CN113091199A - Dehumidification control method and device and air conditioner - Google Patents

Dehumidification control method and device and air conditioner Download PDF

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Publication number
CN113091199A
CN113091199A CN202110501067.3A CN202110501067A CN113091199A CN 113091199 A CN113091199 A CN 113091199A CN 202110501067 A CN202110501067 A CN 202110501067A CN 113091199 A CN113091199 A CN 113091199A
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value
humidity
temperature
air conditioner
load
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CN113091199B (en
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刘佳
扶胜根
翁耀衔
李伟娜
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Ningbo Aux Electric Co Ltd
Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd
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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
    • 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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • 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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a dehumidification control method and device and an air conditioner, and relates to the technical field of air conditioners. The dehumidification control method comprises the following steps: acquiring a first humidity value of a first indoor height; acquiring a second humidity value of a second height in the room; wherein the first height is less than the second height; acquiring a first temperature value of a first indoor height; calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value; judging whether the humidity load value is greater than or equal to a preset humidity value or not; and if the humidity load value is greater than or equal to the preset humidity value, controlling the air conditioner to dehumidify. In the embodiment of the invention, the humidity load value at the current moment can be calculated according to the acquired first humidity value, the second humidity value and the first temperature value at different positions, the hysteresis and the complexity of humidity adjustment can be solved, the current indoor humidity change and the load change can be more accurately obtained, and accurate calculation is provided for the humidity adjustment of the air conditioner, so that the dehumidification precision of the air conditioner is improved.

Description

Dehumidification control method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a dehumidification control method and device and an air conditioner.
Background
Generally, the bathroom space is small and relatively closed, ventilation is not smooth, most of water mist in the bathroom cannot be discharged in time along with the gradual rise of the shower water temperature and the ambient temperature in the bathing process, and discomfort conditions such as dizziness, chest distress and the like can be caused due to overhigh humidity. And the humidity in the bathroom is higher, and it can damage the electricity and can lead to the toilet articles to go moldy to be in the humid state for a long time, causes unnecessary waste, and dehumidification method among the prior art at present mostly has hysteresis nature, leads to the dehumidification precision lower.
Disclosure of Invention
The problem solved by the invention is how to solve the hysteresis and complexity of humidity regulation, thereby improving the dehumidification precision of the air conditioner.
In order to solve the above problems, the present invention provides a dehumidification control method, a dehumidification control device and an air conditioner.
In a first aspect, an embodiment of the present invention provides a dehumidification control method, applied to an air conditioner, where the dehumidification control method includes:
acquiring a first humidity value of a first indoor height;
acquiring a second humidity value of a second height in the room; wherein the first height is less than the second height;
acquiring a first temperature value of the first height in the room;
calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value;
judging whether the humidity load value is greater than or equal to a preset humidity value or not;
and if the humidity load value is greater than or equal to the preset humidity value, controlling the air conditioner to dehumidify.
In the embodiment of the invention, the humidity load value at the current moment can be calculated according to the acquired first humidity value, the second humidity value and the first temperature value at different positions, the hysteresis and the complexity of humidity adjustment can be solved, the current indoor humidity change and the load change can be more accurately obtained, and accurate calculation is provided for the humidity adjustment of the air conditioner, so that the dehumidification precision of the air conditioner is improved.
In an alternative embodiment of the present invention, the step of calculating the humidity load value according to the first humidity value, the second humidity value and the first temperature value comprises:
calculating a humidity deviation value according to the first humidity value and the second humidity value;
calculating a temperature deviation value according to the first temperature value and the set temperature value;
and calculating the humidity load value according to the humidity deviation value and the temperature deviation value.
In an optional embodiment of the present invention, the step of calculating the humidity deviation value according to the first humidity value and the second humidity value includes:
calculating a humidity difference value of the first humidity value and the second humidity value obtained at the current moment;
calculating the square of the humidity difference to obtain a real-time humidity value;
and calculating the real-time humidity value at the current moment and the average value of all calculated real-time humidity values before the current moment to obtain the humidity deviation value.
