Air conditioner, control method, device and readable storage medium thereof

Abstract

The present invention provides an air conditioner, a control method, a device, and a readable storage medium thereof. The control method includes: obtaining an increased power value and a real-time voltage value of a preset component of an indoor unit, and obtaining an outdoor unit current value; calculating and determining an increased current value based on the increased power value and the real-time voltage value; and controlling the compressor frequency based on the outdoor unit current value and the increased current value. The present invention addresses the problem that the technical solutions in the related art cannot effectively protect the air conditioner current without increasing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner and a control method, device and readable storage medium thereof. Background Art

[0002] Air conditioners are ubiquitous in countless households, and more and more people are enjoying the comfort they bring. To ensure electrical safety, current air conditioners are equipped with current detection devices, which reduce the frequency or even shut down the unit directly when the current is too high. However, when a high-power device such as electric auxiliary heating is added to the indoor unit of an air conditioner, the inverter does not monitor the total current or the indoor unit current during operation, but only the external unit current. Therefore, the additional power or current of the indoor unit cannot be effectively detected. Therefore, when the mains voltage is low, the indoor unit will draw high current due to the high power demand. To prevent high current during low voltage, existing technologies often require a larger power cord, which increases costs.

[0003] It can be seen that the problem existing in the related art is that the technical solutions in the related art cannot achieve effective protection of the air conditioner current without increasing the cost. Summary of the Invention

[0004] The problem solved by the present invention is that the technical solutions in the related art cannot achieve effective protection of the air conditioner current without increasing the cost.

[0005] To solve the above problems, a first object of the present invention is to provide a method for controlling an air conditioner.

[0006] A second object of the present invention is to provide a control device for an air conditioner.

[0007] A third object of the present invention is to provide an air conditioner.

[0008] A fourth object of the present invention is to provide a readable storage medium.

[0009] To achieve the first objective of the present invention, an embodiment of the present invention provides a method for controlling an air conditioner, the method comprising:

[0010] S100: Obtain the increased power value and real-time voltage value of the preset components of the indoor unit, and obtain the current value of the outdoor unit;

[0011] S200: Calculating and determining an increased current value according to the increased power value and the real-time voltage value;

[0012] S300: Control the compressor frequency according to the outdoor unit current value and the increased current value.

[0013] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the solution of this embodiment takes into account the power value brought by the increase of the pre-set device, and by calculating the increased current value and compensating the increased current value into the total current, it can achieve effective current protection and make the current protection setting more accurate; because the current protection setting is more effective, the power cord selection of the air conditioner can be relatively reduced, further saving costs.

[0014] In one embodiment of the present invention, S200 includes:

[0015] Increased current value = increased power value / real-time voltage value.

[0016] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the increased power value is the rated working power value of the pre-set device of the indoor unit, and the increased power value can be accurately calculated by detecting the real-time voltage value, further improving the accuracy of the control method of the present invention.

[0017] In one embodiment of the present invention, before S100, the method further includes:

[0018] Determine whether the preset device of the indoor unit is turned on;

[0019] When the judgment is yes, execute steps S100 to S300;

[0020] When the judgment is no, the current value of the outdoor unit is obtained, and the compressor frequency is controlled according to the current value of the outdoor unit.

[0021] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: when the preset device of the indoor unit is turned off, the compressor frequency can be controlled only according to the current value of the outdoor unit; when the preset device of the indoor unit is turned on, the increased current value will be taken into consideration; the solution of this embodiment effectively improves the accuracy and reliability of the control method of the present invention.

[0022] In one embodiment of the present invention, when the judgment is no, obtaining the current value of the external machine, and controlling the compressor frequency according to the current value of the external machine include:

[0023] When the external machine current value is less than the first threshold, the compressor has no frequency limit;

[0024] When the first threshold value is less than or equal to the external machine current value and less than the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0025] When the second threshold value is less than or equal to the external machine current value and less than the third threshold value, the compressor frequency is controlled to decrease;

[0026] When the third threshold value is less than or equal to the external machine current value, the compressor is controlled to stop.

[0027] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the solution of this embodiment can ensure the current safety of the air conditioner when the preset device of the indoor unit is turned off.

[0028] In one embodiment of the present invention, S300 includes:

[0029] When the external machine current value + the increased current value is less than the first threshold, the compressor has no frequency limit;

[0030] When the first threshold value ≤ the external machine current value + the increased current value < the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0031] When the second threshold value ≤ the external machine current value + the increased current value < the third threshold value, the compressor frequency is controlled to decrease;

[0032] When the third threshold value+increased current value ≤ the external unit current value, the compressor is controlled to stop.

[0033] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: by calculating the sum of the external unit current value and the increased current value to control the compressor frequency, the additional current is compensated to the total current, and the compressor frequency is adjusted according to the total current size, effectively improving the accuracy of the current protection setting.

