Thermal load protection control method and control device of air conditioner and air conditioner

Abstract

The invention provides a thermal load protection control method and device of an air conditioner and the air conditioner. The control method comprises the steps that the inner coil pipe temperature of an indoor unit coil pipe is obtained every set detection duration; when the temperature of the inner coil pipe exceeds the set temperature of the inner coil pipe, the air conditioner is controlled to execute thermal load protection control logic, and the thermal load protection control logic comprises the step that the power of the air conditioner is adjusted according to the temperature of the inner coil pipe; in the process that the air conditioner executes the thermal load protection control logic, the power change state of the air conditioner is detected in real time; and correcting the set detection duration according to the power change state, and circularly executing the steps. According to the thermal load protection control method and device of the air conditioner and the air conditioner, detection of the temperature of the inner coil pipe is more accurate, too frequent frequency adjusting operation of the compressor can be avoided, power fluctuation of a system is avoided, stable operation of the air conditioner is achieved, and then good use experience is improved for a user.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to a heat load protection control method, a control device and an air conditioner for an air conditioner. Background Art

[0002] In the related art, when the ambient temperature is relatively high and the air conditioner is in the heating mode, when the temperature of the inner coil exceeds a certain temperature, the heat load protection of the system will be triggered. At this time, the compressor frequency will be reduced to lower the temperature of the inner coil. At the same time, the temperature of the inner coil is monitored in real time. When the temperature is high, the compressor frequency is reduced, and when the temperature is low, the compressor frequency is increased to keep the temperature of the inner coil stable within a reasonable range. However, the change speed of the coil temperature is slow, which will cause excessive adjustment of the compressor frequency, resulting in power fluctuations in the system and affecting the user experience. Summary of the Invention

[0003] The present invention provides a heat load protection control method, a control device and an air conditioner for an air conditioner, so as to solve the defects in the prior art and achieve the following technical effects: the detection of the temperature of the inner coil is more accurate, the operation of adjusting the compressor frequency can be avoided from being too frequent, thereby avoiding power fluctuations in the system, realizing the stable operation of the air conditioner, and further providing a good user experience for users.

[0004] The heat load protection control method for an air conditioner according to the first aspect embodiment of the present invention includes:

[0005] Obtain the temperature of the inner coil of the indoor unit coil every set detection duration;

[0006] If the temperature of the inner coil exceeds the set inner coil temperature, control the air conditioner to execute the heat load protection control logic, wherein the heat load protection control logic includes adjusting the power of the air conditioner according to the temperature of the inner coil;

[0007] During the process of the air conditioner executing the heat load protection control logic, the power change state of the air conditioner is detected in real time;

[0008] According to the power change state, correct the set detection duration, and loop to execute the above steps.

[0009] According to an embodiment of the present invention, the step of correcting the set detection duration according to the power change state specifically includes:

[0010] Judge whether the power of the air conditioner has an over-limit fluctuation according to the power change state, and determine the correction method according to the judgment result and correct the set detection duration.

[0011] According to an embodiment of the present invention, the step of determining a correction method based on the judgment result and correcting the set detection duration specifically includes:

[0012] When the power of the air conditioner fluctuates beyond the limit, extend the set detection duration on the basis of the original value to obtain the corrected set detection duration;

[0013] When the power of the air conditioner does not fluctuate beyond the limit, control the set detection duration to remain unchanged at the original value.

[0014] According to an embodiment of the present invention, the step of judging whether the power of the air conditioner fluctuates beyond the limit according to the power change state specifically includes:

[0015] If it is determined that the difference between the maximum detection value and the minimum detection value of the power of the air conditioner within the set cycle duration is greater than the set over-limit difference, the judgment result is that the power of the air conditioner fluctuates beyond the limit;

[0016] If it is determined that the difference between the maximum detection value and the minimum detection value of the power of the air conditioner within the set cycle duration is less than or equal to the set over-limit difference, the judgment result is that the power of the air conditioner does not fluctuate beyond the limit.

