Marine air conditioner liquid supplying control system

Abstract

The invention relates to a marine air conditioner liquid supplying control system. The marine air conditioner liquid supplying control system comprises a compressor alternating current contactor and a liquid supplying solenoid valve which are connected to a control power source in parallel. A power-off delay time relay switch is connected to a parallel branch of the compressor alternating current contactor in series. An air conditioner temperature controller is connected to a parallel branch of the liquid supplying solenoid valve in series. A power-on delay time relay and a power-off delay time relay are connected to the liquid supplying solenoid valve in parallel. A compressor alternating current contactor switch is connected to the parallel branch of the liquid supplying solenoid valve in series. A power-on delay time relay switch is connected to a parallel branch of the power-off delay time relay in series. The marine air conditioner liquid supplying control system is simple in structure and reasonable in control, the liquid impact and low-pressure parking problems caused by frequent starting of a compressor can be effectively solved, the using performance of the compressor can be ensured, and the service life of the compressor can be prolonged.

Description

technical field [0001] The invention relates to a marine air-conditioning control system, in particular to a marine air-conditioning liquid supply control system. Background technique [0002] In the traditional marine air-conditioning control system, the temperature controller usually directly controls the start and stop of the compressor and the liquid supply solenoid valve. The disadvantage is that when the compressor is restarted, the refrigerant in the pipeline is likely to form a liquid shock on the compressor and damage the valve. , causing unnecessary losses. In the existing control system, the temperature controller controls the start and stop of the liquid supply solenoid valve to vacuumize the refrigerant pipeline, which is easy to cause low-pressure shutdown. When the liquid supply solenoid valve is restarted, the low pressure reset is quite slow, and the compressor restarts. Difficult, there is a hidden danger that the compressor cannot be started. Contents ...

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art that the refrigerant pipeline is easy to cause low-pressure shutdown after vacuum treatment, and the compression restart is difficult or even impossible to start, the present invention provides a simple structure, reasonable control, which can effectively solve the problem of frequent start-up of the compressor. The liquid supply control system for marine air conditioners to ensure the stable performance of the compressor and prolong the service life of the compressor

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