MULTI-CHAMBER TYPE COOLING AND HEATING DEVICE

• Main Authors: MASUDA MASAAKI, WAKAHARA KATSUHIRO, SAKATA SHUICHI, KOTANI MASANORI
• Format: Patent
• Language: English
• Published: 25.01.1991
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

PURPOSE:To calculate a frequency of a compressor in which more than three indoor devices are connected to one outdoor device by a method wherein a compressor frequency control part is provided for calculating a frequency of a frequency variable type compressor with a frequency calculation algorithm for the compressor and controlling the frequency in response to an amount of load of each of indoor heat exchangers. CONSTITUTION:A plurality of rated capacities Qa, Qb and Qc of indoor devices A, B and C are divided into two in correspondence with load coefficients (a), (b) and (c), respectively. A total value (a+b) of one load coefficient is placed into correspondence to a load coefficient of one indoor device of a compressor frequency calculation algorithm in a double chamber type cooling and heating device and at the same time a total value (b) of the other negative coefficient is placed in correspondence to a load coefficient relating to the other indoor device. A total value (Qa+Qc) of one rated amount corresponding to one load coefficients (a, c) is corresponded to a rated capacity relating to one indoor device and at the same time a total value (Qb) of the other rated capacity is placed in correspondence to a rated amount relating to the other indoor device. A frequency calculation algorithm for a compressor in a double chamber type cooling and heating device is applied to calculate a frequency of the compressor in the multi-chamber type cooling and heating device having more than three indoor devices connected thereto.