Air conditioner control method

Abstract

The invention provides an air conditioner control method which comprises the steps that the air inlet temperature of an air conditioner is obtained, and the air inlet temperature is compared with a first temperature threshold value; when the air inlet temperature is higher than a first temperature threshold value; the indoor unit pipe temperature of the air conditioner is obtained, and the indoor unit pipe temperature is compared with a second temperature threshold value; and according to the comparison result, controlling the air conditioner to execute an adjusting program or controlling the air conditioner to execute a cleaning program. The problem that in the prior art, an air conditioner is prone to generating noise in a heating mode is solved.

Description

Technical Field

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

[0002] At present, split air conditioners are the best choice for people to escape the heat in summer and the cold in winter due to their large cooling and heating capacity and diverse usage scenarios. Especially in areas where the winter is cold and there is no heating, the heating function of the air conditioner affects the daily life of users.

[0003] However, wall-mounted air conditioners are usually installed indoors near the ceiling, resulting in poor heat exchange at the indoor air inlet and high temperature, or a lot of dust at the indoor air inlet, resulting in poor heat exchange at the indoor unit. The above situations will cause the indoor pipe temperature to rise. When the pipe temperature is too high, the refrigerant is not completely liquefied and flows into the throttling device under high pressure and high speed. It flows violently in the throttling device, increasing the degree of turbulence and causing abnormal noise from the air conditioner. Summary of the invention

[0004] The main purpose of the present invention is to provide an air conditioner control method to solve the problem that the air conditioner in the prior art easily generates noise in the heating mode.

[0005] In order to achieve the above object, according to one aspect of the present invention, a method for controlling an air conditioner is provided. When the air conditioner is operated in a heating mode, the control method comprises:

[0006] Acquire the air inlet temperature of the air conditioner, and compare the air inlet temperature with a first temperature threshold;

[0007] When the inlet air temperature is higher than the first temperature threshold;

[0008] Acquire the internal pipe temperature of the air conditioner, and compare the internal pipe temperature with a second temperature threshold;

[0009] According to the comparison result, the air conditioner is controlled to perform a conditioning program or the air conditioner is controlled to perform a cleaning program.

[0010] Furthermore, the adjustment procedure of the air conditioner includes:

[0011] Controlling the compressor of the air conditioner to reduce the operating frequency; and / or,

[0012] Control the indoor fan of the air conditioner to increase the operating speed.

[0013] Further, the cleaning procedure of the air conditioner includes:

[0014] Control the air conditioner to clean the indoor air inlet.

[0015] Further, according to the comparison result, the method of controlling the air conditioner to execute the adjustment program or the method of controlling the air conditioner to execute the cleaning program includes:

[0016] When the internal machine pipe temperature is greater than a second temperature threshold, controlling the air conditioner to execute a regulation program;

[0017] When the internal pipe temperature is less than or equal to the second temperature threshold, the air conditioner is controlled to execute a cleaning procedure.

[0018] Further, the regulation procedure of the air conditioner includes: reducing the operating frequency of the compressor and increasing the speed of the indoor fan;

[0019] The control method also includes:

[0020] The temperature difference between the indoor pipe temperature and the second temperature threshold is obtained, and according to the size of the temperature difference, the operating frequency of the compressor is controlled to decrease by a first set value, and the speed of the indoor fan is controlled to increase by a second set value.

[0021] Furthermore, the air conditioner control method further includes:

[0022] For every 1°C increase in temperature difference, the operating frequency of the compressor is controlled to decrease by 4Hz to 6Hz, and the speed of the indoor fan is controlled to increase by 80r to 120r.

[0023] Furthermore, the air conditioner control method further includes:

[0024] The real-time operating frequency of the compressor is obtained, and when the real-time operating frequency of the compressor is reduced to a third set value, the compressor is controlled to operate at the set frequency; wherein the set frequency is greater than the third set value.