In an optional embodiment of the present invention, the step of calculating the temperature deviation value according to the first temperature value and the set temperature value includes:
calculating the difference value between the first temperature value and the set temperature value obtained at the current moment to obtain a real-time temperature value;
and calculating the average value of all the real-time temperature values before the current moment to obtain the temperature deviation value.
In an optional embodiment of the present invention, if the humidity load value is greater than or equal to the preset humidity value, the step of controlling the air conditioner to dehumidify includes:
and controlling the air conditioner to operate in a dehumidification mode, and controlling a vacuum pump of the air conditioner to start.
In an optional embodiment of the present invention, the dehumidification control method further includes:
calculating the difference value between the humidity load value at the current moment and the humidity load value at the previous moment to obtain a load difference value;
adjusting the operating frequency of the vacuum pump according to the load difference; wherein the load difference corresponds to the operating frequency.
In an optional embodiment of the present invention, if the humidity load value is greater than or equal to the preset humidity value, the step of controlling the air conditioner to dehumidify includes:
and after the vacuum pump is started, controlling an indoor fan of the air conditioner to stop working.
In an optional embodiment of the present invention, the dehumidification control method further includes:
and if the humidity load value is smaller than the preset humidity value, controlling a vacuum pump of the air conditioner to be closed.
In an optional embodiment of the present invention, the dehumidification control method further includes:
calculating the difference value between the humidity load value at the current moment and the humidity load value at the previous moment to obtain a load difference value;
calculating the load difference value at the current moment and the load difference value at the previous moment to obtain a ratio deviation value;
and controlling the opening of an electronic expansion valve of the air conditioner according to the ratio deviation value, so that the temperature of an evaporator of the air conditioner is adjusted to a preset temperature value.
In an optional embodiment of the present invention, the step of controlling an opening degree of an electronic expansion valve of the air conditioner according to the ratio deviation value to adjust the temperature of the evaporator to a preset temperature value includes:
and if the deviation value of the ratio is greater than or equal to a preset ratio, adjusting the increasing step number of the electronic expansion valve according to the superheat deviation and the change rate of the superheat deviation, so that the temperature of the evaporator is reduced to the preset temperature value.
In an optional embodiment of the present invention, the step of controlling an opening degree of an electronic expansion valve of the air conditioner according to the ratio deviation value to adjust the temperature of the evaporator to a preset temperature value includes:
and if the deviation value of the ratio is smaller than the preset ratio, adjusting the reduced step number of the electronic expansion valve according to the supercooling degree deviation and the supercooling degree deviation change rate, so that the temperature of the evaporator is increased to the preset temperature value.
In a second aspect, an embodiment of the present invention provides a dehumidification control apparatus for an air conditioner, including:
the first acquiring module is used for acquiring a first humidity value of a first indoor height;
the second acquisition module is used for acquiring a second humidity value of a second indoor height; wherein the first height is less than the second height;
the third acquisition module is used for acquiring a first temperature value of the first indoor height;
the calculation module is used for calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value;
the judging module is used for judging whether the humidity load value is greater than or equal to a preset humidity value or not;
and the control module is used for controlling the air conditioner to dehumidify if the humidity load value is greater than or equal to the preset humidity value.
The beneficial effects of the dehumidification control device provided by the second aspect are the same as those of the dehumidification control method provided by the first aspect, and are not described herein again.
In a third aspect, an embodiment of the present invention provides an air conditioner, where the air conditioner includes a controller, and the controller is configured to execute a computer instruction to implement the dehumidification control method provided in the first aspect.
The third aspect provides the same advantageous effects as those provided by the first aspect, and the description thereof is omitted.
Drawings
Fig. 1 is a block diagram illustrating a connection between an air conditioner and a line controller according to an embodiment of the present invention.
Fig. 2 is a flowchart of a dehumidification control method according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating sub-steps of step S400 of the dehumidification control method according to an embodiment of the present invention.
Fig. 4 is a flowchart illustrating sub-steps of step S410 of the dehumidification control method according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating sub-steps of step S420 of the dehumidification control method according to an embodiment of the present invention.
