CN112240627B - Air conditioner control method and air conditioner - Google Patents
Air conditioner control method and air conditioner Download PDFInfo
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- CN112240627B CN112240627B CN201910641237.0A CN201910641237A CN112240627B CN 112240627 B CN112240627 B CN 112240627B CN 201910641237 A CN201910641237 A CN 201910641237A CN 112240627 B CN112240627 B CN 112240627B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner control method, which comprises the following steps: receiving sampling data of the detection module to obtain a real-time surface dust deposition state of the indoor heat exchanger; and when the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, dynamically controlling the air conditioner to operate according to the real-time surface dust deposition state. An air conditioner is also disclosed. The invention judges the influence of the surface dust deposition of the indoor heat exchanger on the heat exchange efficiency according to the relation between the real-time surface dust deposition state of the indoor heat exchanger and the preset critical state, dynamically and automatically adjusts the refrigeration cycle of the air conditioner based on the judgment result, ensures that the air conditioner can maintain the normal air conditioning effect under the condition of the surface dust deposition of the indoor heat exchanger, meets the user requirement and simultaneously avoids the problem that the indoor unit cannot produce cold air or hot air. After the user cleans the indoor heat exchanger, the indoor heat exchanger can be dynamically restored to a set control mode, and intelligent compensation is carried out when the dust deposition state on the surface of the indoor heat exchanger is serious again.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a control method of an air conditioner and the air conditioner applying the control method.
Background
At present, all indoor units of air conditioners are provided with filter screens so as to prevent impurities such as dust and the like from entering an indoor unit shell and depositing on an indoor unit heat exchanger. Dust entering the indoor unit shell is easy to breed bacteria and cause secondary pollution on one hand, and is easy to deposit on the indoor unit heat exchanger on the other hand, so that the heat exchange effect of the indoor unit heat exchanger is influenced; and at the same time, the air supply effect of the indoor fan may be deteriorated. However, in the use process in the last time, the dirty blockage of the heat exchanger of the indoor unit cannot be completely avoided.
In the prior art, aiming at the filth blockage control of an indoor unit heat exchanger of an air conditioner, various control methods for detecting the filth blockage of the air conditioner are designed and proposed. For example, the power of an indoor fan or an outdoor fan is detected and compared with a power reference when the air conditioner is not dirty and blocked, and whether the air conditioner is dirty and blocked is judged according to the power variation of the fan. Or as in the scheme disclosed in the chinese patent application (CN 105115099A), the operation parameters of the motor are obtained during the operation of the air conditioner, the real-time power of the motor is obtained according to the voltage and the current of the motor, the ambient humidity and the frequency of the compressor are further obtained, the first filth blockage correction value and the second filth blockage correction value are obtained according to the preset humidity-frequency correction function and the preset input voltage correction function, and the real-time power is compensated according to the first filth blockage correction value and the second filth blockage correction value, so as to determine whether the filth blockage occurs in the air conditioner. However, in any control method, the purpose of the control is to remind the user to clean, and if the user does not clean the air conditioner for various reasons, the performance of the air conditioner is reduced, and the problem that the air conditioner cannot be cooled at all may occur in some special cases.
Disclosure of Invention
The invention discloses an air conditioner control method aiming at the problem of performance reduction of an air conditioner when an indoor heat exchanger is dirty and blocked in the prior art, which comprises the following steps: receiving sampling data of the detection module to obtain a real-time surface dust deposition state of the indoor heat exchanger; and when the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, dynamically controlling the air conditioner to operate according to the real-time surface dust deposition state.
In another aspect, the invention discloses an air conditioner, which applies an air conditioner control method, the air conditioner control method comprising the following steps: receiving sampling data of the detection module to obtain a real-time surface dust deposition state of the indoor heat exchanger; and when the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, dynamically controlling the air conditioner to operate according to the real-time surface dust deposition state.
