CN110779183A - Operation control method and device, air conditioner and storage medium - Google Patents

Operation control method and device, air conditioner and storage medium Download PDF

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Publication number
CN110779183A
CN110779183A CN201911099691.4A CN201911099691A CN110779183A CN 110779183 A CN110779183 A CN 110779183A CN 201911099691 A CN201911099691 A CN 201911099691A CN 110779183 A CN110779183 A CN 110779183A
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China
Prior art keywords
air conditioner
pressure difference
temperature
system pressure
requirement
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CN201911099691.4A
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Chinese (zh)
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CN110779183B (en
Inventor
唐亚林
徐振坤
贺杰
毕然
高卓贤
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Midea Group Co Ltd
Guangzhou Hualing Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Guangzhou Hualing Refrigeration 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
    • F24F11/80Control 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
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/74Control 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
    • F24F2140/00Control inputs relating to system states
    • F24F2140/10Pressure
    • F24F2140/12Heat-exchange fluid pressure
    • 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

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

Abstract

The invention provides an operation control method, an operation control device, an air conditioner and a storage medium, wherein the operation control method of the air conditioner comprises the following steps: determining working condition parameters to be acquired according to the operation mode of the air conditioner; detecting whether the system pressure difference meets the pressure difference requirement or not according to the acquired working condition parameters; detecting that the system pressure differential does not satisfy the pressure differential requirement, reconfiguring a first set of control parameters associated with the system pressure differential to enable a compressor of the air conditioner to continue operating within a specified frequency range. By executing the scheme, the compressor can reliably run according to the low frequency until the system pressure difference meets the pressure difference requirement, so that the regulation of other control parameters matched with the compressor in the low-frequency running state of the compressor is realized, and the frequency of stopping and starting the compressor when the air conditioner runs for a long time under low load is reduced.

Description

Operation control method and device, air conditioner and storage medium
Technical Field
The present invention relates to the field of air conditioner control, and in particular, to an operation control method, an operation control device, an air conditioner, and a computer-readable storage medium.
Background
In the related art, when the air conditioning system needs to operate for a long time with low load, the operation frequency of the compressor is not low enough or the time for allowing the compressor to operate at low frequency is too short, which causes frequent shutdown of the compressor and temperature fluctuation of the air conditioning room at low load, thereby causing reduced reliability of the operation of the compressor and poor user comfort.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the invention to propose a new method of operation control.
Another object of the present invention is to provide an operation control device, an air conditioner, and a computer-readable storage medium.
In order to achieve at least one of the above objects, according to a first aspect of the present invention, an operation control method is provided, which specifically includes: determining working condition parameters to be acquired according to the operation mode of the air conditioner; detecting whether the system pressure difference meets the pressure difference requirement or not according to the acquired working condition parameters; detecting that the system pressure differential does not satisfy the pressure differential requirement, reconfiguring a first set of control parameters associated with the system pressure differential to enable a compressor of the air conditioner to continue operating within a specified frequency range.
Wherein the specified frequency range is greater than 0Hz and less than or equal to 30 Hz.
In the technical scheme, in the operation process of the air conditioner, working condition parameters which are required to be collected and used for detecting whether the system pressure difference meets the pressure difference requirement are different under different operation modes, therefore, firstly, the working condition parameters to be collected are determined based on the current operation mode, the collection operation is executed, whether the system pressure difference meets the pressure difference requirement is detected based on the collected working condition parameters, if the pressure difference requirement is not met, the running frequency of the compressor is not matched with the control parameters such as the rotating speed of a fan, the opening degree of a throttling device and the like, at the moment, the compressor of the air conditioner can continuously run in a specified frequency range by adjusting the running parameters except the running frequency of the compressor, the specified frequency range is a low frequency range, so that the compressor can reliably run according to the low frequency until the system pressure difference meets the pressure difference requirement, and the compressor is in the low frequency, and adjusting other control parameters matched with the air conditioner so as to reduce the frequency of stopping and starting the compressor when the air conditioner runs for a long time under low load.
And then can promote the reliability of compressor operation to further reduce the temperature fluctuation in the room, thereby promote the user and be in the comfortable sensation under the low load running state at the air conditioner.
