A water-cooled chiller

Abstract

The invention belongs to the field of chillers, and in particular relates to a water-cooled chiller, which includes a refrigeration cycle, a condenser water-cooled heat dissipation cycle, and an evaporator cold water control cycle. The expansion valve in the refrigeration cycle includes a valve housing, a push rod A, a diaphragm, Sealing cover and ejector rod B, etc., wherein a fixed block A is installed between the housing tank C used to accommodate the refrigerant in the valve housing and the through-channel for circulating the refrigerant; during the initial start-up period of the chiller, the housing tank C15 The pressure change of the refrigerant is small, so that the pressure difference between the two sides of the diaphragm causes the diaphragm to drive the moving parts such as the ejector rod A and the ejector rod B to move slowly, reducing the pressure of the ejector rod A and the ejector rod. The vibration frequency of B during the initial start-up period of the water cooler prevents the "howling" phenomenon caused by the rapid movement and reset of the ejector rod A and ejector rod B in a short time.

Description

technical field [0001] The invention belongs to the field of chillers, in particular to a water-cooled chiller. Background technique [0002] Chillers are commonly known as freezers, refrigerators, ice water machines, chillers, cooling machines, etc., because they are widely used in various industries, so there are countless names. [0003] In the refrigerant circulation system of the water chiller, the liquid refrigerant in the evaporator absorbs the heat in the water and begins to evaporate. The refrigerant absorbs the heat from the water, and the liquid refrigerant also completely evaporates into a gaseous state and then is sucked into and compressed by the compressor. Gas-state refrigeration The refrigerant releases heat through the condenser, condenses into a liquid, and becomes a low-temperature and low-pressure refrigerant after throttling through the thermal expansion valve and enters the evaporator to complete the refrigerant cycle process. [0004] There are three...

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Problems solved by technology

[0006] In addition, the switch of the valve is realized by the movement of the spool in the Z-axis direction, but in fact the spool has degrees of freedom in the three directions of X, Y, and Z, so that the spool has a lower natural frequency, thus The valve core is prone to vibration in the three directions of X, Y, and Z, and it is more likely to cause the phenomenon of "howling"

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