CN111536677A - Air conditioner oil return control method, air conditioner and readable storage medium - Google Patents
Air conditioner oil return control method, air conditioner and readable storage medium Download PDFInfo
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- CN111536677A CN111536677A CN202010404268.7A CN202010404268A CN111536677A CN 111536677 A CN111536677 A CN 111536677A CN 202010404268 A CN202010404268 A CN 202010404268A CN 111536677 A CN111536677 A CN 111536677A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner oil return control method, an air conditioner and a readable storage medium, wherein the air conditioner oil return control method comprises the following steps: receiving an instruction of entering a high-temperature sterilization mode, and controlling the heat exchange assembly to operate in a heating mode; acquiring current operation parameters according to a preset rule, and determining whether to operate an oil return mode according to the current operation parameters; if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency; and controlling the compressor to run at the frequency increasing rate from the first running frequency to a preset oil return frequency. When the air conditioner enters the high-temperature sterilization mode and operates the oil return mode, the pressure of the air conditioner can be prevented from rising due to the fact that the frequency of the compressor rises too fast, and the reliability of the air conditioner is guaranteed.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to an air conditioner oil return control method, an air conditioner and a readable storage medium.
Background
At present, the air conditioner has high temperature sterilization mode mostly, and when the air conditioner got into high temperature sterilization mode, if when detecting during this period and need get into the oil return mode, conventional oil return means was compressor high frequency operation in order to improve the air conditioner circulation, brought the refrigeration oil in the heat transfer pipeline back to the compressor, but because the fluctuation of frequency, this process can influence the maintenance of heat transfer subassembly temperature, and air conditioner pressure rising can be brought in the improvement of abrupt frequency simultaneously, is unfavorable for the air conditioner reliability.
Therefore, it is necessary to provide an oil return control method for an air conditioner to solve the above technical problems.
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 oil return control method, an air conditioner and a readable storage medium, and aims to solve the problem that the air conditioner is unstable due to the fact that the air conditioner runs in an oil return mode when entering a high-temperature sterilization mode.
In order to achieve the purpose, the air conditioner oil return control method provided by the invention comprises the following steps:
receiving an instruction of entering a high-temperature sterilization mode, and controlling the heat exchange assembly to operate in a heating mode;
acquiring current operation parameters according to a preset rule, and determining whether to operate an oil return mode according to the current operation parameters;
if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency;
and controlling the compressor to run at the frequency increasing rate from the first running frequency to a preset oil return frequency.
Preferably, after the step of obtaining the current operation parameter according to the preset rule and determining whether to operate the oil return mode according to the current operation parameter, the method further includes:
if the operation oil return mode is determined, acquiring the temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and adjusting the air speed of the indoor fan according to the temperature change value.
Preferably, if the operation oil return mode is determined, the step of obtaining the temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of a preset time and adjusting the wind speed of the indoor fan according to the temperature change value includes:
if the oil return mode is determined to be operated, acquiring a temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and comparing the temperature change value with a first preset temperature threshold value and a second preset temperature threshold value, wherein the second preset temperature threshold value is larger than the first preset temperature threshold value;
if the temperature change value is larger than the second preset temperature threshold value, the air speed of the indoor fan is increased;
if the temperature change value is smaller than or equal to the second preset temperature threshold value and the temperature change value is larger than or equal to the first preset temperature threshold value, keeping the wind speed of the indoor fan unchanged;
and if the temperature change value is smaller than the first preset temperature threshold value, reducing the wind speed of the indoor fan.
Preferably, the step of obtaining the current operation parameter according to the preset rule and determining whether to operate the oil return mode according to the current operation parameter includes:
acquiring current operation parameters according to a preset rule, and determining whether an oil return mode needs to be operated;
if the oil return mode needs to be operated, acquiring the temperature of the indoor heat exchanger;
calculating a temperature difference value between the temperature of the indoor heat exchanger and a preset temperature, and judging whether the temperature difference value is smaller than a preset temperature threshold value or not;
and if the temperature difference is smaller than the preset temperature threshold, determining an oil return mode.
