CN110671783A - Control method and device for dehumidification of air conditioner, air conditioner and storage medium - Google Patents
Control method and device for dehumidification of air conditioner, air conditioner and storage medium Download PDFInfo
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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
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides a control method and a device for dehumidifying of an air conditioner, the air conditioner and a storage medium, wherein the control method comprises the following steps: when the air conditioner runs for a first preset time in a refrigeration mode, acquiring the temperature of an indoor coil, the ambient temperature and the current of a fan, and determining the difference between the ambient temperature and the temperature of the indoor coil and the current change rate of the current of the fan within a second preset time at intervals of the second preset time; and adjusting the operation parameters of the air conditioner according to the comparison result of the difference value and the preset temperature value and the comparison result of the current change rate and the preset first current change value. The control method provided by the invention has the advantages that on the premise of meeting the refrigeration effect, the operation parameters of the air conditioner are corrected necessarily, unnecessary dehumidification is reduced, the energy efficiency is improved, and meanwhile, the comfort problem caused by over-drying in a room is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling dehumidification of an air conditioner, the air conditioner and a storage medium.
Background
An indoor unit of an air conditioner, particularly an indoor unit of a variable-frequency multi-connected air conditioner, mainly takes indoor refrigeration effect, pipe temperature and pressure as control targets, so that condensation of different degrees can occur on the surfaces of pipelines and fins when the indoor unit operates, and dehumidification is needed during refrigeration operation. However, there is a high possibility that excessive dehumidification may occur during the dehumidification process, and the excessive dehumidification may not only reduce the cooling capacity of the indoor unit, but also cause too low indoor air humidity, which may affect the comfort of users.
Aiming at the problem of controlling the dehumidification degree of the air conditioner, the air conditioner with independent dry and wet treatment is provided in the market at present, but the air conditioner needs to be additionally provided with independent equipment to control the dehumidification degree, so that the cost is increased, and the difficulty of operation control is increased.
Disclosure of Invention
The invention solves the problems that: the problems that the energy consumption of an air conditioner is high and the use comfort of a user is not good are caused by excessive dehumidification caused by poor dehumidification control of the existing air conditioning system.
In order to solve the above problems, the present invention provides a method for controlling dehumidification of an air conditioner, comprising the following steps: when the air conditioner runs for a first preset time in a refrigeration mode, acquiring the temperature of an indoor coil, the ambient temperature and the current of a fan, and determining the difference between the ambient temperature and the temperature of the indoor coil and the current change rate of the current of the fan within a second preset time at intervals of the second preset time; and adjusting the operation parameters of the air conditioner according to the comparison result of the difference value and the preset temperature value and the comparison result of the current change rate and the preset first current change value.
According to the invention, when the air conditioner operates in a refrigerating mode, the temperature of the indoor coil, the ambient temperature and the current of the fan are obtained to represent the condensation state difference of the surfaces of the heat exchange tube and the fin of the indoor unit, so that the dehumidification degree is judged, on one hand, on the premise of meeting the refrigerating effect, the operation parameters of the air conditioner are corrected necessarily, and the problems that the interior of an air-conditioned room is too dry due to too high dehumidification degree and the comfort is poor are avoided; on the other hand, the unnecessary dehumidification process can be reduced, the energy consumption is saved, parts such as a dehumidification valve and the like are not required to be added, the dehumidification cost is reduced, and the operation control process of the air conditioner is simplified.
Optionally, the process of adjusting the operating parameter of the air conditioner specifically includes: comparing the difference between the ambient temperature and the indoor coil temperature to the preset temperature value; comparing the rate of current change to the first preset value of current change when the difference is greater than or equal to the preset value of temperature; and when the current change rate is greater than or equal to the first current change preset value, adjusting the operation parameters of the air conditioner.
According to the invention, the condition of adjusting the operation parameters of the air conditioner is specified by monitoring the difference value delta T between the ambient temperature Ti and the temperature T of the indoor coil pipe under the refrigeration working condition in real time and comparing the current change rate delta I with the temperature preset value Ts, and comparing the delta I with the first current change preset value A1, so that the control precision of correcting a control target is improved, unnecessary dehumidification is reduced, and the energy efficiency is improved.