Fig. 6 is a flowchart illustrating steps S710 to S740 of a dehumidification control method according to an embodiment of the present invention.
Fig. 7 is a block diagram of a dehumidification control apparatus according to an embodiment of the present invention.
Description of reference numerals:
10-an air conditioner; 11-a humidity sensor; 12-a controller; 13-a vacuum pump; 14-an evaporator; 15-a wire controller; 20-a dehumidification control device; 21-a first acquisition module; 22-a second acquisition module; 23-a third acquisition module; 24-a calculation module; 25-a judgment module; 26-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Examples
Referring to fig. 1, a dehumidification control method and apparatus provided in an embodiment of the present invention are applied to an air conditioner 10, and the dehumidification method and apparatus provided in an embodiment of the present invention can solve the hysteresis and complexity of humidity adjustment, can more accurately obtain the current indoor humidity change and load change, and provide accurate calculation for humidity adjustment of the air conditioner 10, thereby improving the dehumidification precision of the air conditioner 10.
The dehumidification control method provided in this embodiment is mainly applied to the air conditioner 10, and the air conditioner 10 is widely applied to daily life and is mainly used to be placed indoors for adjusting indoor temperature and humidity. The air conditioner 10 in this embodiment is mainly installed in a bathroom, which is generally small in space and relatively airtight, and has unsmooth ventilation, and most of water mist in the bathroom cannot be discharged in time along with the gradual rise of the shower water temperature and the ambient temperature in the bathing process, and the discomfort such as dizziness and chest distress can be caused by excessive humidity. The dehumidification control method and the dehumidification control device provided by the embodiment of the invention can be used for dehumidifying a bathroom to condense water vapor in the air, so that the content of the water vapor in the air is reduced, and the aim of dehumidification is fulfilled.
The air conditioner 10 includes a controller 12 and a humidity sensor 11, the air conditioner 10 is disposed at a second height in the bathroom, and the humidity sensor 11 is configured to detect a second humidity value at the second height and send the second humidity value to the controller 12. Still set up drive-by-wire ware 15 in the bathroom, drive-by-wire ware 15 sets up on indoor first height for detect first humidity value and first temperature value of first height, and send first humidity value and first temperature value to controller 12, controller 12 calculates indoor humidity load value after receiving first humidity value, second humidity value and first temperature value, and carries out dehumidification processing according to humidity load value control air conditioner 10, controls opening of vacuum pump 13 or adjusts the temperature value of evaporimeter 14.
In one case, the air conditioner 10 is installed above the bathroom, and the line controller 15 is installed below the bathroom.
Referring to fig. 2, the dehumidification control method includes the following steps:
step S100, a first humidity value of a first height in a room is obtained.
The water smoke in the bathroom is great, can have the condition that humidity is different at the height of difference, acquires the humidity value of different positions can be more accurate the accurate humidity of current bathroom of acquireing to be convenient for accurate dehumidification.
It will be readily appreciated that the higher the altitude, the higher the water vapour content of the air, and that the first humidity value will be relatively small due to the relatively low position of the first altitude.
Step S200, acquiring a second humidity value of a second indoor height; wherein the first height is less than the second height.
Similarly, the second height is the installation height of the air conditioner 10, the second humidity value at the second height of the air conditioner 10 can be obtained, the second humidity value at the higher position can be obtained, and the first humidity value and the second humidity value are different from each other, so that the first humidity value and the second humidity value cannot be accurately reversed to the actual indoor humidity value at the current moment, and the current indoor humidity deviation value can be calculated through the first humidity value and the second humidity value, so that the current indoor humidity condition can be judged.
Step S300, a first temperature value of a first indoor height is obtained.
Similarly, the temperature values at different levels in the bathroom may differ slightly, with higher water vapor levels being higher and lower water vapor levels being lower.
It should be noted that, there is no order among step S100, step S200, and step S300, and step S100, step S200, and step S300 may be executed first.
Step S400, calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value.
