CN202856198U - Refrigeration dehumidifier for electric cabinet - Google Patents
Refrigeration dehumidifier for electric cabinet Download PDFInfo
- Publication number
- CN202856198U CN202856198U CN 201220312694 CN201220312694U CN202856198U CN 202856198 U CN202856198 U CN 202856198U CN 201220312694 CN201220312694 CN 201220312694 CN 201220312694 U CN201220312694 U CN 201220312694U CN 202856198 U CN202856198 U CN 202856198U
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- chilling plate
- semiconductor chilling
- temperature
- electric cabinet
- humidity
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Abstract
The utility model brings forward a refrigeration dehumidifier for an electric cabinet, including a semiconductor chilling plate, an ambient temperature and humidity acquisition module, a semiconductor chilling plate hot end temperature monitoring module, a control module, a level switch module, a fan and a shell body. The shell body is provided with an air intake, an air outlet and a drain hole. The fan sucks the wet air in the electric cabinet from the air intake. After the wet air is condensed by a semiconductor chilling plate cold end heat exchanger, the wet air flows through a semiconductor chilling plate hot end heat exchanger and the control module and is discharged out of the air outlet. The semiconductor chilling plate cold end condensed water is discharged out of the drain hole. By the utilization of the characteristic that the air is easy to condense when the temperature difference is large, very low temperature is generated at the chilling plate cold end such that moisture in the air is condensed at the cold end of the semiconductor chilling plate and is discharged out of the cabinet though the drain hole. As the moisture of the wet air in the electric cabinet is discharged out of the cabinet after condensation, the humidity in the air is significantly reduced so as to fundamentally solve the common humidity problem of the electric cabinet.
Description
Technical field
The utility model relates to technical field of new energies, is specially a kind of refrigeration mode dehumidifier for electric cabinet.
Background technology
At present, the electric cabinet internal moisture removal device on the market is mainly the hot type dehumidifier, and its dehumidification function is mainly realized by improving in-cabinet temperature.But because the moisture that comprises in the higher temperature air rests in the air always, when ambient temperature reduces, larger air humidity will cause rapidly condensation.So the operating maintenance personnel often find to be equipped with the electric cabinet of hot type dehumidifier, still have serious condensation at terminal board, tank wall, cause the accidents such as flashover, short circuit.
Summary of the invention
The technical problem that solves
The technical problem that exists for solving existing hot type dehumidifier the utility model proposes a kind of refrigeration mode dehumidifier for electric cabinet.
Technical scheme
The technical solution of the utility model is:
Described a kind of refrigeration mode dehumidifier for electric cabinet is characterized in that: comprise semiconductor chilling plate, ambient temperature and humidity acquisition module, semiconductor chilling plate hot-side temperature monitoring module, control module, level switch module, fan and housing; The ambient temperature and humidity acquisition module is measured the humidity and temperature of current electric cabinet inside, and measured value is passed to control module; Semiconductor chilling plate hot-side temperature monitoring module is measured the temperature in semiconductor chilling plate hot junction, and measured value is passed to control module; Control module is according to the humidity of the current electric cabinet inside that obtains, the temperature in semiconductor chilling plate hot junction and the maximum working temperature that allows of humidity threshold value and semiconductor chilling plate hot junction that control module is set, the operating state of control semiconductor chilling plate and fan; Have air inlet, air outlet and osculum on the housing, the fan suction makes the inner humid air of electric cabinet enter from air inlet, humid air flows through semiconductor chilling plate hot end heat exchanger and control module after condensing through the semiconductor chilling plate cool end heat exchanger, is discharged by air outlet; Semiconductor chilling plate cold junction condensate is discharged from osculum.
Described a kind of refrigeration mode dehumidifier for electric cabinet is characterized in that: the ambient temperature and humidity acquisition module adopts Temperature Humidity Sensor HIH-6031 to measure the humidity and temperature of current electric cabinet inside, passes through I
2C communication sends ambient temperature and humidity to control module.
Described a kind of refrigeration mode dehumidifier for electric cabinet is characterized in that: semiconductor chilling plate hot-side temperature monitoring module adopts digital temperature sensor DS18B20 by the temperature in single line data port monitoring semiconductor chilling plate hot junction.
Described a kind of refrigeration mode dehumidifier for electric cabinet, it is characterized in that: near the housing the semiconductor chilling plate hot junction has the compensated with air hole.
