Control method of air conditioner external fan, air conditioner controller, air conditioner external unit and air conditioner

Abstract

The invention discloses a control method of an air conditioner external fan, an air conditioner controller, an air conditioner external unit and an air conditioner, and the control method of the air conditioner external fan comprises the steps that the current actual rotating speed and the current actual power of the air conditioner external fan are obtained; and under the condition that the current actual power is not within the preset power range, the fan rotating speed corresponding to the target air outlet volume is determined according to the current actual rotating speed and the current actual power, and an air conditioner outer fan is controlled according to the fan rotating speed corresponding to the target air outlet volume, the preset power range represents the power range corresponding to the current actual rotating speed under the target back pressure, and the target air outlet quantity represents the air outlet quantity corresponding to the current actual rotating speed under the target back pressure. According to the method, when the current actual power is not in the preset power range, the air conditioner external fan is controlled according to the fan rotating speed corresponding to the target air outlet volume, so that the air outlet volume of the air conditioner external unit is kept at the target air outlet volume, and the refrigerating and heating capacity of the air conditioner is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a control method for an air conditioner outdoor fan, an air conditioner controller, an air conditioner outdoor unit, and an air conditioner. Background Art

[0002] At present, the outdoor unit of the air conditioner is usually installed inside the air conditioner cover in high-rise residential areas. Due to space limitations, the air outlet resistance of the outdoor unit is much greater than the air outlet resistance of the external environment, resulting in a decrease in the heat exchange efficiency of the outdoor unit, thereby reducing the cooling and heating capabilities of the air conditioner. Summary of the Invention

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, a first object of the present invention is to provide a method for controlling an outdoor fan of an air conditioner, which determines whether the back pressure of the outdoor fan of the air conditioner is at a target back pressure based on the current actual power and a preset power range. If the current actual power is not within the preset power range, the outdoor fan of the air conditioner is controlled according to the fan speed corresponding to the target air output, so that the air output of the outdoor fan of the air conditioner is maintained at the target air output, thereby ensuring that the cooling and heating capabilities of the air conditioner are not affected.

[0004] A second object of the present invention is to provide a computer-readable storage medium.

[0005] A third objective of the present invention is to provide an air conditioning controller.

[0006] A fourth object of the present invention is to provide an air conditioner outdoor unit.

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

[0008] To achieve the above-mentioned purpose, a control method for the outdoor fan of an air conditioner is proposed according to an embodiment of the first aspect of the present invention, including: obtaining the current actual speed and current actual power of the outdoor fan of the air conditioner; when the current actual power is not within a preset power range, determining the fan speed corresponding to the target air output according to the current actual speed and the current actual power, and controlling the outdoor fan of the air conditioner according to the fan speed corresponding to the target air output, wherein the preset power range represents the power range corresponding to the current actual speed under the target back pressure, and the target air output represents the air output corresponding to the current actual speed under the target back pressure.

[0009] According to the control method of the outdoor fan of the air conditioner according to an embodiment of the present invention, the current actual speed and the current actual power of the outdoor fan of the air conditioner are obtained, and whether the back pressure of the outdoor fan of the air conditioner is the target back pressure is determined based on the current actual power and the preset power range. If the current actual power is not within the preset power range, it indicates that the back pressure of the outdoor fan of the air conditioner is not the target back pressure. Therefore, it is necessary to determine the fan speed corresponding to the target air volume based on the current actual speed and the current actual power, and control the outdoor fan of the air conditioner based on the fan speed corresponding to the target air volume, so that the air volume of the outdoor fan of the air conditioner is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0010] According to one embodiment of the present invention, after obtaining the current actual speed of the air conditioner outdoor fan, the method further includes: determining the power range and air output under the target back pressure according to the current actual speed, as the preset power range and target air output respectively.

[0011] According to one embodiment of the present invention, the fan speed corresponding to the target air output is determined based on the current actual speed and the current actual power, including: determining the current actual air output based on the current actual speed and the current actual power; determining the current actual back pressure based on the current actual speed and the current actual air output; and determining the fan speed corresponding to the target air output based on the current actual back pressure.