[0017] According to an embodiment of the present invention, the step of judging whether the power of the air conditioner fluctuates beyond the limit according to the power change state specifically includes:

[0018] Plot all detected air conditioner power detection values into an air conditioner power change curve;

[0019] Calculate the average power change rate of the air conditioner within the set cycle duration according to the air conditioner power change curve, and judge whether the power of the air conditioner fluctuates beyond the limit according to the comparison result between the average power change rate and the over-limit change rate;

[0020] Wherein, when the average power change rate is greater than or equal to the over-limit change rate, the judgment result is that the power of the air conditioner fluctuates beyond the limit; when the average power change rate is less than the over-limit change rate, the judgment result is that the power of the air conditioner does not fluctuate beyond the limit.

[0021] According to an embodiment of the present invention, in the step of controlling the air conditioner to execute the heat load protection control logic when the inner coil temperature exceeds the set inner coil temperature, the heat load protection control logic includes:

[0022] Determine a frequency adjustment mode for the frequency of the compressor according to the range of the inner coil temperature, and adjust the frequency of the compressor according to the frequency adjustment mode.

[0023] According to an embodiment of the present invention, the step of determining a frequency adjustment mode for the frequency of the compressor according to the range of the inner coil temperature and adjusting the frequency of the compressor according to the frequency adjustment mode specifically includes:

[0024] Determine that the inner coil temperature is in a first temperature range, and adjust the frequency of the compressor according to a slow frequency reduction mode;

[0025] Determine that the inner coil temperature is in a second temperature range, and adjust the frequency of the compressor according to a fast frequency reduction mode;

[0026] Determine that the inner coil temperature is in a third temperature range and lasts for at least a first preset duration, and then control the compressor to stop;

[0027] Wherein, the first temperature range is less than the second temperature range, the second temperature range is less than the third temperature range, and the frequency reduction speed in the slow frequency reduction mode is less than the frequency reduction speed in the fast frequency reduction mode.

[0028] According to an embodiment of the present invention, after the step of controlling the compressor of the air conditioner to stop after determining that the inner coil temperature is in the third temperature range and lasts for at least a first preset duration, it further includes:

[0029] According to the fact that the shutdown duration of the compressor exceeds a second preset duration and the current inner coil temperature is lower than a preset start temperature, control the compressor to restart;

[0030] After determining that the compressor restarts, adjust the frequency of the compressor according to the inner coil temperature.

[0031] According to an embodiment of the present invention, the step of adjusting the frequency of the compressor according to the inner coil temperature after determining that the compressor restarts specifically includes:

[0032] Determine that the inner coil temperature is in the third temperature range, and adjust the frequency of the compressor according to a fast frequency increase mode;

[0033] Determine that the inner coil temperature is in a fourth temperature range, and adjust the frequency of the compressor according to a slow frequency increase mode;

[0034] Wherein, the third temperature range is less than the fourth temperature range, and the frequency increase speed in the slow frequency increase mode is less than the frequency increase speed in the fast frequency increase mode.

[0035] According to an embodiment of the present invention, after the step of obtaining the inner coil temperature of the indoor unit coil at every set detection duration, it further includes:

[0036] If the temperature of the inner coil does not exceed the set inner coil temperature, control the air conditioner to operate at the current compressor frequency.

[0037] The heat load protection control device of an air conditioner according to an embodiment of the second aspect of the present invention includes:

[0038] A first acquisition module, configured to acquire the temperature of the inner coil of the indoor unit coil every set detection duration;

[0039] A first control module, configured to control the air conditioner to execute the heat load protection control logic according to the inner coil temperature exceeding the set inner coil temperature, wherein the heat load protection control logic includes adjusting the power of the air conditioner according to the inner coil temperature;

[0040] A second acquisition module, configured to detect the power change state of the air conditioner in real time during the process of the air conditioner executing the heat load protection control logic;

[0041] A second control module, configured to correct the set detection duration according to the power change state and loop to execute the above steps.

