To effectively improve the uniformity of the temperature lowering process of frozen products, in the conventional structure, improve the large difference existing in the cooling rate of the frozen material at different positions in the food freezing process, A jet nozzle for an impact type quick freezing device which can be improved.SOLUTION: A plurality of V-shaped guiding grooves 1 uniformly arranged in parallel along the moving direction of a frozen material scraper conveyor 3 and a slit nozzle 2 communicating with the lower end of the V type guiding groove 1 are provided, and V The type guide groove 1 includes two long plates which are installed so as to be inclined oppositely. The V-shaped guide groove 1 has a rectangular transverse cross section and an inverted trapezoidal cross section in the lateral direction And the upper portions of two adjacent V-shaped guiding grooves 1 are connected by a flat plate, and the slit nozzle 2 includes two long plates facing each other and arranged in parallel, and the two slit nozzles 2 The upper ends of the elongated plates are respectively connected to the lower ends of the two elongated plates of the V-shaped guiding groove 1.BACKGROUND OF THE INVENTION【課題】冷凍物の降温過程の均一性を効果的に向上させ、従来の構造では食品冷凍加工過程に異なる位置での冷凍物の降温速度に存在する大きな差異を改善し、冷凍物の品質を向上できる衝撃式急速冷凍装置用ジェットノズルを提供する。【解決手段】冷凍物のスクレーパコンベア3の移動方向に沿って均等に平行配列された複数のV型導流溝1とV型導流溝1の下端に連通するスリットノズル2とを備え、V型導流溝1は、対向して傾斜するように設置された二枚の長尺状板を含み、V型導流溝1は横断面が長方形で、短手方向の縦断面が逆台形であり、隣接する2つのV型導流溝1の上部が平板により接続され、スリットノズル2は、対向して平行に設置された二枚の長尺状板を含み、スリットノズル2の二枚の長尺状板の上端がそれぞれV型導流溝1の二枚の長尺状板の下端に接続される。【選択図】図1
