Thermosyphon type reboiler for industrial refrigeration device

Abstract

The invention relates to a thermosyphon type reboiler for an industrial refrigeration device. The thermosyphon type reboiler for the industrial refrigeration device comprises a gas-liquid separator and a dry-type evaporator located under the gas-liquid separator, wherein the upper portion of the gas-liquid separator is connected with an air sucking pipe connected with an air sucking port of a compressor. The thermosyphon type reboiler for the industrial refrigeration device is characterized in that an inlet pipe box is arranged at the inlet of the dry-type evaporator, an outlet pipe box is arranged at the outlet of the dry-type evaporator, a heat exchange coil pipe is arranged in the inlet pipe box, one end of the heat exchange coil pipe is a refrigerant liquid inlet, the other end of the heat exchanger coil pipe is connected with an expansion liquid supply throttling unit, the expansion liquid supply throttling unit is connected with the inlet end of the gas-liquid separator, a liquid outlet of the gas-liquid separator is communicated with the inlet pipe box through a liquid outlet pipe, the outlet pipe box is connected with an air return pipe, and the air return pipe is communicated with a cavity at the upper portion of the gas-liquid separator. The thermosyphon type reboiler for the industrial refrigeration device improves the energy efficiency of the system, improves the stability of a throttling device, reduces the size of the throttling device, and lowers controlling cost.

Description

technical field [0001] The invention relates to a low-temperature heat exchanger for industrial refrigeration equipment, in particular to a thermosiphon reboiler combined with a novel dry evaporator for low-temperature heat exchange and a horizontal gas-liquid separator for industrial refrigeration equipment. Background technique [0002] In the field of industrial refrigeration, it is often necessary to obtain a lower temperature refrigerant. Generally, the heat exchange efficiency of the traditional shell and tube heat exchanger is relatively low. In order to improve the efficiency of the heat exchanger at low temperature heat exchange, it is widely popular in China. And use a thermosiphon reboiler, which consists of two parts, the upper part is a horizontal gas-liquid separator, and the lower part is a dry evaporator (belonging to a gravity type recirculation evaporator). The throttled refrigerant liquid enters the gas-liquid separator for gas-liquid separation, and the r...

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Problems solved by technology

The resulting effect is: on the one hand, the effective heat transfer length of the heat exchange tube is reduced, and the heat transfer efficiency is weakened; on the other hand, due to the existence of sensible heat, the pure liquid refrigerant occupies a large volume in the heat exchange tube. Increased evaporator refrigerant charge

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