CN111380147B - Variable frequency air conditioner overload control method and device and variable frequency air conditioner - Google Patents
Variable frequency air conditioner overload control method and device and variable frequency air conditioner Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/80—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
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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
- 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
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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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Abstract
本发明实施例提供一种变频空调过负荷控制方法、装置和变频空调器，涉及空调技术领域。该方法包括：获取变频空调器的室内换热器盘管的内盘实时温度，以及获取变频空调的压缩机的目标运行频率；判断内盘实时温度是否大于或等于压缩机的限频温度且小于压缩机的降频温度；若内盘实时温度大于或等于限频温度且小于降频温度，则根据目标运行频率，控制压缩机的吸气过热度控制区间，以使压缩机的电子膨胀阀的开度增大。该变频空调过负荷控制方法、装置和变频空调器能够在制热过负荷阶段使得使系统压力减小，提升压缩机的工作频率，从而达到更好的制热效果、提升使用体验。
Embodiments of the present invention provide an overload control method and device for an inverter air conditioner and an inverter air conditioner, which relate to the technical field of air conditioners. The method includes: acquiring the real-time temperature of the inner disk of the indoor heat exchanger coil of the variable frequency air conditioner, and acquiring the target operating frequency of the compressor of the variable frequency air conditioner; and judging whether the real-time temperature of the inner disk is greater than or equal to the frequency limit temperature of the compressor and less than the compressor If the real-time temperature of the inner disk is greater than or equal to the limit frequency temperature and less than the frequency reduction temperature, then according to the target operating frequency, control the suction superheat control range of the compressor to increase the opening of the electronic expansion valve of the compressor. big. The inverter air conditioner overload control method, device and inverter air conditioner can reduce the system pressure and increase the working frequency of the compressor during the heating overload stage, thereby achieving better heating effect and improving user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an overload control method and device for a variable frequency air conditioner and the variable frequency air conditioner.
Background
When the air conditioner is in heating operation, the compressor is in the process of operating towards the target operation frequency, and a heating overload control stage exists, wherein the operation frequency of the compressor is lower than the target operation frequency, so that the heating effect is poor, and the use experience is influenced.
Disclosure of Invention
The invention solves the problems that the heating effect of a compressor is poor and the use experience is influenced in the heating overload control stage.
In order to solve the above problems, embodiments of the present invention provide an inverter air conditioner overload control method and apparatus, and an inverter air conditioner.
In a first aspect, an embodiment provides an inverter air conditioner overload control method, which is used for an inverter air conditioner, and includes: acquiring the real-time temperature of an inner disc of an indoor heat exchanger coil of the variable frequency air conditioner, and acquiring the target operation frequency of a compressor of the variable frequency air conditioner; judging whether the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature of the compressor and less than the frequency reduction temperature of the compressor; and if the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, controlling a suction superheat degree control interval of the compressor according to the target operation frequency so as to increase the opening degree of an electronic expansion valve of the compressor.
The embodiment of the invention provides an overload control method of a variable frequency air conditioner, which comprises the following steps: and judging whether overload control is performed according to the real-time temperature of the inner disc of the air conditioner by acquiring the real-time temperature of the inner disc. When the air conditioner is in overload control, the control interval of the suction superheat degree is controlled according to the obtained target operation frequency of the compressor, so that the opening degree of the electronic expansion valve is increased, the system pressure is reduced, the working frequency of the compressor is improved, and a better heating effect is achieved.
In an alternative embodiment, the step of controlling the suction superheat control interval of the compressor to increase the opening degree of the electronic expansion valve of the compressor according to the target operating frequency includes: after the compressor operates for a first preset time, acquiring a first current operating frequency of the compressor; judging whether the first current running frequency is smaller than the target running frequency; and if the first current operating frequency is less than the target operating frequency, controlling a suction superheat control interval of the compressor, and adjusting the suction superheat control interval from an initial control interval to a first control interval so as to increase the opening degree of an electronic expansion valve of the compressor.
In an alternative embodiment, after the step of controlling the suction superheat control interval of the compressor, adjusting from the initial control interval to the first control interval to increase the opening degree of the electronic expansion valve of the compressor, the method further comprises: after the control interval of the suction superheat degree operates for a second preset time in the first control interval, acquiring a second current operating frequency of the compressor and acquiring a first exhaust temperature of the compressor; judging whether the second current operation frequency is smaller than the target operation frequency or not, and whether the first exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the first exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not; and if the second current operation frequency is less than the target operation frequency, and the first exhaust temperature is greater than or equal to a first preset temperature, or the difference between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the first control interval to a second control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the second control interval is less than the upper limit value of the first control interval.
In an alternative embodiment, the upper limit value of the second control interval is smaller than or equal to the lower limit value of the first control interval.