[0025] Furthermore, the air conditioner control method further includes:

[0026] In the process of comparing the inlet air temperature with the first temperature threshold, when the inlet air temperature is higher than the first temperature threshold for the first time, starting the time delay timing module;

[0027] During the operation of the time delay timing module, if the inlet air temperature continues to be higher than the first temperature threshold, after the time delay timing module ends its operation, the internal unit pipe temperature is compared with the second temperature threshold.

[0028] Furthermore, the air conditioner control method further includes: during the operation of the time delay timing module, if it is detected that the inlet air temperature is lower than the first temperature threshold, controlling the time delay timing module to restart timing.

[0029] Furthermore, the air conditioner control method further includes:

[0030] Before obtaining the inlet air temperature, the indoor temperature is obtained, and the first temperature threshold = indoor temperature + fourth set value; wherein, after the air conditioner turns on the heating mode, the inlet air temperature and the indoor temperature are obtained at a predetermined frequency, and the inlet air temperature is compared with the first temperature threshold.

[0031] By applying the technical solution of the present invention, according to the air conditioner control method provided by the present application, when the air conditioner is operated in the heating mode, the control method includes obtaining the air inlet temperature of the air conditioner, and comparing the air inlet temperature with a first temperature threshold; when the air inlet temperature is higher than the first temperature threshold; obtaining the internal pipe temperature of the air conditioner, and comparing the internal pipe temperature with a second temperature threshold; and according to the comparison result, controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program. By real-time monitoring of the air inlet temperature and the internal pipe temperature, and comparing them with the preset temperature threshold, the present application can intelligently identify and suppress abnormal noise generated by excessive pipe temperature in the heating mode. This noise suppression method not only improves the operating quality of the air conditioner, but also significantly improves the comfort of the user during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A first flow chart showing an embodiment of an air conditioner control method according to the present invention; and

[0034] Figure 2 A second flow chart of the air conditioner control method according to the present invention is shown. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] As mentioned in the background technology, split air conditioners are the best choice for people to escape the heat in summer and the first choice for avoiding the cold in winter due to their large cooling and heating capacity and diverse usage scenarios. Especially in areas where winter is cold and there is no heating, the heating function of the air conditioner affects the daily life of users. However, the actual usage scenarios of air conditioners are complex and changeable. Sometimes the air inlet of the indoor unit is blocked by dirt or foreign objects, resulting in an increase in the temperature of the indoor unit pipe, which will lead to incomplete liquefaction of the indoor unit refrigerant. The gaseous refrigerant is under high pressure and quickly impacts the throttling device, resulting in abnormal noise (similar to a sharp whistle). The noise may even be transmitted to the indoor unit, affecting user use. Therefore, in view of the above technical problems, the air conditioner control method in the present application, based on the premise that the air conditioner is running in heating mode, includes obtaining the air inlet temperature of the air conditioner, comparing the air inlet temperature with a first temperature threshold, and when the air inlet temperature is higher than the first temperature threshold, it is judged that the air inlet temperature of the air conditioner is abnormal, and further, obtaining the internal pipe temperature of the air conditioner, comparing the internal pipe temperature with a second temperature threshold, and according to the comparison result, controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program. In this way, the internal pipe temperature of the air conditioner is monitored in real time, and the cause of the noise generated by the air conditioner can be automatically determined, and different programs are executed respectively according to the comparison result of the internal pipe temperature with the second temperature threshold, which can intelligently identify and suppress the abnormal noise generated by excessively high pipe temperature in the heating mode.

[0037] Please refer to Figure 1 and Figure 2 The present application provides an air conditioner control method. When the air conditioner is operated in a heating mode, the control method includes: obtaining the air inlet temperature of the air conditioner, and comparing the air inlet temperature with a first temperature threshold; when the air inlet temperature is higher than the first temperature threshold; obtaining the internal pipe temperature of the air conditioner, and comparing the internal pipe temperature with a second temperature threshold; and according to the comparison result, controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program.

