Air conditioner outer fan control method and device, electronic equipment and air conditioner

Abstract

The invention provides an air conditioner external fan control method and device, electronic equipment and an air conditioner. The method comprises the steps that after the air conditioner is started, the outer ring temperature and exhaust pressure of the air conditioner are obtained; the initial rotating speed gear of the outer fan is determined according to the outer ring temperature and the exhaust pressure; after the outer fan is controlled to run for a preset time period according to the initial rotating speed gear, the supercooling degree is obtained; the initial rotating speed gear is corrected according to the supercooling degree and the updated exhaust pressure; and the outer fan is controlled to operate according to the corrected rotating speed gear. After the outer fan is controlled to run for the preset time period according to the initial rotating speed gear, the supercooling degree is obtained. And the initial rotating speed gear is corrected according to the supercooling degree, and the corrected rotating speed gear is obtained. And the outer fan is controlled to operate according to the corrected rotating speed gear. The initial rotating speed gear is corrected through the degree of supercooling, matching of the rotating speed of the draught fan and the refrigerating effect of the condenser is facilitated, and energy waste caused by mismatching of the rotating speed of the draught fan and the refrigerating effect of condensate gas is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and more specifically to a method and device for controlling an external fan of an air conditioner, an electronic device and an air conditioner. Background Art

[0002] In the control of the air conditioner of new energy buses, the speed adjustment direction of the external fan is determined by the ambient temperature. This method is relatively simple. Controlling the speed of the external fan only based on the external ambient temperature factor will cause unreasonable energy consumption. For example, in the cooling mode, if the external temperature is relatively low, the speed of the external fan is adjusted to a low speed. However, if the degree of supercooling is relatively large, the cooling speed of the refrigerant is theoretically relatively high. If the speed of the external fan is operated at a low speed, the cooling efficiency brought by the high cooling speed of the refrigerant will theoretically be reduced, resulting in a waste of energy. Summary of the invention

[0003] The purpose of the present application is to provide an air-conditioning external fan control method, device, electronic equipment and air-conditioning, aiming to solve the problem of energy waste in the related art, in which the external fan speed does not match the refrigerant cooling state because the external fan speed is determined only according to the external ring temperature.

[0004] A first aspect of an embodiment of the present application provides a method for controlling an outdoor fan of an air conditioner, comprising:

[0005] After the air conditioner is turned on, obtain the outer ring temperature and exhaust pressure of the air conditioner;

[0006] Determining an initial speed gear of the external fan according to the external ring temperature and the exhaust pressure;

[0007] After controlling the external fan to operate according to the initial speed gear for a predetermined period of time, obtaining the degree of supercooling;

[0008] Correcting the initial speed gear position according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position;

[0009] The external fan is controlled to operate according to the corrected speed gear.

[0010] A second aspect of the embodiment of the present application provides an air conditioner outdoor fan control device, comprising:

[0011] The first acquisition module is used to obtain the outer ring temperature and exhaust pressure of the air conditioner after the air conditioner is turned on;

[0012] A first determination module, used to determine an initial speed gear of the external fan according to the external ring temperature and the exhaust pressure;

[0013] A second acquisition module is used to control the external fan to operate according to the initial speed gear for a predetermined period of time to obtain the supercooling degree;

[0014] A correction module, used for correcting the initial speed gear position according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position;

[0015] A control module is used to control the external fan to operate according to the corrected speed gear.

[0016] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements an air conditioner outdoor fan control method as described above when executing the computer program.

[0017] In a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned air conditioner outdoor fan control method are implemented.