Optionally, the process of adjusting the operation parameters of the air conditioner specifically further includes: and generating a temperature correction value according to a preset dehumidification degree grade in the air conditioner corresponding to the current change rate, and correcting the target parameter of the air conditioner according to the generated temperature correction value.
According to the invention, different temperature correction values are preset and generated for each grade by presetting the grade of the dehumidification degree, the current change rate delta I is taken as a parameter, and the preliminary judgment is carried out on the degree of the dehumidification degree, so that the control process can be refined, the improvement on the correction precision of the target parameter is facilitated, and the user experience is further improved.
Optionally, the temperature correction value is proportional to the rate of change of the current. This matches with the actual operating conditions of the air conditioner, better controlling dehumidification.
Optionally, the generating a temperature correction value according to the preset dehumidification degree grade in the air conditioner corresponding to the current change rate includes:
comparing the current change rate with a second current change preset value and a third current change preset value in the air conditioner respectively, wherein the first current change preset value is smaller than the second current change preset value, and the second current change preset value is smaller than the third current change preset value;
if the current change rate is smaller than the second current change preset value, determining that the air conditioner is in the first stage of the dehumidification level, and generating the temperature correction value delta T-a-0.1 x (Ti-T);
if the second current change preset value is smaller than the current change rate and the current change rate is smaller than or equal to the third current change preset value, determining that the air conditioner is in a second stage in the dehumidification level, and generating the temperature correction value delta T-b-0.1 x (Ti-T);
if the current change rate is greater than the third current change preset value, determining that the air conditioner is in a third stage of the dehumidification level, and generating the temperature correction value delta T-c-0.1 x (Ti-T),
wherein a, b and c are constants, a is more than b and less than c, Ti is the ambient temperature, and T is the indoor coil temperature.
The invention automatically corrects the target parameter of the control target based on the real-time indoor coil temperature, the ambient temperature and the fan current, so as to regulate and control the dehumidification degree, accurately judges the current dehumidification degree by dividing the dehumidification degree into three grades, and concretizes the mapping relation between the current change rate delta I and the temperature correction value delta T, further improves the control precision, avoids excessive dehumidification in the cold working condition, and achieves the purpose of improving the comfort of the user using the air conditioner.
Optionally, the correcting the target parameter of the air conditioner according to the generated temperature correction value includes: determining a corrected target temperature according to the temperature correction value, and controlling the air conditioner to operate at the corrected target temperature; wherein the corrected target temperature is the sum of the temperature correction value and the target parameter.
The invention controls the air conditioner to operate at the corrected target temperature, so that the frequency of the compressor is automatically reduced to adapt to the corrected target temperature, and after the frequency of the compressor is reduced, the temperature of the heat exchange tube of the indoor unit rises, the temperature of the outlet air rises, and the dehumidification amount drops, thereby avoiding excessive dehumidification.
Optionally, the target parameter is an indoor coil temperature target value or an evaporation temperature target value. The frequency of the compressor can be adjusted by controlling the target value of the temperature of the indoor coil or the target value of the evaporation temperature, so as to achieve the aim of controlling the dehumidification.
Another objective of the present invention is to provide a dehumidification control device for an air conditioner, so as to solve the problems of high energy consumption and poor comfort for users of the air conditioner due to excessive dehumidification caused by poor dehumidification control of the existing air conditioner control device.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control device for dehumidifying of an air conditioner, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of an indoor coil, the ambient temperature, the current of a fan, first preset time and second preset time;
the processing module is used for determining a difference value between the ambient temperature and the indoor coil temperature and calculating a current change rate of the fan current in the second preset time according to the detected fan current;
and the control module is used for controlling and adjusting the operating parameters of the air conditioner according to the comparison result of the difference between the ambient temperature and the temperature of the indoor coil and a preset temperature value and the comparison result of the current change rate and a first preset current change value.
The third objective of the present invention is to provide an air conditioner, so as to solve the problems of high energy consumption and poor comfort for users of the air conditioner due to excessive dehumidification caused by poor dehumidification control of the existing air conditioner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for controlling dehumidification of the air conditioner is implemented.
Compared with the prior art, the control device for dehumidifying the air conditioner, the air conditioner and the control method for dehumidifying the air conditioner have the same advantages, and are not described again.
