CN110513819B - Air conditioner control method, air conditioner and storage medium - Google Patents

Air conditioner control method, air conditioner and storage medium Download PDF

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Publication number
CN110513819B
CN110513819B CN201910813429.5A CN201910813429A CN110513819B CN 110513819 B CN110513819 B CN 110513819B CN 201910813429 A CN201910813429 A CN 201910813429A CN 110513819 B CN110513819 B CN 110513819B
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temperature
air conditioner
inner coil
compressor
frequency
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CN110513819A (en
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罗滔
徐志亮
刘灿贤
梁勇超
熊军
刘颖
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TCL Air Conditioner Zhongshan Co Ltd
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TCL Air Conditioner Zhongshan Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner control method, an air conditioner and a storage medium, wherein the method comprises the following steps: acquiring a first indoor ambient temperature when the air conditioner is heating; when a first difference value between the set temperature of the air conditioner and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value and lasts for a first time threshold value, controlling the air conditioner to enter a preset mode; the preset mode comprises the step of adjusting the frequency of a compressor and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil of the air conditioner. According to the invention, when the air conditioner heats, the rotating speed of the inner fan and the frequency of the compressor of the air conditioner are adjusted by combining the indoor environment temperature and the temperature of the inner coil, so that the temperature fluctuation caused by frequent starting and stopping of the compressor is reduced, and the comfort and the energy conservation of the air conditioner are improved.

Description

Air conditioner control method, air conditioner and storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner and a storage medium.
Background
An air conditioner is a common electric appliance, and the air conditioner realizes refrigeration and heating by means of gas-liquid state conversion of a refrigerant. During refrigeration, the refrigerant is compressed into a high-temperature high-pressure gas state by the compressor, then sent to the condenser of the outdoor unit to be successfully radiated into a normal-temperature high-pressure liquid refrigerant, and enters the evaporator of the indoor unit through the capillary tube, so that the space is increased, the pressure is reduced, and the liquid refrigerant is gasified to absorb heat, thereby realizing refrigeration. During heating, the flowing directions of the refrigerant in the condenser and the evaporator are opposite to those during cooling, so that heating is realized. The existing air conditioner control method is to obtain the set temperature of the air conditioner and control the running ratio of the compressor according to the set temperature, so that the indoor environment temperature reaches the set temperature.
However, the current air conditioning control method, air conditioner, and storage medium are still in need of improvement and improvement.
Disclosure of Invention
The inventor finds that, in the prior art, after the air conditioner starts the heating mode, after the indoor environment temperature reaches the set temperature, if the heating amount is still larger than the indoor heat loss amount, the indoor environment temperature will continuously rise, when the indoor environment temperature is higher than the set temperature by a certain value and continues for a certain time, the compressor will be stopped, and after the indoor environment temperature is reduced to be lower than the set temperature for a period of time, the compressor restarts heating. Under the control method, if the difference between the set temperature of the user and the ambient temperature is small or the room installed by the user is too small, the compressor is frequently triggered to stop, so that the indoor ambient temperature is greatly fluctuated, the comfort experience of the user is influenced, and meanwhile, the power consumption can be increased when the compressor is frequently started and stopped.
The technical problem to be solved by the present invention is to provide an air conditioner control method, an air conditioner and a storage medium, aiming at solving the problems that in the prior art, frequent start and stop of a compressor are controlled to affect the comfort experience of a user and increase the power consumption when the indoor environment temperature reaches a set temperature and then the compressor is stopped.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an air conditioning control method, comprising:
acquiring a first indoor ambient temperature when the air conditioner is heating;
when a first difference value between the set temperature of the air conditioner and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value and lasts for a first time threshold value, controlling the air conditioner to enter a preset mode;
the preset mode comprises the step of adjusting the frequency of a compressor and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil of the air conditioner.
The air conditioner control method, wherein after controlling the air conditioner to enter a preset mode, the method further comprises:
acquiring the temperature of a first inner coil;
when the temperature of the first inner coil is lower than the limit temperature of the inner coil, reducing the rotating speed of the inner fan;
or when the temperature of the first inner coil is greater than or equal to the limit temperature of the inner coil, the rotating speed of the inner fan is kept unchanged.