[0034] In one embodiment of the present invention, S300 includes:

[0035] When the outdoor unit current value + the increased current value is less than the maximum current value of the power line, the compressor frequency is controlled according to the corrected current value, the outdoor unit current value and the increased current value.

[0036] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the solution of this embodiment takes into account the corrected current value, the external unit current value and the increased current value, and then controls the compressor frequency, which effectively improves the accuracy of the control method of the present invention and the user experience.

[0037] In one embodiment of the present invention, controlling the compressor frequency according to the corrected current value, the external unit current value, and the increased current value includes:

[0038] When the external unit current value + increased current value - corrected current value < the first threshold, the compressor has no frequency limit;

[0039] When the first threshold value is less than or equal to the external machine current value + the increased current value - the corrected current value and less than the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0040] When the second threshold value ≤ the external machine current value + the increased current value - the corrected current value < the third threshold value, the compressor frequency is controlled to decrease;

[0041] When the third threshold value+increased current value-corrected current value ≤ the external unit current value, the compressor is controlled to stop.

[0042] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the solution of this embodiment comprehensively considers the influence of the corrected current value, the outdoor unit current value and the increased current value on the current protection of the air conditioner, thereby effectively improving the accuracy of the current protection.

[0043] To achieve the second objective of the present invention, an embodiment of the present invention provides a control device for an air conditioner, the control device comprising:

[0044] The detection module is used to obtain the increased power value and real-time voltage value of the preset components of the indoor unit and the current value of the outdoor unit;

[0045] A calculation module is used to calculate and determine an increased current value based on the increased power value and the real-time voltage value;

[0046] The control module is used to control the compressor frequency according to the external machine current value and the increased current value.

[0047] The control device of the air conditioner in the embodiment of the present invention implements the steps of the control method of the air conditioner in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner in any embodiment of the present invention, which will not be repeated here.

[0048] To achieve the third purpose of the present invention, an embodiment of the present invention provides an air conditioner, which includes: a processor, a memory, and a program or instruction stored in the memory and runnable on the processor. When the program or instruction is executed by the processor, the steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0049] The air conditioner of the embodiment of the present invention implements the steps of the control method of the air conditioner of any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner of any embodiment of the present invention, which will not be repeated here.

[0050] To achieve the fourth purpose of the present invention, an embodiment of the present invention provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0051] The readable storage medium of the embodiment of the present invention implements the steps of the air conditioner control method of any embodiment of the present invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of the present invention, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 11 is a flowchart of the steps of a method for controlling an air conditioner according to some embodiments of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0054] See also Figure 1 This embodiment provides a method for controlling an air conditioner, the method comprising:

[0055] S100: Obtain the increased power value and real-time voltage value of the preset components of the indoor unit, and obtain the current value of the outdoor unit;

[0056] S200: Calculating and determining an increased current value according to the increased power value and the real-time voltage value;

[0057] S300: Control the compressor frequency according to the outdoor unit current value and the increased current value.

[0058] In this embodiment, the air conditioner includes an indoor unit controller and an outdoor unit controller. The outdoor unit controller is used to detect the outdoor unit current value, and the indoor unit controller is used to detect the real-time voltage value. Optionally, both the indoor unit controller and the outdoor unit controller detect the current and voltage values ​​via internal sampling circuits. The indoor unit preset components refer to components added to the indoor unit of the air conditioner, such as high-power components such as indoor electric auxiliary heating. When the components are installed in the indoor unit, the indoor unit controller obtains their rated operating power. The added power value in this embodiment is the rated operating power of the additional components in the indoor unit of the air conditioner.

[0059] Furthermore, in S300, the compressor frequency is controlled based on the outdoor unit current value and the increased current value. When the mains voltage is low, the current increases. At this time, the additional components in the indoor unit further increase the current inside the air conditioner, potentially posing a safety hazard. In this embodiment, the increased current value refers to the increased current value caused by the additional components in the indoor unit. This increased current value is factored into the air conditioner's current protection mechanism, effectively protecting the air conditioner based on its actual conditions.

[0060] It can be understood that the solution of this embodiment takes into account the power value brought about by the increase of pre-set devices. By calculating the increased current value and compensating the increased current value into the total current, effective current protection can be achieved, and the current protection setting can be made more accurate. Because the current protection setting is more effective, the power cord selection of the air conditioner can be relatively reduced, further saving costs.

[0061] Furthermore, in a specific embodiment, S200 includes:

[0062] Increased current value = increased power value / real-time voltage value.

[0063] It can be understood that the increased power value is the rated working power value of the pre-set device of the indoor unit. By detecting the real-time voltage value, the increased power value can be accurately calculated, further improving the accuracy of the control method of the present invention.

