CN112963934A - Air conditioner control method and device, air conditioner and storage medium - Google Patents

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

Info

Publication number
CN112963934A
CN112963934A CN202110288607.4A CN202110288607A CN112963934A CN 112963934 A CN112963934 A CN 112963934A CN 202110288607 A CN202110288607 A CN 202110288607A CN 112963934 A CN112963934 A CN 112963934A
Authority
CN
China
Prior art keywords
temperature
air conditioner
preset
indoor coil
expansion valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110288607.4A
Other languages
Chinese (zh)
Other versions
CN112963934B (en
Inventor
杨瑞
宋培刚
陶斯宏
孙常权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong TCL Intelligent HVAC Equipment Co Ltd
Original Assignee
Guangdong TCL Intelligent HVAC Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong TCL Intelligent HVAC Equipment Co Ltd filed Critical Guangdong TCL Intelligent HVAC Equipment Co Ltd
Priority to CN202110288607.4A priority Critical patent/CN112963934B/en
Publication of CN112963934A publication Critical patent/CN112963934A/en
Application granted granted Critical
Publication of CN112963934B publication Critical patent/CN112963934B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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

Abstract

The invention belongs to the technical field of air conditioners and discloses an air conditioner control method and device, an air conditioner and a storage medium. The method comprises the steps of obtaining the outdoor environment temperature of the air conditioner in a refrigeration mode; when the outdoor environment temperature meets the preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for the preset time, the air conditioner enters an anti-freezing protection detection mode; acquiring the temperature of an indoor coil of an air conditioner; and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of the compressor and the rotating speed of the inner fan according to the outdoor environment temperature and the indoor coil pipe temperature. According to the invention, when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, the regulation and control of the internal fan are added, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved.

