CN108444066B - Control method of air conditioner, air conditioner and computer readable storage medium - Google Patents

Control method of air conditioner, air conditioner and computer readable storage medium Download PDF

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Publication number
CN108444066B
CN108444066B CN201810280236.3A CN201810280236A CN108444066B CN 108444066 B CN108444066 B CN 108444066B CN 201810280236 A CN201810280236 A CN 201810280236A CN 108444066 B CN108444066 B CN 108444066B
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air conditioner
air
temperature
angle
indoor
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CN108444066A (en
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屈金祥
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control 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
    • F24F11/77Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/40Damper positions, e.g. open or closed
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses a control method of an air conditioner, which acquires indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time; calculating the dew point temperature of return air of the air conditioner according to the indoor temperature and the indoor relative humidity; and when the temperature of the evaporator of the air conditioner is lower than the dew point temperature, increasing the rotating speed of an indoor fan of the air conditioner. The invention also discloses an air conditioner and a computer readable storage medium. The air conditioner is controlled to operate when the dew point temperature is calculated, so that the temperature of cold air blown out by the air conditioner is higher than the dew point temperature, air outlet condensation of the air conditioner is avoided, and the working efficiency of the air conditioner is improved.

Description

Control method of air conditioner, air conditioner and computer readable storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method for controlling an air conditioner, and a computer-readable storage medium.
Background
During the use of the air conditioner, most users do not want the feeling of wind blowing straight. Therefore, in the prior art, the air speed and the temperature are reduced by adopting a method of reducing the area of the air outlet of the air conditioner, so that the existence of wind sensation is reduced. However, when the area of the air outlet in the air conditioner is reduced, especially when the air outlet area is reduced by the air deflector with the micro-scattering holes, the condensation phenomenon occurs at the air outlet, which affects the working efficiency of the air conditioner and shortens the service life of the air conditioner.
Disclosure of Invention
The invention mainly aims to provide a control method of an air conditioner, the air conditioner and a computer readable storage medium, and aims to solve the technical problems that in order to reduce wind sensation and reduce the area of an air outlet in the air conditioner in the prior art, especially when the air outlet area is reduced by an air deflector with a micro-dispersion hole, the air outlet is condensed, the working efficiency of the air conditioner is influenced, and the service life of the air conditioner is shortened.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, the method comprising:
acquiring indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time;
calculating the dew point temperature of return air of the air conditioner according to the indoor temperature and the indoor relative humidity;
and when the temperature of the evaporator of the air conditioner is lower than the dew point temperature, increasing the rotating speed of an indoor fan of the air conditioner.
Preferably, before the step of increasing the rotation speed of the indoor fan of the air conditioner, the method further includes:
when the temperature of an evaporator of the air conditioner is lower than the dew point temperature, judging whether the temperature difference between the dew point temperature and the temperature of the evaporator is greater than a preset temperature difference;
and when the temperature difference between the dew point temperature and the evaporator temperature is greater than a preset temperature difference, executing the step of increasing the rotating speed of an indoor fan of the air conditioner.
Preferably, after the step of increasing the rotation speed of the indoor fan of the air conditioner, the method further includes:
updating the adjusting times of the rotating speed of the indoor fan;
judging whether the adjusting times are more than preset times or not;
and when the adjusting times are more than the preset times, adjusting the angle of an air deflector of the air conditioner to increase the air outlet area.
Preferably, the air deflectors of the air conditioner include a first air deflector and a second air deflector, the first air deflector is rotatably disposed at the air outlet and connected to the casing of the air conditioner through a first rotating shaft on the casing, the second air deflector is rotatably disposed in the air outlet duct, the second air deflector rotates through a second rotating shaft on the casing, wherein the first air deflector is provided with a plurality of air dispersing holes, and the adjusting of the angle of the air deflectors of the air conditioner includes:
acquiring a current working stage of the air conditioner, wherein the working stage comprises at least one of a no-wind-feeling mode, a soft-wind-feeling stage and a direct-blowing-preventing stage;
determining the corresponding adjustment angles of the first air deflector and the second air deflector according to the working stage;
and adjusting the angles of the first air deflector and the second air deflector according to the adjustment angle.
