CN110645645A - Control method of anti-condensation dehumidifying device - Google Patents
Control method of anti-condensation dehumidifying device Download PDFInfo
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- CN110645645A CN110645645A CN201910857408.3A CN201910857408A CN110645645A CN 110645645 A CN110645645 A CN 110645645A CN 201910857408 A CN201910857408 A CN 201910857408A CN 110645645 A CN110645645 A CN 110645645A
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- fan
- evaporator
- dehumidification device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to a control method of an anti-condensation dehumidifying device, which comprises the following steps: step one, detecting the current environment humidity, starting a fan to operate when the detected humidity value is greater than a set value, and then delaying to start a compressor to operate; step two, detecting the temperature T1 of the air condensed by the evaporator, and comparing the value of T1 with the set temperature T2; thirdly, adjusting the rotating speed of the fan according to the comparison result of T1 and T2; if T1 is greater than T2, the fan speed is reduced to reduce the speed of air flow through the evaporator; if T1 is less than T2, the fan speed is increased to increase the air flow through the evaporator. The control method of the invention enables the evaporator and the fan to achieve the optimal matching state, improves the utilization efficiency of the evaporator, achieves the energy-saving effect, and has simple control logic and low use cost.
Description
Technical Field
The invention relates to the field of dehumidification devices, in particular to a control method of an anti-condensation dehumidification device.
Background
Due to low position and poor air circulation, the underground garage is easy to damp and dew, so that articles in the underground garage are easy to mildew, and the wall skin is easy to fall off. Dehumidification equipment is installed in newly-built underground garages in many cities at present to improve the moist problem of underground garages, the dehumidifier on the market at present generally adopts manual control, when garage humidity is big, the work dehumidification of manual start dehumidification equipment, its work efficiency is relatively low, some dehumidifier of new models have increased the automatic control function, it generally can control compressor, fan simultaneously, its control system is relatively complicated, the cost is higher, and there is the fan rotational speed too fast sometimes, lead to the air not fully condensed and just passed the evaporimeter, or the fan rotational speed is too slow, lead to the air after the evaporimeter temperature low, the work efficiency of evaporimeter has been reduced.
The invention is therefore set forth in this light.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a control method of a dewing prevention and dehumidification device, which can enable an evaporator and a fan to achieve the optimal matching state.
In order to realize the purpose, the invention adopts the following technical scheme:
a control method of a dewing prevention dehumidification device comprises the following steps:
step one, detecting the current environment humidity, starting a fan to operate when the detected humidity value is greater than a set value, and then delaying to start a compressor to operate;
step two, detecting the temperature T1 of the air condensed by the evaporator, and comparing the value of T1 with the set temperature T2;
thirdly, adjusting the rotating speed of the fan according to the comparison result of T1 and T2;
if T1 is greater than T2, the fan speed is reduced to reduce the speed of air flow through the evaporator;
if T1 is less than T2, the fan speed is increased to increase the air flow through the evaporator.
Further, the set temperature T2 is close to or equal to the ambient dew point temperature, and the value range of T2 is 5-15 ℃.
Further, in the first step, the compressor is started to operate after the fan is started to operate for at least 2 min.
Further, the minimum rotating speed of the fan is not lower than 500 r/min.
Further, in the second step, the detection frequency of the air temperature T1 is at least once per minute.
Further, the fan in the third step is a direct current fan, and the regulation mode of the rotating speed of the fan adopts PID regulation.
Further, in the third step, when T1 is greater than T2, the larger the difference between the two is, the lower the fan speed is; when T1 is less than T2, the larger the difference between the two, the faster the fan speed.
Further, the first step further comprises the step of starting the fan to run to ventilate when the detected humidity value is close to the set value.
Further, the compressor is operated at a constant power after being started.