[0012] According to one embodiment of the present invention, the current actual air volume is determined based on the current actual speed and the current actual power, including: based on the current actual speed and the current actual power, querying the pre-configured relationship curve between power and air volume at each speed to obtain the current actual air volume.

[0013] According to one embodiment of the present invention, the current actual back pressure is determined based on the current actual speed and the current actual air volume, including: based on the current actual speed and the current actual air volume, querying the relationship curve between back pressure and air volume at each pre-configured speed to obtain the current actual back pressure.

[0014] According to an embodiment of the present invention, when the current actual power is within a preset power range, the method further includes: controlling the air conditioner outdoor fan to maintain the current actual speed.

[0015] According to one embodiment of the present invention, the target back pressure is 0-3Pa.

[0016] To achieve the above-mentioned purpose, according to the second aspect of the present invention, a computer-readable storage medium is proposed, on which a control program for an air conditioner outdoor fan is stored. When the program is executed by a processor, the control method for the air conditioner outdoor fan of any of the aforementioned embodiments is implemented.

[0017] According to the computer-readable storage medium of an embodiment of the present invention, by executing a computer program of the above-mentioned control method for the air-conditioning outdoor fan, it is determined whether the back pressure of the air-conditioning outdoor unit is the target back pressure based on the current actual power and the preset power range, and when the current actual power is not within the preset power range, the air-conditioning outdoor fan is controlled according to the fan speed corresponding to the target air volume, so that the air volume of the air-conditioning outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0018] To achieve the above-mentioned purpose, an air-conditioning controller is proposed according to an embodiment of the third aspect of the present invention, comprising: a memory, a processor, and a control program for an air-conditioning outdoor fan stored in the memory and runnable on the processor. When the processor executes the program, the control method for the air-conditioning outdoor fan of any of the aforementioned embodiments is implemented.

[0019] According to an embodiment of the present invention, the air-conditioning controller executes a computer program of the above-mentioned control method of the air-conditioning outdoor fan through a processor, determines whether the back pressure of the air-conditioning outdoor unit is the target back pressure based on the current actual power and the preset power range, and when the current actual power is not within the preset power range, controls the air-conditioning outdoor fan according to the fan speed corresponding to the target air volume, so that the air volume of the air-conditioning outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0020] To achieve the above-mentioned purpose, according to an embodiment of the fourth aspect of the present invention, an air-conditioning outdoor unit is proposed, comprising: an air-conditioning outdoor fan; a controller, configured to obtain the current actual speed and current actual power of the air-conditioning outdoor fan, and when the current actual power is not within a preset power range, determine the fan speed corresponding to the target air output according to the current actual speed and the current actual power, and control the air-conditioning outdoor fan according to the fan speed corresponding to the target air output, wherein the preset power range represents the power range corresponding to the current actual speed under the target back pressure, and the target air output represents the air output corresponding to the current actual speed under the target back pressure.

[0021] According to the air conditioner outdoor unit of an embodiment of the present invention, the controller obtains the current actual speed and the current actual power of the air conditioner outdoor fan. If the current actual power is not within the preset power range, it indicates that the air outlet resistance of the air conditioner outdoor unit is not the target back pressure. Therefore, it is necessary to determine the fan speed corresponding to the target air outlet volume based on the current actual speed and the current actual power, and control the air conditioner outdoor fan according to the fan speed corresponding to the target air outlet volume, so that the air outlet volume of the air conditioner outdoor unit is maintained at the target air outlet volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0022] To achieve the above-mentioned object, an air conditioner is provided according to a fifth embodiment of the present invention, comprising the aforementioned air conditioner outdoor unit.

