Control method and control device of air conditioner outdoor fan and air conditioner

Abstract

The application provides a control method and device of an outdoor fan of an air conditioner and the air conditioner. The control method of the outdoor fan of the air conditioner comprises the following steps: obtaining a correlation between a condensing pressure of a compressor and a rotating speed of the outdoor fan; obtaining an outdoor ambient temperature and a current condensing pressure of the compressor; adjusting the correlation according to the outdoor ambient temperature; and adjusting the rotating speed of the outdoor fan according to the current condensing pressure and the adjusted correlation. The control method considers the influence of the outdoor ambient temperature on each preset parameter in the correlation, thereby adaptively adjusting the correlation under different outdoor ambient temperatures, improving the diversity of the scenario adapted by the control method, making the method cover all weather and climate environments as much as possible, and making the control means of the control method more accurate and targeted.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a control method, control device, and air conditioner for an outdoor fan. Background Technology

[0002] In related technologies, outdoor fans typically use PID control. PID control is executed by collecting outdoor temperature and coil pressure. However, PID control generally works well in a closed environment. Outdoor fans are placed outdoors and are affected by weather and climate changes. The ambient temperature varies widely, which can lead to unstable fan control or frequent start-stop.

[0003] Therefore, the method of controlling the speed of outdoor fans using coil pressure in related technologies suffers from poor adaptability and unstable control. Among these, the PID controller (Proportional-Integral-Derivative controller) is a common feedback loop component in industrial control applications, consisting of a proportional unit (P), an integral unit (I), and a differential unit (D). Summary of the Invention

[0004] This invention provides a control method, control device, and air conditioner for an outdoor fan of an air conditioner, which addresses the deficiencies in the prior art and achieves the following technical effects: it not only improves the diversity of scenarios that this control method can adapt to, enabling it to cover as many weather and climate environments as possible, but also makes the control means of this control method more precise and targeted.

[0005] A control method for an outdoor air conditioner fan according to a first aspect embodiment of the present invention includes:

[0006] Obtain the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed;

[0007] Obtain the outdoor ambient temperature and the current condensing pressure of the compressor;

[0008] The correlation is adjusted based on the outdoor ambient temperature;

[0009] The speed of the outdoor fan is adjusted according to the current condensing pressure and the adjusted correlation.

[0010] According to one embodiment of the present invention, the association relationship includes a first association stage, a second association stage, and a third association stage;

[0011] In the step of obtaining the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed, the correlation is as follows:

[0012] In the first association stage, it is determined that the current condensing pressure is greater than or equal to the first condensing pressure and less than or equal to the second condensing pressure, and the current condensing pressure is directly proportional to the rotational speed of the outdoor fan;

[0013] In the second association phase, if the current condensing pressure is determined to be greater than the second condensing pressure and less than or equal to the third condensing pressure, the outdoor fan will operate at the highest speed of the first association phase.

[0014] In the third association stage, if it is determined that the current condensing pressure is greater than the third condensing pressure, then the outdoor fan is controlled to operate at the highest operable speed, wherein the highest operable speed is greater than the highest speed in the first association stage.

[0015] According to an embodiment of the present invention, the step of adjusting the correlation based on the outdoor ambient temperature specifically includes:

[0016] Based on the range of outdoor ambient temperature, the magnitude of the preset parameters within the correlation is adjusted, wherein the preset parameters include at least one of the first condensing pressure, the second condensing pressure, the third condensing pressure, and the ratio between the rotational speed of the outdoor fan and the condensing pressure.

[0017] According to an embodiment of the present invention, the step of adjusting the value of the preset parameter within the correlation relationship based on the range of the outdoor ambient temperature specifically includes:

[0018] Based on the fact that the outdoor ambient temperature is within a first temperature range, the first condensation pressure is determined to be a first preset value;

[0019] Based on the fact that the outdoor ambient temperature is within the second temperature range, the first condensation pressure is determined to be the second preset value;

[0020] Based on the fact that the outdoor ambient temperature is in the third temperature range, the first condensation pressure is determined to be a third preset value;

[0021] Wherein, if the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range, then the first preset value is less than the second preset value, and the second preset value is less than the third preset value.