Description

Air conditioner control method and device, 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 and device, an air conditioner and a storage medium.
Background
When the air conditioner is used for refrigerating at low temperature, the temperature of the evaporator of the internal machine is low. When the evaporator temperature is below the freezing point temperature of the environment, the fins begin to frost continuously. The evaporator frosts, which affects the cooling effect of the air conditioner, and if frosting too much, the reliability problem occurs. At present, the air conditioner can solve frosting and defrosting through an anti-freezing function, and the evaporator can be ensured to enter into anti-freezing in time under the condition of acceptable frosting, so that the frosting of the evaporator is completely removed. The anti-freezing function is mainly realized by detecting the temperature of the inner pipe, and if the temperature is reduced to a certain set value and is maintained to be less than or equal to the set value for a certain time, the unit enters anti-freezing protection.
However, for an air conditioning unit having a low-temperature cooling function: the lower limit of the outer ring temperature of the operation of the refrigerator can reach-15 ℃ or even lower temperature in a refrigeration mode; after the air conditioner runs for a period of time, the return air filter screen is dirty and blocked, and the heat exchange effect of the air conditioner can be directly influenced by dust accumulation of an indoor side heat exchanger and the like; the indoor side special operating conditions, such as high humidity or low internal machine rotation speed, can also cause evaporation temperature to be low, the phenomenon that frosts very fast. The above conditions can cause the phenomenon of anti-freezing protection frequently occurring in the running process of the unit under the low-temperature working condition, on one hand, frequent starting and stopping can affect the running reliability of the unit, and on the other hand, the use comfort of a user can be affected.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, an air conditioner control device, an air conditioner and a storage medium, and aims to solve the technical problem that the running reliability of a unit and the use comfort of a user are influenced by frequent anti-freezing protection of the conventional air conditioner.
In order to achieve the above object, the present invention provides an air conditioner control method, including the steps of:
acquiring the outdoor environment temperature of the air conditioner in a refrigeration mode;
when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode;
when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner;
and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil pipe temperature.
Optionally, before the step of obtaining the temperature of the indoor coil of the air conditioner, the method further includes:
controlling a first electronic expansion valve in the air conditioner to operate for a first preset time at an initial opening degree, and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode;
and after the first electronic expansion valve operates for a first preset time at an initial opening degree, executing the step of acquiring the temperature of the indoor coil of the air conditioner.
Optionally, the step of adjusting the opening of the first electronic expansion valve, the operating frequency of the compressor, and the rotational speed of the internal fan of the air conditioner according to the outdoor environment temperature and the indoor coil temperature includes:
when the outdoor environment temperature is lower than the preset low-temperature, controlling an inner fan of the air conditioner to operate at a preset high-wind-gear rotating speed;
when an inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil pipe;
when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
Optionally, the step of adjusting an opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil includes:
when the temperature of the indoor coil pipe is lower than a first preset inner coil temperature, controlling the first electronic expansion valve to adjust according to a preset opening increasing mode based on the initial opening;
when the temperature of the indoor coil pipe is greater than or equal to the first preset inner disc temperature and less than or equal to the second preset inner disc temperature, controlling the first electronic expansion valve to operate at the current opening degree, wherein the first preset inner disc temperature is less than the second preset inner disc temperature;
and when the temperature of the indoor coil pipe is greater than the second preset inner coil pipe temperature, controlling the first electronic expansion valve to adjust according to a preset opening reducing mode based on the current opening.
Optionally, when it is detected that the temperature of the indoor coil pipe meets a preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and after the step of controlling the inner fan of the air conditioner to operate at a preset windshield rotation speed, the method further includes:
and after the compressor of the air conditioner runs for a first preset shutdown time in the shutdown protection mode, controlling the air conditioner to exit the shutdown protection mode when the temperature of the indoor coil pipe is detected to meet the preset exit protection temperature.
Optionally, after the step of obtaining the outdoor ambient temperature of the air conditioner in the cooling mode, the method further includes:
when the outdoor environment temperature meets a preset normal-temperature refrigerating temperature and a compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode;
when the air conditioner is in the anti-freezing protection detection mode, controlling a first electronic expansion valve in the air conditioner to be locked;
and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode.
Optionally, the step of controlling the air conditioner to enter an anti-freezing protection detection mode includes:
when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner;
when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
In addition, to achieve the above object, the present invention also provides an air conditioning control apparatus including:
the acquisition module is used for acquiring the outdoor environment temperature of the air conditioner in a refrigeration mode;
the detection module is used for controlling the air conditioner to enter an anti-freezing protection detection mode when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and a compressor of the air conditioner runs for a preset time;
the acquisition module is further configured to acquire the temperature of the indoor coil of the air conditioner when the air conditioner is in the anti-freezing protection detection mode;
and the adjusting module is used for adjusting the opening of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil temperature.
In addition, to achieve the above object, the present invention also provides an air conditioner including: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program being configured to implement the steps of the air conditioning control method as described above.
Furthermore, to achieve the above object, the present invention also proposes a storage medium having stored thereon an air conditioning control program which, when executed by a processor, implements the steps of the air conditioning control method as described above.
The invention obtains the outdoor environment temperature of the air conditioner in the refrigeration mode; when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode; when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner; and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil pipe temperature. According to the invention, different controls are executed on the air conditioner under different outdoor environment temperatures, and the regulation control of the inner fan is added when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved, so that the technical problem that the operational reliability of the unit and the use comfort of the user are influenced by frequent anti-freezing protection of the conventional air conditioner is solved.
Drawings
FIG. 1 is a schematic diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of an air conditioning control method according to the present invention;
FIG. 3 is a schematic diagram of a system of an air conditioner according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a second embodiment of an air conditioning control method according to the present invention;
FIG. 5 is a flowchart illustrating a third embodiment of an air conditioning control method according to the present invention;
fig. 6 is a block diagram showing the configuration of the first embodiment of the air conditioning control apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the air conditioner, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an air conditioner control program.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the air conditioner calls an air conditioner control program stored in the memory 1005 through the processor 1001 and executes the air conditioner control method provided by the embodiment of the invention.
Based on the hardware structure, the embodiment of the air conditioner control method is provided.
An embodiment of the present invention provides an air conditioner control method, and referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of an air conditioner control method according to the present invention.
In this embodiment, the air conditioner control method includes the steps of:
step S10: and acquiring the outdoor ambient temperature of the air conditioner in the cooling mode.
It should be noted that, in this embodiment, for an air conditioning unit with a low-temperature refrigeration function, an anti-freezing protection phenomenon frequently occurs in a process of operating the air conditioning unit under a low-temperature working condition, on one hand, frequent start and stop may affect operation reliability of the unit, and on the other hand, may affect use comfort of a user. In the embodiment, for the phenomenon that frequent freezing is caused in the actual low-temperature working condition testing process, the low-temperature working condition operation mode of the air conditioning unit may be divided into a low-temperature refrigeration mode and a normal-temperature refrigeration mode, which is not limited in this embodiment.
