Heat pump type pressure gradient fruit vegetable heat treatment library

Abstract

The invention discloses a heat pump type pressure gradient fruit vegetable heat treatment library. The library is composed of a library entry, a heat pump system, a circulation air system and a humidifying system, the library entry is divided into four parts of air treatment, air supply plenum, fruit vegetable heat treatment and return air plenum. The upper end and the lower end of the clapboard are respectively provided with three centrifugal fans and three pressure gradient fans, an air supply homogenizing plate and a return air floor plate are respectively arranged at the upper part and the lower part in the library, and a fruit vegetable heat treatment chamber is formed between the two plates. An air supply plenum chamber is formed between the air supply homogenizing plate and the upper top wall of the library entry, and a return air plenum chamber is formed between the return air floor plate and the lower bottom of the library entry. The condenser of the heat pump system is arranged in an air treatment chamber, a centrifugal humidifier is arranged above the right side of the clapboard, and the return air floor plate is placed with a fruit vegetable box. Pressure gradient air supply is adopted, so that treatment time can be reduced. The invention adopts heat pump heat source, the heat pump can supply 3-5 units of heat into the library while a compressor consumes every 1 unit electricity; compared with the electric heating method, fruit vegetable heat treatment energy consumption can be obviously reduced, and energy conservation effect of the system is obvious.

Description

technical field [0001] The invention belongs to the food cold chain technology, and in particular relates to a device for post-harvest heat treatment of fruits and vegetables. Background technique [0002] In recent years, the output of fruits and vegetables in my country ranks first in the world, but most of our fruits and vegetables are put on the market in a natural state, and the post-harvest loss is very serious. According to statistics, the post-harvest loss rate of my country's harvested fruits and vegetables is as high as 20% to 30%. Therefore, energy-saving fruit and vegetable preservation technology and equipment are very important for the development of my country's agricultural economy. Heat treatment of fruits and vegetables refers to a physical fresh-keeping method that puts harvested fruits and vegetables in non-lethal high temperature for a short period of time for pre-storage pretreatment. The heat treatment methods of fruits and vegetables can be divided i...

AI Technical Summary

Problems solved by technology

However, the lack of professional heat treatment equipment has become the main obstacle restricting the commercial application of postharvest heat treatment technology for fruits and vegetables. Therefore, it is of great significance to develop an energy-saving and applicable postharvest heat treatment equipment for fruits and vegetables

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