Chiller

Abstract

The invention discloses a water chiller, comprising: a compressor, a condenser, a high-pressure float valve, a low-pressure liquid collector, an evaporator and a throttling element. The compressor has an exhaust port and an air return port. The inlet of the condenser is connected with the discharge port of the compressor. The high pressure float valve is connected with the outlet of the condenser to adjust the liquid level of the condenser. The low-pressure liquid collector is provided with a liquid inlet and an output port, and the output port is connected with the air return port of the compressor. The outlet of the evaporator is connected to the liquid inlet of the low-pressure liquid collector, and the inlet of the evaporator is connected to the high-pressure float valve through a pipeline, and a part of the pipeline is located in the low-pressure liquid collector. The throttling element is arranged on the pipeline and adjacent to the inlet of the evaporator. According to the water chiller of the present invention, the outlet of the condenser has a certain degree of subcooling, which improves the effect of the supercooling of the high-pressure refrigerant liquid, avoids the suction of the compressor with liquid, increases the cooling capacity and energy efficiency ratio of the chiller, and improves the compression machine life.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a chiller. Background technique [0002] Existing water chillers have the following disadvantages: 1. The degree of subcooling of the condenser cannot be automatically controlled. At present, in order to increase the degree of subcooling, an intermediate heat exchanger is generally added to the chiller, because the heat exchange medium in the intermediate heat exchanger is Low pressure refrigerant vapor and high pressure refrigerant liquid, so that the effect of increased subcooling is limited. 2. The compressor in the flooded water chiller is easy to absorb liquid, which will easily cause the compressor to run out of oil and compress the compressor liquid, causing damage to the compressor. In order to avoid the compressor with liquid in the current flooded chiller, The evaporator cylinder is made very large, and the arrangement of the heat exchange tubes is very low, resu...

AI Technical Summary

Problems solved by technology

[0002] Existing water chillers have the following disadvantages: 1. The degree of subcooling of the condenser cannot be automatically controlled. At present, in order to increase the degree of subcooling, an intermediate heat exchanger is generally added to the chiller, because the heat exchange medium in the intermediate heat exchanger is Low pressure refrigerant vapor and high pressure refrigerant liquid, so that the effect of increased subcooling is limited

2. The compressor in the flooded water chiller is easy to absorb liquid, which will easily cause the compressor to run out of oil and compress the compressor liquid, causing damage to the compressor. In order to avoid the compressor with liquid in the current flooded chiller, The evaporator cylinder is made very large, and the arrangement of the heat exchange tubes is very low, resulting in an increase in the cost of the heat exchanger

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