A fourth objective of the present invention is to provide a computer-readable storage medium for implementing the method for controlling dehumidification of an air conditioner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a computer-readable storage medium, wherein a computer program is stored, and when the computer program is read and executed by a processor, the method for controlling dehumidification of an air conditioner is implemented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dehumidification control device of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for controlling dehumidification of an air conditioner according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Furthermore, the following description, if any, of "first," "second," etc. is used for descriptive purposes only and not for purposes of indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Air conditioners in the prior art are generally used for meeting the comfort requirements of people or the temperature requirements of cold/heat sources, namely realizing the control of room temperature, humidity and wind speed. However, the air conditioner works under the condition that the ambient temperature and the indoor load are changed constantly, and because the components of the system and the environment are interacted and influenced mutually, the operation parameters are difficult to achieve stability, and particularly, the dehumidification process exists under the refrigeration working condition, so that the air conditioner is easy to greatly influence the indoor air humidity. To overcome this problem, a humidity detecting device or a humidity adjusting device is usually added and independently controlled to make the humidity in the air-conditioned room reach a desired standard, but this method not only increases the cost of the air conditioner, but also increases the difficulty of operation control.
In order to solve the problems, the invention provides a control method and device for dehumidification of an air conditioner, the air conditioner and a storage medium, wherein when the air conditioner operates in a refrigerating mode, the temperature of an indoor coil, the ambient temperature and the current of a fan are detected and obtained to represent the condensation state difference of the surfaces of a heat exchange tube and fins of an indoor unit, so that the dehumidification degree is judged, the operation parameters of a control target of the air conditioner are corrected according to the dehumidification degree, and the situations of energy efficiency waste and poor comfort caused by excessive dehumidification are avoided.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling dehumidification of an air conditioner, including the following steps:
s1, after the air conditioner runs for a first preset time T1 in a refrigeration mode, detecting and obtaining the indoor coil temperature T, the ambient temperature Ti and the fan current I in real time, and calculating and determining the difference value delta T between the ambient temperature Ti and the indoor coil temperature T as Ti-T and the current change rate delta I of the fan current I in a second preset time T2 every second preset time T2;
s2, adjusting the operation parameters of the air conditioner according to the comparison result of the difference value delta T between the environment temperature and the indoor coil temperature and the temperature preset value Ts and the comparison result of the current change rate delta I and the first current change preset value A1.
In the indoor unit of the air conditioner, under the same compressor rotating speed, the lower the temperature of an indoor coil pipe is, the lower the air outlet temperature is, and meanwhile, the larger the dehumidification capacity is. In the dehumidification process, water vapor in the air can be attached to the surfaces of fins of the heat exchanger, so that the air flow resistance is increased, the air quantity is reduced, and the motor power and the fan current are increased. Therefore, the larger the dehumidification amount is, the more serious the fin condensation is, the larger the resistance is, and the larger the fan current is, so that the dehumidification degree of the air conditioner can be judged through the change of the fan current, and the operation parameters of the air conditioner are adjusted according to the dehumidification degree, so that the humidity in the air-conditioned room meets the use comfort of a user. Of course, the comfort of the user for the air conditioner is more important than the humidity requirement, and therefore, the cooling effect of the air conditioner is ensured before the humidity requirement is met.
According to the control method for dehumidifying the air conditioner, provided by the embodiment of the invention, after the air conditioner operates for a period of time in a refrigerating mode, the difference value delta T between the temperature of the indoor coil and the ambient temperature is used as a parameter for representing the refrigerating effect of the air conditioner, the difference value delta T is compared with a preset temperature value Ts to judge whether a better refrigerating effect is achieved, and after the preset refrigerating effect is achieved, the dehumidifying degree is judged; and taking the current change rate delta I of the fan current in the second preset time as another parameter, and judging whether the condition of excessive dehumidification is met or not, so as to correct the target parameter and control the operation parameter of the air conditioner. On one hand, the control method performs necessary correction on the operation parameters of the air conditioner on the premise of meeting the refrigeration effect, avoids the problems of over-drying in an air conditioning room and poor comfort caused by over-high dehumidification degree, and improves the user experience; on the other hand, the unnecessary dehumidification process can be reduced, the energy consumption is saved, parts such as a dehumidification valve and the like are not required to be added, the dehumidification cost is reduced, and the operation control process of the air conditioner is simplified.
