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 precooling device, in particular to a mobile vacuum precooling equipment for agricultural products. Background technique [0002] Cooling fruits and vegetables, food, etc. to a suitable temperature to prolong their shelf life is called pre-cooling. At present, there are four main ways to pre-cool fruits and vegetables: water-cooled pre-cooling, strong wind pre-cooling, differential pressure pre-cooling, and vacuum pre-cooling. Vacuum cooling and pre-cooling was developed in the 1960s. Later, with the continuous advancement of vacuum technology, vacuum cooling has been vigorously developed and widely used due to its unique and incomparable advantages, especially in developed countries such as Europe, America and Japan. The country has adopted vacuum cooling as the first process after fruits and vegetables are picked, which has improved the variety and quality of fruits and vegetables. At present, the processing capacity of vac...

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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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