After the technical scheme of the invention is adopted, the following beneficial effects are brought:
after the dehumidification device is controlled to be started by the method, the control system only adjusts the rotating speed of the fan to control the speed of air flowing through the evaporator, so that moisture in the air can be fully condensed, but the temperature of the air cannot be reduced too low, the evaporator and the fan reach the optimal matching state, the utilization efficiency of the evaporator is improved, and the energy-saving effect is achieved.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1: the invention relates to a structure diagram of a dew condensation prevention dehumidification device;
FIG. 2: a rear view of the dew condensation preventing dehumidifying device according to the present invention;
FIG. 3: a right side view of the dew condensation preventing dehumidifying apparatus according to the present invention;
FIG. 4: is a cross-sectional view taken along plane a-a of fig. 3;
FIG. 5: is a partial enlarged view of Y of fig. 4;
FIG. 6: the invention relates to a plan view of an anti-condensation dehumidifying device with a part of structure removed;
FIG. 7: the invention relates to a perspective view of an anti-condensation dehumidifying device with partial structure removed;
FIG. 8: the invention relates to a running area curve chart of an anti-condensation dehumidifying device;
FIG. 9: a control flow diagram of the present invention;
wherein: 1. the device comprises a frame 2, a filter 3, a dehumidification module 4, a fan 5, a control system 6, a partition plate 7, a flow guide cover 8, a cross beam 9 and a mounting bracket;
11. the main cabinet 12, the pressure equalizing box 11a, the air inlet chamber 11b, the air inlet 11c, the access door 11d, the chute 12a, the air outlet chamber 12b, the air outlet 31, the evaporator 32, the condenser 33, the compressor 34, the water collecting box 35, the drain pipe 36 and the medium circulation pipeline.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parameters or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
It should be further understood by those skilled in the art that the terms "upper", "lower", "front", "rear", "left", "right", and the like used in the embodiments of the present invention to indicate the orientation or the positional relationship are based on the actual use state of the dehumidification device, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 7, arrows in the drawings represent the direction of airflow when the dewing prevention and dehumidification device according to the present invention is operated.
An anti-dewing and dehumidifying device comprises a frame 1, a filter 2, a dehumidifying module 3, a fan 4 and a control system 5.
An air inlet cavity 11a and an air outlet cavity 12a are formed in the frame 1, a partition plate 6 is arranged between the air inlet cavity 11a and the air outlet cavity 12a, a ventilation opening is formed in the partition plate 6, and the air inlet cavity 11a and the air outlet cavity 12a are communicated through the ventilation opening. An air inlet 11b is formed in one side of the air inlet chamber 11a, and outside air can enter the air inlet chamber 11a through the air inlet 11 b; the filter 2 is arranged at the upstream of the dehumidification module 3 along the air inlet direction, and the air entering the air inlet chamber 11a is filtered by the filter 2 and then enters the dehumidification module 3 for dehumidification.
An air outlet 12b is formed in one side of the air outlet cavity 12a, the fan 4 is installed in the air outlet cavity 12a and connected with the ventilation opening of the partition plate 6, the fan 4 is fixed in the air outlet cavity 12a through a mounting bracket 9, and the fan 4 is configured to enable air in the air inlet cavity 11a to move towards the air outlet cavity 12 a. Outside air firstly enters the air inlet chamber 11a through the air inlet 11b, then is filtered by the filter 2 in the air inlet chamber 11a, is dehumidified by the dehumidifying module 3, then enters the air outlet chamber 12a, and is discharged from the air outlet 12b of the air outlet chamber 12 a.
Specifically, the dehumidification module 3 includes an evaporator 31, a condenser 32, a compressor 33 connected to the evaporator 31 and the condenser 32 through a medium circulation line 36, and a water collection box 34 and a drain pipe 35 disposed below the condenser 32; the drain pipe 35 is connected to the bottom of the sump case 34. The evaporator 31, the condenser 32, and the compressor 33 are sequentially arranged along an air intake direction.
The control system 5 comprises an environment temperature and humidity sensor, a unit temperature and humidity sensor, a controller and a communication module, wherein the environment temperature and humidity sensor is used for detecting the temperature and the humidity of an external environment, and the unit temperature and humidity sensor is arranged on one side of air outlet of the evaporator and keeps a distance of 3-15mm from the evaporator. The controller is connected with the fan 4 and the compressor 33 through the communication module and controls the operation of the fan 4 and the compressor 33, and the environment temperature and humidity sensor and the unit temperature and humidity sensor are connected with the controller.
Preferably, the rack 1 includes a main cabinet 11 and a pressure equalizing box 12, the air inlet chamber 11a is formed in the main cabinet 11, the air outlet chamber 12a is formed in the pressure equalizing box 12, the main cabinet 11 and the pressure equalizing box 12 are composed of a rigid frame and a metal plate, and except the air inlet 11b and the air outlet 12b, the rest positions are closed structures.
The partition plate 6 is installed between the main cabinet 11 and the equalizing box 12, and preferably, the partition plate 6 is directly fixed on the equalizing box 12 and is connected with the main cabinet 11 together with the equalizing box 12.
The main cabinet 11 and the pressure equalizing box 12 are detachably connected, and can be detached for transportation and then assembled during use.
Preferably, the main cabinet 11 and the surge tank 12 are bolted.
Preferably, at least one side of the main cabinet 11 is further provided with an access door 11c for opening the air intake chamber 11a to facilitate maintenance of the evaporator 31 and the condenser 32. The upper end and the left and right sides of evaporimeter 31 and condenser 32 are equipped with the bounding wall respectively for the air that flows along the direction that runs through evaporimeter 31 and condenser 32, is equipped with a spout 11d in the front side of air inlet cavity 11a, just spout 11d is for opening the mouth towards one side of access door 11c, filter 2 and spout 11d sliding fit open access door 11 c. The filter 2 can be removed and replaced.
Preferably, the filter 2 is an air screen.
Preferably, the cross-sectional area of air-out cavity 12a increases gradually along the air-out direction, air outlet 12b is a plurality of to be located the one side that the case 12 kept away from main cabinet 11 of pressure equalizing, air-out cavity 12a plays the effect of even wind pressure, makes every air outlet 12 b's air-out pressure approximate mutually, and air outlet 12b adopts the direction adjustable air-out structure, air intake 11b is located one side that the case 12 was kept away from to main cabinet 11.
Preferably, the fan 4 is a backward tilting centrifugal fan with direct current power supply, the rotation center of the backward tilting centrifugal fan and the central axis of the vent hole are on the same straight line, the air inlet side of the backward tilting centrifugal fan is connected with the partition plate 6, and a flow guide cover 7 is installed on the vent hole of the partition plate 6.
The bottom of the rack 1 is provided with a plurality of cross beams 8 for hanging, and the cross beams 8 are provided with bolt mounting holes. When the device is installed, the machine frame 1 is hung and installed on the top of the garage.
The invention also relates to a control method of the anti-condensation dehumidifying device, which comprises the following steps:
step one, detecting the current environment humidity, starting a fan to operate when the detected humidity value is greater than a set humidity value, and then delaying to start a compressor to operate;
as shown in fig. 8, in this embodiment, the environment humidity is relative humidity, the environment humidity is obtained by detecting with an environment temperature and humidity sensor, the environment temperature and humidity sensor is generally two, and an average value of the two sensors is adopted, preferably, the environment temperature and humidity sensors may also be multiple and installed at different positions, the set weights of the environment temperature and humidity sensors at different positions are different, and the current environment humidity is obtained by weighting calculation. In this embodiment, the set humidity value is 35% relative humidity, and when the detected ambient humidity is higher than the 35% humidity line, the fan and the compressor are started to operate. The humidity value is generally set to the critical point of dew condensation, and when the humidity is higher than this value, dew condensation occurs, and when the ambient humidity is lower than this value, dew condensation does not occur.
In other embodiments, the ambient humidity may also be absolute humidity.
Step two, detecting the temperature T1 of the air condensed by the evaporator, and comparing the value of T1 with the set temperature T2; the T1 is obtained by measuring a temperature and humidity sensor of the unit;
thirdly, adjusting the rotating speed of the fan according to the comparison result of T1 and T2;
in the third step, the adjusting mode of the rotating speed of the fan is as follows:
if T1 is greater than T2, the fan speed is reduced to reduce the speed of air flow through the evaporator;
if T1 is less than T2, increasing the fan speed to increase the air flow speed through the evaporator;
if T1 equals T2, the fan speed remains constant, or fluctuates.
Preferably, the set temperature T2 is less than the ambient dew point temperature, T2 ranges from 5 ℃ to 15 ℃, and the initial set value of T2 may be 14 ℃ during actual operation. The dew point temperature may be measured by a dew point hygrometer, or a value of T2 may be set according to conventional experience.
Preferably, in the first step, the blower is started to operate for at least 2min, and then the compressor is started to operate, so that delay protection is provided for the compressor.
Preferably, the minimum rotating speed of the fan is not lower than 500 r/min.
Preferably, in the second step, the detection frequency of the air temperature T1 is at least once per minute.
Preferably, the fan speed in step three is regulated by PID regulation. When T1 is larger than T2, the larger the difference between the two is, the lower the fan rotating speed is; when T1 is less than T2, the larger the difference between the two, the faster the fan speed.
Preferably, the method can also realize an induced ventilation function, and specifically, the first step further comprises the step of starting only the fan to operate for ventilation when the detected humidity value is close to the set value, because the air fluidity of the underground garage is poor, when the humidity value is close to the set humidity value, the local humidity of the underground garage is possibly greater than the set value, and the condensation phenomenon occurs, at the moment, the air flows through the operation of the fan, so that the humidity of the whole garage becomes balanced, the local condensation phenomenon can be avoided, meanwhile, the energy consumption of equipment is reduced, and the energy-saving effect is achieved.
The compressor of the invention runs with constant power after starting and does not need to be controlled by frequency conversion.
The foregoing is directed to embodiments of the present invention, and it is understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. A control method of a dewing prevention dehumidification device is characterized by comprising the following steps:
step one, detecting the current environment humidity, starting a fan to operate when the detected humidity value is greater than a set humidity value, and then delaying to start a compressor to operate;
step two, detecting the temperature T1 of the air condensed by the evaporator, and comparing the value of T1 with the set temperature T2;
thirdly, adjusting the rotating speed of the fan according to the comparison result of T1 and T2;
if T1 is greater than T2, the fan speed is reduced to reduce the speed of air flow through the evaporator;
if T1 is less than T2, the fan speed is increased to increase the air flow through the evaporator.
2. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: the set temperature T2 is less than the environmental dew point temperature, and the value range of T2 is 5-15 ℃.
3. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: in the first step, the compressor is started to operate after the fan is started to operate for at least 2 min.
4. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: the minimum rotating speed of the fan is not lower than 500 r/min.
5. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: in the second step, the detection frequency of the air temperature T1 is at least once per minute.
6. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: and the fan in the third step is a direct current fan, and the rotating speed of the fan is regulated in a PID (proportion integration differentiation) mode.
7. The method of controlling the dewing prevention and dehumidification device as claimed in claim 6, wherein: in the third step, when the T1 is greater than the T2, the larger the difference between the T1 and the T2, the lower the rotating speed of the fan is; when T1 is less than T2, the larger the difference between the two, the faster the fan speed.
8. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: and the first step also comprises starting the fan to operate to ventilate when the detected humidity value is close to the set value.
9. The method of controlling the dewing prevention and dehumidification device as claimed in claim 1, wherein: the compressor is operated at a constant power after being started.
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| CN201910857408.3A CN110645645B (en) | 2019-09-09 | 2019-09-09 | Control method of anti-condensation dehumidification device of underground garage |
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| CN201910857408.3A CN110645645B (en) | 2019-09-09 | 2019-09-09 | Control method of anti-condensation dehumidification device of underground garage |
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| CN111174343A (en) * | 2020-02-07 | 2020-05-19 | 青岛海纳云科技控股有限公司 | Indoor anti-condensation dehumidification system and control method |
| CN111578486A (en) * | 2020-04-21 | 2020-08-25 | 青岛海尔空调器有限总公司 | Method and device for preventing condensation of air conditioner panel and air conditioner |
| CN111811105A (en) * | 2020-07-13 | 2020-10-23 | 南京天加环境科技有限公司 | Control method for preventing water blowing during refrigeration or dehumidification operation of air conditioner internal unit |
| CN111928436A (en) * | 2020-08-05 | 2020-11-13 | Tcl空调器(中山)有限公司 | Indoor environment sterilization method, air conditioner and computer readable storage medium |
| CN113446718A (en) * | 2020-03-25 | 2021-09-28 | 佛山市顺德区美的电热电器制造有限公司 | Control method, device and equipment of purification device, air purifier and medium |
| CN113669804A (en) * | 2020-04-30 | 2021-11-19 | 杭州香谷山科技有限公司 | Dehumidifier control method and industrial intelligent dehumidification system |
| CN115207788A (en) * | 2022-08-09 | 2022-10-18 | 国网福建省电力有限公司 | Switchgear intelligent dehumidification device based on heater optimization |
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| CN111578486B (en) * | 2020-04-21 | 2022-03-22 | 青岛海尔空调器有限总公司 | Method and device for preventing condensation of air conditioner panel and air conditioner |
| CN113669804A (en) * | 2020-04-30 | 2021-11-19 | 杭州香谷山科技有限公司 | Dehumidifier control method and industrial intelligent dehumidification system |
| CN111811105A (en) * | 2020-07-13 | 2020-10-23 | 南京天加环境科技有限公司 | Control method for preventing water blowing during refrigeration or dehumidification operation of air conditioner internal unit |
| CN111811105B (en) * | 2020-07-13 | 2021-11-16 | 南京天加环境科技有限公司 | Control method for preventing water blowing during refrigeration or dehumidification operation of air conditioner internal unit |
| CN111928436A (en) * | 2020-08-05 | 2020-11-13 | Tcl空调器(中山)有限公司 | Indoor environment sterilization method, air conditioner and computer readable storage medium |
| CN115207788A (en) * | 2022-08-09 | 2022-10-18 | 国网福建省电力有限公司 | Switchgear intelligent dehumidification device based on heater optimization |
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