[0038] According to the air conditioner control method provided by the present application, when the air conditioner is operated in heating mode, the control method includes obtaining the air inlet temperature of the air conditioner, and comparing the air inlet temperature with a first temperature threshold; when the air inlet temperature is higher than the first temperature threshold; obtaining the internal pipe temperature of the air conditioner, and comparing the internal pipe temperature with a second temperature threshold; and according to the comparison result, controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program. By real-time monitoring of the air inlet temperature and the internal pipe temperature, and comparing them with the preset temperature threshold, the present application can intelligently identify and suppress abnormal noise generated by excessive pipe temperature in heating mode. This noise suppression method not only improves the operating quality of the air conditioner, but also significantly improves the comfort of users during use.

[0039] The air conditioner adjustment procedure includes: controlling the air conditioner compressor to reduce the operating frequency; and / or controlling the air conditioner indoor fan to increase the operating speed. In heating mode, when the indoor pipe temperature is too high, by reducing the compressor frequency and increasing the indoor fan speed, the refrigerant flow rate can be effectively controlled, the turbulence of the gaseous refrigerant under high pressure can be reduced, and the abnormal noise of the throttling device can be significantly reduced.

[0040] The cleaning procedure of the air conditioner includes: controlling the air conditioner to clean the indoor air inlet. When the air inlet temperature rises abnormally but does not reach the condition of excessive temperature of the internal machine pipe, it is determined that the indoor air inlet is blocked, causing the difference between the indoor temperature and the air inlet temperature to be too large. The system prompts the user to clean the air inlet through the user interface or remote control, avoiding the decrease in heat exchange efficiency caused by the blockage of the air inlet, extending the service life of the air conditioner, and also improving the self-maintenance ability of the system.

[0041] In the specific implementation process, according to the comparison result, the method of controlling the air conditioner to execute the adjustment program or the method of controlling the air conditioner to execute the cleaning program includes: when the temperature of the internal machine pipe is greater than the second temperature threshold, the air conditioner is controlled to execute the adjustment program; when the temperature of the internal machine pipe is less than or equal to the second temperature threshold, the air conditioner is controlled to execute the cleaning program. When the temperature of the internal machine pipe exceeds the second temperature threshold, the adjustment program is automatically executed, that is, the compressor frequency is reduced and / or the indoor fan speed is increased, which can effectively avoid the impact of the gaseous refrigerant on the throttling device and reduce the abnormal noise generated thereby. If the air inlet temperature rises abnormally, but the temperature of the internal machine pipe does not reach the second temperature threshold, the system will trigger the cleaning program to remind the user that there may be problems with the air inlet being blocked or dust accumulation, and cleaning and maintenance are required; such intelligent control avoids the situation where the air conditioner makes a misjudgment. The intelligent control logic not only solves the noise problem, but also provides users with more meticulous and thoughtful services through cleaning prompts and avoiding low-frequency abnormal noises.

[0042] In the embodiment provided in the present application, the adjustment procedure of the air conditioner includes: reducing the operating frequency of the compressor and increasing the speed of the indoor fan at the same time; the control method also includes: obtaining the temperature difference between the indoor pipe temperature and the second temperature threshold, and according to the size of the temperature difference, controlling the operating frequency of the compressor to reduce the first set value, and controlling the speed of the indoor fan to increase the second set value.

[0043] By obtaining the temperature difference between the internal unit pipe temperature and the second temperature threshold, the operating frequency of the compressor and the speed of the indoor fan are dynamically adjusted, which can accurately control the liquefaction degree of the refrigerant, reduce the abnormal noise caused by turbulence, and improve the quietness of the air conditioner operation, so that users can enjoy the warmth without being disturbed by noise. Reducing the operating frequency of the compressor while increasing the speed of the indoor fan can avoid unnecessary high-load operation of the compressor while ensuring sufficient heat exchange and refrigerant liquefaction, thereby achieving energy-saving effects, while maintaining heating efficiency and ensuring comfortable indoor temperature.

