Air-supply-adjustable compressor air compensating device and method and air conditioner

Abstract

The invention relates to an air-supply-adjustable compressor air supply device and method and an air conditioner. The compressor air supply device comprises an air supply pipeline, an adjusting part,a first adjusting pipeline and a second adjusting pipeline. The air supply pipeline is used for introducing a gaseous refrigerant to supply air to a compressor. The adjusting part is arranged on the air supply pipeline and comprises a ventilating runner and an adjusting sheet, the position of the adjusting sheet is adjustable to adjust the ventilating amount of the ventilating runner, and then theair supply amount of the compressor is adjusted. Fluid pressure in the first adjusting pipeline is used for providing first thrust for the adjusting sheet. Fluid pressure in the second adjusting pipeline is used for providing second thrust for the adjusting sheet. The thrust difference between the first thrust and the second thrust is adjustable for adjusting the position of the adjusting sheet.According to the air-supply-adjustable compressor air supply device and method and the air conditioner, when a unit is in different operation working conditions, the air supply amount of the compressor can be adjusted, adjustment is convenient, and the cost is low.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a compressor air supply device and method with adjustable air supply volume and an air conditioner. Background technique [0002] At present, the centrifugal chiller adopts two-stage compression. In order to increase the cooling effect of the unit and improve energy efficiency, a flasher (economizer) is installed on the unit. The high-pressure liquid refrigerant from the bottom of the condenser becomes The flash gas, that is, the gaseous refrigerant, enters the intermediate stage of the compressor after separating the mixed liquid droplets through the flasher, and directly replenishes and cools the compressor. [0003] For fixed-frequency units, once the unit is started, the motor quickly reaches the rated speed, the starting torque of the motor is particularly large, and the corresponding starting current is relatively large. At this time, the compressor is directly supplied with ai...

AI Technical Summary

Problems solved by technology

Due to the relatively high cost of the solenoid valve, the unit actually solves the problem of starting the fixed-frequency unit with load by adding a throttle orifice to the air supply pipe.

[0005] In addition, when the unit is operating in different working conditions, due to the fixed value of the orifice plate, the amount of air supply cannot be automatically adjusted with the change of the working condition of the unit. , which means that the opening of the air supply is fixed, the corresponding air supply volume is limited, and the performance improvement of the unit cannot be maximized.

However, when the unit is running under some small load conditions, it actually does not need so much air supply. The more air supply, the more work the compressor will do, which results in unnecessary power consumption.

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