Specifically, in the normal operation process after the air conditioner is started, the outdoor environment temperature can be detected through a temperature sensor arranged outside the air conditioner, the current actual outdoor environment temperature can also be obtained through networking, and the detected/obtained outdoor environment temperature is transmitted to the controller of the air conditioner. Acquiring the outdoor ambient temperature of the air conditioner in the cooling mode, wherein the outdoor ambient temperature can be set as TwCan pass through the outdoor environment temperature TwTo determine which cooling mode the air conditioner is in, the present embodiment is described in a low-temperature cooling mode and a normal-temperature cooling mode.
It is easy to understand that, in order to ensure the stability of the air conditioner control and avoid unnecessary fluctuation, the steps of the air conditioner control method of each embodiment of the present invention are executed after the air conditioner is turned on for a certain period of time and then the outdoor ambient temperature is acquired. To ensure the accuracy of the data, the outdoor environment temperature may be acquired at preset time intervals, the plurality of outdoor environment temperatures acquired within a preset time period are subjected to periodic data averaging, the obtained average value is used as the finally detected/acquired outdoor environment temperature, for example, the preset time period is 1 minute (one period), 5 seconds are the preset time interval, data is read/acquired once every 5 seconds, 12 data are acquired for 1 minute, the 12 data are subjected to average value processing, and the obtained final value is used as the finally detected/acquired outdoor environment temperature for the operation of the subsequent steps.
Step S20: and when the outdoor environment temperature meets the preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for the preset time, controlling the air conditioner to enter an anti-freezing protection detection mode.
It should be understood that the outdoor ambient temperature T of the air conditioner in the cooling mode is obtainedwCan pass through the outdoor environment temperature TwTo determine which cooling mode the air conditioner is in, the present embodiment is described in a low-temperature cooling mode and a normal-temperature cooling mode. In this embodiment, the outdoor ambient temperature T corresponding to the low-temperature refrigeration mode may be setwIs-15 is not more than TwThe temperature is less than or equal to-2 ℃, and the outdoor environment temperature T corresponding to the normal temperature refrigeration mode can be setwIs Tw> -2 deg.C, the specific temperature setting is not limited in this example.
Specifically, the outdoor ambient temperature T corresponding to the low-temperature refrigeration modewIs-15 is not more than TwThe temperature of the preset low-temperature refrigeration temperature is less than or equal to minus 2 ℃, namely the temperature range of the preset low-temperature refrigeration temperature can be between minus 15 ℃ and minus 2 DEG C]Outdoor ambient temperature TwThe method comprises the steps of meeting a preset low-temperature refrigeration temperature, namely being in a low-temperature refrigeration mode, controlling the air conditioner to enter an anti-freezing protection detection mode when the compressor of the air conditioner runs for a preset time, namely entering the anti-freezing protection detection mode after the compressor continuously runs for 6min, and starting to detect anti-freezing protection. The specific time value of the preset time for the compressor to operate is not limited in this embodiment.
Step S30: and when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner.
It should be noted that the compressor enters the anti-freezing protection detection mode after continuously operating for 6min to start detecting the anti-freezing protection, and at this time, the temperature of the indoor coil of the air conditioner needs to be acquired, and the subsequent air conditioner control is performed according to the temperature of the indoor coil of the air conditioner. Before the indoor coil temperature of the air conditioner is obtained again, the method further comprises the following steps: controlling a first electronic expansion valve in the air conditioner to operate for a first preset time at an initial opening degree, and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode; and after the first electronic expansion valve operates for a first preset time at an initial opening degree, executing the step of acquiring the temperature of the indoor coil of the air conditioner.
In particular, the outdoor ambient temperature TwAnd when the preset low-temperature refrigeration temperature is met, namely the air conditioner is in a low-temperature refrigeration mode, the compressor continuously operates for 6min and then enters an anti-freezing protection detection mode to start to detect anti-freezing protection. The air conditioner is started in the low-temperature refrigeration mode, the opening degree of a first electronic expansion valve in an air conditioner system can be maintained for 2min after being opened to an initial opening degree of 300b, the temperature of an indoor coil of the air conditioner is obtained, the opening degree of the first electronic expansion valve is adjusted according to the temperature change of the indoor coil, and a second electronic expansion valve can be controlled according to a preset return air superheat degree control mode, wherein the initial opening degree of the first electronic expansion valve is not limited in the embodiment.
Step S40: and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil pipe temperature.
It should be understood that, under different outdoor environment temperatures, different controls are executed on the air conditioner, and when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, the regulation control of the inner fan is added, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved.
It is easy to understand that the process of adjusting the opening degree of the first electronic expansion valve, the operating frequency of the compressor and the rotating speed of the internal fan of the air conditioner according to the outdoor environment temperature and the indoor coil temperature may be: when the outdoor environment temperature is lower than the preset low-temperature, controlling an inner fan of the air conditioner to operate at a preset high-wind-gear rotating speed; when an inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil pipe; when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
Specifically, referring to fig. 3, fig. 3 is a schematic diagram of a system of an air conditioner according to an embodiment of the present invention, where the system of the air conditioner may include a compressor, a low-pressure switch, a high-pressure switch, an exhaust temperature sensing bulb, an intake temperature sensing bulb, a four-way valve, a finned tube condenser, an external coil temperature, an environmental temperature sensing bulb, a plurality of filters, a first electronic expansion valve, a second electronic expansion valve, a check valve, an electric heating module, an internal coil, and a finned tube evaporator. The compressor is connected with the finned tube condenser and the finned tube evaporator through the four-way valve respectively, the flow direction of the refrigerant is shown by arrows in fig. 3, wherein solid arrows represent a refrigerating flow direction, dotted arrows represent a heating flow direction, solid loops can represent refrigerating loops, and dotted loops can represent heating loops. Under different outer rings, the regulation control of the inner fan is added, so that the continuous and stable operation of the unit is better ensured. A bypass module is added to a system of the air conditioner, so that the amount of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerant is ensured; meanwhile, the reliable operation of the air conditioning unit is better ensured.
Specifically, the outdoor ambient temperature T is detected in the cooling modewWhen the temperature is less than or equal to minus 2 ℃, an inner fan of the air conditioner can operate according to the high-wind-level rotating speed; and acquiring the temperature T of the indoor coil of the air conditioner, and controlling the opening degree of the first electronic expansion valve through the temperature T of the indoor coil. When the temperature T of the indoor coil pipe is detected to be less than or equal to 2 ℃ and lasts for 60s or the room is detectedWhen the temperature T of the inner coil pipe is less than or equal to 0 ℃, controlling the air conditioning unit to enter shutdown protection, and restoring the set windshield operation of the inner fan; and after the compressor is shut down for more than 3min in a protection manner, when the temperature T of the indoor coil is detected to be more than or equal to 8 ℃ for continuously 30s or the temperature T of the indoor coil is detected to be more than or equal to 10 ℃, controlling the air conditioning unit to quit the shutdown protection and restore the normal operation.
The embodiment obtains the outdoor environment temperature of the air conditioner in the refrigeration mode; when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode; when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner; and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil pipe temperature. In the embodiment, different controls are executed on the air conditioner at different outdoor environment temperatures, and the adjustment control of the inner fan is added when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved, so that the technical problem that the operational reliability of the unit and the use comfort of the user are influenced by frequent anti-freezing protection of the conventional air conditioner is solved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a second embodiment of the air conditioning control method according to the present invention, and the second embodiment of the air conditioning control method according to the present invention is proposed based on the first embodiment.
In the second embodiment, the step S40 includes:
step S401: and when the outdoor environment temperature is lower than the preset low-temperature, controlling an inner fan of the air conditioner to operate at a preset high-wind-gear rotating speed.
It should be understood that, under different outdoor environment temperatures, different controls are executed on the air conditioner, and when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, the regulation control of the inner fan is added, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved.
Specifically, the outdoor ambient temperature T is detected in the cooling modewWhen the temperature is less than or equal to minus 2 ℃, the inner fan of the air conditioner can run according to the high-wind-gear rotating speed.
Step S402: and when the inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil.
