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| Number | Title | Issue Date |
| 7963117 | DC-powered HVAC system An HVAC system for a motorized vehicle or vessel is provided that includes a variable-speed compressor, a variable-speed condenser fan and a variable-speed evaporator fan. The HVAC system further includes a DC-power system for supplying DC power to the variable-spee... | 06/21/2011 |
| 7797954 | Cooling system, particularly for a motor vehicle, and method for cooling a heat source In a cooling system, particularly a cooling system for motor vehicles, including a cooling circuit and a refrigerating circuit which are coupled to one another via a refrigerant/coolant heat exchanger and a third medium/coolant heat exchanger arranged in the cooling... | 09/21/2010 |
| 7426837 | Refrigerator A refrigerator includes a compressor compressing a refrigerant, a first liquid heat exchanger performing heat exchange between the refrigerant and a first liquid heat medium, an expander expanding the refrigerant, a second liquid heat exchanger performing heat excha... | 09/23/2008 |
| 7356998 | Flash tank of two-stage compression heat pump system for heating and cooling Disclosed herein is a flash tank of a two-stage compression heat pump system that can perform cooling and heating with a separate type intercooler and a high-stage compressor protecting device. The system comprises a fluid-level detecting sensor for detecting the fl... | 04/15/2008 |
| 7347056 | Vehicle air-conditioning system A vehicle air-conditioning system provided with a refrigeration cycle system is provided. The air-conditioning system includes an evaporator outlet air target temperature setting unit which sets the target temperature of air at an outlet of an evaporator at a predet... | 03/25/2008 |
| 7334419 | Heat pump water heater A heat pump water heater system including a water storage tank and a heat exchange system. The heat exchange system includes a heat absorber positioned below the water storage tank and a heat rejecter in fluid communication with the heat absorber and positioned with... | 02/26/2008 |
| 7331118 | Conditioning system for a vehicle and method of drying an evaporator of an air conditioning unit provided in such a conditioning system A conditioning system for a vehicle comprises an evaporator, positioned in an air conducting channel means, of an air conditioning unit, by means of which evaporator heat and/or moisture can be removed from the air to be introduced into a vehicle interior, a heating... | 02/19/2008 |
| 7290400 | Stationary vehicle air conditioning system and method The invention pertains to a stationary vehicle air conditioning system with a refrigerant circuit, in which a compressor circulates refrigerant through a refrigerant circuit including at least one condenser. The one compressor may be powered by the vehicle's mechani... | 11/06/2007 |
| 7284742 | Flow control valve A flow control valve for controlling water flow, for example through a refrigeration unit condenser spray cooling system. The valve includes an arm that carries a paddle adapted to be placed in an air stream for deflection by an air current. Movement of the paddle c... | 10/23/2007 |
| 7281388 | Apparatus to use a refrigerator in mobile computing device An apparatus to use a refrigerator in a mobile computing device is described. In one embodiment, the refrigerator includes a cold reservoir to absorb heat generated by a heat generating unit of the mobile device. A heat exchanger is used to dissipate heat of a hot r... | 10/16/2007 |
| 7263848 | Heat pump system A heat pump is operable in a heating mode and a cooling mode and includes two identical heat exchangers. The heat exchangers alternate between operating as a condenser and an evaporator as the heat pump switches between the heating mode and the cooling mode. The hea... | 09/04/2007 |
| 7234646 | Heat pump hot-water supply system A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger,... | 06/26/2007 |
| 7207182 | Swamp cooler cooling system A swamp cooler cooling system for cooling down a swamp cooler includes a first conduit that has an inlet, a first outlet and a second outlet. The inlet is fluidly coupled to a water supply. A second conduit has a first end and a second end. The first end is fluidly ... | 04/24/2007 |
| 7181920 | Cooling plant for a fluid with control of variables Cooling plant for a “cooled” fluid, able to cool and/or dry the fluid by means of cooling substantially to a pre-established temperature, the plant comprising a heat exchanger (17), to cool the fluid, by means of heat exchange with a “cooling” fluid i... | 02/27/2007 |
