Control method and control device for preventing frosting of refrigeration unit in condensation dehumidification device

A refrigeration unit and control device technology, which is applied in the cooling/ventilation of substation/switchgear, panel/switch station circuit device, substation/power distribution device shell, etc., which can solve the impact of the normal operation of the dehumidification device and the safe operation of the power box Hidden dangers and other problems to achieve the effect of ensuring reliability and reducing humidity

Inactive Publication Date: 2019-01-29
SHANDONG ZHIYANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the condensation dehumidification continues, the frost gradually condenses to form ice cubes, which will greatly affect the normal operation of the dehumidification device and bring hidden dangers to the safe operation of the power box.
How to avoid the formation of frost and ice, there has been no effective solution

Method used

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  • Control method and control device for preventing frosting of refrigeration unit in condensation dehumidification device
  • Control method and control device for preventing frosting of refrigeration unit in condensation dehumidification device
  • Control method and control device for preventing frosting of refrigeration unit in condensation dehumidification device

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Embodiment Construction

[0044] combined with Figures 1 to 8 The specific embodiment of the present invention is described further:

[0045] A control method for preventing frosting of a refrigerating unit in a condensation dehumidification device, comprising the following steps which are executed sequentially and cyclically:

[0046] (1) The control unit detects the ambient humidity in real time:

[0047] The ambient humidity is detected by the control unit in real time. If the ambient humidity is confirmed multiple times and exceeds the upper limit (for example, set to 75% RH), enter the next step;

[0048] (2) Start the fan of the cooling unit:

[0049] The control unit sends out a signal to start the fan of the heat dissipation unit, and the control unit judges the fan speed through the feedback detection circuit of the fan;

[0050] The fan is under the rated voltage and the rated speed is 3000r / min. If the speed is too low (less than 60% of the normal speed), it is considered that the fan is...

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Abstract

The invention discloses a control method and control device for preventing frosting of a refrigeration unit in a condensation dehumidification device. The control device comprises a semiconductor refrigeration unit, a temperature and humidity detection unit, a heat dissipation unit and a control unit, wherein the semiconductor refrigeration unit, the temperature and humidity detection unit, the heat dissipation unit and the control unit are all provided with mutually cooperated control programs. The control method comprises the steps sequentially executed in a circulatory manner that the control unit detects the environmental humidity in real time, a fan of the heat dissipation unit is started, the semiconductor refrigeration unit is started, and the control is carried out for preventing the frosting of the refrigeration unit. The control method and the control device can avoid freezing of the condensation dehumidification device, enable the humidification efficiency to be relatively improved and ensure the working reliability of equipment inside an electric power box.

Description

technical field [0001] The invention relates to the technical field of comprehensive management of the micro-environment of a power box, in particular to a control method and a control device for preventing frosting of a refrigeration unit in a condensation dehumidification device. Background technique [0002] Power system switch cabinets, ring network cabinets, central control cabinets, operating mechanism boxes, terminal boxes and other power boxes are easily affected by weather such as seasons, rain, snow, high temperature and high humidity, and there are phenomena such as damp, excessive humidity, and condensation. It will cause equipment insulation drop and electrical flashover, and even cause safety accidents in severe cases. In order to reduce the relative humidity of the air in the box, condensation dehumidification devices are generally installed in the power box. At present, the mainstream dehumidification method is the semiconductor condensation dehumidification m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/24H02B1/56H02B1/28
CPCH02B1/24H02B1/28H02B1/565
Inventor 张万征刘国永杨蓬许克
Owner SHANDONG ZHIYANG ELECTRIC
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