In this embodiment, the humidity load value in the current bathroom can be integrated according to the first humidity value, the second humidity value and the first temperature value, and the air conditioner 10 is controlled to perform dehumidification processing according to the humidity load value, so that the hysteresis and complexity of humidity adjustment can be solved, the change of the humidity load in the current bathroom can be obtained more accurately, and more accurate calculation is provided for humidity adjustment of the air conditioner 10.
Referring to fig. 3, step S400 may include step S410, step S420 and step S430.
In step S410, a humidity deviation value is calculated according to the first humidity value and the second humidity value.
In this embodiment, the first humidity value and the second humidity value are humidity values at different positions in the bathroom, and the humidity deviation value between the first humidity value and the second humidity value can reflect the humidity difference value between the higher position and the lower position in the current bathroom, so that the change of the current indoor humidity load can be reflected more conveniently, and the humidity adjustment precision is improved.
Referring to fig. 4, step S410 may include step S412, step S414, and step S416.
In step S412, a humidity difference between the first humidity value and the second humidity value obtained at the current time is calculated.
In this embodiment, a set of data is collected every preset time, that is, a set of data is collected every preset time: the humidity difference value is a difference value between the first humidity value and the second humidity value acquired at the same time, and can be considered as a humidity difference value obtained by subtracting the second humidity value from the first humidity value.
And step S414, calculating the square of the humidity difference value to obtain a real-time humidity value.
Because the second humidity value may be larger between the first humidity value and the second humidity value, the calculation accuracy of the whole humidity load value can be improved by obtaining the real-time humidity value by solving the square value of the humidity difference value.
Step S416, calculating the real-time humidity value at the current time and the average value of all the calculated real-time humidity values before the current time to obtain the humidity deviation value.
Similarly, a real-time humidity value can be calculated each time the first humidity value and the second humidity value are obtained, and after the real-time humidity value at the current moment is calculated, the average value of all real-time humidity values at the current moment is calculated, so that the humidity deviation value at the current moment can be obtained. Namely, the sum of all real-time humidity values is divided by the acquired times to obtain the humidity deviation value at the current moment.
In other words, steps S412 to S416 may be expressed by the following formulas:
Figure BDA0003056291900000071
wherein K (T) represents a deviation value of humidity, H1Represents a first humidity value, H2Representing the second humidity value and n representing the number of acquisitions.
Referring to fig. 3, in step S420, a temperature deviation value is calculated according to the first temperature value and the set temperature value.
It will be readily appreciated that the higher the water vapor content in the chamber, the higher the temperature in the chamber, and that the temperature value in the chamber may be a side reflection of the current humidity value in the chamber. The current temperature deviation value can be calculated through the first temperature value and the set temperature value, if the temperature deviation value is large, the indoor humidity can be considered to be large, the dehumidification force can be increased, if the temperature deviation value is small, the current indoor humidity can be considered to be small, the current dehumidification force can be kept, or the current dehumidification force can be slightly reduced.
Referring to fig. 5, step S420 may include step S422 and step S424.
Step S422, calculating a difference between the first temperature value obtained at the current time and the set temperature value to obtain a real-time temperature value.
Similarly, a first temperature value can be obtained at intervals of a preset time, that is, the data obtained at the same time comprise a first humidity value, a second humidity value and a first temperature value, and after the first temperature value is obtained at present, the difference between the first temperature value and the set temperature value is calculated to obtain a real-time temperature value.
In step S424, an average value of all real-time temperature values at and before the current time is calculated to obtain a temperature deviation value.
After the real-time temperature value at the current moment is calculated, the average value of the real-time temperature values at all the previous moments is calculated to obtain the temperature deviation value at the current moment, and the temperature deviation value at the current moment is calculated by solving the average value of the real-time temperature values at all the previous moments, so that sudden change of the first temperature value acquired at a single time can be reduced, and the precision of the final humidity load value is improved.
In other words, the steps S422 and S424 can be expressed by the following formulas:
Figure BDA0003056291900000081
wherein T (T) represents a temperature deviation value, Δ TnThe real-time temperature value calculated at the nth time is represented, and n represents the number of acquisition times.
Referring to fig. 3, in step S430, a humidity load value is calculated according to the humidity deviation value and the temperature deviation value.
