Method for selecting microwave oven temperature sensor sampling points

Abstract

The invention provides a method for selecting microwave oven temperature sensor sampling points. The method comprises the following steps: turning a microwave oven pallet in a circle and measuring temperature of an object to be unfrozen with temperature sensor sampling points repeatedly; obtaining lowest temperature from measurements of the temperature sensor sampling points, and adding fixed temperature based on the lowest temperature to obtain shield basic temperature; comparing the lowest temperature of each point and the shield basic temperature respectively, determining validity of the sampling points, eliminating interference of ambient temperature and temperature in a furnace chamber, and setting an effective unfreeze control parameter to achieve an expected effect of unfreeze operation of the microwave oven.

Description

technical field [0001] The invention belongs to the technical field of microwave ovens, and in particular relates to a microwave oven that measures the temperature of objects to be thawed multiple times through each sampling point before the magnetron works, and obtains the lowest temperature through comparison, and then excludes invalid sampling points, so that thawing can be performed accurately The selection method of temperature sensor sampling point. technical background [0002] A microwave oven is a device in which a magnetron generates microwaves after the power is turned on, and irradiates these microwaves on food and other heated objects to cook food. Such microwave ovens are classified into domestic microwave ovens equipped with small magnetrons and commercial microwave ovens equipped with large or multiple magnetrons. Microwave ovens can also be divided into household microwave ovens that generally use a glass turntable that rotates food, and commercial microwav...

AI Technical Summary

Problems solved by technology

In fact, because the object to be thawed does not always have uniform physical conditions and the same physical characteristics, the temperature value of the object obtained by the sensor through the sampling point is not true. When the ambient temperature is low, the ambient temperature will affect the furnace cavity The temperature inside the sensor will cause interference, and invalid sampling points will be recognized as valid, so the temperature of the object and the background temperature cannot be accurately distinguished. The temperature sensor cannot accurately obtain the temperature distribution of the food to be thawed, and it is impossible to judge the food objectively. The unfreezing effect of

Since invalid sampling points are identified as valid, the high-temperature control parameters of the microwave oven will be set to a high level during the thawing process, and the thawing process will end in a short time, resulting in a very low thawing rate of the object, and under-thawing will occur

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