Centrifugal water chilling unit and power failure rapid starting method

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: 2017-08-29
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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  • Centrifugal water chilling unit and power failure rapid starting method
  • Centrifugal water chilling unit and power failure rapid starting method
  • Centrifugal water chilling unit and power failure rapid starting method

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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 water chilling unit and a power failure rapid starting method. The centrifugal water chilling unit is characterized in that a compressor rapid unloading device comprises a four-way valve and rapid unloading valves; specifically, one rapid unloading valve is arranged outside the four-way valve to communicate with a high-pressure oil outlet of the four-way valve and a high-pressure oil cavity of a piston cavity, and a runner where the rapid unloading valve is located and an inflow runner in the four-way valve simultaneously constitute a high-pressure oil inlet channel; the other rapid unloading valve is arranged outside the four-way valve to communicate with a low-pressure oil cavity of the piston cavity and an oil tank, and the low-pressure cavity in the piston cavity simultaneously communicates with the oil tank through the other rapid unloading valve and a backflow runner in the four-way valve; and an adjustable guide vane is arranged at an inlet of a compressor and controlled to be opened and closed through the four-way valve. Rapid starting can be achieved under the condition that a main power source is abnormally disconnected and is recovered for a short time.

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 Applications(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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