Compared with the prior art, the method and the device have the advantages that the influence of the surface dust deposition degree of the indoor heat exchanger on the heat exchange efficiency is judged according to the relation between the real-time surface dust deposition state of the indoor heat exchanger and the preset critical state, main components in the refrigeration cycle of the air conditioner, such as an indoor fan, a compressor and the like, are dynamically and automatically adjusted based on the judgment result, the normal air conditioning effect of the air conditioner can be maintained under the condition that the surface dust deposition of the indoor heat exchanger occurs, the user requirements are met, and meanwhile the problem that cold air or hot air cannot be generated by an indoor unit is avoided. After the user cleans the indoor heat exchanger, the indoor heat exchanger can be dynamically restored to a set control mode, and intelligent compensation is carried out when the dust deposition state on the surface of the indoor heat exchanger is serious again.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 2 is a flow chart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 3 is a flow chart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 4 is a flowchart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 5 is a flowchart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 6 is a flow chart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 7 is a flowchart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 8 is a flowchart illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 9 is a schematic illustration of an exemplary calibration curve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
The terms "first," "second," "third," and the like in the description and in the claims, and in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. One skilled in the art will appreciate that the embodiments described herein can be combined with other embodiments.
As shown in fig. 1, the air conditioner control method disclosed in the present embodiment includes the steps of:
and receiving sampling data of the detection module to obtain the dust deposition state on the surface of the heat exchanger.
And when the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, dynamically controlling the air conditioner to operate according to the real-time surface dust deposition state.
Specifically, the sources of contaminants on the surfaces of indoor heat exchangers are largely classified into dust sources for outdoor environments and dust sources for indoor environments. The dust source of the outdoor environment, i.e. the atmospheric dust, is the pollutant which is infiltrated into the shell of the indoor unit of the air conditioner along with the air when the air conditioner is used and operated, and comprises natural dust in the air and artificial dust generated by activities. Because the concentration of natural dust and the concentration of artificial dust contained in air in various places are different, the concentration difference of outdoor environment dust sources is very large, even if the air conditioner is used in the same place for a long time, the fluctuation range is greatly larger than the parameters of temperature, humidity and the like along with the time difference. The outdoor environmental dust source also includes microbial particles. These microbial particles are not visible and are usually attached to dust particles. Another major source of indoor heat exchanger surface contaminants for air conditioners is the source of indoor environmental dust, including people and building surfaces, dust generated by the operation of indoor equipment. Completely different from the prior art, in the invention, the operation of the air conditioner is automatically and accurately dynamically controlled according to the surface dust deposition state of the indoor heat exchanger based on the detected surface dust deposition state of the indoor heat exchanger, the heat exchange effect loss caused by the surface dust deposition is compensated, and the control effect of the air conditioner is improved.
The dust accumulation state of the outdoor environment dust source and the indoor environment dust source on the surface of the indoor heat exchanger is detected. In this embodiment, a detection module is disposed on the air conditioner, and the detection module is preferably disposed on the air inlet side of the indoor heat exchanger of the air conditioner, and the dust deposition state on the surface of the indoor heat exchanger can be obtained by monitoring the change of the dust deposition amount at this position. In one case, the detection may be a pressure sensor; for example, the capacitive pressure sensor is arranged on the surface of the indoor heat exchanger, such as the side near the air inlet. Under an ideal cleaning state, the detection pressure of the detection module is small because no dust is accumulated; as the air conditioning apparatus is used, the amount of dust accumulation rises. The weight of accumulated dust enables a metal film in the capacitance type pressure sensor to feel pressure and deform, so that capacitance formed between the two electrodes changes, a received pressure detection value also changes, and the dust accumulation state on the surface of the indoor heat exchanger is further obtained.
In order to increase the data processing speed of the air conditioner controller, it is preferable to establish a one-to-one correspondence relationship between the pressure detection value and the state of dust deposition on the surface of the indoor heat exchanger. When the pressure detection value meets the set condition, the stored dust deposition state on the surface of the indoor heat exchanger can be directly called. In particular, a simulated experimental environment can be created in which artificial dust is blown across the heat exchanger surface where the pressure sensors are located at a given wind speed. The particle size of artificial dust is set larger than that of atmospheric dust, including dust, carbon black, and short fibers. The air conditioner is formed according to a certain proportion, namely the air conditioner simulates the use environment of an air-conditioned room. When the dust deposition state on the surface of the indoor heat exchanger reaches a certain thickness, the current dust deposition state may affect the running state of the air conditioner, and the intervention control on the running state of the air conditioner is realized in advance, automatically and intelligently, so that the condition that the air conditioner does not send cold air and hot air is avoided.
