REGISTER now for FREE 
|
FREE patent keyword monitoring and additional FREE benefits. REGISTER now for FREE
|
|
|
Refrigeration > Automatic Control > Refrigeration Producer > Compressor Or Its Drive Controlled > By Variable Compressor Output, E.g., Unloading, Staging, Etc. By Variable Compressor Output, E.g., Unloading, Staging, Etc.By Variable Compressor Output, E.g., Unloading, Staging, Etc. patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070266719 - Air conditioner and method of controlling the same An air conditioner includes first and second compressors, an outdoor heat exchanger through which refrigerant discharged from the first and second compressors passes, an outdoor fan for forcedly directing air toward the outdoor heat exchanger, an expansion valve for expanding the refrigerant discharged from the outdoor heat exchanger, an indoor ... 06/21/07 - 20070137232 - Air conditioner An air conditioner having in a refrigeration cycle a fixed displacement-type first compression mechanism and a variable displacement-type second compression mechanism independent from each other, and also having second compression mechanism displacement control means, compression mechanism operation switching control means, an evaporator for refrigerant, a condenser, a blower, evaporator temperature ... 06/14/07 - 20070130976 - Parallel condensing unit control system and method A refrigeration system comprises a plurality of compressors and a plurality of condensing units comprising a first condensing unit having a first control module and at least one additional condensing unit having an additional control module. Each condensing unit has at least one compressor of the plurality of compressors. A ... 06/14/07 - 20070130975 - Air conditioning system for vehicles An air conditioning system for vehicles includes a compressor and a variable displacement compressor provided in a refrigeration cycle, means for operating the variable displacement compressor, compressor operation switching means for switching the compressor operation between the compressor and the variable displacement compressor, and variable displacement compressor feedforward displacement value ... 03/01/07 - 20070044490 - Method for selectively operating compressors of dual type unitary air conditioner A method for selectively operating compressors of a dual type unitary air conditioner includes respectively sensing compressor operation requiring signals outputted from a plurality of centralized warm and cold air circulators and a compressor operation requiring signal outputted from at least one individual warm and cold air circulator; changing the ... 02/15/07 - 20070033958 - Driving controlling apparatus for air conditioner having plural compressors and method thereof A driving controlling apparatus for an air conditioner having a plurality of compressors, and a method thereof. The apparatus comprises a flow amount distribution resistor installed at an outlet of an expansion valve, for passing a certain amount of refrigerant; and a controlling unit for detecting a current load and ... 11/30/06 - 20060266063 - Heat pump system with multi-stage compression A multi-compressor heat pump system configured to provide heating and cooling over a range of ambient temperatures. The compressors can be operated independently and alone or together in series for maximum output. Heat exchangers are selectively fluidically connected to the compressors to enable refrigerant flow between the compressors and at ... 10/05/06 - 20060218953 - Control valve for variable displacement compressor To enable a control valve for a variable displacement compressor, which operates by sensing a differential pressure between discharge pressure and suction pressure or between the discharge pressure and crankcase pressure, to enhance compression efficiency inside the compressor. In the control valve for a variable displacement compressor, according to the ... 06/29/06 - 20060137372 - Apparatus and method of summing capacities of outdoor units in multiple air conditioner An apparatus for summing capacities of outdoor units in a multiple air conditioner comprises self-capacity storage devices mounted in outdoor units, respectively, for storing self-capacities of the outdoor units and outputting the self-capacities of the outdoor units when necessary, an outdoor unit capacity summing part mounted in one outdoor unit ... 06/08/06 - 20060117777 - Method for controlling multi-unit air conditioning system A method for controlling a multi-unit air conditioning system adapted to cool or heat room spaces while passing a refrigerant in one direction or in a reverse direction is disclosed. In the method, which is applied to a multi-unit air conditioning system including at least three compressors, when a compressor ... 06/08/06 - 20060117776 - Multi-type air conditioner and method for controlling the same Multi-type air conditioner including a plurality of compressors, a plurality of temperature sensors mounted in the plurality of compressors for sensing temperatures in the compressors respectively, and an equalizing pipe in communication with the plurality of compressors, for uniform distribution of oil among the plurality of compressors according to the ... 06/01/06 - 20060112705 - Apparatus for controlling the capacity of an air conditioner and control method using the same Disclosed herein is an apparatus for controlling the capacity of an air conditioner and a control method using the same. The capacity control apparatus is configured in such a fashion that a 3-way or 4-way direction-switching member and a low-pressure equalizing solenoid valve are provided at a refrigerant path of ... 04/20/06 - 20060080984 - Refrigerant cycle with tandem compressors and multiple condensers A tandem compressor system is utilized that receives refrigerant from a common suction manifold, and from a common evaporator. From the compressors, the refrigerant passes to a plurality of condensers, with each of the condensers being associated with a separate zone for heat rejection, preferably at different temperature levels. Each ... 03/23/06 - 20060059931 - Binary control compressor system The invention is a control system for controlling compressors that are used to cool a building or a manufacturing process. The control system utilizes compressors of different sizes, including a series of compressors in which each compressor is double the size of the previous one. A control system chooses a ... 03/23/06 - 20060059930 - Air conditioner control logic for compressor noise and torque management An air conditioner has a controller that controls the operation of a refrigerant circuit that has a compressor, a condenser, an expansion valve or orifice tube, and an evaporator. The condenser receives a compressed refrigerant from the compressor and condenses the refrigerant to either a liquid phase or a saturated ... 12/29/05 - 20050284165 - Method to control high condenser pressure A method for controlling load capacity in an air conditioning unit comprising the steps of initializing a saturated condensing temperature upper bound (SCT_UP), comparing a saturated condensing temperature (SCT) to a maximum condensing temperature threshold (MCT_TH), unloading a single load capacity step, allowing the air conditioning unit to stabilize, and ... 12/01/05 - 20050262860 - Apparatus and method for controlling multiple compressors contained in airconditioner A method for controlling multiple compressors for use in an airconditioner is disclosed. In the airconditioner having N compressors, the method sequentially and equally operates the N compressors using a two-dimensional matrix which prevents only a specific compressor from among the N compressors from being repeatedly operated, arranges rows and ... 09/29/05 - 20050210901 - Distributed cooling system A system includes a plurality of distributed refrigeration units respectively coupled to discrete refrigeration circuits. Each refrigeration unit may include a variable compressor, a fixed compressor, a condensing unit, and a controller. The controller compares an operating condition of the refrigeration unit to a refrigeration circuit set point to select ... 06/09/05 - 20050120730 - Heat pump water heating system including a compressor having a variable clearance volume A heat pump water heater system includes a compressor that has a variable clearance volume that can be selectively controlled to control the mass flow rate of refrigerant from the compressor. Under higher ambient air temperature conditions, the variable volume is increased to keep refrigerant in a variable clearance volume ... ### FreshPatents.com Support |