[0044] The control method sets the minimum operating frequency threshold of the compressor to avoid the "gurgling" noise that may be caused by the compressor running at too low a frequency, ensuring that no new noise problems are introduced when the air conditioner is performing noise control, thereby improving the overall operating stability. According to the temperature difference between the internal pipe temperature and the second temperature threshold, the reduction range of the compressor frequency and the increase range of the indoor fan speed are automatically adjusted to achieve an adaptive adjustment effect. This hierarchical adjustment can more finely control the operating status of the air conditioner, adapt to different environments and usage conditions, and improve the flexibility and efficiency of control.

[0045] When the inlet air temperature rises abnormally but does not reach the condition where the internal unit pipe temperature is too high, the control method can intelligently prompt the user to clean the indoor air inlet to prevent dust or foreign matter from clogging and causing a decrease in heat exchange efficiency, reducing maintenance requirements and extending the service life of the air conditioner.

[0046] Specifically, the air conditioner control method also includes: for every 1°C increase in temperature difference, the operating frequency of the compressor is controlled to decrease by 4Hz to 6Hz, and the speed of the indoor fan is controlled to increase by 80r to 120r. By accurately controlling the compressor frequency and the indoor fan speed, the abnormal noise caused by excessive pipe temperature in the heating mode can be effectively suppressed. This refined adjustment strategy can more accurately adjust the operating state of the air conditioner, ensure that the refrigerant is completely liquefied under high pressure, reduce the impact of the gas, and thus reduce the noise generated by the throttling device. Increasing the speed of the indoor fan helps to improve air flow and promote sufficient heat exchange of the refrigerant. The liquefaction process is more complete, which not only helps to reduce noise, but also improves the efficiency of the refrigerant circulation, which plays an important role in maintaining the stable operation of the air conditioner and improving energy efficiency.

[0047] The air conditioner control method further includes: acquiring a real-time operating frequency of the compressor, and when the real-time operating frequency of the compressor decreases to a third set value, controlling the compressor to operate at a set frequency; wherein the set frequency is greater than the third set value.

[0048] Specifically, in this embodiment, the third setting value is 40Hz. When the compressor frequency is reduced to 40Hz, the operating frequency of the compressor needs to be increased. Preferably, the compressor operates at a frequency of 41Hz. The reason is that when the compressor operates at less than 41Hz, the gap between the rotating shaft and the flange is large, which will produce abnormal noise.

[0049] The compressor is the core component of the air conditioner, and its operating status is directly related to the stability and life of the entire system. By setting the threshold of the minimum operating frequency and automatically adjusting to a slightly higher frequency when approaching or reaching this threshold, it can effectively avoid the increase in the gap between the shaft and the flange caused by too low a frequency, prevent the generation of abnormal noise, and thus protect the compressor from potential damage and extend the service life of the air conditioner. When the operating frequency of the compressor drops abnormally, the system automatically issues an abnormal alarm, which not only reminds the user to check and repair in time, but also can start the backup control strategy or stop the compressor operation to avoid further deterioration of the fault and ensure the safety of system operation.

[0050] In the embodiment provided in the present application, the air conditioner control method also includes: in the process of comparing the inlet air temperature with the first temperature threshold, when the inlet air temperature is higher than the first temperature threshold for the first time, starting the time delay timing module; in the process of the time delay timing module running, when the inlet air temperature is continuously higher than the first temperature threshold, after the time delay timing module ends running, comparing the indoor machine pipe temperature with the second temperature threshold.

[0051] The activation of the time delay timing module can effectively avoid frequent system misoperation caused by instantaneous fluctuations in ambient temperature or temporary abnormalities in sensors, such as frequent adjustments to the compressor frequency and unnecessary increases in the indoor fan speed. This mechanism ensures that only when the inlet air temperature is continuously higher than the first threshold will the system further detect the indoor pipe temperature and take corresponding control measures, thereby enhancing the stability and reliability of the control system.

