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Three-temperature section food quick freezing method and three-temperature section food quick freezer

A quick-freezing machine and food technology, which is applied in food preservation, food processing, food science, etc., can solve the problems of increasing the energy consumption of quick-freezing machines, and achieve the effects of small heat transfer temperature difference, uniform temperature distribution, and reduced energy consumption

Inactive Publication Date: 2011-05-18
TIANJIN UNIV OF COMMERCE
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  • Description
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Problems solved by technology

Due to ignoring the changes in temperature and heat load during the quick-freezing process of food, the evaporation temperature cannot be changed with the drop of food temperature, and the change of heat transfer temperature difference with the quick-freezing process of food is ignored. The heat transfer temperature difference in the quick-freezing machine will affect the quality of food Flavor and quick-freezing effect, increase the energy consumption of the quick-freezing machine

Method used

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  • Three-temperature section food quick freezing method and three-temperature section food quick freezer

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] In the method for quick-freezing food in three temperature sections of the present invention, the food is sequentially passed through the three temperature sections of pre-cooling temperature, crystallization temperature and cryogenic temperature to obtain quick-frozen food; the pre-cooling temperature is -1--5°C, and the food Pre-cooling from the initial temperature to the freezing point temperature, so that the moisture in the quick-frozen food is cooled to a saturated liquid state; the crystallization temperature is -20--25°C. At the crystallization temperature, the food passes through the maximum formation zone of ice crystallization, and the pure The water freezes into crystals from the outside to the inside, so that the water in the quick-frozen food freezes to a saturated solid state; the cryogenic temperature is -38--45°C. The ...

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Abstract

The invention discloses a three-temperature section food quick freezing method and a three-temperature section food quick freezer, aiming to reduce the power consumption of a refrigerating system in the quick freezing process and achieve the purpose of energy saving. The quick freezer comprises an quick freezer body and a refrigerating system, wherein the inside of the quick freezer body is provided with a food delivery device; the quick freezer body is provided with a feed port and a discharge port; the inside of the quick freezer body is separated into three chambers including a precooling chamber, a crystallization chamber and a cryogenic chamber in sequence by insulating materials or metal partitions; and the insides of the precooling chamber, the crystallization chamber and the cryogenic chamber are respectively provided with an evaporator and a cooling fan. By using the quick freezing method and the quick freezer, food passes through the precooling chamber, the crystallization chamber and the cryogenic chamber with three temperature sections in sequence to become quick-frozen food, the temperature distribution in each chamber is more uniform, and the temperature difference is small, thereby achieving the purpose of energy saving.

Description

technical field [0001] The invention relates to a quick-freezing method and a quick-freezing machine, more specifically, to a method for quick-freezing food at three temperature sections of pre-cooling temperature, crystallization temperature and deep-cooling temperature, and has a pre-cooling cavity, a crystallization cavity Three-temperature section food quick-freezer with body and cryogenic chamber. Background technique [0002] The traditional quick-freezing method, no matter the direct contact method or the indirect contact method, is to quick-freeze the food at the same temperature. Due to ignoring the changes in temperature and heat load during the quick-freezing process of food, the evaporation temperature cannot be changed with the drop of food temperature, and the change of heat transfer temperature difference with the quick-freezing process of food is ignored. Flavor and quick-freezing effect, increase the energy consumption of the quick-freezing machine. Conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/36
CPCY02P60/85
Inventor 申江曾善明苗惠刘兴华孙欢邓超宋烨
Owner TIANJIN UNIV OF COMMERCE
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