Thermostatic controller

A constant temperature controller and temperature rise control technology, applied in temperature control, electric temperature control, control/regulation system, etc. Low-level problems, to achieve the effect of high degree of automation, small temperature control error, and good reliability

Active Publication Date: 2014-04-02
中山市众安温控器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the thermostats sold on the market only have a single control function of heating or cooling, and the temperature control accuracy is low, which cannot meet the requirements of constant temperature control.

Method used

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Examples

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Embodiment Construction

[0013] The thermostatic controller takes the single-chip microcomputer as the core component, uses the electric contact mercury thermometer to set the temperature, and realizes the temperature control by adjusting the on and off cycle of the electric contact mercury thermometer. After the single-chip microcomputer detects the on-off state of the electric contact mercury thermometer, it automatically recognizes the temperature rise or fall. When the temperature is raised, it is heated by an electric heating plate and controlled by a single-chip microcomputer; when the temperature is lowered, it is cooled by a semiconductor refrigerator and controlled by a single-chip microcomputer.

[0014] After setting a certain temperature value with the electric contact mercury thermometer in the automatic identification circuit of temperature rise and fall, two situations may occur: (1) The temperature of the controlled object does not reach the set temperature value. At this time, the el...

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Abstract

The invention discloses a thermostatic controller, consisting of a temperature rise / drop automatic identification circuit, a temperature rise control circuit, a temperature drop control circuit, a temperature anomaly alarming circuit and a power source, wherein the temperature rise / drop automatic identification circuit consists of resistors R1, R2 and R3, an electric contact mercurial thermometer WDJ and an operational amplifier U1A; the temperature rise control circuit consists of a single-chip microcomputer, a NAND gate U3B and an electric hot plate temperature rise circuit; the temperature drop control circuit consists of a single-chip microcomputer, a NAND gate U3C, NOT gates U2A, U2B and U2C and a semiconductor cooler temperature drop circuit. According to the thermostatic controller, the integrated control function of temperature rise and temperature drop is realized, the degree of automation is high, the temperature control error is small, and the reliability is good.

Description

technical field [0001] The invention relates to a constant temperature controller capable of temperature raising and lowering control. Background technique [0002] At present, the thermostats sold on the market only have a single control function of heating or cooling, and the temperature control accuracy is low, which cannot meet the requirements of constant temperature control. Contents of the invention [0003] In order to overcome the drawbacks of current thermostats that can only control the temperature in a single way of raising or lowering the temperature, the present invention provides a constant temperature controller that integrates the functions of temperature raising and lowering control. [0004] The technical solution adopted by the present invention to solve the technical problem is: a constant temperature controller, which is composed of an automatic identification circuit for temperature rise and fall, a temperature rise control circuit, a temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/275G05D23/30
Inventor 秦辉
Owner 中山市众安温控器有限公司
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