Patent ID: 8919141

Claim:
Refrigeration equipment with a sleeve-type collection pipe for an artificial skating rink, which at least comprises a refrigeration system, a refrigeration liquid supplying collection-pipe, and a return-gas collection-pipe; the return-gas collection-pipe sheathes the refrigeration liquid supplying collection-pipe along the length direction; the refrigeration system is provided with a liquid supplying main pipe and a return gas main pipe sheathed thereon; both ends of the liquid supplying main pipe are respectively connected with the refrigeration liquid supplying collection-pipe and an output end of the refrigeration system, and both ends of the return-gas main pipe are respectively connected with the return-gas collection-pipe and an input end of the refrigeration system; multiple groups of circulation pipes arranged in rows are juxtaposed at both sides of the return-gas collection-pipe along the lateral direction; a first elbow connector is arranged between the liquid supplying end of the circulation pipe and the return-gas collection-pipe, and a second elbow connector is arranged between the return-gas end of the circulation pipe and the return-gas collection pipe; a liquid refrigerant jet pipe is set between the first elbow connector and the refrigeration liquid supplying collection-pipe for communicating the first elbow connector and the refrigeration liquid supplying collection-pipe, and a return-gas hole is provided on the return-gas collection-pipe where it connects the second elbow connector.