Method for judging freezing point according to food volume, controller and refrigeration equipment

Abstract

The invention relates to the field of refrigeration control, in particular to a method for judging a freezing point according to food volume, a controller and refrigeration equipment. According to themethod for judging the freezing point according to the food volume, the controller and the refrigeration equipment disclosed by the invention, whether food gets into a frozen state or not is judged by utilizing that the volume of the food is different at different temperature. Food temperature is controlled to be within a reasonable range by combining the volume change of the food with temperature control. If the food gets into the frozen state, the refrigeration equipment can enter a warming-up mode immediately to stop a process that water in the food continues to form ice crystals, so thatthe food cannot be frozen; when food temperature reaches a certain value, the food is cooled immediately; the cooling process and the warming-up process are repeated for multiple times in such a manner, so that the food temperature keeps at 0 DEG C to freezing point temperature most of the time or all the time, while the freezing point temperature is between -10 DEG C and 0 DEG C. The freezing point of the food is effectively judged by utilizing the change rate of the food volume; the volume change in the food and the temperature control are effectively controlled to reasonably control the food temperature to reach a critical state that the food is not frozen but fresh, and therefore the food is enabled to be not frozen but fresh, the fresh-keeping period is effectively prolonged, and thefood maintains nutritive and delicious.

Description

technical field [0001] The invention relates to the field of refrigeration control, in particular to a method for judging the freezing point based on food volume, a controller and refrigeration equipment. Background technique [0002] In order to extend the shelf life of food, freezing technology has always been the most common and effective method. For example, frozen meat at -18°C can generally be stored for 6 to 12 months, but the most serious problem is that it is inconvenient to thaw, and the food quality after thawing and The taste has dropped significantly. [0003] At present, it mainly depends on obtaining the temperature value of the food to judge whether the food is in a frozen state. The methods for obtaining the temperature mainly include: [0004] 1. Non-contact temperature sensors, such as infrared sensors: Infrared sensors with an accuracy of 1°C cannot obtain the accurate temperature value of the food, so it is impossible to accurately judge whether the foo...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method for judging the freezing point based on the volume of food, a controller and a refrigeration device to solve the problem that the time point when the food enters the frozen state is not easy to control, and the food is prone to freezing; and after freezing, it is inconvenient to thaw and the quality of the food declines question

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