In an alternative embodiment, after the step of adjusting the suction superheat control interval from the first control interval to the second control interval to control the opening degree of the electronic expansion valve to increase, the method further comprises: after the control interval of the suction superheat degree operates for a third preset time in the second control interval, acquiring a third current operating frequency of the compressor and a second exhaust temperature of the compressor; judging whether the third current operation frequency is smaller than the target operation frequency or not, and whether the second exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the second exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not; and if the third current operation frequency is less than the target operation frequency, and the second exhaust temperature is greater than or equal to a first preset temperature, or the difference between the second exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the second control interval to a third control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the third control interval is less than the upper limit value of the second control interval.
In an alternative embodiment, the upper limit value of the third control interval is less than or equal to the lower limit value of the second control interval.
In an alternative embodiment, if the control interval of the suction superheat is the third control interval, the method further includes: judging whether the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
In an optional embodiment, the method further comprises: judging whether the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor or not; and if the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor, adjusting the control interval of the suction superheat degree to the initial control interval.
In an optional embodiment, the method further comprises: judging whether the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
In a second aspect, an embodiment provides an inverter air conditioner overload control device, for an inverter air conditioner, the device including: an acquisition module: the system comprises a temperature sensor, a temperature sensor and a controller, wherein the temperature sensor is used for acquiring real-time temperature of an inner disc of an indoor heat exchanger coil of the variable frequency air conditioner and acquiring target operation frequency of a compressor of the variable frequency air conditioner; a judging module: the temperature control device is used for judging whether the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature of the compressor and is less than the frequency reduction temperature of the compressor or not; a control module: and the control device is used for controlling the suction superheat degree control interval of the compressor according to the target operation frequency if the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, so that the opening degree of an electronic expansion valve of the compressor is increased.
The overload control device of the variable frequency air conditioner provided by the embodiment of the invention comprises the following components: and judging whether overload control is performed according to the real-time temperature of the inner disc of the air conditioner by acquiring the real-time temperature of the inner disc. When the air conditioner is in overload control, the control interval of the suction superheat degree is controlled according to the obtained target operation frequency of the compressor, so that the opening degree of the electronic expansion valve is increased, the system pressure is reduced, the working frequency of the compressor is improved, and a better heating effect is achieved.
In an alternative embodiment, the control module is further configured to: after the compressor operates for a first preset time, acquiring a first current operating frequency of the compressor; judging whether the first current running frequency is smaller than the target running frequency; and if the first current operating frequency is less than the target operating frequency, controlling a suction superheat control interval of the compressor, and adjusting the suction superheat control interval from an initial control interval to a first control interval so as to increase the opening degree of an electronic expansion valve of the compressor.
In an alternative embodiment, the control module is further configured to: after the control interval of the suction superheat degree operates for a second preset time in the first control interval, acquiring a second current operating frequency of the compressor and acquiring a first exhaust temperature of the compressor; judging whether the second current operation frequency is smaller than the target operation frequency or not, and whether the first exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the first exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not; if the second current operation frequency is less than the target operation frequency, and the first exhaust temperature is greater than or equal to a first preset temperature, or the difference between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the first control interval to a second control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the second control interval is smaller than the upper limit value of the first control interval; otherwise, controlling the compressor to keep running in the current state.
In an alternative embodiment, the control module is further configured to: after the control interval of the suction superheat degree operates for a third preset time in the second control interval, acquiring a third current operating frequency of the compressor and a second exhaust temperature of the compressor; judging whether the third current operation frequency is smaller than the target operation frequency or not, and whether the second exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the second exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not; and if the third current operation frequency is less than the target operation frequency, and the second exhaust temperature is greater than or equal to a first preset temperature, or the difference between the second exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the second control interval to a third control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the third control interval is less than the upper limit value of the second control interval.
In an alternative embodiment, if the control interval of the degree of superheat of the intake air is the third control interval, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
In an alternative embodiment, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor or not; and if the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor, adjusting the control interval of the suction superheat degree to the initial control interval.
In an alternative embodiment, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
In a third aspect, an embodiment provides an inverter air conditioner, including a controller, where the controller stores an inverter air conditioner overload control program, and when the inverter air conditioner overload control program is executed, the inverter air conditioner overload control program implements the method according to any one of the foregoing embodiments.
The variable frequency air conditioner provided by the embodiment of the invention judges whether overload control is performed according to the real-time inner disc temperature by acquiring the real-time inner disc temperature of the air conditioner. When the air conditioner is in overload control, the control interval of the suction superheat degree is controlled according to the obtained target operation frequency of the compressor, so that the opening degree of the electronic expansion valve is increased, the system pressure is reduced, the working frequency of the compressor is improved, and a better heating effect is achieved.