[0022] According to an embodiment of the present invention, the step of adjusting the value of the preset parameter within the correlation relationship based on the range of the outdoor ambient temperature specifically includes:

[0023] Based on the fact that the outdoor ambient temperature is within a first temperature range, the ratio between the rotational speed of the outdoor fan and the condensing pressure is determined to be a first ratio value;

[0024] Based on the fact that the outdoor ambient temperature is within the second temperature range, the ratio between the rotational speed of the outdoor fan and the condensing pressure is determined to be the second ratio value;

[0025] Based on the fact that the outdoor ambient temperature is in the third temperature range, the ratio between the speed of the outdoor fan and the condensing pressure is determined to be the third ratio value.

[0026] Wherein, if the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range, then the first ratio is less than the second ratio, and the second ratio is less than the third ratio.

[0027] According to an embodiment of the present invention, the step of adjusting the value of the preset parameter within the correlation relationship based on the range of the outdoor ambient temperature specifically includes:

[0028] Based on whether the outdoor ambient temperature falls within a first temperature range, a second temperature range, or a third temperature range, it is determined that the second condensing pressure is equal, and the third condensing pressure is also determined to be equal.

[0029] According to one embodiment of the present invention, prior to the step of adjusting the speed of the outdoor fan based on the current condensing pressure and the adjusted correlation, the method for controlling the outdoor fan of the air conditioner further includes:

[0030] The current load change stage of the compressor is obtained, wherein the load change stage includes a loading stage and a unloading stage;

[0031] Based on the current load change stage of the compressor, at least one of the first condensing pressure, the second condensing pressure, and the third condensing pressure is adjusted.

[0032] According to an embodiment of the present invention, the step of adjusting at least one of the first condensing pressure, the second condensing pressure, and the third condensing pressure based on the current load change stage of the compressor specifically includes:

[0033] Based on the compressor being in a load reduction phase, the first condensing pressure is adjusted to reduce the first hysteresis value from its original value, and the third condensing pressure is adjusted to reduce the second hysteresis value from its original value.

[0034] A control device for an outdoor air conditioner fan according to a second aspect embodiment of the present invention includes:

[0035] The first control module is used to obtain the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed;

[0036] The acquisition module is used to acquire the outdoor ambient temperature and the current condensing pressure of the compressor;

[0037] The second control module is used to adjust the correlation relationship according to the outdoor ambient temperature;

[0038] The third control module is used to adjust the speed of the outdoor fan according to the current condensing pressure and the adjusted correlation.

[0039] An air conditioner according to a third aspect embodiment of the present invention includes:

[0040] The controller is used to execute the control method for the outdoor fan of the air conditioner as described in the first aspect embodiment of the present invention;

[0041] The outdoor fan, outdoor temperature sensor, and condensation pressure sensor are respectively connected to the controller.

[0042] An electronic device according to a third aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method for an outdoor air conditioner fan as described in a first aspect of the present invention.

[0043] In summary, this invention proposes a control method for adjusting the speed of an outdoor fan using condensing pressure. This method takes into account the influence of outdoor ambient temperature on various preset parameters within the correlation relationship, thereby adaptively adjusting the correlation relationship under different outdoor ambient temperatures. This allows the adjusted correlation relationship to be adapted to the current outdoor environment of the outdoor fan, making the control of the outdoor fan speed based on the adjusted correlation relationship more precise.

[0044] This not only increases the diversity of scenarios that this control method can adapt to, enabling it to cover as many weather and climate environments as possible, but also makes the control methods more precise and targeted. In other words, this method can adaptively adjust the correlation relationship for different outdoor environments, so that the adjusted correlation relationship is more suitable for the current outdoor environment and ensures the matching degree between the outdoor fan speed and the condensing pressure. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is a flowchart illustrating the control method for the outdoor fan of an air conditioner provided by the present invention;

[0047] Figure 2 This is a schematic diagram of the control device for the outdoor fan of an air conditioner provided by the present invention;

[0048] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0050] The control method, control device, and air conditioner for the outdoor fan of an air conditioner proposed in this invention are described below with reference to the accompanying drawings. Before providing a detailed description of the embodiments of this invention, the overall application scenario is first described. The control method, control device, electronic device, and computer-readable storage medium for the outdoor fan of an air conditioner according to the embodiments of this invention can be applied to the air conditioner itself, to cloud platforms in the Internet field, or to other types of cloud platforms in the Internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0051] The following description uses only the control method applicable to the outdoor fan of an air conditioner as an example. It should be understood that the control method of this embodiment can also be applied to cloud platforms and third-party devices.