[0064] Furthermore, in a specific embodiment, before S100, the method further includes:

[0065] Determine whether the preset device of the indoor unit is turned on;

[0066] When the judgment is yes, execute steps S100 to S300;

[0067] When the judgment is no, the current value of the outdoor unit is obtained, and the compressor frequency is controlled according to the current value of the outdoor unit.

[0068] In this embodiment, before executing the control method of this embodiment, it is necessary to determine whether the preset device of the indoor unit is turned on; when it is determined to be yes, the steps of the control method of this embodiment can be executed; when it is determined to be no, the current value of the outdoor unit is obtained, and the compressor frequency is controlled according to the current value of the outdoor unit.

[0069] It can be understood that when the preset device of the indoor unit is turned off, the compressor frequency can be controlled only based on the current value of the outdoor unit; when the preset device of the indoor unit is turned on, the increased current value will be taken into consideration; the solution of this embodiment effectively improves the accuracy and reliability of the control method of the present invention.

[0070] Furthermore, in a specific embodiment, when the judgment is no, obtaining the current value of the external machine, and controlling the compressor frequency according to the current value of the external machine include:

[0071] When the external machine current value is less than the first threshold, the compressor has no frequency limit;

[0072] When the first threshold value is less than or equal to the external machine current value and less than the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0073] When the second threshold value is less than or equal to the external machine current value and less than the third threshold value, the compressor frequency is controlled to decrease;

[0074] When the third threshold value is less than or equal to the external machine current value, the compressor is controlled to stop.

[0075] In this embodiment, when the outdoor unit current value is less than the first threshold value, the compressor has no frequency limit, that is, the compressor frequency limit is released; when the first threshold value ≤ the outdoor unit current value < the second threshold value, the compressor frequency is limited so that it cannot exceed the limited frequency; when the second threshold value ≤ the outdoor unit current value < the third threshold value, the outdoor unit current value is relatively high, and the compressor frequency should be controlled to decrease to reduce the current value of the air conditioner to avoid safety hazards; when the third threshold value ≤ the outdoor unit current value, the outdoor unit current value is too high, and the compressor is controlled to stop.

[0076] It should be noted that the first threshold, the second threshold, and the third threshold mentioned in this embodiment are all preset thresholds, and the first threshold < the second threshold < the third threshold; the limited frequency is a preset frequency value.

[0077] It can be understood that the solution of this embodiment can ensure the current safety of the air conditioner when the preset device of the indoor unit is turned off.

[0078] Furthermore, in a specific embodiment, S300 includes:

[0079] When the external machine current value + the increased current value is less than the first threshold, the compressor has no frequency limit;

[0080] When the first threshold value ≤ the external machine current value + the increased current value < the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0081] When the second threshold value ≤ the external machine current value + the increased current value < the third threshold value, the compressor frequency is controlled to decrease;

[0082] When the third threshold value+increased current value ≤ the external unit current value, the compressor is controlled to stop.

[0083] It can be understood that by calculating the sum of the external machine current value and the increased current value to control the compressor frequency, the additional current is compensated to the total current, and the compressor frequency is adjusted according to the total current size, which effectively improves the accuracy of the current protection setting.

[0084] Furthermore, in a specific embodiment, S300 includes:

[0085] When the outdoor unit current value + the increased current value is less than the maximum current value of the power line, the compressor frequency is controlled according to the corrected current value, the outdoor unit current value and the increased current value.

[0086] It should be noted that the corrected current value is a preset current value; the maximum current value of the power line is the nominal maximum current value of the air conditioner power line.

[0087] In this embodiment, when the air conditioner is just turned on, the compressor runs at rated power and the starting frequency of the compressor is low. At this time, if the compressor frequency is directly controlled according to the external unit current value and the increased current value, it is easy for the total current to be too large, resulting in the compressor frequency being reduced or shut down before the compressor frequency is significantly increased, thereby causing the temperature regulation effect of the air conditioner to deteriorate and the user experience to deteriorate.

[0088] It can be understood that the solution of this embodiment takes into account the corrected current value, the external machine current value and the increased current value before controlling the compressor frequency, which effectively improves the accuracy of the control method of the present invention and the user experience.

[0089] Furthermore, in a specific embodiment, controlling the compressor frequency according to the corrected current value, the external unit current value, and the increased current value includes:

[0090] When the external unit current value + increased current value - corrected current value < the first threshold, the compressor has no frequency limit;

[0091] When the first threshold value is less than or equal to the external machine current value + the increased current value - the corrected current value and less than the second threshold value, the compressor frequency is controlled to be less than the limited frequency;

[0092] When the second threshold value ≤ the external machine current value + the increased current value - the corrected current value < the third threshold value, the compressor frequency is controlled to decrease;

[0093] When the third threshold value+increased current value-corrected current value ≤ the external unit current value, the compressor is controlled to stop.