[0023] According to an embodiment of the present invention, the air conditioner adopts the above-mentioned air conditioner outdoor unit, and determines whether the back pressure of the air conditioner outdoor unit is the target back pressure based on the current actual power and the preset power range. When the current actual power is not within the preset power range, the air conditioner outdoor fan is controlled according to the fan speed corresponding to the target air volume, so that the air volume of the air conditioner outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front view of an outdoor unit of an air conditioner according to one embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of an outdoor unit of an air conditioner according to one embodiment of the present invention;

[0027] Figure 3 is a flow chart of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention;

[0028] Figure 4 is a graph showing the relationship between back pressure and air volume at various speeds according to an embodiment of the present invention;

[0029] Figure 5 is a graph showing the relationship between power and air volume at various speeds according to an embodiment of the present invention;

[0030] Figure 6 is a flow chart of a method for controlling an outdoor fan of an air conditioner according to a specific embodiment of the present invention;

[0031] Figure 7 is a system schematic diagram of an air conditioning controller according to an embodiment of the present invention;

[0032] Figure 8 FIG. 1 is a system diagram of an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] The following describes a method for controlling an outdoor fan of an air conditioner, an air conditioner controller, an outdoor unit of an air conditioner, an air conditioner, and a storage medium according to embodiments of the present invention with reference to the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, the air conditioner outdoor unit includes a front panel 10 , a top cover 20 , an air outlet mesh cover 30 , axial flow fan blades 40 , an air conditioner outdoor fan 50 , an air guide ring 60 and a motor bracket 70 .

[0036] The front panel 10 and top cover 20 form a housing chamber, within which the axial fan blades 40, the air conditioner's external fan 50, the air guide ring 60, and the motor bracket 70 are located. The air outlet grille 30 is mounted on the front panel 10 and corresponds to the axial fan blades 40. The air conditioner's external fan 50 is mounted on the motor bracket 70 and is used to drive the axial fan blades 40. The air guide ring 60 is mounted on the front panel 10, and the axial fan blades 40 exhaust air from the air outlet grille 30 through the air guide ring 60.

[0037] Since the air conditioner outdoor unit is usually installed inside the air conditioner cover, when the air outlet mesh cover 30 discharges gas, the air conditioner cover will hinder the discharge of gas, increasing the air outlet resistance of the air conditioner outdoor unit, that is, increasing the back pressure of the air conditioner outdoor unit. As the back pressure of the air conditioner outdoor unit gradually increases, the air outlet volume of the air conditioner outdoor unit will gradually decrease.

[0038] Figure 3 FIG. 1 is a flow chart of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. Figure 3 As shown, the control method of the air conditioner outdoor fan includes the following steps:

[0039] S101: Obtain the current actual speed and current actual power of the air conditioner outdoor fan.

[0040] Specifically, the air conditioner's outdoor fan drives the axial fan blades. Therefore, the speed of the axial fan blades can be determined by the air conditioner's outdoor fan speed. The current actual power is the real-time power corresponding to the current actual speed. The current actual power will vary depending on the air conditioner's installation environment and the back pressure of the outdoor unit.

[0041] S102, when the current actual power is not within the preset power range, determine the fan speed corresponding to the target air output according to the current actual speed and the current actual power, and control the air conditioner outdoor fan according to the fan speed corresponding to the target air output, wherein the preset power range represents the power range corresponding to the current actual speed under the target back pressure, and the target air output represents the air output corresponding to the current actual speed under the target back pressure.

[0042] Specifically, because the current actual speed of the air conditioner outdoor unit in different environments corresponds to different current actual power, it is possible to determine whether the back pressure of the air conditioner outdoor unit is the target back pressure based on the current actual power and the preset power range. If the current actual power is not within the preset power range, it indicates that the back pressure of the air conditioner outdoor unit is not the target back pressure. Figure 4As shown in the figure, when the fan speed remains constant, the greater the back pressure on the outdoor unit, the smaller the air volume. Taking a fan speed of 850 rpm as an example, when the back pressure is between 0 and 15 Pa, the air volume and back pressure are linearly related. When the back pressure is between 15 and 20 Pa, the air volume decreases significantly, indicating that the 15-20 Pa range is the stall zone of the outdoor unit. During a stall, the air flow in the outdoor unit is unstable, and the outdoor fan experiences significant vibration and noise, significantly affecting the strength and lifespan of the outdoor fan. Therefore, it is critical to keep the outdoor fan operating away from the stall zone. Therefore, it is necessary to determine the fan speed corresponding to the target air volume based on the current actual speed and power. The outdoor fan should be controlled based on the fan speed corresponding to the target air volume to maintain the air volume at the target air volume, thereby keeping the outdoor fan away from the stall zone.