[0052] It should also be noted that the air conditioning control method proposed in this invention has universality, that is, this method is applicable to air conditioning for cooling or heating in both low-temperature and high-temperature environments.

[0053] like Figure 1 As shown, the control method for an outdoor air conditioner fan according to a first aspect embodiment of the present invention includes:

[0054] S100, obtain the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed;

[0055] S200, obtains the outdoor ambient temperature and the current condensing pressure of the compressor;

[0056] S300 adjusts the correlation based on the outdoor ambient temperature;

[0057] The S400 adjusts the speed of the outdoor fan based on the current condensing pressure and the adjusted correlation.

[0058] The specific working principle of the air conditioner outdoor fan control method according to an embodiment of the present invention is as follows: The outdoor fan of an air conditioner is usually located in the outdoor environment. The complex and ever-changing outdoor environment will affect the correlation between the compressor condensing pressure and the outdoor fan speed. For example, when the outdoor ambient temperature changes, if the outdoor fan speed is adjusted according to the original correlation, a mismatch between the condensing pressure and the outdoor fan speed will occur. Therefore, the present invention proposes an outdoor fan control method that takes into account the influence of the outdoor ambient temperature on each preset parameter in the correlation, thereby adaptively adjusting the correlation under different outdoor ambient temperatures. This allows the adjusted correlation to adapt to the current outdoor environment of the outdoor fan, making the control of the outdoor fan speed based on the adjusted correlation more precise.

[0059] This not only increases the diversity of scenarios that this control method can adapt to, enabling it to cover as many weather and climate environments as possible, but also makes the control methods more precise and targeted. In other words, this method can adaptively adjust the correlation relationship for different outdoor environments, so that the adjusted correlation relationship is more suitable for the current outdoor environment and ensures the matching degree between the outdoor fan speed and the condensing pressure.

[0060] Furthermore, the control method for the outdoor fan of an air conditioner according to an embodiment of the present invention has the following specific working process: First, the controller obtains the correlation between the condensing pressure of the compressor and the rotational speed of the outdoor fan. After determining that the above correlation has been obtained, the controller further obtains the current outdoor ambient temperature and the specific magnitude of the current condensing pressure of the compressor. Subsequently, in order to ensure the matching of the correlation with the current outdoor ambient temperature, the controller will further adaptively adjust the aforementioned obtained correlation according to the outdoor ambient temperature. Finally, after obtaining the adjusted correlation, the controller will determine the target rotational speed required by the outdoor fan based on the adjusted correlation and the current condensing pressure, and further adjust the rotational speed of the outdoor fan to the target rotational speed to complete the control of the outdoor fan rotational speed.

[0061] In addition, it should be noted that in related technologies, outdoor fans usually use PID control. PID control is executed by collecting outdoor temperature and coil pressure. However, PID control is generally based on a closed environment to achieve good results. However, outdoor fans are placed outdoors and are affected by weather and climate changes. The ambient temperature varies widely, which can lead to unstable control of the fan or frequent start-stop.

[0062] Therefore, the methods used in related technologies to control the speed of outdoor fans using coil pressure have drawbacks such as poor adaptability and unstable control. In order to solve the above-mentioned drawbacks in related technologies, the control method of the present invention proposes a control method that uses the condensing pressure of the compressor to control the speed of the outdoor fan. Furthermore, based on the description of the working principle and working process of the method of the present invention above, it can be seen that the method of the present invention takes into account the influence of outdoor ambient temperature on the control of outdoor fan speed, and adjusts the correlation between condensing pressure and outdoor fan speed by adjusting the outdoor ambient temperature, thereby improving the adaptability of the method and ensuring the stability of the control process.

[0063] In summary, the control method for the outdoor fan of an air conditioner according to the embodiments of the present invention adaptively adjusts the correlation relationship under different outdoor ambient temperatures, thereby making the adjusted correlation relationship more targeted and improving the control accuracy. On the one hand, it increases the diversity of scenarios that the control method can adapt to, enabling the method to cover all weather and climate environments as much as possible. On the other hand, it also makes the control means of the control method more precise and targeted.

[0064] According to some embodiments of the present invention, in S100, which obtains the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed, the controller can obtain the correlation in the following ways: for example, the system pre-stores a correlation between the condensing pressure and the outdoor fan's rotational speed, and the controller reads the pre-stored correlation to obtain the correlation; another example, the cloud server establishes a correlation between the compressor's condensing pressure and the outdoor fan's rotational speed for this air conditioner, and sends the correlation to the controller as a signal, and the controller receives the signal to obtain the correlation; yet another example, the controller establishes a correlation between the compressor's condensing pressure and the outdoor fan's rotational speed on its own to obtain the correlation.

