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High-precision standard constant-temperature-and-humidity laboratory control system

A control system, constant temperature and humidity technology, used in heating and ventilation control systems, air conditioning systems, heating and ventilation safety systems, etc., can solve problems such as low control accuracy and inability to replenish fresh air, and achieve strong reliability and control accuracy. Improve and solve the effect of severe lag problems

Active Publication Date: 2015-01-21
李明
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, the present invention provides a high-precision standard constant temperature and humidity laboratory control system, which solves the problems of low control precision and inability to replenish fresh air in the traditional laboratory constant temperature and humidity control system

Method used

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as Figure 1 to Figure 7 As shown, in the first embodiment that the present invention proposes a high-precision standard constant temperature and humidity laboratory control system, it includes a rough control system and a fine control system, and the rough control system and the fine control system are respectively connected with the ambient air It is connected to the standard atmosphere, and the other end is connected to the fan of the indoor unit of the air conditioner. The rough control system is used to control the temperature in the laboratory to ensure that the temperature in the laboratory is lower than the set standard temperature.

[0027] The air duct sensor, control board circuit, frequency c...

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Abstract

The invention provides a high-precision standard constant-temperature-and-humidity laboratory control system which is used for solving the problems that a traditional constant-temperature-and-humidity laboratory control system is low in control precision and can not supplement fresh air. The high-precision standard constant-temperature-and-humidity laboratory control system comprises a rough control system and a fine control system. The rough control system and the fine control system are communicated with ambient air and normal atmosphere respectively, and the other end of the rough control system and the other end of the fine control system are connected with an air conditioner indoor unit fan. The high-precision standard constant-temperature-and-humidity laboratory control system further comprises a PLC control system used for regulating the rough control system and the fine control system. One end of the PLC control system is connected with a compressor on the rough control system and an electric heating device and a humidifying device on the fine control system, and the other end of the PLC control system is connected with a computer through a converter. The PLC control system is further connected with a fault alarming device used for generating alarming signals and can be replaced by a temperature and humidity automatic recorder without a pen.

Description

technical field [0001] The invention relates to a high-precision standard constant temperature and humidity laboratory control system, which belongs to the field of constant temperature and humidity control. Background technique [0002] The traditional laboratory constant temperature and humidity control system mostly adopts an integrated (precision air conditioner) system, which integrates a compressor, an automatic control system, and a humidification and heating system; it adopts the traditional static position balance principle to implement temperature and humidity One-step control, the temperature is low to heat up, the humidity is low to humidify, the temperature is high to use the compressor to cool down, and the humidity is high to use the compressor to dehumidify. The biggest disadvantage of this principle is that it cannot eliminate the hysteresis problem of temperature and humidity control, especially the compressor is used for temperature and humidity reduction,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02
CPCF24F1/00F24F11/0008F24F11/30F24F11/77F24F11/89F24F2110/10F24F2110/12F24F2110/20F24F2110/22Y02B30/70
Inventor 李明
Owner 李明
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