It is easy to understand that the outdoor ambient temperature T is detected in the cooling modewWhen the temperature is less than or equal to minus 2 ℃, an inner fan of the air conditioner can operate according to the high-wind-level rotating speed; and acquiring the temperature T of the indoor coil of the air conditioner, and controlling the opening degree of the first electronic expansion valve through the temperature T of the indoor coil. The specific mode of adjusting the opening degree of the first electronic expansion valve according to the temperature of the indoor coil pipe can be as follows: when the indoor coil temperature T is less than a first preset inner coil temperature T1, controlling the first electronic expansion valve to adjust according to a preset opening increasing mode based on the initial opening; when the indoor coil temperature T is greater than or equal to the first preset inner disc temperature T1 and less than or equal to a second preset inner disc temperature T2, controlling the first electronic expansion valve to operate at the current opening degree, wherein the first preset inner disc temperature T1 is less than the second preset inner disc temperature T2; and when the indoor coil temperature T is greater than the second preset inner coil temperature T2, controlling the first electronic expansion valve to adjust according to a preset opening reduction mode based on the current opening.
Specifically, when the indoor coil temperature T < the first preset inner coil temperature T1, that is, T < 3 ℃, is detected, the preset increasing opening degree mode may be that the opening degree of the first electronic expansion valve may be increased by 8 × 3-T b each time; when the temperature T of the indoor coil pipe is detected to be equal to or more than T of a first preset inner disc temperature T1 and equal to or less than T of a second preset inner disc temperature T2, namely, T is equal to or more than 3 ℃ and equal to or less than 4 ℃, the first electronic expansion valve keeps the current opening degree; when the indoor coil temperature T > the second preset inner disc temperature T2, i.e. T > 4 ℃, is detected, the preset decreasing opening degree mode may be that the opening degree of the first electronic expansion valve may be decreased by 8 × 3-T b each time.
Step S403: when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
When the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to operate at a preset windshield rotating speed; and after the compressor of the air conditioner runs for a first preset shutdown time in the shutdown protection mode, controlling the air conditioner to exit the shutdown protection mode when the temperature of the indoor coil pipe is detected to meet the preset exit protection temperature.
Specifically, the indoor coil temperature T of the air conditioner is obtained, and the opening degree of the first electronic expansion valve can be controlled through the indoor coil temperature T. When the temperature T of the indoor coil pipe is detected to be less than or equal to 2 ℃ and lasts for 60s or the temperature T of the indoor coil pipe is detected to be less than or equal to 0 ℃, the air conditioning unit is controlled to enter shutdown protection, and the set windshield operation of the inner fan is recovered; and after the compressor is shut down for more than 3min in a protection manner, when the temperature T of the indoor coil is detected to be more than or equal to 8 ℃ for continuously 30s or the temperature T of the indoor coil is detected to be more than or equal to 10 ℃, controlling the air conditioning unit to quit the shutdown protection and restore the normal operation.
In the embodiment, when the outdoor environment temperature is lower than the preset low-temperature, the inner fan of the air conditioner is controlled to operate at the preset high-wind-gear rotating speed; when an inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil pipe; when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed. In the embodiment, when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, the regulation and control of the inner fan are added, so that the continuous and stable operation of the unit is better ensured; a bypass module is added to a system of the air conditioner, so that the amount of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerant is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved, so that the technical problem that the operational reliability of the unit and the use comfort of the user are influenced by frequent anti-freezing protection of the conventional air conditioner is solved.
Referring to fig. 5, fig. 5 is a flowchart illustrating a third embodiment of the air conditioning control method according to the present invention, and the third embodiment of the air conditioning control method according to the present invention is proposed based on the first embodiment.
In the second embodiment, after the step S10, the method further includes:
step S20': and when the outdoor environment temperature meets the preset normal-temperature refrigerating temperature and the compressor of the air conditioner runs for the preset time, controlling the air conditioner to enter an anti-freezing protection detection mode.
It should be noted that, during the normal operation of the air conditioner after the air conditioner is turned on, the outdoor ambient temperature may be detected by a temperature sensor disposed at the outside of the air conditioner, or the current actual outdoor ambient temperature may be obtained through networking, and the detected/obtained outdoor ambient temperature is transmitted to the controller of the air conditioner. Acquiring the outdoor ambient temperature of the air conditioner in the cooling mode, wherein the outdoor ambient temperature can be set as TwCan pass through the outdoor environment temperature TwTo determine which refrigeration mode the air conditioner is in, the present embodiment explains with the low-temperature refrigeration mode and the normal-temperature refrigeration mode, and the outdoor environment temperature T corresponding to the low-temperature refrigeration mode can be setwIs-15 is not more than TwThe temperature is less than or equal to-2 ℃, and the outdoor environment temperature T corresponding to the normal temperature refrigeration mode can be setwIs Tw> -2 deg.C, the specific temperature setting is not limited in this example.
Specifically, the outdoor ambient temperature T corresponding to the normal-temperature refrigeration modewIs Tw-2 deg.C, i.e. the preset normal temperature refrigeration temperature can be greater than-2 deg.C, and the outdoor ambient temperature TwThe air conditioner is in a normal-temperature refrigeration mode when the preset normal-temperature refrigeration temperature is met, and a compressor of the air conditioner operatesAnd controlling the air conditioner to enter an anti-freezing protection detection mode within preset time, namely, after the compressor continuously operates for 6min, entering the anti-freezing protection detection mode, and starting to detect the anti-freezing protection. The specific time value of the preset time for the compressor to operate is not limited in this embodiment.
Step S30': and when the air conditioner is in the anti-freezing protection detection mode, controlling a first electronic expansion valve in the air conditioner to be locked.
It is easy to understand that, when the air conditioner is started in the normal-temperature refrigeration mode, the first electronic expansion valve in the air conditioner system is locked, and the second electronic expansion valve in the air conditioner is controlled to operate in a preset return air superheat degree control mode.
It should be understood that when the air conditioner is in the anti-freezing protection detection mode, the indoor coil temperature of the air conditioner is obtained; when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, controlling the air conditioner to enter a shutdown protection mode, and controlling an inner fan of the air conditioner to operate at a preset windshield rotating speed; and after the compressor of the air conditioner runs for a first preset shutdown time in the shutdown protection mode, controlling the air conditioner to exit the shutdown protection mode when the temperature of the indoor coil pipe is detected to meet the preset exit protection temperature.
Specifically, when the temperature T of the indoor coil pipe is detected to be less than or equal to 2 ℃ and lasts for 60 seconds or the temperature T of the indoor coil pipe is detected to be less than or equal to 0 ℃, the air conditioning unit is controlled to enter shutdown protection, and the set windshield operation of the internal fan is recovered; and after the compressor is shut down for more than 3min in a protection manner, when the temperature T of the indoor coil is detected to be more than or equal to 8 ℃ for continuously 30s or the temperature T of the indoor coil is detected to be more than or equal to 10 ℃, controlling the air conditioning unit to quit the shutdown protection and restore the normal operation.
Step S40': and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode.
It should be noted that, when the air conditioner is started in the normal-temperature refrigeration mode, the first electronic expansion valve in the air conditioner system is locked, and the second electronic expansion valve in the air conditioner is controlled to operate in the preset return air superheat degree control mode.
Specifically, the present embodiment is explained in one of the return air superheat degree control modes of the second electronic expansion valve: detecting the actual return air superheat degree of the system in a refrigeration mode, wherein whether the exhaust temperature of the compressor is too high or too low can be judged by detecting the actual return air superheat degree of the system; and if the actual return air superheat degree meets a first preset condition, entering return air superheat degree control, wherein the return air superheat degree control refers to the following process: when the exhaust temperature of the compressor is judged to be too high or too low through the actual return air superheat degree of the system, obtaining the expected opening degree of the second electronic expansion valve according to the actual return air superheat degree of the system; calculating the current expected opening degree of the second electronic expansion valve according to the actual return air superheat degree, wherein when the actual return air superheat degree of the system is used for judging that the exhaust temperature of the compressor is too high or too low, the current expected opening degree of the second electronic expansion valve is calculated according to the actual return air superheat degree; and adjusting the opening degree of the second electronic expansion valve according to the current expected opening degree, wherein the opening degree of the second electronic expansion valve is adjusted according to the current expected opening degree of the second electronic expansion valve, so that the return air superheat degree and the exhaust air superheat degree of the system are restored to normal levels, and the exhaust temperature of the compressor is restored to the normal levels.