Drawings
Fig. 1 is a schematic block diagram of a structure of an inverter air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a flow of an inverter air conditioner overload control method according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating a flow of substeps S301 through substep S303 provided by an embodiment of the present invention;
fig. 4 is a schematic block diagram of a flow chart of sub-step S304 to sub-step S306 according to an embodiment of the present invention;
fig. 5 is a schematic block diagram of a flow from substep S307 to substep S309 provided by an embodiment of the present invention;
fig. 6 is a schematic block diagram of the flow of step S400 and step S500 provided in the embodiment of the present invention;
fig. 7 is a schematic block diagram of the flow of step S600 and step S700 provided in the embodiment of the present invention;
fig. 8 is a schematic block diagram of the flow of step S800 and step S900 according to an embodiment of the present invention;
fig. 9 is a block diagram schematically illustrating the configuration of the variable frequency air conditioner overload control apparatus of fig. 1.
Icon: 100-variable frequency air conditioner; 10-frequency conversion air conditioner overload control device; 11-an acquisition module; 12-a judgment module; 13-a control module; and 20, a controller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides an inverter air conditioner overload control method and an inverter air conditioner overload control apparatus 10, which are applied to an inverter air conditioner 100. The inverter air conditioner 100 includes an inverter air conditioner overload control device 10 and a controller 20. The inverter air conditioner overload control device 10 includes at least one software function module which can be stored in the controller 20 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of a server. The controller 20 is configured to execute executable modules stored therein, such as software functional modules and computer programs included in the inverter air conditioner overload control apparatus 10.
The controller 20 may be an integrated circuit chip having signal processing capabilities. The controller 20 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor. The controller 20 may also be any conventional processor or the like.
The controller 20 is programmed with an inverter air conditioner overload control program, and when the controller 20 receives an execution instruction, the inverter air conditioner overload control program is executed.
Referring to fig. 2, the method for controlling overload of an inverter air conditioner according to the embodiment of the present invention includes the following steps.
Step S100: the real-time temperature of the inner disc of the indoor heat exchanger coil of the inverter air conditioner 100 is obtained, and the target operation frequency of the compressor of the inverter air conditioner is obtained.
It should be noted that the real-time temperature of the inner plate of the indoor heat exchanger coil may be detected by a temperature sensor disposed in the middle of the indoor heat exchanger coil, and the target operating frequency of the compressor may be calculated by the air conditioner according to the current ambient temperature, and after the air conditioner starts heating, the controller 20 may calculate the target operating frequency of the compressor according to the load requirement.
After acquiring the real-time temperature and the target operating frequency of the inner disc, executing step S200: judging whether the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature of the compressor and less than the frequency reducing temperature of the compressor;
it should be noted that, in step S200, it is determined whether the air conditioner is in the overload and frequency-limited operation according to the real-time temperature of the inner disc, and when the real-time temperature of the inner disc is between the frequency-limited temperature and the frequency-reduced temperature, the compressor is in the heating overload control stage. The frequency limiting temperature and the frequency reducing temperature of the compressor can be preset by a system, and for the compressor, the compressor also has a preset shutdown temperature and a heating overload control release temperature, wherein the release temperature, the limit temperature, the frequency reducing temperature and the shutdown temperature are sequentially increased, and the values can be set according to different use scenes. The frequency-limited temperature range of the compressor can be 52-58 ℃ ("° c" is a temperature unit and represents centigrade), the frequency-reducing temperature range of the compressor can be 56-60 ℃, the shutdown temperature range of the compressor is 61-64 ℃, and the heating overload control release temperature range is 48-50 ℃. Of course, the above value range is only a reference, and the embodiments of the present invention do not specifically limit the ranges of the release temperature, the frequency limit temperature, the down-conversion temperature, and the shutdown temperature.
If the real-time temperature of the inner disk is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, executing step S300: and controlling a suction superheat control interval of the compressor according to the target operation frequency so as to increase the opening degree of an electronic expansion valve of the compressor.
Referring to fig. 3, in the embodiment of the present invention, the step S300 may include a sub-step S301, a sub-step S302, and a sub-step S303.
Substep S301: and acquiring a first current operating frequency of the compressor after the compressor operates for a first preset time.
In the sub-step S301, after the air conditioner operates for the first preset time, the first current operating frequency of the compressor is obtained, that is, the relationship between the current operating frequency of the compressor and the target operating frequency after the air conditioner operates for the first preset time is determined, so that when the current operating frequency of the compressor and the target operating frequency do not reach the expected relationship, the air conditioner is adjusted, and the operating efficiency of the air conditioner is improved. The first preset time may be 5 minutes, 6 minutes, and the like, and the specific value of the first preset time is not limited in the embodiment of the present invention.
Substep S302: and judging whether the first current running frequency is smaller than the target running frequency.
It should be noted that, the first current operation frequency of the compressor is the current operation frequency after the air conditioner operates for the first preset time, and in the sub-step S302, it is determined whether there is a difference between the operation frequency of the compressor and the target operation frequency after the air conditioner operates for the first preset time, that is, whether the first current operation frequency is less than the target operation frequency is determined. If the first current frequency is lower than the target operation frequency, it indicates that the compressor is not ramped up within the first preset time, i.e. the compressor is ramped up, and the electronic expansion valve may be in an over-regulation.