[0043] Furthermore, in some embodiments, the target back pressure is 0-3 Pa.

[0044] It can be understood that under ideal conditions, the back pressure of the air conditioner outdoor unit is 0-3Pa. At this time, there is no resistance at the air outlet of the air conditioner outdoor unit in the current environment, or the resistance is very small and can be ignored. At this time, the air outlet of the air conditioner outdoor unit under the target back pressure is the air outlet of the air conditioner outdoor unit during normal operation. The air conditioner outdoor fan will not operate in the stall zone, and will not affect the heat exchange efficiency of the air conditioner outdoor unit. Therefore, the air outlet corresponding to the current actual speed under the target back pressure is used as the target air outlet. If the air outlet of the air conditioner outdoor unit can be maintained at the target air outlet, it will not affect the cooling and heating capacity of the air conditioner.

[0045] In the above embodiment, whether the back pressure of the air-conditioning outdoor unit is the target back pressure is determined based on the current actual power and the preset power range, and when the current actual power is not in the preset power range, the air-conditioning outdoor fan is controlled according to the fan speed corresponding to the target air output, so that the air output of the air-conditioning outdoor unit is maintained at the target air output, thereby keeping the air-conditioning outdoor unit away from the stall zone and not affecting the heat exchange efficiency of the air-conditioning outdoor unit, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0046] In some embodiments, after obtaining the current actual speed of the air conditioner outdoor fan, the method further includes: determining the power range and air volume under the target back pressure according to the current actual speed, as the preset power range and target air volume respectively.

[0047] Specifically, if Figure 4 and Figure 5 As shown, Figure 4 It is the relationship curve between back pressure and air volume at each pre-configured speed. Figure 5 It is the relationship curve between power and air volume at various pre-configured speeds. Figure 4 The curve shown can be used to find the air volume under the target back pressure and speed. Figure 5 In the curve shown, the power under the target back pressure can be found according to the target air volume and speed, and a certain margin is reserved for the power to obtain the preset power range.

[0048] For example, if the target back pressure is 0Pa, and the current actual speed is 850rpm, Figure 4 From the curve shown, we can find the target air volume is 2360, and then according to the target air volume of 2360 and the current actual speed of 850rpm, Figure 5 The power can be found to be 59.5W in the curve shown, and the preset power range can be 58-61W.

[0049] In some embodiments, the fan speed corresponding to the target air output is determined based on the current actual speed and the current actual power, including: determining the current actual air output based on the current actual speed and the current actual power; determining the current actual back pressure based on the current actual speed and the current actual air output; and determining the fan speed corresponding to the target air output based on the current actual back pressure.

[0050] Specifically, since the current actual power of the air conditioner's outdoor fan is not within the preset power range, the current actual air volume is different from the target air volume. Since the actual air volume of the air conditioner's outdoor fan is related to the back pressure, it is necessary to first determine the current actual air volume based on the current actual speed and the current actual power, and then determine the current actual back pressure based on the actual air volume and the current actual speed. Figure 4 It can be seen from the figure that if the current actual back pressure is different from the target back pressure, the corresponding fan speed needs to be determined according to the target air volume and the current actual back pressure so that the air volume of the air conditioner outdoor unit remains at the target air volume.

[0051] In an optional embodiment, the fan speed corresponding to the target air output is determined based on the current actual back pressure, including: based on the current actual back pressure and the target air output, querying the relationship curve between back pressure and air output at each pre-configured speed to obtain the fan speed corresponding to the target air output.

[0052] For example, if the actual back pressure is 6Pa and the target air volume is 2360, Figure 4 The curve in Figure 1 shows that the fan speed corresponding to the target air volume is 900 rpm. The air conditioner's outdoor fan is then controlled based on the target air volume, maintaining the air volume at 2360 rpm.

[0053] In some embodiments, the current actual air volume is determined based on the current actual speed and the current actual power, including: based on the current actual speed and the current actual power, querying the pre-configured relationship curve between power and air volume at each speed to obtain the current actual air volume.

