An air-conditioning system and its energy regulation method

Abstract

The invention discloses an air conditioning system and an energy regulating method thereof. The air conditioning system includes a compressor, a condenser, a liquid storage tank, and an expansion tank. A reversing valve is provided in the middle of the pipeline of the condenser, and the refrigerant communicates with the bottom of the expansion tank through the reversing valve and the pipeline. The top of the expansion tank communicates with the suction pipeline of the compressor through the pipeline and the first electromagnetic valve, and also includes a liquid supply pipeline connecting the bottom of the expansion tank and the bottom of the liquid storage tank, and the liquid supply pipeline is provided with a first Two solenoid valves. The invention is applied in the refrigeration system of the compressor unit without capacity adjustment, not only avoids the pressure loss caused by changing the flow rate, but also helps to improve the oil return condition.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning system and an energy regulating method thereof. Background technique [0002] The capacity adjustment method of the screw compressor is generally adjusted by a plunger, a slide valve, and a variable frequency motor. For small-displacement screw compressors, due to the complex arrangement of the plunger and slide valve, they are often limited by the small body space, which makes the design and production process very difficult. The use of variable frequency motors will lead to a substantial increase in costs, which often solves the cost of the compressor, and at the same time brings additional expenditure on frequency conversion control. Therefore, small-displacement screw compressors are often designed without capacity adjustment, which cannot accurately match the actual load changes, and can only be roughly controlled on and off within the set large...

AI Technical Summary

Problems solved by technology

The most commonly used method is to reduce the refrigerant flow, such as directly bypassing the exhaust, reducing the exhaust flow to reduce the cooling capacity. This solution is likely to cause system pressure loss due to changing the flow; or by closing the economizer to reduce refrigerant supercooling to reduce the unit cooling capacity of the refrigerant, which is not conducive to improving the oil return status of the compressor

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