A facility for cooling products comprises a chamber for containing a product to be cooled, and a device for injecting a cryogenic fluid into the chamber, the device making it possible to inject the cryogenic fluid at one or more points located in a lower part (base) of the chamber, wherein the device comprises one or more injection nozzles connected to the lower part, wherein the cooling facility comprises a facility (120) for feeding the one or more injection nozzle with a flushing gas, wherein the one or more injection nozzles are fed with cryogenic fluid and flushing gas via a set of pipelines.