The air conditioner control method, wherein, after the rotating speed of the inner fan is maintained when the temperature of the first inner coil is greater than or equal to the limit temperature of the inner coil, the method further comprises:
acquiring a second indoor environment temperature, and calculating to obtain a second difference value between the set temperature and the second indoor environment temperature;
if the second difference value is smaller than a second temperature difference threshold value, reducing the frequency of the compressor;
or if the second difference value is greater than the second temperature difference threshold value and smaller than a third temperature difference threshold value, maintaining the frequency of the compressor and the rotating speed of the inner fan unchanged, and repeatedly executing the step of acquiring the temperature of the first inner coil;
or if the second difference value is larger than the third temperature difference threshold value and continues for a second time threshold value, controlling the air conditioner to exit the preset mode. .
The air conditioner control method, wherein after the performing the reducing the frequency of the compressor if the second difference is smaller than a second temperature difference threshold, further includes:
if the frequency of the compressor reaches a preset lowest frequency, reducing the rotating speed of the inner fan;
or, if the frequency of the compressor does not reach the preset lowest frequency, the step of obtaining the temperature of the first inner coil is repeatedly executed.
The air conditioner control method further includes, after the rotating speed of the inner fan is reduced when the first inner coil temperature is lower than the inner coil limit temperature:
acquiring the temperature of the second inner coil;
if the temperature of the second inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the second inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
The air conditioner control method, wherein, after the reducing the rotation speed of the inner fan if the compressor frequency reaches the preset lowest frequency, the method further comprises:
acquiring the temperature of a third inner coil;
if the temperature of the third inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the third inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
The air conditioner control method is characterized in that the first temperature difference threshold value is-5-0 ℃; the first time threshold is 0-20 minutes.
According to the air conditioner control method, the second temperature difference threshold value is-5-0 ℃; the third temperature difference threshold value is 0-5 ℃; the second time threshold is 0-10 minutes.
A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps in the air conditioning control method as recited in any of the above.
The utility model provides an air conditioner, machine and air condensing units in the air conditioner, machine includes in the air conditioner: a processor, a storage medium communicatively coupled to the processor, the storage medium adapted to store a plurality of instructions; the processor is adapted to call instructions in the storage medium to execute steps of implementing the air conditioner control method according to any one of the above.
Has the advantages that: compared with the prior art, the invention provides an air conditioner control method, an air conditioner and a storage medium.
Drawings
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to a preferred embodiment of the present invention.
Fig. 2 is a control flow chart of a preset mode in a preferred embodiment of the air conditioner control method according to the present invention.
Fig. 3 is a schematic diagram of an air conditioning indoor unit according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an air conditioner control method according to a preferred embodiment of the present invention.
The method comprises the following steps:
s100, when the air conditioner is heating, acquiring a first indoor environment temperature.
Specifically, the first indoor environment temperature is a temperature of an indoor space where the indoor unit of the air conditioner is located, and the first indoor environment temperature may be detected by a temperature sensor disposed on the indoor unit of the air conditioner. That is, the indoor unit of the air conditioner may be provided with a temperature sensor for detecting an ambient temperature of an indoor space where the indoor unit of the air conditioner is located. Of course, the first indoor ambient temperature may also be obtained in other manners, for example, the air conditioner indoor unit is connected to an intelligent thermometer preset indoors, and the first indoor ambient temperature collected by the intelligent thermometer is uploaded regularly or in real time.
Specifically, in the present embodiment, the first indoor ambient temperature is obtained every preset time when the air conditioner is heating. Of course, the first indoor ambient temperature can also be acquired in real time when the air conditioner is detected to be heating, so that the timeliness of the detection of the first indoor ambient temperature can be ensured. However, since the change of the indoor ambient temperature is a gradual process, the first indoor ambient temperature is obtained at every preset interval, which can ensure the timeliness of obtaining the first indoor ambient temperature and reduce the loss to the air-conditioning indoor unit, and thus the first indoor ambient temperature is preferably obtained at every preset interval. Wherein the preset time is preset, such as 2 minutes, 3 minutes and the like.
