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Cooling type dehumidifier for electric cabinet

A refrigeration type, dehumidifier technology, applied in the direction of substation/switchgear cooling/ventilation, etc., to prevent failure and increase the effect of dehumidification

Inactive Publication Date: 2012-10-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems existing in the existing heating dehumidifier, the present invention proposes a cooling dehumidifier for electric cabinets

Method used

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  • Cooling type dehumidifier for electric cabinet

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Embodiment Construction

[0018] Describe the present invention below in conjunction with specific embodiment:

[0019] Refer to attached figure 1 , The refrigeration type dehumidifier for electric cabinet proposed in the embodiment includes a semiconductor cooling chip, an ambient temperature and humidity acquisition module, a semiconductor cooling chip hot end temperature monitoring module, a control module, a level conversion module, a fan and a casing.

[0020] The control module adopts the MCU main control module with STC89C52 as the main control chip, and controls the work of the electric fan and the semiconductor cooling chip through the relay. The ambient temperature and humidity acquisition module uses the temperature and humidity sensor HIH-6031 to measure the current humidity and temperature inside the electric cabinet, and transmits the ambient temperature and humidity to the MCU main control module through I2C communication. The temperature monitoring module of the hot end of the semicond...

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Abstract

The invention provides a cooling type dehumidifier for an electric cabinet, which comprises a semiconductor cooling plate, an environmental temperature and humidity acquisition module, a hot-end temperature monitoring module for the semiconductor cooling plate, a control module, a level conversion module, a fan and a shell; and the control module is used for controlling the working states of the semiconductor cooling plate and the fan according to the current temperature in the electric cabinet obtained via a sensor, the temperature of the hot end of the semiconductor cooling plate, the humidity threshold set in the control module and the maximum allowable working temperature of the hot end of the semiconductor cooling plate. By adopting the characteristic of easy condensation under large air temperature differences, very low temperature can be achieved at the cold end of the cooling plate, and moisture in air can be condensed at the cold end of the semiconductor cooling plate and discharged out of the box through a water discharging hole. Since the moisture in humid air in the electric cabinet can be condensed and discharged out of the box, the humidity of air can be reduced significantly, and the common humidity problem of the electric cabinet can be solved fundamentally.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a refrigeration type dehumidifier used in electric cabinets. Background technique [0002] At present, the dehumidifiers inside electric cabinets on the market are mainly heating dehumidifiers, and their dehumidification function is mainly realized by increasing the temperature inside the cabinet. However, since the moisture contained in the air at a higher temperature stays in the air all the time, when the ambient temperature drops, the greater air humidity will quickly lead to condensation. Therefore, the operation and maintenance personnel often find that there is still serious condensation on the terminal block and box wall of the electric cabinet installed with the heating dehumidifier, which leads to accidents such as flashover and short circuit. Contents of the invention [0003] technical problem to be solved [0004] In order to solve the technical problems exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/56
Inventor 李代金秦侃宋博义李旺罗凯
Owner NORTHWESTERN POLYTECHNICAL UNIV
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