Refrigeration equipment capable of automatically balancing filling quantity of refrigerant

Abstract

The invention discloses refrigeration equipment capable of automatically balancing the filling quantity of a refrigerant. The refrigeration equipment comprises a compressor, a condenser, a condensatefan, an expansion valve, a plate type heat exchanger, a gas-liquid separator, high-pressure and low-pressure sensors, a filling tank, two solenoid valves, a heating belt and a pressure sensor; and theoutput end of the compressor is connected with the input end of the condenser, the high-pressure sensor is connected to a connecting pipe, the output end of the condenser is provided with a first branch circuit and a second branch circuit, the first branch circuit is connected with the input end of the expansion valve, then sequentially connected with the plate type heat exchanger and the gas-liquid separator, and finally connected into the input end of the compressor, the low-pressure sensor is connected to a connecting pipe between the gas-liquid separator and the input end of the compressor, the second branch circuit of the output end of the condenser is connected with the input end of the filling tank, the first solenoid valve 61 is arranged on a connecting pipe, the output end of thefilling tank is connected with the input end of the gas-liquid separator, the second solenoid valve is arranged on a connecting pipe, and the electric heating belt is wound around the surface of a tank body of the filling tank, and the tank body is connected with the pressure sensor. The pressure of the filling tank can be controlled by controlling on-off of the electric heating belt.

Description

technical field [0001] The invention relates to the field of refrigerating equipment, in particular to a refrigerating equipment that automatically balances the charging amount of refrigerant. Background technique [0002] At present, the cooling of refrigeration equipment is mostly used in ordinary working conditions, and the refrigerant charge is only charged for cooling at normal temperature or high temperature working conditions. When encountering special working conditions, such as low-temperature cooling of the chiller unit, the water temperature on the evaporating side is high, resulting in high low pressure, and the ambient temperature on the condensing side is very low, resulting in low high pressure. At this time, the pressure difference between high and low is small, which is not conducive to Stable operation of the compressor refrigeration system. At this time, it is necessary to use some measures to increase the high pressure of the refrigeration to increase th...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a refrigeration equipment that automatically balances the amount of refrigerant charge, so as to solve the problem of small pressure difference in the prior art refrigeration equipment

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