Mobile vacuum precooling device

Abstract

The present invention discloses a movable vacuum pre-cooling device; the device consists of a vacuum groove, a vapor collecting system, a refrigeration system, a vacuum system and an automatic control system. The vacuum groove is a combined structure which is a little bent and equipped with stiffener and with a stainless steel thin plate as the lining; the structure is characterized by high external pressure resistance and light weight and the structure is convenient for movement. The vapor collecting system consists of the refrigeration system and a vapor collector and the vapor collecting system is used for removing vapor and ensuring the normal operation of the vacuum system. The automatic control system can set different vacuum degrees and operational times according to the different natures of processed agricultural product and different pre-cooling temperatures and times; the automatic control system can also control a vacuum pump and a water charging system according to different temperatures and humidity in the vacuum groove to make the temperature and humidity in the vacuum groove meet the required value. The device is equipped on a movable support, which can be moved. The vacuum pre-cooling device is characterized by great handling capacity, fast per-cooling speed, high automation level and good economic benefit.

Description

Technical field [0001] The invention relates to a pre-cooling device, in particular to a mobile vacuum pre-cooling device for agricultural products. Background technique [0002] Cooling fruits, vegetables, foods, etc. to a suitable temperature to extend their shelf life is called pre-cooling. At present, there are four main methods of pre-cooling fruits and vegetables: water-cooling, strong-air pre-cooling, differential pressure pre-cooling, and vacuum pre-cooling. Vacuum cooling and precooling was developed in the 1960s. Later, with the continuous progress of vacuum technology, vacuum cooling has been vigorously developed and widely used due to its unique and unparalleled advantages, especially in Europe, America and Japan. The country has adopted vacuum cooling as the first process after harvesting fruits and vegetables to improve the variety and quality of fruits and vegetables. At present, the processing capacity of vacuum precooling accounts for more than 60% of the total a...

AI Technical Summary

Problems solved by technology

However, the research on vacuum pre-cooling in our country is still relatively backward. At present, ZL200610005348.5 mainly proposes a vacuum pre-cooling and fresh-keeping equipment, ZL03129156. Vacuum pre-cooling device for ventilation unit, ZL03219877.9 proposes a vacuum pre-cooling and fresh-keeping equipment, ZL96114397.5 proposes a vacuum pre-cooling and modified atmosphere fresh-keeping device and its fresh-keeping method

Compared with foreign technologies, the efficiency of these domestic technical equipment is relatively low, and large-scale vacuum precooling equipment relies on the introduction

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