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| Number | Title | Issue Date |
| 7836711 | Air conditioner having an ice melting operation terminated on the basis of refrigerant temperature and pressure Based on a result of detection taken by the high-low pressure difference detection means (93, 97) for detecting a difference between a high and a low pressure of a refrigeration cycle, an estimate of whether there is leakage of refrigerant in an expansion val... | 11/23/2010 |
| 7698902 | Defrost operating method for refrigerator The present invention discloses a defrost operating method for a refrigerator which performs a defrost operation by controlling operations of a compressor and a fan on the basis of a continuous operation time of the compressor and surface temperatures of evaporators... | 04/20/2010 |
| 7690210 | Automotive air-conditioning system In an air-conditioner control unit, when pollen mode control is set by a vehicle occupant to perform the pollen mode control that can provide a defogging effect while maintaining the pollen removal effect, the opening of an air inlet door is forcibly set to an insid... | 04/06/2010 |
| 7454919 | Hot-water supply apparatus Defrosting operation is possible by causing refrigerant discharged from a compressor to flow to an outdoor heat exchanger, and returning the refrigerant passed through the outdoor heat exchanger to the compressor through a water-heat exchanger, while operating a pum... | 11/25/2008 |
| 7348522 | Apparatus for thawing frozen food items An apparatus is disclosed for thawing a frozen food item, including a chamber dimensioned to receive the frozen food item, a heat exchanger operable to either heat air in the chamber or to cool the air in the chamber, a fan for creating a flow of the air within the ... | 03/25/2008 |
| 7340907 | Anti-condensation control system An anti-condensation control apparatus for a refrigeration device generally includes a sensor module and a control module. The control module receives an input from the sensor module and compares the input to a set point. The control module generates an output indic... | 03/11/2008 |
| 7320226 | Freezer with defrost function and method for operating the freezer A freezer includes a refrigeration surface that can be frozen, such as an evaporator surface, a heating device for heating the refrigeration surface, and a control circuit for controlling the operation of the heating device in accordance with a timer. The control ci... | 01/22/2008 |
| 7302803 | Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigerant unit There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engag... | 12/04/2007 |
| 7299648 | Refrigeration system of air conditioning apparatuses with bypass line between inlet and outlet of compressor A refrigeration system of air conditioning apparatuses with a bypass line between the inlet and outlet of a compressor. The refrigeration system (1) has an expansion unit (10) to execute adiabatic expansion of refrigerant, an indoor unit (20) wi... | 11/27/2007 |
| 7281898 | Blowing apparatus for refrigerators Disclosed herein is a blowing apparatus for refrigerators. The blowing apparatus includes a centrifugal fan. The centrifugal fan comprises a hub plate connected to a shaft of the motor, a plurality of blades attached to the hub plate in the radial direction of the h... | 10/16/2007 |
| 7275376 | Defrost system for a refrigeration device A defrost system for a temperature controlled storage unit includes an enclosure providing a space for storage of products. A refrigeration system has a supply line and a return line coupled to a cooling element to circulate a refrigerant through the cooling element... | 10/02/2007 |
| 7275387 | Integrated ice and beverage dispenser An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a sep... | 10/02/2007 |
| 7275381 | Light device for refrigerator or freezer A light device for refrigerators or freezers includes a sensor, a first manual switch, a rotatable switch, an interior loop and an alternative current power supply. The interior loop includes an interior circuit, an exterior circuit and a control loop. The alternati... | 10/02/2007 |
| 7251951 | Heated sub-freezing airflow diverter A flow diverter comprises a heat sink array in fluid communication with a turbine outlet and an inlet face of a heat exchanger, the heat sink array comprising a plurality of heat sink elements, the heat sink array being separated from the inlet face by a distance, a... | 08/07/2007 |
| 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 |
| 7234318 | Outdoor, multiple stage, single pass and non-recirculating refrigeration system for rapid cooling of athletes, firefighters and others A multiple stage, single pass and non-recirculating refrigeration system is provided for either outdoor use or for use with temporary structures such as emergency firefighter tents. The refrigeration system utilizes, for example, three evaporative coils in series to... | 06/26/2007 |
| 7228692 | Defrost mode for HVAC heat pump systems A heat pump, and in particular a heat pump for heating a hot water supply is provided with an improved defrost mode. The defrost mode is actuated to remove frost from an outdoor evaporator that may accumulate during cold weather operation. An algorithm for operation... | 06/12/2007 |
| 7219505 | Control stability system for moist air dehumidification units and method of operation A system and humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits that balances humidity control and cooling demand. Each refrigerant circuit includes a compressor, a condenser and an evaporator. A hot gas rehe... | 05/22/2007 |
| 7216493 | Refrigerator methods and apparatus A refrigerator includes a plurality of walls forming a refrigeration compartment, an evaporator is positioned proximate at least one of the walls, a thermal insulator is positioned proximate the evaporator, and an airflow duct is positioned proximate the thermal ins... | 05/15/2007 |
| 7213407 | Wide temperature range heat pump The present invention provides an air-condition heat pump capable of defrosting and air-conditioning at same time. The present invention utilizes at least two evaporators, which harvest the energy from one working evaporator to provide energy for defrost operation o... | 05/08/2007 |
