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| Number | Title | Issue Date |
| 7793511 | Multi type air-conditioner and control method thereof A multi type air-conditioner is provided. The multi type air conditioner includes an outdoor unit having a plurality of outdoor heat exchangers that heat-exchanges with outdoor air and a compressor that compresses a refrigerant; a plurality of indoor units that perf... | 09/14/2010 |
| 7546746 | Cooling apparatus There is provided a cooling apparatus which can improve a cooling efficiency while preventing an abnormal increase in pressure of a high side. The cooling apparatus comprises: a refrigerant circuit which uses carbon dioxide as a refrigerant; a control device which c... | 06/16/2009 |
| 7412840 | Aircraft ground support cart with component life optimization control A ground-based system and method of supplying electrical power and temperature-controlled air to an aircraft environmental control system during ground support operations uses a throttle valve to control the flow of compressed air flowing through a heat exchanger. A... | 08/19/2008 |
| 7386985 | Detection of refrigerant charge adequacy based on multiple temperature measurements The refrigerant charge adequacy of an air conditioning system is determined by the sensing of two temperatures in the system, one being at a midpoint in a condenser coil and the other being the temperature in the liquid line of the condenser discharge, with the diff... | 06/17/2008 |
| 7380404 | Method and control for determining low refrigerant charge A refrigerant system is provided with a method and a control programmed to perform the method, in which a low charge of refrigerant is identified. The mass flow of refrigerant through the system is calculated utilizing at least two different methods. The two calcula... | 06/03/2008 |
| 7370484 | Variable evaporator control for a gas dryer A variable evaporator control system and method in a gas dryer for maximizing the cooling which can be accomplished for a given length heat exchanger by adjusting the evaporator refrigerant approach temperature responsive to changes in the gas load on the system. Pr... | 05/13/2008 |
| 7367198 | Method of control for a refrigerated merchandiser The present invention provides a refrigerated merchandiser including a case defining a product display area. The product display area defines a highest temperature zone and a lowest temperature zone. The merchandiser includes a first product simulator positioned in ... | 05/06/2008 |
| 7360372 | Refrigeration system A refrigeration system to increase the subcooling degree of refrigerant flowing through a main refrigerant circuit is provided. The refrigeration system is configured such that a portion of the refrigerant flowing through the main refrigerant circuit can be made to ... | 04/22/2008 |
| 7343751 | Intelligent thermostat system for load monitoring a refrigerant-cycle apparatus A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 03/18/2008 |
| 7337619 | Method and system for assessing a refrigerant charge level in a vehicle air conditioning system A method and system for assessing a level of refrigerant in a vehicle air conditioning system. A refrigerant charge value is determined as a function of ambient air temperature, ambient air humidity, conditioned air temperature, and compressor cycling signals. The r... | 03/04/2008 |
| 7331187 | Intelligent thermostat system for monitoring a refrigerant-cycle apparatus A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 02/19/2008 |
| 7308799 | Air conditioning system operating on vehicle waste energy A waste energy-based vehicle air conditioning system includes efficient compression driving means coupled to refrigeration means, which greatly reduces the extra fuel otherwise required to operate conventional vehicle air conditioning systems. In one implementation,... | 12/18/2007 |
| 7302805 | Sensor array used for monitoring at least two physical parameters A sensor array, particularly for vehicle air conditioners, having a housing, in which an electronic unit, a first sensor element connected with the electronic unit for measuring a first physical parameter, and a second sensor element connected with the electronic un... | 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 |
| 7293422 | Refrigerator with internal compartment divisible into independent temperature zones A refrigerator having a removable shelf with a user interface for setting the working conditions of a refrigerator compartment. The user interface also being able to transmit the working conditions to a control unit of the refrigerator. The refrigerator having a pac... | 11/13/2007 |
| 7275377 | Method and apparatus for monitoring refrigerant-cycle systems A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 10/02/2007 |
| 7266961 | Mobile refrigeration system and control A mobile refrigeration system that includes an engine that is operable at a first speed greater than zero and a second speed greater than zero. A compressor is operable in response to the engine at a first speed and a second speed. The system also includes an evapor... | 09/11/2007 |
| 7260946 | Mobile refrigeration system and control A mobile refrigeration system that includes an engine that is operable at a first speed greater than zero and a second speed greater than zero. A compressor is operable in response to the engine at a first speed and a second speed. The system also includes an evapor... | 08/28/2007 |
| 7234313 | HVAC monitor and superheat calculator system The present invention relates to a monitoring system for connection to an air conditioning system. The monitoring system includes a primary monitor for sensing the suction temperature and suction pressure of the air conditioning system along with the air conditionin... | 06/26/2007 |
| 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 |
| 7201006 | Method and apparatus for monitoring air-exchange evaporation in a refrigerant-cycle system A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 04/10/2007 |