Beneficial effect
The special-purpose refrigeration mode dehumidifier of a kind of electric cabinet that the utility model proposes, the refrigeration principle of utilization semiconductor chilling plate, when the two ends of giving semiconductor chilling plate powered, the cold junction temperature of semiconductor chilling plate descended, and the temperature in hot junction raises.Because the swabbing action of fan, the humid air of electric cabinet inside enters from air inlet, and at first the moisture in the humid air condenses at the cold junction of semiconductor chilling plate, and then the air after the dehumidifying flows out from air outlet at last to the hot junction heat exchange.By the Duct design of this kind, can effectively increase effect on moisture extraction.
Reasonably the design of compensated with air hole has prevented because the excess Temperature in the cooling piece hot junction that air inlet place intake deficiency causes, and has also compensated the problem of the intake deficiency of fan simultaneously.
By increasing the temperature monitoring module in semiconductor chilling plate hot junction, the temperature in Real Time Monitoring hot junction prevents because the effect on moisture extraction of the too high semiconductor chilling plate that causes of hot-side temperature of semiconductor chilling plate lost efficacy.
Description of drawings
Fig. 1: the block diagram of the refrigeration mode dehumidifier that the utility model proposes;
Fig. 2: refrigeration mode dehumidifier air channel figure.
Wherein: Switching Power Supply 1, baffle plate 2, cooling piece cool end heat exchanger 3, semiconductor chilling plate 4, cooling piece hot end heat exchanger 5, MCU main control module 6, fan 7.
Embodiment
Below in conjunction with specific embodiment the utility model is described:
With reference to accompanying drawing 1, the electric cabinet that proposes among the embodiment comprises semiconductor chilling plate, ambient temperature and humidity acquisition module, semiconductor chilling plate hot-side temperature monitoring module, control module, level switch module, fan and housing with the refrigeration mode dehumidifier.
Control module adopts the MCU main control module take STC89C52 as main control chip, by the work of Control fan and semiconductor chilling plate.The ambient temperature and humidity acquisition module adopts Temperature Humidity Sensor HIH-6031 to measure the humidity and temperature of current electric cabinet inside, passes through I
2C communication sends ambient temperature and humidity to the MCU main control module.Semiconductor chilling plate hot-side temperature monitoring module adopts digital temperature sensor DS18B20 by the temperature in single line data port monitoring semiconductor chilling plate hot junction.
Outside alternating current is respectively semiconductor chilling plate and the power supply of MCU main control module behind level switch module.Level switch module adopts Switching Power Supply, makes the AC power in the electricity consumption cabinet, exports 2 tunnel direct current 12V power supplys independently, and 1 road 12V is the semiconductor chilling plate power supply, and 1 road 12V is the power supply of MCU main control module.
The cooling piece TEC1-19709 that the semiconductor chilling plate module is selected, hot junction and the cold junction of semiconductor chilling plate are separately installed with fin, increase and extraneous heat exchange area.By the humidity of more current electric cabinet inside, temperature and default maximum working temperature, the operating state of MCU master control module controls semiconductor chilling plate and fan of allowing of humidity threshold value and semiconductor chilling plate hot junction of MCU main control module in semiconductor chilling plate hot junction.Prescribe a time limit less than the humidity cleaning door of setting when the humidity value of electric cabinet environment, semiconductor chilling plate and fan are closed; The humidity value of electricity cabinet environment is more than or equal to the humidity work thresholding of setting, and the semiconductor chilling plate hot-side temperature is when allowing working temperature less than the semiconductor chilling plate hot junction is maximum, and semiconductor chilling plate and fan are all worked, to air dewetting in the electric cabinet; When the humidity value of electric cabinet environment more than or equal to the humidity work thresholding of setting, and the semiconductor chilling plate hot-side temperature is not less than when the semiconductor chilling plate hot junction is maximum to allow working temperature, semiconductor chilling plate quits work, but fan keeps operating state, prevents because the operational failure of the overheated semiconductor chip that causes in hot junction.
Have air inlet, air outlet and osculum on the housing, fan 7 suctions make the inner humid air of electric cabinet enter dehumidifier from air inlet, baffle plate 2 prevents that humid air from upwards flowing, humid air at first passes through semiconductor chilling plate cool end heat exchanger 3, moisture condenses at cold junction in the humid air, and moisture is got rid of outside the cabinet by osculum, and the air after condensing flows through semiconductor chilling plate hot end heat exchanger and MCU main control module again, for semiconductor chilling plate hot end heat exchanger and the heat radiation of MCU main control module, discharged by air outlet at last.