S200, when a first difference value between the set temperature of the air conditioner and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value and lasts for a first time threshold value, controlling the air conditioner to enter a preset mode.
The preset mode comprises the step of adjusting the frequency of a compressor of the air conditioner and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil.
The set temperature refers to the set temperature of the air conditioner at the current moment, the set temperature is the target temperature for heating by the air conditioner, and the set temperature is preset, can be default by a system, and can also be set by a user, for example, when the user selects the air conditioner to execute a heating function, the air conditioner automatically sets the set temperature to be 20 ℃ comfortable for human body according to the indoor environment temperature, or when the user selects the air conditioner to execute heating, the set temperature is set to be 22 ℃. Preferably, the set temperature is set by a user, so that the set temperature can meet the requirements of different users.
Specifically, in the present embodiment, the set temperature (in terms of T) is calculatedSetting upExpressed) and said first indoor ambient temperature (in T)Inner ring 1Expressed) is the first difference of the set temperature minus the first indoor ambient temperature, i.e., the first difference is TSetting up-TInner ring 1。
When a first difference value between the set temperature and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value, acquiring duration time of the first difference value smaller than or equal to the first temperature difference threshold value, specifically, when the first difference value between the set temperature and the first indoor environment temperature is smaller than a preset first temperature difference threshold value, starting a timer to time, when the timer time is greater than the preset first time threshold value, resetting the timer time, and controlling the air conditioner to enter a preset mode.
Specifically, when the first difference value (T) is acquiredSetting up-TInner ring 1) The first difference is then compared to the first temperature difference threshold (denoted by a). Wherein the first temperature difference threshold (A) is-5 to 0 ℃.
When said (T)Setting up-TInner ring 1) When A is less than or equal to A, A is-5-0 ℃, a timer is started to time, when the time of the timer is greater than a preset first time threshold value (represented by X), namely, when a first difference value is less than or equal to-5-0 ℃ (namely, the first indoor environment temperature is higher than the set temperature specific value) and lasts for a specific time, the first indoor environment temperature is determined to reach the target temperature, namely, the air conditioner heats to reach the temperature.
At this time, if the air conditioner maintains the current working state, then, the first indoor environment temperature may continuously rise, which may not only result in higher energy consumption but also affect the comfort experience of the user, and therefore, in this embodiment, when the time of the timer reaches the first time threshold, the timer is cleared, the air conditioner is controlled to enter the preset mode, the frequency of the compressor of the air conditioner and the rotating speed of the internal fan of the air conditioner are adjusted to meet the comfort experience of the user and achieve energy saving.
When said T isSetting up-TInner ring 1When the state less than or equal to A is terminated without being maintained to the first time threshold, the timer is cleared, and a first difference value between the first indoor environment temperature and the set temperature is continuously obtained until the first difference value meets TSetting up-TInner ring 1And when the time is less than or equal to A, restarting the timer for timing.
Preferably, in this embodiment, the value range of the first temperature difference threshold is as follows: the temperature difference threshold value is-5 ℃ and < A < 0 ℃, for example, the first temperature difference threshold value can be-3 ℃ or-4 ℃ and the like, and the value range of the first time threshold value is as follows: 0min < X < 20min, for example, the first time threshold may be 10min or 15min, etc., so that the first indoor ambient temperature is not too high for a long time, causing the user to feel that the room is overheated.
The preset mode specifically comprises the step of adjusting the frequency of a compressor of the air conditioner and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil. Referring to fig. 2, in the preset mode, the control flow of the air conditioner is as follows:
and S01, acquiring the temperature of the first inner coil.
The first inner coil temperature refers to the temperature of a coil of an indoor unit heat exchanger of the air conditioner, and is acquired in real time by a temperature sensor arranged on the coil of the indoor unit heat exchanger. After the first inner coil temperature is obtained, the first inner coil temperature is compared with a preset inner coil limiting temperature, and then the next process is carried out according to the comparison result.