In this embodiment, the humidity deviation value and the temperature deviation value both affect the final humidity load value, and the humidity load value can be calculated by the following formula:
M(T)＝(K(T)*T(t)*Q)；
wherein, m (t) represents a humidity load value, k (t) represents a humidity deviation value, t (t) represents a temperature deviation value, and Q represents a humidity cluster coefficient, and the humidity load value at the current moment can be calculated according to the humidity deviation value and the temperature deviation value, so that hysteresis and complexity of humidity adjustment can be solved, current indoor humidity change and load change can be obtained more accurately, and accurate calculation is provided for humidity adjustment of the air conditioner 10.
Referring to fig. 2, in step S500, it is determined whether the humidity load value is greater than or equal to a predetermined humidity value.
Generally, the comfortable humidity load range of human body is approximately 30% -60%, and in order to adjust the indoor humidity value to the comfortable humidity range of human body, the preset humidity value generally takes a middle value, that is, the preset humidity value is generally 45%.
Judging the relationship between the humidity load value and the preset humidity value can determine whether the current indoor humidity value is normal, if the humidity load value is larger, the air conditioner 10 needs to dehumidify the indoor space, and if the humidity load value is smaller, the dehumidification can be performed temporarily.
In step S610, if the humidity load value is greater than or equal to the preset humidity value, the air conditioner 10 is controlled to dehumidify.
In the embodiment, when the humidity load value is greater than or equal to the preset humidity value, it may be determined that the current indoor humidity load value is large, and if the humidity is not timely dehumidified, the humidity may be too high, which may damage electricity and cause the toilet to go moldy and unnecessary waste due to the long-term humidity in the humid state, and the air conditioner 10 is controlled to perform the dehumidification process.
In the present embodiment, the air conditioner 10 is mainly controlled to operate in the dehumidification mode, and the vacuum pump 13 of the air conditioner 10 is controlled to start. If the air conditioner 10 is currently in the heating mode or the cooling mode, the air conditioner 10 is switched to the dehumidification mode under the condition that the humidity load value is greater than the preset humidity value, and the vacuum pump 13 is started, so that the air intake of the air conditioner 10 is increased, the dehumidification speed is increased, and the indoor air is rapidly dehumidified.
The vacuum pump 13 has a larger air volume than the indoor fan, and starting the vacuum pump 13 under the condition that the humidity load value is greater than or equal to the preset humidity value can increase the air volume of the indoor air entering the indoor unit, thereby accelerating the speed of dehumidifying the indoor air.
When the air conditioner 10 operates in the dehumidification mode, the vacuum pump 13 is first controlled to start at a preset frequency, and further, the frequency of the vacuum pump 13 can be adjusted according to the change of the humidity load value, so that the indoor humidity load value can be finally kept around the preset humidity value and is approximately equal to the preset humidity value.
In step S620, after the vacuum pump 13 is started, the indoor fan of the air conditioner 10 is controlled to stop operating.
In this embodiment, after the air conditioner 10 enters the dehumidification mode, the vacuum pump 13 may be started to turn off the indoor fan of the air conditioner 10, so as to directly suck the indoor air into the indoor unit by the vacuum pump 13, thereby dehumidifying the indoor air.
In step S630, if the humidity load value is smaller than the preset humidity value, the vacuum pump 13 of the air conditioner 10 is controlled to be turned off.
In this embodiment, after the above steps are performed, if the humidity load value is reduced to be less than the preset humidity value, which indicates that the current humidity load value has fallen back to the comfortable section, the vacuum pump 13 may be controlled to be turned off to avoid over-drying of the indoor air, and the air conditioner 10 is controlled to exit the dehumidification mode, so as to reduce the air volume entering the indoor unit, and keep the humidity load value in the comfortable section.
Referring to fig. 6, in step S710, a difference between the humidity load value at the current time and the humidity load value at the previous time is calculated to obtain a load difference.