[0018] According to a fourth aspect of the embodiments of the present application, an air conditioner is provided, wherein the air conditioner adopts any of the methods described above to control the operation of an outdoor fan of the air conditioner; or the air conditioner has an electronic device as described above.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0020] The above-mentioned technical solution of the present application controls the external fan to operate according to the initial speed gear for a predetermined period of time, and obtains the degree of supercooling. The above-mentioned initial speed gear is corrected according to the above-mentioned supercooling and the updated exhaust pressure to obtain the corrected speed gear. The above-mentioned external fan is controlled to operate according to the above-mentioned corrected speed gear. Correcting the initial speed gear by the supercooling and the updated exhaust pressure is conducive to matching the fan speed with the condenser cooling effect, and avoids energy waste caused by the mismatch between the fan speed and the condensing gas cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A flow chart of a method for controlling an outdoor fan of an air conditioner provided in one embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of an air-conditioning external fan control device provided in one embodiment of the present application;

[0023] Figure 3 is a schematic diagram of an electronic device provided by an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of an air conditioner provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0027] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0028] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0029] Figure 1 A flow chart of an air conditioner outdoor fan control method provided by an embodiment of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0030] A method for controlling an outdoor fan of an air conditioner, comprising:

[0031] In step S102, after the air conditioner is turned on, the outer ring temperature and exhaust pressure of the air conditioner are obtained.

[0032] When the bus air conditioner is powered on and checked in cooling mode, collect the outer ring temperature Tout and exhaust pressure pd. The outer ring temperature is the temperature of the external environment. The temperature of the external environment can be detected by setting a temperature sensor. Set a pressure sensor to detect the exhaust pressure. The exhaust pressure is the pressure of the refrigerant gas in the exhaust pipe at the compressor outlet.

[0033] In step S104, the initial speed gear of the external fan is determined according to the above-mentioned external ring temperature and exhaust pressure.

[0034] In this embodiment, a predetermined time period may be set, for example, time period t1 is an initial operation time period.

[0035] A distribution table of initial speed gears may be pre-set, and the initial speed gear of the external fan may be determined by searching the distribution table of initial speed gears according to the above outer ring temperature and exhaust pressure.

[0036] In step S106, the degree of supercooling is obtained after the external fan is controlled to operate according to the above initial speed level for a predetermined period of time.

[0037] In this embodiment, the supercooling degree (SC) is the difference between the saturation temperature corresponding to the exhaust pressure and the outdoor heat exchanger outlet temperature. The saturation temperature corresponding to the exhaust pressure and the outdoor heat exchanger outlet temperature are detected by a temperature sensor to obtain the saturation temperature corresponding to the exhaust pressure and the outdoor heat exchanger outlet temperature.

[0038] In step S108, the initial speed gear position is corrected according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position.

[0039] In this embodiment, the speed gear can be corrected periodically. At the beginning of each cycle, the updated exhaust pressure is obtained, and the corrected speed gear is determined using the updated exhaust pressure value and the above-mentioned supercooling. After the cycle ends, the next cycle of correction is entered.

[0040] In this embodiment, the initial speed gear is corrected according to the above-mentioned supercooling degree and the updated exhaust pressure, so that the running speed of the initial speed gear can be more matched with the state of the condensing agent in the condenser. For example, if the refrigeration effect of the condensing agent in the condenser is very good and the supercooling degree is relatively large, in this state, increasing the speed gear of the external fan and increasing the speed can achieve the effect of matching with the condenser. If the refrigeration effect of the condensing agent in the condenser is relatively poor and the supercooling degree is relatively small, in this state, reducing the speed gear of the external fan and reducing the speed can achieve the effect of matching with the condenser.

[0041] In step S110, the external fan is controlled to operate according to the corrected speed gear.

[0042] In this embodiment, the external fan is controlled to run at the speed according to the modified gear until the refrigeration is turned off. Alternatively, after running for a predetermined period of time, a new round of correction can be performed. After multiple rounds of correction, a speed gear matching the refrigeration can be obtained, which is conducive to reducing energy consumption.

