Jet nozzle structure of impact-type freezer

A jet nozzle structure of an impact-type freezer, comprising

• an orifice plate;
• a plurality of diversion channels;
• and
• a plurality of jet nozzles;
• wherein a plurality of circular openings in a linear arrangement are uniformly distributed in the orifice plate;
• the diversion channel is a hollow truncated cone comprising a top opening and a bottom opening;
• the top opening of the diversion channel is connected to the circular opening, and the bottom opening of the diversion channel is connected to an inlet of the jet nozzle;
• the jet nozzle is a hollow cylinder;
• a distance between two adjacent circular openings is 40-100 mm, a diameter of the circular opening is 30-80 mm, and a height of the diversion channel is 20-60 mm;
• an inner diameter of the jet nozzle is 6-15 mm and a height of the jet nozzle is 20-40 mm;
• a distance between the bottom opening of the jet nozzle and a conveyor belt arranged below the jet nozzle is 10-100 mm;
• and the distance between the two adjacent circular openings is a distance between geometric centers of two circular openings.