CN104538866A - Anti-condensation device with self-adaptation control and control method - Google Patents
Anti-condensation device with self-adaptation control and control method Download PDFInfo
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- CN104538866A CN104538866A CN201410788608.5A CN201410788608A CN104538866A CN 104538866 A CN104538866 A CN 104538866A CN 201410788608 A CN201410788608 A CN 201410788608A CN 104538866 A CN104538866 A CN 104538866A
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- condensation
- temperature
- control unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an anti-condensation device with self-adaptation control and a control method. The anti-condensation device with self-adaptation control and the control method comprise a temperature and humidity sensor which is used for detecting the environmental temperature and humidity, an electronic condensation component which is used for condensation dehumidification, a temperature sensor which is used for detecting the temperature of a condensation end, a temperature sensor which is used for detecting the temperature of a heat dissipation end, and a central control unit which is used for controlling the electronic condensation component. The electronic condensation component comprises the condensation end, the heat dissipation end, an electronic refrigeration element and a heat dissipation fan. The central control unit is provided with a firmware program. The central control unit is characterized in that the central control unit can monitor the environmental temperature and humidity sensor when the anti-condensation device is in the dehumidification mode, and search in a 'dew point temperature table' according to the obtained environmental temperature and humidity values to obtain the corresponding dew point temperature value; meanwhile, comparison between the temperature value of the condensation end and the temperature value of a dew point is conducted to drive the start-up and shut-down of the electronic refrigeration element. Therefore, the power consumption can be decreased, and the dehumidifying effect can be optimized under different circumstances.
Description
Technical field
The present invention relates to temperature and humidity control device, especially the Temperature and Humidity Control field of electric power cabinet.
Background technology
Electric power bin refers to that, in power industry, inside is provided with controller switching equipment, or other electric equipment, bin internal environment has certain requirement to temperature, humidity, temperature, the humidity of air will control below certain numerical value, under usual state, will install dehumidifying temperature regulating device in bin.
At present, power industry mainly adopts the relative humidity in electrical heating method control bin---and namely by adding hot-air, making hot-air have higher saturated steam partial pressure, thus relative air humidity is reduced.But the steam in air still exists in bin, when heating stopping or ambient temperature declines more, the steam in air reaches capacity, and forms condensation, condenses upon equipment surface.Therefore, in actual motion, often find in the bin installing hot type dehumidifier, still there will be serious dew condensation phenomenon, the normal operation of harm electric equipment; Meanwhile, hot type dehumidifier mainly relies on electric energy to heat, and needs the power resource of at substantial, and the cost that dries is high.
For above-mentioned situation, increasing manufacturer successively develops the anti-condensation system based on electronics dehumidification by condensation at present, but it is to internal core segment---the control mode of cooling assembly is single, major part manufacturer only environmentally the contrast of humidity and humidity threshold values control its start and stop work, this single control mode cannot solve the problem of low temperature and high relative humidity---when low temperature and high relative humidity, easily in the cold junction place frosting of consecutive low temperature, even can block air channel time serious, affect effect on moisture extraction.Meanwhile, under different environmental conditions, electronic condenser continuous firing, cold junction temperature is down to minimum all the time, because the refrigerating efficiency of electronics condensation is not high, therefore also inevitably causes the waste of the energy, but also does not have good effect on moisture extraction.
Summary of the invention
For reaching goal of the invention, the technical solution used in the present invention is as follows:
A condensation-preventing device for adaptive control, comprises shell and the electronic type condensation of installing therein and central control unit.Described shell is divided into two chambers by dividing plate, and outer casing bottom is provided with lower cover.All porose on the housing of the top of radiating end, below and the top of condensation end and the top of central control unit, wherein, the top of the top of radiating end, below and condensation end is air inlet, and fan place is air outlet, and the hole above central control unit is the heat transmission of central control unit.
Described electronic type condensation comprises electronic refrigerating elements, condensation end, radiating end and radiator fan, realizes dehumidification by condensation for the formation of the solidifying water surface.Described condensation end is provided with condensation end temperature sensor, and radiating end is provided with radiating end temperature sensor, and environment humidity sensor is arranged on enclosure; Described condensation end temperature sensor, radiating end temperature sensor, environment humidity sensor, electronic refrigerating elements and fan are all connected on the corresponding interface of central control unit.