[0043] The above-mentioned technical solution of the present application controls the external fan to operate according to the initial speed gear for a predetermined period of time, and then obtains the degree of supercooling. The above-mentioned initial speed gear is corrected according to the above-mentioned supercooling and the updated exhaust pressure to obtain the corrected speed gear. The above-mentioned external fan is controlled to operate according to the above-mentioned corrected speed gear. Correcting the initial speed gear by the degree of supercooling is conducive to matching the fan speed with the refrigeration effect of the condenser, and avoiding energy waste caused by the mismatch between the fan speed and the refrigeration effect of the condensing gas.

[0044] In one embodiment, in step S104, determining the initial speed gear of the external fan according to the external ring temperature and the exhaust pressure may further include the following steps:

[0045] According to the outer ring temperature and exhaust pressure, a preset initial state gear distribution table is searched to determine the outer ring temperature interval and exhaust pressure interval in the initial state gear distribution table corresponding to the outer ring temperature and exhaust pressure respectively. According to the outer ring temperature interval and exhaust pressure interval, the corresponding initial speed gear in the initial state gear distribution table is determined.

[0046] The above-mentioned initial state gear distribution table includes multiple above-mentioned outer ring temperature intervals and multiple above-mentioned exhaust pressure intervals, and each combination of the above-mentioned outer ring temperature intervals and the above-mentioned exhaust pressure intervals uniquely corresponds to one above-mentioned initial operation gear.

[0047] In this embodiment, in the above gear distribution table, there are multiple outer ring temperature intervals in the first direction, and multiple exhaust pressure intervals in the second direction. Each speed gear corresponds to an exhaust pressure interval and an outer ring temperature interval.

[0048] First, it can be determined that the detected outer ring temperature belongs to the target outer ring temperature interval in the above-mentioned initial state gear distribution table. Then it can be determined that the detected exhaust pressure belongs to the target exhaust pressure interval in the above-mentioned initial state gear distribution table. After determining the outer ring temperature interval and exhaust pressure interval in the initial state gear distribution table, the corresponding initial speed gear can be determined.

[0049] In this embodiment, refer to an initial state gear distribution table shown in Table 1.

[0050]

[0051] In Table 1, there are 16 speed gears, n1-n16. Each speed gear corresponds to an outer ring temperature range and an exhaust pressure range. For example, the speed of the gear corresponding to the exhaust pressure range E and the outer ring temperature range A is n1.

[0052] In some embodiments, a set of multiple outer ring temperature intervals constitutes the total range of values ​​of the outer ring temperature.

[0053] In this embodiment, the total range of the outer ring temperature distribution can be, for example, a closed interval of 15 to 50° C. The total range of the outer ring temperature distribution can be divided into four sub-intervals, for example, A has a range of 15-24° C., B has a range of 25-34° C., C has a range of 34-43° C., and D has a range of 44-50° C.

[0054] In some embodiments, a collection of a plurality of the above exhaust pressure intervals constitutes a total range of exhaust pressure values.

[0055] In this embodiment, the total range of the exhaust pressure distribution can be, for example, a closed interval of 1.0 MPa to 4.0 MPa. The total range of the exhaust pressure distribution can be divided into four sub-intervals, for example, E is 1.0-1.7 MPa; F is 1.8-2.5 MPa; G is 2.6-3.3 MPa; H is 3.4-4.0 MPa.

[0056] In some embodiments, in step S108, the initial speed gear is corrected according to the supercooling degree and the updated exhaust pressure to obtain a corrected gear, which may further include the following steps:

[0057] According to the above-mentioned updated exhaust pressure and subcooling degree, the preset external fan gear correction distribution table is searched to determine the exhaust pressure interval and subcooling degree interval in the above-mentioned external fan gear correction distribution table corresponding to the above-mentioned updated exhaust pressure and subcooling degree respectively.

[0058] According to the above exhaust pressure interval and supercooling interval, the corresponding corrected speed gear in the above external fan gear correction distribution table is determined.

