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Intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation

A drying system and terahertz technology, applied in the field of terahertz heating, can solve the problems of unsatisfactory drying effect, old electric heating drying technology, uneven heating area, etc.

Active Publication Date: 2021-09-03
杭州明莱能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The steam boiler will generate water vapor during the drying process, the drying effect is not ideal, and it will be mixed with water;
[0005] 2. The electric heating drying technology is old, the heating area is uneven, the cost is high, and the thermal efficiency is low

Method used

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  • Intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation
  • Intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation
  • Intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The terahertz heating plate of the present invention is formed by sintering the modified tin dioxide electrothermal radiation film and glass ceramics; the terahertz circuit board is embedded in a high-temperature-resistant black glass-ceramic plate as a heat radiation source, and the target object is heated and dried ;

[0047] As an example provided by the present invention, preferably, the modified tin dioxide electrothermal radiation film is doped with nitrogen element, and the percentage content of nitrogen element in the tin dioxide film doped with nitrogen element is 0.4- 0.6, through the optimization of the formula of tin dioxide electrothermal radiation film, the terahertz radiation intensity produced by sintering with glass ceramics is high, combined with the intelligent control system provided by the present invention, the terahertz action distance can reach more than 2 meters, and the conversion efficiency is improved To more than 97%, the industrial applicat...

Embodiment 2

[0052] Depend on figure 1 It can be seen that the system takes an 8-bit microprocessor as the core, and the touch screen of the man-machine module exchanges data with the PC through the 485 chip. The target heating temperature can be input through the touch screen and exchange data with the PC through RS-485 communication. The current heating temperature is determined by the The temperature-to-digital converter with built-in bandgap temperature sensor and Σ-Δ analog-to-digital conversion function can provide overheat output and also serve as a temperature detector LM75A temperature sensor detection, directly convert the detected temperature signal into a digital signal, and transmit it to the microcontroller , and processed by the microcontroller; the microcontroller compares the current heating temperature with the set temperature, gives the control amount through a certain intelligent control algorithm, controls the optocoupler, and then controls the conduction angle of the t...

Embodiment 3

[0055] As an embodiment provided by the present invention, preferably, the main control module compares the current heating temperature with the set temperature, and obtains the control amount through an intelligent control algorithm, and the main control module includes a PIC16F1829-E / ML single-chip microcomputer, an external clock circuit , Reset circuit; MCU reset includes power-on reset (POR), brown-out reset (BOR), Reset, WDT reset, RESET instruction, stack overflow, stack underflow, programming mode exit 8 reset modes, the present invention adopts is reset mode. is an optional external input that resets the device, The function is controlled by the MCLRE bit of configuration word 1 and the LVP bit of configuration word 2. The specific control mode is shown in Table 1 configuration shown. when enabled And when the pin remains low, the device will remain in the reset state, the MCLR pin is connected to VDD through an internal weak pull-up, and the reset will not ...

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Abstract

The invention discloses an intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation, and relates to the technical field of intelligent heating. The target heating temperature exchanges data with the central control module through the man-machine module and RS-485 communication, the current heating temperature is detected by the temperature sensor, the detected temperature signal is directly converted into a digital signal, and the digital signal is transmitted to the central control module and processed by the central control module, the central control module compares the current heating temperature with the set temperature, gives a control quantity and controls the optocoupler through a certain intelligent control algorithm, and then controls the conduction angle of the thyristor through the optocoupler, thereby achieving the effect of controlling the radiation intensity of the terahertz heating plate, enabling the heating temperature to be adjustable all the time, better meeting the requirements of modern high efficiency, environment friendliness and automation, and in the production process, due to the characteristic of uniform heating, the product quality can be improved, so that the research has profound significance.

Description

technical field [0001] The invention belongs to the technical field of terahertz heating, in particular to an intelligent constant-temperature variable-frequency drying system based on terahertz heat radiation. Background technique [0002] For example, Chinese patent CN211171412U discloses a drying system for papermaking, including a boiler, a steam main pipe connected to the boiler, a drying module connected to the steam main pipe, a condensate tank and a return pump; Chinese patent CN205213970U discloses a food dryer, Including drying box, conveying chain plate, transmission motor and heating system, Chinese patent CN208688227U discloses a continuous dryer cold air waste heat recovery device, including: filter chamber, heating chamber, gas uniform chamber, etc., existing Most of the drying and dehumidification equipment in papermaking, pharmaceutical, chemical, food and other industries are realized by steam boiler or electric heating. [0003] The main flaws are: [00...

Claims

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Application Information

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IPC IPC(8): G05D23/20
CPCG05D23/20Y02P70/10
Inventor 王志仿
Owner 杭州明莱能源科技有限公司
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