Meanwhile, it should be noted that, in the electronic expansion valve control, the suction superheat is controlled by using a range value in order to quickly stabilize the system. The inventors have found that, when the system region is stable, the actual superheat value tends to the upper limit of the interval of the range value. The inventor further finds that in the process of heating and starting the engine, because the refrigerant in the evaporator is not completely evaporated and liquid remains on the gas component and the pipeline, the superheat degree calculated by the system is low, and the electronic expansion valve enters certain over-close regulation. When the evaporation is complete, the liquid in the gas component is evaporated and absorbed, the suction superheat degree is too high, and the valve is slowly opened, so that the superheat degree tends to the target superheat degree interval, and the superheat degree tends to be higher toward the target superheat degree upper limit value in most cases. Finally, the temperature is stabilized near the upper limit value of the interval.
If the first current operating frequency is less than the target operating frequency, that is, the compressor does not reach the target operating frequency, then the sub-step S303 is executed: and controlling a suction superheat control interval of the compressor, and adjusting the suction superheat control interval from the initial control interval to a first control interval so as to increase the opening degree of an electronic expansion valve of the compressor. Otherwise, the compressor is controlled to keep running in the current state, namely the control interval of the suction superheat degree is the initial control interval.
It should be noted that the suction superheat can be used to control the opening of the electronic expansion valve, which can be calculated by the difference between the suction temperature of the compressor and the temperature of the defrosting sensor of the outdoor heat exchanger, and the following formula can be referred to:
X＝Ts-Tdef
wherein X represents the degree of superheat of intake air, TsIndicating the suction temperature, T, of the compressordefIndicating the outdoor heat exchanger defrost sensor temperature.
In sub-step S303, the suction superheat control interval of the compressor is adjusted from the initial control interval to the first control interval, so that the opening degree of the electronic expansion valve is increased, the system pressure is decreased, and the compressor continues to increase in frequency towards the target operation frequency. A control interval in which the suction superheat degree of the compressor is within a first preset time is set as an initial control interval, and when the substep S303 is executed, the initial control interval is adjusted to the first control interval so that the opening degree of the electronic expansion valve is increased and the frequency rising speed of the compressor is increased. Since the suction superheat of the compressor is stabilized near the upper limit of the control interval, when the initial control interval is adjusted to the first control interval, at least the upper limit of the initial control interval should be reduced to obtain the first control interval. For example, the initial control interval a of the degree of superheat of the intake air is [ a, b ], and the first control interval is [ c, d ], where d is smaller than b, and c is smaller than or equal to a. Alternatively, the degree of superheat of the intake air may be stabilized around the lower limit value of the initial control interval, such as setting the first control interval to [ a, a +1], or the like. Alternatively, the initial control interval may have an upper limit value in the range of 0 to 4 ℃ and a lower limit value in the range of-4 to 0 ℃.
Referring to fig. 4, in an alternative embodiment, after the control interval of the degree of superheat of the intake air is operated for the second preset time in the first control interval, the sub-step S304 is executed: a second current operating frequency of the compressor is obtained, and a first discharge temperature of the compressor is obtained. The second preset time may be 5 minutes, 6 minutes, and the like, and the specific value of the second preset time is not limited in the embodiment of the present invention.
After the above-described substep S303, the control interval of the suction superheat of the compressor is adjusted to the first control interval, and at this time, the opening degree of the electronic expansion valve is increased, the pressure of the system is decreased, and the operating frequency of the compressor is increased toward the target operating frequency. After the compressor is operated for the second preset time, the actual operating frequency of the compressor, i.e. the second current operating frequency in the sub-step S304, is obtained again so as to determine the relationship between the actual operating frequency and the target operating frequency. Meanwhile, in the substep S304, a first discharge temperature of the compressor is also obtained, and the adjustment of the control interval of the suction superheat degree needs to meet the limiting condition, so that the compressor can work safely. In the embodiment of the invention, the control interval of the suction superheat degree can be limited through the first exhaust temperature (or the exhaust superheat degree of the compressor), so that the control interval of the suction superheat degree is reasonably adjusted, and the use safety is ensured.
After acquiring the second current operating frequency and the first exhaust temperature, the substep S305 is executed: and judging whether the second current operation frequency is less than the target operation frequency or not, and whether the first exhaust temperature is greater than or equal to the first preset temperature or whether the difference value between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to the second preset temperature or not.
