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| Number | Title | Issue Date |
| 7389649 | Cooling system with variable duty cycle capacity control A control system for a cooling system includes a first sensor for sensing a property indicative of demand for cooling and a controller coupled to the sensor. The controller produces the variable duty cycle control signal in response to the property and causes the co... | 06/24/2008 |
| 7389648 | Pressure regulation in a transcritical refrigerant cycle A refrigerant cycle is provided with a control for an expansion device to achieve a desired compressor discharge pressure. The system operates transcritically, such that greater freedom over compressor discharge pressure is provided. The system's efficiency is optim... | 06/24/2008 |
| 7365982 | Liquid cooling device A liquid cooling device (10) includes a heat sink (12), a reservoir (14) containing liquid therein and distant from the heat sink, and a heat-transfer member. The heat-transfer member includes a heat-absorbing segment (162) contacting the... | 04/29/2008 |
| 7334630 | Closed-loop microchannel cooling system Apparatus and methods according to the present invention utilize micropumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as well as the associated r... | 02/26/2008 |
| 7331191 | Heating, ventilation and air conditioning (HVAC) system and method using feedback linearization A new feedback linearization approach to advanced control of single-unit and multi-unit HVAC systems is described. In accordance with the approach of the invention, this new nonlinear control includes a model-based feedback linearization part to compensate for the n... | 02/19/2008 |
| 7325411 | Compressor loading control A system has a number of parallel flowpath segments between a compressor and an evaporator. One or more valves selectively block and unblock at least one of the segments to provide capacity control. ... | 02/05/2008 |
| 7310231 | Heat sink having magnet array for magneto-hydrodynamic hot spot cooling A heat sink has a plurality of pipes that are connected to an array of magnets. The plurality of pipes are connected to a lid that is operatively connected to an integrated circuit. Temperature sensors are disposed on the lid to measure temperatures of hot spots of ... | 12/18/2007 |
| 7293425 | Thermo siphon chiller refrigerator for use in cold district In order to provide a thermo-siphon chiller refrigerator for use in cold districts which performs natural refrigerant-circulation refrigerating cycle and also can perform a forced refrigerant-circulation refrigerating cycle when outside air temperature is high by us... | 11/13/2007 |
| 7287396 | Evaporator pressure regulator control and diagnostics An apparatus for refrigeration system control includes a plurality of circuits, each circuit having at least one refrigeration case and an electronic evaporator pressure regulator in communication with each circuit. Each electronic evaporator pressure regulator cont... | 10/30/2007 |
| 7274567 | Capillary tube bubble containment in liquid cooling systems According to some embodiments, a capillary tube may be utilized to facilitate bubble containment in liquid cooling systems. For example, a system may comprise a first volume to contain a liquid, a second volume to contain the liquid and a gas, a capillary tube confi... | 09/25/2007 |
| 7251950 | Heating/cooling system There is provided a heating/cooling system capable of reducing power consumption. The heating/cooling system has a receiving room capable of using hot air and cold air in a switching manner, and comprises a refrigerant circuit which comprises a compressor, a gas coo... | 08/07/2007 |
| 7216498 | Method and apparatus for determining supercritical pressure in a heat exchanger A method and apparatus to determine the pressure of a supercritical refrigerant within a heat exchanger of a transcritical vapor compression system. A plurality of measurements, e.g., temperature, are obtained at spaced locations on the heat exchanger and the locati... | 05/15/2007 |
| 7207184 | Method for regulating a most loaded circuit in a multi-circuit refrigeration system A method for regulating a most loaded circuit of a refrigeration system is provided. Each circuit includes at least one case and an EEPR valve. At least one controller communicates with the EEPR valves for receiving signals from the circuits corresponding to operati... | 04/24/2007 |
| 7134486 | Control of electrolysis gases in electroosmotic pump systems Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as wel... | 11/14/2006 |
| 7131486 | Electroosmotic microchannel cooling system Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as wel... | 11/07/2006 |
| 7131283 | Method for controlling multi-type air conditioner Method for controlling a multi-type air conditioner having a plurality of indoor units each with an expansion valve, an indoor heat exchanger, and an indoor fan, some of which heat rooms, and rest of which are turned off, including the steps of (S11) defining... | 11/07/2006 |
| 7123037 | Integrated circuit temperature sensing device and method An integrated circuit (IC) temperature sensing device includes a temperature sensor positioned within a conductive temperature sensor housing and a thermal insulator surrounding the conductive temperature sensor housing. The sensor housing and thermal insulator are ... | 10/17/2006 |
| 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 |
| 7089088 | Integrated HVACR control and protection system An integrated HVACR control and protection system includes a modular and reprogrammable design providing a plurality of possible combinations of power detection, voltage detection, run current detection, transient current detection, temperature detection, universal ... | 08/08/2006 |
| 7076962 | Heating, ventilation and air conditioning (HVAC) system and method using feedback linearization A new feedback linearization approach to advanced control of single-unit and multi-unit HVAC systems is described. In accordance with the approach of the invention, this new nonlinear control includes a model-based feedback linearization part to compensate for the n... | 07/18/2006 |
| 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 |