[0042] An air conditioner according to an embodiment of the third aspect of the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the heat load protection control method of the air conditioner according to the embodiment of the first aspect of the present invention.

[0043] The present invention provides a heat load protection control method for an air conditioner. The method obtains the power change state of the air conditioner during the process of executing the heat load protection control logic, and adjusts the set detection duration according to the power change state of the air conditioner. For example, when it is found that the power fluctuates back and forth, the current control logic is changed, and the temperature detection time is extended (that is, the set detection duration is extended). In this way, the detection of the inner coil temperature is more accurate, the compressor frequency adjustment operation can be avoided from being too frequent, thereby avoiding the power fluctuation of the system, realizing the stable operation of the air conditioner, and further providing a good user experience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 It is a schematic flowchart of the heat load protection control method of the air conditioner provided by the present invention;

[0046] Figure 2 It is a schematic structural diagram of the heat load protection control device of the air conditioner provided by the present invention;

[0047] Figure 3 It is a schematic structural diagram of the electronic device provided by the present invention. Specific embodiments

[0048] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0050] The control method, control device and air conditioner of the air conditioner proposed by the present invention will be described below with reference to the accompanying drawings. Among them, before describing the embodiments of the present invention in detail, the entire application scenario will be described first. The control method, control device, electronic device and computer-readable storage medium of the air conditioner in the embodiments of the present invention can be applied not only to the local air conditioner, but also to the cloud platform in the Internet field, or the cloud platform in other types of Internet fields, or can also be applied to third-party devices. Among them, the third-party devices may include various different types such as mobile phones, tablet computers, notebooks, in-vehicle computers and other intelligent terminals.

[0051] The control method applicable to the air conditioner will be described below as an example. It should be understood that the control method in the embodiments of the present invention can also be applicable to the cloud platform and third-party devices.

[0052] As Figure 1 shown, according to the heat load protection control method of the air conditioner in the first aspect embodiment of the present invention, it includes:

[0053] Step S1, every set detection duration, obtain the inner coil temperature of the indoor unit coil;

[0054] Step S2, if the temperature of the inner coil exceeds the set inner coil temperature, then control the air conditioner to execute the heat load protection control logic, where the heat load protection control logic includes adjusting the power of the air conditioner according to the temperature of the inner coil;

[0055] Step S3, during the process of the air conditioner executing the heat load protection control logic, continuously detect the power change state of the air conditioner in real time;

[0056] Step S4, modify the set detection duration according to the power change state, and loop to execute the above steps.

[0057] For the heat load protection control method of the air conditioner according to the embodiment of the present invention, its specific working process and working principle are as follows: First, the controller obtains the temperature of the inner coil of the indoor unit coil every set detection duration. At this time, the coil temperature sensor arranged on the inner coil detects the temperature of the inner coil of the indoor unit coil. After the coil temperature sensor detects the temperature of the inner coil in the current period, it transmits the temperature to the controller in the form of a signal, so as to complete one acquisition of the temperature of the inner coil by the controller.

[0058] After the controller obtains the temperature of the inner coil, the controller immediately analyzes and judges the temperature data. When it is judged that the temperature of the inner coil in the current period exceeds the preset set inner coil temperature, it means that the current temperature of the inner coil is relatively high. At this time, in order to protect the normal operation of the compressor, the controller needs to control the air conditioner to automatically execute the heat load protection control logic. It should be noted that the heat load protection control logic refers to the control logic for adjusting the power of the compressor based on the magnitude of the temperature of the inner coil. Specifically, the heat load protection control logic includes adjusting the frequency of the air conditioner compressor according to the temperature of the inner coil, so as to complete the protection of the heat load of the compressor.