The pressure difference requirement may be regarded as a pressure difference threshold between the indoor side and the outdoor side, which can ensure that the compressor can continuously operate at a low frequency while satisfying a cooling load or a heating load.
Those skilled in the art can understand that the operation mode of the air conditioner may be a cooling mode, a heating mode, an air purification mode, a dehumidification mode, a humidification mode, and the like, and the operation control scheme is specifically explained mainly based on the operation conditions of the cooling mode and the heating mode.
The system pressure difference refers to a pressure difference between the indoor unit and the outdoor unit, and may be understood as a pressure difference between both sides of a throttle device provided in a flow path communicating the indoor unit and the outdoor unit.
The first group of parameters comprises the rotating speed of the indoor fan, the rotating speed of the outdoor fan, the opening degree of the throttling device and the like.
The working condition parameters comprise room temperature, outdoor environment temperature, indoor heat exchanger pipe temperature, outdoor heat exchanger pipe temperature, exhaust temperature of the compressor, exhaust pressure of the compressor and the like.
In the above technical solution, determining the operating condition parameters to be collected according to the operation mode of the air conditioner specifically includes: if the air conditioner runs in a refrigeration mode, collecting the exhaust temperature of the compressor and the outdoor environment temperature; if the air conditioner operates in a heating mode, the exhaust temperature and the pipe temperature of the indoor heat exchanger are collected.
In the technical scheme, different working condition parameters are collected based on different operation modes, and whether the system pressure difference meets the pressure difference requirement is further judged based on the collected working condition parameters.
Specifically, in the cooling mode, the operating condition parameters include the exhaust temperature of the compressor and the outdoor environment temperature, so that whether the operating frequency of the compressor can enable the compressor to continuously operate or not is determined based on the detection of the exhaust temperature and the outdoor environment temperature.
In the heating mode, the working condition parameters comprise the exhaust temperature and the pipe temperature of the indoor heat exchanger, and whether the room temperature fluctuates and the compressor normally runs or not are detected based on the detection of the exhaust temperature and the pipe temperature.
In any of the above technical solutions, detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes: the duration of the cooling mode is greater than or equal to a first time threshold and the temperature difference between the discharge temperature and the outdoor ambient temperature is detected to be less than a first temperature difference threshold, then it is determined that the current system pressure differential does not meet the pressure differential requirement.
In the technical scheme, whether the system pressure difference meets the pressure difference requirement is detected based on the detection of the duration of the air conditioner and the working condition parameters, specifically, after the duration of the refrigeration mode is greater than or equal to a first duration threshold, if the difference between the exhaust temperature and the outdoor environment temperature is detected to be less than a first temperature threshold, the system pressure difference is considered to be too small and the pressure difference requirement is not met, so that the system pressure difference is controlled to be increased by adjusting a first group of control parameters.
In any of the above technical solutions, detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes: and if the duration of the heating mode is greater than or equal to the second duration threshold and the temperature difference between the exhaust temperature and the pipe temperature is detected to be less than the second temperature difference threshold, determining that the current system pressure difference does not meet the pressure difference requirement.
In the technical scheme, whether the system pressure difference meets the pressure difference requirement is detected based on detection of the duration of the air conditioner and working condition parameters, specifically, after the duration of the heating mode is greater than or equal to a second duration threshold, if the difference between the exhaust temperature and the pipe temperature of the indoor heat exchanger is detected to be less than a second temperature threshold, the system pressure difference is considered to be too small, the pressure difference requirement is not met, and the system pressure difference is further controlled to be increased by adjusting a first group of control parameters.
In any of the above technical solutions, determining the operating condition parameters to be collected according to the operating mode of the air conditioner specifically includes: if the air conditioner operates in a refrigeration mode, collecting the exhaust pressure of a compressor and the outdoor environment temperature; if the air conditioner runs in a heating mode, the exhaust pressure and the room temperature are collected.
In the technical scheme, the working condition parameters do not include the exhaust pressure of the compressor and the outdoor environment temperature, so that whether the running frequency of the compressor can continuously meet the requirement of the current air conditioner for running the air conditioner in the refrigeration mode is detected based on the acquisition of the exhaust pressure and the outdoor environment temperature.
Or the working condition parameters do not include the exhaust pressure of the compressor and the room environment temperature, so that whether the operation frequency of the compressor can continuously meet the requirement of the current air conditioner for operating the air conditioner in the heating mode is detected based on the acquisition of the exhaust pressure and the room temperature, and the room temperature is ensured to have smaller fluctuation.