Preferably, the step of adjusting the angles of the first air deflector and the second air deflector according to the adjustment angle includes:
judging whether the angle of the second air deflector is zero or not;
when the angle of the second air deflector is not zero, reducing the angle of the second air deflector by an adjusting angle corresponding to the second air deflector;
and when the angle of the second air deflector is zero, reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
Preferably, before the step of reducing the angle of the first air deflector by the adjustment angle corresponding to the first air deflector, the method further includes:
determining the minimum angle of the first air deflector according to the working mode;
determining a target angle according to the current angle of the first air deflector and the adjustment angle corresponding to the first air deflector;
judging whether the target angle is larger than the minimum angle;
and when the target angle is larger than the minimum angle, executing the step of reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
Preferably, after the step of determining whether the target angle is greater than the minimum angle, the method further includes:
and when the target angle is smaller than or equal to the minimum angle, the adjusting times of the rotating speed of the indoor fan are reset to zero.
Preferably, after the step of acquiring the indoor temperature and the indoor relative humidity in real time or at regular time, the method further comprises the following steps:
judging whether the indoor temperature is within a preset temperature interval or not;
when the indoor temperature is within the preset temperature range, the step of calculating the dew point temperature of the return air of the air conditioner according to the indoor temperature and the indoor relative humidity is executed;
and when the indoor temperature is not in the preset temperature interval, adjusting the frequency of a compressor of the air conditioner.
Preferably, the adjusting of the compressor frequency of the air conditioner includes:
and when the indoor temperature is higher than a first preset temperature, increasing the frequency of a compressor of the air conditioner at the first preset temperature, wherein the first preset temperature is the maximum temperature of the preset temperature interval.
And when the indoor temperature is lower than a second preset temperature, reducing the frequency of a compressor of the air conditioner, wherein the second preset temperature is the minimum temperature of the preset temperature interval.
Preferably, before the step of reducing the frequency of the compressor of the air conditioner, the method further includes:
when the indoor temperature is lower than a second preset temperature, judging whether the frequency of the compressor is lower than a preset frequency or not;
when the frequency of the compressor is smaller than the preset frequency, reducing the rotating speed of an indoor fan of the air conditioner;
and when the compressor frequency is greater than or equal to a preset frequency, executing the step of reducing the compressor frequency of the air conditioner.
In addition, to achieve the above object, the present invention also provides an air conditioner, comprising: the control method comprises the steps of a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and the steps of the control method of the air conditioner are realized when the control program of the air conditioner is executed by the processor.
In addition, to achieve the above object, the present invention provides a computer-readable storage medium, wherein a control program of an air conditioner is stored on the computer-readable storage medium, and the control program of the air conditioner, when executed by a processor, implements the steps of the control method of the air conditioner as described above.
According to the control method of the air conditioner, the air conditioner and the computer readable storage medium provided by the embodiment of the invention, the indoor temperature and the evaporator temperature of the air conditioner can be obtained through the temperature sensor in real time or at regular time, and the indoor relative humidity can be obtained through the humidity sensor. And calculating the dew point temperature of return air of the air conditioner according to the detected indoor temperature and the indoor relative humidity. When the air conditioner detects that the temperature of the evaporator is lower than the dew point temperature, the rotating speed of an indoor fan of the air conditioner is increased, and due to the increase of the rotating speed of the indoor fan, the air replacement speed on the surface of the evaporator is increased, so that the temperature of the evaporator is increased, namely the temperature of cold air blown out by the air conditioner is increased. The temperature of cold air blown out by the air conditioner is higher than the dew point temperature, thereby avoiding air outlet condensation of the air conditioner and improving the working efficiency of the air conditioner.