[0059] When the controller determines that the air conditioner is currently in the process of executing the heat load protection control logic, the controller will further monitor the current power of the air conditioner in real time, so as to obtain the power change state of the air conditioner during the execution of the heat load protection control logic. It should be noted that the purpose of monitoring the power change state in the above steps is to obtain the change in the power of the air conditioner brought about by the operation of adjusting the compressor frequency. After obtaining the above power change situation, the controller will further modify the set detection duration in step S1 according to the power change situation, so as to set a reasonable detection duration in the next heat load protection cycle, and avoid faults such as abnormal operation of the air conditioner caused by frequent fluctuations in the power of the air conditioner.

[0060] It can be understood that after the air conditioner starts to execute the heat load protection control logic in step S2, the frequency of the compressor will be adjusted according to the change of the inner coil temperature. When the set detection duration is short, the execution frequency of the heat load protection control logic is also high, resulting in too many frequency adjustment times of the compressor. Although the current inner coil temperature is monitored in real time, it takes a certain time response from the change of the compressor frequency to the stabilization of the inner coil temperature. The current control logic will cause excessive adjustment of the compressor frequency, resulting in fluctuations in the air conditioner power. To solve this problem, the method of the present invention increases the response time of temperature detection. When the power fluctuates, the coil temperature detection time is increased, for example, the inner coil temperature is detected every 30S, and then the compressor frequency is adjusted. If the air conditioner power no longer fluctuates, it operates at this frequency. If the power continues to fluctuate, the detection time is extended, for example, extended to 60S, and the above actions are continued.

[0061] In the related art, when the ambient temperature is high, in the heating mode of the air conditioner, when the inner coil temperature exceeds a certain temperature, the heat load protection of the system will be triggered. At this time, the compressor frequency will be reduced to lower the temperature of the inner coil. At the same time, the inner coil temperature is monitored in real time. When the temperature is at a high level, the compressor frequency is reduced, and when the temperature is at a low level, the compressor frequency is increased to stabilize the inner coil temperature within a reasonable range. However, the change speed of the coil temperature is slow, which will cause excessive adjustment of the compressor frequency, resulting in power fluctuations of the system and affecting the user experience.

[0062] Therefore, to solve the technical problems existing in the above related art, the present invention provides a heat load protection control method for an air conditioner. The method obtains the change state of the air conditioner power during the execution of the heat load protection control logic, and adjusts the set detection duration according to whether the air conditioner power change state is normal. For example, when it is found that the power fluctuates back and forth, the current control logic is changed to extend the temperature detection time (that is, extend the set detection duration). In this way, the detection of the inner coil temperature is more accurate, the compressor frequency adjustment operation can be avoided from being too frequent, thereby avoiding power fluctuations of the system, realizing stable operation of the air conditioner, and further providing a good user experience for users.

[0063] According to some embodiments of the present invention, the step of correcting the set detection duration according to the power change state specifically includes:

[0064] Judge whether the power of the air conditioner has an excessive fluctuation according to the power change state, and determine the correction method according to the judgment result and correct the set detection duration.

[0065] It can be understood that the power change state can reflect the power change of the air conditioner within a certain period of time. Based on the power change state and a specific calculation method, it can be determined whether the air conditioner power has an over-limit fluctuation during the current detection period. It should be explained that the over-limit fluctuation refers to the sudden change fluctuation of the air conditioner power in a short period of time.

[0066] When the power of the air conditioner has an over-limit fluctuation, it proves that the air conditioner executes the thermal load protection control logic at a high frequency, and the air conditioner has a fault of unstable power. At this time, the controller will correct the set detection period, for example, extend the set detection period, so as to reduce the frequency of the air conditioner executing the thermal load protection control logic, that is, reduce the frequency of the air conditioner compressor frequency adjustment operation, and then ensure the stability of the air conditioner power and avoid abnormal power fluctuation of the air conditioner from affecting its normal operation.