| 7197883 | Cooling or heating with multi-pass fluid flow Apparatus and methods for cooling or heating product by passing it through a tunnel in which gaseous heat transfer medium such as cryogen vapor or steam is impinged toward the product and then drawn away from the product in a manner that minimizes intersection with ... | 04/03/2007 |
| 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 |
| 7146819 | Method of monitoring refrigerant level The invention relates to a method of refrigerant level monitoring in a refrigerant circuit of an air-conditioning or heat-pump system having a compressor and a refrigerant which may, depending on the operating point, be operated in the supercritical range. The metho... | 12/12/2006 |
| 7143590 | Vehicle air conditioner In a vehicle air conditioner, at least one of an inner surface temperature of a passenger compartment and a surface temperature of a passenger in each detection area is the passenger compartment is detected by an infrared rays sensor, and a control unit determines a... | 12/05/2006 |
| 7134291 | Process for refrigerant charge level detection using a neural net having one output neuron The invention is a process for determining the charge level of a vapor cycle environmental control system, having a condenser, evaporator, and an expansion valve, comprising the steps of providing a neural network having four input neurons, two hidden neurons and on... | 11/14/2006 |
| 7114343 | Method and apparatus for monitoring a condenser unit in a refrigerant-cycle system A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or... | 10/03/2006 |
| 7111469 | Process for refrigerant charge level detection using a neural net The invention is a process for determining the charge level of a vapor cycle environmental control system, having a condenser, evaporator, and an expansion valve, comprising the steps of providing a neural network having four input neurons, two hidden neurons and th... | 09/26/2006 |
| 7111470 | Variable evaporator control for a gas dryer A variable evaporator control system and method in a gas dryer for maximizing the cooling which can be accomplished for a given length heat exchanger by adjusting the evaporator refrigerant approach temperature responsive to changes in the gas load on the system. Pr... | 09/26/2006 |
| 7080521 | Mobile refrigeration system and control A mobile refrigeration system that includes an engine that is operable at a first speed greater than zero and a second speed greater than zero. A compressor is operable in response to the engine at a first speed and a second speed. The system also includes an evapor... | 07/25/2006 |
| 7038412 | Device with an electromotor An arrangement having an electric motor (10) has a microcontroller (12) for influencing at least one motor function and a nonvolatile storage element (14) for storing at least one variable as a definition for that motor function. The arrangement... | 05/02/2006 |
| 7010929 | Centrifugal heat transfer engine and heat transfer systems embodying the same A heat transfer engine having cooling and heating modes of reversible operation, in which heat can be effectively transferred within diverse user environments for cooling, heating and dehumidification applications. The heat transfer engine of the present invention i... | 03/14/2006 |
| 6993418 | Method and apparatus for latent temperature control for a device under test A method and associated algorithm for controlling and optimizing the temperature of a device under test (DUT) through calculation of a moving setpoint which varies from the user-specified DUT core temperature. The method generally comprises (i) calculating a system ... | 01/31/2006 |
| 6966498 | Solar radiation compensation method for a vehicle climate control A vehicle climate control is compensated for direct and indirect infrared heat loading due to solar radiation based on a mean radiant temperature sensor and a cabin air temperature sensor. The mean radiant temperature sensor include a temperature responsive element ... | 11/22/2005 |
| 6957545 | Vehicle air conditioner with ventilating function while parking An air conditioning apparatus preferentially ventilates a space close to a seat and/or a steering wheel on which a passenger directly makes a contact in a passenger compartment while a vehicle is parked. The uncomfortable feeling of a passenger that might occur when... | 10/25/2005 |
| 6944562 | Temperature compensation device and method with low heat-generation A temperature compensation device for an optical communication device or the like is constructed so that an error value, which is the difference between the current temperature and a reference temperature, is subjected to digital processing in a temperature comparis... | 09/13/2005 |
| 6907743 | Method for controlling and optimizing the cycle for production of ice cream depending on the mixtures used Method for controlling and optimising the cycle for production of ice cream depending on the mixtures used in the ice-cream making machine, comprising a freezing cylinder exchanging heat with the evaporator of a refrigerating circuit, and a stirrer/scraper element r... | 06/21/2005 |
| 6871509 | Enhanced cooling system An air conditioning system is disclosed which takes advantage of low ambient temperature conditions so as to activate a refrigerant flow that bypasses the compressor. The activation of the refrigerant flow is achieved by the intelligent control of a pump positioned ... | 03/29/2005 |
| 6817199 | Cooling system A system and method for cooling a room configured to house a plurality of computer systems. A heat exchanger unit is configured to receive air from the room and to deliver air to the room. The heat exchanger unit is supplied with cooling fluid operable to cool the r... | 11/16/2004 |
| 6796137 | Air conditioning system comprising an electronic control device The invention proposes an air conditioning system for motor vehicles which is fitted with an injection computer and an electronic control device. The system comprises a first measuring member suitable for supplying a value relating to the pressure of the fluid at a ... | 09/28/2004 |