Described electronic refrigerating elements has huyashi-chuuka (cold chinese-style noodles) and hot side, and huyashi-chuuka (cold chinese-style noodles) is adjacent at condensation end, and hot side is adjacent at radiating end; Described central control unit carries out on off control to electronic refrigerating elements.During startup, coldface temperature declines, hot-face temperature rises, in order to ensure good effect on moisture extraction, condensation end temperature everywhere should be made to control below dew point temperature, and therefore condensation end temperature sensor is placed on condensation end upper end position place, because condensation end upper part is higher relative to other part temperature of condensation end, as long as therefore temperature herein can be controlled below dew point temperature, just can guarantee that the temperature of condensation end all sites is all below dew point temperature.
Caused by electronic refrigerating elements self character, its efficiency of heating surface is larger than refrigerating efficiency, therefore larger than condensation end about 1 times of radiating end area, the heat of hot side can be distributed as early as possible, only have and the temperature of hot side is controlled, be unlikely to higher than ambient temperature too many, just can guarantee that the temperature of huyashi-chuuka (cold chinese-style noodles) lowers.
Described radiator fan is arranged on radiating end front; For the temperature of radiating end is distributed.
The position that shown in must publishing picture according to test of many times, radiating end temperature sensor is put is the maximum temperature of radiating end, the maximum temperature of attention radiating end is not radiating end center, because the wind-force of radiating end center position fan is also maximum, therefore also larger to radiating effect herein.Therefore, as long as control to closest to ambient temperature by the temperature of radiating end temperature sensor installation place, just can guarantee that the temperature of condensation end drops to below dew point temperature with the highest efficiency.
In order to prevent the relative low temperature of condensation end and the relatively-high temperature of radiating end in electronic type condensation, the electronic devices and components in central control unit and environment humidity sensor are impacted, therefore structure adopts mode that is relatively independent and isolation to process, by dividing plate, condensation end, radiating end and central control unit are separated.
A Temperature Humidity Sensor is installed in the place pressing close to shell lower cover below central control unit, for the warm and humid angle value of monitoring of environmental.Environment humidity sensor is arranged on herein, and main cause is 2 points: 1. more close to shell, more can close to environment value; 2. being arranged on shell lower cover instead of other places, is that lower cover place is dust stratification least easily, so just can guarantee the precision of the humiture numerical value that environment humidity sensor records after long-play because equipment is after long-time running.
A kind of condensation-preventing device control method of adaptive control is as follows:
Control logic 1. judges that anti-condensation system is the need of entering dehumidification mode, if without the need to dehumidifying, this controls quitting work of electronic refrigerating elements, and the fan wind speed that progressively slows down is until stop.
Control logic 2. is when anti-condensation system is under pressure dehumidifying mode of operation, or under automatic dehumidifying mode of operation and ambient humidity exceedes set humidity threshold values, state when anti-condensation system enters dehumidifying, monitoring of environmental Temperature Humidity Sensor, and according to ambient temperature and humidity value inquiry " dew-point hygrometer " obtained, and then obtain corresponding dew point temperature value, simultaneously, contrast according to the temperature value of condensation end and dew point temperature value, and then drive the start and stop of electronic refrigerating elements.
The temperature value of control logic 3. monitoring of environmental temperature and radiating end, and both are contrasted, and then adjustment heat radiation, the wind speed of fan, the start and stop of control radiator fan.
The invention has the beneficial effects as follows that it the working method of concrete humiture environmental condition to device internal electrical minor condensation residing for device can carry out Automatic adjusument, environmentally humiture can regulate the temperature of condensation end, under the prerequisite guaranteeing moisture removal and effect on moisture extraction, reduce the power consumption of product.Meanwhile, the temperature due to condensation end obtains effective monitoring and regulates, and easily blocks up the problem of air channel, effect on moisture extraction difference under therefore it also avoid low temperature and high relative humidity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is element interface schematic diagram of the present invention.
Fig. 3 is dew-point hygrometer.