[0067] According to some embodiments of the present invention, the step of determining the correction method according to the judgment result and correcting the set detection period specifically includes:

[0068] In the case where the power of the air conditioner has an over-limit fluctuation, extend the set detection period on the basis of the original value to obtain the corrected set detection period;

[0069] In the case where the power of the air conditioner does not have an over-limit fluctuation, control the set detection period to remain unchanged at the original value.

[0070] In this embodiment, when the power of the air conditioner has an over-limit fluctuation, it means that the air conditioner compressor frequency adjustment operation is executed too frequently. At this time, appropriately extend the set detection period and use the extended set detection period as the corrected set detection period to execute the next thermal load protection cycle. At this time, due to the extension of the set detection period, the number of executions of the thermal load protection control logic will also be smaller, and thus the over-limit fluctuation of the power can be alleviated.

[0071] When the power of the air conditioner does not have an over-limit fluctuation, it means that the air conditioner is in a normal operation state. At this time, the set duration can be maintained at the original value.

[0072] According to some embodiments of the present invention, the step of judging whether the power of the air conditioner has an over-limit fluctuation according to the power change state specifically includes:

[0073] Determine that the difference between the maximum detection value and the minimum detection value of the air conditioner power within the set cycle duration is greater than the set over-limit difference value, then the judgment result is that the air conditioner power has an over-limit fluctuation;

[0074] Determine that the difference between the maximum detection value and the minimum detection value of the air conditioner power within the set cycle duration is less than or equal to the set over-limit difference value, then the judgment result is that the air conditioner power does not have an over-limit fluctuation.

[0075] In this way, by judging and comparing the set over-limit difference with the difference between the maximum detected value and the minimum detected value of the air conditioner's power within the set cycle duration, it is possible to accurately determine whether there is an over-limit fluctuation in the air conditioner's power. Specifically, when the difference obtained after detection and calculation is greater than the preset set over-limit difference, it indicates that there is an over-limit fluctuation in the air conditioner's power; when the difference obtained after detection and calculation is less than the preset set over-limit difference, it indicates that there is no over-limit fluctuation in the air conditioner's power.

[0076] The above judgment method is simple and easy to calculate, and the accuracy is also relatively high.

[0077] According to some other embodiments of the present invention, the steps of judging whether there is an over-limit fluctuation in the air conditioner's power according to the power change state specifically include:

[0078] Plot all the detected air conditioner power detection values into an air conditioner power change curve;

[0079] Calculate the average power change rate of the air conditioner within the set cycle duration according to the air conditioner power change curve, and judge whether there is an over-limit fluctuation in the air conditioner's power according to the comparison result between the average power change rate and the over-limit change rate.

[0080] Among them, when the average power change rate is greater than or equal to the over-limit change rate, the judgment result is that there is an over-limit fluctuation in the air conditioner's power; when the average power change rate is less than the over-limit change rate, the judgment result is that there is no over-limit fluctuation in the air conditioner's power.

[0081] It can be understood that the judgment method described in this embodiment is a different judgment method from the previous embodiment. This judgment method clearly knows the more detailed power change situation of the air conditioner within a set cycle duration by plotting the air conditioner power change curve, and calculates the average power change rate of the air conditioner within the set cycle duration according to the air conditioner power change curve. Subsequently, the controller further judges and analyzes the average power change rate. When the average power change rate is greater than or equal to the over-limit change rate, the judgment result is that there is an over-limit fluctuation in the air conditioner's power; when the average power change rate is less than the over-limit change rate, the judgment result is that there is no over-limit fluctuation in the air conditioner's power.

[0082] According to some embodiments of the present invention, in the step of controlling the air conditioner to execute the heat load protection control logic when the inner coil temperature exceeds the set inner coil temperature, the heat load protection control logic includes:

[0083] Determine the frequency adjustment mode of the compressor according to the range of the inner coil temperature, and adjust the frequency of the compressor according to the frequency adjustment mode.