[0052] Under the action of the time delay mechanism, if the inlet air temperature continues to be abnormal, the system can accurately determine the problem that may be caused by the blockage of the air inlet or the excessive temperature of the internal pipe, and promptly prompt the user to clean or perform the adjustment procedure, preventing the decrease in heat exchange efficiency and system failure caused by dust accumulation or excessive temperature of the internal pipe, and ensuring the efficient operation of the air-conditioning equipment.

[0053] The air conditioner control method further includes: during the operation of the time delay timing module, if it is detected that the air inlet temperature is lower than the first temperature threshold, controlling the time delay timing module to restart timing.

[0054] When the temperature sensor detects that the inlet air temperature exceeds the first temperature threshold (inlet air temperature + 5°C), the control module records the temperature reading and starts the time delay timer. During the time delay period (e.g. 1 minute), the system continues to monitor the inlet air temperature. If the inlet air temperature continues to be higher than the first temperature threshold during this period, the time delay timer will continue to count until the entire cycle is completed. If the inlet air temperature falls below the first temperature threshold during the time delay period, the timer will be reset and the control module will stop subsequent pipe temperature detection and control actions to avoid unnecessary adjustments. Only when the time delay period is completely completed and the inlet air temperature is always higher than the first temperature threshold during this period, the control module will detect the internal machine pipe temperature and, based on the comparison result of the pipe temperature with the second temperature threshold (65°C), execute the operation of reducing the compressor frequency and / or the air inlet cleaning prompt.

[0055] Assume that in heating mode, the temperature sensor detects that the inlet air temperature suddenly jumps from 25°C to 35°C, exceeding the first temperature threshold (assuming the current ambient temperature is 30°C and the inlet air temperature threshold is 35°C). At this time, the control module starts the time delay timer (for example, 1 minute). Within this 1 minute, if the inlet air temperature continues to be higher than the first temperature threshold, the system will perform pipe temperature detection and control actions after 1 minute; if the inlet air temperature drops below 35°C within 1 minute, the system will consider this to be an instantaneous abnormal fluctuation, the timer will be reset, and the system will return to normal monitoring status, thereby avoiding unnecessary compressor frequency adjustments and user interference.

[0056] Furthermore, the air conditioner control method further includes: before obtaining the inlet air temperature, obtaining the indoor temperature, the first temperature threshold = indoor temperature + fourth set value. The control method further includes: after the air conditioner turns on the heating mode, obtaining the inlet air temperature and the indoor temperature at a predetermined frequency, and comparing the inlet air temperature with the first temperature threshold.

[0057] By obtaining the indoor temperature before obtaining the inlet air temperature, and setting the first temperature threshold to the indoor temperature plus the fourth set value (the set value is determined according to the typical operating conditions and design objectives of the air conditioner, such as 5°C), the control method can more accurately reflect the actual situation of the air conditioner operating environment, thereby achieving more intelligent and efficient temperature control and noise suppression. Using the indoor temperature as the basis for setting the threshold can adapt to different usage scenarios and ambient temperatures, ensuring the flexibility and adaptability of the control logic.

[0058] By continuously obtaining the inlet air temperature and indoor temperature at a predetermined frequency (such as once every 1 second), the relationship between the inlet air temperature and the indoor temperature can be monitored in real time, ensuring that the adjustment program or cleaning program is quickly started when the temperature rises abnormally, avoiding delayed response and poor control effect caused by too low monitoring frequency.