| 7210523 | Vehicle air conditioner A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature a... | 05/01/2007 |
| 7204094 | Air conditioner An air conditioner having a plurality of outdoor units and a plurality of indoor units with a common piping connected via a common piping to transfer refrigerant therebetween, the air conditioner including a first outdoor unit to provide heat, a second outdoor unit ... | 04/17/2007 |
| 7197927 | Sensor for determining the interior humidity and fogging up tendency and fastening device of the sensor A sensor means is proposed to determine an interior humidity and/or an interior volume delimited by a wall, in particular, of a vehicle passenger compartment 3, and a fogging up tendency of an inner surface of the wall, in particular, of a window 5 of ... | 04/03/2007 |
| 7191609 | Cooling apparatus There is provided a cooling apparatus which can improve cooling efficiency of an evaporator while preventing freezing of articles housed in a cooled space thereof. The cooling apparatus comprises: a control device which controls a compressor; and a temperature senso... | 03/20/2007 |
| 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 |
| 7181922 | Automotive air conditioner A cooled air temperature detector detects the temperature of air that has just passed through a refrigerant evaporator. The detector detects air temperatures for a plurality of locations on the cooling unit. When determining a control condition (ON/OFF condition) of... | 02/27/2007 |
| 7178346 | Constant temperature refrigeration system for extensive temperature range application and control method thereof A constant temperature refrigeration system for extensive temperature range application comprising a refrigerator, a low-temperature heat exchanger, a medium-temperature heat exchanger, a high-temperature heat exchanger, a pump, a first solenoid valve, a second sole... | 02/20/2007 |
| 7171817 | Heat exchanger liquid refrigerant defrost system A heat exchanger liquid refrigerant defrost system disclosed herein specifically designed to defrost the coil subsystems used on an outdoor heat exchanger used on a building heat pump unit or combination heat pump/air condition unit. The outdoor heat exchanger conta... | 02/06/2007 |
| 7150158 | Freezing prevention system for refrigeration device and air conditioner using the same A freezing prevention system for a refrigeration device includes a freezing-prevention temperature sensor for detecting a refrigerant temperature in a refrigerant evaporator, and a control unit for controlling operation of a refrigerant compressor based on the detec... | 12/19/2006 |
| 7137262 | Supplemental heat control apparatus and method for freezer/refrigeration equipment A method and apparatus that provides supplemental heat from a heat source based upon the operating environment of a refrigeration or freezer. The supplemental heat is automatically controlled to provide heating to a sealing area to prevent condensation from forming.... | 11/21/2006 |
| 7131284 | Automatic defrost controller including air damper control A damper apparatus for controlling airflow between compartments in a two compartment refrigerator having a door includes a controller for controlling opening and closing of a damper; and a door sensor connected to the controller for detecting when the door is open. ... | 11/07/2006 |
| 7121103 | Vehicle air conditioning system An automobile air conditioning system controls the high pressure of the refrigeration cycle in a wide range of airflows from a low airflow region during an intermediate period to a high airflow region. When a dehumidifying mode is selected, the target high pressure ... | 10/17/2006 |
| 7111472 | Circuit apparatus and configurations for refrigeration systems The proposed design describes a refrigeration system with an evaporator, which allows inherent absorption of heat from the ambient, a condenser returning refrigerant to a liquid state, a compressor delivering refrigerant within the system but with refrigerant flowin... | 09/26/2006 |
| 7109858 | Method and system for efficiently regulating data transmissions A remote device or module sends data to a base station when the change in data from the last transmission exceeds a predetermined threshold. The invention also allows for transmission at a minimal specific time interval. Additionally, the device allows for transmiss... | 09/19/2006 |
| 7104083 | Refrigeration system configuration for air defrost and method A refrigeration system of the type having a compression stage, a condensation stage, an expansion stage and an evaporation stage, comprising a first evaporator group in the evaporation stage. The first evaporator group has two or more evaporators. A first valve is p... | 09/12/2006 |
| 7093462 | Multi-way valve and refrigerating machine with multi-way valve A multi-way valve, particularly for a refrigerant circuit, includes a housing having a number of inlets and outlets and a chamber with a number of seats respectively associated with an inlet or outlet. The multi-way valve also includes a closing element that can mov... | 08/22/2006 |
| 7089752 | Refrigerator and defrosting method thereof A refrigerator and a defrosting method thereof which are capable of achieving an appropriate defrosting operation even when a part of constituent elements included in a defrosting system fails. The defrosting method includes the steps of determining whether or not a... | 08/15/2006 |
| 7076964 | Super-critical refrigerant cycle system and water heater using the same In a heat-pump water heater with a super-critical refrigerant cycle, a valve open degree of a decompression valve is controlled to control a pressure of high-pressure side refrigerant so that a temperature difference between refrigerant flowing out from the water-re... | 07/18/2006 |
| 7073346 | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 07/11/2006 |
| 7059143 | Method and apparatus for measuring and improving efficiency in refrigeration systems An apparatus for optimizing an efficiency of a refrigeration system, comprising means for measuring a refrigeration efficiency of an operating refrigeration system; means for altering a process variable of the refrigeration system during efficiency measurement; and ... | 06/13/2006 |
