Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally

• Main Authors: JIA LEI, SHANG YUNHENG, ZHONG YU, ZAN SHICHAO, ZHOU DAO, LIU QINIE, HE YAFENG
• Format: Patent
• Language: Chinese; English
• Published: 17.07.2013
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention belongs to the technical field of refrigeration, and particularly to a pipe fitting for improving efficiency of an evaporator by enabling a refrigerant to flow spirally. The pipe fitting comprises an inlet pipeline, an outlet pipeline, and a spiral flow guide part used for communicating the inlet pipeline with the outlet pipeline and enabling the refrigerant to flow spirally. As the spiral flow guide part is arranged in the pipeline, the advection advancing way of a gas-liquid two-phase refrigerant output from an expansion valve is changed into a spiral flow advancing way. When the refrigerant flows spirally and forwards, all the refrigerant liquid is tightly close to the wall of the pipeline and flows forwards spirally under the action of the centrifugal force as the specific gravity of the liquid refrigerant is heavier than that of the gas refrigerant. At this moment, the practical contact area of the liquid refrigerant and the pipe wall is far greater than the contact area of the liquid refri