| 7062934 | Apparatus and method for controlling the temperature of an electronic device An apparatus for controlling the temperature of an electronic device. The apparatus comprises a refrigeration system including a compressor and a multi-pass heat exchanger. The refrigeration system is operative to circulate a refrigerant fluid through a fluid flow l... | 06/20/2006 |
| 7051542 | Transcritical vapor compression optimization through maximization of heating capacity A vapor compression system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated through the system. The high side pressure of the vapor compression system is selected to optimize the heating capacity. In one example,... | 05/30/2006 |
| 7043927 | Transport Refrigeration system A transport refrigeration system, the transport refrigeration system including a container defining an enclosed volume and a refrigeration module coupled to the container. The refrigeration module is disposed to regulate the temperature of the enclosed volume and in... | 05/16/2006 |
| 7013666 | Multi-air conditioner and operation method thereof Disclosed is a multi-air conditioner in which heating and cooling operations are performed at the same time, the number of connection pipes connecting outdoor unit and distributor is simplified to three to flow a specific pressure and phase refrigerant through each ... | 03/21/2006 |
| 7000413 | Control of refrigeration system to optimize coefficient of performance A 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. As carbon dioxide has a low critical point, systems... | 02/21/2006 |
| 6993922 | Apparatus and method for controlling the temperature of an electronic device under test An apparatus for controlling the temperature of an electronic device under test includes a thermal head having a temperature controlled surface for making thermal contact with the electronic device. The thermal head defines a flow channel for passage of a refrigeran... | 02/07/2006 |
| 6951116 | Air conditioner and method for controlling electronic expansion valve of air conditioner Disclosed are an air conditioner in which one or more compressors are operated so that the refrigerant compression capacity of the operating compressor(s) is variably changed in accordance with a cooling or heating load for cooling or heating air in a room, and a me... | 10/04/2005 |
| 6942018 | Electroosmotic microchannel cooling system Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as wel... | 09/13/2005 |
| 6915648 | Vapor compression systems, expansion devices, flow-regulating members, and vehicles, and methods for using vapor compression systems Flow-regulating members are described that include a primary channel and a plurality of secondary channels. The primary channel defines a primary channel orifice in the flow-regulating member and the plurality of secondary channels define a plurality of secondary ch... | 07/12/2005 |
| 6912867 | Combined water cooler and refrigerator unit A combination water cooler and refrigerator unit is provided including a lower cabinet defining a refrigerated compartment, and an upper water reservoir for receiving a supply of water from a water source, such as an inverted water bottle. A refrigeration system mou... | 07/05/2005 |
| 6854285 | Controller and a method for controlling an expansion valve of a refrigeration system A controller for an expansion valve of a refrigeration system for cooling a medium is configured to include, in the generation of a control signal, a measure of the evaporation temperature (T0) of the refrigerant in an evaporator and a measure of a property o... | 02/15/2005 |
| 6789391 | Modular apparatus and method for shipping super frozen materials An apparatus and method is provided for freezing, storing, and/or shipping products, in particular fish, at super-frozen temperatures. The apparatus includes a modular cryogenic cooler for removably interfacing with an insulated shipping container to maintain the in... | 09/14/2004 |
| 6729150 | Method of controlling multi-compartment type kimchi refrigerator A method of controlling a multi-compartment type kimchi refrigerator having a plurality of evaporators which are mounted in respective storage compartments to refrigerate the storage compartments, a compressor which supplies the evaporators with refrigerant, and val... | 05/04/2004 |
| 6715305 | Two-evaporator refrigerator having a controlled variable throttler A refrigerator has a refrigerant circuit that is comprised of; a power-variable two-stage compressor, a variable throttler, which are computer controlled; and a first evaporator for fresh food compartments and a second evaporator for freezer compartments. Temperatur... | 04/06/2004 |
| 6672091 | Atomization device for a refrigerant An expansion device for refrigeration system having a piston which reciprocates to either open or close ports to increase or decrease the volume of atomized refrigerant liquid received from the condenser. Atomization may be enhanced by use of auxiliary ul... | 01/06/2004 |
| 6668570 | Apparatus and method for controlling the temperature of an electronic device under test An apparatus for controlling the temperature of an electronic device under test includes a thermal head having a temperature controlled surface for making thermal contact with the electronic device. The thermal head defines a flow channel for passage of a... | 12/30/2003 |
| 6609382 | Control method for a self-powered cryogen based refrigeration system A method of temperature control in a cryogenic system, wherein the system includes a cryogenic tank. The method comprises providing a motor speed sensor which determines a motor speed, providing a pressure sensor which determines a cryogenic pressure, pro... | 08/26/2003 |
| 6568199 | Method for optimizing coefficient of performance in a transcritical vapor compression system The high side pressure of a vapor compression system is selected to optimize the coefficient of performance by measuring the heat sink inlet temperature with a temperature sensor. For any heat sink inlet temperature, a single optimal high side pressure is... | 05/27/2003 |
| 6510700 | Electrical expansion valve An expansion valve for modifying the flow of a refrigerant fluid to provide reliable control of a refrigeration system includes a channel for conveying the refrigerant fluid. The channel has an inlet for accepting the refrigerant fluid and an outlet for e... | 01/28/2003 |