It is easy to understand that, the second electronic expansion valve in the air conditioner is controlled to operate in a preset return air superheat degree control mode, so that when the exhaust temperature of the compressor is too high or too low, the opening degree of the second electronic expansion valve is adjusted through the return air superheat degree, and the return air superheat degree of the system is recovered to a normal safety level, so that the exhaust temperature of the compressor is recovered to the normal safety level, the problem that the exhaust temperature of the compressor is too high or too low is fundamentally solved, the damage to the system is avoided, and the safety is higher.
In this embodiment, when the outdoor environment temperature meets a preset normal temperature refrigeration temperature and a compressor of the air conditioner runs for a preset time, the air conditioner is controlled to enter an anti-freezing protection detection mode; when the air conditioner is in the anti-freezing protection detection mode, controlling a first electronic expansion valve in the air conditioner to be locked; and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode. In this embodiment, under different outdoor ambient temperature, carry out different control to the air conditioner, when predetermineeing normal atmospheric temperature refrigeration temperature that the air conditioner is in normal atmospheric temperature refrigeration, first electronic expansion valve deadlocking in the air conditioner, second electronic expansion valve is in the operation of predetermineeing back air superheat degree control mode in the air conditioner, adds the regulation and control of interior fan, better assurance unit lasts stable operation.
In addition, to achieve the above object, the present invention also provides an air conditioner including: a memory, a processor and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program being configured to implement the steps of the air conditioning control method as described above.
Since the air conditioner adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Furthermore, an embodiment of the present invention further provides a storage medium having an air conditioning control program stored thereon, where the air conditioning control program is executed by a processor to perform the steps of the air conditioning control method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Further, referring to fig. 6, an embodiment of the present invention further provides an air conditioning control apparatus, including:
and the obtaining module 10 is used for obtaining the outdoor environment temperature of the air conditioner in the refrigeration mode.
It should be noted that, in this embodiment, for an air conditioning unit with a low-temperature refrigeration function, an anti-freezing protection phenomenon frequently occurs in a process of operating the air conditioning unit under a low-temperature working condition, on one hand, frequent start and stop may affect operation reliability of the unit, and on the other hand, may affect use comfort of a user. In the embodiment, for the phenomenon that frequent freezing is caused in the actual low-temperature working condition testing process, the low-temperature working condition operation mode of the air conditioning unit may be divided into a low-temperature refrigeration mode and a normal-temperature refrigeration mode, which is not limited in this embodiment.
Specifically, in the normal operation process after the air conditioner is started, the outdoor environment temperature can be detected through a temperature sensor arranged outside the air conditioner, the current actual outdoor environment temperature can also be obtained through networking, and the detected/obtained outdoor environment temperature is transmitted to the controller of the air conditioner. Acquiring the outdoor ambient temperature of the air conditioner in the cooling mode, wherein the outdoor ambient temperature can be set as TwCan pass through the outdoor environment temperature TwTo determine which cooling mode the air conditioner is in, the present embodiment is described in a low-temperature cooling mode and a normal-temperature cooling mode.
It is easy to understand that, in order to ensure the stability of the air conditioner control and avoid unnecessary fluctuation, the steps of the air conditioner control method of each embodiment of the present invention are executed after the air conditioner is turned on for a certain period of time and then the outdoor ambient temperature is acquired. To ensure the accuracy of the data, the outdoor environment temperature may be acquired at preset time intervals, the plurality of outdoor environment temperatures acquired within a preset time period are subjected to periodic data averaging, the obtained average value is used as the finally detected/acquired outdoor environment temperature, for example, the preset time period is 1 minute (one period), 5 seconds are the preset time interval, data is read/acquired once every 5 seconds, 12 data are acquired for 1 minute, the 12 data are subjected to average value processing, and the obtained final value is used as the finally detected/acquired outdoor environment temperature for the operation of the subsequent steps.
And the detection module 20 is used for controlling the air conditioner to enter an anti-freezing protection detection mode when the outdoor environment temperature meets the preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for the preset time.
It should be understood that the outdoor ambient temperature T of the air conditioner in the cooling mode is obtainedwCan pass through the outdoor environment temperature TwTo determine which cooling mode the air conditioner is in, the present embodiment is described in a low-temperature cooling mode and a normal-temperature cooling mode. In this embodiment, can be providedSetting outdoor environment temperature T corresponding to low-temperature refrigeration modewIs-15 is not more than TwThe temperature is less than or equal to-2 ℃, and the outdoor environment temperature T corresponding to the normal temperature refrigeration mode can be setwIs Tw> -2 deg.C, the specific temperature setting is not limited in this example.
Specifically, the outdoor ambient temperature T corresponding to the low-temperature refrigeration modewIs-15 is not more than TwThe temperature of the preset low-temperature refrigeration temperature is less than or equal to minus 2 ℃, namely the temperature range of the preset low-temperature refrigeration temperature can be between minus 15 ℃ and minus 2 DEG C]Outdoor ambient temperature TwThe method comprises the steps of meeting a preset low-temperature refrigeration temperature, namely being in a low-temperature refrigeration mode, controlling the air conditioner to enter an anti-freezing protection detection mode when the compressor of the air conditioner runs for a preset time, namely entering the anti-freezing protection detection mode after the compressor continuously runs for 6min, and starting to detect anti-freezing protection. The specific time value of the preset time for the compressor to operate is not limited in this embodiment.
The obtaining module 10 is further configured to obtain the temperature of the indoor coil of the air conditioner when the air conditioner is in the anti-freezing protection detection mode.
It should be noted that the compressor enters the anti-freezing protection detection mode after continuously operating for 6min to start detecting the anti-freezing protection, and at this time, the temperature of the indoor coil of the air conditioner needs to be acquired, and the subsequent air conditioner control is performed according to the temperature of the indoor coil of the air conditioner. Before the indoor coil temperature of the air conditioner is obtained again, the method further comprises the following steps: controlling a first electronic expansion valve in the air conditioner to operate for a first preset time at an initial opening degree, and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode; and after the first electronic expansion valve operates for a first preset time at an initial opening degree, executing the step of acquiring the temperature of the indoor coil of the air conditioner.
In particular, the outdoor ambient temperature TwAnd when the preset low-temperature refrigeration temperature is met, namely the air conditioner is in a low-temperature refrigeration mode, the compressor continuously operates for 6min and then enters an anti-freezing protection detection mode to start to detect anti-freezing protection. Starting the air conditioner in the low-temperature refrigeration mode, and obtaining the air conditioner after the opening degree of a first electronic expansion valve in the air conditioner system can be maintained for 2min to an initial opening degree of 300bThe temperature of the indoor coil pipe is adjusted according to the change of the temperature of the indoor coil pipe, the opening degree of the first electronic expansion valve is adjusted, and the second electronic expansion valve can be controlled according to a preset return air superheat degree control mode, wherein the initial opening degree of the first electronic expansion valve is not limited in the embodiment.
And the adjusting module 30 is used for adjusting the opening of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil temperature.
It should be understood that, under different outdoor environment temperatures, different controls are executed on the air conditioner, and when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, the regulation control of the inner fan is added, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved.
It is easy to understand that the process of adjusting the opening degree of the first electronic expansion valve, the operating frequency of the compressor and the rotating speed of the internal fan of the air conditioner according to the outdoor environment temperature and the indoor coil temperature may be: when the outdoor environment temperature is lower than the preset low-temperature, controlling an inner fan of the air conditioner to operate at a preset high-wind-gear rotating speed; when an inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil pipe; when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
