JPS6337970U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る冷凍機の冷凍サイクルを
示す図、第２図は出力ステツプと周波数との関係
を示す図、第３図は周波数と振動との関係を示す
図、第４図は従来の負荷と周波数との関係を示す
図、第５図は従来の出力ステツプと周波数との関
係を示す図、第６図は従来の周波数と振動との関
係を示す図である。 図中、１ａ，１ｂは圧縮機、８ａ，８ｂは周波
数可変装置、１１は制御手段である。 Figure 1 is a diagram showing the refrigeration cycle of the refrigerator according to the present invention, Figure 2 is a diagram showing the relationship between output steps and frequency, Figure 3 is a diagram showing the relationship between frequency and vibration, and Figure 4 is a diagram showing the relationship between frequency and vibration. FIG. 5 is a diagram showing the conventional relationship between load and frequency, FIG. 5 is a diagram showing the conventional relationship between output step and frequency, and FIG. 6 is a diagram showing the conventional relationship between frequency and vibration. In the figure, 1a and 1b are compressors, 8a and 8b are frequency variable devices, and 11 is a control means.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 冷凍サイクル内に並列に接続された複数の圧縮
機を有すると共にこれら圧縮機の出力周波数を可
変制御する周波数可変装置を有した能力可変式冷
凍機において、前記冷凍サイクル内の負荷を検出
しその負荷に応じた圧縮能力にすべく前記周波数
可変装置に周波数指令信号を出力すると共に各圧
縮機へ異なつた周波数指令信号を出力する制御手
段を備えたことを特徴とする能力可変式冷凍機。 In a variable capacity refrigerator that has a plurality of compressors connected in parallel in a refrigeration cycle and a variable frequency device that variably controls the output frequency of these compressors, the load in the refrigeration cycle is detected and the load is adjusted. 1. A variable capacity refrigerator comprising: a control means for outputting a frequency command signal to the frequency variable device and outputting a different frequency command signal to each compressor in order to adjust the compression capacity according to the compressor.