In this embodiment, the current indoor humidity change can be determined by calculating the difference between the humidity load values at two adjacent moments, and if the load difference is large, it indicates that the indoor humidity change is large, the frequency of the vacuum pump 13 is large, more indoor air enters the indoor unit, and the dehumidification strength is large. If the load difference is small, the change of the indoor humidity is small, the operation frequency of the vacuum pump 13 is relatively small, the indoor air entering the indoor unit is relatively small, and the dehumidification force is relatively small.
Step S720, adjusting the operating frequency of the vacuum pump 13 according to the load difference; wherein the load difference corresponds to the operating frequency.
In this embodiment, each load difference corresponds to an operating frequency, and the corresponding operating frequency may be directly called according to the calculated load difference, so as to control the vacuum pump 13 to operate at the operating frequency corresponding to the load difference.
Step S730, calculating a load difference value at the current time and a load difference value at the previous time to obtain a ratio deviation value.
After the load difference is calculated, the load difference at the current moment is divided by the load difference at the previous moment to obtain a ratio deviation value, and the opening degree of the electronic expansion valve can be adjusted according to the ratio deviation value, so that the temperature value of the evaporator 14 can be adjusted.
Step S740, controlling the opening degree of the electronic expansion valve of the air conditioner 10 according to the ratio deviation value, so as to adjust the temperature of the evaporator 14 of the air conditioner 10 to a preset temperature value.
If the temperature value of the evaporator 14 is too high, the water vapor in the indoor air cannot be liquefied, and the dehumidification effect is not good. If the temperature value of the evaporator 14 is lower than zero, the water vapor liquefied in the evaporator 14 is easily frozen, which affects the dehumidification effect, and in order to ensure the dehumidification effect and prevent the evaporator 14 from being frozen, the preset temperature value is generally set to 1 degree, and the deviation value of the ratio is generally also 1.
The opening degree of the electronic expansion valve can be adjusted by the air conditioner to adjust the flow rate of the refrigerant in the evaporator 14, so as to adjust the temperature value of the evaporator 14.
If the deviation value of the ratio is greater than or equal to the preset ratio, the number of increasing steps of the electronic expansion valve is adjusted according to the superheat deviation and the change rate of the superheat deviation, so that the temperature of the evaporator 14 is reduced to a preset temperature value.
If the deviation value of the ratio is greater than or equal to the preset ratio, the current temperature value of the evaporator 14 is considered to be high, and the opening degree of the electronic expansion valve can be increased through the superheat degree deviation and the change rate of the superheat degree deviation, so that the flow rate of the refrigerant in the evaporator 14 is increased, and the temperature of the evaporator 14 is reduced to the preset temperature value.
For example, in the case that the deviation value of the ratio is greater than or equal to the preset ratio, the opening degree of the electronic expansion valve can be adjusted every 20 seconds, the opening degree is increased by 60 steps each time, and the maximum opening degree does not exceed 480 steps.
If the deviation value of the ratio is smaller than the preset ratio, the reduced number of steps of the electronic expansion valve is adjusted according to the supercooling degree deviation and the supercooling degree deviation change rate, so that the temperature of the evaporator 14 is increased to a preset temperature value.
Similarly, if the deviation value of the ratio is smaller than the preset ratio, the current temperature value of the evaporator 14 is considered to be low, and the opening degree of the electronic expansion valve can be reduced through the supercooling degree deviation and the supercooling degree deviation change rate, so that the flow rate of the refrigerant in the evaporator 14 is reduced, and the temperature of the evaporator 14 is increased to the preset temperature value.
For example, in the case that the deviation value of the ratio is smaller than the preset ratio, the opening degree of the electronic expansion valve can be adjusted every 20 seconds, the opening degree is decreased by 60 steps each time, and the maximum opening degree does not exceed 480 steps.
In summary, in the dehumidification control method provided in this embodiment, a humidity deviation value is calculated according to the first humidity value and the second humidity value at different positions, a temperature deviation value is calculated according to the first temperature value and the set temperature value, a humidity load value is calculated according to the humidity deviation value and the temperature deviation value, the air conditioner 10 is controlled to dehumidify under the condition that the humidity load value is greater than the preset humidity value, the operation frequency of the vacuum pump 13 is adjusted according to the load difference value, and the temperature value of the evaporator 14 is adjusted according to the ratio deviation value, so that the dehumidification effect is improved.