Specifically, in step S1, after the air conditioner operates in the cooling mode for a first preset time T1, the coil temperature T, the fan current I, and the ambient temperature Ti of the indoor unit are detected in real time, and the dehumidification and condensation degrees of the surfaces of the heat exchange tube and the fins are determined through an internal algorithm. The reason why the operation is performed after t1 is that the temperature in the room will reach a proper state after the air conditioner is operated for a certain period of time. In embodiments of the present invention, a temperature sensor and a current sensor may be utilized to detect indoor coil temperature, ambient temperature, and fan current.
The flow of step S1 can be refined as:
s10, the air conditioner enters a refrigeration mode, and after the air conditioner continuously runs for T1 time, the temperature T of the detection coil, the current I of the fan and the ambient temperature Ti are obtained through real-time detection;
and S11, calculating the difference value delta T between the ambient temperature and the indoor coil temperature and the current change rate delta I of the fan current I every second preset time T2. That is, the second preset time t2 is used as a detection period, the current environment temperature, the current indoor coil temperature and the current fan current of a plurality of detection periods are detected simultaneously, and the current environment temperature, the current indoor coil temperature and the current fan current of different detection periods are detected 30 seconds before the detection period runs as data acquisition time, and after every second preset time t2 is finished and a next detection period is started, the temperature average value and the current average value of the previous 30 seconds of the next detection period are used as the current environment temperature, the current indoor coil temperature and the current fan current of the next detection period.
And the delta T is the difference between the ambient temperature Ti and the indoor coil temperature T in the same detection period. And Δ I is (In +1-In)/T2, Δ I is the difference between the fan currents In the two adjacent detection periods, In +1 is the fan current In the current period, In is the fan current In the previous period, and at this time, the fan current In +1 In the current period, the ambient temperature Ti and the indoor coil temperature T are In the same detection period.
In the embodiment of the invention, the first preset time t1 is determined by the response time and the stabilization time of the air conditioner after the control target is adjusted, and the value range of t1 is 8-12min, preferably t1 is 10 min. The preset temperature value Ts is used for determining the cooling effect of the air conditioner, and generally speaking, when the difference between the coil temperature of the indoor unit and the ambient temperature is 10-15 ℃, the cooling effect of the air-conditioned room is better, so when the value of Ts is in the range of 10-15 ℃, it is preferable that Ts is 13 ℃. The second preset time t2 value is determined according to the heat exchanger characteristics (heat exchange capacity, fin hydrophilic characteristics and the like) of a specific indoor unit, and can be set by a worker according to the actual working environment of the air conditioning system and the test actual value of the air conditioner at the design stage. Similarly, the first preset current variation value a1 is determined by the characteristics (power and current characteristics) of the specific motor, and can be set by the operator according to the actual working environment of the air conditioning system and the actual test values at the design stage of the air conditioner.
Referring to fig. 3, in step S2, the adjusting the operation parameters of the air conditioner according to the comparison result between the difference Δ T between the ambient temperature and the temperature of the indoor coil and the preset temperature Ts, and the comparison result between the current change rate Δ I and the preset first current change value a1 specifically includes:
s20, comparing the difference value delta T between the ambient temperature and the indoor coil temperature with a preset temperature value Ts;
s21, when the delta T is larger than or equal to Ts, the refrigerating effect of the air conditioner is met, and then the current change rate delta I is compared with a first current change preset value A1 to judge whether the dehumidification is excessive; if the delta T is less than Ts, the refrigeration effect of the air conditioner is not achieved, the dehumidification degree is not judged, the steps S21 and S21 are repeated, and the delta T is continuously compared with the Ts until the conditions are met;
s22, when the delta I is larger than or equal to A1, the dehumidification excess condition is met, necessary correction is carried out on the target parameter of the control target, and then the operation parameter of the air conditioner is adjusted, so that the humidity in the air-conditioned room is in a comfortable range; if Δ I is smaller than a1, it means that the dehumidification degree is not excessive and is currently in a better humidity range on the premise of satisfying the refrigeration effect of the air conditioner, and the operation parameters of the air conditioner remain unchanged without correcting the control target.