Interior coil pipe limit temperature is for setting up in advance, is used for heating to prevent cold wind, and specifically, the principle that the air conditioner heated is: the refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the heat exchanger of the indoor unit, the high-temperature and high-pressure gas is condensed and released on a coil pipe of the heat exchanger to generate heat, the inner fan rotates to generate air flow, the heat is sent to the air outlet of the air conditioner to be blown out, and hot air is formed. It can be seen that the temperature of the air blown out from the air outlet during heating of the air conditioner is related to the temperature of the first inner coil, and when the temperature of the first inner coil is lower than a certain value, the air blown out from the air conditioner is perceived as cold air by a user, and the value is the limit temperature of the inner coil. The value of the inner coil limiting temperature is related to factors such as the structure of the indoor unit and the arrangement positions of the heat exchanger and the inner fan, and a person skilled in the art can set the inner coil limiting temperature according to the actual design of the air conditioner, such as 25 ℃, and the invention is not limited to this specifically.
In order not to blow out cold wind when the air conditioner heats, influence user's travelling comfort and experience, it is first interior coil pipe temperature is less than when interior coil pipe restriction temperature, need in time adjust.
At step S01: after the first inner coil temperature is obtained, when the first inner coil temperature is smaller than the inner coil limit temperature, the method enters the following steps: and S04a, reducing the rotating speed of the inner fan.
When the rotating speed of the inner fan is reduced, the air output of the inner fan is reduced, and then the lower the speed of the inner fan for sending the heat on the heat exchanger to the air outlet is, the temperature of the first inner coil pipe can be increased, so that the temperature of the air outlet of the air conditioner is increased.
After the step S04a, step S05a is executed to obtain the second inner coil temperature.
Specifically, the inner-coil temperature is obtained again when the first inner-coil temperature is less than the inner-coil limit temperature, and for convenience of description, the obtained inner-coil temperature is referred to as a second inner-coil temperature below when the first inner-coil temperature is less than the inner-coil limit temperature.
And after the temperature of the second inner coil is obtained, carrying out the following steps according to the comparison result of the temperature of the second inner coil and the high-temperature protection temperature of the inner coil. The high-temperature protection temperature of the inner coil is a value preset for ensuring the reliability of the air conditioner. Specifically, when the heat exchanger is maintained at an ultra-high temperature for a long time, the performance of the heat exchanger may be affected and even other peripheral components may be lost, so that when the temperature of the second inner coil reaches the inner coil high-temperature protection temperature, a protection measure for the air conditioner may be required.
If the temperature of the second inner coil is lower than the high-temperature protection temperature of the inner coil, which indicates that the temperature of the inner coil of the air conditioner is within a reliability allowable range, the air conditioner is continuously controlled in the preset mode, and the step S01 is repeatedly executed, that is, the step of obtaining the temperature of the first inner coil is repeatedly executed.
And if the temperature of the second inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, executing a step S06a, controlling the compressor to stop, and controlling the air conditioner to exit the preset mode.
Specifically, the controlling the air conditioner to exit the preset mode specifically includes: and reading a set mode of the air conditioner, and controlling the air conditioner to push out the preset mode to enter the set mode. The setting mode is a mode set when a user operates the air conditioner to perform a heating function through a remote controller or a panel of the indoor unit of the air conditioner, for example, a normal heating mode, a rapid heating mode, and the like. The exiting of the preset mode refers to controlling the air conditioner to enter a set mode, namely, working according to a mode set by a user.
At step S01: after the temperature of a first inner coil is obtained, when the temperature of the first inner coil is more than or equal to the limiting temperature of the inner coil, the rotating speed of the inner fan is kept unchanged, and the steps are carried out: and S02, acquiring a second indoor environment temperature, and calculating to obtain a second difference value between the set temperature and the second indoor environment temperature.