Referring to fig. 7, an embodiment of the present invention further provides a dehumidification control apparatus 20 applied to an air conditioner 10, wherein the dehumidification control apparatus 20 includes:
a first obtaining module 21 is configured to obtain a first humidity value of a first height in the room.
Step S100 of the dehumidification control method provided by the embodiment of the invention may be executed by the first obtaining module 21.
A second obtaining module 22, configured to obtain a second humidity value of a second height in the room; wherein the first height is less than the second height.
Step S200 of the dehumidification control method provided by the embodiment of the invention may be executed by the second obtaining module 22.
And the third obtaining module 23 is configured to obtain a first temperature value of a first indoor height.
Step S300 of the dehumidification control method provided by the embodiment of the invention may be executed by the third obtaining module 23.
And the calculating module 24 is configured to calculate the humidity load value according to the first humidity value, the second humidity value and the first temperature value.
Step S400 and its sub-steps of the dehumidification control method provided by the embodiment of the present invention may be executed by the calculation module 24.
And the judging module 25 is used for judging whether the humidity load value is greater than or equal to a preset humidity value.
Step S500 of the dehumidification control method provided by the embodiment of the present invention may be executed by the determination module 25.
And the control module 26 is configured to control the air conditioner 10 to dehumidify if the humidity load value is greater than or equal to the preset humidity value.
Steps S610-S740 of the dehumidification control method provided by the embodiment of the invention may be executed by the control module 26.
In the embodiment of the present invention, the air conditioner 10 includes a controller 12, and the controller 12 may be an integrated circuit chip having signal processing capability. The controller 12 may be a general-purpose processor, and may include a Central Processing Unit (CPU), a single chip Microcomputer (MCU), a Micro Controller Unit (MCU), a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an embedded ARM, and other chips, where the controller 12 may implement or execute the methods, steps, and Logic blocks disclosed in the embodiments of the present invention.
In one possible embodiment, the air conditioner 10 may further include a memory for storing program instructions executable by the controller 12, for example, the dehumidification control apparatus 20 provided by the embodiment of the present application may include at least one of the program instructions stored in the form of software or firmware. The Memory may be a stand-alone external Memory including, but not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Read-Only Memory (EPROM), electrically Erasable Read-Only Memory (EEPROM). The memory may also be integrated with the controller 12, for example, the memory may be integrated with the controller 12 on the same chip.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (13)

1. A dehumidification control method applied to an air conditioner (10), the dehumidification control method comprising:
acquiring a first humidity value of a first indoor height;
acquiring a second humidity value of a second height in the room; wherein the first height is less than the second height;
acquiring a first temperature value of the first height in the room;
calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value;
judging whether the humidity load value is greater than or equal to a preset humidity value or not;
and if the humidity load value is greater than or equal to the preset humidity value, controlling the air conditioner (10) to dehumidify.
2. The dehumidification control method according to claim 1, wherein the step of calculating a humidity load value from the first humidity value, the second humidity value and the first temperature value comprises:
calculating a humidity deviation value according to the first humidity value and the second humidity value;
calculating a temperature deviation value according to the first temperature value and the set temperature value;
and calculating the humidity load value according to the humidity deviation value and the temperature deviation value.
3. The dehumidification control method according to claim 2, wherein the step of calculating a humidity deviation value according to the first humidity value and the second humidity value comprises:
calculating a humidity difference value of the first humidity value and the second humidity value obtained at the current moment;
calculating the square of the humidity difference to obtain a real-time humidity value;
and calculating the real-time humidity value at the current moment and the average value of all calculated real-time humidity values before the current moment to obtain the humidity deviation value.
4. The dehumidification control method according to claim 2, wherein the step of calculating the temperature deviation value according to the first temperature value and the set temperature value comprises:
calculating the difference value between the first temperature value and the set temperature value obtained at the current moment to obtain a real-time temperature value;
and calculating the average value of all the real-time temperature values at the current moment and before the current moment to obtain the temperature deviation value.