If the result of the substep S305 is yes, two conditions, one of which is that the operating frequency of the compressor is lower than the target operating frequency, need to be satisfied at the same time; and secondly, the first exhaust temperature meets a preset condition, namely, the first exhaust temperature is greater than or equal to a first preset temperature, or the difference between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature. That is, if the result of substep S305 is negative, there are two cases: one is that the second current operating frequency is equal to the target operating frequency; and the second is that the first exhaust temperature is lower than a first preset temperature, and the difference value between the first exhaust temperature and the real-time temperature of the inner disc is lower than a second preset temperature.
Meanwhile, it should also be noted that, in the sub-step S305, the difference between the first discharge temperature and the real-time inner disc temperature is a discharge superheat degree, that is, the discharge superheat degree cannot be too small, that is, the discharge superheat degree cannot be less than the second preset temperature, so as to ensure the working performance and safety of the compressor.
In addition, the first preset temperature and the second preset temperature can be set according to actual conditions, for example, the first preset temperature takes 90 ℃ and the second preset temperature takes 35 ℃.
If the result of the sub-step S305 is yes, that is, the second current operating frequency is lower than the target operating frequency, and the first exhaust temperature is greater than or equal to the first preset temperature, or the difference between the first exhaust temperature and the real-time inner-disc temperature is greater than or equal to the second preset temperature, then the sub-step S306 is executed: and adjusting the suction superheat control interval from the first control interval to a second control interval so as to control the opening degree of the electronic expansion valve to be increased.
Otherwise, controlling the compressor to keep running in the current state. That is, if the execution result of the above-described substep S305 is negative, the control interval of the suction superheat of the compressor is the first control interval.
It should be appreciated that in this sub-step S306, the upper limit value of the second control interval is smaller than the upper limit value of the first control interval. That is, at least the upper limit value of the first control interval should be reduced to obtain the second control interval. Further, since in the above-described sub-step S303, the control interval of the degree of superheat of the intake air has been adjusted to be near the lower limit value of the initial control interval, for example, the initial control interval [ a, b ] is adjusted to [ a, a +1], after the operation for the second preset time has elapsed, the degree of superheat of the intake air is stabilized substantially near the upper limit value of the first control interval, that is, more than a, less than a +1, and closer to a +1, for example, a + 0.75. When the first control interval is adjusted to the second control interval, the lower limit value of the initial control interval may be used as the upper limit value, and an appropriate value may be used as the lower limit value, for example, the second control interval is [ a-1, a ], so that the suction superheat degree is stabilized at a value less than a, and the suction superheat value during stabilization is further reduced, that is, the electronic expansion valve is increased, the system pressure is reduced, and the compressor is raised toward the target operation frequency.
Optionally, the upper limit value of the second control interval is smaller than or equal to the lower limit value of the first control interval, so that the degree of superheat of the inhaled air is smaller than that of the first control interval, a better frequency boosting effect is achieved, and user experience is improved.
Referring to fig. 5, in an alternative embodiment, after the control interval of the degree of superheat of the inspiration is operated for a third preset time in the second control interval, the sub-step S307 is executed: a third current operating frequency of the compressor is obtained, and a second discharge temperature of the compressor is obtained. The third preset time may be 5 minutes, 6 minutes, and the like, and the specific value of the third preset time is not limited in the embodiment of the present invention. In addition, the first preset time, the second preset time and the third preset time may be set to be the same or different.
After acquiring the third current operating frequency, performing the sub-step S308: and judging whether the third current operation frequency is less than the target operation frequency or not, and whether the second exhaust temperature is greater than or equal to the first preset temperature or whether the difference value between the second exhaust temperature and the real-time temperature of the inner disc is greater than or equal to the second preset temperature or not. And the difference value between the second exhaust temperature and the real-time temperature of the inner disc is the exhaust superheat degree of the compressor.
That is, in the sub-step S308, the relationship between the third current operating frequency and the target operating frequency is determined, and meanwhile, the heating effect of the compressor needs to be satisfied, that is, the exhaust temperature is greater than or equal to the first preset temperature (the exhaust temperature of the compressor cannot be too low), or the second exhaust superheat degree is greater than or equal to the second preset temperature (the exhaust superheat degree of the compressor cannot be too low).
It should be noted that, similar to the above-mentioned substep S305, the substep S308 determines the relationship between the current operating frequency of the compressor and the target operating frequency thereof, and determines whether the discharge temperature and the discharge superheat of the compressor are too low. In contrast, when the sub-step S308 is performed, the suction superheat degree of the compressor is operated in the second control interval for the third preset time, and compared with the operation in the first control interval, when the compressor is operated in the third control interval, the opening degree of the electronic expansion valve is increased, the frequency of the compressor is increased, and the heating effect of the air conditioner is better.
If the third current operating frequency is less than the target operating frequency, and the exhaust temperature is greater than or equal to the first preset temperature, or the difference between the exhaust temperature and the real-time temperature of the inner disc is greater than or equal to the second preset temperature, the substep S309 is executed: and adjusting the suction superheat control interval from the second control interval to a third control interval so as to control the opening degree of the electronic expansion valve to increase. Wherein the upper limit value of the third control interval is smaller than the upper limit value of the second control interval.