Specifically, referring to fig. 3, fig. 3 is a schematic diagram of a system of an air conditioner according to an embodiment of the present invention, where the system of the air conditioner may include a compressor, a low-pressure switch, a high-pressure switch, an exhaust temperature sensing bulb, an intake temperature sensing bulb, a four-way valve, a finned tube condenser, an external coil temperature, an environmental temperature sensing bulb, a plurality of filters, a first electronic expansion valve, a second electronic expansion valve, a check valve, an electric heating module, an internal coil, and a finned tube evaporator. The compressor is connected with the finned tube condenser and the finned tube evaporator through the four-way valve respectively, the flow direction of the refrigerant is shown by arrows in fig. 3, wherein solid arrows represent a refrigerating flow direction, dotted arrows represent a heating flow direction, solid loops can represent refrigerating loops, and dotted loops can represent heating loops. Under different outer rings, the regulation control of the inner fan is added, so that the continuous and stable operation of the unit is better ensured. A bypass module is added to a system of the air conditioner, so that the amount of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerant is ensured; meanwhile, the reliable operation of the air conditioning unit is better ensured.
Specifically, the outdoor ambient temperature T is detected in the cooling modewWhen the temperature is less than or equal to minus 2 ℃, an inner fan of the air conditioner can operate according to the high-wind-level rotating speed; and acquiring the temperature T of the indoor coil of the air conditioner, and controlling the opening degree of the first electronic expansion valve through the temperature T of the indoor coil. When the temperature T of the indoor coil pipe is detected to be less than or equal to 2 ℃ and lasts for 60s or the temperature T of the indoor coil pipe is detected to be less than or equal to 0 ℃, the air conditioning unit is controlled to enter shutdown protection, and the set windshield operation of the inner fan is recovered; and after the compressor is shut down for more than 3min in a protection manner, when the temperature T of the indoor coil is detected to be more than or equal to 8 ℃ for continuously 30s or the temperature T of the indoor coil is detected to be more than or equal to 10 ℃, controlling the air conditioning unit to quit the shutdown protection and restore the normal operation.
In this embodiment, the air conditioner control device includes: the acquiring module 10 is used for acquiring the outdoor environment temperature of the air conditioner in a refrigeration mode; the detection module 20 is configured to control the air conditioner to enter an anti-freezing protection detection mode when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and a compressor of the air conditioner runs for a preset time; the obtaining module 10 is further configured to obtain an indoor coil temperature of the air conditioner when the air conditioner is in the anti-freezing protection detection mode; and the adjusting module 30 is used for adjusting the opening of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil temperature. In the embodiment, different controls are executed on the air conditioner at different outdoor environment temperatures, and the adjustment control of the inner fan is added when the low-temperature refrigeration temperature is preset, namely the air conditioner is in low-temperature refrigeration, so that the continuous and stable operation of the unit is better ensured; the system of the air conditioner is additionally provided with a first electronic expansion valve, so that the quantity of circulating refrigerants entering an evaporator is adjusted under a low-temperature working condition, and the heat exchange effect of the refrigerants is ensured; the stable and reliable operation of the unit under the low-temperature working condition is ensured, and the use comfort of a user is improved, so that the technical problem that the operational reliability of the unit and the use comfort of the user are influenced by frequent anti-freezing protection of the conventional air conditioner is solved.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may be referred to an air conditioner control method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An air conditioning control method, characterized by comprising the steps of:
acquiring the outdoor environment temperature of the air conditioner in a refrigeration mode;
when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and the compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode;
when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner;
and adjusting the opening degree of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil pipe temperature.
2. The air conditioner control method as claimed in claim 1, wherein said step of obtaining the temperature of the indoor coil of the air conditioner is preceded by the steps of:
controlling a first electronic expansion valve in the air conditioner to operate for a first preset time at an initial opening degree, and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode;
and after the first electronic expansion valve operates for a first preset time at an initial opening degree, executing the step of acquiring the temperature of the indoor coil of the air conditioner.
3. The air conditioner controlling method as claimed in claim 1, wherein the step of adjusting the opening degree of the first electronic expansion valve, the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the outdoor ambient temperature and the indoor coil temperature comprises:
when the outdoor environment temperature is lower than the preset low-temperature, controlling an inner fan of the air conditioner to operate at a preset high-wind-gear rotating speed;
when an inner fan of the air conditioner runs at a preset high-wind-gear rotating speed, adjusting the opening degree of a first electronic expansion valve of the air conditioner according to the temperature of the indoor coil pipe;
when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
4. The air conditioning control method of claim 3, wherein the step of adjusting the opening degree of the first electronic expansion valve of the air conditioner according to the indoor coil temperature comprises:
when the temperature of the indoor coil pipe is lower than a first preset inner coil temperature, controlling the first electronic expansion valve to adjust according to a preset opening increasing mode based on the initial opening;
when the temperature of the indoor coil pipe is greater than or equal to the first preset inner disc temperature and less than or equal to the second preset inner disc temperature, controlling the first electronic expansion valve to operate at the current opening degree, wherein the first preset inner disc temperature is less than the second preset inner disc temperature;
and when the temperature of the indoor coil pipe is greater than the second preset inner coil pipe temperature, controlling the first electronic expansion valve to adjust according to a preset opening reducing mode based on the current opening.
5. The method as claimed in claim 3, wherein after the steps of controlling the air conditioner to enter a shutdown protection mode and controlling an internal fan of the air conditioner to operate at a preset windshield rotation speed when the indoor coil temperature is detected to meet a preset protection temperature, the method further comprises:
and after the compressor of the air conditioner runs for a first preset shutdown time in the shutdown protection mode, controlling the air conditioner to exit the shutdown protection mode when the temperature of the indoor coil pipe is detected to meet the preset exit protection temperature.
6. The air conditioner control method as claimed in claim 1, wherein after the step of obtaining the outdoor ambient temperature of the air conditioner in the cooling mode, the method further comprises:
when the outdoor environment temperature meets a preset normal-temperature refrigerating temperature and a compressor of the air conditioner runs for a preset time, controlling the air conditioner to enter an anti-freezing protection detection mode;
when the air conditioner is in the anti-freezing protection detection mode, controlling a first electronic expansion valve in the air conditioner to be locked;
and controlling a second electronic expansion valve in the air conditioner to operate in a preset return air superheat degree control mode.
7. The air conditioner controlling method as claimed in claim 6, wherein the step of controlling the air conditioner to enter the anti-freeze protection detecting mode includes:
when the air conditioner is in the anti-freezing protection detection mode, acquiring the temperature of an indoor coil of the air conditioner;
when the temperature of the indoor coil pipe is detected to meet the preset protection temperature, the air conditioner is controlled to enter a shutdown protection mode, and an inner fan of the air conditioner is controlled to run at the preset windshield rotating speed.
8. An air conditioning control device characterized by comprising:
the acquisition module is used for acquiring the outdoor environment temperature of the air conditioner in a refrigeration mode;
the detection module is used for controlling the air conditioner to enter an anti-freezing protection detection mode when the outdoor environment temperature meets a preset low-temperature refrigeration temperature and a compressor of the air conditioner runs for a preset time;
the acquisition module is further configured to acquire the temperature of the indoor coil of the air conditioner when the air conditioner is in the anti-freezing protection detection mode;
and the adjusting module is used for adjusting the opening of a first electronic expansion valve of the air conditioner, the running frequency of a compressor and the rotating speed of an inner fan according to the outdoor environment temperature and the indoor coil temperature.
9. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor, and an air conditioning control program stored on the memory and executable on the processor, the air conditioning control program configured to implement the steps of the air conditioning control method of any one of claims 1 to 7.
10. A storage medium having stored thereon an air conditioning control program which, when executed by a processor, implements the steps of the air conditioning control method according to any one of claims 1 to 7.
CN202110288607.4A 2021-03-17 2021-03-17 Air conditioner control method and device, air conditioner and storage medium Active CN112963934B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110288607.4A CN112963934B (en) 2021-03-17 2021-03-17 Air conditioner control method and device, air conditioner and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110288607.4A CN112963934B (en) 2021-03-17 2021-03-17 Air conditioner control method and device, air conditioner and storage medium

