Hydrostatic self-regulating control method and device, and air conditioning equipment

Abstract

The application discloses a static pressure self-adjusting control method and device and air conditioning equipment. The method comprises the following steps: detecting a current environment temperature and operation parameters of a unit, determining a current static pressure value of the unit according to the current environment temperature and the operation parameters; determining a target wind speed required for restoring the static pressure value to a preset static pressure value; comparing the target wind speed with a preset maximum wind speed; the preset maximum wind speed has a corresponding relationship with the preset static pressure value; and adjusting the operation of a fan according to a comparison result. The application identifies static pressure changes according to operation parameters of the unit, then determines a target wind speed required for static pressure self-adjusting, and further adjusts the speed of the fan to realize static pressure adjusting, so that the static pressure of the outdoor unit can reach the self-adjusting effect, the outdoor unit can adapt to various installation conditions, manual adjustment of the static pressure of the unit according to the installation conditions is not needed, manpower is saved, and stable operation of the unit is ensured.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a static pressure self-regulating control method, device, and air conditioning equipment. Background Technology

[0002] The static pressure generated when the outdoor unit of an air conditioner is working is produced by the interaction between the outdoor unit and the surrounding environment. Static pressure is a key parameter that determines whether the installation location of the air conditioner is suitable.

[0003] For multi-split air conditioner outdoor units, there are certain requirements for outlet static pressure, fan speed range, and installation space at the factory. However, the actual installation conditions and the conditions of the unit after installation are uncontrollable and often rely on installers' experience to adjust the settings. For example, in some cases, the air conditioner outdoor unit will be located in a relatively narrow or poorly ventilated space, which will lead to an increase in static pressure. In order to prevent the increase in static pressure from affecting the normal operation and performance of the system, the traditional method is to connect air ducts at the air conditioner outlet to the outside of the space, while designing a certain outlet static pressure to prevent the air volume from decreasing.

[0004] Existing technology includes an automatic static pressure identification and adjustment scheme for outdoor units of air conditioners. This scheme identifies the static pressure status of the outdoor unit based on the fan current during stable operation. However, this scheme does not consider the unit's operating parameters and model. The actual installation space for outdoor units varies, making it difficult to consistently meet design requirements for the outdoor unit's outlet static pressure, thus wasting manpower and resources.

[0005] There is currently no effective solution to the problem that the actual installation space of the outdoor unit of an air conditioner is variable and the static pressure cannot be self-adjusted in the existing technology. Summary of the Invention

[0006] This invention provides a static pressure self-regulating control method, device, and air conditioning equipment to solve the problem in the prior art where the actual installation space of the outdoor unit of an air conditioner varies and the static pressure cannot be self-regulated.

[0007] To solve the above-mentioned technical problems, the present invention provides a static pressure self-regulating control method, wherein the method includes: detecting the current ambient temperature and the operating parameters of the unit; determining whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and the operating parameters; if it deviates, determining the target wind speed required to restore the static pressure value to the preset static pressure value; and controlling the wind speed of the fan to adjust to the target wind speed.

[0008] Further, determining whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and the operating parameters includes: retrieving the operating parameter data corresponding to the current ambient temperature from the database; wherein, the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures; and determining whether the current static pressure value of the unit deviates from the preset static pressure value based on the detected changes in the operating parameters relative to the operating parameter data.

[0009] Further, based on the detected changes in the operating parameters relative to the operating parameter data, it is determined whether the current static pressure value of the unit deviates from the preset static pressure value, including:

[0010] If the operating parameters are within the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit has not deviated from the preset static pressure value;

[0011] If the operating parameter is greater than the maximum value of the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit is greater than the preset static pressure value;

[0012] If the operating parameter is less than the minimum value of the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit is less than the preset static pressure value.

[0013] Furthermore, the target wind speed required to restore the static pressure value to the preset static pressure value is determined by the following formula:

[0014] P (total pressure) = Ps (static pressure) + P V (Dynamic pressure);

[0015] P V (Dynamic pressure) = ρV² / 2;

[0016] Wherein, P (total pressure) is the system pressure, Ps (static pressure) is the preset static pressure value, and V is the target wind speed.

[0017] Furthermore, after determining the target wind speed required to restore the static pressure value to the preset static pressure value, the method further includes: comparing the target wind speed with the maximum wind speed currently set by the unit; if the target wind speed is less than or equal to the maximum wind speed currently set by the unit, then there is no need to adjust the maximum wind speed currently set by the unit; if the target wind speed is greater than the maximum wind speed currently set by the unit, then the maximum wind speed currently set by the unit is updated to the target wind speed.

