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| Number | Title | Issue Date |
| 7273088 | One or more heat exchanger components in major part operably locatable outside computer chassis One or more heat exchanger components of an apparatus are in major part operably locatable outside a computer chassis and serve to reduce one or more temperatures of one or more heat producing components supported with the computer chassis. ... | 09/25/2007 |
| 7261243 | Thermostat responsive to inputs from external devices A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively ... | 08/28/2007 |
| 7259963 | Rack height cooling A data center includes an electronic equipment rack having a front face and a back face and a cooling unit positioned adjacent to the rack, the cooling unit having a front face and a back face, the cooling unit being configured to exhaust cooled air from the front f... | 08/21/2007 |
| 7185502 | Multi-type air conditioner and method for controlling operation of the same Air conditioner, and method for controlling an operation of the same, the air conditioner including a sheath heater in the accumulator for heating the refrigerant in room heating for delaying deposition of frost on the outdoor heat exchanger. The sheath heater inclu... | 03/06/2007 |
| 7174734 | Refrigerator damper with PTC heater actuation A damper in a refrigeration system having a first compartment and a second compartment connectable through a passageway is provided. The damper comprises a damper door, a temperature responsive unit, and a heating element. The damper door is moveable between an open... | 02/13/2007 |
| 7168258 | Real temperature output air conditioner A real temperature output air conditioner which lowers the ambient temperature of an interior space to a desired temperature and, once that has been achieved, delivers a constant flow of air at that specific temperature thereto. The present invention further include... | 01/30/2007 |
| 7032395 | Transport temperature control unit and methods of defrosting an evaporator coil of the same A transport temperature control unit and methods of defrosting an evaporator coil of a transport temperature control unit. The transport temperature control unit includes an evaporator coil, an ambient air temperature sensor for sensing an ambient air temperature, a... | 04/25/2006 |
| 7027958 | Food quality and safety model for refrigerated food A system and method according to the invention includes a communication network and a food product manager in communication with a monitored location through the communication network, wherein the manager receives product-temperature condition information from the m... | 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 |
| 6978630 | Dual-circuit refrigeration system A refrigeration system and method of refrigeration employ dual refrigeration circuits. Each circuit has an independent compressor, condenser and evaporator. In one refrigeration circuit, the flow of the refrigerant from the condenser to the evaporator is regulated i... | 12/27/2005 |
| 6957696 | Combination radiant and forced air climate control system A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling d... | 10/25/2005 |
| 6918259 | Air circulation and filtration system for a refrigerator A refrigerator includes a fresh food stirring fan assembly arranged within a fresh food compartment. The stirring fan assembly functions to recirculate air in order to minimize temperature stratification in the fresh food compartment. The stirring fan assembly prefe... | 07/19/2005 |
| 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 |
| 6250373 | Ceiling mounted apparatus for heating and cooling A ceiling mounted apparatus draws air upwardly through an inlet and processes the air through heat exchange elements before distributing the air downwardly. The air is preferably distributed downwardly by air discharge structure surrounding the heat excha... | 06/26/2001 |
| 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 |
| 6185481 | Air cooled electronic equipment apparatus A semiconductor device provided with a first cooling fan and heat-radiating fins is mounted on a board, and there is provided a second cooling fan for supplying cooling air to the board, such that a flow passage is formed for directing the cooling air, su... | 02/06/2001 |
| 6161765 | Outdoor enclosure with heated desiccant A protective enclosure for housing heat-generating electronics, having a sorption device for controlling humidity and a heater for heating the sorption device. The invention protects electronics placed within the enclosure from the effects of water vapor ... | 12/19/2000 |
| 5934368 | Air-cooled electronic apparatus with condensation prevention A highly reliable electronic apparatus free from condensation in the cabinet of the apparatus. The electronic apparatus has printed circuit boards on which heat emitting semiconductor devices are mounted and a fan. The electronic apparatus further compris... | 08/10/1999 |
| 5730216 | Air conditioning and refrigeration units utilizing a cryogen Air conditioning and refrigeration apparatus for controlling the temperature of a conditioned space to a predetermined temperature band adjacent to a predetermined set point temperature via cooling and heating cycles utilizing a supply of pressurized cryo... | 03/24/1998 |
| 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 |
| 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 |
| 5533568 | Managing supplementary heat during defrost on heat pumps 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 ... | 07/09/1996 |