Drawings
FIG. 1 is a schematic diagram of a terminal \ device structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 4 is a detailed flowchart of the step of adjusting the angle of the air deflector of the air conditioner according to the third embodiment of the control method of the air conditioner of the present invention;
FIG. 5 is a schematic structural diagram of an indoor unit of an air conditioner at a direct-blowing prevention stage in the control method of the air conditioner of the present invention;
FIG. 6 is a schematic structural diagram of an indoor unit of an air conditioner at a soft wind feeling stage in a control method of the air conditioner according to the present invention;
FIG. 7 is a schematic structural diagram of an air conditioner indoor unit in a control method and no-wind-sensing stage of the air conditioner according to the present invention;
fig. 8 is a flowchart illustrating a control method of an air conditioner according to a fourth embodiment of the present invention.
The reference numbers illustrate:
Figure BDA0001613229360000041
Figure BDA0001613229360000051
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows:
acquiring indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time;
calculating the dew point temperature of return air of the air conditioner according to the indoor temperature and the indoor relative humidity;
and when the temperature of the evaporator of the air conditioner is lower than the dew point temperature, increasing the rotating speed of an indoor fan of the air conditioner.
Because the air outlet area in the air conditioner is reduced for reducing the wind sensation in the prior art, especially when the air outlet area is reduced by the air deflector with the micro-scattering holes, the condensation phenomenon of the air outlet is caused, the working efficiency of the air conditioner is influenced, and the service life of the air conditioner is shortened.
The invention provides a solution, which can acquire indoor temperature and evaporator temperature of an air conditioner through a temperature sensor in real time or at regular time, and can acquire indoor relative humidity through a humidity sensor. And calculating the dew point temperature of return air of the air conditioner according to the detected indoor temperature and the indoor relative humidity. When the air conditioner detects that the temperature of the evaporator is lower than the dew point temperature, the rotating speed of an indoor fan of the air conditioner is increased, and due to the increase of the rotating speed of the indoor fan, the air replacement speed on the surface of the evaporator is increased, so that the temperature of the evaporator is increased, namely the temperature of cold air blown out by the air conditioner is increased. The temperature of cold air blown out by the air conditioner is higher than the dew point temperature, thereby avoiding air outlet condensation of the air conditioner and improving the working efficiency of the air conditioner.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is an air conditioner.
As shown in fig. 1, the terminal may include: the processor 1001 is, for example, a CPU, a parameter detection device 1003, a memory 1004, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The parameter detecting means 1003 may include a temperature sensor, a humidity sensor, or the like for detecting an environmental parameter. The memory 1004 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1004 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1004, which is a kind of computer storage medium, may include therein an operating system, a parameter detection module, and a control program of an air conditioner. And the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1004 and perform the following operations:
acquiring indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time;
calculating the dew point temperature of return air of the air conditioner according to the indoor temperature and the indoor relative humidity;
and when the temperature of the evaporator of the air conditioner is lower than the dew point temperature, increasing the rotating speed of an indoor fan of the air conditioner.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
when the temperature of an evaporator of the air conditioner is lower than the dew point temperature, judging whether the temperature difference between the dew point temperature and the temperature of the evaporator is greater than a preset temperature difference;
and when the temperature difference between the dew point temperature and the evaporator temperature is greater than a preset temperature difference, executing the step of increasing the rotating speed of an indoor fan of the air conditioner.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
updating the adjusting times of the rotating speed of the indoor fan;
judging whether the adjusting times are more than preset times or not;
and when the adjusting times are more than the preset times, adjusting the angle of an air deflector of the air conditioner to increase the air outlet area.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
acquiring a current working stage of the air conditioner, wherein the working stage comprises at least one of a no-wind-feeling mode, a soft-wind-feeling stage and a direct-blowing-preventing stage;
determining the corresponding adjustment angles of the first air deflector and the second air deflector according to the working stage;
and adjusting the angles of the first air deflector and the second air deflector according to the adjustment angle.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
judging whether the angle of the second air deflector is zero or not;
when the angle of the second air deflector is not zero, reducing the angle of the second air deflector by an adjusting angle corresponding to the second air deflector;
and when the angle of the second air deflector is zero, reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
determining the minimum angle of the first air deflector according to the working mode;
determining a target angle according to the current angle of the first air deflector and the adjustment angle corresponding to the first air deflector;
judging whether the target angle is larger than the minimum angle;
and when the target angle is larger than the minimum angle, executing the step of reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
and when the target angle is smaller than or equal to the minimum angle, the adjusting times of the rotating speed of the indoor fan are reset to zero.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
judging whether the indoor temperature is within a preset temperature interval or not;
when the indoor temperature is within the preset temperature range, the step of calculating the dew point temperature of the return air of the air conditioner according to the indoor temperature and the indoor relative humidity is executed;
and when the indoor temperature is not in the preset temperature interval, adjusting the frequency of a compressor of the air conditioner.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
and when the indoor temperature is higher than a first preset temperature, increasing the frequency of a compressor of the air conditioner at the first preset temperature, wherein the first preset temperature is the maximum temperature of the preset temperature interval.