[0065] Of course, the above embodiments are only some of the many embodiments of the present invention and do not constitute a specific limitation on the way of obtaining the association relationship in this aspect. The controller can also obtain the association relationship in other ways, and the present invention does not make any special limitations here.

[0066] According to some embodiments of the present invention, the association relationship includes a first association stage, a second association stage, and a third association stage.

[0067] In the step of obtaining the correlation between the compressor's condensing pressure and the outdoor fan's speed, the correlation obtained by the controller is as follows:

[0068] In the first correlation stage, that is, when the current condensing pressure is greater than or equal to the first condensing pressure and less than or equal to the second condensing pressure, the current condensing pressure is directly proportional to the speed of the outdoor fan.

[0069] In the second correlation stage, that is, when the current condensing pressure is greater than the second condensing pressure and less than or equal to the third condensing pressure, the outdoor fan operates at the highest speed of the first correlation stage.

[0070] In the third correlation stage, that is, when the current condensing pressure is greater than the third condensing pressure, the outdoor fan operates at the highest possible speed, which is greater than the highest speed in the first correlation stage.

[0071] As can be seen from the above correlation, as the condensing pressure increases, the speed control of the outdoor fan is divided into three correlation stages, namely the first correlation stage, the second correlation stage, and the third correlation stage. In each correlation stage, the adjustment method of the outdoor fan speed is different.

[0072] In the specific control process of this method: In the first correlation stage, the controller adjusts the speed of the outdoor fan according to the current condensing pressure to make the two directly proportional. When the current condensing pressure is the first condensing pressure, the outdoor fan operates at the lowest speed, and when the current condensing pressure is the second condensing pressure, the outdoor fan operates at the highest speed of the first correlation stage. In the second correlation stage, the controller controls the outdoor fan to operate continuously and stably at the highest speed of the first correlation stage. In the third correlation stage, the controller controls the speed of the outdoor fan to be further increased and operate at the highest permissible speed. It should be explained that the above-mentioned highest permissible speed refers to the highest speed that the outdoor fan can achieve under the current air conditioning structure and the current outdoor fan specifications.

[0073] According to some embodiments of the present invention, in S200, which acquires the outdoor ambient temperature and the current condensing pressure of the compressor, the controller can acquire the outdoor ambient temperature through an outdoor temperature sensor installed outdoors, or the controller can acquire the outdoor ambient temperature through other smart devices outdoors; in addition, the controller can acquire the current condensing pressure through a pressure sensor installed in the refrigerant pipeline. Of course, the present invention does not specifically limit the acquisition methods of the above two parameters.

[0074] According to some embodiments of the present invention, the step of adjusting the correlation based on the outdoor ambient temperature specifically includes:

[0075] Based on the range of outdoor ambient temperature, adjust the values ​​of preset parameters within the correlation relationship. The preset parameters include at least one of the first condensing pressure, the second condensing pressure, the third condensing pressure, and the ratio between the outdoor fan speed and the condensing pressure.

[0076] In this way, the preset parameters within the correlation are changed according to the different outdoor ambient temperatures to achieve adaptive adjustment of the correlation, so that the adjusted correlation can be adapted to the current outdoor environment, thereby ensuring the stability and accuracy of outdoor fan speed regulation.

[0077] In some embodiments of the present invention, the step of adjusting the value of a preset parameter within the correlation relationship according to the range of outdoor ambient temperature specifically includes:

[0078] Based on the outdoor ambient temperature being within the first temperature range, the first condensing pressure is determined to be the first preset value;

[0079] Based on the outdoor ambient temperature being within the second temperature range, the first condensing pressure is determined to be the second preset value;

[0080] Based on the outdoor ambient temperature being in the third temperature range, the first condensing pressure is determined to be the third preset value;

[0081] If the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range, then the first preset value is less than the second preset value, and the second preset value is less than the third preset value.