In any of the above technical solutions, detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes: when the duration of the refrigeration mode is detected to be greater than or equal to a first duration threshold value, configuring a first reference pressure according to the outdoor environment temperature; if the detected exhaust pressure is less than the first reference pressure, it is determined that the system pressure differential does not meet the pressure differential requirement.
In the technical scheme, whether the system pressure difference meets the pressure difference requirement is detected based on comparison between the exhaust pressure and the reference pressure, specifically, in the cooling mode, a corresponding relation table between the outdoor environment temperature and the first reference pressure may be preset, so as to determine the matched first reference pressure according to the detected outdoor environment temperature, and determine whether the system pressure difference cannot meet the pressure difference requirement due to being too small according to a comparison result between the exhaust pressure and the first reference pressure, specifically, if the exhaust pressure is less than the first reference pressure, it indicates that the pressure difference between the indoor unit and the outdoor unit is too small.
In any of the above technical solutions, detecting that the current system pressure difference does not satisfy the pressure difference requirement according to the collected operating condition parameters specifically includes: detecting that the system pressure difference does not meet the pressure difference requirement, specifically comprising: when the duration of the heating mode is detected to be greater than or equal to a second duration threshold, configuring a second reference pressure according to the room temperature; if the exhaust pressure is detected to be less than the second reference pressure, it is determined that the system pressure differential does not meet the pressure differential requirement.
In this technical solution, whether the system pressure difference meets the pressure difference requirement is detected based on a comparison between the discharge pressure and the reference pressure, specifically, in the heating mode, a correspondence table between the room temperature and the second reference pressure may be preset to determine the matched second reference pressure according to the detected room temperature, and determine whether the system pressure difference cannot meet the pressure difference requirement due to being too small according to a comparison result between the discharge pressure and the second reference pressure, specifically, if the discharge pressure is less than the second reference pressure, it also indicates that the pressure difference between the indoor unit and the outdoor unit is too small.
In any of the above technical solutions, the reconfiguring the first set of control parameters related to the system pressure difference, where the first set of control parameters includes at least one of an opening degree of a throttling device disposed between an outdoor unit and an indoor unit of the air conditioner, a rotational speed of an indoor fan, and a rotational speed of an outdoor fan, specifically includes: controlling and reducing the opening degree of the throttling device; controlling and increasing the rotating speed of the indoor fan; and controlling to increase the rotating speed of the outdoor fan and executing at least one control operation to reconfigure the first group of control parameters.
In this technical solution, the opening degree of the throttle device is controlled to be decreased to increase the pressure difference between the indoor unit and the outdoor unit. And/or
The rotating speed of the indoor fan is increased through control, and the heat exchange efficiency of the outdoor heat exchanger is improved, so that the pressure difference between the indoor unit and the outdoor unit is increased. And/or
The rotating speed of the outdoor fan is increased through control, and the heat exchange efficiency of the indoor heat exchanger is improved, so that the pressure difference between the indoor unit and the outdoor unit is increased.
Preferably, the three actions are controlled to be executed simultaneously when the system pressure difference is detected not to meet the pressure difference requirement.
In any of the above technical solutions, the method further includes: and continuing to operate according to the configured first set of control parameters, detecting that the adjusted system pressure difference still does not meet the pressure difference requirement, and reconfiguring a second set of control parameters related to the system pressure difference until the system pressure difference meets the pressure difference requirement.
In any of the above solutions, reconfiguring a second set of control parameters related to the system pressure difference specifically includes: the control increases the operating frequency of the compressor.
Among them, the increase amount of the operation frequency is preferably 2 Hz.
In the technical scheme, if the system pressure difference can not meet the pressure difference requirement after the operation state of the air conditioner is controlled and adjusted according to the first group of control parameters, the fact that the compressor is controlled to operate at the current designated frequency is indicated, the load requirement cannot be met due to the fact that the frequency is too low, and at the moment, the operation frequency of the compressor is increased through control so as to meet the requirement for indoor cooling or heating.
According to an aspect of the second aspect of the present invention, there is provided an operation control device including: a memory and a processor; a memory for storing program code; a processor configured to execute the steps of the operation control method according to any one of the aspects of the first aspect of the present invention.