Publications (2)

Publication Number Publication Date
CN112963934A true CN112963934A (en) 2021-06-15
CN112963934B CN112963934B (en) 2022-10-04

Family

ID=76279171

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110288607.4A Active CN112963934B (en) 2021-03-17 2021-03-17 Air conditioner control method and device, air conditioner and storage medium

Country Status (1)

Country Link
CN (1) CN112963934B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113294885A (en) * 2021-06-22 2021-08-24 宁波奥克斯电气股份有限公司 Air conditioner control method and device, air conditioner and computer readable storage medium
CN113757793A (en) * 2021-09-27 2021-12-07 浙江中广电器股份有限公司 Air conditioner and cold air prevention operation control method thereof
CN114608145A (en) * 2022-02-24 2022-06-10 青岛海尔空调器有限总公司 Control method and control device for air conditioner, air conditioner and storage medium
CN114636225A (en) * 2022-03-18 2022-06-17 青岛海尔空调器有限总公司 Method and device for air conditioner freezing protection, air conditioner and storage medium
CN114719397A (en) * 2021-12-07 2022-07-08 青岛海尔空调电子有限公司 Control method of air conditioner
CN114811826A (en) * 2022-04-02 2022-07-29 珠海格力电器股份有限公司 Control method and device of air conditioning system, air conditioning system and storage medium

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012007800A (en) * 2010-06-24 2012-01-12 Mitsubishi Heavy Ind Ltd Heat pump type hot-water supply and air-conditioning system
JP2013117365A (en) * 2011-12-05 2013-06-13 Mitsubishi Electric Corp Air conditioner
CN104566645A (en) * 2014-12-08 2015-04-29 广东美的制冷设备有限公司 Multi-slit air conditioner, air conditioner anti-freezing protection method and air conditioner anti-freezing protection system
CN105627496A (en) * 2014-10-29 2016-06-01 青岛海尔空调器有限总公司 Low-temperature refrigerating control method of air conditioner and air conditioner
CN108019895A (en) * 2017-11-27 2018-05-11 青岛海尔空调电子有限公司 The control method of air-conditioning
US20180283751A1 (en) * 2015-09-30 2018-10-04 Lg Electronics Inc. Air conditioner and control method therefor
CN108917093A (en) * 2018-06-26 2018-11-30 Tcl空调器(中山)有限公司 A kind of control method and control device of air conditioner anti-frost protection
CN109269020A (en) * 2018-10-15 2019-01-25 珠海格力电器股份有限公司 Air conditioning control method, control device and air-conditioning
CN109945401A (en) * 2019-03-25 2019-06-28 广东美的制冷设备有限公司 Control method, device and the air conditioner of air conditioner
CN110030705A (en) * 2019-04-01 2019-07-19 广东美的暖通设备有限公司 The control method of multi-line system
CN110793159A (en) * 2019-11-19 2020-02-14 宁波奥克斯电气股份有限公司 Air conditioner refrigeration anti-freezing protection control method and device and air conditioner
CN111189179A (en) * 2018-11-14 2020-05-22 青岛海尔空调器有限总公司 Air conditioner and anti-freezing control method thereof
CN111442577A (en) * 2020-04-09 2020-07-24 宁波奥克斯电气股份有限公司 Air conditioner, low-temperature refrigeration control method thereof and computer readable storage medium
JP2020143885A (en) * 2019-03-08 2020-09-10 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Air conditioner and control method of the same
CN111750486A (en) * 2020-06-17 2020-10-09 宁波奥克斯电气股份有限公司 Control method and device for preventing internal machine from freezing and air conditioner
CN112178871A (en) * 2020-09-21 2021-01-05 广东Tcl智能暖通设备有限公司 Air conditioner control method, air conditioner and storage medium

