CN109210683B - Control method for air conditioning unit used in public area and air conditioning unit - Google Patents
Control method for air conditioning unit used in public area and air conditioning unit Download PDFInfo
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- CN109210683B CN109210683B CN201811062909.4A CN201811062909A CN109210683B CN 109210683 B CN109210683 B CN 109210683B CN 201811062909 A CN201811062909 A CN 201811062909A CN 109210683 B CN109210683 B CN 109210683B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008859 change Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000000265 homogenisation Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Classifications
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method for an air conditioning unit in a public area, which is characterized in that the public area is divided into a plurality of sub-areas, the temperature of each sub-area is monitored in real time, and the air output of each sub-area is adjusted according to the difference between the temperature of each sub-area and the set temperature. By adopting the control method for the air conditioning unit in the public area, the cold quantity of each subarea in the public area can be adjusted as required, and the temperature homogenization degree of the whole area is improved. The invention also discloses an air conditioner adopting the method.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a control method of an air conditioning unit for a public area and the air conditioning unit.
Background
At present, all public areas such as large public transportation fields and the like need to be provided with air conditioning equipment, such as railway stations, subways, bus stations and the like, and in consideration of the characteristics of large people flow density, high service requirements and the like of the stations, common air conditioning units are arranged at places far away from crowds, so that the interference of unit operation on the crowds can be reduced, and the service quality of the stations is improved.
These public areas are currently faced with several problems: (1) the unit is far away from the crowd subarea, the feedback delay of the system is high, and the cold quantity is difficult to adjust in time according to the comfort requirement of the crowd; (2) the public areas have the characteristic of high personnel mobility, which means that the purpose of homogenizing the temperature distribution cannot be achieved by means of uniform cold output of each subarea; (3) some field station sub-area shapes tend to be long and narrow, and the longer the unit distance is, the higher the difficulty of the homogenization control of the whole field station temperature distribution is.
Disclosure of Invention
The invention aims to provide a control method for an air conditioning unit in a public area and an air conditioner, aiming at the defects of untimely cold quantity regulation of the air conditioning unit in the public area and uneven temperature of sub-areas in the prior art, so that the cold quantity of each sub-area is regulated according to the requirement, and the temperature homogenization degree of the whole area is improved.
The embodiment of the invention provides a control method for an air conditioning unit in a public area, which is characterized in that the public area is divided into a plurality of sub-areas, the temperature of each sub-area is monitored in real time, and the air output of each sub-area is adjusted according to the difference between the temperature of each sub-area and the set temperature.
In the embodiment of the present invention, assuming that the temperature set in the station is T, and the detected average temperatures of the sub-areas are T1, T2, T3, … Tn, for the ith sub-area, the air output is adjusted as follows:
if (Ti-T) > 1, the adjusted air output Qi2 = Qi1 [ [1+ (Ti-T) ] η ];
if (Ti-T) < -1, the adjusted air output Qi2 = Qi1 [1+ (Ti-T) [ ] is obtained;
if the | Ti-T | < = 1, the adjusted air output Qi2 = Qi 1;
wherein Qi1 is the original air output of the ith sub-region, and eta is the unit temperature rise air output increase percentage.
In the embodiment of the invention, when (Ti-T) > 1, the value range of eta is 2-5%.
In the embodiment of the invention, when (Ti-T) < -1, the value range of eta is-5 to-2 percent.
In the embodiment of the present invention, the final air output of each sub-region is further adjusted according to the net personnel increment N of the sub-region as follows:
the final air output Qi = Qi2 | N | (1+ α), where α is the net air gain factor.
In the embodiment of the invention, when N is more than 0, the value range of alpha is 1-5%; when N is less than 0, the value range of alpha is-5% to-1%.
In an embodiment of the present invention, the method for controlling an air conditioning unit for a public area further includes:
and analyzing and calculating the total change trend of the temperature in the current station according to the temperature distribution of each sub-region in the station, and adjusting the total air supply quantity of the air conditioning unit according to the sum of the air output quantity demands of all the sub-regions in the station to realize the adjustment of the cold output.
In the embodiment of the invention, if the sum of the air output demands of all the sub-areas is lower than the current total air supply quantity, the total air supply quantity of the air conditioning unit is reduced, and the air supply quantity is supplied to each sub-area air duct in proportion;
if the sum of the air output demands of all the sub-areas is higher than the current total air supply quantity, the total air supply quantity of the air conditioning unit is increased;
and if the sum of the air output demands of all the sub-areas exceeds the limit value of the total air supply of the air conditioning unit, adjusting the frequency of the air conditioning compressor.