5. The dehumidification control method according to claim 1, wherein the step of controlling the air conditioner (10) to dehumidify if the humidity load value is greater than or equal to the preset humidity value comprises:
and controlling the air conditioner (10) to operate in a dehumidification mode, and controlling a vacuum pump (13) of the air conditioner (10) to start.
6. The dehumidification control method according to claim 5, further comprising:
calculating the difference value between the humidity load value at the current moment and the humidity load value at the previous moment to obtain a load difference value;
adjusting the operating frequency of the vacuum pump (13) in dependence on the load difference; wherein the load difference corresponds to the operating frequency.
7. The dehumidification control method according to claim 5, wherein the step of controlling the air conditioner (10) to dehumidify if the humidity load value is greater than or equal to the preset humidity value comprises:
and after the vacuum pump (13) is started, controlling an indoor fan of the air conditioner (10) to stop working.
8. The dehumidification control method according to claim 5, further comprising:
and if the humidity load value is smaller than the preset humidity value, controlling a vacuum pump (13) of the air conditioner (10) to be closed.
9. The dehumidification control method according to claim 1, further comprising:
calculating the difference value between the humidity load value at the current moment and the humidity load value at the previous moment to obtain a load difference value;
calculating the load difference value at the current moment and the load difference value at the previous moment to obtain a ratio deviation value;
and controlling the opening degree of an electronic expansion valve of the air conditioner (10) according to the ratio deviation value, so that the temperature of an evaporator (14) of the air conditioner (10) is adjusted to a preset temperature value.
10. The dehumidification control method according to claim 9, wherein the step of controlling an opening degree of an electronic expansion valve of the air conditioner (10) according to the ratio deviation value to adjust the temperature of the evaporator (14) to a preset temperature value comprises:
and if the deviation value of the ratio is greater than or equal to a preset ratio, adjusting the increasing step number of the electronic expansion valve according to the superheat deviation and the change rate of the superheat deviation, so that the temperature of the evaporator (14) is reduced to the preset temperature value.
11. The dehumidification control method according to claim 9, wherein the step of controlling an opening degree of an electronic expansion valve of the air conditioner (10) according to the ratio deviation value to adjust the temperature of the evaporator (14) to a preset temperature value comprises:
if the deviation value of the ratio is smaller than the preset ratio, the reduced step number of the electronic expansion valve is adjusted according to the supercooling degree deviation and the supercooling degree deviation change rate, so that the temperature of the evaporator (14) is increased to the preset temperature value.
12. A dehumidification control apparatus for an air conditioner (10), the dehumidification control apparatus (20) comprising:
a first acquisition module (21) for acquiring a first humidity value at a first height in the room;
a second acquisition module (22) for acquiring a second humidity value at a second height in the chamber; wherein the first height is less than the second height;
a third obtaining module (23) for obtaining a first temperature value of the first height in the room;
a calculation module (24) for calculating a humidity load value according to the first humidity value, the second humidity value and the first temperature value;
the judging module (25) is used for judging whether the humidity load value is larger than or equal to a preset humidity value or not;
and the control module (26) is used for controlling the air conditioner (10) to dehumidify if the humidity load value is greater than or equal to the preset humidity value.
13. An air conditioner, characterized by comprising a controller (12), wherein the controller (12) is used for executing computer instructions to realize the dehumidification control method according to any one of claims 1 to 11.
CN202110501067.3A 2021-05-08 2021-05-08 Dehumidification control method and device and air conditioner Active CN113091199B (en)

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JP2020070986A (en) * 2018-10-31 2020-05-07 ダイキン工業株式会社 Air conditioner
CN111623413A (en) * 2020-04-29 2020-09-04 海信（山东）空调有限公司 Air conditioner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6084737B1 (en) * 2015-10-06 2017-02-22 木村工機株式会社 Air conditioning system
CN205174521U (en) * 2015-11-26 2016-04-20 华北电力大学（保定） Temperature and humidity governing system based on bathroom vapor concentration
JP2020070986A (en) * 2018-10-31 2020-05-07 ダイキン工業株式会社 Air conditioner
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