In the running process of the air conditioner, if the pressure detection value received by the controller is larger than or equal to a preset pressure value, the surface dust deposition state of the indoor heat exchanger is judged to exceed a preset critical state, and the air conditioner is further dynamically controlled to run according to the real-time surface dust deposition state. The dynamic control refers to the air parameters of the air-conditioning room and the set operation parameters of the user according to the real-time surface dust deposition state, and continuously and dynamically adjusts the main components of the refrigeration system, such as the rotating speed of an indoor fan and the operation frequency of a compressor, so as to compensate the loss of the heat exchange effect caused by the dust deposition on the surface of the indoor heat exchanger.
Besides the pressure sensor, the dust deposition state on the surface of the indoor heat exchanger can be estimated by a light sensor arranged at the air return opening of the air conditioner or by detecting the filtering efficiency at the air return opening of the air conditioner. However, both of these methods are indirect estimation methods, and the test accuracy is low.
The air conditioner control method disclosed in the above embodiment determines the influence of the dust deposition on the surface of the indoor heat exchanger on the heat exchange efficiency according to the relationship between the real-time dust deposition state of the indoor heat exchanger and the preset critical state, and dynamically and automatically adjusts the main components in the refrigeration cycle of the air conditioner based on the determination result, so as to ensure that the air conditioner can maintain a normal air conditioning effect under the condition that the dust deposition on the surface of the indoor heat exchanger occurs, meet the user demand, and avoid the problem that the indoor unit cannot produce cold air or hot air. After the user cleans the indoor heat exchanger, the indoor heat exchanger can be dynamically restored to a set control mode, and intelligent compensation is carried out when the dust deposition state on the surface of the indoor heat exchanger is serious again.
Referring to fig. 2, which is a flowchart illustrating a preferred embodiment of the air conditioner control method, when the real-time surface dust deposition state of the indoor heat exchanger detected by the detection module exceeds a preset critical state, the air conditioner is dynamically controlled to operate in the following manner.
First, before the air conditioner leaves the factory, a storage module of the controller stores a detection parameter corresponding to a first critical state, for example, if a pressure sensor is used for detection, the detection parameter corresponding to the first critical state is a preset pressure value. If the sampling data of the detection module, namely the real-time detection value of the pressure sensor is greater than the preset pressure value corresponding to the first critical state, the dirty and blockage condition of the indoor heat exchanger is serious. However, it is understood that during the use of the air conditioner, unexpected situations may occur, such as dust deposition in the air conditioner housing due to movement and the like, a situation that the real-time surface dust deposition state of the indoor heat exchanger exceeds the first critical state may be determined in a short time, and if the control is performed according to the detection result, misoperation or unnecessary intervention may be caused, and additional energy consumption is caused. Therefore, as shown in fig. 2, it is preferable that the first timer is controlled to start timing when it is determined that the real-time surface dust deposition state exceeds the first critical state; and when the timing of the first timer reaches a first effective timing period and the real-time surface dust deposition state exceeds a first critical state in the first effective timing period, determining that the surface dust deposition state of the indoor heat exchanger is serious. And simultaneously changing the working states of the indoor fan and the compressor, controlling the indoor fan to operate according to a first correction wind speed, and controlling the compressor to operate according to a first correction frequency, wherein the first correction wind speed and the first correction frequency are respectively more than or equal to a set operation wind speed and a set operation frequency. The first effective timing period is preferably set to be 30 minutes to 1 hour, a plurality of values are continuously sampled at equal intervals in the first effective timing period, if all actual detection values are larger than preset pressure values corresponding to the first critical state, the real-time surface dust deposition state is judged to exceed the first critical state, the compressor is controlled by adopting higher frequency, and the indoor fan is driven to work at higher working rotating speed until the highest frequency and the highest rotating speed are maintained, so that the compensation for the air conditioning capacity is formed. If the compressor is operated at the highest frequency of the current set mode or the indoor fan is operated at the highest rotating speed of the current set mode, the highest frequency and the highest rotating speed are kept unchanged, and therefore air conditioning effect compensation is carried out in the maximum category of air conditioning capacity.