Otherwise, controlling the compressor to keep the current running state.
As described above, the upper limit value of the third control section is smaller than the upper limit value of the second control section, and the suction superheat degree can be stabilized at a lower value, so that the opening degree of the electronic expansion valve can be increased, and the frequency of the compressor can be increased. For example, the second control interval is a-1, a, which is adjusted to a-2, a-1 by substep S309, i.e., the suction superheat is further reduced.
Optionally, the upper limit value of the third control interval is less than or equal to the lower limit value of the second control interval.
Referring to fig. 6, when the compressor operates in the third control section, the inverter air conditioner overload control method may further include steps S400 and S500.
Step S400: and judging whether the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor.
If the real-time temperature of the inner disk is less than the frequency-reducing temperature of the compressor and is greater than or equal to the frequency-limiting temperature of the compressor, the step S500 is executed: and keeping the current control interval in the control interval for controlling the suction superheat degree.
It should be noted that, when the control interval of the suction superheat degree is the third control interval, if the real-time temperature of the inner disk is lower than the down-conversion temperature and is greater than or equal to the frequency-limiting temperature, the electronic expansion valve is controlled to maintain the current operation state, and at this time, the frequency of the compressor does not increase, so as to ensure the working performance of the compressor.
Referring to fig. 7, in an alternative embodiment, the method for controlling the overload of the inverter air conditioner may further include step S600 and step S700.
Step S600: and judging whether the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor or not.
As mentioned above, the heating overload control release temperature can be preset by the system, for example, in the range of 48-50 ℃, and the release temperature is less than the frequency limit temperature.
If the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor, the substep S700 is executed: and adjusting the control interval of the degree of superheat of the sucked air to the initial control interval.
The steps S600 and S700 are determination steps for exiting the overload control, and when the execution result of the step S600 is yes, the control section for controlling the degree of superheat of the intake air is the initial control section, that is, the overload control is exited. Otherwise, the method is executed according to the steps. The steps S600 and S700 may be performed after the sub-step S303, after any one of the sub-steps S304 to S309 is performed, or before the sub-step S is performed. The sequence of steps S600 and S700 in the above steps is not limited in the present invention.
Referring to fig. 8, in an alternative embodiment, the method for controlling the overload of the inverter air conditioner may further include step S800 and step S900.
Step S800: judging whether the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor;
if the real-time temperature of the inner disc is less than the frequency limit temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor, executing the step S900: and keeping the current control interval in the control interval for controlling the suction superheat degree.
In step S900, the control section for maintaining the suction superheat degree in the current control section means that the real-time inner disk temperature is decreased from the range between the limit frequency temperature and the step-down frequency temperature to the range between the release temperature and the limit frequency temperature when the opening degree of the electronic expansion valve is adjusted in the current control section. At the moment, the running frequency of the compressor is not limited, and the compressor can run to the target running frequency to meet the requirements of users. That is to say, the current suction superheat degree control interval can be well adapted to the current running state of the air conditioner, and the working frequency of the compressor and the use experience of a user are guaranteed.
The embodiment of the invention provides an overload control method of a variable frequency air conditioner, which comprises the following steps: and judging whether overload control is performed according to the real-time temperature of the inner disc of the air conditioner by acquiring the real-time temperature of the inner disc. When the air conditioner is in overload control, the control interval of the suction superheat degree is controlled according to the obtained target operation frequency of the compressor, so that the opening degree of the electronic expansion valve is increased, the system pressure is reduced, the working frequency of the compressor is improved, and a better heating effect is achieved.
Referring to fig. 9, an embodiment of the invention provides an overload control apparatus 10 for a variable frequency air conditioner, which includes an obtaining module 11, a determining module 12, and a control module 13.
The acquisition module 11: the method is used for acquiring the real-time temperature of the inner disc of the indoor heat exchanger coil of the inverter air conditioner 100 and acquiring the target operation frequency of the compressor of the inverter air conditioner.
In the embodiment of the present invention, the step S100 is executed by the obtaining module 11.
The judging module 12: and the real-time temperature of the inner disc is judged whether to be more than or equal to the frequency limiting temperature of the compressor and less than the frequency reduction temperature of the compressor.
In the embodiment of the present invention, the step S200 is executed by the determining module 12.
The control module 13: and the control device is used for controlling the suction superheat degree control interval of the compressor according to the target operation frequency if the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, so that the opening degree of an electronic expansion valve of the compressor is increased.
In the embodiment of the present invention, the step S300 is executed by the control module 13.
In an alternative embodiment, the control module is further configured to: after the compressor operates for a first preset time, acquiring a first current operating frequency of the compressor; judging whether the first current running frequency is smaller than the target running frequency; and if the first current operation frequency is less than the target operation frequency, controlling a suction superheat degree control interval of the compressor, and adjusting the suction superheat degree control interval from the initial control interval to the first control interval so as to increase the opening degree of an electronic expansion valve of the compressor.