[0082] In this embodiment, it can be understood that the higher the outdoor ambient temperature, the lower the heat dissipation efficiency of the outdoor heat exchanger. Therefore, in order to ensure the heat dissipation efficiency of the outdoor heat exchanger, the outdoor fan needs to be turned on earlier to dissipate heat from the outdoor heat exchanger. Since the lower the first condensing pressure, the earlier the outdoor fan enters the first correlation stage (that is, the earlier the outdoor fan is turned on), when the outdoor ambient temperature is higher, the controller will reduce the original first condensing pressure by a certain value so that the outdoor fan can be turned on earlier to dissipate heat from the outdoor heat exchanger, thereby ensuring the heat dissipation efficiency of the outdoor heat exchanger, ensuring the stability of the air conditioner operation, and improving the heat exchange efficiency of the air conditioner.

[0083] For example, when the outdoor ambient temperature is greater than or equal to 23°C, the first condensing pressure is 20 bar (i.e., the first preset value); when the outdoor ambient temperature is less than 23°C but greater than -1°C, the first condensing pressure is 18 bar (i.e., the second preset value); when the outdoor ambient temperature is less than or equal to -1°C, the first condensing pressure is 16 bar (i.e., the third preset value).

[0084] Of course, the above embodiment is only one of the many embodiments of the present invention, and does not constitute a specific limitation on the first preset value, the second preset value and the third preset value in the present invention. The first preset value, the second preset value and the third preset value can be selected according to different actual needs.

[0085] In some embodiments of the present invention, the step of adjusting the value of a preset parameter within the correlation relationship according to the range of outdoor ambient temperature specifically includes:

[0086] Based on the outdoor ambient temperature being in the first temperature range, the ratio between the outdoor fan speed and the condensing pressure is determined to be the first ratio value.

[0087] Based on the fact that the outdoor ambient temperature is in the second temperature range, the ratio between the outdoor fan speed and the condensing pressure is determined to be the second ratio value.

[0088] Based on the fact that the outdoor ambient temperature is in the third temperature range, the ratio between the outdoor fan speed and the condensing pressure is determined to be the third ratio value.

[0089] If the first temperature range is greater than the second temperature range, and the second temperature range is greater than the third temperature range, then the first ratio is less than the second ratio, and the second ratio is less than the third ratio.

[0090] For example, when the outdoor ambient temperature is greater than or equal to 23℃, the ratio between the outdoor fan speed and the condensing pressure is the first ratio; when the outdoor ambient temperature is less than 23℃ but greater than -1℃, the ratio is the second ratio; and when the outdoor ambient temperature is less than or equal to -1℃, the ratio is the third ratio. The first ratio is less than the second ratio, and the second ratio is less than the third ratio.

[0091] In some embodiments of the present invention, the step of adjusting the value of a preset parameter within the correlation relationship according to the range of outdoor ambient temperature specifically includes:

[0092] Based on whether the outdoor ambient temperature falls within the first, second, or third temperature range, the second condensing pressure is determined to be equal, and the third condensing pressure is determined to be equal.

[0093] For example, regardless of the outdoor ambient temperature, the second condensing pressure is always 30 bar, and the third condensing pressure is always 40 bar.

[0094] Of course, the above embodiment is only one of the many embodiments of the present invention, and does not constitute a specific limitation on the second condensing pressure and the third condensing pressure in the present invention. The second condensing pressure and the third condensing pressure can be selected according to different actual needs.

[0095] According to some embodiments of the present invention, prior to the step of adjusting the speed of the outdoor fan based on the current condensing pressure and the adjusted correlation, the method for controlling the outdoor fan of the air conditioner further includes:

[0096] Obtain the current load change stage of the compressor, which includes the loading stage and the unloading stage;

[0097] Adjust at least one of the first condensing pressure, the second condensing pressure, and the third condensing pressure according to the current load change stage of the compressor.

[0098] Furthermore, the step of adjusting at least one of the first condensing pressure, the second condensing pressure, and the third condensing pressure according to the current load change stage of the compressor specifically includes:

[0099] Based on the compressor's current unloading phase, adjust the first condensing pressure to reduce the first hysteresis value from its original value, and adjust the third condensing pressure to reduce the second hysteresis value from its original value.

[0100] In the above embodiment, when the compressor is in the loading stage, the condensing pressure of the compressor will continuously increase as the compressor is continuously loaded. At this time, the controller will control the outdoor fan in sequence through the first association stage, the second association stage, and the third association stage. When the compressor is in the unloading stage, the condensing pressure of the compressor will continuously decrease as the compressor is continuously unloaded. At this time, the controller will control the outdoor fan in sequence through the third association stage, the second association stage, and the first association stage.