[0094] In this embodiment, it is specifically described how to control the compressor frequency according to the correction current value, the outdoor unit current value and the increased current value.

[0095] It can be understood that the solution of this embodiment comprehensively considers the effects of the corrected current value, the outdoor unit current value and the increased current value on the current protection of the air conditioner, thereby effectively improving the accuracy of the current protection.

[0096] Furthermore, this embodiment provides a control device for an air conditioner, the control device comprising:

[0097] The detection module is used to obtain the increased power value and real-time voltage value of the preset components of the indoor unit and the current value of the outdoor unit;

[0098] A calculation module is used to calculate and determine an increased current value based on the increased power value and the real-time voltage value;

[0099] The control module is used to control the compressor frequency according to the external machine current value and the increased current value.

[0100] The control device of the air conditioner in the embodiment of the present invention implements the steps of the control method of the air conditioner in any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner in any embodiment of the present invention, which will not be repeated here.

[0101] Furthermore, this embodiment provides an air conditioner, which includes: a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the air conditioner control method as in any embodiment of the present invention are implemented.

[0102] The air conditioner of the embodiment of the present invention implements the steps of the control method of the air conditioner of any embodiment of the present invention, and thus has all the beneficial effects of the control method of the air conditioner of any embodiment of the present invention, which will not be repeated here.

[0103] Furthermore, this embodiment provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the air conditioner control method according to any embodiment of the present invention are implemented.

[0104] The readable storage medium of the embodiment of the present invention implements the steps of the air conditioner control method of any embodiment of the present invention, and thus has all the beneficial effects of the air conditioner control method of any embodiment of the present invention, which will not be repeated here.

[0105] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A method for controlling an air conditioner, characterized in that: The control method includes: S100: Obtain the increased power value and real-time voltage value of the preset components of the indoor unit, and obtain the current value of the outdoor unit; S200: Calculating and determining an increased current value according to the increased power value and the real-time voltage value; S300: Controlling the compressor frequency according to the external unit current value and the increased current value; Before S100, the method further includes: Determining whether the preset device of the indoor unit is turned on; When the judgment is yes, execute steps S100 to S300; When the judgment is no, the external machine current value is obtained, and the compressor frequency is controlled according to the external machine current value; when the external machine current value is less than the first threshold value, the compressor frequency is not limited; When the first threshold value is less than or equal to the external machine current value and less than a second threshold value, controlling the compressor frequency to be less than a limited frequency; When the second threshold value is less than or equal to the external machine current value and less than a third threshold value, controlling the compressor frequency to decrease; When the third threshold value is less than or equal to the external machine current value, controlling the compressor to stop; The S300 includes: When the external machine current value+the increased current value<the first threshold value, the compressor has no frequency limit; When the first threshold value is less than or equal to the external machine current value + the increased current value and less than the second threshold value, controlling the compressor frequency to be less than a limited frequency; When the second threshold value is less than or equal to the external machine current value + the increased current value and less than the third threshold value, controlling the compressor frequency to decrease; When the third threshold value+the increased current value≤the external machine current value, the compressor is controlled to stop.

2. The control method according to claim 1, characterized in that: The S200 includes: The increased current value=the increased power value / the real-time voltage value.

3. The control method according to claim 1, wherein: The S300 includes: When the external unit current value+the increased current value<the maximum current value of the power line, the compressor frequency is controlled according to the corrected current value, the external unit current value and the increased current value.

4. The control method according to claim 3, characterized in that: The controlling of the compressor frequency according to the corrected current value, the external unit current value, and the increased current value includes: When the external machine current value+the increased current value-the corrected current value<the first threshold value, the compressor has no frequency limit; When the first threshold value is less than or equal to the external machine current value + the increased current value - the corrected current value and less than the second threshold value, controlling the compressor frequency to be less than a limited frequency; When the second threshold value is less than or equal to the external machine current value + the increased current value - the corrected current value and less than the third threshold value, controlling the compressor frequency to decrease; When the third threshold value+the increased current value-the corrected current value≦the external unit current value, the compressor is controlled to stop.

5. A control device for an air conditioner, characterized in that: The control device comprises: A detection module, the detection module is used to obtain the increased power value and real-time voltage value of the preset components of the indoor unit and the current value of the outdoor unit; a calculation module, configured to calculate and determine an increased current value based on the increased power value and the real-time voltage value; A control module is used to control the compressor frequency according to the external machine current value and the increased current value.

6. An air conditioner, characterized in that: The air conditioner includes: a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the control method according to any one of claims 1 to 4.

7. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the control method according to any one of claims 1 to 4 are implemented.

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