And when the indoor temperature is lower than a second preset temperature, reducing the frequency of a compressor of the air conditioner, wherein the second preset temperature is the minimum temperature of the preset temperature interval.
Further, the processor 1001 may call a control program of the air conditioner stored in the memory 1004, and also perform the following operations:
when the indoor temperature is lower than a second preset temperature, judging whether the frequency of the compressor is lower than a preset frequency or not;
when the frequency of the compressor is smaller than the preset frequency, reducing the rotating speed of an indoor fan of the air conditioner;
and when the compressor frequency is greater than or equal to a preset frequency, executing the step of reducing the compressor frequency of the air conditioner.
Referring to fig. 2, a first embodiment of a control method of an air conditioner according to the present invention includes:
and step S10, acquiring indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time.
The temperature sensor can acquire the indoor temperature and the evaporator temperature of the air conditioner, and the humidity sensor can acquire the indoor relative humidity. The temperature sensors are generally used as a contact temperature sensor and a non-contact temperature sensor, for example, a wearable device detects temperature as the contact temperature sensor, an infrared temperature sensor, a sound wave temperature sensor, etc. detects temperature as the non-contact temperature sensor. The air conditioner detects the indoor temperature, the indoor relative humidity and the evaporator temperature in real time or at regular time so as to adjust the operation parameters of the air conditioner to prevent the air return inlet of the air conditioner from being condensed, the normal operation of the air conditioner is influenced, and the operation effect of the air conditioner is reduced.
And step S20, calculating the dew point temperature of the return air of the air conditioner according to the indoor temperature and the indoor relative humidity.
Because the environmental parameters such as the temperature and the humidity at the return air position of the air conditioner are almost the same as the indoor environmental parameters, and the dew point temperature is related to the temperature and the humidity, the dew point temperature of the return air of the air conditioner can be calculated through the detected indoor temperature and the indoor relative humidity.
Specifically, the calculation formula for calculating the dew point temperature from the temperature and humidity may be as follows:
Figure BDA0001613229360000091
in the above table, Td is the dew point temperature, T1 is the indoor temperature, Rh1 is the indoor relative humidity, and C1 and C2 are coefficients. For example, when the indoor temperature is 22 ℃ and the indoor relative humidity is 55%, the dew point temperature can be calculated as 11.35 ℃ (22 × 0.9041-8.54 — 11.35) according to the above table. The method of calculating the dew point temperature is only one method, and is not limited to this method.
And step S30, increasing the rotating speed of the indoor fan of the air conditioner when the temperature of the evaporator of the air conditioner is lower than the dew point temperature.