[0059] The present invention compares the difference between the inlet air temperature and the first temperature threshold A (inlet air temperature + 5°C). If the inlet air temperature is higher, it indicates that the inlet air temperature is abnormal. On this basis, the indoor unit pipe temperature is compared with the second temperature threshold B (65°C) to determine whether the air conditioner needs to be cleaned or generates abnormal noise. If the indoor unit pipe temperature is greater than threshold B (65°C), the throttling device will generate abnormal noise. Conversely, the indoor unit air inlet will be partially blocked, and it is necessary to check and clean the indoor unit air inlet in time. Once the abnormal noise generation condition is triggered, for every 1°C difference between the pipe temperature and threshold B, the compressor will reduce 5Hz and the indoor unit speed will increase 100r, so that the refrigerant can be quickly liquefied in a short time to prevent overheating and produce more refrigerant gas, thereby avoiding abnormal noise. The compressor frequency can be reduced to a minimum of threshold C + 1Hz to prevent abnormal noise and avoid new usage problems.

[0060] like Figure 2 As shown, the specific control method of this application is as follows:

[0061] When the weather is cold, the user turns on the heating mode. At this time, the temperature sensor on the indoor unit detects the room temperature with a detection frequency of 1s / time. Since the room temperature needs to be compared with the inlet air temperature, frequent detection is required. This temperature is related to the normal progress of subsequent programs and needs to be detected in real time to prevent slow detection, which will cause the subsequent programs to be unable to proceed, and then it will be impossible to determine the generation of abnormal noise. After that, the inlet air temperature is compared with the threshold value A, where threshold value A = room temperature + 5°C (since the indoor unit of the air conditioner is generally hung at a higher place in the room, the hot air rises, so there is a 1-2°C difference between the room temperature and the inlet air temperature of the indoor unit of the air conditioner. Only when the inlet air temperature is greater than room temperature + 5°C, a fault will generally occur. This fault is generally caused by the air inlet being blocked. If the air inlet is blocked, the air intake volume will be reduced and the inlet air temperature will rise rapidly). If the inlet air temperature is greater than threshold value A, then it is immediately determined whether the indoor unit pipe temperature is greater than threshold value B (threshold value B is 65°C. According to field tests, when the pipe temperature is greater than 65°C, the refrigerant in the indoor unit is not completely liquefied, resulting in more gaseous refrigerant. Since the pipeline is in a high temperature and high pressure state, the gaseous refrigerant has a large flow rate and will generate abnormal noise when flowing through the throttling device.). If it is less than, it is only necessary to detect whether the air inlet of the indoor unit is blocked and clean it in time to reduce the difference between the inlet air temperature and the room temperature, and the prototype can operate normally. If the pipe temperature is greater than threshold value B, the refrigerant will be severely gasified and abnormal noise will be generated. To avoid this phenomenon, for every 1°C difference between the pipe temperature and threshold B, the compressor is reduced by 5Hz, and the internal fan speed is increased by 100r. Reducing the compressor frequency can reduce the refrigerant flow rate, reduce the degree of gaseous refrigerant hitting the throttling device, and increase the internal fan speed, mainly to increase heat exchange and allow the refrigerant to liquefy in time. The liquefied refrigerant has a higher flow rate in time, and when it flows through the throttling device, the turbulence is small and no obvious abnormal noise is generated.

[0062] Although the compressor frequency can be reduced, it cannot be too low in heating mode. This is mainly because when a low-frequency compressor is running, the gap between the shaft and the flange is too large, resulting in a "gurgling" abnormal sound. To avoid this, general air conditioning designs strictly limit the minimum frequency of compressor operation. In the present invention, the frequency must be greater than the threshold C (C = 40Hz, and abnormal sounds will occur if it is lower than 40Hz). If the compressor frequency is reduced to CHz, it will automatically increase by 1Hz to C+1Hz to avoid abnormal sounds.

[0063] In another embodiment provided by the present application, an acoustic sensor is also provided in the air conditioner to monitor the sound changes during operation in real time. Once abnormal noise is detected, even if the temperature has not reached the predetermined threshold, the system can quickly take measures (such as slightly adjusting the compressor frequency) to prevent the noise from further increasing. This control method uses sound feedback for real-time monitoring, which improves the sensitivity and response speed of the control.