| 5441098 | System for defrosting frozen packed products Method of thawing deep-frozen packed products in which a relatively dry heated airflow sweeps around the product for a period of time, the duration of which is determined by the temperature measured in the middle of the product. The heat flow rate imparte... | 08/15/1995 |
| 5421399 | Cool/heat pump control circuit for a room air conditioner A control circuit for a cool/heat pump in which two separate motors are utilized, each with a main winding and an auxiliary winding. A single dual rated capacitor is provided in series with both auxiliary windings. A selectively operative switch, which ma... | 06/06/1995 |
| 5332028 | Method and apparatus for controlling supplemental electric heat during heat pump defrost In a heat pump system having supplemental heat for application to the supply air during periods of defrost operation, a "cold blow" condition is avoided by turning on a supplemental heater and by sensing the temperature of the supply air and responsively ... | 07/26/1994 |
| 5016815 | Air conditioner control system for vehicles A control system for an air conditioner for a vehicle effects the switching between a heat mode and a heat/defrost mode on the basis of the ambient temperature and the amount of solar radiation present.... | 05/21/1991 |
| 5002118 | Heat recovery system A vertically situated head exchanger is mounted externally of a building and insulated relative to the ambient air. Fan units are situated within the building preferably between adjacent joists and in the basement and in alignment with the connections to ... | 03/26/1991 |
| 4910967 | Demist controller for automobile air-conditioners A demist controller for an automobile air-conditioner includes a demist judgement unit for judging the need for a demist operation based on the relative humidity in the vicinity of the inside surface of a window glass of the automobile, and a correction u... | 03/27/1990 |
| 4882908 | Demand defrost control method and apparatus A demand defrost controller for a heat pump. The controller compares the temperature of an outdoor heat exchange coil with an enable temperature. A timer is activated when the coil temperature is less than the enable temperature. When the timer senses the... | 11/28/1989 |
| 4840220 | Heat pump with electrically heated heat accumulator A temperature setting unit is operated to set a desired temperature. An indoor temperature detector detects an indoor temperature. A timer is operated to set an operation start time. An indoor unit includes at least an indoor heat exchanger, an air duct a... | 06/20/1989 |
| 4834169 | Apparatus for controlling a refrigerator in low ambient temperature conditions A refrigerator control for operating a refrigerator which may experience an abnormal temperature condition due to operation in low ambient temperatures includes a temperature sensor for sensing the temperature of a portion of a refrigerator compartment in... | 05/30/1989 |
| 4812622 | Apparatus for defrosting frozen articles A defrosting apparatus including a housing defining a space for accommodating therein articles to be defrosted, a heater for heating the air within the housing, and an air circulation fan for circulating the heated air so that it flows through the space. ... | 03/14/1989 |
| 4705100 | Fuel/auxiliary oil thermal management system An arrangement that uses aircraft fuel as a heat sink for aircraft auxiliary oil systems for an aircraft having at least one engine operated by fuel and having an engine interface limit and including a fuel/oil heat exchanger for removing heat from the ai... | 11/10/1987 |
| 4271899 | Heat pump control system The present invention relates to a self-contained air conditioning unit including a reversible refrigeration system and more particularly to a control system having a plurality of sensing means that are effective in maintaining operation of the unit in a ... | 06/09/1981 |
| 4263962 | Heat pump control system A control for a self-contained refrigeration system air conditioner unit having a heating and cooling operation. The control provides for defrosting the evaporator and for supplying supplemental heat under selected temperature conditions. A lack of heatin... | 04/28/1981 |
| 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 |
| 4106690 | Optimum start controller A programmed controller for controlling the start of a heating system includes a clock mechanism to produce a time-variable signal, two temperature transducers, one inside and one outside of the building, and an electronic circuit which is a proportional ... | 08/15/1978 |
| 4105064 | Two stage compressor heating Electrical control means for use in a heat pump system having dual compressors wherein the operation of each compressor can be staged independently and automatically except for those periods when the outdoor heat exchanger is undergoing defrost wherein bo... | 08/08/1978 |
| 4102391 | Heat pump frost control system The present invention relates to a self-contained air conditioning unit including a reversible refrigeration system and more particularly to a control system having a plurality of sensing means that are effective in maintaining operation of the unit in a ... | 07/25/1978 |
| 3996998 | Combination furnace--heat pump unit A heating system for conditioning the air in an enclosure. The heating system includes a furnace, heat pump and control mechanism for coordinating operation thereof.... | 12/14/1976 |