[0101] The principle behind setting the second backsliding value in this method is as follows:

[0102] Without setting a second differential value, when the compressor's condensing pressure exceeds the critical point between the second and third associated stages (i.e., the third condensing pressure), the air conditioner enters the third associated stage, and the outdoor fan speed increases to the maximum operating speed. However, if the compressor performs a load reduction process at this time, its condensing pressure will quickly drop below the third condensing pressure again. At this time, the air conditioner will switch back to the second associated stage in a very short time, and the outdoor fan speed needs to drop back from the maximum operating speed to the original speed. Therefore, the above control method has the problem of repeated operation of the fan in a short period of time, which can easily cause outdoor fan failure and shorten its service life.

[0103] With a second differential value set, when the compressor's condensing pressure exceeds the third condensing pressure before the unloading process is executed, the outdoor fan speed will not be adjusted immediately due to the existence of the second differential value. Instead, the outdoor fan will only return to its original speed (i.e., the speed of the second associated stage) after the compressor has unloaded the second differential value. In this way, the interval between the two actions of the outdoor fan is longer, which can avoid the problem of repeated operation of the fan in a short period of time, avoid the failure of the outdoor fan caused by frequent operation, and ensure its service life.

[0104] Furthermore, the principle and effect of setting the first backlash value in the control method of the present invention are similar to the principle and effect of setting the second backlash value, so the present invention will not repeat them here.

[0105] In some specific embodiments, the first latency value can be set to 3 bar and the second latency value can be set to 6 bar. Of course, the first latency value and the second latency value are not limited to these, and the present invention does not impose any special limitations on them.

[0106] The control device for the outdoor fan of an air conditioner provided by the present invention is described below. The control device for the outdoor fan of an air conditioner described below can be referred to in correspondence with the control method for the outdoor fan of an air conditioner described above.

[0107] like Figure 2 As shown, a control device for an outdoor air conditioner fan according to a second aspect embodiment of the present invention includes:

[0108] The first control module 110 is used to obtain the correlation between the condensing pressure of the compressor and the speed of the outdoor fan;

[0109] The acquisition module 120 is used to acquire the outdoor ambient temperature and the current condensing pressure of the compressor;

[0110] The second control module 130 is used to adjust the correlation based on the outdoor ambient temperature;

[0111] The third control module 140 is used to adjust the speed of the outdoor fan according to the current condensing pressure and the adjusted correlation.

[0112] An air conditioner according to a third aspect of the present invention includes a controller, an outdoor fan, an outdoor temperature sensor, and a condensing pressure sensor.

[0113] The controller is used to execute the control method for the outdoor fan of the air conditioner described in the first aspect of the present invention; the outdoor fan, the outdoor temperature sensor and the condensing pressure sensor are respectively connected to the controller.

[0114] According to the air conditioner outdoor fan control device and air conditioner of the present invention, a control method for adjusting the outdoor fan speed based on condensing pressure is adopted. The influence of outdoor ambient temperature on each preset parameter in the correlation is taken into account, so as to adaptively adjust the correlation under different outdoor ambient temperatures. This makes the adjusted correlation adaptable to the current outdoor environment of the outdoor fan, and makes the control of the outdoor fan speed based on the adjusted correlation more accurate.

[0115] Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3As shown, the electronic device may include a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logic instructions in the memory 830 to execute a control method for the outdoor fan of the air conditioner. This method includes: obtaining the correlation between the compressor's condensing pressure and the outdoor fan's rotational speed; obtaining the outdoor ambient temperature and the compressor's current condensing pressure; adjusting the correlation based on the outdoor ambient temperature; and adjusting the outdoor fan's rotational speed based on the current condensing pressure and the adjusted correlation.

[0116] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the 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 to cause a computer device (which may be a personal computer, server, or 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 capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0117] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute a control method for an outdoor air conditioner fan. The method includes: obtaining a correlation between the condensing pressure of the compressor and the rotational speed of the outdoor fan; obtaining the outdoor ambient temperature and the current condensing pressure of the compressor; adjusting the correlation based on the outdoor ambient temperature; and adjusting the rotational speed of the outdoor fan based on the current condensing pressure and the adjusted correlation.

