Method for acquiring internal temperature field of baking box

An internal temperature and oven technology, applied in the field of calculating the plane heat distribution inside the oven, can solve the problems of inability to simulate the oven temperature field and low temperature measurement accuracy.

Inactive Publication Date: 2014-09-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcomings of low temperature measurement accuracy in the traditional oven and the inability to simulate the temperature field inside the ove...

Method used

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  • Method for acquiring internal temperature field of baking box
  • Method for acquiring internal temperature field of baking box
  • Method for acquiring internal temperature field of baking box

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings.

[0064] With reference to the accompanying drawings, a method for obtaining a temperature field inside an oven, the method includes the following steps:

[0065] (1) Calculation of radiation force

[0066] The heat transfer mode of the oven is mainly heat radiation, and most objects are expressed in the form of gray body heat radiation. Materials of different materials have thermal emissivity of different wavelengths in the thermal range, and the thermal radiation force can be obtained by using the Stephen-Boltzmann law, the formula is as follows:

[0067]e(T)=εe b (T) = εσT 4

[0068] Note: e(T) is the radiation force of the gray body, ε is the blackness of the actual object, e b (T) is the radiation force of the black body, σ is the Stefan-Boltzmann constant, numerically 5.67×10 -8 W / m 2 ·K 4 , T is the temperature of the object.

[0069] (2) Calculation of v...

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Abstract

The invention relates to a method for acquiring an internal temperature field of a baking box. The method comprises steps of radiation force calculation, gray body angle coefficient calculation, net radiation quantity calculation and variable and sensitivity analysis.

Description

technical field [0001] The invention relates to the calculation of the internal plane heat distribution of the oven, especially after the variable is analyzed, the variable value is adjusted to obtain a better heat distribution. Background technique [0002] Due to the improvement of people's living standards now, most of the kitchen tools are equipped with ovens. However, the oven also has limitations in its use. The same plane inside is not evenly heated. For example, when a larger rectangular baking pan is placed in the plane, the middle is not yet cooked, but the four corners have burnt phenomenon, which makes most Users feel a little headache about the effect of using it. [0003] The internal structure of a common oven is as follows figure 1 As shown, the upper and lower sides are composed of heating pipes, which heat the inside of the oven, and the middle area can be used for placing grills, usually with about 2 layers. [0004] At present, most of the heat distrib...

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Application Information

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IPC IPC(8): G01J5/52
Inventor 王卫红杨洁
Owner ZHEJIANG UNIV OF TECH
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