When a user uses the air conditioner, even if the user knows that the dust deposition amount of the indoor heat exchanger may affect the air conditioning capacity, the user may not or unwillingly clean the air conditioner in time for various reasons, if the dynamic control process is maintained all the time, the overall energy consumption of the air conditioner is remarkably increased, and in order to optimize the overall energy consumption in the process of executing the dynamic control, as shown in fig. 3, after the indoor fan is controlled to operate according to the first correction wind speed, and the compressor operates according to the first correction frequency, the second timer is controlled to start timing at first. And when the second timer reaches a second effective timing period, controlling the indoor fan and the compressor to respectively resume running according to the set running wind speed and the set running frequency. And meanwhile, a third timer starts to time, when the timing of the third timer reaches a third effective timely period, the indoor fan is controlled to operate again according to the first correction air speed, the compressor is controlled to operate according to the first correction frequency, and the process is repeated until the real-time surface integration dust deposition state is lower than the first critical state. The second active timing cycle may be set to 2 hours, and the third active timing cycle may be set to 20 minutes.
An alternative arrangement of the first corrected wind speed and the first correction frequency is that the first corrected wind speed is the sum of the set operating wind speed and a wind speed correction value, and the first correction frequency is the sum of the set operating frequency and a frequency correction value. The wind speed correction value and the frequency correction value may be pre-stored fixed set values, e.g., the wind speed correction value may be set to 100RPM and the frequency correction value may be set to +10 Hz.
Another optional setting mode of the first corrected wind speed and the first correction frequency is that if the set operating wind speed is the set operating wind speed corresponding to the low wind gear, the first corrected wind speed is the set operating wind speed corresponding to the medium wind gear; if the set operating wind speed is the set operating wind speed corresponding to the middle wind gear, the first corrected wind speed is the set operating wind speed corresponding to the high wind gear; and if the set operating wind speed is the set operating wind speed corresponding to the high wind gear, the first corrected wind speed is the set operating wind speed corresponding to the high wind gear. Namely, the first gear wind speed is correspondingly increased. Of course, if other gears are set, such as mute, etc., the rule of increasing the first gear is followed. The first correction frequency is the sum of the set running frequency and a frequency correction value, wherein the frequency correction value is the product of the set frequency increasing rate and the current timing time of the second timer. If the air conditioner is in a cooling mode, the set frequency increasing rate can be set to be +1 Hz/hour, and the frequency correction value does not exceed 10 Hz. If the heating mode is adopted, the set frequency increasing rate can be set to be +2 Hz/hour, and the frequency correction value does not exceed 10 Hz.
In a more preferable mode, as shown in fig. 4 and 5, the first corrected wind speed and the first corrected frequency are precisely generated by sampling the operation mode of the air conditioner and the current indoor temperature. Specifically, if the cooling mode is currently in use and the current indoor temperature is greater than or equal to the first set temperature, the first corrected wind speed is the sum of the set operating wind speed and a first wind speed correction value, and the first corrected frequency is the sum of the set operating frequency and a first frequency correction value, wherein the first wind speed correction value is the product of the set operating wind speed and a first wind speed correction coefficient. When the indoor temperature is higher than or equal to the first set temperature, the temperature of the current air-conditioned room is higher, the air speed of the indoor fan and the frequency of the compressor are controlled to be increased simultaneously, and heat exchange loss caused by the indoor heat exchanger is compensated, so that the indoor environment temperature is ensured to be reduced to a comfortable temperature interval as soon as possible. The first wind speed correction factor may be set to 5%, the first frequency correction value may be set to +5Hz, and the first set temperature may be a value within a numerical range of 26 degrees celsius to 28 degrees celsius.
And if the current indoor temperature is greater than or equal to the second set temperature and less than the first set temperature in the cooling mode, the first corrected wind speed is equal to the set running wind speed. When the indoor temperature is greater than or equal to the second set temperature and less than the first set temperature, the temperature of the current air-conditioned room is in an interval which is more suitable or slightly lower than the suitable temperature, and under the condition of comfortable air-conditioned room environment or slightly lower than the suitable temperature, the operation does not generate large fluctuation according to the current parameters, and the wind speed and the compressor of the indoor fan can be preferably not compensated for the purpose of saving energy consumption. The second set point temperature may be within a range of values from 20 degrees celsius to 22 degrees celsius.