[0084] Further, according to the range of the temperature of the inner coil, determine the frequency adjustment mode of the compressor, and the steps of adjusting the frequency of the compressor according to the frequency adjustment mode specifically include:

[0085] Determine that the temperature of the inner coil is in the first temperature range, and adjust the frequency of the compressor according to the slow frequency reduction mode;

[0086] Determine that the temperature of the inner coil is in the second temperature range, and adjust the frequency of the compressor according to the fast frequency reduction mode;

[0087] Determine that the temperature of the inner coil is in the third temperature range and lasts for at least the first preset duration, and then control the compressor to stop.

[0088] Wherein, the first temperature range is less than the second temperature range, the second temperature range is less than the third temperature range, and the frequency reduction speed in the slow frequency reduction mode is less than the frequency reduction speed in the fast frequency reduction mode.

[0089] Further, after the step of controlling the compressor of the air conditioner to stop after determining that the temperature of the inner coil is in the third temperature range and lasts for at least the first preset duration, it further includes:

[0090] According to the shutdown duration of the compressor exceeding the second preset duration and the current temperature of the inner coil being lower than the preset startup temperature, control the compressor to restart;

[0091] After determining that the compressor restarts, adjust the frequency of the compressor according to the temperature of the inner coil.

[0092] In some specific embodiments, the steps of adjusting the frequency of the compressor according to the temperature of the inner coil after determining that the compressor restarts specifically include:

[0093] Determine that the temperature of the inner coil is in the third temperature range, and adjust the frequency of the compressor according to the fast frequency increase mode;

[0094] Determine that the temperature of the inner coil is in the fourth temperature range, and adjust the frequency of the compressor according to the slow frequency increase mode.

[0095] Wherein, the third temperature range is less than the fourth temperature range, and the frequency increase speed in the slow frequency increase mode is less than the frequency increase speed in the fast frequency increase mode.

[0096] For example, when the temperature of the inner coil exceeds 58 degrees, the system automatically enters the heat load protection control logic. When the temperature of the inner coil is between 58 - 62 °C, it is in the slow frequency reduction mode, with a 2 Hz reduction in 15 seconds; when the temperature of the inner coil is between 62 - 65 °C, it is in the fast frequency reduction mode, with a 10 Hz reduction in 15 seconds; when the temperature of the inner coil exceeds 65 °C and the time exceeds 10 seconds, the compressor stops abnormally. If the compressor has stopped for more than three minutes, when the temperature of the inner coil is below 50 °C, the compressor starts and operates according to the normal logic; when the temperature of the inner coil is between 50 - 52 °C, it is in the fast frequency increase mode, with a 10 Hz increase in 15 seconds; when the temperature of the inner coil is between 52 - 54 °C, it enters the slow frequency increase mode, with a 2 Hz increase in 15 seconds.

[0097] According to some embodiments of the present invention, after the step of obtaining the temperature of the inner coil of the indoor unit coil at every set detection duration, the heat load protection control method of the air conditioner further includes:

[0098] If the temperature of the inner coil does not exceed the set inner coil temperature, then control the air conditioner to operate at the current compressor frequency.

[0099] The heat load protection control device of the air conditioner provided by the present invention will be described below. The heat load protection control device of the air conditioner described below can be mutually corresponding and referred to the heat load protection control method of the air conditioner described above.

[0100] Such as Figure 2 As shown, the heat load protection control device of the air conditioner according to the second aspect embodiment of the present invention includes:

[0101] The first acquisition module 110 is used to obtain the temperature of the inner coil of the indoor unit coil at every set detection duration;

[0102] The first control module 120 is used to control the air conditioner to execute the heat load protection control logic if the temperature of the inner coil exceeds the set inner coil temperature, wherein the heat load protection control logic includes adjusting the power of the air conditioner according to the temperature of the inner coil;

[0103] The second acquisition module 130 is used to detect the power change state of the air conditioner in real time during the process of the air conditioner executing the heat load protection control logic;

[0104] The second control module 140 is used to correct the set detection duration according to the power change state and loop to execute the above steps.