[0059] The above-mentioned external fan gear position correction distribution table includes multiple above-mentioned subcooling intervals and multiple above-mentioned exhaust pressure intervals, and each combination of the above-mentioned subcooling intervals and the above-mentioned exhaust pressure intervals uniquely corresponds to one above-mentioned corrected speed gear position.

[0060] In this embodiment, refer to Table 2 for an external fan gear position correction distribution table.

[0061]

[0062] As shown in Table 2, a plurality of exhaust pressure intervals E, F, G, and H are distributed in the first direction, and subcooling intervals W, X, Y, and Z are distributed in the second direction.

[0063] Exemplarily, if the actually detected updated exhaust pressure falls within the exhaust pressure coordinate reference interval E, and the supercooling degree falls within the supercooling degree coordinate reference interval W, then it is determined that the corrected speed gear in this case is n17.

[0064] In some embodiments, the total range of the supercooling value is 2 to 15°C.

[0065] In some embodiments, after the air conditioner is turned on and before the outer ring temperature and exhaust pressure of the air conditioner are obtained, the method further includes: controlling the air conditioner to enter a cooling mode. In the cooling mode, the outer ring temperature and exhaust pressure of the air conditioner are obtained. The method of the present application is applied in the cooling mode of the air conditioner.

[0066] In this embodiment, the total range of the supercooling distribution can be, for example, a closed interval of 2 to 15° C. The total range of the supercooling distribution can be divided into four sub-intervals, for example, W is 2-5° C.; X is 6-9° C.; Y is 10-13° C.; and Z is 14-15° C.

[0067] Each speed in the speed gear is uniformly taken at fixed intervals between the minimum and maximum values ​​of the external fan speed.

[0068] Among the multiple speed gears, the first half of the speed gears are used in the initial state gear distribution table and are evenly distributed; the second half of the speed gears are used in the external fan gear correction distribution table and are evenly distributed.

[0069] In some embodiments, each speed gear n in the initial state gear distribution table i , the corresponding speed gear in the external fan gear correction distribution table is n i+M / 2 ;

[0070] Wherein, M is the total number of speed gears; i is the i-th speed gear in the initial state gear distribution table.

[0071] For example, referring to Table 2, the total number of speed gears M is 32, and the speed range of the external fan is divided into 32 equal parts, and each sub-interval corresponds to a speed gear. When correcting the speed gear speed, the speed of the gear is n i The speed is corrected to the speed n i+M / 2 The gear position correction distribution table of the external fan has the last 16 gear positions. The initial state gear position distribution table has the first 16 gear positions.

[0072] For example, in combination with Table 1 and Table 2, when the specific gear is corrected, the speed of the external fan in the initial state gear distribution table is the speed gear of n1, and after adjustment, it is adjusted to the speed gear of n17 in the external fan gear correction distribution table. The speed of the external fan in the initial state gear distribution table is the speed gear of n2, and after adjustment, it is adjusted to the speed gear of n18 in the external fan gear correction distribution table.

[0073] Second, see Appendix Figure 2 As shown, the present application proposes an air conditioner outdoor fan control device 2, comprising:

[0074] The first acquisition module 21 is used to obtain the outer ring temperature and exhaust pressure of the air conditioner after the air conditioner is turned on;

[0075] A first determination module 22, used to determine an initial speed gear of the external fan according to the external ring temperature and the exhaust pressure;

[0076] The second acquisition module 23 is used to control the external fan to operate according to the above initial speed gear for a predetermined period of time to obtain the supercooling degree;

[0077] A correction module 24, used for correcting the initial speed gear position according to the above-mentioned supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position;

[0078] The control module 25 is used to control the above-mentioned external fan to operate according to the above-mentioned corrected speed gear.

[0079] In some embodiments, a mode determination module is also included, which is used to control the air conditioner to enter a cooling mode before obtaining the outer ring temperature and exhaust pressure of the air conditioner after the air conditioner is turned on.

