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Double-compressor parallel-screw flooded-type water chilling unit system

A dual compressor and chiller technology, applied in the field of oil balance system, can solve problems such as compressor oil shortage and oil level imbalance, and achieve the effect of avoiding oil shortage

Inactive Publication Date: 2010-06-30
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Parallel screw flooded chillers with dual compressors often experience oil shortages in the two compressors in the parallel system due to unbalanced oil levels

Method used

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  • Double-compressor parallel-screw flooded-type water chilling unit system

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Embodiment Construction

[0013] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0014] figure 1 Shows a dual compressor parallel screw flooded chiller system according to the present invention, including: a first compressor 1 and a second compressor 2 communicating with the same oil separator 3; an oil separator 3, the oil separator The first inlet port 3a of the oil separator is connected with the outlet port 1a of the first compressor 1 through the first exhaust pipeline 10, and the second inlet end 3b of the oil separator is connected with the second compressor through the second exhaust pipeline 20. The gas outlet 2a of the machine 2 is connected, and the first oil outlet 3c of the oil separator 3 is connected with the oil inlet 1b of the first compressor through the first oil return pipeline 12, and the second oil outlet of the oil separator 3 3d is connected to the oil inlet port 2b of the second compressor through the second ...

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Abstract

The invention provides a double-compressor parallel-screw flooded-type water chilling unit system, which comprises two compressors, an oil separator, an evaporator and a condenser, wherein the two compressors include a first and a second compressor; two air inlet ends of the oil separator are respectively and correspondingly connected to the air outlet ends of the two compressors and two oil outlet ends of the two compressors are respectively and correspondingly connected to the oil inlet ends of the two compressors; the evaporator is communicated with the respective suction end of the two compressors; and one end of the condenser is communicated with the air outlet ends of the oil separator and the other end is communicated with the evaporator. Especially, an oil sink high-level interface of the first compressor is communicated with the suction end of the second compressor, and the oil sink high-level interface of the second compressor is communicated with the suction end of the first compressor.

Description

technical field [0001] The invention relates to the field of flooded water chillers, in particular to an oil balance system of a double-compressor parallel screw flooded water chiller. Background technique [0002] At present, the development of screw flooded chillers has gradually become a hot spot in the technical field of large domestic chillers, especially after the country announced a new energy-saving evaluation standard for chillers, screw flooded chillers can significantly improve the energy efficiency of the unit It has increasingly become the focus of R&D competition among large air-conditioning manufacturers. Currently there are parallel screw flooded chiller systems using dual compressors in the market, in this dual compressor unit system, the oil balance between the two compressors is an important issue in research. Parallel screw flooded chillers with dual compressors often experience oil shortages in the two compressors in the parallel system due to unbalance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/047
Inventor 王峰程孝武齐方成刘明珠姜灿华
Owner GREE ELECTRIC APPLIANCES INC
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