Preferably, if the operation oil return mode is determined, the step of obtaining a first operation frequency of the compressor and obtaining the frequency increasing rate according to the first operation frequency includes:
if the operation oil return mode is determined, calculating a frequency difference value between the first operation frequency and the preset oil return frequency;
determining the magnitude relation between the frequency difference value and a first preset frequency threshold and a second preset frequency threshold, wherein the second preset frequency threshold is larger than the first preset frequency threshold;
if the frequency difference value is larger than the second preset frequency threshold value, setting the frequency increasing rate as a first preset rate value;
if the frequency difference value is smaller than or equal to the second preset frequency threshold value and the frequency difference value is larger than or equal to the first preset frequency threshold value, setting the frequency increasing rate as a second preset rate value;
if the frequency difference value is smaller than the first preset frequency threshold value, setting the frequency-raising rate as a third preset rate value, wherein the first preset rate value is smaller than the second preset rate value, and the second preset rate value is smaller than the third preset rate value.
Preferably, the step of obtaining the current operation parameter according to the preset rule and determining whether the oil return mode needs to be operated includes:
acquiring a real-time oil level of the refrigeration oil in the compressor in real time;
judging whether the real-time oil level is lower than a preset oil level or not;
and if the real-time oil level is lower than the preset oil level, determining that the oil return mode needs to be operated.
Preferably, the step of receiving an instruction to enter a high-temperature sterilization mode and controlling the heat exchange assembly to operate in a heating mode includes:
receiving an instruction of entering a high-temperature sterilization mode, acquiring a second operating frequency of the compressor, and judging whether the second operating frequency is greater than a preset frequency;
and if the first operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode.
Preferably, after the step of receiving the instruction of entering the pasteurization mode, acquiring the second operating frequency of the compressor, and determining whether the second operating frequency is greater than a preset frequency, the method includes:
and if the second operating frequency is less than or equal to the preset frequency, entering an oil return mode for operation. The invention also provides a readable storage medium, wherein a computer program is stored on the readable storage medium, and when the computer program is executed by a processor, the steps of the air conditioner oil return control method are realized.
According to the technical scheme, the heat exchange assembly is controlled to operate in a heating mode by receiving an instruction of entering a high-temperature sterilization mode; acquiring current operation parameters according to a preset rule, and determining whether to operate an oil return mode according to the current operation parameters; if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency; and controlling the compressor to run at the frequency increasing rate from the first running frequency to a preset oil return frequency. When the air conditioner enters a high-temperature sterilization mode and runs an oil return mode, the pressure of the air conditioner is prevented from rising due to the fact that the frequency of the compressor rises too fast, and the reliability of the air conditioner is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an air conditioning architecture of a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a camera control method according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a camera control method according to a second embodiment of the present invention;
fig. 4 is a detailed flowchart of step S200 in the third embodiment of the camera control method according to the present invention;
fig. 5 is a detailed flowchart of step S110 in a fourth embodiment of the camera control method according to the present invention;
fig. 6 is a detailed flowchart of step S120 in a fifth embodiment of the camera control method according to the present invention;
fig. 7 is a detailed flowchart of step S400 in the sixth embodiment of the camera control method according to the present invention;
fig. 8 is a detailed flowchart of step S100 in the seventh embodiment of the camera control method 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
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention. It should be noted that the strong current hook and the weak current hook mentioned in the following embodiments are not provided for the type of the wire to which the hooks can be mounted, and are only for convenience of description.
The embodiment of the invention provides an air conditioner oil return control method, an air conditioner and a readable storage medium.
As shown in fig. 1, the method of the present invention is applicable to an air conditioner, which may include: a processor 1001, such as a 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 comprise a touch-sensitive pad, touch screen, keyboard, and the optional user interface 1003 may also comprise a standard wired, wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the air conditioner may be further configured with other sensors such as a barometer, a hygrometer and a thermometer, which are not described herein again.
Those skilled in the art will appreciate that the air conditioning 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, the 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 oil return control program.
The processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and perform the following operations:
receiving an instruction of entering a high-temperature sterilization mode, and controlling the heat exchange assembly to operate in a heating mode;
acquiring current operation parameters according to a preset rule, and determining whether to operate an oil return mode according to the current operation parameters;
if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency;
and controlling the compressor to run at the frequency increasing rate from the first running frequency to a preset oil return frequency.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
if the operation oil return mode is determined, acquiring the temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and adjusting the air speed of the indoor fan according to the temperature change value.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
if the oil return mode is determined to be operated, acquiring a temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and comparing the temperature change value with a first preset temperature threshold value and a second preset temperature threshold value, wherein the second preset temperature threshold value is larger than the first preset temperature threshold value;
if the temperature change value is larger than the second preset temperature threshold value, the air speed of the indoor fan is increased;
if the temperature change value is smaller than or equal to the second preset temperature threshold value and the temperature change value is larger than or equal to the first preset temperature threshold value, keeping the wind speed of the indoor fan unchanged;
and if the temperature change value is smaller than the first preset temperature threshold value, reducing the wind speed of the indoor fan.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
acquiring current operation parameters according to a preset rule, and determining whether an oil return mode needs to be operated;
if the oil return mode needs to be operated, acquiring the temperature of the indoor heat exchanger;
calculating a temperature difference value between the temperature of the indoor heat exchanger and a preset temperature, and judging whether the temperature difference value is smaller than a preset temperature threshold value or not;
and if the temperature difference is smaller than the preset temperature threshold, determining an oil return mode.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
if the operation oil return mode is determined, calculating a frequency difference value between the first operation frequency and the preset oil return frequency;
determining the magnitude relation between the frequency difference value and a first preset frequency threshold and a second preset frequency threshold, wherein the second preset frequency threshold is larger than the first preset frequency threshold;
if the frequency difference value is larger than the second preset frequency threshold value, setting the frequency increasing rate as a first preset rate value;
if the frequency difference value is smaller than or equal to the second preset frequency threshold value and the frequency difference value is larger than or equal to the first preset frequency threshold value, setting the frequency increasing rate as a second preset rate value;
if the frequency difference value is smaller than the first preset frequency threshold value, setting the frequency-raising rate as a third preset rate value, wherein the first preset rate value is smaller than the second preset rate value, and the second preset rate value is smaller than the third preset rate value.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
acquiring a real-time oil level of the refrigeration oil in the compressor in real time;
judging whether the real-time oil level is lower than a preset oil level or not;
and if the real-time oil level is lower than the preset oil level, determining that the oil return mode needs to be operated.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
receiving an instruction of entering a high-temperature sterilization mode, acquiring a second operating frequency of the compressor, and judging whether the second operating frequency is greater than a preset frequency;
and if the first operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode.
Further, the processor 1001 may be configured to call the air conditioner oil return control program stored in the memory 1005, and further perform the following operations:
and if the second operating frequency is less than or equal to the preset frequency, entering an oil return mode for operation.
Based on the hardware structure, the invention provides various embodiments of the air conditioner oil return control method and the refrigerator control method.
Fig. 2 is a flowchart illustrating an oil return control method of an air conditioner according to a first embodiment of the present invention. The air conditioner oil return control method comprises the following steps:
s100, receiving an instruction of entering a high-temperature sterilization mode, and controlling a heat exchange assembly to operate in a heating mode;
specifically, the user can send the instruction that gets into the pasteurization mode through the remote controller to the air conditioner, the air conditioner obtains when getting into the pasteurization mode's instruction, the air conditioner begins to carry out the pasteurization function, the air conditioner carries out the pasteurization function specifically can include following stage, respectively for refrigeration stage, frosting stage, defrosting stage, high temperature steam stage, high temperature degerming stage and drying stage. And when the air conditioner enters a high-temperature sterilization stage, controlling the heat exchange assembly to operate in a heating mode. The heat exchange assembly may include an indoor heat exchanger, an outdoor heat exchanger, a compressor, a four-way valve, etc. The heating mode is to control the on-off state of the four-way valve, so that the indoor heat exchanger radiates heat to the outside, and the outdoor heat exchanger absorbs the outside heat.
Before controlling the heat exchange assembly to operate in a heating mode, acquiring a second operating frequency of a compressor, comparing the second operating frequency with a preset frequency, and judging whether the second operating frequency is greater than the preset frequency; if the second operating frequency is less than or equal to the preset frequency, the second operating frequency of the compressor is very low at the moment, the air conditioner does not need to judge whether to enter an oil return mode, the air conditioner directly enters the oil return mode to operate, after the oil return mode is finished, the heat exchange assembly is controlled to operate in a heating mode, and the air conditioner does not enter the oil return mode to operate after the heat exchange assembly is controlled to operate in the heating mode, so that the problem that the pressure of the air conditioner is increased due to the fact that the second operating frequency of the compressor is too low after the heat exchange assembly is controlled to operate in the heating mode when the oil return mode is entered is solved.