In particular toIn other words, when it is determined that the first inner-coil temperature is equal to or higher than the inner-coil limit temperature, the indoor ambient temperature is acquired again, and for the sake of convenience of distinction, the indoor ambient temperature acquired again when it is determined that the first inner-coil temperature is equal to or higher than the inner-coil limit temperature is referred to as a second indoor ambient temperature (denoted by T)Inner ring 2Representation) and calculates a second difference T between the set temperature and the second indoor ambient temperatureSetting up-TInner ring 2. Will be the TSetting up-TInner ring 2And comparing the temperature difference with a preset threshold value, wherein the preset threshold value comprises a second temperature difference threshold value and a third temperature difference threshold value. Wherein the second temperature difference threshold is less than the third temperature difference threshold.
After step S02, when the second difference is less than the second temperature difference threshold (denoted by F), i.e., TSetting up-TInner ring 2<And F, entering the step: and S03, reducing the frequency of the compressor.
Specifically, the value range of the second temperature difference threshold is as follows: -5 ℃ < F < 0 ℃, for example, F may take-3.5 ℃ or-2 ℃ or the like, that is, when the second indoor ambient temperature is higher than the set temperature and the higher value exceeds a certain value, the compressor frequency is controlled to be lowered in order to prevent the second indoor ambient temperature from further rising.
Specifically, how much the compressor frequency is reduced is executed according to a preset control program, where the control program is stored on an electronic control board of the air conditioner before factory shipment, in this embodiment, a PID (proportional, integral, differential) algorithm which is most common in the art is adopted as the control program, and of course, a person skilled in the art may control and adjust the compressor frequency according to other algorithms, which is not specifically limited by the present invention.
At step S03: and after the frequency of the compressor is reduced, judging whether the frequency of the compressor is the preset lowest frequency.
Specifically, the lowest frequency is obtained according to a preset heating frequency operation curve, the heating frequency operation curve defines upper and lower limits of the operation frequency of the compressor, different outdoor environment temperatures correspond to different heating frequency curves, and the heating frequency curve suitable for the current outdoor environment temperature is obtained, so that the lowest frequency can be obtained.
If the compressor frequency does not reach the lowest frequency, it is indicated that the compressor frequency can be further continuously reduced, at this time, the air conditioner is continuously controlled in the preset mode, and the step S01 is repeatedly executed, that is, the step of obtaining the temperature of the first inner coil is repeatedly executed.
If the compressor frequency reaches the lowest frequency, which indicates that the compressor frequency has reached the lower limit value under the current condition, then, in order to prevent the indoor environment temperature from continuously increasing due to the fact that the air conditioner continuously operates according to the current state, the step S04b is executed, and the rotation speed of the internal fan is reduced.
After the step S04b, step S05b is executed to obtain the third inner coil temperature.
Specifically, the temperature of the inner coil is re-acquired again when the compressor frequency reaches the lowest frequency, and for convenience of explanation, the re-acquired temperature of the inner coil when the compressor frequency reaches the lowest frequency will be referred to as a third temperature of the inner coil.
And after the temperature of the third inner coil is obtained, carrying out the following steps according to the comparison result of the temperature of the third inner coil and the high-temperature protection temperature of the inner coil. If the temperature of the third inner coil is lower than the high-temperature protection temperature of the inner coil, which indicates that the temperature of the inner coil of the air conditioner is within a reliability allowable range, the air conditioner is continuously controlled in the preset mode, and the step S01 is repeatedly executed, that is, the step of obtaining the temperature of the first inner coil is repeatedly executed.
And if the temperature of the third inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, executing a step S06b, controlling the compressor to stop, and controlling the air conditioner to exit the preset mode.
