Patent ID: 7555913
Filing Date: 2009-07-07
Classification: F25B

Abstract:
1. A method for controlling multiple compressors for use in an air conditioner, comprising: sequentially and equally operating a total number of compressors according to a matrix defined to prevent a specific compressor from among the total number of compressors from being repeatedly operated in sequence; deciding to increase or decrease capacity of the operating compressors by a predetermined value such that a certain number of compressors are added to or subtracted from the total number of compressors; changing a position in a matrix including one or more numbers indicative of a current operation state to another position according to the predetermined value; and changing operation states of the total number of compressors to other states according to a number located at the changed matrix position, wherein the matrix comprises a two-dimensional matrix, and wherein rows and columns of the matrix are arranged to control the total number of compressors to be alternately operated according to operating compressors from among the total number of compressors, and wherein elements of the two-dimensional matrix are obtained by converting a numerical value acquired by the following expression into a binary number, wherein n=the total number compressors in a system, i=row, j=column, k=a quantity of change to compressor capacity, and Xij/=compressor operation value at matrix position row i and column j.