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A centrifugal chiller and a quick start-up method after power failure

A quick-start, chiller technology, applied in the direction of refrigerators, refrigeration components, compressors, etc., can solve problems such as unreachable, mechanical parts and control system operation effects, etc., to reduce changes, ensure cooling capacity supply, and start-up process safety reliable effect

Active Publication Date: 2020-01-17
MCQUAY AIR CONDITIONING & REFRIGERATION WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the abnormal disconnection of the power supply, it will affect the operation of some mechanical parts of the unit and the operation of the control system. If the conventional unit design is followed, the above-mentioned customer requirements cannot be met.

Method used

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  • A centrifugal chiller and a quick start-up method after power failure
  • A centrifugal chiller and a quick start-up method after power failure
  • A centrifugal chiller and a quick start-up method after power failure

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Embodiment Construction

[0031] In order to further illustrate the technical scheme of the present invention, below in conjunction with Figure 1-4 The present invention is described in detail to facilitate a clearer understanding of the present invention, but they are not intended to limit the present invention.

[0032] Such as figure 1 As shown, it is a schematic structural diagram of a centrifugal chiller capable of quick start-up after power failure, including an evaporator 11, a condenser 14, a centrifugal compressor 10, a compressor quick unloading device, a quick-start cabinet 16, and a UPS cabinet. 17 (built-in UPS uninterruptible power supply), unit control cabinet 18 (built-in controller and time relay) and some other necessary auxiliary facilities. The compressor 10 and the evaporator 11 of the unit are connected through a suction pipe 12 , and an adjustable guide vane 13 is arranged at the inlet of the compressor, and the adjustable guide vane 13 is opened and closed by the four-way valv...

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Abstract

The invention discloses a centrifugal chiller and a method for quick start-up after power failure, which is characterized in that the quick unloading device of the compressor includes a four-way valve and a quick unloading valve, specifically: a quick unloading valve is arranged outside the four-way valve to communicate with the four-way valve The high-pressure oil outlet of the valve and the high-pressure oil chamber of the piston cavity, the flow channel where the quick unloading valve is located and the internal flow channel of the four-way valve simultaneously form a high-pressure oil inlet channel; another quick unloading valve is set outside the four-way valve to communicate with the piston cavity The low-pressure oil chamber and the oil tank, the low-pressure chamber in the piston chamber are connected to the oil tank through the other quick unloading valve and the internal return channel of the four-way valve; an adjustable guide vane is arranged at the inlet of the compressor, and the adjustable guide vane is controlled by the four-way valve. The valve controls opening and closing. Quick startup can be achieved in the event of an abnormal disconnection of the main power supply and a short recovery.

Description

technical field [0001] The invention relates to an air conditioner unit and a starting method, in particular to a centrifugal chiller and a quick starting method after a power failure. Background technique [0002] With the development of the national economy, the chillers currently used in some technological processes and data centers are generally required to have the function of quickly starting to provide cooling after the power supply is abnormally disconnected and restored within a short period of time. Due to the abnormal disconnection of the power supply, it will affect the operation of some mechanical parts of the unit and the control system. If the unit is designed according to the conventional design, it cannot meet the requirements put forward by the above-mentioned customers. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a centrifugal chiller and its starting method that can realize rapid startup w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B49/02F25B41/04F25B41/20
CPCF25B13/00F25B49/022F25B2313/0292F25B2313/02741F25B2600/0251F25B2500/05F25B2400/19F25B2400/077F25B41/20
Inventor 吴晶晶张小琴邓乔林陈磊
Owner MCQUAY AIR CONDITIONING & REFRIGERATION WUHAN
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