Matches 1 - 50 out of 76 1 2 >


Match Document Document Title
US20110209489 Heat pump defrost control  
An electronic defrost system consisting of a circuit board designed to implement defrost cycle of an air source heat pump outdoor coil during the off-cycle period. off-cycle is when the house...
US20150184921 HEAT PUMP CONTROLLER WITH USER-SELECTABLE DEFROST MODES AND REVERSING VALVE ENERGIZING MODES  
A heat pump controller for use in a heat exchange system includes a computing device and a user interface coupled to the computing device. The computing device is configured to initiate a defrost...
US20150047375 DEFROST OPERATION MANAGEMENT IN HEAT PUMPS  
In various implementations, a heat pump may include heating operations and defrost operations. The heat pump may monitor cycle time(s) for one or more of the operations. Defrost operation(s) in...
US20140150479 Secondary Defrost for Heat Pumps  
Frost may accumulate on a heat pump. In various implementations, a primary defrost operation and/or a secondary defrost operation may be utilized to remove at least a portion of the frost from the...
US20140216078 REDUCED ENERGY HEAT PUMP DEFROST FOR UNOCCUPIED SPACE  
Embodiments are directed to determining, by a controller comprising a processor, that a coil associated with a heat pump is subjected to a defrost cycle, determining, by the controller, that at...
US20080196418 Method and Control for Preventing Flooded Starts in a Heat Pump  
A heat pump is provided with an improvement while switching from heating/cooling mode to a defrost mode. Prior to initiation of a defrost mode, an electronic expansion device is moved to an open...
US20120055179 DSM DEFROST DURING HIGH DEMAND  
A method includes providing a standard supply of electrical power to a defrost heater during a standard defrost cycle for a refrigeration system of an appliance, detecting a high energy demand...
US20150082818 SYSTEM AND METHOD OF FREEZE PROTECTION OF A HEAT EXCHANGER IN AN HVAC SYSTEM  
A system and method of heat exchanger freeze protection for an HVAC system by operating an indoor unit assembly and an outdoor unit assembly in a cooling mode and operating a fan at an initial...
US20120031127 Defrost Fan Control Device  
A defrost fan control device for a refrigerator is provided. The device comprises a container, a heat exchanger, a chamber, a suction pump, a condensate spraying device, an evaporation coil, and a...
US20090249795 Thermo-electric defrosting system  
A refrigeration unit (40) having a defroster (30) has a refrigeration compartment (44), an evaporator coil (26) having an amount of crystallized water being aggregated thereon from air and a...
US20140352335 ADAPTIVE DEFROST  
Adaptive defrost systems, computer program products, and methods are provided. A defrost cycle is initiated, and an actual time of defrost (TOD) is determined based on the defrost cycle....
US20120055181 Cooling system and defrosting control method thereof  
A cooling system including an evaporator to exchange heat with air, a frost detector installed on the evaporator to detect frost, and a control unit to determine whether a current time corresponds...
US20130312436 HEAT PUMP WITH IMPROVED DEFROST CYCLE AND METHOD OF DEFROSTING A HEAT EXCHANGER  
Heat pumps with improved defrost cycles, methods of defrosting heat exchangers, and methods of improving the effectiveness of defrost cycles of heat pumps, for example, having a microchannel...
US20150184920 HEAT PUMP CONTROLLER CONFIGURABLE BETWEEN A PLURALITY OF DEFROST MODES  
A heat pump controller for use in a heat exchange system includes a first input connector, a second input connector, and a computing device. The first input connector is configured to be coupled...
US20120047920 METHOD AND APPARATUS USING EVAPORATOR FAN POWER REQUIREMENTS TO DETERMINE DEFROST CYCLE FOR A REFRIGERATOR APPLIANCE  
A refrigerator and a method of operating a refrigerator to determine the time at which to initiate a defrost cycle is provided. Changes in the voltage provided to an evaporator fan are used to...
US20130086928 REFRIGERATOR AND CONTROL METHOD THEREOF  
A refrigerator includes a low-temperature storage compartment damper to control supply of cool air to a low-temperature storage compartment, a high-temperature storage compartment damper to...