According to the control method provided by the embodiment of the invention, the detection of the ambient temperature Ti, the indoor coil temperature T and the current change rate delta I of the fan current is divided into a plurality of periods, the difference value delta T between the ambient temperature Ti and the indoor coil temperature T under the refrigeration working condition and the current change rate delta I are monitored in real time, the delta T is compared with the temperature preset value Ts, and the delta I is compared with the first current change preset value A1, so that the adjustment condition of the operation parameter of the air conditioner is specified, the control precision of correcting the control target can be further improved, the unnecessary dehumidification is reduced, and the energy efficiency is improved.
In addition, the adjusting of the operation parameters of the air conditioner in the step S2 includes:
and S23, generating a temperature correction value according to the preset dehumidification degree grade in the air conditioner corresponding to the current change rate, and correcting the target parameter of the air conditioner according to the generated temperature correction value.
Specifically, when Δ I ≧ A1, the air conditioner dehumidifies excessively, so it is necessary to adjust the air conditioner operating parameters to adjust the humidity in the conditioned room. According to the embodiment of the invention, different temperature correction values are preset and generated for each grade through presetting the dehumidification degree grade, the current change rate delta I is taken as a parameter, and the preliminary judgment is carried out on the dehumidification degree, so that the correction conditions of the air conditioner on the target parameter are different when the air conditioner is in different dehumidification grades, the control process is refined, the improvement on the correction precision of the target parameter is facilitated, and the user experience is further improved.
It can be understood that after the condition of excessive dehumidification is satisfied, the change value of the motor current is further judged, because the larger the dehumidification amount is, the more the condensed water of the fins is, the more the condensed water is attached to the surface of the product, the larger the wind resistance is, the faster the motor current is increased, and the judgment can be realized according to the principle: the larger the motor current change (the larger the current change rate Δ I), the more the fin condensation water is, that is, the larger the dehumidification amount of the air conditioner is, the higher the dehumidification degree grade is, the more the control target needs to be adjusted, the larger the correction of the target parameter is, that is, the better the dehumidification is controlled to match with the actual operation condition of the air conditioner, and the generated temperature correction value is in direct proportion to the current change rate.
Specifically, the generating of the temperature correction value according to the dehumidification degree grade preset in the air conditioner corresponding to the current change rate includes:
comparing the current change rate with a second current change preset value A2 and a third current change preset value A3 in the air conditioner respectively, wherein the first current change preset value A1 is smaller than the second current change preset value A2, and the second current change preset value A2 is smaller than the third current change preset value A3, namely, A1 is more than A2 is more than A3;
if the current change rate is smaller than a second current change preset value, namely, the delta I is smaller than A2, the air conditioner is judged to be in the first stage of the dehumidification degree grade, and the generated temperature correction value is delta T-a-0.1 (Ti-T);
if the second current change preset value is smaller than the current change rate and the current change rate delta I is smaller than the third current change preset value, namely, delta I is more than A2 and less than or equal to A3, the air conditioner is judged to be in the second stage of the dehumidification degree grade, and the generated temperature correction value is delta T-b-0.1 (Ti-T);
if the current change rate is greater than a third current change preset value, namely delta I is greater than A3, the air conditioner is judged to be in the third stage of the dehumidification degree grade, the generated temperature correction value is delta T-c-0.1 (Ti-T),
and a, b and c are preset constants, and are confirmed through the design stage of the air conditioner according to actual measurement in different dehumidification condensation states, wherein a is more than b and less than c.
In the embodiment of the invention, when the air conditioner operates in a refrigeration mode, the current dehumidification degree grade of the air conditioner is determined by judging the range of the current change rate under the condition of simultaneously meeting the refrigeration effect and excessive dehumidification degree, and a corresponding temperature correction value is generated according to the dehumidification degree grade, so that the operation parameters of the air conditioner are adjusted. The parameter of control target is corrected automatically based on real-time indoor coil temperature, ambient temperature and fan current like this to this regulation and control dehumidification degree can avoid excessive dehumidification in the cold operating mode, reaches the purpose that improves the user and uses the travelling comfort of air conditioner. The dehumidification degree is divided into three levels, so that the current dehumidification degree can be accurately judged, the mapping relation between the current change rate delta I and the temperature correction value delta T is specified, the air conditioner is controlled according to different dehumidification degree levels to correct target parameters, and the dehumidification degree control accuracy of the air conditioner is effectively improved.