Specifically, the step S06b of controlling the air conditioner to exit the preset mode may be performed according to the description of the step S06a, and will not be described herein again. In the steps S04a and S04b, the inner fan rotation speed is controlled to be decreased by several steps in which the inner fan rotation speed can be preset, and the rotation speed of the inner fan is controlled to be decreased to the next step each time, for example, several steps such as 1800 steps, 2000 steps, 2500 steps are preset for the inner fan rotation speed, and if the current inner fan rotation speed is 2000 steps, the inner fan rotation speed is controlled to be decreased to 1800 steps. The controlling of the rotation speed reduction of the inner fan may also be controlling the rotation speed reduction of the inner fan by a certain value every time, for example, setting the rotation speed reduction of the inner fan by 500 every time, and if the current rotation speed of the inner fan is 2000, controlling the rotation speed reduction of the inner fan to 1500. Of course, the example is only for the purpose of more clearly explaining the scheme, and a person skilled in the art can select the mode for controlling the reduction of the rotation speed of the inner fan according to the actual situation.
In the steps S06a and S06b, in order to enable the air conditioner to continue to output air when the compressor is stopped, and to ensure the user experience, and in order to enable the second inner coil temperature and the third inner coil temperature to be quickly reduced below the inner coil high temperature protection temperature, in this embodiment, it is preferable to maintain the current inner fan rotation speed, that is, to correspondingly maintain the inner fan rotation speed after being reduced in the steps S04a and S04 b.
After the step S02, if the second difference is greater than the second temperature difference threshold and less than the third temperature difference threshold (denoted by E), i.e., T isSetting up-TInner ring 2Satisfies F<TSetting up-TInner ring 2<And E, maintaining the compressor frequency and the inner fan rotation speed unchanged, and repeatedly executing the step S01, that is, repeatedly executing the step of obtaining the first inner coil temperature.
Specifically, the value range of the third temperature difference threshold is as follows: the temperature E is greater than 0 ℃ and less than 5 ℃, for example, the temperature E may be 4 ℃ or 3 ℃, or the like, that is, when the ambient temperature in the third chamber is within a certain range above and below the set temperature, it is determined that the ambient temperature in the third chamber is within an acceptable range, which does not affect comfort perception of the user on the indoor ambient temperature, at this time, the frequency of the compressor or the rotational speed of the internal fan is not adjusted, the air conditioner is continuously controlled according to the preset mode, and the step S01 is repeatedly executed, that is, the step of obtaining the temperature of the first internal coil is repeatedly executed.
After step S02, if the second difference is greater than the third temperature difference threshold, i.e., TSetting up-TInner ring 2Satisfy TSetting up-TInner ring 2>And E, obtaining the duration time that the second difference value belongs to the third temperature difference threshold, and if the second difference value is greater than the third temperature difference threshold and lasts for a second time threshold, executing the following steps: and S07, controlling the air conditioner to exit the preset mode.
Similarly, the controlling the air conditioner to exit the preset mode specifically includes: and reading a set mode of the air conditioner, and controlling the air conditioner to push out the preset mode to enter the set mode.
The setting mode is a mode set when a user operates the air conditioner to perform a heating function through a remote controller or a panel of the indoor unit of the air conditioner, for example, a normal heating mode, a rapid heating mode, and the like. The exiting of the preset mode refers to controlling the air conditioner to enter a set mode, namely, working according to a mode set by a user.
That is, when the third indoor environment temperature is lower than the set temperature and the lower portion exceeds a certain value, it is determined that the third indoor environment temperature is lower than the user's required temperature, and the user may feel that the indoor environment temperature is too low, and at this time, the indoor environment temperature should be preferentially raised so that the air conditioner heats to the temperature. Therefore, the air conditioner is controlled to exit the preset mode at the moment, and the air conditioner operates according to the set mode until the air conditioner reenters the preset mode after the air conditioner heats again to reach the temperature.
Preferably, in order to prevent the third indoor environment temperature from being lower than the set temperature for a long time, so that a user may think that the heating performance of the air conditioner is problematic, in this embodiment, a value range of the second time threshold (represented by W) is smaller, and is 0min < W < 10min, for example, W may be 5min or 8min, and thus, in a short time when the third indoor environment temperature is continuously lower than the set temperature, the air conditioner is controlled to exit the preset mode, enter the set mode to perform normal heating, and raise the indoor environment temperature in time, so that the air conditioner can maintain a heating state to reach the temperature for a long time.
