Fruit differential-pressure rapid precooling technology

A fast and fruit technology, applied in the direction of preservation of fruits/vegetables by freezing/refrigeration, etc., can solve the problem of expensive equipment, and achieve the effects of short pre-cooling time, small pressure difference and remarkable effect.

Inactive Publication Date: 2013-01-09
XINJIANG XINJIYUAN AGRI & ANIMAL HUSBANDRY DEV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment of this pre-cooling technology is expensive, and t

Method used

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  • Fruit differential-pressure rapid precooling technology

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Experimental program
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Example Embodiment

[0008] Embodiment 1, this kind of fruit product differential pressure rapid pre-cooling technology: a completely sealed differential pressure rapid pre-cooling room 2 is set in the high temperature cold storage 1 (high temperature cold storage is also fresh-keeping cold storage), and the volume of the differential pressure rapid pre-cooling room 2 is smaller than that of the high temperature cold storage 1 One quarter of the volume, with sliding automatic sealing door 3, vacuum pressure automatic exhaust pump 4, automatic control pressure gauge 5, automatic air inlet 6 on the differential pressure quick pre-cooling room 2, to prevent fruit loss, differential pressure A humidifier is installed in the rapid pre-cooling room 2. Differential pressure rapid pre-cooling technology process: start the vacuum pressure automatic exhaust pump 4, exhaust to the outside of the differential pressure rapid pre-cooling room 2, and quickly cause the negative pressure state in the differential pr...

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Abstract

The invention discloses a fruit differential-pressure rapid precooling technology. A differential-pressure refrigeration storage is arranged in a high-temperature refrigeration storage, a sealing door, an exhaust pump, a pressure gauge and a gas inlet are arranged on the differential-pressure refrigeration storage, and a humidifier is arranged inside the differential-pressure refrigeration storage; and a rapid differential-pressure precooling process includes that the exhaust pump is started, gas is discharged out of the storage, a negative pressure state in the storage in achieved, heat caused by fruits enter the storage is discharge out of the storage rapidly, when the negative pressure in the storage reaches a low value, the exhaust stops discharging gas, the gas inlet is opened, cold air in the high-temperature refrigeration storage is led into the differential-pressure refrigeration storage by using differential pressure, the fruits are cooled down rapidly, when the inner differential pressure and the outer differential pressure of the differential-pressure refrigeration storage are balanced, the exhaust pipe is started and discharges gas outwards, 'discharging and leading' are performed, a circulation is achieved every three or five minutes for 2-3 hours, and the temperature of the fruits is reduced to the lowest. The fruit differential-pressure rapid precooling technology has the advantages of being fast in precooling, good in effect, low in water loss rate and capable of saving electrical power. Internal tissue cells of the fruits can not be damaged, and the storage and conveying quality and time of the fruits also can not be affected.

Description

technical field [0001] The invention relates to a precooling technology, in particular to a rapid precooling technology of fruit differential pressure. Background technique [0002] The pre-cooling of fruit after harvest and before storage and transportation is one of the important links of fruit storage and transportation preservation technology, and it is also an important technical measure to improve the quality of fruit storage and transportation, fruit price and prolong storage and transportation time. At present, the pre-cooling methods of postharvest fruits in China can be classified into two categories: cold air pre-cooling and ice water pre-cooling, and two methods: natural pre-cooling and artificial pre-cooling. But no matter which method is used, the two major indicators that are commonly pursued are still "pre-cooling indicators" and "cooling quality". Usually, ice water pre-cooling is faster and of higher quality than cold air pre-cooling; "artificial pre-cooli...

Claims

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Application Information

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IPC IPC(8): A23B7/04
Inventor 田勇李强儒
Owner XINJIANG XINJIYUAN AGRI & ANIMAL HUSBANDRY DEV
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