The process of cooling and condensing moisture of saturated air in the condensation process is characterized in that under the condition of keeping the content of water vapor in the air unchanged, the temperature of the air is reduced isobarically, when the temperature is reduced to a certain value, the partial pressure of the water vapor reaches the saturation pressure corresponding to the temperature of the current air, the water vapor in the air reaches saturation, the current temperature is the dew point temperature, and when the temperature is further lower than the dew point temperature, the water in the air is condensed to generate the condensation phenomenon. Therefore, when the temperature of the evaporator of the air conditioner is lower than the dew point temperature of the return air of the air conditioner, the temperature of the cold air blown out by the air conditioner is lower than the dew point temperature of the return air of the air conditioner, so that the air outlet of the air conditioner is condensed. The condensation at the air outlet of the air conditioner not only causes the water drops to fall down and brings the sanitary problem indoors and the safety problems such as the sliding of users, but also influences the working efficiency of the air conditioner and shortens the service life of the air conditioner.
Therefore, when the air conditioner detects that the temperature of the evaporator is lower than the dew-point temperature, the rotating speed of the indoor fan of the air conditioner is increased, and the air replacement speed of the surface of the evaporator is increased due to the increase of the rotating speed of the indoor fan, so that the temperature of the evaporator is increased, namely, the temperature of cold air blown by the air conditioner is increased. The temperature of cold air blown out by the air conditioner is higher than the dew point temperature, thereby avoiding air outlet condensation of the air conditioner and improving the working efficiency of the air conditioner.
Further, the temperature of the return air of the air conditioner is usually lower than the indoor temperature, so the dew point temperature of the return air of the air conditioner calculated by the indoor temperature and the indoor relative humidity is often lower than the dew point temperature of the actual return air of the air conditioner. Therefore, when the temperature of the evaporator reaches the calculated dew point temperature, the return air of the air conditioner can not be condensed, and the indoor rotating speed of the air conditioner can be increased only when the temperature of the evaporator is detected to be lower than the dew point temperature by a certain temperature in order to guarantee the operating efficiency of the air conditioner.
In this embodiment, the indoor temperature and the evaporator temperature of the air conditioner can be obtained by the temperature sensor in real time or at regular time, and the indoor relative humidity can be obtained by the humidity sensor. And calculating the dew point temperature of return air of the air conditioner according to the detected indoor temperature and the indoor relative humidity. When the air conditioner detects that the temperature of the evaporator is lower than the dew point temperature, the rotating speed of an indoor fan of the air conditioner is increased, and due to the increase of the rotating speed of the indoor fan, the air replacement speed on the surface of the evaporator is increased, so that the temperature of the evaporator is increased, namely the temperature of cold air blown out by the air conditioner is increased. The temperature of cold air blown out by the air conditioner is higher than the dew point temperature, thereby avoiding air outlet condensation of the air conditioner and improving the working efficiency of the air conditioner.
Referring to fig. 3, a second embodiment of the method for controlling an air conditioner according to the present invention, based on the first embodiment, further includes, after step S30:
and step S40, updating the adjusting times of the rotating speed of the indoor fan.
When the temperature of the evaporator is detected to be lower than the dew point temperature for the first time after the air conditioner is started, and the rotating speed of an indoor fan of the air conditioner is adjusted, the adjusting times of the rotating speed of the indoor fan are recorded, and then the adjusting times are updated every time the rotating speed of the extension set is adjusted. Wherein, the initial adjusting times is 1, and the adjusting times is increased by 1 every time of updating.
Step S50, judging whether the adjusting times are more than the preset times;
and step S60, when the adjusting times are more than the preset times, adjusting the angle of the air deflector of the air conditioner to increase the air outlet area.
If the rotating speed of the indoor fan is adjusted for many times, the temperature of the evaporator of the air conditioner is still lower than the dew point temperature, and other methods are searched for at the moment to avoid condensation of the air conditioner. Therefore, when the rotating speed regulation frequency of the indoor fan is judged to be greater than the preset frequency, the angle of the air deflector of the air conditioner is adjusted to increase the air outlet area, and the air conditioner is further prevented from being condensed.
In this embodiment, the number of times of adjustment of the indoor fan rotational speed is updated after the indoor fan rotational speed is adjusted, whether the number of times of adjustment of the indoor fan rotational speed is greater than a preset number of times is determined, and when the number of times of adjustment is greater than the preset number of times, the air outlet area is increased by adjusting the angle of the air deflector of the air conditioner, so that condensation of the air conditioner is further prevented.