[0080] In some embodiments, the first determination module 22 is also used to look up a pre-set initial state gear distribution table based on the above-mentioned outer ring temperature and exhaust pressure, and determine the outer ring temperature interval and exhaust pressure interval in the above-mentioned initial state gear distribution table corresponding to the above-mentioned outer ring temperature and exhaust pressure respectively.

[0081] According to the above outer ring temperature interval and exhaust pressure interval, the initial speed gear in the above initial state gear distribution table is determined.

[0082] The initial state gear distribution table includes a plurality of the outer ring temperature intervals and a plurality of the exhaust pressure intervals, and each combination of the outer ring temperature interval and the exhaust pressure interval uniquely corresponds to one initial speed gear.

[0083] In some embodiments, the correction module 24 is also used to search a pre-set external fan gear correction distribution table according to the above-mentioned updated exhaust pressure and subcooling degree, and determine the exhaust pressure interval segment and subcooling degree interval segment in the above-mentioned external fan gear correction distribution table corresponding to the above-mentioned updated exhaust pressure and subcooling degree respectively.

[0084] According to the above exhaust pressure interval and supercooling interval, the corresponding corrected speed gear in the above correction distribution table is determined.

[0085] The above-mentioned external fan gear position correction distribution table includes multiple above-mentioned subcooling intervals and multiple above-mentioned exhaust pressure intervals, and each combination of the above-mentioned subcooling intervals and the above-mentioned exhaust pressure intervals uniquely corresponds to one above-mentioned corrected speed gear position.

[0086] Figure 3 is a schematic diagram of an electronic device provided by an embodiment of the present application. Figure 3 As shown, the electronic device 3 of this embodiment includes: a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and executable on the processor 30, such as an air conditioner outdoor fan control program. When the processor 30 executes the computer program 32, the steps in the above-mentioned method embodiments are implemented, such as Figure 1 Alternatively, when the processor 30 executes the computer program 32, the functions of the modules in the above-mentioned device embodiments are realized, for example, Figure 2 The functions of the first acquisition module 21 to the control module 25 are shown.

[0087] Exemplarily, the computer program 32 may be divided into one or more modules / units, which are stored in the memory 31 and executed by the processor 30 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 32 in the electronic device 3.

[0088] The electronic device 3 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device may include, but is not limited to, a processor 30 and a memory 31. Those skilled in the art will appreciate that Figure 3 It is only an example of the electronic device 3 and does not constitute a limitation of the electronic device 3. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the above-mentioned electronic device may also include input and output devices, network access devices, buses, etc.

[0089] The processor 30 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0090] The memory 31 may be an internal storage unit of the electronic device 3, such as a hard disk or memory of the electronic device 3. The memory 31 may also be an external storage device of the electronic device 3, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 3. Further, the memory 31 may include both an internal storage unit and an external storage device of the electronic device 3. The memory 31 is used to store the computer program and other programs and data required by the electronic device. The memory 31 may also be used to temporarily store data that has been output or is to be output.

[0091] In a fourth aspect, the present application proposes an air conditioner 4, which uses any of the methods described above to control the operation of the air conditioner's outdoor fan; or, the air conditioner 4 has an electronic device 3 as described above.

[0092] In some embodiments, it also includes a pressure sensor 71, a temperature sensor 72 and an external fan 73 respectively connected to the processor 30 in the above-mentioned electronic device 3; wherein the above-mentioned pressure sensor 71 is used to detect the exhaust pressure; the above-mentioned temperature sensor 72 is used to detect the external ring temperature; the above-mentioned external fan 73 is used to operate under the control of the above-mentioned electronic device 3.

[0093] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0094] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0095] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0096] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0098] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0099] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0100] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for controlling an outdoor fan of an air conditioner, characterized in that: include: After the air conditioner is turned on, obtain the outer ring temperature and exhaust pressure of the air conditioner; Determining an initial speed gear of the external fan according to the external ring temperature and the exhaust pressure; After controlling the external fan to operate according to the initial speed gear for a predetermined period of time, obtaining the degree of supercooling; Correcting the initial speed gear position according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position; The external fan is controlled to operate according to the corrected speed gear.