[0054] Specifically, according to Figure 5 The relationship curve between power and air volume at each pre-configured speed is shown, and the current actual air volume corresponding to the current actual speed and the current actual power is found.

[0055] For example, if the current actual speed is 850rpm and the current actual power is 61.5W, Figure 5 From the curve shown, it can be found that the air volume is 2210, so the current actual air volume is 2210.

[0056] In some embodiments, the current actual back pressure is determined based on the current actual speed and the current actual air volume, including: based on the current actual speed and the current actual air volume, querying the relationship curve between back pressure and air volume at each pre-configured speed to obtain the current actual back pressure.

[0057] Specifically, according to Figure 4 The relationship curve between back pressure and air volume at each pre-configured speed is shown, and the current actual air volume corresponding to the current actual speed and the current actual air volume is found.

[0058] For example, if the current actual speed is 850rpm and the current actual air volume is 2210, Figure 4 From the curve in , we can find that the current actual back pressure is 6Pa.

[0059] In some embodiments, when the current actual power is within a preset power range, the method further includes: controlling the air conditioner outdoor fan to maintain the current actual speed.

[0060] That is to say, if the current actual power is within the preset power range, the current actual back pressure of the air conditioner outdoor unit is the target back pressure, so the environment in which the air conditioner outdoor unit is located is the environment corresponding to the target back pressure. Therefore, there is no need to adjust the current actual speed of the air conditioner outdoor fan, and the air conditioner outdoor fan can be directly controlled to maintain the current actual speed.

[0061] The technical solution of this application is further described in detail below in conjunction with specific implementation methods:

[0062] like Figure 6 As shown, the control method of the air conditioner outdoor fan includes the following steps:

[0063] S201, obtaining the current actual speed of the air conditioner outdoor fan.

[0064] S202: Obtain a preset power range and target air volume corresponding to the current actual speed under a back pressure of 0 Pa, and obtain the current actual power of the air conditioner outdoor fan.

[0065] S203, determine whether the current actual power is within the preset power range. If the current actual power is within the preset power range, execute step S204; if the current actual power is not within the preset power range, execute step S205.

[0066] S204: Control the air conditioner outdoor fan to maintain the current actual speed.

[0067] S205 , determining the current actual air volume according to the current actual rotation speed and the current actual power, and then determining the current actual back pressure according to the current actual rotation speed and the current actual air volume.

[0068] S206, determining the fan speed corresponding to the target air volume according to the current actual back pressure and the target air volume, and controlling the air conditioner outdoor fan according to the fan speed corresponding to the target air volume, so that the air volume of the air conditioner outdoor unit is maintained at the target air volume.

[0069] In the above embodiment, whether the back pressure of the air-conditioning outdoor unit is 0Pa is judged according to the current actual power and the preset power range, thereby realizing the judgment whether there is air outlet resistance of the air-conditioning outdoor fan, and when the current actual power is not in the preset power range, the air-conditioning outdoor fan is controlled according to the fan speed corresponding to the target air outlet volume, so that the air outlet volume of the air-conditioning outdoor unit is maintained at the target air outlet volume, thereby keeping the air-conditioning outdoor unit away from the stall zone, and not affecting the heat exchange efficiency of the air-conditioning outdoor unit, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0070] To sum up, according to the control method of the outdoor fan of the air conditioner in an embodiment of the present invention, the current actual speed and the current actual power of the outdoor fan of the air conditioner are obtained, and whether the back pressure of the outdoor fan of the air conditioner is the target back pressure is judged according to the current actual power and the preset power range. If the current actual power is not in the preset power range, it indicates that the back pressure of the outdoor fan of the air conditioner is not the target back pressure. Therefore, it is necessary to determine the fan speed corresponding to the target air volume according to the current actual speed and the current actual power, and control the outdoor fan of the air conditioner according to the fan speed corresponding to the target air volume, so that the air volume of the outdoor fan of the air conditioner is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0071] Corresponding to the above embodiments, an embodiment of the present invention further provides a computer-readable storage medium on which a control program for an air conditioner outdoor fan is stored. When the program is executed by a processor, the control method for the air conditioner outdoor fan of any of the above embodiments is implemented.