Referring to fig. 4, a third embodiment of the control method of an air conditioner according to the present invention, based on the first or second embodiment, the step S60 includes:
and step S61, acquiring the current working stage of the air conditioner, wherein the working stage comprises at least one of a no-wind-feeling mode, a soft-wind-feeling stage and a direct-blowing-preventing stage.
An air conditioner with no wind sensing function usually includes two air deflectors, which are referred to as a first air deflector and a second air deflector. The first air deflector is rotationally arranged at an air outlet of the air conditioner and is connected with the shell of the air conditioner through a first rotating shaft on the shell; the second air guide plate is rotatably arranged in the air outlet duct and rotates through a second rotating shaft on the shell. In addition, a plurality of air dissipation holes are formed in the first air deflector. Fig. 5, 6, and 7 are schematic structural views of the indoor unit of the air conditioner in the anti-blow-through stage, the soft-wind stage, and the no-wind stage in the no-wind mode, respectively. When the air supply quantity of the air conditioner is maximum, namely the opening degrees of the first air deflector and the second air deflector are maximum, the angle between the first air deflector and the second air deflector is regarded as 0 degree.
Step S62, determining adjustment angles corresponding to the first air deflector and the second air deflector according to the working stage.
Step S63, adjusting the angles of the first wind deflector and the second wind deflector according to the adjustment angle.
And determining the adjusting angle of the first air deflector and the adjusting angle of the second air deflector when the air deflectors are adjusted according to the working stage of the current air conditioner. The working stages of the air conditioner are different, and the adjusting angles of the air deflectors are different. And further adjusting the angles of the first air guide plate and the second air guide plate according to the determined adjustment angle so as to increase the air output of the air conditioner and prevent the air conditioner from being condensed. In addition, in the air deflector adjusting process, the second air deflector is preferentially adjusted, and when the angle of the second air deflector reaches the minimum angle and the angle of the first air deflector does not reach the minimum angle, the angle of the first air deflector is adjusted. The working stages of the air conditioner are different, and the minimum angles of the first air deflector and the second air deflector are also different. Aiming at different stages in the no-wind-sensation mode, the angles of the air guide plates are adjusted to be different, so that the operation effect of the air conditioner in the no-wind-sensation mode can be better maintained.
For example, the adjustment angle of the first air guiding plate corresponding to the no-wind-sensation stage is 5 °, the adjustment angle of the second air guiding plate is 4 °, the minimum angle of the first air guiding plate is 20 °, and the minimum angle of the second air guiding plate is 0 °. The regulation rule of the air deflector is as follows: reducing the angle of the current second air deflector by 4 degrees; if the angle of the second air deflector is 0 degrees and the angle of the first air deflector is not less than 20 degrees, the angle of the first air deflector is reduced by 5 degrees; if the angle of the second air deflector is 0 degrees and the angle of the first air deflector is less than 20 degrees, the angle of the air deflector is not adjusted.
When the angles of the first air deflector and the second air deflector of the air conditioner reach the minimum angle, the adjusting times of the rotating speed of the indoor fan are reset to zero, so that when the temperature of the evaporator is judged to be lower than the dew point temperature, the angle of the air deflector of the air conditioner is not adjusted any more, the current operation mode of the air conditioner is ensured to be maintained, and the initial working purpose of the air conditioner is not violated due to condensation.
In this embodiment, the current working phase of the air conditioner is obtained, and when the angle of the air conditioner is determined to be adjusted according to the current working phase, the angle of the first air deflector and the angle of the second air deflector which are to be adjusted are further adjusted according to the determined angle of the first air deflector and the determined angle of the second air deflector which are to be adjusted, so as to increase the air output of the air conditioner and effectively prevent condensation. Aiming at different stages in the no-wind-sensation mode, the angles of the air guide plates are adjusted to be different, so that the operation effect of the air conditioner in the no-wind-sensation mode can be better maintained.
