passenger room of the vehicle is disposed in the vehicle. A sensor is attached to at least one window or d... | 07/05/1994 |
| 5257736 | Self-regulating air ventilation apparatus The present ventilating system is used for homes and buildings located in cold climate areas. The system includes a heat exchanger for extracting heat from the inside air discharged to the exterior and transferring said heat to the outside air admitted in... | 11/02/1993 |
| 4729089 | Transient suppression for microprocessor controls for a heat pump air conditioning system A method of operating a switching relay with inductive coils by a microprocessor control to prevent the transient electro-magnetic noise caused by the switching relay from resetting the microprocessor and restarting the program at the beginning. Prior to ... | 03/01/1988 |
| 4483388 | Apparatus and method for providing failsafe supplemental heat _regulation in an air conditioning control Apparatus and a method for providing failsafe supplemental heat operation of an air conditioning control are disclosed. Operating power to a microprocessor control is discontinued when the air conditioning unit is placed in a supplemental heat mode by the... | 11/20/1984 |
| 4206612 | Refrigeration system control method and apparatus A refrigeration system contains a common compressor supplying refrigerant to a plurality of evaporators that are refrigerated and defrosted independently of one another. Individual refrigeration/defrost controls are provided in solid state form for the re... | 06/10/1980 |
| 4188794 | Freezer with rapid defrosting A food storage compartment of a freezer accumulates frost. At selected times, a heat source of large thermal capacity transforms a retained body of water or ice to steam. The steam condenses upon and melts the frost. A portion of the melt is retained to p... | 02/19/1980 |
| 4182403 | Arrangement for transferring heat from the exhaust air leaving an enclosed volume to the input air supplied to said volume There is provided a heat exchanger system for transfer of heat in the warm exhaust air from a mine to the cold input air flow to the mine. In the system there is provided a heat supply means, which supplies heat, recovered from the exhaust air, to the inp... | 01/08/1980 |
| 4122892 | Devices for heating premises by the use of heat pumps and method therefor Two evaporators are alternately fed with freon with subsequent timed reversal of the air flow thereabout so as to eliminate trouble resulting from coil-icing and to further increase the heat recovery of building heating systems.... | 10/31/1978 |
| 4119142 | Arrangement for transferring heat from the exhaust air leaving an enclosed volume to the input air supplied to said volume There is provided a heat exchanger system for transfer of heat in the warm exhaust air from a mine to the cold input air flow to the mine. In the system there is provided a heat supply means, which supplies heat, recovered from the exhaust air, to the inp... | 10/10/1978 |
| 4102390 | Control system for heat pump and furnace combination A residential-type, heat pump-furnace system with control means for sequencing the activation of the heat pump and furnace operation depending on the heating load. The heat pump remains operational until the air off the furnace has reached some predetermi... | 07/25/1978 |