And if the current indoor temperature is less than or equal to the third set temperature, the first corrected wind speed is the sum of the set running wind speed and a second wind speed correction value, the first corrected frequency is the sum of the set running frequency and a second frequency correction value, and the second wind speed correction value is the product of the set running wind speed and a second wind speed correction coefficient. When the indoor temperature is lower than or equal to the third set temperature, the temperature of the current air-conditioned room is indicated to be lower, the air speed of the indoor fan and the frequency of the compressor are controlled to be increased simultaneously, and heat exchange loss caused by the indoor heat exchanger is compensated, so that the indoor environment temperature is ensured to be increased to a comfortable temperature interval as soon as possible. The second wind speed correction coefficient may be set to 10%, and the second frequency correction value may be set to +10 Hz. The third set point temperature may be a value within a numerical range of 5 degrees celsius to 10 degrees celsius.
And if the current indoor temperature is in the heating mode, and the current indoor temperature is less than or equal to the second set temperature and greater than the third set temperature, the first corrected wind speed is the sum of the set operating wind speed and a third wind speed corrected value, the first corrected frequency is the sum of the set operating frequency and a third frequency corrected value, and the third wind speed corrected value is the product of the set operating wind speed and a third wind speed corrected coefficient. When the indoor temperature is less than or equal to the second set temperature and greater than the third set temperature, for example, within the range of 10 ℃ to 20 ℃, it is indicated that the temperature of the current air-conditioned room is relatively low, but the degree of deviation from the comfortable interval is relatively low, the control simultaneously improves the air speed of the indoor fan and the frequency of the compressor, and the heat exchange loss caused by the indoor heat exchanger is compensated. The third wind speed correction coefficient may be set to 8%, and the third frequency correction value may be set to +5 Hz.
The first set temperature, the second set temperature and the third set temperature are all optimized values, and during actual setting, the setting can be performed according to an actual use area, and only the condition that the first set temperature, the second set temperature and the third set temperature are decreased in sequence is required to be met. Similarly, the first wind speed correction coefficient, the second wind speed correction coefficient, the third wind speed correction coefficient, the first frequency correction value, the second frequency correction value, and the third frequency correction value are also preferred values, and it is only necessary to satisfy the condition that the first wind speed correction coefficient, the third wind speed correction coefficient, and the second wind speed correction coefficient sequentially increase, and the condition that the first frequency correction value and the third frequency correction value are equal to each other and smaller than the second frequency correction value.
When the degree of filth blockage is high, the heat exchange loss compensation is preferably realized by dynamically adjusting the air speed of the indoor fan and the frequency of the compressor at the same time. When the degree of filth blockage is low, the energy consumption of the compressor is far higher than that of the indoor fan, and the heat exchange loss compensation is preferably realized only by the wind speed of the indoor fan. As shown in fig. 6, first, before the air conditioner leaves the factory, a storage module of the controller stores a detection parameter corresponding to a first critical state, and if a pressure sensor is used for detection, the detection parameter corresponding to the first critical state is a preset pressure value. When the real-time detection value of the pressure sensor is larger than the preset pressure value corresponding to the second critical state and smaller than the preset pressure value corresponding to the first critical state, the condition that the indoor heat exchanger is slightly dirty and blocked is indicated.
It will also be appreciated that it is likely that the real-time surface dust deposition condition of the indoor heat exchanger will be determined to be above the second threshold condition in a short period of time due to the start or stop of the indoor fan, surge operation or external debris entering the housing. To avoid the misoperation, as shown in fig. 6, preferably, if the real-time surface dust deposition state exceeds the second critical state and does not exceed the first critical state, the first timer is controlled to start timing; when the timing of the first timer reaches a first effective timing period and the real-time surface dust deposition state exceeds the second critical state and does not exceed the first critical state in the first effective timing period. The indoor fan is further controlled to operate at a second corrected wind speed, wherein the second corrected wind speed is greater than or equal to the set operating wind speed. The first effective timing period is stored in EEPROM and can be adjusted at any time according to the running condition of the air conditioner, and is preferably set to 30-60 minutes. Specifically, a plurality of values are continuously sampled at equal intervals in a first effective timing period, if all actual detection values are larger than a preset pressure value corresponding to a second critical state and smaller than a preset pressure value corresponding to a first critical state, the real-time surface dust deposition state is judged to exceed the second critical state and be lower than the first critical state, and the indoor fan is driven to work at a higher working rotating speed until the highest rotating speed is reached, so that the compensation for the air conditioning capacity is formed.