Referring to fig. 8, a fourth embodiment of the method for controlling an air conditioner according to the present invention is based on any one of the first to third embodiments, and further includes, after step S10:
step S70, judging whether the indoor temperature is in a preset temperature interval;
when the indoor temperature is within the preset temperature interval, executing step S20, namely, calculating the dew point temperature of the return air of the air conditioner according to the indoor temperature and the indoor relative humidity;
and step S80, when the indoor temperature is not in the preset temperature interval, adjusting the frequency of the compressor of the air conditioner.
Before the step of calculating the return air dew point temperature of the air conditioner and controlling the air conditioner to operate according to the relation between the evaporator temperature and the dew point temperature, whether the current indoor temperature is in a preset temperature interval or not can be judged in advance. The preset temperature interval is a more comfortable temperature interval set according to the comfort level of the human body. When the indoor temperature is within the preset temperature range, directly executing the step S20, and controlling the air conditioner to operate to prevent condensation; when the indoor temperature is not within the preset temperature range, after the compressor frequency of the air conditioner is adjusted, step S20 is executed to control the air conditioner to operate to prevent condensation. By adjusting the frequency of the compressor, the indoor air is adjusted so that the indoor temperature is within a preset temperature interval.
Further, when the indoor temperature is not within the preset temperature interval, whether the indoor temperature is smaller than the minimum temperature of the preset temperature interval or larger than the maximum temperature of the preset temperature interval is judged. When the internal temperature is a minimum temperature less than the preset temperature interval, the frequency of the compressor is reduced to avoid the indoor temperature from continuously decreasing, and when the internal temperature is a maximum temperature greater than the preset temperature interval, the frequency of the compressor is increased to reduce the indoor temperature.
In addition, when the frequency of the compressor is reduced to a certain value, in order to maintain the air conditioner to continue to operate, the frequency of the compressor is not reduced any more, and the indoor temperature is prevented from continuously reducing by reducing the rotating speed of the indoor fan.
In this embodiment, before the step of calculating the dew point temperature of the return air of the air conditioner and controlling the operation of the air conditioner according to the relationship between the evaporator temperature and the dew point temperature, it may be determined in advance whether the current indoor temperature is within the preset temperature range. When the indoor temperature is in the preset temperature range, the air conditioner is prevented from being condensed directly according to the control method of the air conditioner in each embodiment; when the indoor temperature is not in the preset temperature range, the condensation of the air conditioner is prevented according to the control method of the air conditioner in each embodiment after the frequency of the compressor of the air conditioner is adjusted. Through the frequency of adjusting the compressor, adjust indoor air for indoor temperature is in predetermineeing the temperature interval, maintains indoor temperature in the temperature range that is more fit for the human body, is favorable to user's physical and mental health.
In addition, an embodiment of the present invention further provides an air conditioner, including: the control method comprises the steps of realizing the control method of the air conditioner according to the various embodiments when the control program of the air conditioner is executed by the processor.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored, and the control program of the air conditioner, when executed by a processor, implements the steps of the control method of the air conditioner according to the above embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A control method of an air conditioner is characterized in that the air conditioner is provided with a shell, the shell is provided with an air outlet, the air outlet is provided with air deflectors, the air deflectors comprise a first air deflector and a second air deflector, the first air deflector is rotatably arranged at the air outlet and is connected with the shell of the air conditioner through a first rotating shaft on the shell, the second air deflector is rotatably arranged in an air outlet duct, the second air deflector rotates through a second rotating shaft on the shell, a plurality of air dispersing holes are formed in the first air deflector, and the control method of the air conditioner comprises the following steps:
acquiring indoor temperature, indoor relative humidity and evaporator temperature of the air conditioner in real time or at regular time;
calculating the dew point temperature of return air of the air conditioner according to the indoor temperature and the indoor relative humidity;
when the temperature of an evaporator of the air conditioner is lower than the dew point temperature, increasing the rotating speed of an indoor fan of the air conditioner;
updating the adjusting times of the rotating speed of the indoor fan;
judging whether the adjusting times are more than preset times or not;
when the adjusting times are larger than the preset times, adjusting the angle of an air deflector of the air conditioner to increase the air outlet area;
the method comprises the steps of obtaining the current working stage of the air conditioner, wherein the working stage comprises at least one of a no-wind-feeling mode, a soft-wind-feeling stage and a direct-blowing-preventing stage, the working stages of the air conditioner are different, the minimum angles of a first air deflector and a second air deflector are different, and when the angles of the first air deflector and the second air deflector reach the minimum angles, the adjusting times of the rotating speed of an indoor fan are set to zero, so that when the temperature of an evaporator is judged to be lower than the dew point temperature, the angle of the air deflector of the air conditioner is not adjusted.