[0018] Furthermore, the operating parameters include: condensing pressure and / or compression ratio.

[0019] The present invention also provides a static pressure self-regulating control device, wherein the device comprises:

[0020] The detection module is used to detect the current ambient temperature and the unit's operating parameters;

[0021] The judgment module is used to determine whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and the operating parameters.

[0022] The control module is used to determine the target wind speed required to restore the static pressure value to the preset static pressure value when the current static pressure value of the unit deviates from the preset static pressure value; and to control the wind speed of the fan to adjust to the target wind speed.

[0023] The present invention also provides an air conditioning device, wherein the air conditioning device includes the above-mentioned static pressure self-regulating control device.

[0024] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the static pressure self-regulating control method as described above.

[0025] The present invention also provides an electronic device, comprising: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement the static pressure self-regulating control method as described above.

[0026] By applying the technical solution of this invention, static pressure changes are identified based on ambient temperature and the unit's own operating parameters. Then, the target wind speed required for static pressure self-adjustment is determined. Furthermore, static pressure is adjusted by regulating the fan speed, so that the outdoor unit's outlet static pressure reaches the preset static pressure value, achieving static pressure self-adjustment. This allows the outdoor unit to adapt to varying installation conditions without requiring manual adjustment of the unit's static pressure according to installation conditions, saving manpower. When the unit's installation location changes, the unit can achieve real-time and timely static pressure self-adjustment, ensuring stable unit operation. Attached Figure Description

[0027] Figure 1 This is a flowchart of a static pressure self-regulating control method according to an embodiment of the present invention;

[0028] Figure 2 This is a detailed flowchart of the static pressure self-regulating control method according to an embodiment of the present invention;

[0029] Figure 3 This is a structural block diagram of a static pressure self-regulating control device according to an embodiment of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0031] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0032] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0033] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0034] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0035] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0036] According to an embodiment of the present invention, a method embodiment of a static pressure self-regulating control scheme is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0037] Figure 1 This is a flowchart of a static pressure self-regulating control method according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0038] Step S101: Detect the current ambient temperature and the unit's operating parameters.

[0039] Step S102: Determine whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and operating parameters.

[0040] Step S103: If there is a deviation, determine the target wind speed required to restore the static pressure value to the preset static pressure value. If there is no deviation, there is no need to adjust the outdoor unit's outlet static pressure.

[0041] Step S104: Adjust the fan speed to the target speed.

[0042] This embodiment identifies static pressure changes based on ambient temperature and the unit's own operating parameters, then determines the target wind speed required for static pressure self-regulation. Furthermore, it adjusts the fan speed to regulate static pressure, ensuring the outdoor unit's outlet static pressure reaches the preset value. This achieves static pressure self-regulation, allowing the outdoor unit to adapt to varying installation conditions without requiring manual adjustment of the unit's static pressure, saving manpower. It also enables real-time static pressure self-regulation when the unit's installation location changes, ensuring stable unit operation.

[0043] The operating parameters in this embodiment include condensing pressure and / or compression ratio. The condensing pressure is obtained using a pressure sensor located near the condenser inlet.

[0044] The compression ratio ε is calculated using the following formula:

[0045] T （排气） =T （吸气） *(P) （排气） / P （吸气） ) （K-1 / K） ;

[0046] Compression ratio ε = (P （排气） / P （吸气） ) （K-1 / K） .

[0047] Among them, T （排气） It is the exhaust temperature, T （吸气） It is the inhalation temperature, P （排气） It is the exhaust pressure, obtained through a pressure sensor located at the compressor outlet, P （吸气） It is the suction pressure, obtained through a pressure sensor installed at the compressor inlet. K is the adiabatic index of the gas; when the gas is air, K = 1.4.

[0048] It should be noted that exhaust temperature and intake temperature are positively correlated. Increased static pressure in the unit increases exhaust resistance and compression ratio, thus raising the exhaust temperature. In other words, condensing pressure and compression ratio are positively correlated with static pressure. Therefore, this embodiment can determine whether the unit's current static pressure deviates from the preset static pressure value based on the current ambient temperature and operating parameters. During the unit's factory design phase, the operating parameters corresponding to the outdoor unit's outlet static pressure reaching the preset static pressure value under different ambient temperatures can be set and stored in a database.