When a user uses the air conditioner, even if the user knows that the dust deposition amount of the indoor heat exchanger has influenced the air conditioning capacity, the user may not or unwillingly clean the air conditioner in time for various reasons, if the dynamic control process is maintained all the time, the overall energy consumption of the air conditioner is obviously increased, in order to optimize the overall energy consumption in the process of executing dynamic control, after the indoor fan is controlled to operate according to the second corrected air speed, the second timer is controlled to time, and when the time of the second timer reaches the second effective time period, if the real-time surface dust deposition state still exceeds the second critical state and does not exceed the first critical state, the air speed of the indoor fan is dynamically controlled according to the correction curve. An alternative calibration curve is shown in figure 9. After the second valid timing period is reached, comparing the real-time detection value of the pressure sensor with a preset pressure value in the curve, for example, if the real-time detection value of the pressure sensor is P2, the indoor fan executes a rotation speed of 50RPM, and if the real-time detection value of the pressure sensor is P1, the indoor fan executes a rotation speed of 100 RMP. In the range of P2-P1, the rotation speed of the indoor fan increases linearly with an increase in the pressure detection value. Wherein P2 can be set to a predetermined pressure value corresponding to the second threshold state, and P2 can be set to a predetermined pressure value corresponding to the first threshold state. Of course, the calibration curve can be set as other calibration curves according to different models and capabilities of the indoor fan.
As shown in fig. 7 and 8, it is preferable that the second corrected wind speed is precisely generated by sampling an operation mode of the air conditioner and a current indoor temperature. Specifically, if the cooling mode is currently in use and the current indoor temperature is greater than or equal to the first set temperature, the second corrected wind speed is the sum of the set operating wind speed and a fourth wind speed correction value, wherein the fourth wind speed correction value is the product of the set operating wind speed and a fourth wind speed correction coefficient. When the indoor temperature is higher than or equal to the first set temperature, the temperature of the current air-conditioned room is higher, and meanwhile, the surface of the indoor heat exchanger is only slightly dirty and blocked, the air speed of the indoor fan is only controlled to be increased, and the heat exchange loss caused by the indoor heat exchanger is compensated. The fourth wind speed correction factor may be set to 3%, and the first set temperature may be a value within a numerical range of 26 degrees celsius to 28 degrees celsius. Under the operation parameters of the second corrected wind speed and the current set operation frequency, the air conditioner can reduce the temperature of the indoor environment to a desired interval within a desired time.
And if the current indoor temperature is greater than or equal to the second set temperature and less than the first set temperature in the cooling mode, the second corrected wind speed is equal to the set running wind speed. When the indoor temperature is greater than or equal to the second set temperature and less than the first set temperature, the temperature of the current air-conditioned room is more suitable or slightly lower than the suitable temperature range, and under the condition of comfortable air-conditioned room environment or slightly lower than the suitable temperature, the wind speed and the compressor of the indoor fan can be preferably not compensated for the purpose of saving energy consumption. The second set point temperature may be within a range of values from 20 degrees celsius to 22 degrees celsius.
And if the current indoor temperature is not higher than the third set temperature, the second corrected wind speed is the sum of the set running wind speed and a third wind speed correction value, wherein the third wind speed correction value is the product of the set running wind speed and a third wind speed correction coefficient. When the indoor temperature is lower than or equal to the third set temperature, the temperature of the current air-conditioned room is low, and meanwhile, the surface of the indoor heat exchanger is only slightly dirty and blocked, and the heat exchange loss caused by the indoor heat exchanger is compensated by only increasing the air speed of the indoor fan. The third wind speed correction coefficient can be set to 8%, and the third set temperature can be a value within a numerical range of 5-10 ℃. Under the operation parameters of the second corrected wind speed and the current set operation frequency, the air conditioner can enable the indoor environment temperature to rise to the ideal interval within the expected time.
And if the current indoor temperature is in the heating mode and is less than or equal to the second set temperature and greater than the third set temperature, the second corrected wind speed is the sum of the set operating wind speed and a first wind speed correction value, wherein the first wind speed correction value is the product of the set operating wind speed and the first wind speed correction coefficient. When the indoor temperature is less than or equal to the second set temperature and greater than the third set temperature, for example, within the range of 10 ℃ to 20 ℃, it is indicated that the temperature of the current air-conditioned room is relatively low, but the degree of deviation from the comfortable interval is relatively low, and the heat exchange loss caused by the indoor heat exchanger is compensated by increasing the wind speed of the indoor fan. The first wind speed correction coefficient may be set to 5%.
