公开(公告)号：US3871190A

公开(公告)日：1975-03-18

申请号：US46881674

申请日：1974-05-10

Applicant: INTEGRAL PROCESS SYST INC

Inventor： HARPER JOHN D ,  BREYER FREDERICK ,  WAGNER RICHARD

IPC: A23B7/04 ,  A23L3/375 ,  F25D3/11 ,  F25B19/00

CPC classification number: A23L3/375 ,  A23B7/0408 ,  F25D3/11

Abstract: A flash freezing system is provided in which articles to be frozen are transported through an elongated thermally isolated chamber. Liquid nitrogen is sprayed onto the articles where it flashes, at least partially, to gas which passes toward the article entrance end of the chamber. Pumping means is provided along with a suction inlet and discharge outlet in the chamber to recirculate the gas at a high velocity and the freshly generated gas mixes with the recirculated gas in a high velocity stream impinging on each article. Means are provided to withdraw a portion of the recirculated gas from the entrance end of the chamber.

Abstract translation: 提供一种快速冷冻系统，其中要冷冻的物品通过细长的隔热室输送。 将液氮喷射到物品上，其中至少部分地喷射到通向腔室物品入口端的气体上。 抽吸装置与腔室中的吸入口和排出口一起提供，以高速度使气体再循环，并且新产生的气体以与撞击在每个物品上的高速流中的再循环气体混合。 提供装置以从腔室的入口端部抽回一部分再循环气体。