In summary, the present invention provides an air conditioner control method, where when the air conditioner heats to reach a temperature, the air conditioner control method adjusts the frequency of the compressor and the rotational speed of the internal fan in combination with the indoor ambient temperature and the temperature of the internal coil, instead of simply controlling the start and stop of the compressor according to the indoor ambient temperature, so as to prevent the air conditioner from blowing cold air during heating, and also prevent the indoor ambient temperature from frequently fluctuating, thereby ensuring comfort of the user when using the air conditioner and energy-saving operation of the air conditioner.
It should be understood that, although the steps in the flowcharts shown in the figures of the present specification are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
Based on the air conditioner control method, the invention further provides a computer readable storage medium, which stores one or more programs, wherein the one or more programs can be executed by one or more processors to realize the steps of the air conditioner control method according to the embodiment.
Based on the air conditioner control method, the invention also provides an air conditioner, which comprises an air conditioner indoor unit and an air conditioner outdoor unit, wherein a schematic block diagram of the air conditioner indoor unit can be shown in fig. 3. The air conditioner indoor unit comprises a processor, a memory, a network interface, a display screen and a temperature sensor which are connected through a system bus. The processor of the air conditioner indoor unit is used for providing calculation and control capacity. The memory of the air conditioner indoor unit comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the air conditioner indoor unit is used for being connected and communicated with an external terminal through a network. The computer program is executed by a processor to implement an air conditioning control method. The display screen of the air-conditioning indoor unit can be a liquid crystal display screen or an electronic ink display screen, and the temperature sensor of the air-conditioning indoor unit is arranged in the air-conditioning indoor unit in advance and used for detecting the current operating temperature of internal equipment.
Those skilled in the art will understand that the schematic block diagram shown in fig. 3 is only a block diagram of a partial structure related to the solution of the present invention, and does not constitute a limitation on the intelligent terminal to which the solution of the present invention is applied, and a specific air conditioning indoor unit may include more or less components than those shown in the figure, or combine some components, or have a different arrangement of components.
In one embodiment, the processor of the air conditioner indoor unit can at least realize the following steps when executing the computer program:
acquiring a first indoor ambient temperature when the air conditioner is heating;
when a first difference value between the set temperature of the air conditioner and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value and lasts for a first time threshold value, controlling the air conditioner to enter a preset mode;
the preset mode comprises the step of adjusting the frequency of a compressor and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil of the air conditioner.
Wherein, after controlling the air conditioner to enter the preset mode, the method further comprises:
acquiring the temperature of a first inner coil;
when the temperature of the first inner coil is lower than the limit temperature of the inner coil, reducing the rotating speed of the inner fan;
or when the temperature of the first inner coil is greater than or equal to the limit temperature of the inner coil, the rotating speed of the inner fan is kept unchanged.
Wherein, when the first inner coil temperature is greater than or equal to the inner coil limiting temperature, after the inner fan rotating speed is maintained unchanged, the method further comprises:
acquiring a second indoor environment temperature, and calculating to obtain a second difference value between the set temperature and the second indoor environment temperature;
if the second difference value is smaller than a second temperature difference threshold value, reducing the frequency of the compressor;
or if the second difference value is greater than the second temperature difference threshold value and smaller than a third temperature difference threshold value, maintaining the frequency of the compressor and the rotating speed of the inner fan unchanged, and repeatedly executing the step of acquiring the temperature of the first inner coil;
or if the second difference value is larger than the third temperature difference threshold value and continues for a second time threshold value, controlling the air conditioner to exit the preset mode. .
Wherein, if the second difference is smaller than a second temperature difference threshold, the method further comprises, after reducing the frequency of the compressor:
if the frequency of the compressor reaches a preset lowest frequency, reducing the rotating speed of the inner fan;
or, if the frequency of the compressor does not reach the preset lowest frequency, the step of obtaining the temperature of the first inner coil is repeatedly executed.