According to a third aspect of the present invention, there is provided an air conditioner including the operation control device according to any one of the fourth aspects.
According to an aspect of the fourth aspect of the present invention, there is provided a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the operation control method according to any one of the aspects of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a flow diagram of an operational control method according to an embodiment of the invention;
FIG. 2 shows a flow diagram of an operational control method according to another embodiment of the present invention;
FIG. 3 shows a flow diagram of an operational control method according to another embodiment of the present invention;
FIG. 4 shows a flow diagram of an operational control method according to another embodiment of the present invention;
FIG. 5 shows a flow diagram of an operational control method according to another embodiment of the present invention;
fig. 6 shows a schematic block diagram of an operation control device according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The first embodiment is as follows:
as shown in fig. 1, an operation control method according to an embodiment of the present invention includes:
and 102, determining working condition parameters to be acquired according to the running mode of the air conditioner.
The working condition parameters comprise room temperature, outdoor environment temperature, indoor heat exchanger pipe temperature, outdoor heat exchanger pipe temperature, exhaust temperature of the compressor, exhaust pressure of the compressor and the like.
The operation mode of air conditioner can be for refrigeration mode, heating mode, air purification mode, dehumidification mode and humidification mode etc. this application is mainly based on the operating condition of refrigeration mode and heating mode, carries out concrete explanation to the operation control scheme.
And 104, detecting whether the system pressure difference meets the pressure difference requirement or not according to the collected working condition parameters.
The pressure difference requirement may be regarded as a pressure difference threshold between the indoor side and the outdoor side, which can ensure that the compressor can continuously operate at a low frequency while satisfying a cooling load or a heating load.
The system pressure difference refers to a pressure difference between the indoor unit and the outdoor unit, and may be understood as a pressure difference between both sides of a throttle device provided in a flow path communicating the indoor unit and the outdoor unit.
In step 106, it is detected that the system pressure differential does not satisfy the pressure differential requirement, and the first set of control parameters associated with the system pressure differential is reconfigured to enable the compressor of the air conditioner to operate continuously within the specified frequency range.
The first set of parameters may include the rotating speed of the indoor fan, the rotating speed of the outdoor fan, the opening degree of the throttling device, and the like.
In the embodiment, in the operation process of the air conditioner, under different operation modes, the working condition parameters which are required to be collected and used for detecting whether the system pressure difference meets the pressure difference requirement are different, therefore, firstly, the working condition parameters to be collected are determined based on the current operation mode, the collection operation is executed, whether the system pressure difference meets the pressure difference requirement is detected based on the collected working condition parameters, if the pressure difference requirement is not met, the running frequency of the compressor is not matched with the control parameters such as the rotating speed of a fan, the opening degree of a throttling device and the like, at the moment, the compressor of the air conditioner can continuously run in the appointed frequency range by adjusting the running parameters except the running frequency of the compressor, the appointed frequency range is a low frequency range, so that the compressor can reliably run according to the low frequency until the system pressure difference meets the pressure difference requirement, and the compressor is in, the frequency of the compressor stopping and starting is reduced by adjusting other control parameters matched with the air conditioner so as to reduce the frequency of the compressor stopping and starting when the air conditioner runs for a long time under low load, thereby improving the running reliability of the compressor, further reducing the temperature fluctuation in a room and improving the comfortable feeling of a user when the air conditioner runs under the low load.
In some embodiments, step 102 may be: if the air conditioner runs in a refrigeration mode, collecting the exhaust temperature of the compressor and the outdoor environment temperature; if the air conditioner operates in a heating mode, the exhaust temperature and the pipe temperature of the indoor heat exchanger are collected.
In this embodiment, different operating condition parameters are collected based on different operating modes to further determine whether the system pressure differential satisfies the pressure differential requirement based on the collected operating condition parameters.
Specifically, in the cooling mode, the operating condition parameters include the exhaust temperature of the compressor and the outdoor environment temperature, so that whether the operating frequency of the compressor can enable the compressor to continuously operate or not is determined based on the detection of the exhaust temperature and the outdoor environment temperature.
In the heating mode, the working condition parameters comprise the exhaust temperature and the pipe temperature of the indoor heat exchanger, and whether the room temperature fluctuates and the compressor normally runs or not are detected based on the detection of the exhaust temperature and the pipe temperature.