TABLE 1 mapping of Current Change Rate, dehumidification grade, and temperature correction
| Rate of change of current Δ I | Grade of degree of dehumidification | Temperature correction value Delta T |
| ΔI≤A1 | 1 | a-0.1*(Ti-T) |
| A1＜ΔI≤A2 | 2 | b-0.1*(Ti-T) |
| ΔI＞A2 | 3 | c-0.1*(Ti-T) |
In order to better adjust the target parameter of the air conditioner control target, the correcting the target parameter of the air conditioner according to the generated temperature correction value comprises the following steps: according to the temperature correction value, calculating and determining a corrected target temperature, and controlling the air conditioner to operate at the corrected target temperature; wherein, the corrected target temperature is the sum of the temperature correction value and the numerical value of the target parameter.
Specifically, when the current target parameter is corrected, the current target parameter is directly added or subtracted, if the current evaporation temperature is taken as a control target, and the control target parameter of the current evaporation temperature is X, the target parameter is corrected after the dehumidification degree excess condition is met, the corrected correction target temperature is changed into X + delta T, the air conditioner operates at the corrected target temperature X + delta T after the evaporation temperature is corrected, at the moment, the frequency of the compressor is automatically reduced to adapt to the corrected evaporation temperature control target, after the frequency of the compressor is reduced, the temperature of a heat exchange tube of the indoor unit is increased, the air outlet temperature is increased, and the dehumidification amount is reduced, so that excessive dehumidification is avoided.
In an embodiment of the present invention, the target parameter is an indoor coil temperature target value or an evaporation temperature target value. The frequency of the compressor can be adjusted by controlling the target value of the temperature of the indoor coil or the target value of the evaporation temperature, so as to achieve the aim of controlling the dehumidification.
Referring to fig. 2, another embodiment of the present invention provides a dehumidification controlling apparatus 300 for an air conditioner, including:
an obtaining module 310, configured to obtain an indoor coil temperature, an ambient temperature, a fan current, and a first preset time and a second preset time;
the processing module 320 is configured to determine a difference between the ambient temperature and the indoor coil temperature, and calculate a current change rate of the fan current within a second preset time according to the detected fan current;
the control module 330 is configured to control and adjust an operation parameter of the air conditioner according to a comparison result between a difference between the ambient temperature and the temperature of the indoor coil and a preset temperature value, and a comparison result between a current change rate and a first preset current change value.
According to the control device 300 for dehumidifying air conditioner provided by the embodiment of the invention, after the air conditioner operates for a period of time in a refrigerating mode, the difference value delta T between the temperature of the indoor coil and the ambient temperature is taken as a parameter for representing the refrigerating effect of the air conditioner, the difference value delta T is compared with the preset temperature value Ts, whether a better refrigerating effect is achieved or not is judged, and after the preset refrigerating effect is achieved, the dehumidifying degree is judged; and taking the current change rate delta I of the fan current in the second preset time as another parameter, and judging whether the condition of excessive dehumidification is met or not, so as to control the operation parameters of the air conditioner and correct the target parameters. On the premise of meeting the refrigeration effect, the operation parameters of the air conditioner are corrected necessarily, so that the problem that the air conditioner is too dry in a room and the comfort is not good due to too high dehumidification degree is solved.
The embodiment of the invention also provides a control device for dehumidifying the air conditioner, which comprises a memory and a processor, wherein:
the memory is for storing a computer program. In embodiments of the present invention, the Memory may include a computer system readable medium in the form of volatile Memory, such as Random Access Memory (RAM) and/or cache Memory.
The processor is used for realizing the control method for dehumidifying the air conditioner when executing the computer program.