[0105] The air conditioner according to the third aspect embodiment of the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the heat load protection control method of the air conditioner according to the first aspect embodiment of the present invention.

[0106] Figure 3 Schematic diagram of the physical structure of an electronic device is exemplified, such asFigure 3 As shown, the electronic device may include: a processor 810, a communications interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communications interface 820, and the memory 830 communicate with each other through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the heat load protection control method for the air conditioner, including: obtaining the inner coil temperature of the indoor unit coil every set detection duration; if the inner coil temperature exceeds the set inner coil temperature, controlling the air conditioner to execute the heat load protection control logic, where the heat load protection control logic includes adjusting the power of the air conditioner according to the inner coil temperature; during the process of the air conditioner executing the heat load protection control logic, detecting the power change state of the air conditioner in real time; correcting the set detection duration according to the power change state, and looping to execute the above steps.

[0107] In addition, when the logical instructions in the above-mentioned memory 830 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0108] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the heat load protection control method for the air conditioner provided by the above-mentioned various methods, including: obtaining the inner coil temperature of the indoor unit coil every set detection duration; if the inner coil temperature exceeds the set inner coil temperature, controlling the air conditioner to execute the heat load protection control logic, where the heat load protection control logic includes adjusting the power of the air conditioner according to the inner coil temperature; during the process of the air conditioner executing the heat load protection control logic, detecting the power change state of the air conditioner in real time; correcting the set detection duration according to the power change state, and looping to execute the above steps.

[0109] In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the heat load protection control method of the air conditioner provided by the above various methods, including: obtaining the internal coil temperature of the indoor unit coil every set detection duration; if the internal coil temperature exceeds the set internal coil temperature, controlling the air conditioner to execute the heat load protection control logic, where the heat load protection control logic includes adjusting the power of the air conditioner according to the internal coil temperature; during the process of the air conditioner executing the heat load protection control logic, detecting the power change state of the air conditioner in real time; correcting the set detection duration according to the power change state, and looping to execute the above steps.

[0110] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0111] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A heat load protection control method for an air conditioner, characterized in that Including: Obtain the inner coil temperature of the indoor unit coil every set detection duration; If the inner coil temperature exceeds the set inner coil temperature, control the air conditioner to execute the heat load protection control logic, wherein the heat load protection control logic includes adjusting the power of the air conditioner according to the inner coil temperature; During the process of the air conditioner executing the heat load protection control logic, continuously detect the power change state of the air conditioner; According to the power change state, correct the set detection duration and loop to execute the above steps.

2. The thermal load protection control method of the air conditioner according to claim 1, wherein, The step of correcting the set detection duration according to the power change state specifically includes: Judge whether the power of the air conditioner has an over-limit fluctuation according to the power change state, and determine the correction method according to the judgment result and correct the set detection duration.

3. The heat load protection control method of the air conditioner according to claim 2, characterized in that, The step of determining the correction method according to the judgment result and correcting the set detection duration specifically includes: In the case that the power of the air conditioner has an over-limit fluctuation, extend the set detection duration on the basis of the original value to obtain the corrected set detection duration; In the case that the power of the air conditioner does not have an over-limit fluctuation, control the set detection duration to remain unchanged at the original value.

4. The heat load protection control method of the air conditioner according to claim 3, characterized in that The step of judging whether the power of the air conditioner has an over-limit fluctuation according to the power change state specifically includes: If it is determined that the difference between the maximum detection value and the minimum detection value of the power of the air conditioner within the set cycle duration is greater than the set over-limit difference value, the judgment result is that the power of the air conditioner has an over-limit fluctuation; If it is determined that the difference between the maximum detection value and the minimum detection value of the power of the air conditioner within the set cycle duration is less than or equal to the set over-limit difference value, the judgment result is that the power of the air conditioner does not have an over-limit fluctuation.