[0049] To determine whether the current static pressure of the unit deviates from the preset static pressure value based on the current ambient temperature and operating parameters, the following preferred implementation method can be used: Retrieve the operating parameter data corresponding to the current ambient temperature from the database; wherein, the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value under different ambient temperatures; determine whether the current static pressure of the unit deviates from the preset static pressure value based on the detected changes in the operating parameters relative to the operating parameter data. If the operating parameters are within the preset error range of the operating parameter data, it is determined that the current static pressure of the unit has not deviated from the preset static pressure value; if the operating parameters are greater than the maximum value of the preset error range of the operating parameter data, it is determined that the current static pressure of the unit is greater than the preset static pressure value; if the operating parameters are less than the minimum value of the preset error range of the operating parameter data, it is determined that the current static pressure of the unit is less than the preset static pressure value. Based on this, static pressure changes can be accurately and timely identified through ambient temperature and operating parameters. When a change in static pressure is detected, the static pressure can be adjusted in a timely manner by adjusting the fan speed, so that the static pressure of the outdoor unit outlet reaches the preset static pressure value, achieving static pressure self-adjustment, enabling the outdoor unit to adapt to varying installation conditions.

[0050] When it is detected that the current static pressure value of the unit deviates from the preset static pressure value, it is necessary to determine the target wind speed required to restore the static pressure value to the preset static pressure value. Specifically, this can be achieved through the following formula:

[0051] P (total pressure) = Ps (static pressure) + P V (Dynamic pressure);

[0052] P V (Dynamic pressure) = ρV² / 2;

[0053] Wherein, P (total pressure) is the system pressure, which varies depending on the type of fan selected. Once the fan selection is determined, the total pressure is a fixed value. Ps (static pressure) is the preset static pressure value, and V is the target wind speed.

[0054] After identifying that the current static pressure value of the unit deviates from the preset static pressure value, P can be calculated based on the system pressure value and the preset static pressure value. V (Dynamic pressure) can be further calculated to obtain the target wind speed required to restore the static pressure value to the preset static pressure value. By controlling the fan speed to the target wind speed, the static pressure of the outdoor unit's outlet air can be adjusted to the preset static pressure value, realizing static pressure self-regulation, which enables the outdoor unit to adapt to various installation conditions.

[0055] Considering that a maximum wind speed is set during unit operation, for example, during the unit's factory design phase, the database stores reference operating ranges for condensing pressure and compression ratio under different ambient temperatures during stable operation. These reference operating ranges correspond to a fan speed range of (0~N1 rpm), where N1 rpm is the set maximum wind speed. The wind speed during unit operation will not exceed this set maximum wind speed. After calculating the target wind speed using the above formula, it's necessary to consider whether the target wind speed has exceeded the set maximum wind speed. If so, the set maximum wind speed needs to be adjusted and updated to control the fan speed to the target wind speed. For example, an increase in unit static pressure leads to a decrease in dynamic pressure, thus reducing wind speed, airflow, and fan speed. Therefore, to maintain the unit static pressure at the initial design value, the fan speed should be increased. However, due to the factory-set fan speed range (i.e., the aforementioned set maximum wind speed), the required fan speed will exceed the factory setting. Furthermore, an increase in unit static pressure increases exhaust resistance and the compression ratio, thereby raising the exhaust temperature. Based on this, this embodiment provides a preferred implementation method, which involves determining the target wind speed required to restore the static pressure value to the preset static pressure value, and then comparing the target wind speed with the currently set maximum wind speed of the unit. If the target wind speed is less than or equal to the currently set maximum wind speed of the unit, then there is no need to adjust the currently set maximum wind speed of the unit; if the target wind speed is greater than the currently set maximum wind speed of the unit, then the currently set maximum wind speed of the unit is updated to the target wind speed. This ensures that when adjusting the fan speed according to the target wind speed, it is not limited by the currently set maximum wind speed of the unit, ensuring that the unit's wind speed can be accurately adjusted to the target wind speed, thereby ensuring that the outdoor unit's outlet static pressure is adjusted to the preset static pressure value and guaranteeing stable unit operation.

