Capacitive frosting thickness detection device and detection method

Abstract

The invention discloses a capacitive frosting thickness detection device and a capacitive frosting thickness detection method, which relate to the technical field of frosting thickness detection. The capacitive frosting thickness detection device is characterized in that: a sampling region capacitance plate, an intermediate capacitance plate and a reference region capacitance plate are sequentially fixed on a fixing bracket in parallel at equal distance, a sampling region is form between the sampling region capacitance plate and the intermediate capacitance plate, a reference region is form between the intermediate capacitance plate and the reference region capacitance plate, and the reference region is filled with a reference dielectric; and a sampling circuit is connected to the outer side of the sampling region capacitance plate, and is connected to a data storage and analysis device by means of a data transmission line. According to the capacitive frosting thickness detection device and the capacitive frosting thickness detection method, the sampling reference is established by means of the intermediate capacitance plate and the reference region capacitance plate, and the capacitance between the sampling region capacitance plate and the intermediate capacitance plate is compared with the sampling reference, thus real-time detection of frosting thickness is realized, and defrosting is conducted conveniently when the frosting thickness reaches a defrosting requirement; and the precision of frosting thickness judgment is greatly increased, thereby avoiding energy waste caused by ineffective defrosting because the frosting thickness does not match the empirical criterion.

Description

technical field [0001] The invention relates to the technical field of frosting thickness detection, in particular to a device and a detection method for detecting frosting thickness. Background technique [0002] A refrigerator is a refrigeration device that maintains a constant low temperature. It is a common electrical appliance used for low-temperature preservation of food or other items in daily life. It is widely used in life and industry. Frosting is an inevitable problem in the use of refrigerators. When the evaporator is frosted too thick, the cooling effect of the refrigerator will drop sharply, and the temperature inside the refrigerator will not reach the set temperature. Preservation also causes the waste of energy. At present, the defrosting rules of the evaporator are mostly empirical rules obtained from experiments, and the defrosting cannot be carried out according to the actual detection of the frosting thickness. The defrosting is often carried out before...

AI Technical Summary

Problems solved by technology

Frosting is an inevitable problem in the use of refrigerators. When the evaporator is frosted too thick, the cooling effect of the refrigerator will drop sharply, and the temperature inside the refrigerator will not reach the set temperature. Preservation also causes waste of energy

At present, the defrosting rules of the evaporator are mostly empirical rules obtained from experiments, and it is impossible to defrost according to the actual detection of frosting thickness. It is often defrosted when the evaporator is not yet frosted, resulting in a lot of energy waste.

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