The first set temperature, the second set temperature and the third set temperature are all optimized values, and during actual setting, only the condition that the first set temperature, the second set temperature and the third set temperature are decreased in sequence is required to be met. Similarly, the first wind speed correction coefficient, the third wind speed correction coefficient and the fourth wind speed correction coefficient are also preferred values, and the third wind speed correction coefficient, the first wind speed correction coefficient and the fourth wind speed correction coefficient are sequentially decreased.
In a more preferable mode, a radar sensor is further disposed in the detection module, and the radar sensor is used for detecting the human activity of the user in the air-conditioned room. If the average value of the human activity amounts of the users in the air-conditioning room detected by the radar sensor is higher than the set human activity amount in a period of time when the air conditioner starts to operate after being initialized until the real-time surface dust deposition state of the indoor heat exchanger corresponding to the pressure detection value detected by the pressure sensor exceeds the preset critical state, the human activity amount in the use environment of the air conditioner is larger than that in the ordinary condition. If the control compensates the heat exchange loss of the indoor heat exchanger by the first corrected wind speed and the first corrected frequency, the first corrected wind speed and the first corrected frequency are further multiplied by the human activity coefficient, respectively, and the operation of the indoor fan and the compressor is controlled by the product. And if the control compensates the heat exchange loss of the indoor heat exchanger through the second corrected wind speed, further multiplying the second corrected wind speed by the human activity coefficient, and controlling the operation of the indoor fan by the product. The human activity coefficient is a constant, preferably in the range of 1.0-1.1. The set amount of human activity is obtained by a technician under experimental conditions and stored in the controller for recall at any time.
The embodiment of the application also provides an air conditioner and a control method applying the air conditioner. The specific steps of the air conditioner control method are described in detail with reference to the detailed description of the above embodiments and the drawings in the specification. No further description is given here, and the air conditioner adopting the air conditioner control method can achieve the same technical effects.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes an air conditioner to perform part or all of the steps of any one of the methods described in the above method embodiments.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units or modules is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be an electrical or other form.
The units described as the separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one physical space, or may also be distributed on a plurality of network units, and some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. An air conditioner control method is characterized by comprising the following steps:
receiving sampling data of the detection module to obtain a real-time surface dust deposition state of the indoor heat exchanger;
when the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, dynamically controlling the air conditioner to operate according to the real-time surface dust deposition state;
judging that the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, and dynamically controlling the air conditioner to run according to the real-time surface dust deposition state to execute the following steps:
if the real-time surface dust deposition state exceeds a first critical state, controlling a first timer to start timing, wherein the first critical state corresponds to a serious filth blockage state;
when the timing of the first timer reaches a first effective timing period and the real-time surface dust deposition state exceeds a first critical state in the first effective timing period, controlling the indoor fan to operate according to a first correction wind speed, and controlling the compressor to operate according to a first correction frequency, wherein the first correction wind speed and the first correction frequency are respectively greater than or equal to a set operation wind speed and a set operation frequency;
the indoor fan is controlled to operate according to the first correction air speed, and the following steps are further executed when the compressor is controlled to operate according to the first correction frequency:
controlling a second timer to start timing;
when the timing of the second timer reaches a second effective timing period, controlling the indoor fan to recover the set operation wind speed to operate, and controlling the compressor to recover the set operation frequency to operate;
controlling a third timer to start timing;
and when the timing of the third timer reaches a third effective timing period, controlling the indoor fan to operate again according to the first correction air speed, controlling the compressor to operate according to the first correction frequency, and repeating the process until the real-time surface dust accumulation state is lower than the first critical state.
2. The air conditioner controlling method according to claim 1,
the first corrected wind speed is the sum of a set operating wind speed and a wind speed correction value; the first correction frequency is the sum of the set operating frequency and the frequency correction value.
3. The air conditioner controlling method according to claim 1,
if the set operating wind speed is the set operating wind speed corresponding to the low wind gear, the first corrected wind speed is the set operating wind speed corresponding to the medium wind gear; if the set operating wind speed is the set operating wind speed corresponding to the middle wind gear, the first corrected wind speed is the set operating wind speed corresponding to the high wind gear; if the set operating wind speed is the set operating wind speed corresponding to the high wind gear, the first corrected wind speed is the set operating wind speed corresponding to the high wind gear; the first correction frequency is the sum of the set running frequency and a frequency correction value, wherein the frequency correction value is the product of the set frequency increasing rate and the current timing time of the second timer.