[0056] This embodiment identifies the static pressure operating status of the outdoor unit's installation location by using ambient temperature and the unit's operating parameters (condensing pressure, compression ratio). Based on these parameters, it detects whether the unit's static pressure needs adjustment and then provides feedback on the required fan speed. The unit adjusts its fan operating range according to this feedback, achieving self-regulation of static pressure. This allows for real-time and timely self-regulation of static pressure when the unit's installation location changes, ensuring stable operation. This embodiment overcomes the limitations of existing outdoor units where the factory-installed fan speed range restricts static pressure adjustment; it also addresses the problem that the actual operating static pressure of existing outdoor units is difficult to consistently meet design requirements due to varying installation space and other conditions, making manual adjustment time-consuming and laborious; and it resolves issues such as abnormal unit operation, energy consumption fluctuations, and noise caused by static pressure mismatch. Example 2

[0057] Figure 2 This is a detailed flowchart of the static pressure self-regulating control method according to an embodiment of the present invention, as follows: Figure 2 As shown, the method includes:

[0058] Step 1: The outdoor unit operates stably within the factory-set static pressure range of the fan speed according to the factory design. The reference operating range of condensing pressure and compression ratio during stable operation under different ambient temperatures is the design operating range (condensing pressure range P1~P2, compression ratio range ε1~ε2). At this time, the corresponding fan speed range is (0~N1rpm), where N1rpm is the maximum set wind speed of the unit. This is used as the factory design parameter for comparison with the actual operating parameters.

[0059] Step 2: During actual operation, when the system is running at the same ambient temperature t as the design, it acquires operating parameters such as condensing pressure (or the condensing pressure fluctuation range P3~P4) and compression ratio (or the compression ratio fluctuation range ε3~ε4). The unit determines whether the current static pressure state deviates from the preset static pressure value based on the operating parameters, and calculates the required fan speed range (0~N2rpm) to maintain the static pressure at the preset static pressure value, which is taken as the actual operating wind speed of the fan.

[0060] Step 3: Compare the maximum fan speed N2 required to maintain the unit static pressure at the preset static pressure value with the set maximum fan speed N1. If N2≤N1, the static pressure is too low and the fan speed is reduced. If N2>N1, the static pressure is too high and the fan speed needs to be increased. Update the set maximum fan speed N1 to N2 and increase the fan speed to maintain the static pressure within the allowable deviation of the design value.

[0061] The following example illustrates this: Assuming the factory-designed static pressure is 0 Pa, in order to maintain the unit's operating conditions under the design static pressure and ensure normal operation, the design fan speed range is 0~1000 rpm, the unit's design condensing pressure is 0~4.3 MPa, and the design operating range of the compression ratio is 1.2~10.

[0062] Assume the unit actually operates in a relatively confined or poorly ventilated space, with an external ambient temperature of t. The unit operates according to its factory design parameters, and the ambient temperature corresponds to a condensing pressure of P at the design time. 实际 (0 < P < 4.3 MPa), actual operating compression ratio ε (1.2 < P < 10). In actual space, under the same external ambient temperature t, the actual operating condensing pressure P' > P, ε' > ε. According to the above principle, the actual static pressure of the unit at this time is greater than 0 Pa, which is the factory design static pressure. In order to maintain the static pressure at the design value, the fan speed needs to be increased. Assuming that the required fan speed N2 > 1000 rpm, the unit will automatically open the maximum fan speed operating range to N2. Conversely, if the unit determines that it is under negative static pressure conditions based on the actual operating condensing pressure and compression ratio, the unit will automatically determine and reduce the design fan speed at the same temperature to the required fan speed in order to maintain the static pressure at the design value and ensure the normal operation of the unit.

[0063] It should be noted that the parameters and their combinations mentioned in the examples above are for reference only. Due to various complex factors such as control logic, capacity, sales scope, and accessories, the parameters of the unit may vary. The examples are only for illustrating the control principle of the control scheme in this embodiment. The values ​​of condensing pressure P, compressor ε, and speed N may vary depending on the situation and needs, as well as the selected unit. Example 3

[0064] Corresponding to Figure 1 The static pressure self-regulating control method described in this embodiment provides a static pressure self-regulating control device, such as... Figure 3 The diagram shown depicts the structural block of a static pressure self-regulating control device, which includes:

[0065] Detection module 10 is used to detect the current ambient temperature and the unit's operating parameters;

[0066] Judgment module 20, connected to detection module 10, is used to determine whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and operating parameters;

[0067] The control module 30 is connected to the judgment module 20 and is used to determine the target wind speed required to restore the static pressure value to the preset static pressure value when the current static pressure value of the unit deviates from the preset static pressure value; and to control the wind speed of the fan to adjust to the target wind speed.

[0068] The static pressure self-regulating control device provided in this embodiment can realize the static pressure self-regulating control scheme described above. It can identify static pressure changes based on ambient temperature and the unit's own operating parameters, then determine the target wind speed required for static pressure self-regulation, and further adjust the static pressure by adjusting the fan speed, so that the static pressure of the outdoor unit's outlet air reaches the preset static pressure value, thus realizing static pressure self-regulation. This allows the outdoor unit to adapt to varying installation conditions without requiring manual adjustment of the unit's static pressure according to the installation conditions, saving manpower. When the unit's installation location changes, it can realize real-time and timely static pressure self-regulation, ensuring stable operation of the unit.