2. The air conditioner outdoor fan control method according to claim 1, characterized in that: Determining the initial speed gear of the external fan according to the external ring temperature and the exhaust pressure includes: According to the outer ring temperature and the exhaust pressure, searching a preset initial state gear distribution table to determine the outer ring temperature interval and the exhaust pressure interval in the initial state gear distribution table corresponding to the outer ring temperature and the exhaust pressure respectively; Determining the initial speed gear in the initial state gear distribution table according to the outer ring temperature interval and the exhaust pressure interval; The initial state gear distribution table includes a plurality of the outer ring temperature intervals and a plurality of the exhaust pressure intervals, and each combination of the outer ring temperature interval and the exhaust pressure interval uniquely corresponds to one initial speed gear.

3. The air conditioner outdoor fan control method according to claim 2, characterized in that: A set of multiple outer ring temperature intervals constitutes a total range of outer ring temperature values; A collection of a plurality of exhaust pressure intervals constitutes a total range of exhaust pressure values.

4. The air conditioner outdoor fan control method according to claim 3, characterized in that: The total range of the value of the outer ring temperature is 15 to 50°C; The total range of the exhaust pressure value is 1.0 MPa to 4.0 MPa; The overall range of the subcooling value is 2 to 15°C.

5. The air conditioner outdoor fan control method according to claim 1, characterized in that: The step of correcting the initial speed gear position according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position includes: According to the exhaust pressure and the degree of subcooling, searching a preset external fan gear position correction distribution table, and determining the exhaust pressure interval and the degree of subcooling interval in the external fan gear position correction distribution table corresponding to the updated exhaust pressure and the degree of subcooling, respectively; According to the exhaust pressure interval and the subcooling interval, determining the corresponding corrected speed gear in the external fan gear correction distribution table; The external fan gear position correction distribution table includes a plurality of the subcooling intervals and a plurality of the exhaust pressure intervals, and each combination of the subcooling intervals and the exhaust pressure intervals uniquely corresponds to one corrected speed gear position.

6. The air conditioner outdoor fan control method according to claim 1, characterized in that: After the air conditioner is turned on, before obtaining the outer ring temperature and exhaust pressure of the air conditioner, the method further includes: Control the air conditioner to enter cooling mode.

7. The air conditioner outdoor fan control method according to claim 1, characterized in that: in, Each speed in the speed gear is uniformly taken at fixed intervals between the minimum and maximum speeds of the external fan; Among the multiple speed gears, the first half of the speed gears are used in the initial state gear distribution table and are evenly distributed; the second half of the speed gears are used in the external fan gear correction distribution table and are evenly distributed; The speed gear n in each of the initial state gear distribution tables i , the corresponding speed gear in the external fan gear correction distribution table is n i+M / 2 ; Wherein, M is the total number of speed gears; i is the i-th speed gear in the initial state gear distribution table.

8. An air conditioner outdoor fan control device, characterized in that: include: The first acquisition module is used to obtain the outer ring temperature and exhaust pressure of the air conditioner after the air conditioner is turned on; A first determination module, used to determine an initial speed gear of the external fan according to the external ring temperature and the exhaust pressure; A second acquisition module is used to control the external fan to operate according to the initial speed gear for a predetermined period of time to obtain the supercooling degree; A correction module, used for correcting the initial speed gear position according to the supercooling degree and the updated exhaust pressure to obtain a corrected speed gear position; A control module is used to control the external fan to operate according to the corrected speed gear.

9. An electronic device, characterized in that: include: It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the air conditioner outdoor fan control method as described in any one of claims 1 to 7 when executing the computer program.

10. An air conditioner, characterized in that: The air conditioner uses the method described in any one of claims 1 to 7 to control the operation of the air conditioner outdoor fan; or, the air conditioner has the electronic device described in claim 9.

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