US20150241111 Electric Heat Defrost Alogrithm  
A method of operating an HVAC system is provided. The method comprises, when a defrost mode of the HVAC system ends and a defrost recovery mode of the HVAC system begins, continuing to operate a...
US20150047380 REFRIGERATING MACHINE HAVING TUBE-COOLED EVAPORATOR & AIR-COOLED EVAPORATOR  
A refrigerating machine having tube-cooled evaporator & air-cooled evaporator includes a refrigerating device (1) and a defroster (4). The refrigerating device (1) includes a compressor (11), a...
US20120067072 METHODS, SYSTEMS, AND DEVICES FOR CONTROLLING ANTI-SWEAT HEATERS  
The various embodiments disclosed herein relate to anti-sweat heater systems for refrigeration units. More specifically, certain embodiments relate to anti-sweat heater control systems having one...
US20140196484 Defrosting A Heat Exchanger In A Heat Pump By Diverting Warm Refrigerant To An Exhaust Header  
Heat pumps with improved defrost cycles and methods of defrosting heat exchangers, for example, having microchannel outdoor heat exchangers. A heat exchanger has three types of connection points...
US20140026601 Defrosting A Heat Exchanger In A Heat Pump By Diverting Warm Refrigerant To An Exhaust Header  
Heat pumps with improved defrost cycles and methods of defrosting heat exchangers, for example, having microchannel outdoor heat exchangers. A heat exchanger has three types of connection points...
US20150184924 HEAT PUMP CONTROLLER FOR USE IN MULTIPLE TYPES OF HEAT EXCHANGE SYSTEMS  
A heat pump controller for use in a heat exchange system including an external heat exchanger, a compressor, a reversing valve, and an internal heat exchanger is provided. The heat pump controller...
US20130192280 REFRIGERATOR AND DEFROSTING METHOD THEREOF  
A refrigerator according to the present invention includes a compressor compressing a coolant, a condenser condensing the coolant compressed in the compressor, an expander through which the...
US20130098077 HIGH PEFORMANCE REFRIGERATOR HAVING SACRIFICAL EVAPORATOR  
A high performance refrigerator includes a cabinet with a refrigerated interior and a refrigeration fluid circuit having first and second evaporators located within the cabinet and separated from...
US20070144187 Defrosting method of air conditioner  
A defrosting method of an air conditioner is disclosed. The air conditioner has an indoor unit having an indoor heat-exchanger, an indoor blower fan, an auxiliary heater, an outdoor unit having an...
US20140123690 METHOD FOR IMPROVING EFFICIENCY OF A REFRIGERATOR APPLIANCE DURING A DEFROST CYCLE  
A method for operating a refrigerator appliance during a defrost cycle of the refrigerator appliance is provided. The method includes deactivating a compressor of the refrigerator appliance at a...
US20090266093 Refrigerating air conditioning system  
A refrigerating air conditioning system is provided with a refrigerant circuit which includes a compressor 3, an indoor heat exchanger 6, a first pressure reducing device 10, an outdoor heat...
US20140345309 REFRIGERATING AND AIR-CONDITIONING APPARATUS  
A refrigerating and air-conditioning apparatus performs, even during a heating operation under air conditions leading to formation of frost, a defrosting operation while simultaneously continuing...
US20060273120 ADAPTIVE SANITATION SYSTEM  
A method for altering an initiation time of an apparatus sanitation cycle based upon a base line flow rate. The method may include determining an actual flow rate through the apparatus, comparing...
US20130098076 HIGH PERFORMANCE REFRIGERATOR HAVING DUAL EVAPORATOR  
A high performance refrigerator includes a cabinet with a unitary refrigerated interior and a refrigeration fluid circuit having first and second evaporators located within the cabinet and...
US20150059375 AIR CONDITIONER FOR VEHICLE WITH HEAT PUMP CYCLE  
An air conditioner for a vehicle includes a vapor compression refrigeration cycle switchable between a heat pump cycle and a cooler cycle, a heat core configured to heat air to be blown into a...
US20110016896 Air conditioner for vehicle with heat pump cycle  
An air conditioner for a vehicle includes a vapor compression refrigeration cycle switchable between a heat pump cycle and a cooler cycle, a heat core configured to heat air to be blown into a...