2. The method of controlling an air conditioner according to claim 1, wherein the step of increasing the rotation speed of the indoor fan of the air conditioner is preceded by the step of:
when the temperature of an evaporator of the air conditioner is lower than the dew point temperature, judging whether the temperature difference between the dew point temperature and the temperature of the evaporator is greater than a preset temperature difference;
and when the temperature difference between the dew point temperature and the evaporator temperature is greater than a preset temperature difference, executing the step of increasing the rotating speed of an indoor fan of the air conditioner.
3. The method of claim 1, wherein the adjusting the angle of the air deflector of the air conditioner comprises:
determining the corresponding adjustment angles of the first air deflector and the second air deflector according to the working stage;
and adjusting the angles of the first air deflector and the second air deflector according to the adjustment angle.
4. The method of claim 3, wherein the adjusting the angles of the first and second wind deflectors according to the adjustment angle comprises:
judging whether the angle of the second air deflector is zero or not;
when the angle of the second air deflector is not zero, reducing the angle of the second air deflector by an adjusting angle corresponding to the second air deflector;
and when the angle of the second air deflector is zero, reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
5. The method of claim 4, wherein before the step of reducing the angle of the first air deflector by the adjustment angle corresponding to the first air deflector, the method further comprises:
determining the minimum angle of the first air deflector according to the working stage;
determining a target angle according to the current angle of the first air deflector and the adjustment angle corresponding to the first air deflector;
judging whether the target angle is larger than the minimum angle;
and when the target angle is larger than the minimum angle, executing the step of reducing the angle of the first air deflector by the adjusting angle corresponding to the first air deflector.
6. The control method of an air conditioner according to any one of claims 1 to 5, wherein the step of acquiring the indoor temperature and the indoor relative humidity in real time or at regular time further comprises:
judging whether the indoor temperature is within a preset temperature interval or not;
when the indoor temperature is within the preset temperature range, the step of calculating the dew point temperature of the return air of the air conditioner according to the indoor temperature and the indoor relative humidity is executed;
and when the indoor temperature is not in the preset temperature interval, adjusting the frequency of a compressor of the air conditioner.
7. The control method of an air conditioner according to claim 6, wherein the step of adjusting the compressor frequency of the air conditioner comprises:
when the indoor temperature is higher than a first preset temperature, increasing the frequency of a compressor of the air conditioner at the first preset temperature, wherein the first preset temperature is the maximum temperature of the preset temperature interval;
and when the indoor temperature is lower than a second preset temperature, reducing the frequency of a compressor of the air conditioner, wherein the second preset temperature is the minimum temperature of the preset temperature interval.
8. The method for controlling an air conditioner according to claim 7, wherein the step of reducing the frequency of the compressor of the air conditioner is preceded by the step of:
when the indoor temperature is lower than a second preset temperature, judging whether the frequency of the compressor is lower than a preset frequency or not;
when the frequency of the compressor is smaller than the preset frequency, reducing the rotating speed of an indoor fan of the air conditioner;
and when the compressor frequency is greater than or equal to a preset frequency, executing the step of reducing the compressor frequency of the air conditioner.
9. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor, and a control program of an air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the steps of the control method of the air conditioner according to any one of claims 1 to 8 when executed by the processor.
10. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the steps of the control method of the air conditioner according to any one of claims 1 to 8.
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