5. The heat load protection control method for an air conditioner according to claim 3, characterized in that, The step of judging whether the power of the air conditioner has an over-limit fluctuation according to the power change state specifically includes: Plot all detected air conditioner power detection values into an air conditioner power change curve; Calculate the average power change rate of the air conditioner within the set cycle duration according to the air conditioner power change curve, and judge whether the power of the air conditioner has an over-limit fluctuation according to the comparison result between the average power change rate and the over-limit change rate; Wherein, when the average power change rate is greater than or equal to the over-limit change rate, the judgment result is that the power of the air conditioner has an over-limit fluctuation; when the average power change rate is less than the over-limit change rate, the judgment result is that the power of the air conditioner does not have an over-limit fluctuation.

6. The heat load protection control method for an air conditioner according to any one of claims 1 to 5, characterized in that, In the step of if the inner coil temperature exceeds the set inner coil temperature, control the air conditioner to execute the heat load protection control logic, the heat load protection control logic includes: Determine the frequency adjustment mode of the compressor according to the range of the inner coil temperature, and adjust the frequency of the compressor according to the frequency adjustment mode.

7. The thermal load protection control method for an air conditioner according to claim 6, characterized in that, The step of determining the frequency adjustment mode of the compressor according to the range of the inner coil temperature and adjusting the frequency of the compressor according to the frequency adjustment mode specifically includes: Determine that the temperature of the inner coil is within the first temperature range, and adjust the frequency of the compressor according to the slow frequency reduction mode; Determine that the temperature of the inner coil is within the second temperature range, and adjust the frequency of the compressor according to the fast frequency reduction mode; Determine that the temperature of the inner coil is within the third temperature range and lasts for at least the first preset duration, and then control the compressor to stop; Wherein, the first temperature range is less than the second temperature range, the second temperature range is less than the third temperature range, and the frequency reduction speed in the slow frequency reduction mode is less than the frequency reduction speed in the fast frequency reduction mode.

8. The heat load protection control method of the air conditioner according to claim 7, characterized in that After the step of controlling the compressor of the air conditioner to stop when it is determined that the temperature of the inner coil is within the third temperature range and lasts for at least the first preset duration, the method further includes: When the shutdown duration of the compressor exceeds the second preset duration and the current temperature of the inner coil is lower than the preset startup temperature, control the compressor to restart; After determining that the compressor restarts, adjust the frequency of the compressor according to the temperature of the inner coil.

9. The method for controlling the heat load protection of an air conditioner according to claim 9, characterized in that The step of adjusting the frequency of the compressor according to the temperature of the inner coil after determining that the compressor restarts specifically includes: Determine that the temperature of the inner coil is within the third temperature range, and adjust the frequency of the compressor according to the fast frequency increase mode; Determine that the temperature of the inner coil is within the fourth temperature range, and adjust the frequency of the compressor according to the slow frequency increase mode; Wherein, the third temperature range is less than the fourth temperature range, and the frequency increase speed in the slow frequency increase mode is less than the frequency increase speed in the fast frequency increase mode.

10. The heat load protection control method of the air conditioner according to any one of claims 1 to 5, characterized in that, After the step of obtaining the temperature of the inner coil of the indoor unit coil every set detection duration, the method further includes: If the temperature of the inner coil does not exceed the set temperature of the inner coil, control the air conditioner to operate at the current compressor frequency.

11. A heat load protection control device for an air conditioner, characterized in that, It includes: A first acquisition module, configured to obtain the temperature of the inner coil of the indoor unit coil every set detection duration; A first control module, configured to control the air conditioner to execute the heat load protection control logic according to the temperature of the inner coil exceeding the set temperature of the inner coil, wherein the heat load protection control logic includes adjusting the power of the air conditioner according to the temperature of the inner coil; A second acquisition module, configured to detect the power change state of the air conditioner in real time during the process of the air conditioner executing the heat load protection control logic; A second control module, configured to correct the set detection duration according to the power change state, and loop to execute the above steps.

12. An air conditioner, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the heat load protection control method of the air conditioner according to any one of claims 1 to 10.

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