In some embodiments, step 102 may also be: if the air conditioner operates in a refrigeration mode, collecting the exhaust pressure of a compressor and the outdoor environment temperature; if the air conditioner runs in a heating mode, the exhaust pressure and the room temperature are collected.
In this embodiment, the operating condition parameters do not include the discharge pressure of the compressor and the outdoor environment temperature, so as to detect whether the operating frequency of the compressor can continuously meet the requirement of the current air conditioner for operating the air conditioner in the cooling mode based on the collection of the discharge pressure and the outdoor environment temperature.
Or the working condition parameters do not include the exhaust pressure of the compressor and the room environment temperature, so that whether the operation frequency of the compressor can continuously meet the requirement of the current air conditioner for operating the air conditioner in the heating mode is detected based on the acquisition of the exhaust pressure and the room temperature, and the room temperature is ensured to have smaller fluctuation.
In some embodiments, detecting whether the current system pressure difference meets the pressure difference requirement according to the collected operating condition parameters may be implemented as follows:
one possible way is to: the duration of the cooling mode is greater than or equal to a first time threshold and the temperature difference between the discharge temperature and the outdoor ambient temperature is detected to be less than a first temperature difference threshold, then it is determined that the current system pressure differential does not meet the pressure differential requirement.
Wherein if the above relationship does not hold, it is indicative that the system pressure differential satisfies the pressure differential requirement, as will be appreciated by those skilled in the art.
In this embodiment, whether the system pressure difference meets the pressure difference requirement is detected based on the detection of the duration of the air conditioner and the operating condition parameters, specifically, after the duration of the cooling mode is greater than or equal to the first duration threshold, if the difference between the exhaust temperature and the outdoor environment temperature is detected to be less than the first temperature threshold, the system pressure difference is considered to be too small and the pressure difference requirement is not met, so as to further control the increase of the system pressure difference by adjusting the first set of control parameters.
Another possible way is: and if the duration of the heating mode is greater than or equal to the second duration threshold and the temperature difference between the exhaust temperature and the pipe temperature is detected to be less than the second temperature difference threshold, determining that the current system pressure difference does not meet the pressure difference requirement.
Wherein if the above relationship does not hold, it is indicative that the system pressure differential satisfies the pressure differential requirement, as will be appreciated by those skilled in the art.
In this embodiment, whether the system pressure difference meets the pressure difference requirement is detected based on the detection of the duration of the air conditioner and the operating condition parameters, specifically, after the duration of the heating mode is greater than or equal to the second duration threshold, if it is detected that the difference between the exhaust temperature and the pipe temperature of the indoor heat exchanger is less than the second temperature threshold, the system pressure difference is considered to be too small and the pressure difference requirement is not met, so as to further control the increase of the system pressure difference by adjusting the first set of control parameters.
A third possible way: and if the duration of the heating mode is greater than or equal to the second duration threshold and the temperature difference between the exhaust temperature and the pipe temperature is detected to be less than the second temperature difference threshold, determining that the current system pressure difference does not meet the pressure difference requirement.
Wherein if the above relationship does not hold, it is indicative that the system pressure differential satisfies the pressure differential requirement, as will be appreciated by those skilled in the art.
In this embodiment, it is detected whether the system pressure difference satisfies the pressure difference requirement based on a comparison of the discharge pressure and the reference pressure, and particularly, in the cooling mode, a correspondence table of the outdoor ambient temperature and the first reference pressure may be preset to determine a matched first reference pressure according to the detected outdoor ambient temperature, and determine whether the system pressure difference cannot satisfy the pressure difference requirement due to being too small according to a comparison result of the discharge pressure and the first reference pressure, and particularly, if the discharge pressure is less than the first reference pressure, it indicates that the pressure difference between the indoor unit and the outdoor unit is too small.
A fourth possible way: when the duration of the heating mode is detected to be greater than or equal to a second duration threshold, configuring a second reference pressure according to the room temperature; if the exhaust pressure is detected to be less than the second reference pressure, it is determined that the system pressure differential does not meet the pressure differential requirement.
Wherein if the above relationship does not hold, it is indicative that the system pressure differential satisfies the pressure differential requirement, as will be appreciated by those skilled in the art.
In this embodiment, it is detected whether the system pressure difference satisfies the pressure difference requirement based on a comparison of the discharge pressure and the reference pressure, and particularly, in the heating mode, a correspondence table of the room temperature and the second reference pressure may be preset to determine a matching second reference pressure according to the detected room temperature, and determine whether the system pressure difference cannot satisfy the pressure difference requirement due to being too small according to a result of the comparison of the discharge pressure and the second reference pressure, and particularly, if the discharge pressure is less than the second reference pressure, it also indicates that the pressure difference between the indoor unit and the outdoor unit is too small.
In some embodiments, reconfiguring the first set of control parameters related to the system pressure differential may be accomplished by:
one implementation is as follows: controlling and reducing the opening degree of the throttling device; controlling and increasing the rotating speed of the indoor fan; and controlling to increase the rotating speed of the outdoor fan and executing at least one control operation to reconfigure the first group of control parameters.
In this embodiment, the opening degree of the throttle device is controlled to be decreased to increase the pressure difference between the indoor unit and the outdoor unit. And/or
The rotating speed of the indoor fan is increased through control, and the heat exchange efficiency of the outdoor heat exchanger is improved, so that the pressure difference between the indoor unit and the outdoor unit is increased. And/or
The rotating speed of the outdoor fan is increased through control, and the heat exchange efficiency of the indoor heat exchanger is improved, so that the pressure difference between the indoor unit and the outdoor unit is increased.
Preferably, the three actions are controlled to be executed simultaneously when the system pressure difference is detected not to meet the pressure difference requirement.
In some embodiments, further comprising: and the air conditioner continues to operate according to the configured first group of control parameters, detects that the adjusted system pressure difference still does not meet the pressure difference requirement, and reconfigures a second group of control parameters related to the system pressure difference until the system pressure difference meets the pressure difference requirement.
In any of the above embodiments, reconfiguring the second set of control parameters related to the system pressure differential specifically comprises: the control increases the operating frequency of the compressor.
Among them, the increase amount of the operation frequency is preferably 2 Hz.
In this embodiment, if the system pressure difference still cannot meet the pressure difference requirement after controlling and adjusting the operation state of the air conditioner according to the first set of control parameters, it indicates that the compressor is currently controlled to operate at the specified frequency, and the load requirement cannot be met due to too low frequency, and at this time, the operation frequency of the compressor is controlled to be increased to meet the requirement for indoor cooling or heating.
Example two:
as shown in fig. 2, in combination with a specific scenario, an operation control method according to another embodiment of the present invention includes:
step 202, the air conditioner operates according to a refrigeration mode;
step 204, detecting that the operation time T is greater than △ T1, and detecting the exhaust temperature Tp and the outdoor environment temperature T4;
among them, △ t1 is preferably 30 min.
Step 206, detecting Tp-T4< △ Tc, and judging that the high-low pressure difference of the refrigeration system is too small;
among them, △ Tc is preferably 10 ℃.
208, controlling the opening degree L of the expansion valve to be reduced by △ Lc, and increasing the rotating speed of the indoor fan by △ Vc and the rotating speed of the outdoor fan by △ Vo;
among them, △ Lc is preferably 6, △ Vc is preferably 100rpm, and △ Vo is preferably 100 rpm.
And step 210, recording the adjusted operation time ta, and controlling the frequency of the compressor to rise △ Fc if ta is greater than △ T2 and Tp-T4 is less than △ Tc.
Among them, △ Fc is preferably 2Hz, △ t2 is preferably 10 min.
Example three:
as shown in fig. 3, in combination with a specific scenario, an operation control method according to another embodiment of the present invention includes:
step 302, the air conditioner operates according to a heating mode;
step 304, detecting that the operation time T is greater than △ T1, and detecting exhaust temperature Tp and indoor heat exchanger coil temperature T2;
among them, △ t1 is preferably 30 min.
Step 306, detecting Tp-T2< △ Th, and judging that the high-low pressure difference of the heating system is too small;
among them, △ Th is preferably 15 ℃.
308, controlling the opening degree L of the expansion valve to be reduced by △ Lh, and increasing the rotating speed of the indoor fan by △ Vh and the rotating speed of the outdoor fan by △ Vo;
among them, △ Lh is preferably 10, △ Vh is preferably 50rpm, and △ Vo is preferably 100 rpm.
And step 310, recording the adjusted operation time ta, and controlling the frequency of the compressor to rise by △ Fh if ta is greater than △ T2 and Tp-T2 is less than △ Tc.
Among them, △ Fh is preferably 2Hz, △ t2 is preferably 10 min.
Based on the second embodiment and the third embodiment, whether the difference between high pressure and low pressure of the refrigeration system is in a reasonable range is judged by detecting the exhaust temperature Tp, the outdoor temperature T4 and the temperature T2 of the coil pipe of the indoor heat exchanger, and when the difference between high pressure and low pressure of the refrigeration system is too small, the difference between high pressure and low pressure of the refrigeration system is maintained in a reasonable range by adjusting the opening degree of an expansion valve, the rotating speed of an indoor fan, the rotating speed of an outdoor fan, the frequency of a compressor and other parameters, so that the reliability of the compressor and.
Example four:
as shown in fig. 4, in combination with a specific scenario, an operation control method according to another embodiment of the present invention includes:
step 402, the air conditioner operates according to a cooling mode;
step 404, detecting that the operation time length T is greater than △ T1, and detecting the exhaust pressure P and the outdoor environment temperature T4;
among them, △ t1 is preferably 30 min.
Step 406, detecting that P < Pc-min, and judging that the high-low pressure difference of the refrigerating system is too small;
wherein Pc-min is a T4, and a is a first pressure coefficient.
Step 408, controlling the opening degree L of the expansion valve to be reduced by △ Lc, and increasing the rotating speed of the indoor fan by △ Vc and the rotating speed of the outdoor fan by △ Vo;
among them, △ Lc is preferably 6, △ Vc is preferably 100rpm, and △ Vo is preferably 100 rpm.
And step 410, recording the adjusted operation time ta, and controlling the frequency of the compressor to rise △ Fc if the ta is greater than △ t2 and P is less than Pc-min.
Among them, △ Fc is preferably 2Hz, △ t2 is preferably 10 min.
Example five:
as shown in fig. 5, in combination with a specific scenario, an operation control method according to another embodiment of the present invention includes:
step 502, the air conditioner operates according to a heating mode;
step 504, detecting that the operation time T is greater than △ T1, and detecting the exhaust temperature Tp and the room temperature T1;
among them, △ t1 is preferably 30 min.
Step 506, detecting that P is less than Ph-min, and judging that the high-low pressure difference of the refrigerating system is too small;
wherein Ph-min is B T1, and B is a second pressure coefficient.
Step 508, controlling the opening degree L of the expansion valve to be decreased to △ Lh, and increasing the rotating speed of the indoor fan to △ Vh and the rotating speed of the outdoor fan to △ Vo;
among them, △ Lh is preferably 10, △ Vh is preferably 50rpm, and △ Vo is preferably 100 rpm.
And step 510, recording the adjusted operation time ta, and controlling the frequency of the compressor to rise △ Fh if the ta is greater than △ t2 and P is less than Ph-min.
Among them, △ Fh is preferably 2Hz, △ t2 is preferably 10 min.
Based on the fourth embodiment and the fifth embodiment, whether the high-low pressure difference of the refrigeration system is in a reasonable range or not is judged by detecting the exhaust temperature Tp, the outdoor temperature T4 and the temperature T2 of the coil pipe of the indoor heat exchanger, and when the high-low pressure difference of the refrigeration system is too small, the high-low pressure difference of the refrigeration system is maintained in the reasonable range by adjusting the opening degree of an expansion valve, the rotating speed of an indoor fan, the rotating speed of an outdoor fan, the frequency of a compressor and other parameters, so that the reliability of the compressor and the use comfort of.
Example six:
as shown in fig. 6, the operation control device 60 according to the embodiment of the present invention is characterized by including: a memory 602 and a processor 604.
A memory 602 for storing program code; the processor 604 is configured to call a program code to execute the operation control method of the air conditioner according to any of the embodiments.
An air conditioner according to an embodiment of the present invention includes the operation control device 60 described in the above embodiment.
In this embodiment, the air conditioner includes any one of the operation control devices, so that all the beneficial technical effects of the operation control device are achieved, and are not described herein again.
In one embodiment of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of an air conditioner as set forth in any one of the above.
In this embodiment, the computer program is executed by the processor to implement the steps of the control method of the air conditioner as described in any one of the above embodiments, so that all the beneficial technical effects of the control method of the air conditioner are achieved, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. An operation control method of an air conditioner, comprising:
determining working condition parameters to be acquired according to the operation mode of the air conditioner;
detecting whether the system pressure difference meets the pressure difference requirement or not according to the collected working condition parameters;
detecting that the system pressure differential does not satisfy the pressure differential requirement, reconfiguring a first set of control parameters associated with the system pressure differential to enable a compressor of the air conditioner to continue operating within a specified frequency range.
2. The operation control method of the air conditioner according to claim 1, wherein the determining of the operating condition parameters to be collected according to the operation mode of the air conditioner specifically comprises:
if the air conditioner runs in a refrigeration mode, collecting the exhaust temperature of a compressor and the outdoor environment temperature;
and if the air conditioner operates in a heating mode, collecting the exhaust temperature and the pipe temperature of the indoor heat exchanger.
3. The operation control method of an air conditioner according to claim 2, wherein detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes:
the duration of the cooling mode is greater than or equal to a first duration threshold, and it is determined that the current system pressure differential does not satisfy the pressure differential requirement upon detecting that the temperature differential between the discharge temperature and the outdoor ambient temperature is less than a first temperature differential threshold.
4. The operation control method of an air conditioner according to claim 2, wherein detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes:
the duration of the heating mode is greater than or equal to a second duration threshold, and it is detected that the temperature difference between the exhaust temperature and the duct temperature is less than a second temperature difference threshold, it is determined that the current system pressure differential does not satisfy the pressure differential requirement.
5. The operation control method of the air conditioner according to claim 1, wherein the determining of the operating condition parameters to be collected according to the operation mode of the air conditioner specifically comprises:
if the air conditioner operates in a refrigeration mode, collecting the exhaust pressure of a compressor and the outdoor environment temperature;
and if the air conditioner operates in a heating mode, acquiring the exhaust pressure and the room temperature.
6. The operation control method of an air conditioner according to claim 5, wherein detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes:
when the duration of the refrigeration mode is detected to be greater than or equal to a first duration threshold value, configuring a first reference pressure according to the outdoor environment temperature;
if the exhaust pressure is detected to be less than the first reference pressure, determining that the system pressure differential does not satisfy the pressure differential requirement.
7. The operation control method of an air conditioner according to claim 5, wherein detecting that the system pressure difference does not satisfy the pressure difference requirement specifically includes:
when the duration of the heating mode is detected to be greater than or equal to a second duration threshold, configuring a second reference pressure according to the room temperature;
if the exhaust pressure is detected to be less than the second reference pressure, determining that the system pressure differential does not meet the pressure differential requirement.
8. The operation control method of an air conditioner according to any one of claims 1 to 7, wherein the first set of control parameters includes at least one of an opening degree of a throttle device, an indoor fan rotation speed, and an outdoor fan rotation speed, and reconfiguring the first set of control parameters in relation to the system pressure difference includes:
controlling to reduce the opening degree of the throttling device;
controlling and increasing the rotating speed of the indoor fan;
the rotating speed of the outdoor fan is controlled to be increased,
performing at least one control operation as described above to reconfigure the first set of control parameters.
9. The operation control method of an air conditioner according to any one of claims 2 to 7, further comprising:
continuing to operate according to the configured first set of control parameters, and if the system pressure differential does not meet the pressure differential requirement, reconfiguring a second set of control parameters associated with the system pressure differential until the system pressure differential meets the pressure differential requirement.
10. The method of claim 9, wherein reconfiguring the second set of control parameters associated with the system pressure differential comprises:
controlling increasing the operating frequency of the compressor.
11. An operation control device of an air conditioner, comprising: a memory and a processor;
the memory for storing program code;
the processor for calling the program code to perform the operation control method of the air conditioner as claimed in any one of claims 1 to 10.
12. An air conditioner, comprising:
the operation control device of an air conditioner as claimed in claim 11.
13. A computer-readable storage medium, having an operation control program stored thereon, characterized in that the operation control program, when executed by a processor, implements the operation control method of an air conditioner according to any one of claims 1 to 10.
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