Another embodiment of the present invention further provides an air conditioner, including a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for controlling dehumidification of an air conditioner as described above is implemented. It sets up to have as above the controlling means 300 of air conditioner dehumidification, when accessible air conditioner refrigeration operation, detects its indoor coil pipe temperature, ambient temperature and fan current, comes the condensation state difference on characterization indoor set heat exchange tube, fin surface to judge the dehumidification degree, and revise the operating parameter of air conditioner control target according to the dehumidification degree, avoid appearing excessive dehumidification and cause the extravagant, the not good condition of travelling comfort of efficiency.
Other embodiments of the present invention further provide a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the method for controlling dehumidification of an air conditioner as described above is implemented.
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 (10)
1. A control method for dehumidifying of an air conditioner is characterized by comprising the following steps:
when the air conditioner runs for a first preset time in a refrigeration mode, acquiring the temperature of an indoor coil, the ambient temperature and the current of a fan, and determining the difference between the ambient temperature and the temperature of the indoor coil and the current change rate of the current of the fan within a second preset time at intervals of the second preset time;
and adjusting the operation parameters of the air conditioner according to the comparison result of the difference value and the preset temperature value and the comparison result of the current change rate and the preset first current change value.
2. The method for controlling dehumidification of an air conditioner according to claim 1, wherein the process of adjusting the operating parameters of the air conditioner specifically comprises:
comparing the difference value with the preset temperature value;
comparing the rate of current change to the first preset value of current change when the difference is greater than or equal to the preset value of temperature;
and when the current change rate is greater than or equal to the first current change preset value, adjusting the operation parameters of the air conditioner.
3. The method for controlling dehumidification of an air conditioner according to claim 2, wherein the process of adjusting the operating parameters of the air conditioner further comprises:
and generating a temperature correction value according to a preset dehumidification degree grade in the air conditioner corresponding to the current change rate, and correcting the target parameter of the air conditioner according to the generated temperature correction value.
4. The method of claim 3, wherein the temperature correction value is proportional to the rate of change of the current.
5. The method for controlling dehumidification of an air conditioner according to claim 3, wherein the generating of the temperature correction value according to the level of dehumidification preset in the air conditioner corresponding to the current change rate comprises:
comparing the current change rate with a second current change preset value and a third current change preset value respectively, wherein the first current change preset value is smaller than the second current change preset value, and the second current change preset value is smaller than the third current change preset value;
if the current change rate is smaller than the second current change preset value, determining that the air conditioner is in the first stage of the dehumidification level, and generating the temperature correction value delta T-a-0.1 x (Ti-T);
if the second current change preset value is smaller than the current change rate and the current change rate is smaller than or equal to the third current change preset value, determining that the air conditioner is in a second stage in the dehumidification level, and generating the temperature correction value delta T-b-0.1 x (Ti-T);
if the current change rate is greater than the third current change preset value, determining that the air conditioner is in a third stage of the dehumidification level, and generating the temperature correction value delta T-c-0.1 x (Ti-T),
wherein a, b and c are constants, a is more than b and less than c, Ti is the ambient temperature, and T is the indoor coil temperature.
6. The method for controlling dehumidification of an air conditioner according to claim 3, wherein the correcting the target parameter of the air conditioner according to the generated temperature correction value comprises:
determining a corrected target temperature according to the temperature correction value, and controlling the air conditioner to operate at the corrected target temperature;
wherein the corrected target temperature is the sum of the temperature correction value and the target parameter.
7. The method as claimed in any one of claims 3 to 6, wherein the target parameter is a target indoor coil temperature or an evaporation temperature.
8. A control device for dehumidifying of an air conditioner, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of an indoor coil, the ambient temperature, the current of a fan, first preset time and second preset time;
the processing module is used for determining a difference value between the ambient temperature and the indoor coil temperature and calculating a current change rate of the fan current in the second preset time according to the detected fan current;
and the control module is used for controlling and adjusting the operating parameters of the air conditioner according to the comparison result of the difference between the ambient temperature and the temperature of the indoor coil and a preset temperature value and the comparison result of the current change rate and a first preset current change value.
9. An air conditioner comprising a computer-readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for controlling dehumidification of an air conditioner according to any one of claims 1 to 7 is implemented.
10. A computer-readable storage medium, wherein a computer program is stored, which when read and executed by a processor, implements the method of controlling dehumidification of an air conditioner according to any one of claims 1 to 7.
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