[0069] This embodiment also provides an air conditioning device, which includes the above-mentioned static pressure self-regulating control device. Example 4

[0070] This embodiment provides an electronic device for a static pressure self-regulating control method. The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein...

[0071] The memory stores instructions executable by the at least one processor. These instructions are executed by the at least one processor to enable the at least one processor to: detect the current ambient temperature and the unit's operating parameters; determine whether the unit's current static pressure value deviates from a preset static pressure value based on the current ambient temperature and operating parameters; if it deviates, determine the target wind speed required to restore the static pressure value to the preset static pressure value; if it does not deviate, there is no need to adjust the outdoor unit's outlet static pressure; and control the fan speed to adjust to the target wind speed. Example 5

[0072] This invention provides software for executing the technical solutions described in the above embodiments and preferred embodiments.

[0073] This invention provides a non-volatile computer storage medium storing computer-executable instructions that can execute the static pressure self-regulating control method in any of the above method embodiments.

[0074] The aforementioned storage medium stores the aforementioned software, and the storage medium includes, but is not limited to, optical discs, floppy disks, hard disks, and rewritable memory.

[0075] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0076] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0077] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0078] The units described as separate components may or may not be physically separate. 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 units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0079] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0080] If the integrated unit is implemented as 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 technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or 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 described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0081] The above-described product can execute the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the method provided in the embodiments of the present invention.

[0082] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. 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.

[0083] 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 static pressure self-regulating control method, characterized in that, The method includes: Monitor the current ambient temperature and unit operating parameters; Determine whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and the operating parameters; this includes: retrieving the operating parameter data corresponding to the current ambient temperature from the database; wherein, the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures; and determining whether the current static pressure value of the unit deviates from the preset static pressure value based on the detected changes in the operating parameters relative to the operating parameter data. If the deviation occurs, determine the target wind speed required to restore the static pressure value to the preset static pressure value; Adjust the fan speed to the target speed.

2. The method according to claim 1, characterized in that, Based on the changes in the detected operating parameters relative to the operating parameter data, determine whether the current static pressure value of the unit deviates from the preset static pressure value, including: If the operating parameters are within the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit has not deviated from the preset static pressure value; If the operating parameter is greater than the maximum value of the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit is greater than the preset static pressure value; If the operating parameter is less than the minimum value of the preset error range of the operating parameter data, then it is determined that the current static pressure value of the unit is less than the preset static pressure value.

3. The method according to claim 1, characterized in that, The target wind speed required to restore the static pressure value to the preset static pressure value is determined by the following formula: P (total pressure) = Ps (static pressure) + P V (Dynamic pressure); P V (Dynamic pressure) = ρV² / 2; Wherein, P (total pressure) is the system pressure, Ps (static pressure) is the preset static pressure value, and V is the target wind speed.

4. The method according to claim 1, characterized in that, After determining the target wind speed required to restore the static pressure value to the preset static pressure value, the method further includes: Compare the target wind speed with the maximum wind speed currently set by the unit; If the target wind speed is less than or equal to the current set maximum wind speed of the unit, then there is no need to adjust the current set maximum wind speed of the unit. If the target wind speed is greater than the current maximum wind speed set by the unit, then the current maximum wind speed set by the unit will be updated to the target wind speed.

5. The method according to any one of claims 1 to 4, characterized in that, The operating parameters include: condensing pressure and / or compression ratio.

6. A static pressure self-regulating control device, characterized in that, The device includes: The detection module is used to detect the current ambient temperature and the unit's operating parameters; The judgment module is used to determine whether the current static pressure value of the unit deviates from the preset static pressure value based on the current ambient temperature and the operating parameters; including: retrieving the operating parameter data corresponding to the current ambient temperature from the database; wherein, the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures; and determining whether the current static pressure value of the unit deviates from the preset static pressure value based on the detected changes in the operating parameters relative to the operating parameter data. The control module is used to determine the target wind speed required to restore the static pressure value to the preset static pressure value when the current static pressure value of the unit deviates from the preset static pressure value; and to control the wind speed of the fan to adjust to the target wind speed.

7. An air conditioning device, characterized in that, The air conditioning equipment includes the static pressure self-regulating control device as described in claim 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 5.

9. An electronic device, characterized in that, include: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the method as described in any one of claims 1 to 5.

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