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Fruit and vegetable precooling device

A fruit and vegetable and cooling box technology, applied in the direction of freezing/refrigerating preservation of fruits/vegetables, etc., can solve problems such as poor taste, and achieve the effects of fast heat transfer speed, energy saving control accuracy, convenient and stable operation

Inactive Publication Date: 2011-07-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

As a result, the incidence of bad taste due to corruption is as high as 15-20%, and further improvement is extremely needed

Method used

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  • Fruit and vegetable precooling device
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention will not be limited.

[0020] see figure 1 , figure 1 It is a structural schematic diagram of the fruit and vegetable precooling device of the present invention. As shown in the figure, a fruit and vegetable precooling device includes a cooling box and a refrigeration unit 15. The cooling box is composed of an inner shell 12 and an outer shell 10. The evaporation coil 11 of the unit 15; also includes:

[0021] Hydrogen filling device: The hydrogen filling bottle 18 is connected to the second air pump 3, the second hydrogen detector 6 and the second valve 7 in sequence through the gas pipe, and the second valve 7 is installed on the top of the cooling box.

[0022] Hydrogen recovery device: the hydrogen recovery bottle 1 is sequentially connected to the first air pump 2, the gas drying box 4, th...

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Abstract

The invention relates to a fruit and vegetable precooling device. The fruit and vegetable precooling device comprises a cooling box, a refrigerating unit (15), a hydrogen-filling device, a hydrogen-recovering device and a temperature-measuring device, wherein the cooling box consists of an inner shell (12) and an outer shell (10); and an evaporating coil (11) of the refrigerating unit (15) is paved between the inner shell (12) and the outer shell (10). Hydrogen is filled into the cooling box and serves as a heat-transfer medium, so that cold is transferred quickly from the evaporating coil tofood, precooling time is effectively shortened, energy consumption of the refrigerating unit is reduced, and operating cost is reduced.

Description

technical field [0001] The invention relates to a pre-cooling device, in particular to a pre-cooling and fresh-keeping device for storing vegetables, fresh flowers and fruits after picking and storing aquatic products. Background technique [0002] At present, the research on the cooling methods of fruits and vegetables mainly focuses on three aspects: vacuum cooling, air cooling and water cooling. Vacuum pre-cooling is to use a vacuum pump to pump out the air in the vacuum chamber, so that the air pressure around the food is lower than the evaporation pressure of its own internal water, so that the water inside the food evaporates quickly, and carries a large amount of food through the pores or lenticels of its skin. The latent heat of evaporation leaves the food to cool it down. This method is more suitable for leafy vegetables (cabbage, Shanghai green, etc.) with large voids and high water content, but for fruits with large internal water resistance and small skin water c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04
Inventor 宋晓燕刘宝林李琳徐海峰
Owner UNIV OF SHANGHAI FOR SCI & TECH
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