[0064] Specifically, a high-precision acoustic sensor is installed inside the air conditioner, especially near the compressor and the throttling device. The acoustic sensor can detect changes in aerodynamic noise, mechanical vibration noise and other abnormal sound waves using acoustic wave sensing technology. A sound wave feature database is pre-established in the control system of the air conditioner, which includes sound wave patterns under normal operating conditions and sound wave features that may be generated by abnormal conditions such as excessive pipe temperature, low-frequency operation of the compressor, and "gurgling" abnormal noises. The recognition accuracy of the database is improved through machine learning algorithm training. After the air conditioner turns on the heating mode, the acoustic sensor monitors the changes in the sound waves inside the air conditioner at a high frequency (such as once per second) and transmits the data to the control system in real time for analysis. The control system analyzes the sound data collected by the acoustic sensor in real time and compares it with the patterns in the acoustic wave feature database to identify whether there is abnormal noise. If a sound matching the abnormal noise characteristics is detected, the system can immediately start the response mechanism even if the temperature sensor has not reached the preset temperature threshold; once the system confirms the existence of abnormal noise, it will take immediate measures, such as slightly adjusting the frequency of the compressor (lowering the frequency to an appropriate level, but higher than the minimum frequency threshold C+1Hz to prevent the "gurgling" abnormal sound), and moderately increasing the speed of the indoor fan to optimize the liquefaction efficiency of the refrigerant and reduce the impact of the gaseous refrigerant on the throttling device, thereby reducing noise. At the same time, the system can adjust the threshold A of the difference between the inlet air temperature and the room temperature to adapt to the current sound wave environment and further optimize the control effect.

[0065] Furthermore, through an Internet connection, the air conditioner can send the sound wave analysis results to the service center or the user's mobile device to provide remote diagnosis and maintenance suggestions. The system can record the pattern and frequency of abnormal noise to help maintenance personnel quickly locate the problem and reduce maintenance time and cost.

[0066] In a specific implementation, after a sound matching the abnormal noise characteristics is detected, the internal engine pipe temperature is obtained, and the internal engine pipe temperature is compared with a second temperature threshold to further analyze the potential cause of the noise.

[0067] The main difference between this embodiment and the above-mentioned embodiment is that this embodiment uses a sound wave sensor to determine whether the air conditioner makes an abnormal sound. When it is detected that the air conditioner indoor unit makes an abnormal sound due to excessive pipe temperature, the indoor unit pipe temperature is compared with a second temperature threshold, and then the operation program of the air conditioner is controlled according to the comparison result of the indoor unit pipe temperature and the second temperature threshold.

[0068] Through the above specific implementation methods, the air conditioner control method of the present invention can not only quickly respond to potential abnormal noise problems according to the sound wave characteristics, but also perform more precise fault diagnosis and control optimization in combination with the internal pipe temperature monitoring, ensuring that the air conditioner runs more stably, quietly and efficiently in the heating mode.

[0069] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0070] According to the air conditioner control method provided by the present application, the method includes obtaining the air inlet temperature of the air conditioner, comparing the air inlet temperature with a first temperature threshold; when the air inlet temperature is higher than the first temperature threshold; obtaining the internal pipe temperature of the air conditioner, comparing the internal pipe temperature with a second temperature threshold; and according to the comparison result, controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program. By real-time monitoring of the air inlet temperature and the internal pipe temperature, and comparing them with a preset temperature threshold, the present application can intelligently identify and suppress abnormal noise generated by excessive pipe temperature in the heating mode. This noise suppression method not only improves the operating quality of the air conditioner, but also significantly improves the comfort of the user during use.