| 7161315 | Self dust-off apparatus and method thereof A self dust-off apparatus includes a fan and a controller. The fan, which can be driven to rotate clockwise or counterclockwise, is installed in a projector. The controller is employed to direct the rotational direction (clockwise or counterclockwise) of the fan. In... | 01/09/2007 |
| 7155922 | Energy efficient heat pump systems for water heating and air conditioning A heat pump system for providing water heating and air conditioning, comprising one or more compressors for circulating a refrigerant in the system, a hot water tank having a heat exchanger for heating and storing the hot water, an outdoor heat exchanger and a fan f... | 01/02/2007 |
| 7104079 | Heat pump A heat pump apparatus that having a refrigerating cycle including a compressor, a gas cooler, a pressure reducing device and an evaporator and is designed so that water can be heated by the gas cooler. A refrigerant such as CO2 or the like working in a su... | 09/12/2006 |
| 7096683 | Vehicle cooling system An integrated cooling system having two separate evaporator coils is provided. Each evaporator coil has its own shutoff, thereby allowing for individual control over the cooling of each of two vehicle spaces. The evaporator coils may be disposed within the vehicle t... | 08/29/2006 |
| 7096925 | Modular electric HVAC systems for vehicles Components for HVAC systems used in hybrid and fuel cell vehicles are mounted in modular configuration on a frame with air conditioning components connected to one another by metal pipes welded to the components. An alternating current motor, integral with a compres... | 08/29/2006 |
| 7047751 | Desiccant refrigerant dehumidifier systems A method for conditioning air for an enclosure in which a supply air stream is cooled with a refrigerant system containing a variable compressor by passing the air over a cooling coil to reduce the temperature thereof; the thus cooled supply air stream is then passe... | 05/23/2006 |
| 7010936 | Method and apparatus for highly efficient compact vapor compression cooling The subject invention pertains to a method and apparatus for cooling. In a specific embodiment, the subject invention relates to a lightweight, compact, reliable, and efficient cooling system. The subject system can provide heat stress relief to individuals operatin... | 03/14/2006 |
| 6968708 | Refrigeration system having variable speed fan A transcritical refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. A fan moves outdoor air that exchange... | 11/29/2005 |
| 6953227 | High-power multi-device liquid cooling A cooling system is presented. The system includes a cooling circuit and at least one electronic component coupled to a surface. One or more heat dissipation structures are in thermal contact with the at least one electronic component. At least one sliding seal mech... | 10/11/2005 |
| 6755038 | Multi-unit air conditioner and method for controlling the same Multi-unit air conditioner and method for controlling the same, the multi-unit air conditioner including a plurality of outdoor heat exchangers, a plurality of outdoor fans for cooling the outdoor heat exchangers, and control means for controlling rotation speeds of... | 06/29/2004 |
| 6711909 | Outdoor fan control system of air conditioner and control method thereof An outdoor unit includes a pulse width modulation compressor, an outdoor heat exchanger. First and second outdoor fans are positioned near to the outdoor heat exchanger. The operation modes of the first and second outdoor fans are determined in accordance with the a... | 03/30/2004 |
| 6698220 | Automotive air conditioning system In an automotive air conditioning system according to the present invention, a thin condenser 2 of a condensing unit portion 10 installed on a flat roof of a vehicle such as a bus is provided in such a manner as to be inclined downwardly from the front to... | 03/02/2004 |
| 6526768 | Apparatus and method for controlling the temperature of an integrated circuit device An apparatus and method for controlling the temperature of an integrated circuit device includes a refrigerant system having a coolant loop containing refrigerant, an evaporator, a compressor, and a condenser. The condenser has a variable speed fan contro... | 03/04/2003 |
