Refrigerating system and defrosting control method thereof

Abstract

The invention provides a refrigerating system and a defrosting control method thereof, and the refrigerating system comprises a compressor, an energy accumulator, a condenser, an evaporator and a throttling device; the compressor, the energy accumulator, the condenser and the evaporator are sequentially connected, an exhaust pipe of the compressor is connected with an inlet of the evaporator through one electromagnetic valve, and an outlet of the evaporator is connected with an air suction pipe of the compressor through the other electromagnetic valve. The energy accumulator comprises a first heat exchange coil and a second heat exchange coil, one end of the first heat exchange coil is connected with an exhaust pipe of the compressor, the other end of the first heat exchange coil is connected with an inlet of the condenser, one end of the second heat exchange coil is connected with an air suction pipe of the compressor, and the other end of the second heat exchange coil is connected with an outlet of the evaporator through the throttling device. According to the refrigerating system and the defrosting control method thereof, the evaporator is directly defrosted through exhaust of the compressor, the energy storage device is adopted for collecting exhaust waste heat of the compressor to improve the defrosting efficiency, and therefore the defrosting efficiency can be improved, and the system energy efficiency can be improved.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to a refrigeration system and a defrosting control method thereof. Background technique [0002] The evaporator is a commonly used refrigeration equipment. It will evaporate and frost during use, which will affect its refrigeration effect. At present, there are many ways to defrost the evaporator, but all of them have certain defects. For example, the natural ventilation defrosting method has the problems of low defrosting efficiency, long time, and large temperature changes in the cabinet; the electric defrosting method has the problems of power consumption and uneven defrosting; the four-way valve reversing hot gas defrosting method has high system costs , high failure rate, and difficult system design. The hot gas bypass defrosting method has the problems of low energy efficiency, easy liquid shock, and long-term operation will seriously affect the reliability...

AI Technical Summary

Problems solved by technology

[0002] The evaporator is a commonly used refrigeration equipment. It will evaporate and frost during use, which will affect its refrigeration effect.

At present, there are many ways to defrost the evaporator, but all of them have certain defects.

For example, the natural ventilation defrosting method has the problems of low defrosting efficiency, long time, and large temperature changes in the cabinet; the electric defrosting method has the problems of power consumption and uneven defrosting; the four-way valve reversing hot gas defrosting method has high system costs , high failure rate, difficult system design, low energy efficiency, easy liquid shock, and long-term operation will seriously affect the reliability of the compressor in the hot gas bypass defrosting mode

Images