And if the second operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode, namely, the air conditioner enters a high-temperature sterilization stage. At the moment, the air conditioner can enter a high-temperature sterilization stage, then judges whether the air conditioner needs to enter an oil return mode, and when the air conditioner needs to enter the oil return mode, adjusts the frequency of the compressor to enter the oil return mode.
Step S110, obtaining current operation parameters according to preset rules, and determining whether to operate an oil return mode according to the current operation parameters;
specifically, after the air conditioner control heat exchange assembly operates in the heating mode, current operating parameters need to be acquired so as to determine whether the oil return mode needs to be operated according to the current operating parameters, and when the oil return mode needs to be operated, whether the oil return mode needs to be operated is determined. The operating parameters may include the level of chilled oil in the compressor, the duration of the heat exchange assembly in heating mode, etc. When the operation parameter is the oil level of the refrigeration oil in the compressor, after the real-time oil level of the refrigeration oil in the compressor is obtained, whether the real-time oil level is lower than a preset oil level or not is judged, and if the real-time oil level is lower than the preset oil level, the air conditioner needs to operate an oil return mode at the moment. And when the operation parameter is the continuous operation time of the compressor, judging whether the continuous operation time is greater than the preset operation time, and if the continuous operation time is greater than the preset operation time, the air conditioner needs to operate an oil return mode. After determining that the air conditioner needs to operate the oil return mode, determining whether to operate the oil return mode may specifically be: the method comprises the steps of obtaining the current temperature of the indoor heat exchanger, judging whether the temperature difference value is smaller than a preset temperature threshold value or not by calculating the temperature difference value between the temperature of the indoor heat exchanger and the preset temperature, and determining an oil return mode if the temperature difference value is smaller than the preset temperature threshold value.
Step S120, if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency;
if the oil return mode is determined not to be operated, no treatment is carried out;
and step S130, controlling the compressor to run by increasing the frequency increasing rate from the first running frequency to a preset oil return frequency.
Specifically, if the operation oil return mode is determined, a first operation frequency of the current compressor is obtained, where the first operation frequency corresponds to the frequency increasing rate, and a technician may set the corresponding frequency increasing rate for different first operation frequencies. In this embodiment, after obtaining a first operating frequency of the compressor, a frequency difference between the first operating frequency and the preset oil return frequency is calculated, and a corresponding frequency increasing rate is determined according to the frequency difference, for example: when the frequency difference is larger than 10, controlling the compressor to increase to a preset oil return frequency at a first speed value; when the frequency difference is greater than or equal to 5 and less than or equal to 10, controlling the compressor to increase to a preset oil return frequency at a second speed value; and when the frequency is less than 5, controlling the compressor to increase to a preset oil return frequency at a third speed value. The air conditioner can be enabled to gradually increase the speed of the compressor according to the frequency increasing speed set by a technician when the air conditioner operates in the oil return mode at the high-temperature sterilization stage, so that the instability of the air conditioner caused by the too large frequency fluctuation of the compressor is prevented.
In this embodiment, when the air conditioner enters the high-temperature sterilization stage and the operation oil return mode is determined, the first operation frequency of the compressor is obtained, the frequency-increasing rate is obtained according to the first operation frequency, the compressor is controlled to increase to the preset oil return frequency at the frequency-increasing rate, the situation that the system pressure is increased due to the fact that the frequency is increased too fast when the compressor operates the oil return mode can be avoided, and the service life and the stability of the product are prolonged.
Further, a second embodiment is proposed based on the first embodiment, and referring to fig. 3, in this embodiment, after the step S110, the method further includes:
step S200, if the oil return mode is determined to operate, acquiring the temperature change value of the indoor heat exchanger of the heat exchange assembly within a preset time period at intervals of preset time, and adjusting the air speed of the indoor fan according to the temperature change value.
Specifically, in order to implement step S200, a temperature sensor is disposed on the heat exchange assembly, a temperature change value of the heat exchange assembly in a preset time period is obtained every interval of preset time, and the air conditioner can adjust the air speed of the indoor fan according to the temperature change value. Technicians can set an indoor fan air speed adjusting scheme corresponding to the temperature change value so as to maintain the temperature stability of the heat exchange assembly.