Wherein, when the first inner coil temperature is less than the inner coil limit temperature, after reducing the inner fan rotating speed, the method further comprises:
acquiring the temperature of the second inner coil;
if the temperature of the second inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the second inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
Wherein, if the compressor frequency reaches to predetermine the lowest frequency and is, then reduce after interior fan rotational speed, still include:
acquiring the temperature of a third inner coil;
if the temperature of the third inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the third inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
Wherein the first temperature difference threshold value is-5 to 0 ℃; the first time threshold is 0-20 minutes.
Wherein the second temperature difference threshold is-5 to 0 ℃; the third temperature difference threshold value is 0-5 ℃; the second time threshold is 0-10 minutes.
Finally, it should be noted that: 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 understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. An air conditioning control method, characterized by comprising:
acquiring a first indoor ambient temperature when the air conditioner is heating;
when a first difference value between the set temperature of the air conditioner and the first indoor environment temperature is smaller than or equal to a first temperature difference threshold value and lasts for a first time threshold value, controlling the air conditioner to enter a preset mode;
the preset mode comprises the steps of adjusting the frequency of a compressor and the rotating speed of an inner fan of the air conditioner according to the indoor environment temperature and the temperature of an inner coil of the air conditioner;
after controlling the air conditioner to enter the preset mode, the method further comprises the following steps:
acquiring the temperature of a first inner coil;
when the temperature of the first inner coil is lower than the limit temperature of the inner coil, reducing the rotating speed of the inner fan;
acquiring the temperature of the second inner coil;
if the temperature of the second inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the second inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
2. The air conditioner control method according to claim 1, wherein after controlling the air conditioner to enter the preset mode, the method further comprises:
when the temperature of the first inner coil is larger than or equal to the limiting temperature of the inner coil, the rotating speed of the inner fan is kept unchanged.
3. The air conditioning control method according to claim 2, wherein after the maintaining of the inner fan rotation speed when the first inner coil temperature is equal to or higher than the inner coil limit temperature, the method further comprises:
acquiring a second indoor environment temperature, and calculating to obtain a second difference value between the set temperature and the second indoor environment temperature;
if the second difference value is smaller than a second temperature difference threshold value, reducing the frequency of the compressor;
or if the second difference value is greater than the second temperature difference threshold value and smaller than a third temperature difference threshold value, maintaining the frequency of the compressor and the rotating speed of the inner fan unchanged, and repeatedly executing the step of acquiring the temperature of the first inner coil;
or if the second difference value is larger than the third temperature difference threshold value and continues for a second time threshold value, controlling the air conditioner to exit the preset mode.
4. The method of claim 3, wherein after performing the step of reducing the compressor frequency if the second difference is less than a second temperature difference threshold, the method further comprises:
if the frequency of the compressor reaches a preset lowest frequency, reducing the rotating speed of the inner fan;
or, if the frequency of the compressor does not reach the preset lowest frequency, the step of obtaining the temperature of the first inner coil is repeatedly executed.
5. The air conditioner control method according to claim 4, further comprising, after reducing the rotation speed of the inner fan if the compressor frequency reaches a preset minimum frequency:
acquiring the temperature of a third inner coil;
if the temperature of the third inner coil is lower than the high-temperature protection temperature of the inner coil, repeatedly executing the step of obtaining the temperature of the first inner coil;
or if the temperature of the third inner coil is greater than or equal to the high-temperature protection temperature of the inner coil, controlling the compressor to stop and controlling the air conditioner to exit the preset mode.
6. The air conditioner control method according to claim 1, wherein the first temperature difference threshold is-5 to 0 degrees centigrade;
the first time threshold is 0-20 minutes.
7. The air conditioner control method according to claim 3, wherein the second temperature difference threshold is-5 to 0 degrees centigrade;
the third temperature difference threshold value is 0-5 ℃;
the second time threshold is 0-10 minutes.
8. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the air-conditioning control method according to any one of claims 1 to 7.
9. An air conditioner, comprising:
an air conditioner outdoor unit;
machine in the air conditioning, machine includes in the air conditioning:
a storage medium communicatively coupled to the processor, the storage medium adapted to store a plurality of instructions;
a processor adapted to invoke instructions in the storage medium to perform steps in implementing the air conditioning control method of any of claims 1-7.
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