Method for detecting whether temperature abnormal materials are placed in refrigerator or not

Abstract

The invention provides a method for detecting whether temperature abnormal materials are placed in a refrigerator or not. The refrigerator comprises a refrigerator body internally divided into a plurality of storage spaces, a door body arranged at the front of the refrigerator body and a plurality of infrared sensors for sensing temperatures of the multiple storage spaces correspondingly. The method includes the steps that after the door body is opened, the multiple infrared sensors are controlled to collect temperature values; whether an temperature value collected by any one of the infrared sensors generates sudden change or not is judged; if yes, a first temperature change value obtained before and after the temperature abnormal materials are possibly placed into the abnormal storage space corresponding to the infrared sensor and a second temperature change value caused by heat exchange between the outer environment and the abnormal storage space before and after the temperature abnormal materials are possibly placed into the abnormal storage space are obtained; and whether the temperature abnormal materials are placed into the abnormal storage space or not is judged according to the first temperature change value and the second temperature change value. By means of the method, whether excessively hot food is placed into a certain storage space or not can be judged relatively accurately.

Description

technical field [0001] The invention relates to refrigeration and freezing equipment, in particular to a method for detecting whether items with abnormal temperature are placed in the refrigerator. Background technique [0002] Traditional refrigerators usually use a temperature sensor arranged inside the storage compartment to sense the temperature around the location where it is arranged, and use the temperature as a basis for refrigeration control. When using this control method to control the refrigerator, when the temperature measured by the temperature sensor is higher than the preset value, the refrigerator starts cooling. However, when the storage compartment is divided into a plurality of relatively independent storage spaces by the shelf partition, if the user puts hot food with a higher temperature into a certain storage space of the refrigerator, on the one hand, the temperature of the hot food Putting it in will affect the temperature of the storage space where...

AI Technical Summary

Problems solved by technology

However, when the storage compartment is divided into a plurality of relatively independent storage spaces by the shelf partition, if the user puts hot food with a higher temperature into a certain storage space of the refrigerator, on the one hand, the temperature of the hot food Putting it in will affect the temperature of the storage space where it is located, so that various bacteria that originally existed in the food inside the refrigerator can grow faster, which is not conducive to the healthy and safe preservation of food; on the other hand, if the storage room Indiscriminate refrigeration as a whole will cause waste of electric energy and slow cooling of the storage space where hot food is placed

[0003] In addition, when the refrigerator door is opened, putting in hot food with a higher temperature will cause the temperature of the storage space to change, and the storage space without hot food will also be heated due to natural convection between the external environment and the storage compartment. Exchange causes temperature changes, but there is no proper discrimination method to distinguish the above two situations in the prior art, resulting in inaccurate refrigeration control of refrigerators in the prior art

However, to increase the hardware cost of the refrigerator too much, and to provide a discrimination method that can more accurately distinguish the above two situations is a technical problem that has been eager to be solved in the refrigerator technology field but has not been solved all the time.

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