Fig. 4 is humidity correlation curve.In figure, the anti-condensation system dehumidification effect that line 1-employing usual manner realizes, the effect on moisture extraction of the anti-condensation system that line 2 and line 3-employing adaptive control mode realize.
Wherein, 1-electronic refrigerating elements; 2-condensation end temperature sensor; 3-condensation end; 4-central control unit and firmware; 5-radiating end temperature sensor; 6-radiating end; 7-fan; 8-environment humidity sensor.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.One skilled in the art should appreciate that following embodiment is only not used in for illustration of the present invention to limit the scope of the invention.
The model of the electric component adopted in the present embodiment:
The digital calibration-free Temperature Humidity Sensor of environment humidity sensor: SI7005
Condensation end temperature sensor, radiating end temperature sensor: NTC thermo-sensitive resistor
Electronic refrigerating elements: TE12705
Central control unit main control chip: C8051F3xx Series MCU
As shown in Figure 1, a kind of condensation-preventing device of adaptive control, comprises shell and the electronic type condensation of installing therein and central control unit.Described shell is divided into two chambers by dividing plate, and outer casing bottom is provided with lower cover.All porose on the housing of the top of radiating end, below and the top of condensation end and the top of central control unit, wherein, the top of the top of radiating end, below and condensation end is air inlet, and fan place is air outlet, and the hole above central control unit is the heat transmission of central control unit.
Described electronic type condensation comprises electronic refrigerating elements, condensation end, radiating end and radiator fan, realizes dehumidification by condensation for the formation of the solidifying water surface.Described condensation end is provided with condensation end temperature sensor, and radiating end is provided with radiating end temperature sensor, and environment humidity sensor is arranged on enclosure; As shown in Figure 2, described condensation end temperature sensor, radiating end temperature sensor, environment humidity sensor, electronic refrigerating elements and fan are all connected on the corresponding interface of central control unit.
Described electronic refrigerating elements has huyashi-chuuka (cold chinese-style noodles) and hot side, and huyashi-chuuka (cold chinese-style noodles) is adjacent at condensation end, and hot side is adjacent at radiating end; Described central control unit carries out on off control to electronic refrigerating elements.During startup, coldface temperature declines, hot-face temperature rises, in order to ensure good effect on moisture extraction, condensation end temperature everywhere should be made to control below dew point temperature, and therefore condensation end temperature sensor is placed on condensation end upper end position place, because condensation end upper part is higher relative to other part temperature of condensation end, as long as therefore temperature herein can be controlled below dew point temperature, just can guarantee that the temperature of condensation end all sites is all below dew point temperature.
Caused by electronic refrigerating elements self character, its efficiency of heating surface is larger than refrigerating efficiency, therefore larger than condensation end area about 1 times of radiating end area, the heat of hot side can be distributed as early as possible, only have and the temperature of hot side is controlled, be unlikely to higher than ambient temperature too many, just can guarantee that the temperature of huyashi-chuuka (cold chinese-style noodles) lowers.
Described radiator fan is arranged on radiating end front; For the temperature of radiating end is distributed.
And the position that shown in must publishing picture according to test of many times, radiating end temperature sensor is put is the maximum temperature of radiating end, the maximum temperature of attention radiating end is not radiating end center, because the wind-force of radiating end center position fan is also maximum, therefore also larger to radiating effect herein.Therefore, as long as control to closest to ambient temperature by the temperature of radiating end temperature sensor installation place, just can guarantee that the temperature of condensation end drops to below dew point temperature with the highest efficiency.
In order to prevent the relative low temperature of condensation end and the relatively-high temperature of radiating end in electronic type condensation, the electronic devices and components in central control unit and environment humidity sensor are impacted, therefore structure adopts mode that is relatively independent and isolation to process, by dividing plate, condensation end, radiating end and central control unit are separated.
A Temperature Humidity Sensor is installed in the place pressing close to shell lower cover below central control unit, for the warm and humid angle value of monitoring of environmental.