Further, a third embodiment is proposed based on the second embodiment, and referring to fig. 4, in this embodiment, the step S200 includes:
step S300, if an oil return mode is determined to operate, acquiring a temperature change value of an indoor heat exchanger of the heat exchange assembly within a preset time period at intervals of preset time, and comparing the temperature change value with a first preset temperature threshold and a second preset temperature threshold, wherein the second preset temperature threshold is greater than the first preset temperature threshold;
specifically, the technical staff can set a first preset temperature threshold and a second preset temperature threshold, and the air conditioner acquires the temperature change value of the heat exchange assembly through preset time at intervals and compares the temperature change value with the first preset temperature threshold and the second preset temperature threshold to acquire an indoor fan air speed adjusting scheme corresponding to the temperature change value.
Step S310, if the temperature change value is larger than the second preset temperature threshold value, the wind speed of the indoor fan is increased;
specifically, when the temperature variation value is greater than the second preset temperature threshold value, the temperature of the heat exchange assembly is greatly increased when the air conditioner operates in an oil return mode in a high-temperature sterilization stage, and the air speed of the indoor fan is increased at the moment so as to reduce the temperature of the heat exchange assembly. For example: and when the temperature change value is more than 1 ℃, increasing the wind speed of the indoor fan by 10 RPM.
Step S320, if the temperature change value is smaller than or equal to the second preset temperature threshold value and the temperature change value is larger than or equal to the first preset temperature threshold value, keeping the wind speed of the indoor fan unchanged;
specifically, when the temperature change value is smaller than or equal to the second preset temperature threshold value and the temperature change value is larger than or equal to the first preset temperature threshold value, it is indicated that the temperature change of the heat exchange assembly is not large when the air conditioner operates in an oil return mode at a high-temperature sterilization stage, and at this time, the air speed of the inner fan is kept unchanged. For example: and when the temperature change value is less than or equal to 1 ℃ and greater than or equal to 0 ℃, keeping the wind speed of the inner fan unchanged.
And S330, if the temperature change value is smaller than the first preset temperature threshold value, reducing the wind speed of the indoor fan.
Specifically, when the temperature variation value is smaller than the first preset temperature threshold value, the temperature of the heat exchange assembly is reduced when the air conditioner operates in an oil return mode at a high-temperature sterilization stage, and the air speed of the indoor fan is reduced at the moment so as to improve the temperature of the heat exchange assembly. For example: and when the temperature change value is less than 0 ℃, reducing the wind speed of the indoor fan by 10 RPM.
In this embodiment, every interval is acquireed for the preset time the temperature variation value of heat exchange assembly in the time quantum of predetermineeing, and according to the wind speed of temperature variation value regulation indoor fan can maintain heat exchange assembly's temperature is stable, and the heat exchange assembly temperature that causes when avoiding air conditioner operation oil return mode is undulant to influence pasteurization's effect.
Further, a fourth embodiment is proposed based on the first embodiment, and referring to fig. 5, in this embodiment, the step S110 includes:
step S400, obtaining current operation parameters according to preset rules and determining whether an oil return mode needs to be operated or not;
specifically, the operation parameter may include an oil level of the refrigerant oil in the compressor, an operation time of the compressor, and the like. In order to implement step S400, an oil level detection device may be disposed in the compressor, the preset rule is that the oil level detection device detects an oil level of the refrigeration oil in the compressor in real time, after the oil level detection device obtains the current oil level of the refrigeration oil in the compressor, it is determined whether the oil level is lower than a preset oil level, if the oil level is lower than the preset oil level, it indicates that the refrigeration oil in the compressor is less at this time, and the air conditioner needs to operate an oil return mode at this time. In order to implement step S400, a timing device may be further disposed in the compressor, the preset rule is that the timing device detects the operation time of the compressor at preset time intervals, the timing device is configured to detect the operation time of the compressor, after the timing device obtains the current operation time of the compressor, it is determined whether the operation time is greater than the preset operation time, if the operation time is greater than the preset operation time, it is determined that the compressor may have operated for a long time, the refrigerant oil in the compressor may decrease due to long-time operation, and at this time, the air conditioner needs to operate an oil return mode.