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012007800A (en) * 2010-06-24 2012-01-12 Mitsubishi Heavy Ind Ltd Heat pump type hot-water supply and air-conditioning system
JP2013117365A (en) * 2011-12-05 2013-06-13 Mitsubishi Electric Corp Air conditioner
CN105627496A (en) * 2014-10-29 2016-06-01 青岛海尔空调器有限总公司 Low-temperature refrigerating control method of air conditioner and air conditioner
CN104566645A (en) * 2014-12-08 2015-04-29 广东美的制冷设备有限公司 Multi-slit air conditioner, air conditioner anti-freezing protection method and air conditioner anti-freezing protection system
US20180283751A1 (en) * 2015-09-30 2018-10-04 Lg Electronics Inc. Air conditioner and control method therefor
CN108019895A (en) * 2017-11-27 2018-05-11 青岛海尔空调电子有限公司 The control method of air-conditioning
CN108917093A (en) * 2018-06-26 2018-11-30 Tcl空调器(中山)有限公司 A kind of control method and control device of air conditioner anti-frost protection
CN109269020A (en) * 2018-10-15 2019-01-25 珠海格力电器股份有限公司 Air conditioning control method, control device and air-conditioning
CN111189179A (en) * 2018-11-14 2020-05-22 青岛海尔空调器有限总公司 Air conditioner and anti-freezing control method thereof
JP2020143885A (en) * 2019-03-08 2020-09-10 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Air conditioner and control method of the same
CN109945401A (en) * 2019-03-25 2019-06-28 广东美的制冷设备有限公司 Control method, device and the air conditioner of air conditioner
CN110030705A (en) * 2019-04-01 2019-07-19 广东美的暖通设备有限公司 The control method of multi-line system
CN110793159A (en) * 2019-11-19 2020-02-14 宁波奥克斯电气股份有限公司 Air conditioner refrigeration anti-freezing protection control method and device and air conditioner
CN111442577A (en) * 2020-04-09 2020-07-24 宁波奥克斯电气股份有限公司 Air conditioner, low-temperature refrigeration control method thereof and computer readable storage medium
CN111750486A (en) * 2020-06-17 2020-10-09 宁波奥克斯电气股份有限公司 Control method and device for preventing internal machine from freezing and air conditioner
CN112178871A (en) * 2020-09-21 2021-01-05 广东Tcl智能暖通设备有限公司 Air conditioner control method, air conditioner and storage medium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113294885A (en) * 2021-06-22 2021-08-24 宁波奥克斯电气股份有限公司 Air conditioner control method and device, air conditioner and computer readable storage medium
CN113294885B (en) * 2021-06-22 2022-04-19 宁波奥克斯电气股份有限公司 Air conditioner control method and device, air conditioner and computer readable storage medium
CN113757793A (en) * 2021-09-27 2021-12-07 浙江中广电器股份有限公司 Air conditioner and cold air prevention operation control method thereof
CN113757793B (en) * 2021-09-27 2022-09-30 浙江中广电器集团股份有限公司 Air conditioner and cold air prevention operation control method thereof
CN114719397A (en) * 2021-12-07 2022-07-08 青岛海尔空调电子有限公司 Control method of air conditioner
CN114719397B (en) * 2021-12-07 2023-11-24 青岛海尔空调电子有限公司 Control method of air conditioner
CN114608145A (en) * 2022-02-24 2022-06-10 青岛海尔空调器有限总公司 Control method and control device for air conditioner, air conditioner and storage medium
CN114608145B (en) * 2022-02-24 2024-02-20 青岛海尔空调器有限总公司 Control method and control device for air conditioner, air conditioner and storage medium
CN114636225A (en) * 2022-03-18 2022-06-17 青岛海尔空调器有限总公司 Method and device for air conditioner freezing protection, air conditioner and storage medium
CN114636225B (en) * 2022-03-18 2024-02-20 青岛海尔空调器有限总公司 Method and device for freezing protection of air conditioner, air conditioner and storage medium
CN114811826A (en) * 2022-04-02 2022-07-29 珠海格力电器股份有限公司 Control method and device of air conditioning system, air conditioning system and storage medium

Also Published As

Publication number Publication date
CN112963934B (en) 2022-10-04

Similar Documents

Publication Publication Date Title
CN112963934B (en) Air conditioner control method and device, air conditioner and storage medium
CN110454938B (en) Air conditioner and control method and device thereof
CN111059733B (en) Compressor unit control method and device
CN112050369B (en) Control method and control device for defrosting of air conditioner and air conditioner
CN111023455B (en) Defrosting control method, defrosting control device, air conditioner and readable storage medium
CN110749041B (en) Operation control method and system of air conditioner, air conditioner and storage medium
CN110645671A (en) Air conditioner high temperature prevention control method and device and air conditioner
CN111457556A (en) Anti-freezing protection method and device, air conditioner and computer readable storage medium
CN111457540B (en) Outdoor fan control method and device and air conditioner
CN115095955B (en) Air conditioner and defrosting control method thereof
CN111121222B (en) Fluorine-lack protection method for air conditioner, air conditioner and readable storage medium
CN112032941A (en) Control method of air conditioner
CN112050375A (en) Control method and control device for defrosting of air conditioner and air conditioner
CN112781286B (en) Defrosting control method and device and air-cooled module unit
CN111121223B (en) Fluorine-lacking protection method of air conditioner, air conditioner and storage medium
CN115183401B (en) Air conditioner and defrosting control method thereof
CN115013931B (en) Air conditioner, control method and device thereof and computer readable storage medium
JP3275776B2 (en) Control device for air conditioner
CN112797576B (en) High-temperature refrigeration air conditioner control method
CN115076908A (en) Air conditioner defrosting control method and device, air conditioner and electronic equipment
CN114935169A (en) Air conditioner, control method thereof, and computer-readable storage medium
CN114251777A (en) Natural wind identification control method and system of heat pump unit and storage medium
CN113739345A (en) Oil return control method, device, equipment and storage medium
CN114234383A (en) Air conditioner control method and device
CN110470003B (en) Control method and device for defrosting of air conditioner and air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant