Compressor installation structure for full-closed vortex dual-stage low-temperature unit

Abstract

The invention relates to a compressor installation structure for a full-closed vortex dual-stage low-temperature unit. The compressor installation structure comprises an electric cabinet, low-pressure compressors, a high-pressure compressor, a reservoir and an oil separator, wherein exhaust pipes of the low-pressure compressors are respectively communicated with a header arranged transversely, the header is coaxially connected with a middle mixing barrel, the middle mixing barrel mixes and cools the input high-pressure gaseous refrigerant and then delivers the refrigerant to an air suction port of the high-pressure compressor, an exhaust port of the high-pressure compressor is connected with the input port of the oil separator, the output port of the oil separator is connected with a condenser, the low-pressure compressors and the high-pressure compressor are installed at the upper part of the reservoir via longitudinal symmetrical u-bars, the lower end surfaces of the u-bars are installed together with the reservoir, and the upper end faces of the u-bars are installed together with the compressors. The compressor installation structure is simple, scientific and reasonable in design and skilful in conception, the compressors are convenient and fast in maintenance, and the energy efficiency is effectively improved by dual-stage vortex compression refrigeration cycle.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, in particular to a compressor installation structure of a fully enclosed scroll two-stage cryogenic unit. Background technique [0002] In the existing low-temperature freezing and refrigerating refrigeration systems, single-stage compressors are usually used, but single-stage compressors have a small cooling range, high compression ratio and often operate in extreme conditions when pulling low temperatures, which greatly reduces the life of the compressor and improves The maintenance rate is reduced, and the power consumption is large. [0003] The traditional cryogenic unit also has the following problems: 1. The screw refrigeration compressor has a large external dimension and occupies a relatively large space. 2. The middle mixing barrel of the unit is generally installed at the front of the compressor, which makes the maintenance of the compressor complicated. [0004] After searchin...

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Problems solved by technology

[0002] In the existing low-temperature freezing and refrigerating refrigeration systems, single-stage compressors are usually used, but single-stage compressors have a small cooling range, high compression ratio and often operate in extreme conditions when pulling low temperatures, which greatly reduces the life of the compressor and improves High maintenance rate, and high power consumption

[0003] The traditional low-temperature unit also has the following problems: 1. The screw refrigeration compressor has a large size and takes up a large space

2. The middle mixing tank of the unit is generally installed in the front of the compressor, which makes the maintenance of the compressor complicated

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