Step S410, if an oil return mode needs to be operated, acquiring the temperature of the indoor heat exchanger;
if the oil return mode does not need to be operated, no treatment is carried out;
step S420, calculating a temperature difference value between the temperature of the indoor heat exchanger and a preset temperature, and judging whether the temperature difference value is smaller than a preset temperature threshold value;
step S430, if the temperature difference is smaller than the preset temperature threshold, determining to operate an oil return mode;
and if the temperature difference is greater than or equal to the preset temperature threshold, not operating the oil return mode.
Specifically, confirm the air conditioner needs to operate the oil return mode after, still need confirm whether can operate the oil return mode, can be through obtaining the heat exchange assembly temperature to the calculation obtains the temperature difference of heat exchange assembly temperature and preset temperature, preset temperature can be the heat exchange assembly temperature when the air conditioner only carries out the pasteurization stage, will temperature difference and preset temperature threshold value carry out the comparison. If the temperature difference is smaller than the preset temperature threshold, the temperature change of the heat exchange assembly at the moment is smaller than the preset temperature threshold, and the oil return mode can be operated because the temperature change is smaller than the preset temperature threshold compared with the temperature of the heat exchange assembly when the air conditioner only carries out the high-temperature sterilization stage. For example: the preset temperature threshold is 3 ℃, and when the temperature difference is less than 3 ℃, an oil return mode is operated; and when the temperature difference is greater than or equal to 3 ℃, the temperature change is large, and the oil return mode is not operated.
In this embodiment, whether the oil return mode needs to be operated is determined by acquiring the operation parameters, and then the temperature difference value between the temperature of the heat exchange assembly and the preset temperature is compared with the preset temperature threshold value to determine whether the oil return mode can be operated, so that the phenomenon that the temperature of the indoor heat exchanger fluctuates greatly is avoided, and the high-temperature sterilization effect is influenced.
Further, a fifth embodiment is proposed based on the fourth embodiment, and referring to fig. 6, in this embodiment, the step S120 includes:
step S500, if an operation oil return mode is determined, calculating a frequency difference value between the first operation frequency and the preset oil return frequency;
step S510, determining a magnitude relation between the frequency difference and a first preset frequency threshold and a second preset frequency threshold, where the second preset frequency threshold is greater than the first preset frequency threshold;
specifically, if the operation oil return mode is determined, a first operation frequency of the current compressor is obtained, a frequency difference value between the first operation frequency and the preset oil return frequency is calculated, where the frequency difference value is preset oil return frequency-first operation frequency, and the compressor frequency is adjusted according to a size relationship between the frequency difference value and the first preset frequency threshold and the second preset frequency threshold.
Step S520, if the frequency difference is greater than the second preset frequency threshold, setting the frequency-up rate as a first preset rate value;
specifically, if the frequency difference is greater than the second preset frequency threshold, it indicates that the difference between the first operating frequency and the preset oil return frequency is large at this time, and at this time, the first speed value is obtained, the frequency-up speed is set as the first speed value, and the compressor is controlled to increase to the preset oil return frequency at the first speed value. For example: when the frequency difference is larger than 10, controlling the compressor to increase to a preset oil return frequency at a first speed value, wherein the first speed value can be 0.2 Hz/s;
step S530, if the frequency difference is smaller than or equal to the second preset frequency threshold and the frequency difference is greater than or equal to the first preset frequency threshold, setting the frequency-up rate as a second preset rate value;
specifically, if the frequency difference is smaller than or equal to the second preset frequency threshold and the frequency difference is greater than or equal to the first preset frequency threshold, a second speed value is obtained at this time, the frequency increase rate is set to be the second speed value, and the compressor is controlled to increase to the preset oil return frequency at the second speed value. For example: when the frequency difference value is greater than or equal to 5 and less than or equal to 10, controlling the compressor to increase to a preset oil return frequency at a second speed value, wherein the second speed value can be 0.5 Hz/s;
step S540, if the frequency difference is smaller than the first preset frequency threshold, setting the frequency-up rate as a third preset rate value, where the first preset rate value is smaller than the second preset rate value, and the second preset rate value is smaller than the third preset rate value.
Specifically, if the frequency difference is smaller than the first preset frequency threshold, it indicates that the difference between the first operating frequency and the preset oil return frequency is small, at this time, a third speed value is obtained, the frequency-up rate is set as the third speed value, and the compressor is controlled to increase to the preset oil return frequency by the third speed value. For example: and when the frequency is less than 5, controlling the compressor to increase to a preset oil return frequency at a third speed value, wherein the third speed value can be 1 Hz/s.
Preferably, the first speed value is less than the second speed value, and the second speed value is less than the third speed value.
In this embodiment, the frequency difference between the first operating frequency and the preset oil return frequency is calculated, the frequency of the compressor is adjusted according to the magnitude relation between the frequency difference and the first preset frequency threshold and the second preset frequency threshold, and the frequency increasing rate corresponding to the first operating frequency is set, so that the compressor is increased according to the corresponding frequency increasing rate, the pressure of the air conditioner is prevented from being increased due to too fast frequency increase of the compressor, and the reliability of the air conditioner is ensured.
Further, a sixth embodiment is proposed based on the fourth embodiment, and referring to fig. 7, in this embodiment, the step S400 includes:
step S600, acquiring the real-time oil level of the refrigeration oil in the compressor in real time;
step S610, judging whether the real-time oil level is lower than a preset oil level;
step S620, if the real-time oil level is lower than a preset oil level, determining that the oil return mode needs to be operated;
and if the real-time oil level is higher than or equal to the preset oil level, no treatment is carried out.
Specifically, in order to implement step S600, an oil level detection device may be disposed in the compressor, where the oil level detection device acquires a real-time oil level of the refrigeration oil in the current compressor in real time, and determines whether the real-time oil level is lower than a preset oil level, and if the real-time oil level is lower than the preset oil level, it indicates that the refrigeration oil in the compressor is less at this time, and the air conditioner needs to operate an oil return mode at this time.
Preferably, the operation parameter may further include an operation time of the compressor, and the like. The compressor can be further provided with a timing device, the timing device is used for detecting the running time of the compressor, after the timing device obtains the current running time of the air conditioner, whether the running time is larger than the preset running time or not is judged, if the running time is larger than the preset running time, the air conditioner can run for a long time, the refrigerating oil in the compressor can be reduced due to long-time running of the air conditioner, and at the moment, the air conditioner needs to run in an oil return mode.
Further, a seventh embodiment is proposed based on the first embodiment, and referring to fig. 8, in this embodiment, the step S100 includes:
step S700, receiving an instruction of entering a high-temperature sterilization mode, acquiring a second operating frequency of the compressor, and judging whether the second operating frequency is greater than a preset frequency;
step S710, if the second operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode.
Step S720, if the second operating frequency is less than or equal to the preset frequency, entering an oil return mode to operate.
Specifically, after receiving an instruction of entering a high-temperature sterilization mode, the air conditioner needs to acquire a second operating frequency of the compressor before entering the high-temperature sterilization stage, and judges whether the second operating frequency is greater than a preset frequency; and if the second operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode, namely, the air conditioner enters a high-temperature sterilization stage. At the moment, the second running frequency of the compressor is not less than the second preset frequency, the air conditioner can enter a high-temperature sterilization stage, then judges whether an oil return mode needs to be entered, and adjusts the frequency of the compressor to enter the oil return mode when the oil return mode needs to be entered.
Specifically, if second operating frequency is less than or equal to preset frequency, then it is very little to explain the second operating frequency of compressor this moment, this moment the air conditioner need not to judge whether need get into the oil return mode, directly gets into the oil return mode, wait after the oil return mode finishes, get into the high temperature degerming stage again to after getting into the high temperature degerming stage, can not get into the oil return mode again, so avoid the air conditioner to get into the high temperature degerming stage earlier, because the second operating frequency of compressor is too low, when getting into the oil return mode, the operating frequency of compressor improves suddenly and causes air conditioner pressure to rise, influences the stability of air conditioner.
The invention also provides a readable storage medium, which stores a computer program, wherein the computer program, when executed by a processing unit, implements the steps of the air conditioner oil return control method or, when executed by the processing unit, implements the steps of the refrigerator control method.
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 description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An air conditioner oil return control method is characterized by comprising the following steps:
receiving an instruction of entering a high-temperature sterilization mode, and controlling the heat exchange assembly to operate in a heating mode;
acquiring current operation parameters according to a preset rule, and determining whether to operate an oil return mode according to the current operation parameters;
if the operation oil return mode is determined, acquiring a first operation frequency of the compressor, and acquiring a frequency raising rate according to the first operation frequency;
and controlling the compressor to run at the frequency increasing rate from the first running frequency to a preset oil return frequency.
