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冰凍機為什么要長期維護保養

2022-10-21


為什么要維護冷水機

離心制冷機主要由離心制冷壓縮機、主電機、蒸發器(殼管式)、冷凝器(殼管式)、節流裝置、壓縮機入口能量控制機構、抽氣回收裝置、潤滑油系統、安全保護裝置、主電機噴霧蒸發冷卻系統、采油裝置和微機控制系統組成。

1. 離心冷水機的特點

離心式冷水機組是一種制冷量大的冷水機組,具有以下主要優點:

1. 該壓縮機輸送氣量大,單機制冷量大,結構緊湊,質地輕,使用面積小,安裝使用方便;

2. 高性能系數高,易控制,高智能控制,易控制;

3.葉輪旋轉,保證機組運行平穩,制冷穩定;

4. 操作方便,可在大制冷量范圍內經濟地實現無級控制;

5. 無氣閥、填料、活塞環等易損件,運行安全可靠。

6. 離心式冷水機的主要缺點是:

(1)由于速度高,材料強度、加工精度和制造質量標準嚴格;

(2)單級壓縮機在低負荷時容易出現喘振;

(3)當工況偏離設計工況時,工作效率迅速下降;

(4)制冷量隨蒸發溫度的降低而下降快于活塞式制冷量,隨轉速的降低而急劇下降。


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