In the embodiment of the present invention, the sub-step S301 to the sub-step S303 are executed by the control module 13.
In an alternative embodiment, the control module is further configured to: after the control interval of the suction superheat degree runs for a second preset time in the first control interval, acquiring a second current running frequency of the compressor and acquiring a first exhaust temperature of the compressor; judging whether the second current operation frequency is smaller than the target operation frequency or not, and whether the first exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the first exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not; and if the second current operation frequency is less than the target operation frequency, and the first exhaust temperature is greater than or equal to a first preset temperature, or the difference between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the first control interval to a second control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the second control interval is less than the upper limit value of the first control interval.
In the embodiment of the present invention, the above substeps 304 to substep S306 are executed by the control module 13.
In an alternative embodiment, the control module is further configured to: after the control interval of the suction superheat degree runs for a third preset time in a second control interval, acquiring a third current running frequency of the compressor and a second exhaust temperature of the compressor; judging whether the third current operation frequency is smaller than the target operation frequency or not, and whether the second exhaust temperature is larger than or equal to the first preset temperature or whether the difference value between the second exhaust temperature and the real-time temperature of the inner disc is larger than or equal to the second preset temperature or not; and if the third current operation frequency is less than the target operation frequency, and the second exhaust temperature is greater than or equal to the first preset temperature, or the difference between the second exhaust temperature and the real-time temperature of the inner disc is greater than or equal to the second preset temperature, adjusting the suction superheat degree control interval from the second control interval to a third control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the third control interval is less than the upper limit value of the second control interval.
In the embodiment of the present invention, the above sub-steps S307 to S309 are performed by the control module 13.
In an alternative embodiment, if the control interval of the degree of superheat of the intake air is the third control interval, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
In the embodiment of the present invention, the above steps S400 and S500 are executed by the control module 13.
In an alternative embodiment, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor or not; and if the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor, adjusting the control interval of the suction superheat degree to an initial control interval.
In the embodiment of the present invention, the above steps S600 and S700 are executed by the control module 13.
In an alternative embodiment, the control module is further configured to: judging whether the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor; and if the real-time temperature of the inner disc is less than the frequency limit temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor, the control interval for controlling the suction superheat degree is kept in the current control interval.
In the embodiment of the present invention, the above steps S800 and S900 are executed by the control module 13.
The variable frequency air conditioner overload control device 10 provided by the embodiment of the invention comprises: and judging whether overload control is performed according to the real-time temperature of the inner disc of the air conditioner by acquiring the real-time temperature of the inner disc. When the air conditioner is in overload control, the control interval of the suction superheat degree is controlled according to the obtained target operation frequency of the compressor, so that the opening degree of the electronic expansion valve is increased, the system pressure is reduced, the working frequency of the compressor is improved, and a better heating effect is achieved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An overload control method of an inverter air conditioner is used for the inverter air conditioner and is characterized by comprising the following steps:
when the running frequency of a compressor of the variable frequency air conditioner is smaller than a target running frequency, acquiring the real-time temperature of an inner disc of an indoor heat exchanger coil of the variable frequency air conditioner, and acquiring the target running frequency of the compressor of the variable frequency air conditioner;
judging whether the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature of the compressor and less than the frequency reduction temperature of the compressor;
if the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, controlling a suction superheat degree control interval of the compressor according to the target operation frequency so as to increase the opening degree of an electronic expansion valve of the compressor and improve the operation frequency of the compressor of the variable frequency air conditioner;
the step of controlling the suction superheat control section of the compressor according to the target operating frequency includes:
after the compressor operates for a first preset time, acquiring a first current operating frequency of the compressor;
judging whether the first current running frequency is smaller than the target running frequency;
and if the first current operating frequency is less than the target operating frequency, controlling a suction superheat control interval of the compressor, and adjusting the suction superheat control interval from an initial control interval to a first control interval, wherein the upper limit value of the first control interval is less than the upper limit value of the initial control interval.
2. The overload control method for the inverter air conditioner according to claim 1, wherein after the step of controlling the suction superheat degree control interval of the compressor from the initial control interval to the first control interval to increase the opening degree of the electronic expansion valve of the compressor, the method further comprises the following steps:
after the control interval of the suction superheat degree operates for a second preset time in the first control interval, acquiring a second current operating frequency of the compressor and acquiring a first exhaust temperature of the compressor;
judging whether the second current operation frequency is smaller than the target operation frequency or not, and whether the first exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the first exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not;
and if the second current operation frequency is less than the target operation frequency, and the first exhaust temperature is greater than or equal to a first preset temperature, or the difference between the first exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the first control interval to a second control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the second control interval is less than the upper limit value of the first control interval.