2. The air conditioner oil return control method according to claim 1, wherein after the step of obtaining the current operation parameter according to the preset rule and determining whether to operate the oil return mode according to the current operation parameter, the method further comprises:
if the operation oil return mode is determined, acquiring the temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and adjusting the air speed of the indoor fan according to the temperature change value.
3. The air conditioner oil return control method according to claim 2, wherein if the operation oil return mode is determined, the step of obtaining a temperature change value of an indoor heat exchanger of the heat exchange assembly in a preset time period at every preset time interval and adjusting the wind speed of an indoor fan according to the temperature change value comprises the steps of:
if the oil return mode is determined to be operated, acquiring a temperature change value of the indoor heat exchanger of the heat exchange assembly in a preset time period at intervals of preset time, and comparing the temperature change value with a first preset temperature threshold value and a second preset temperature threshold value, wherein the second preset temperature threshold value is larger than the first preset temperature threshold value;
if the temperature change value is larger than the second preset temperature threshold value, the air speed of the indoor fan is increased;
if the temperature change value is smaller than or equal to the second preset temperature threshold value and the temperature change value is larger than or equal to the first preset temperature threshold value, keeping the wind speed of the indoor fan unchanged;
and if the temperature change value is smaller than the first preset temperature threshold value, reducing the wind speed of the indoor fan.
4. The air conditioner oil return control method of claim 1, wherein the step of obtaining the current operation parameters according to the preset rules and determining whether to operate the oil return mode according to the current operation parameters comprises:
acquiring current operation parameters according to a preset rule, and determining whether an oil return mode needs to be operated;
if the oil return mode needs to be operated, acquiring the temperature of the indoor heat exchanger;
calculating a temperature difference value between the temperature of the indoor heat exchanger and a preset temperature, and judging whether the temperature difference value is smaller than a preset temperature threshold value or not;
and if the temperature difference is smaller than the preset temperature threshold, determining an oil return mode.
5. The air conditioner oil return control method of claim 4, wherein the step of obtaining a first operating frequency of the compressor if the operation oil return mode is determined, and obtaining the frequency increasing rate according to the first operating frequency comprises:
if the operation oil return mode is determined, calculating a frequency difference value between the first operation frequency and the preset oil return frequency;
determining the magnitude relation between the frequency difference value and a first preset frequency threshold and a second preset frequency threshold, wherein the second preset frequency threshold is larger than the first preset frequency threshold;
if the frequency difference value is larger than the second preset frequency threshold value, setting the frequency increasing rate as a first preset rate value;
if the frequency difference value is smaller than or equal to the second preset frequency threshold value and the frequency difference value is larger than or equal to the first preset frequency threshold value, setting the frequency increasing rate as a second preset rate value;
if the frequency difference value is smaller than the first preset frequency threshold value, setting the frequency-raising rate as a third preset rate value, wherein the first preset rate value is smaller than the second preset rate value, and the second preset rate value is smaller than the third preset rate value.
6. The air conditioner oil return control method of claim 4, wherein the step of obtaining the current operation parameters according to the preset rules and determining whether the oil return mode needs to be operated comprises the steps of:
acquiring a real-time oil level of the refrigeration oil in the compressor in real time;
judging whether the real-time oil level is lower than a preset oil level or not;
and if the real-time oil level is lower than the preset oil level, determining that the oil return mode needs to be operated.
7. The air conditioner oil return control method as claimed in claim 1, wherein the step of receiving an instruction to enter a high-temperature sterilization mode and controlling the heat exchange assembly to operate in a heating mode comprises:
receiving an instruction of entering a high-temperature sterilization mode, acquiring a second operating frequency of the compressor, and judging whether the second operating frequency is greater than a preset frequency;
and if the first operating frequency is greater than the preset frequency, controlling the heat exchange assembly to operate in a heating mode.
8. The air conditioner oil return control method of claim 7, wherein after the step of receiving the command for entering the high-temperature sterilization mode, obtaining the second operating frequency of the compressor, and determining whether the second operating frequency is greater than a preset frequency, the method comprises:
and if the second operating frequency is less than or equal to the preset frequency, entering an oil return mode for operation.
9. An air conditioner, characterized by comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of the air conditioner oil return control method according to any one of claims 1 to 8 when executing the computer program.
10. A readable storage medium, wherein the readable storage medium stores thereon a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the air conditioner oil return control method according to any one of claims 1 to 8.
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