In the embodiment of the invention, the method for adjusting the frequency of the air conditioner compressor comprises the following steps:
the return air temperature in the air conditioning unit is corrected through the change of the cold quantity demand fed back by all the sub-areas, and the frequency of a compressor of the unit is adjusted through the corrected result, so that the adjustment of the refrigerating quantity is realized.
The embodiment of the invention also provides an air conditioning unit for the public area, and the control method for the air conditioning unit for the public area is adopted when the air conditioning unit runs.
Compared with the prior art, the control method of the air conditioning unit for the public area and the air conditioning unit divide the public area into a plurality of sub-areas, monitor the temperature of each sub-area in real time, adjust the air output of each sub-area according to the difference between the temperature of each sub-area and the set temperature, adjust the air output of each sub-area according to the flow condition of people, and adjust the cold quantity required by the field station area in time by controlling the operating frequency and the air quantity of the air conditioning unit, so that the temperature distribution uniformity is improved, the cold quantity of the public area is adjusted in time according to the requirement, and the comfort level of the whole people in the public area is further improved.
Drawings
Fig. 1 is a flowchart of a control method for an air conditioning unit in a public area according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of dividing a common area into a plurality of sub-areas according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in the embodiment of the present invention, a control method for an air conditioning unit in a public area is provided, where the public area is divided into a plurality of sub-areas, the temperature of each sub-area is monitored in real time, and the air output of each sub-area is adjusted according to a difference between the temperature of each sub-area and a set temperature.
As shown in fig. 2, the common area is divided into a plurality of sub-areas, and a plurality of temperature sensors are disposed in each sub-area. The principle of arranging a plurality of temperature sensors is as follows: each sensor is arranged at the central position of the corresponding air duct opening action sub-area, so that the number of the sensors can be properly reduced when the cost problem is considered, but each sensor needs to be ensured to be installed at the central position of a plurality of air duct opening action areas around as much as possible; the sensors should be intensively arranged in areas with higher density of people flow to obtain the optimal economic benefit; the sensors need to be distributed as evenly as possible over the measurement range. The temperature of each sub-zone is taken as the average of the temperatures of the plurality of sensors in that sub-zone.
Assuming that the temperature set in the station is T and the average temperatures detected in the sub-areas are T1, T2, T3 and … Tn, respectively, the air output for the ith sub-area is adjusted as follows:
if (Ti-T) > 1, namely the actual temperature of the region is higher, increasing the air output of the region, and adjusting the air output Qi2 = Qi1 [ [1+ (Ti-T) ] eta ];
if (Ti-T) < -1, namely the actual temperature of the region is lower, reducing the air output of the region, and adjusting the air output Qi2 = Qi 1+ (Ti-T) × η ];
if the absolute value of Ti-T < = 1, the current temperature is relatively proper, and the current air output is kept, wherein Qi1 is the original air output of the ith sub-region, eta is the unit temperature rise air volume lifting percentage, and when the absolute value of (Ti-T) > 1, the numeric area of eta is 2% -5%; when the value of (Ti-T) is less than-1, the value range of eta is-5 to-2 percent.
It should be noted that the adjustment of the air output of each sub-area can be realized by adjusting the opening of the air output regulating valve of the air outlet in the area.
Further, in the control method for the air conditioning unit in the public area provided by the embodiment of the present invention, the final air output volume of each sub-area is further adjusted according to the net human increment N of the sub-area as follows:
the final air output Qi = Qi2 | N | (1+ alpha), wherein alpha is the net air output coefficient, and when N >0, the value range of alpha is 1% -5%; when N is less than 0, the value range of alpha is-5% to-1%.
It should be noted that the net human increment N for each sub-area is provided by the video monitoring device and is calculated by identifying human figures in the images captured by the video monitoring device.
Further, the control method hai for the air conditioning unit in the public area includes:
and analyzing and calculating the total change trend of the temperature in the current station according to the temperature distribution of each sub-region in the station, and adjusting the total air supply quantity of the air conditioning unit according to the sum of the air output quantity demands of all the sub-regions in the station to realize the adjustment of the cold output.
It should be noted that, after the air volume required by each sub-area is obtained, the air volumes calculated by all the sub-areas are added, and compared with the total air volume before a regulation period, if the required air volume is increased, the proportion required to be increased is transmitted to the unit through the controller, and if the required air volume is decreased, the proportion required to be decreased is transmitted to the unit through the controller, and the unit provides the proper total air volume.