4. The air conditioner controlling method according to claim 1,
sampling the working mode of the air conditioner and the current indoor temperature;
if the current indoor temperature is higher than or equal to the first set temperature in the cooling mode, the first corrected wind speed is the sum of the set running wind speed and a first wind speed correction value, the first corrected frequency is the sum of the set running frequency and a first frequency correction value, and the first wind speed correction value is the product of the set running wind speed and a first wind speed correction coefficient; if the current indoor temperature is greater than or equal to the second set temperature and less than the first set temperature in the refrigeration mode, the first corrected wind speed is equal to the set running wind speed; if the current indoor temperature is not higher than the third set temperature, the first wind speed correction value is the sum of the set running wind speed and a second wind speed correction value, the first correction frequency is the sum of the set running frequency and a second frequency correction value, and the second wind speed correction value is the product of the set running wind speed and a second wind speed correction coefficient; if the current indoor temperature is in the heating mode, and the current indoor temperature is less than or equal to the second set temperature and greater than the third set temperature, the first corrected wind speed is the sum of the set operating wind speed and a third wind speed corrected value, the first corrected frequency is the sum of the set operating frequency and a third frequency corrected value, and the third wind speed corrected value is the product of the set operating wind speed and a third wind speed corrected coefficient; the first set temperature, the second set temperature and the third set temperature are sequentially decreased progressively, the first wind speed correction coefficient, the third wind speed correction coefficient and the second wind speed correction coefficient are sequentially increased progressively, and the first frequency correction value and the third frequency correction value are equal and smaller than the second frequency correction value.
5. The air conditioner controlling method according to any one of claims 1 to 4,
judging that the real-time surface dust deposition state of the indoor heat exchanger exceeds a preset critical state, and dynamically controlling the air conditioner to run according to the real-time surface dust deposition state to execute the following steps:
if the real-time surface dust deposition state exceeds a second critical state and does not exceed a first critical state, controlling a first timer to start timing, wherein the first critical state corresponds to a serious filth blockage state, and the second critical state corresponds to a slight filth blockage state;
when the timing of the first timer reaches a first effective timing period and the real-time surface dust deposition state exceeds a second critical state and does not exceed a first critical state in the first effective timing period, controlling the indoor fan to operate at a second correction wind speed, wherein the second correction wind speed is greater than or equal to a set operation wind speed;
and controlling a second timer to time to reach a second effective timing period, and if the real-time surface dust deposition state still exceeds the second critical state and does not exceed the first critical state, dynamically controlling the indoor fan wind speed according to the correction curve.
6. The air conditioner controlling method according to claim 5,
sampling the working mode of the air conditioner and the current indoor temperature when the real-time surface dust deposition state exceeds the second critical state and does not exceed the first critical state;
if the current indoor temperature is higher than or equal to the first set temperature in the cooling mode, the second corrected wind speed is the sum of the set running wind speed and a fourth wind speed corrected value, wherein the fourth wind speed corrected value is the product of the set running wind speed and a fourth wind speed corrected coefficient; if the current indoor temperature is greater than or equal to the second set temperature and less than the first set temperature in the refrigeration mode, the second corrected wind speed is equal to the set running wind speed; if the current indoor temperature is not higher than the second set temperature, the second corrected wind speed is the sum of the set operating wind speed and a second wind speed correction value, wherein the second wind speed correction value is the product of the set operating wind speed and a second wind speed correction coefficient; if the current indoor temperature is in the heating mode, and the current indoor temperature is less than or equal to the second set temperature and greater than the third set temperature, the second corrected wind speed is the sum of the set operating wind speed and a first wind speed correction value, wherein the first wind speed correction value is the product of the set operating wind speed and a first wind speed correction coefficient; the first set temperature, the second set temperature and the third set temperature are decreased gradually in sequence, and the third wind speed correction coefficient, the first wind speed correction coefficient and the fourth wind speed correction coefficient are decreased gradually in sequence.
7. The air conditioner control method according to claim 6, characterized in that:
and receiving a pressure detection value sampled by a pressure sensor arranged on the indoor heat exchanger to obtain the surface dust deposition state of the indoor heat exchanger.
8. An air conditioner characterized by employing the air conditioner control method as claimed in any one of claims 1 to 7.
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