The condensation-preventing device control method of adaptive control is as follows:
Control logic 1: (A. forces dehumidifying mode of operation the need of entering dehumidification mode to judge anti-condensation system; B. under automatic dehumidifying mode of operation and ambient humidity Hh exceedes set humidity threshold values HF), if without the need to dehumidifying, this controls quitting work of electronic refrigerating elements and (notes: setting-up time parametric t L1 herein, for electronic refrigerating elements start and stop time delay, in order to avoid frequent start-stop impacts to electronic refrigerating elements useful life), and progressively slow down fan wind speed until stop according to " control logic 3 ".
Control logic 2: when anti-condensation system needs dehumidifying (under forcing dehumidifying mode of operation, or under automatic dehumidifying mode of operation and ambient humidity Hh exceedes set humidity threshold values HF), central control unit monitoring of environmental Temperature Humidity Sensor, and according to the ambient temperature and humidity value Th obtained, " dew-point hygrometer " in Hh query graph 2, and then obtain corresponding dew point temperature value TL, simultaneously, contrast according to the temperature value TN of condensation end and dew point temperature value TL, if TN≤TL-TD1(wherein, TD1 is return difference controlling value under dew point temperature), then illustrate that condensation end temperature reaches below dew point temperature, then make quitting work of electronic refrigerating elements, if TN go up to TL-TU1(wherein, TU1 is return difference controlling value in dew point temperature), then make electronic refrigerating elements startup work.Meanwhile, setting-up time parametric t L1, for electronic refrigerating elements start and stop time delay, in order to avoid frequent start-stop impacts to electronic refrigerating elements useful life.
Control logic 3: no matter anti-condensation system is the need of dehumidifying, all the time the temperature value TR of monitoring of environmental temperature Th and radiating end, and both are contrasted, if TR >=Th+ TU2(wherein, TU2 is the upper return difference controlling value of heat radiation), then illustrate that radiating end is overheated, continues air discharging and radiating, then start radiator fan work; If TR falling-rising to Th+ TD2(wherein, TD2 is the lower return difference controlling value of heat radiation), then make radiator fan wind speed reduce gradually until stop.Meanwhile, setting-up time parametric t L2, for fan start and stop time delay, in order to avoid frequent start-stop impacts to fan useful life.
For verifying the actual motion effect of this device, elitely get three terminal boxs, this anti-condensation system is installed in two wherein, in another, anti-condensation system is not installed, by installing the humidity value data in humiture recorder acquisition case in these three terminal boxs additional, and then the humidity situation of change compared in three casees, specifically as shown in Figure 3, figure center line 2 and line 3 correspondence are provided with anti-condensation system; Line 1 correspondence is unkitted anti-condensation system.
As seen from the figure, do not install in the case of anti-condensation system, humidity mean value is about 60%RH, and maximum is 77%RH nearly; And install in the case of anti-condensation system, humidity mean value is about 40%RH, and maximum is only 55%RH.
To sum up, adopt the anti-condensation system of adaptive control mode than adopting the anti-condensation system of conventional control mode and reduce 20%RH nearly, the requirement that electrical equipment rack humidity is no more than 75%RH can be met.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic combination in any.
Claims (10)
1. the condensation-preventing device of an adaptive control, comprise shell and the electronic type condensation of installing therein and central control unit, radiating end temperature sensor, environment humidity sensor, it is characterized in that: described electronic type condensation comprises electronic refrigerating elements, condensation end, radiating end and radiator fan, described electronic refrigerating elements has huyashi-chuuka (cold chinese-style noodles) and hot side, and huyashi-chuuka (cold chinese-style noodles) is adjacent at condensation end, and hot side is adjacent at radiating end; Radiator fan is arranged on radiating end front; Described condensation end is provided with condensation end temperature sensor, and radiating end is provided with radiating end temperature sensor, and environment humidity sensor is arranged on enclosure; Described condensation end temperature sensor, radiating end temperature sensor, environment humidity sensor, electronic refrigerating elements and fan are all connected on the corresponding interface of central control unit, described condensation end, are provided with dividing plate between radiating end and described central control unit.
2. the anti-condensation system of a kind of adaptive control according to claim 1, is characterized in that: described shell is divided into two chambers by dividing plate, and outer casing bottom is provided with lower cover, and shell is provided with through hole as air channel.