[0072] According to the computer-readable storage medium of an embodiment of the present invention, by executing a computer program of the above-mentioned control method for the air-conditioning outdoor fan, it is determined whether the back pressure of the air-conditioning outdoor unit is the target back pressure based on the current actual power and the preset power range, and when the current actual power is not within the preset power range, the air-conditioning outdoor fan is controlled according to the fan speed corresponding to the target air volume, so that the air volume of the air-conditioning outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0073] Corresponding to the above embodiment, the embodiment of the present invention further provides an air conditioning controller. Figure 7 As shown, the air conditioning controller 100 includes: a memory 110, a processor 120, and a control program for the air conditioning outdoor fan stored in the memory 110 and runnable on the processor 120. When the processor 120 executes the program, the control method for the air conditioning outdoor fan of any of the aforementioned embodiments is implemented.

[0074] According to an embodiment of the present invention, the air-conditioning controller executes a computer program of the above-mentioned control method of the air-conditioning outdoor fan through a processor, determines whether the back pressure of the air-conditioning outdoor unit is the target back pressure based on the current actual power and the preset power range, and when the current actual power is not within the preset power range, controls the air-conditioning outdoor fan according to the fan speed corresponding to the target air volume, so that the air volume of the air-conditioning outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0075] Corresponding to the above embodiment, the embodiment of the present invention further provides an air conditioner outdoor unit. Figure 1 and Figure 2 As shown, the air conditioner outdoor unit includes: an air conditioner outdoor fan 50 and a controller (not shown).

[0076] In which, the controller is configured to obtain the current actual speed and current actual power of the air-conditioning outdoor fan 50, and when the current actual power is not within the preset power range, determine the fan speed corresponding to the target air output according to the current actual speed and the current actual power, and control the air-conditioning outdoor fan 50 according to the fan speed corresponding to the target air output, wherein the preset power range represents the power range corresponding to the current actual speed under the target back pressure, and the target air output represents the air output corresponding to the current actual speed under the target back pressure.

[0077] In some embodiments, the controller is further configured to: after obtaining the current actual speed of the air-conditioning outdoor fan 50, determine the power range and air output under the target back pressure according to the current actual speed, as the preset power range and target air output respectively.

[0078] In some embodiments, the controller is further configured to: determine the current actual air output based on the current actual speed and the current actual power; determine the current actual back pressure based on the current actual speed and the current actual air output; and determine the fan speed corresponding to the target air output based on the current actual back pressure.

[0079] In some embodiments, the controller is further configured to obtain the current actual air volume by querying a pre-configured relationship curve between power and air volume at each speed based on the current actual speed and the current actual power.

[0080] In some embodiments, the controller is further configured to obtain the current actual back pressure by querying a pre-configured relationship curve between back pressure and air volume at each speed based on the current actual speed and the current actual air volume.

[0081] In some embodiments, the controller is further configured to: when the current actual power is within a preset power range, control the air-conditioning outdoor fan 50 to maintain the current actual speed.

[0082] In some embodiments, the target back pressure is 0-3 Pa.

[0083] It should be noted that the specific implementation of the air conditioner outdoor unit in the embodiment of the present invention corresponds one-to-one to the specific implementation of the control method of the air conditioner outdoor fan in the aforementioned embodiment of the present invention, and will not be repeated here.

[0084] According to the air conditioner outdoor unit of an embodiment of the present invention, the controller obtains the current actual speed and the current actual power of the air conditioner outdoor fan. If the current actual power is not within the preset power range, it indicates that the air outlet resistance of the air conditioner outdoor unit is not the target back pressure. Therefore, it is necessary to determine the fan speed corresponding to the target air outlet volume based on the current actual speed and the current actual power, and control the air conditioner outdoor fan according to the fan speed corresponding to the target air outlet volume, so that the air outlet volume of the air conditioner outdoor unit is maintained at the target air outlet volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0085] To achieve the above-mentioned purpose, an air conditioner is provided according to a fifth embodiment of the present invention. Figure 8 As shown, the air conditioner 300 includes the aforementioned air conditioner outdoor unit 200 .