3. The inverter air conditioner overload control method of claim 2, wherein the upper limit value of the second control interval is less than or equal to the lower limit value of the first control interval.
4. The inverter air conditioner overload control method according to claim 2, wherein after the step of adjusting the suction superheat control interval from the first control interval to the second control interval to control the increase of the opening degree of the electronic expansion valve, the method further comprises:
after the control interval of the suction superheat degree operates for a third preset time in the second control interval, acquiring a third current operating frequency of the compressor and a second exhaust temperature of the compressor;
judging whether the third current operation frequency is smaller than the target operation frequency or not, and whether the second exhaust temperature is larger than or equal to a first preset temperature or whether the difference value between the second exhaust temperature and the real-time temperature of the inner disc is larger than or equal to a second preset temperature or not;
and if the third current operation frequency is less than the target operation frequency, and the second exhaust temperature is greater than or equal to a first preset temperature, or the difference between the second exhaust temperature and the real-time temperature of the inner disc is greater than or equal to a second preset temperature, adjusting the suction superheat degree control interval from the second control interval to a third control interval to control the opening degree of the electronic expansion valve to increase, wherein the upper limit value of the third control interval is less than the upper limit value of the second control interval.
5. The inverter air conditioner overload control method of claim 4, wherein an upper limit value of the third control interval is less than or equal to a lower limit value of the second control interval.
6. The overload control method for the inverter air conditioner according to claim 4 or 5, wherein if the control section of the suction superheat degree is the third control section, the method further comprises:
judging whether the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor;
and if the real-time temperature of the inner disc is less than the frequency reduction temperature of the compressor and is greater than or equal to the frequency limit temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
7. The inverter air conditioner overload control method according to any one of claims 1 to 5, wherein the method further comprises:
judging whether the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor or not;
and if the real-time temperature of the inner disc is less than the heating overload control release temperature of the compressor, adjusting the control interval of the suction superheat degree to an initial control interval.
8. The inverter air conditioner overload control method according to any one of claims 1 to 5, wherein the method further comprises:
judging whether the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor;
and if the real-time temperature of the inner disc is less than the frequency limiting temperature of the compressor and is greater than or equal to the heating overload control release temperature of the compressor, controlling the control interval of the suction superheat degree to keep the current control interval.
9. An inverter air conditioner overload control apparatus for an inverter air conditioner (100), the apparatus comprising:
an acquisition module (11): the system comprises a control module, a control module and a control module, wherein the control module is used for acquiring the real-time temperature of an inner disc of an indoor heat exchanger coil of the inverter air conditioner (100) and acquiring the target operating frequency of a compressor of the inverter air conditioner when the operating frequency of the compressor of the inverter air conditioner is smaller than the target operating frequency;
a judging module (12): the temperature control device is used for judging whether the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature of the compressor and is less than the frequency reduction temperature of the compressor or not;
control module (13): and the controller is used for acquiring a first current operation frequency of the compressor after the compressor operates for a first preset time if the real-time temperature of the inner disc is greater than or equal to the frequency limiting temperature and less than the frequency reducing temperature, judging whether the first current operation frequency is less than the target operation frequency, controlling an air suction superheat degree control interval of the compressor under the condition that the first current operation frequency is less than the target operation frequency, and adjusting the control interval to a first control interval from an initial control interval so as to increase the opening degree of an electronic expansion valve of the compressor and improve the operation frequency of the compressor of the variable frequency air conditioner, wherein the upper limit value of the first control interval is less than the upper limit value of the initial control interval.
10. An inverter air conditioner, characterized by comprising a controller (20), wherein the controller (20) stores an inverter air conditioner overload control program, and the inverter air conditioner overload control program realizes the method according to any one of claims 1-8 when executed.
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| 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, device, air conditioner, and computer-readable storage medium |
| CN113959049A (en) * | 2021-10-08 | 2022-01-21 | 珠海格力电器股份有限公司 | Noise improvement control method for high-load shedding and variable-frequency air conditioning system |
| CN114151948B (en) * | 2021-11-15 | 2023-04-07 | 广东西屋康达空调有限公司 | Temperature constant control method, equipment and system for variable frequency heat pump air conditioning unit |
| CN114543328B (en) * | 2022-01-17 | 2023-11-21 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner, storage medium |
| CN115264654B (en) * | 2022-07-28 | 2024-08-09 | 海信家电集团股份有限公司 | Air conditioner and overload control method thereof |
| CN115451542B (en) * | 2022-08-08 | 2025-01-28 | 宁波奥克斯电气有限公司 | Inverter air conditioning system control method, device and inverter air conditioning |
| CN115751619A (en) * | 2022-11-29 | 2023-03-07 | 青岛海尔空调器有限总公司 | Air conditioner compressor control method, device, equipment and storage medium |
| CN117433101B (en) * | 2023-12-15 | 2024-04-16 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner system |
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