If the sum of the air output requirements of all the sub-areas is lower than the current total air supply amount, reducing the total air supply amount of the air conditioning unit, and proportionally supplying air amount to each sub-area air duct;
if the sum of the air output demands of all the sub-areas is higher than the current total air supply quantity, the total air supply quantity of the air conditioning unit is increased;
and if the sum of the air output demands of all the sub-areas exceeds the limit value of the total air supply of the air conditioning unit, adjusting the frequency of the air conditioning compressor.
In the embodiment of the invention, the method for adjusting the frequency of the air conditioner compressor comprises the following steps:
the return air temperature in the air conditioning unit is corrected through the change of the cold quantity demand fed back by all the sub-areas, and the frequency of a compressor of the unit is adjusted through the corrected result, so that the adjustment of the refrigerating quantity is realized.
The embodiment of the invention also provides an air conditioning unit for the public area, and the control method for the air conditioning unit for the public area is adopted when the air conditioning unit runs.
In summary, according to the control method of the air conditioning unit for the public area and the air conditioning unit, the public area is divided into the plurality of sub-areas, the temperature of each sub-area is monitored in real time, the air output of each sub-area is adjusted according to the difference between the temperature of each sub-area and the set temperature, the air output of each sub-area is adjusted according to the flow condition of people, and the cold quantity required by the field station area is adjusted in time by controlling the operating frequency and the air quantity of the air conditioning unit, so that the temperature distribution uniformity is improved, the cold quantity of the public area is adjusted in time according to needs, and the comfort level of the whole people in the public area is further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A control method for an air conditioning unit in a public area is characterized in that the public area is divided into a plurality of sub-areas, the temperature of each sub-area is monitored in real time, the air output of each sub-area is adjusted according to the difference value between the temperature of each sub-area and the set temperature, assuming that the set temperature in a station is T, the detected average temperature of each sub-area is T1, T2, T3 and … Tn, and the air output of the ith sub-area is adjusted by the following method:
if (Ti-T) > 1, the adjusted air output Qi2 = Qi1 [1+ (Ti-T) ] eta ], and the value range of eta is 2-5%;
if (Ti-T) < -1, the adjusted air output Qi2 = Qi 1+ (Ti-T) eta ], and the value range of eta is-5 to-2 percent;
if the | Ti-T | < = 1, the adjusted air output Qi2 = Qi 1;
wherein Qi1 is the original air output of the ith sub-region, and eta is the unit temperature rise air output increase percentage.
2. The control method for the air conditioning units in the public area according to claim 1, characterized in that the final air output of each sub-area is further adjusted according to the net human increment N of the sub-area as follows:
the final air output Qi = Qi2 | N | (1+ α), where α is the net air gain factor.
3. The control method of the air conditioning unit for the public area according to claim 2, wherein when N >0, a value of α ranges from 1% to 5%; when N is less than 0, the value range of alpha is-5% to-1%.
4. The control method of an air conditioning unit for a public area as set forth in claim 2, further comprising:
and analyzing and calculating the total change trend of the temperature in the current station according to the temperature distribution of each sub-region in the station, and adjusting the total air supply quantity of the air conditioning unit according to the sum of the air output quantity demands of all the sub-regions in the station to realize the adjustment of the cold output.
5. The control method for air conditioning units of a public area according to claim 4, wherein if the sum of the air output demands of all the sub-areas is lower than the current total air supply amount, the total air supply amount of the air conditioning units is reduced, and the air amount is proportionally supplied to the air ducts of each sub-area;
if the sum of the air output demands of all the sub-areas is higher than the current total air supply quantity, the total air supply quantity of the air conditioning unit is increased;
and if the sum of the air output demands of all the sub-areas exceeds the limit value of the total air supply of the air conditioning unit, adjusting the frequency of the air conditioning compressor.
6. The control method of an air conditioning unit for a public area as set forth in claim 5, wherein the method of adjusting the frequency of the air conditioning compressor is as follows:
the return air temperature in the air conditioning unit is corrected through the change of the cold quantity demand fed back by all the sub-areas, and the frequency of a compressor of the unit is adjusted through the corrected result, so that the adjustment of the refrigerating quantity is realized.
7. Air conditioning assembly for public areas, characterized in that it is operated using a control method for air conditioning assemblies for public areas according to any of claims 1 to 6.
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| CN201811062909.4A CN109210683B (en) | 2018-09-12 | 2018-09-12 | Control method for air conditioning unit used in public area and air conditioning unit |
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| CN201811062909.4A CN109210683B (en) | 2018-09-12 | 2018-09-12 | Control method for air conditioning unit used in public area and air conditioning unit |
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| CN114923219A (en) * | 2022-06-22 | 2022-08-19 | 美的集团武汉暖通设备有限公司 | Air conditioner control method, air conditioner system and air conditioner |
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