Unlock instant, AI-driven research and patent intelligence for your innovation.

Fruit differential pressure precooling method and device

A pressure difference pre-cooling and fruit technology, which is applied in the field of agricultural product storage, can solve the problems of fruit dehydration quality, decline, and slow pre-cooling speed, and achieve the effects of improving severe dehydration, improving fruit quality, and increasing specific heat

Inactive Publication Date: 2013-12-04
SOUTH CHINA AGRI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pre-cooling speed of the traditional pressure-difference ventilation pre-cooling method is relatively slow, and because the frosting of the evaporator in the cold storage reduces the relative humidity of the air and the evaporation loss of material moisture caused by the ventilation itself, it usually causes different degrees of fruit damage. dehydration and quality degradation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fruit differential pressure precooling method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the fruit is placed in the fruit pre-cooling box 6 after picking, and placed according to the general pressure differential pre-cooling method, so that the mixed gas of the atomized ice water and air mixing channel 5 completely passes through the fruit pre-cooling box 6; the air inlet channel 1 , Atomized ice water and air mixing channel 5, fruit pre-cooling box 6 and air outlet channel 8 form a closed channel, and the pressure difference fan 7 provides pressure difference for the above-mentioned channel when it works, and the air in the channel flows.

[0022] The main measurement and control system 9 controls the operation of the atomization device 2, atomizes the cold water in the ice water system 3, mixes it with the air in the air inlet channel 1, and enters the atomized ice water and air mixing channel 5; the water level and temperature measurement and control system 4 detects the ice in real time. The height and temperature of the cold ...

Embodiment 2

[0026] The working principle of the device is the same as that of Embodiment 1. When the device is directly placed in a large-scale cold storage, the ice water system 3 does not need independent refrigeration equipment, and only needs to place a sufficient amount of ice water mixture in its container. The system directly uses the low-temperature air and low-temperature water mist in the cold storage to pre-cool the fruit. At this time, the air inlet channel 1 and the air outlet channel 8 are in an open state, circulating in the cold storage.

Embodiment 3

[0028] The working principle of the device is the same as in Embodiment 1. If there is no large-scale cold storage, the device can operate independently. The ice water system 3 needs independent refrigeration equipment to maintain the low temperature of the ice water system 3, and the air outlet channel 8 and the air inlet channel 1 are closed to form Closed pre-cooling system. The pre-cooling mixed gas circulates in the device to achieve the effect of pre-cooling the fruit.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fruit differential pressure precooling method and device. A cold water atomization link is to added to a traditional differential pressure precooling method, and low-temperature spray mixed gas with high specific heat is employed for precooling of fruits, so as to accelerate a precooling rate. The device comprises a wind inlet channel, an atomization device, an ice water system, a water level and water temperature measurement and control system, a mixed channel of atomized ice water and air, a fruit precooling box, a differential pressure fan, a wind outlet channel and a main measurement and control system. According to the invention, based on the traditional differential pressure precooling method, the cold water atomization link is introduced to increase the specific heat of the cooling air, enhance cooling effect, shorten cooling time and improve fruit quality.

Description

technical field [0001] The invention relates to the field of storage of agricultural products, in particular to a method and device for pre-cooling fruit by pressure difference. Background technique [0002] Subtropical fruits are generally difficult to store, and they are easy to rot and deteriorate after harvest. Fresh-keeping storage is an important means and way to increase the added value of subtropical fruits. Pre-cooling is the most important part of fruit preservation and storage. It can quickly remove the field heat after harvesting, reduce respiration, delay its ripening and aging speed, help maintain its nutrients and freshness, and improve the fruit's tolerance to low temperature. Reduce or delay the occurrence of chilling damage, and at the same time reduce the cooling load of cold storage and transportation equipment. However, the pre-cooling speed of the traditional pressure-difference ventilation pre-cooling method is relatively slow, and because the frostin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/04
Inventor 杨洲闫国琦李君郭健伟廖玮玲林家研
Owner SOUTH CHINA AGRI UNIV