Ejector using swirl flow

An ejector using a swirl flow in a vapor compression refrigeration system comprising a condenser and an evaporator, the ejector comprising:

• an ejector body including:
• a main inlet into which a main flow flows,
• a nozzle section in fluid communication with the main inlet, a mixing portion in fluid communication with the nozzle section,
• a diffuser in fluid communication with the mixing portion, and a discharge portion in fluid communication with the diffuser, wherein the main inlet is in fluid communication with the condenser;
• a suction pipe disposed to be movable in a lengthwise direction of the suction pipe in a center of the ejector body, the suction pipe including a through-hole into which a suction flow flows, wherein the through hole is in fluid communication with the evaporator,
• the suction pipe including:
• a leading inclined portion which is provided at a leading end of the suction pipe, and
• a middle inclined portion which is spaced apart from the leading inclined portion,
• wherein the middle inclined portion has a slope corresponding to a first slope portion of the nozzle section and the leading inclined portion has a slope corresponding to a second slope portion of the nozzle section;
• and
• a plurality of nozzle grooves formed on an outer surface of a leading end portion of the suction pipe, the plurality of nozzle grooves that forms a plurality of passages through which the main flow flowing into the main inlet is moved to the mixing portion when the leading end portion of the suction pipe is inserted in the nozzle section of the ejector body,
• wherein the main flow entering through the main inlet of the ejector body is moved to the mixing portion through the plurality of nozzle grooves so as to form a swirl flow, and is mixed with the suction flow entering through the through-hole of the suction pipe.

A vapor compression refrigeration cycle apparatus, comprising:

• a condenser;
• an evaporator;
• and
• an ejector using a swirl flow, wherein the ejector including:
• an ejector body comprising a main inlet into which a main flow in high pressure flows,
• a nozzle section in fluid communication with the main inlet, a mixing portion in fluid communication with the nozzle section,
• a diffuser in fluid communication with the mixing portion, and a discharge portion in fluid communication with the diffuser, wherein the main inlet is in fluid communication with the condenser;
• and
• a suction pipe inserted in a center of the ejector body, the suction pipe including:
• a through-hole into which a suction flow in low pressure flows,
• a leading end portion an outer surface of which forms a plurality of inclined passages with the nozzle section of the ejector body, the plurality of inclined passages allowing the main flow to be moved to the mixing portion so as to form a swirl flow, wherein the through hole is in fluid communication with the evaporator,
• a leading inclined portion which is provided at a leading end of the suction pipe, and
• a middle inclined portion which is spaced apart from the leading inclined portion,
• wherein the middle inclined portion has a slope corresponding to a first slope portion of the nozzle section and the leading inclined portion has a slope corresponding to a second slope portion of the nozzle section,
• wherein the main flow entering through the main inlet of the ejector body and the suction flow entering through the through-hole of the suction pipe are swirled and mixed in the mixing portion of the ejector body, and then are discharged outside through the diffuser and the discharge portion.