Unit, and method and device for controlling unit to operate stably

Abstract

The invention discloses a unit, and a method and device for controlling the unit to operate stably. The unit comprises a main controller and a proportional valve, wherein the main controller is used for sending an adjusting instruction to the proportional valve when the water temperature of a water inlet pipeline of a condenser is lower than the preset water temperature; and the proportional valveis located at a water inlet of the water inlet pipeline of the condenser, connected with the main controller and used for adjusting the proportion correspondingly after receiving the adjusting instrument so as to reduce the water inlet flow of the water inlet pipeline of the condenser. Through the unit and the method and device for controlling the unit to operate stably, the proportional valve can be utilized to reduce the water inlet flow of the water inlet pipeline of the condenser, so that the water temperature is increased, namely the condensation temperature is increased, it is ensured that the condensation pressure is within the suitable range, and thus long-term stable operation of the unit can be guaranteed.

Description

technical field [0001] The invention relates to the field of units, in particular to a unit and a method and device for controlling its stable operation. Background technique [0002] At present, marine air conditioners generally use seawater or river water for cooling, thereby cooling the cabin. The working parameters of marine air conditioning units are mostly designed according to the operating conditions in summer. However, in winter, some equipment cabins with high heat generation and the inner cabins of large ships still need to turn on the air conditioner for cooling. However, when the water temperature is too low, the condensing pressure of the unit will be low, causing the cooling operation of the air conditioning unit to exceed the operating range of the compressor, affecting the long-term stable operation of the unit, and even damaging the compressor. [0003] Aiming at the problem in the prior art that the unit cannot operate stably due to low condensing pressu...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a unit and a method and device for controlling its stable operation to solve the problem in the prior art that the unit cannot operate stably due to low condensation pressure under special working conditions (low temperature refrigeration)

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