US20150089966 USING WEATHER DATA IN HEAT PUMP DEFROST CONTROL  
A method of operating a heat pump system is provided, the heat pump system having at least a controller and configured to operate at least two defrost cycles. The method comprises receiving, at...
US20110094245 DEFROSTING SYSTEM AND METHOD OF REFRIGERATION  
Disclosed is a defrosting system and a defrosting method of a refrigerator, the system including an evaporator configured to reduce an ambient temperature by heat exchange through movement of...
US20080271470 Memory Wire Rotary Actuator  
A timer is provided. The timer includes a rotatable electrically non-conducting ratchet gear, an electrically conducting pawl mechanism, and an electronic drive circuit. The ratchet gear has a...
US20110088415 ADAPTIVE DEFROST CONTROLLER FOR A REFRIGERATION DEVICE  
A system and method for controlling automatic defrost of a refrigerator device are provided. The system adaptively moves the defrost cycle to low usage times based on an evaluation of compressor...
US20130031921 REFRIGERATING AND AIR-CONDITIONING APPARATUS  
A refrigeration cycle that is formed by connecting a compressor, a condenser, expansion means, and an evaporator and that performs cooling operation; an evaporator heating device that heats the...
US20130305749 DSM ENABLING OF ELECTRO MECHANICALLY CONTROLLED REFRIGERATION SYSTEMS  
An energy saving defrost control system for reducing power consumption of an electromechanically controlled refrigerator is provided. The system includes a defrost timer configured to control a...
US20120047921 DSM ENABLING OF ELECTRO MECHANICALLY CONTROLLED REFRIGERATION SYSTEMS  
An energy saving defrost control system for reducing power consumption of an electromechanically controlled refrigerator is provided. The system includes a defrost timer adapted to control a...
US20050056033 Walk-in refrigeration unit control and monitoring system  
A method for monitoring and controlling of a walk-in refrigeration unit is provided. The method comprises setting at least one of a threshold and timing control values associated to operating...
US20090308089 Control System, Integrated Control Apparatus, And Control Program  
An object of the present invention is to provide a control system, an integrated control apparatus, and a control program that are capable of well maintaining freshness and quality of food...
US20080223049 Adaptive defrost control for frozen product dispensers  
An adaptive defrost control for a frozen product machine implements an algorithm that utilizes various operating parameters of the machine to adaptively adjust the time interval between successive...
US20070125103 Electronic defrost timer for mechanical refregerator  
An electronic defrost timer for a mechanical refrigerator is disclosed, which includes an input unit applying its power to the defrost timer and receiving an input of time for controlling the...
US20120266621 CONTAINER REFRIGERATION SYSTEM  
A container refrigeration system includes a refrigerant circuit configured to perform a refrigeration cycle and including a main circuit in which a compressor, a condenser, an expansion valve, and...
US20140260384 APPLIANCE USING HEATED GLASS PANELS  
Appliances are provided with one or more heated glass panels that provide a uniform and controllable source of heat. The heated glass panels can generate heat for any desired purpose, such as...
US20100089081 VENDING MACHINE AND METHOD FOR DEFROSTING  
A method includes sensing an exposure of a refrigerated compartment of a vending machine to ambient air and, in response, sensing an initial temperature of the refrigerated compartment. The method...
US20150027144 AIR CONDITIONER AND CONTROL METHOD THEREOF  
An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at...
US20110185755 Cooling apparatus and frost detecting method thereof  
A cooling apparatus including a frost sensor to sense frost, a multiplexer having a first input terminal, to which the frost sensor is connected, and a second input terminal as a non-connected...
US20140053581 COOLING APPARATUS AND CONTROL METHOD THEREOF  
A cooling apparatus includes a storage compartment, an evaporator to cool air in the storage compartment by evaporating a refrigerant, a compressor to compress the refrigerant evaporated by the...
US20130067943 System and Method for Oil Return in an HVAC System  
A system and a method are provided for returning oil in a heating, ventilation, and air conditioning (HVAC) system by determining when an ambient zone temperature is equal to or less than a...

Matches 1 - 50 out of 76 1 2 >