[0086] According to an embodiment of the present invention, the air conditioner adopts the above-mentioned air conditioner outdoor unit, and determines whether the back pressure of the air conditioner outdoor unit is the target back pressure based on the current actual power and the preset power range. When the current actual power is not within the preset power range, the air conditioner outdoor fan is controlled according to the fan speed corresponding to the target air volume, so that the air volume of the air conditioner outdoor unit is maintained at the target air volume, thereby ensuring that the cooling and heating capacity of the air conditioner is not affected.

[0087] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0088] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0089] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0090] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0091] In addition, the terms "first" and "second" used in the embodiments of the present invention are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in this embodiment. Therefore, the features defined by the terms "first" and "second" in the embodiments of the present invention can explicitly or implicitly indicate that the embodiment includes at least one of such features. In the description of the present invention, the word "plurality" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0092] In the present invention, unless otherwise clearly specified or limited in the embodiments, the terms "installed," "connected," "connect," and "fixed" appearing in the embodiments should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection. It can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements, or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on the specific implementation.

[0093] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0094] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for controlling an outdoor fan of an air conditioner, characterized in that: include: Obtaining the current actual speed and current actual power of the air conditioner outdoor fan; When the current actual power is not within the preset power range, the fan speed corresponding to the target air volume is determined according to the current actual speed and the current actual power, and the air-conditioning outdoor fan is controlled according to the fan speed corresponding to the target air volume, wherein the preset power range represents the power range corresponding to the current actual speed under the target back pressure, and the target air volume represents the air volume corresponding to the current actual speed under the target back pressure.

2. The method according to claim 1, characterized in that After obtaining the current actual rotation speed of the air conditioner outdoor fan, the method further includes: The power range and air volume under the target back pressure are determined according to the current actual rotation speed to serve as the preset power range and the target air volume respectively.

3. The method according to claim 2, characterized in that Determining the fan speed corresponding to the target air volume according to the current actual speed and the current actual power includes: Determine the current actual air volume according to the current actual speed and the current actual power; Determine the current actual back pressure according to the current actual rotation speed and the current actual air output; The fan speed corresponding to the target air output is determined according to the current actual back pressure.

4. The method according to claim 3, characterized in that Determining the current actual air volume according to the current actual rotation speed and the current actual power includes: According to the current actual rotation speed and the current actual power, the current actual air volume is obtained by querying the relationship curve between power and air volume at each pre-configured rotation speed.

5. The method according to claim 3, characterized in that: Determining the current actual back pressure according to the current actual rotation speed and the current actual air volume includes: According to the current actual rotation speed and the current actual air volume, the current actual back pressure is obtained by querying the relationship curve between the back pressure and the air volume at each pre-configured rotation speed.

6. The method according to any one of claims 1 to 5, characterized in that When the current actual power is within a preset power range, the method further includes: The air conditioner outdoor fan is controlled to maintain running at the current actual speed.

7. The method according to any one of claims 1 to 5, characterized in that The target back pressure is 0-3Pa.

8. A computer-readable storage medium, characterized in that: A control program for an air conditioner outdoor fan is stored thereon, and when the program is executed by a processor, a control method for an air conditioner outdoor fan according to any one of claims 1-7 is implemented.

9. An air conditioning controller, characterized in that: include: A memory, a processor, and a control program for an air-conditioning outdoor fan stored in the memory and executable on the processor, wherein when the processor executes the program, a control method for an air-conditioning outdoor fan according to any one of claims 1 to 7 is implemented.

10. An air conditioner outdoor unit, characterized in that: include: Air conditioner outdoor fan; The controller is configured to obtain a current actual speed and a current actual power of the air-conditioning outdoor fan, and when the current actual power is not within a preset power range, determine the fan speed corresponding to a target air volume according to the current actual speed and the current actual power, and control the air-conditioning outdoor fan according to the fan speed corresponding to the target air volume, wherein the preset power range represents the power range corresponding to the current actual speed under a target back pressure, and the target air volume represents the air volume corresponding to the current actual speed under the target back pressure.

11. An air conditioner, characterized in that: It comprises the air conditioner outdoor unit according to claim 10.

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