3. the condensation-preventing device of a kind of adaptive control according to claim 1, is characterized in that: described condensation end temperature sensor is placed on described condensation end upper end position place.
4. the condensation-preventing device of a kind of adaptive control according to claim 1, is characterized in that: described Temperature Humidity Sensor is arranged on bottom central control unit and presses close to the position of described shell lower cover.
5. the condensation-preventing device of a kind of adaptive control according to claim 1, is characterized in that: large 1 times of the area of condensation end described in the area ratio of described radiating end.
6. the condensation-preventing device of a kind of adaptive control according to claim 1, is characterized in that: described radiating end temperature sensor is arranged on the maximum temperature position of described radiating end.
7. the control method of the condensation-preventing device of a kind of adaptive control according to claim 1, it is characterized in that when anti-condensation system enters except wet condition, central control unit can monitoring of environmental Temperature Humidity Sensor, and according to ambient temperature and humidity value inquiry " dew-point hygrometer " obtained, and then obtain corresponding dew point temperature value,, contrast according to the temperature value of condensation end and dew point temperature value meanwhile, and then drive the start and stop of electronic refrigerating elements.
8. the control method of the condensation-preventing device of a kind of adaptive control according to claim 1, it is characterized in that under pressure dehumidifying mode of operation, or under automatic dehumidifying mode of operation and ambient humidity exceedes set humidity threshold values, anti-condensation system enters except wet condition.
9. the control method of the condensation-preventing device of a kind of adaptive control according to claim 1, it is characterized in that central control unit can judge that anti-condensation system is the need of entering dehumidification mode, if without the need to dehumidifying, then control quitting work of electronic refrigerating elements, and the fan wind speed that progressively slows down is until stop.
10. the control method of the condensation-preventing device of a kind of adaptive control according to claim 1, it is characterized in that central control unit can the temperature value of monitoring of environmental temperature and radiating end, and both contrasted, and then adjust the wind speed of radiator fan, the start and stop of control radiator fan.
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| CN201410788608.5A CN104538866A (en) | 2014-12-18 | 2014-12-18 | Anti-condensation device with self-adaptation control and control method |
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Cited By (7)
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|---|---|---|---|---|
| CN105807823A (en) * | 2016-04-15 | 2016-07-27 | 玖誉科技有限公司 | Electronic-cooling-slice control system and circuit |
| CN106731532A (en) * | 2016-11-15 | 2017-05-31 | 北京无线电测量研究所 | A kind of Intelligent dehumidifying device and method |
| CN109451704A (en) * | 2018-11-05 | 2019-03-08 | 辽宁中天智控技术有限公司 | A kind of cabinet dewing-proof method and its device |
| WO2019109649A1 (en) * | 2017-12-08 | 2019-06-13 | 东莞市升微机电设备科技有限公司 | Electronic cooling anti-condensation system, and anti-condensation method for same |
| CN112461994A (en) * | 2020-11-03 | 2021-03-09 | 广西电网有限责任公司电力科学研究院 | Multifunctional gas integrated sensor |
| CN112596563A (en) * | 2020-12-02 | 2021-04-02 | 国网上海能源互联网研究院有限公司 | Method and system for self-adaptive control of air insulation gas-filled cabinet |
| CN114552149A (en) * | 2020-11-25 | 2022-05-27 | 郑州宇通客车股份有限公司 | Battery box and battery box dehumidification method |
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| CN112461994A (en) * | 2020-11-03 | 2021-03-09 | 广西电网有限责任公司电力科学研究院 | Multifunctional gas integrated sensor |
| CN114552149A (en) * | 2020-11-25 | 2022-05-27 | 郑州宇通客车股份有限公司 | Battery box and battery box dehumidification method |
| CN114552149B (en) * | 2020-11-25 | 2023-08-18 | 宇通客车股份有限公司 | Battery box and battery box dehumidification method |
| CN112596563A (en) * | 2020-12-02 | 2021-04-02 | 国网上海能源互联网研究院有限公司 | Method and system for self-adaptive control of air insulation gas-filled cabinet |
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Application publication date: 20150422 |
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| RJ01 | Rejection of invention patent application after publication |