[0071] Furthermore, the air conditioner control method of the present application is used to detect the difference between the internal fan and the room temperature, and at the same time detect whether the internal machine pipe temperature is too high, so as to determine whether the air inlet of the air conditioner is blocked or the throttling device has abnormal noise; by significantly reducing the compressor frequency and increasing the internal fan speed, the internal fan pipe temperature is reduced, the refrigerant is fully liquefied, the refrigerant gas generation is reduced, and the generation of abnormal noise of the throttling device is avoided; the minimum frequency of the compressor is limited to prevent the generation of "gurgling" noise.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0076] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, when the air conditioner is operated in a heating mode, characterized in that: The control method comprises: Acquire an air inlet temperature of the air conditioner, and compare the air inlet temperature with a first temperature threshold; When the inlet air temperature is higher than the first temperature threshold; Acquiring an internal pipe temperature of the air conditioner, and comparing the internal pipe temperature with a second temperature threshold; According to the comparison result, the air conditioner is controlled to perform a conditioning program or the air conditioner is controlled to perform a cleaning program.

2. The air conditioner control method according to claim 1, characterized in that: The adjustment procedure of the air conditioner includes: Controlling the compressor of the air conditioner to reduce the operating frequency; and / or, The indoor fan of the air conditioner is controlled to increase the operating speed.

3. The air conditioner control method according to claim 1, characterized in that: The cleaning procedure of the air conditioner includes: The air conditioner is controlled to clean the indoor air inlet.

4. The air conditioner control method according to claim 1, characterized in that: The method of controlling the air conditioner to execute an adjustment program or controlling the air conditioner to execute a cleaning program according to the comparison result includes: When the internal machine pipe temperature is greater than the second temperature threshold, controlling the air conditioner to execute a regulation program; When the internal machine pipe temperature is less than or equal to the second temperature threshold, the air conditioner is controlled to execute a cleaning procedure.

5. The air conditioner control method according to claim 1, characterized in that: The adjustment procedure of the air conditioner includes: reducing the operating frequency of the compressor and increasing the speed of the indoor fan; The control method further comprises: The temperature difference between the indoor unit pipe temperature and the second temperature threshold is obtained, and according to the size of the temperature difference, the operating frequency of the compressor is controlled to decrease by a first set value, and the speed of the indoor fan is controlled to increase by a second set value.

6. The air conditioner control method according to claim 5, characterized in that: The air conditioner control method further comprises: For every 1°C increase in the temperature difference, the operating frequency of the compressor is controlled to decrease by 4Hz to 6Hz, and the speed of the indoor fan is controlled to increase by 80r to 120r.

7. The air conditioner control method according to claim 5, characterized in that: The air conditioner control method further comprises: Acquiring the real-time operating frequency of the compressor, and when the real-time operating frequency of the compressor decreases to a third set value, controlling the compressor to operate at the set frequency; Wherein, the set frequency is greater than the third set value.

8. The air conditioner control method according to claim 1, characterized in that: The air conditioner control method further comprises: In the process of comparing the inlet air temperature with the first temperature threshold, when the inlet air temperature is higher than the first temperature threshold for the first time, starting a time delay timing module; During the operation of the time delay timing module, if the inlet air temperature is continuously higher than the first temperature threshold, after the time delay timing module ends its operation, the internal unit pipe temperature is compared with the second temperature threshold.

9. The air conditioner control method according to claim 8, characterized in that: The air conditioner control method further comprises: During the operation of the time delay timing module, if it is detected that the air inlet temperature is lower than the first temperature threshold, the time delay timing module is controlled to restart timing.

10. The air conditioner control method according to claim 1, characterized in that: The air conditioner control method further comprises: Before obtaining the inlet air temperature, obtaining the indoor temperature, the first temperature threshold = indoor temperature + fourth set value; After the air conditioner turns on the heating mode, the inlet air temperature and the indoor temperature are obtained at a predetermined frequency, and the inlet air temperature is compared with the first temperature threshold.

Images