| 6467288 | Heat-pump water heater In a heat-pump water heater, a control unit has a heat-radiation determining means for determining a heat radiation from refrigerant to outside air in an air heat exchanger based on a water temperature flowing into a water heat exchanger, and the control ... | 10/22/2002 |
| 6415746 | Apparatus and method for controlling duty ratio for cooling fan associated motor of vehicle In apparatus and method for controlling a cooling fan associated motor at a pulse duty ratio, the cooling fan is revolved by the cooling fan associated motor to cool a radiator of a vehicular engine coolant and a condenser of a refrigerant of a vehicular ... | 07/09/2002 |
| 6397610 | Method for controlling air conditioner/heater by coil temperature An air conditioner/heater automatically operates in either air conditioning or heating mode by coil temperatures of indoor and outdoor heat exchangers. In air conditioning mode, the rotating speed of indoor fan motor is proportional to the ambient tempera... | 06/04/2002 |
| 6339933 | Device for air conditioning a motor-vehicle passenger compartment, with improved ventilation control In a device for air conditioning a motor-vehicle passenger compartment, a control module adjusts electrical power supplied to a motor-driven fan unit delivering airflow to a condenser of the device. Means are furthermore provided for recording an air thro... | 01/22/2002 |
| 6202430 | Method and apparatus for detecting excessive pressure in a refrigerant fluid in the condenser of an air conditioning and heating installation In a heating and air conditioning installation for a motor vehicle, the refrigerant fluid circuit includes a cooling (air conditioning) loop including a condenser, and a heating loop. In order to detect excess pressure in the refrigerant fluid in the cond... | 03/20/2001 |
| 6196010 | Temperature control zone for compressor/condenser air intake A temperature control zone enclosure for exterior compressor/condensers has been developed to serve as a means of protecting the compressor/condensers from inclement weather and to automatically allow those units to operate at optimum temperature. The enc... | 03/06/2001 |
| 6161394 | Method and apparatus for condensing and subcooling refrigerant This invention provides a refrigeration system which includes in a closed loop connection a compressor for compressing a refrigerant into a condenser for condensing the compressed refrigerant into a liquid refrigerant, a control valve to controlling the d... | 12/19/2000 |
| 6055819 | Apparatus and method for preventing an evaporating for an air conditioning system form freezing A method for preventing an evaporator of an air conditioner from freezing comprises the steps of (1) detecting an outdoor temperature, (2) determining whether or not the outdoor temperature is 20° C., (3) determining whether or not the outdoor temperatur... | 05/02/2000 |
| 5927087 | Refrigerating cycle In a refrigerating cycle (air conditioner) using mixture refrigerant, a mixing ratio of the refrigerant in a refrigerant circuit is measured by a mixing ratio detector, and a controller receives the detection signal to open a control valve when the mixing... | 07/27/1999 |
| 5901786 | Axial fan sandwich cooling module incorporating airflow by-pass features A cooling module for an automotive vehicle is disclosed. The module includes a pair of bypass doors for directing a flow of air around either of the condenser or radiator in the module depending upon the demands for engine cooling, air conditioning, and a... | 05/11/1999 |
| 5873257 | System and method of preventing a surge condition in a vane-type compressor A method of preventing compressor surge in an air conditioning system comprises: 1) determining the refrigerant flow rate at the compressor; 2) determining the input pressure and output pressure at the compressor; 3) determining the pressure ratio (output... | 02/23/1999 |
| 5806330 | Method of controlling a refrigeration system and filter/drier/receiver therefor A thermistor probe is formed in a closed end tube and the probe is inserted through the header of a receiver/drier in a refrigeration system for sensing the temperature of the saturated refrigerant vapor in the receiver/drier. The sensed temperature is em... | 09/15/1998 |
| 5799867 | Engine-driven heat pump apparatus and method for stable operation of heat pump An engine-driven heat pump apparatus having a refrigerant circulation line which includes at least one inside heat-exchanger for exchanging heat between the air in a room and the refrigerant, and a pressure-controlling device for substantially maintaining... | 09/01/1998 |