[0118] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a control method for an outdoor fan of an air conditioner, the method comprising: obtaining a correlation between the condensing pressure of a compressor and the rotational speed of the outdoor fan; obtaining the outdoor ambient temperature and the current condensing pressure of the compressor; adjusting the correlation based on the outdoor ambient temperature; and adjusting the rotational speed of the outdoor fan based on the current condensing pressure and the adjusted correlation.

[0119] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0120] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, 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. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method of an outdoor fan of an air conditioner, characterized by, The method comprises the following steps: obtaining a correlation between the condensing pressure of the compressor and the rotating speed of the outdoor fan; obtaining the outdoor ambient temperature and the current condensing pressure of the compressor; adjusting the correlation according to the outdoor ambient temperature; adjusting the rotating speed of the outdoor fan according to the current condensing pressure and the adjusted correlation; the correlation comprises a first correlation stage, a second correlation stage and a third correlation stage; in the step of obtaining the correlation between the condensing pressure of the compressor and the rotating speed of the outdoor fan, the correlation is: in the first correlation stage, it is determined that the current condensing pressure is greater than or equal to a first condensing pressure and less than or equal to a second condensing pressure, and the current condensing pressure is in a positive proportional relationship with the rotating speed of the outdoor fan; in the second correlation stage, it is determined that the current condensing pressure is greater than the second condensing pressure and less than or equal to a third condensing pressure, and the outdoor fan works at the highest rotating speed in the first correlation stage; in the third correlation stage, it is determined that the current condensing pressure is greater than the third condensing pressure, and the outdoor fan is controlled to work at the highest allowable rotating speed, wherein the highest allowable rotating speed is greater than the highest rotating speed in the first correlation stage; the step of adjusting the correlation according to the outdoor ambient temperature specifically comprises: adjusting the size of a preset parameter in the correlation according to the interval range of the outdoor ambient temperature, wherein the preset parameter comprises a ratio between the rotating speed of the outdoor fan and the condensing pressure.

2. The control method of an outdoor fan of an air conditioner according to claim 1, characterized by, the step of adjusting the size of the preset parameter in the correlation according to the interval range of the outdoor ambient temperature specifically comprises: determining that the ratio between the rotating speed of the outdoor fan and the condensing pressure is a first ratio according to the outdoor ambient temperature being in a first temperature interval; determining that the ratio between the rotating speed of the outdoor fan and the condensing pressure is a second ratio according to the outdoor ambient temperature being in a second temperature interval; determining that the ratio between the rotating speed of the outdoor fan and the condensing pressure is a third ratio according to the outdoor ambient temperature being in a third temperature interval; wherein the first temperature interval is greater than the second temperature interval, the second temperature interval is greater than the third temperature interval, the first ratio is less than the second ratio, and the second ratio is less than the third ratio.

3. The control method of an outdoor fan of an air conditioner according to claim 1 or 2, characterized by, before the step of adjusting the rotating speed of the outdoor fan according to the current condensing pressure and the adjusted correlation, the method further comprises the following steps: obtaining a load change stage in which the compressor currently locates, wherein the load change stage comprises a loading stage and a load reduction stage; adjusting at least one of the first condensing pressure, the second condensing pressure and the third condensing pressure according to the load change stage in which the compressor currently locates.

4. The control method of the outdoor fan of the air conditioner according to claim 3, characterized by, the step of adjusting at least one of the first condensing pressure, the second condensing pressure and the third condensing pressure according to the load change stage in which the compressor currently locates specifically comprises: According to the compressor currently being in a load reduction phase, the first condensing pressure is adjusted to be reduced by a first back difference from an original size, and the third condensing pressure is adjusted to be reduced by a second back difference from an original size.

5. A control device for an outdoor fan of an air conditioner, characterized in that, The control method of the outdoor fan of the air conditioner according to any one of claims 1 to 4 is executed, comprising: a first control module configured to obtain a correlation between a condensing pressure of a compressor and a rotating speed of an outdoor fan; an obtaining module configured to obtain an outdoor ambient temperature and a current condensing pressure of the compressor; a second control module configured to adjust the correlation according to the outdoor ambient temperature; a third control module configured to adjust the rotating speed of the outdoor fan according to the current condensing pressure and the adjusted correlation.

6. An air conditioner characterized by comprising: comprising: a controller configured to execute the control method of the outdoor fan of the air conditioner according to any one of claims 1 to 4; an outdoor fan, an outdoor temperature sensor and a condensing pressure sensor, which are connected to the controller respectively.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the control method of the outdoor fan of the air conditioner according to any one of claims 1 to 4.

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