In order to prevent entering that the air capacity of dehumidifier is not enough and superheating phenomenon occurs in the course of the work in the hot junction cooling piece that causes from air inlet, near the semiconductor chilling plate hot junction housing has the compensated with air hole, the compensated with air hole has increased the air capacity that enters the cooling piece hot end heat exchanger, strengthened the outside convection heat transfer intensity in semiconductor chilling plate hot junction, prevented that the semiconductor chilling plate hot junction is overheated.
The present embodiment takes full advantage of the characteristics of Air Temperature Difference easy condensation when large, produces low-down temperature at the cooling piece cold junction, makes moisture in air be condensate in the cold junction of semiconductor chilling plate, and discharges outside the case by osculum.Because discharge outside the case after the hydrogenesis of humid air in the electric cabinet, humidity significantly descends in the air.Fundamentally solved the common humidity puzzlement of electric cabinet.
Claims (4)
1. a refrigeration mode dehumidifier that is used for electric cabinet is characterized in that: comprise semiconductor chilling plate, ambient temperature and humidity acquisition module, semiconductor chilling plate hot-side temperature monitoring module, control module, level switch module, fan and housing; The ambient temperature and humidity acquisition module is measured the humidity and temperature of current electric cabinet inside, and measured value is passed to control module; Semiconductor chilling plate hot-side temperature monitoring module is measured the temperature in semiconductor chilling plate hot junction, and measured value is passed to control module; Control module is according to the humidity of the current electric cabinet inside that obtains, the temperature in semiconductor chilling plate hot junction and the maximum working temperature that allows of humidity threshold value and semiconductor chilling plate hot junction that control module is set, the operating state of control semiconductor chilling plate and fan; Have air inlet, air outlet and osculum on the housing, the fan suction makes the inner humid air of electric cabinet enter from air inlet, humid air flows through semiconductor chilling plate hot end heat exchanger and control module after condensing through the semiconductor chilling plate cool end heat exchanger, is discharged by air outlet; Semiconductor chilling plate cold junction condensate is discharged from osculum.
2. described a kind of refrigeration mode dehumidifier for electric cabinet according to claim 1, it is characterized in that: the ambient temperature and humidity acquisition module adopts Temperature Humidity Sensor HIH-6031 to measure the humidity and temperature of current electric cabinet inside, passes through I
2C communication sends ambient temperature and humidity to control module.
3. described a kind of refrigeration mode dehumidifier for electric cabinet according to claim 1 and 2, it is characterized in that: semiconductor chilling plate hot-side temperature monitoring module adopts digital temperature sensor DS18B20 by the temperature in single line data port monitoring semiconductor chilling plate hot junction.
4. described a kind of refrigeration mode dehumidifier for electric cabinet according to claim 3, it is characterized in that: near the housing the semiconductor chilling plate hot junction has the compensated with air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220312694 CN202856198U (en) | 2012-06-29 | 2012-06-29 | Refrigeration dehumidifier for electric cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220312694 CN202856198U (en) | 2012-06-29 | 2012-06-29 | Refrigeration dehumidifier for electric cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856198U true CN202856198U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220312694 Expired - Fee Related CN202856198U (en) | 2012-06-29 | 2012-06-29 | Refrigeration dehumidifier for electric cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856198U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738718A (en) * | 2012-06-29 | 2012-10-17 | 西北工业大学 | Cooling type dehumidifier for electric cabinet |
| CN106287956A (en) * | 2016-08-11 | 2017-01-04 | 合肥通用电源设备有限公司 | A kind of novel air dehumidification control system |
| CN107887824A (en) * | 2017-12-15 | 2018-04-06 | 国网冀北电力有限公司唐山供电公司 | A kind of terminal box intelligence convection current wind heating and dehumidification integrated system and method |
-
2012
- 2012-06-29 CN CN 201220312694 patent/CN202856198U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738718A (en) * | 2012-06-29 | 2012-10-17 | 西北工业大学 | Cooling type dehumidifier for electric cabinet |
| CN106287956A (en) * | 2016-08-11 | 2017-01-04 | 合肥通用电源设备有限公司 | A kind of novel air dehumidification control system |
| CN107887824A (en) * | 2017-12-15 | 2018-04-06 | 国网冀北电力有限公司唐山供电公司 | A kind of terminal box intelligence convection current wind heating and dehumidification integrated system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |