Static pressure self-adjusting control method and device and air conditioning equipment

Abstract

The invention discloses a fan rotating speed control method and device and air conditioning equipment. The method comprises the steps that the current environment temperature and operation parameters of a unit are detected, and the current static pressure value of the unit is determined 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 wind speed maximum value; wherein the preset wind speed maximum value and the preset static pressure value have a corresponding relation; and adjusting the operation of the fan according to the comparison result. The static pressure change is recognized according to the running parameters of the unit, then the target air speed needed by static pressure self-adjustment is determined, static pressure adjustment is further achieved by adjusting the rotating speed of the draught fan, the air outlet static pressure of the outdoor unit achieves the self-adjustment effect, the outdoor unit can adapt to changeable installation conditions, and the installation efficiency is improved. Static pressure of the unit does not need to be manually adjusted according to installation conditions, and manpower is saved. And stable operation of the unit is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a static pressure self-regulating control method, device and air conditioning equipment. Background Art

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

[0003] For multi-split air conditioner outdoor units, there are certain requirements for outlet static pressure, fan speed range and installation space when leaving the factory, but the actual installation conditions and the conditions of the unit after installation are not controllable, and mostly rely on the installer to adjust the settings based on experience. For example, in some cases, the air conditioner outdoor unit will be in a relatively narrow or poorly ventilated space, which will cause the static pressure to increase. 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 the air duct at the air outlet of the air conditioner to the outside of the space, and at the same time design a certain outlet static pressure without reducing the air volume.

[0004] There is a solution for automatically identifying and adjusting the static pressure of the outdoor unit of an air conditioner in the prior art. This solution obtains the fan current when the outdoor fan is running stably and identifies the static pressure state of the outdoor unit when the fan is running according to the fan current. However, this solution does not take into account the unit's operating parameters and models. The actual installation space of the outdoor unit varies, and the static pressure of the outdoor unit outlet air cannot always meet the design requirements, which wastes manpower and material resources.

[0005] With regard to the problem in the prior art that the actual installation space of the air-conditioning outdoor unit is variable and the static pressure cannot be self-regulated, no effective solution has been proposed yet. Summary of the invention

[0006] The embodiments of the present invention provide a fan speed control method, device and air-conditioning equipment to solve the problem in the prior art that the actual installation space of the air-conditioning outdoor unit is variable and the static pressure cannot be self-regulated.

[0007] In order to solve the above 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, and judging whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and the operating parameters; if deviated, 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] Furthermore, judging whether the current static pressure value of the unit deviates from the preset static pressure value is performed based on the current ambient temperature and the operating parameters, including: retrieving the operating parameter data corresponding to the ambient temperature in the database according to the current ambient temperature; wherein the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures; judging whether the current static pressure value of the unit deviates from the preset static pressure value based on the change of the detected operating parameter relative to the operating parameter data.

[0009] Further, judging whether the current static pressure value of the unit deviates from the preset static pressure value according to the detected change of the operating parameter relative to the operating parameter data includes:

[0010] If the operating parameter is within the preset error range of the operating parameter data, determining that the current static pressure value of the unit does not deviate 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, determining 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, it is determined that the current static pressure value of the unit is less than the preset static pressure value.

[0013] Further, 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] Among them, 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 also includes: comparing the target wind speed with the maximum wind speed currently set for the unit; if the target wind speed is less than or equal to the maximum wind speed currently set for the unit, there is no need to adjust the maximum wind speed currently set for the unit; if the target wind speed is greater than the maximum wind speed currently set for the unit, the maximum wind speed currently set for 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] Detection module, used to detect the current ambient temperature and operating parameters of the unit;

[0021] A judgment module, used to judge whether the current static pressure value of the unit deviates from the preset static pressure value according to 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 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 when the program is executed by a processor, the static pressure self-regulating control method as described above is implemented.

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

[0026] By applying the technical solution of the present invention, static pressure changes are identified based on the ambient temperature and the operating parameters of the unit itself, and then the target wind speed required for static pressure self-regulation is determined. The static pressure is further regulated by adjusting the fan speed so that the air outlet static pressure of the outdoor unit reaches a preset static pressure value, thereby achieving static pressure self-regulation. This allows the outdoor unit to adapt to changing installation conditions, and there is no need to manually adjust the static pressure of the unit according to the installation conditions, thus saving manpower. When the installation position of the unit changes, the static pressure self-regulation of the unit can be achieved in real time and in a timely manner, thereby ensuring stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0029] Figure 3 4 is a structural block diagram of a static pressure self-regulating control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0031] 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.

[0032] 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.

[0033] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0034] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0035] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] 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 of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0038] Figure 1 is a flow chart of a static pressure self-regulating control method according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0039] Step S101, detecting the current ambient temperature and the operating parameters of the unit.

[0040] Step S102, judging whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and operating parameters.

[0041] 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 static pressure of the outdoor unit outlet air.

[0042] Step S104, controlling the wind speed of the fan to adjust to the target wind speed.

[0043] 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, and further adjusts the static pressure by adjusting the fan speed, so that the static pressure of the outdoor unit outlet reaches the preset static pressure value, and static pressure self-regulation is achieved, so that the outdoor unit can adapt to installation conditions with changing conditions, and there is no need to manually adjust the static pressure of the unit according to the installation conditions, saving manpower. When the installation position of the unit changes, the static pressure of the unit can be self-regulated in real time to ensure stable operation of the unit.

[0044] The operating parameters in this embodiment include condensing pressure and / or compression ratio. The condensing pressure is obtained by a pressure sensor arranged near the inlet of the condenser.

[0045] The compression ratio ε is calculated by the following formula:

[0046] T (排气) =T (吸气) *(P (排气) / P (吸气) ) (K-1 / K) ;

[0047] Compression ratio ε=(P (排气) / P (吸气) ) (K-1 / K) .

[0048] Among them, T (排气)is the exhaust temperature, T (吸气) is the suction temperature, P (排气) is the exhaust pressure, obtained by the pressure sensor installed at the outlet of the compressor, P (吸气) is the suction pressure, which is obtained by the pressure sensor installed at the inlet of the compressor. K is the adiabatic index of the gas. When the gas is air, K=1.4.

[0049] It should be noted that the exhaust temperature and the intake temperature are positively correlated. An increase in the static pressure of the unit will increase the exhaust resistance and increase the compression ratio, thereby increasing the exhaust temperature. In other words, the condensing pressure and the compression ratio are positively correlated with the static pressure. Therefore, the present embodiment can 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. During the factory design stage of the unit, the operating parameters corresponding to the unit can be set when the outdoor unit outlet static pressure reaches the preset static pressure value at different ambient temperatures, and the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures are stored in the database.

[0050] When judging whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and operating parameters, it can be realized by the following preferred implementation: according to the current ambient temperature, the operating parameter data corresponding to the ambient temperature in the database is retrieved; wherein, the database stores the operating parameter data corresponding to the unit maintaining the preset static pressure value at different ambient temperatures; according to the change of the detected operating parameters relative to the operating parameter data, it is judged whether the current static pressure value of the unit deviates from the preset static pressure value. If the operating parameter is within the preset error range of the operating parameter data, it is determined that the current static pressure value of the unit does not deviate 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, 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, it is determined that the current static pressure value of the unit is less than the preset static pressure value. Based on this, the static pressure change can be accurately and timely identified through the ambient temperature and operating parameters. When the static pressure change is identified, the static pressure is adjusted in time by adjusting the fan speed, so that the static pressure of the outdoor unit outlet reaches the preset static pressure value, and the static pressure self-regulation is realized, so that the outdoor unit can adapt to the installation conditions with changing conditions.

[0051] When it is identified 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, it can be achieved by the following formula:

[0052] P(total pressure)=Ps(static pressure)+P V (dynamic pressure);

[0053] P V (dynamic pressure) = ρV2 / 2;

[0054] Among them, P (total pressure) is the system pressure, which varies according to the type of fan selected. After the fan is selected, its P (total pressure) is a fixed value. Ps (static pressure) is the preset static pressure value, and V is the target wind speed.

[0055] 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), and furthermore, the target wind speed required to restore the static pressure value to the preset static pressure value can be calculated. By controlling the wind speed of the fan to the target wind speed, the static pressure of the outdoor unit outlet air can be adjusted to the preset static pressure value, realizing static pressure self-regulation, so that the outdoor unit can adapt to changing installation conditions.

[0056] Considering that the maximum wind speed will be set during the operation of the unit, for example, during the factory design stage of the unit, the database stores the reference operating range of the condensing pressure and compression ratio when operating stably at different ambient temperatures. The above reference operating range corresponds to the fan speed range of (0~N1rpm), N1rpm is the maximum wind speed set for the unit, and the wind speed during the operation of the unit will not exceed the set maximum wind speed. After the target wind speed is calculated according to the above formula, it is 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 wind speed to the target wind speed. For example, an increase in the static pressure of the unit will lead to a decrease in the dynamic pressure, so the wind speed will decrease, the air volume will decrease, and the fan speed will decrease. Therefore, in order to maintain the static pressure of the unit at the initial design value, the fan speed should be increased, but due to the factory fan speed range (i.e. the above-set maximum wind speed), the required fan speed will exceed the factory setting value. In addition, an increase in the static pressure of the unit will increase the exhaust resistance and increase the compression ratio, thereby increasing the exhaust temperature. Based on this, this embodiment provides a preferred implementation method, that is, after determining the target wind speed required to restore the static pressure value to the preset static pressure value, compare the target wind speed with the maximum wind speed currently set for the unit; if the target wind speed is less than or equal to the maximum wind speed currently set for the unit, there is no need to adjust the maximum wind speed currently set for the unit; if the target wind speed is greater than the maximum wind speed currently set for the unit, the maximum wind speed currently set for the unit is updated to the target wind speed. Accordingly, it can be ensured that when the wind speed of the fan is adjusted according to the target wind speed, it will not be limited by the maximum wind speed set for the unit, and the wind speed of the unit can be accurately adjusted to the target wind speed, so that the static pressure of the outdoor unit outlet air can be adjusted to the preset static pressure value, and the stable operation of the unit can be ensured.

[0057] This embodiment identifies the static pressure operating state of the installation position of the air-conditioning outdoor unit through the ambient temperature and the operating parameters of the unit (condensing pressure, compression ratio); detects whether the static pressure of the unit needs to be adjusted according to the operating parameters, and then gives feedback on the fan speed required by the unit. The unit adjusts the fan operating range according to the feedback to achieve self-regulation of the static pressure of the unit. When the installation position of the unit changes, the static pressure of the unit can be self-regulated in real time to ensure stable operation of the unit. This embodiment can solve the limitation that the static pressure of the existing outdoor unit cannot be adjusted by adjusting the fan speed due to the limited range of the factory fan speed; solves the problem that the actual operating air outlet static pressure of the existing outdoor unit is difficult to meet the design requirements at all times due to the changing conditions such as the installation space, and manual adjustment is time-consuming and labor-intensive; solves the problems of abnormal operation of the unit, energy consumption changes, noise, etc. caused by static pressure mismatch.

[0058] Example 2

[0059] Figure 2 is a detailed flow chart of the static pressure self-regulation control method according to an embodiment of the present invention, such as Figure 2 As shown, the method includes:

[0060] Step 1: The outdoor unit operates stably within the factory setting range of the fan speed according to the factory designed static pressure, and obtains the reference operating range of the condensing pressure and the compression ratio when operating stably at different ambient temperatures, that 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), and N1rpm is the maximum wind speed set for the unit, which is used as the design factory parameters for comparison with the actual operating parameters.

[0061] Step 2. During actual operation, when the system operates at the same ambient temperature t corresponding to the design, the system obtains operating parameters such as the condensing pressure (or the floating range of the condensing pressure P3~P4) and the compression ratio (or the floating range of the compression ratio 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: in order to maintain the static pressure at the preset static pressure value, the required fan speed range (0~N2rpm) is used as the actual operating wind speed of the fan.

[0062] Step 3, compare the maximum fan speed N2 required to maintain the static pressure of the unit 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 needs to be reduced. If N2>N1, the static pressure is too high and the fan speed needs to be increased. The set maximum fan speed N1 is updated to N2, and the fan speed is increased to maintain the static pressure within the allowable deviation of the design value.

[0063] The following example illustrates: Assuming the factory design static pressure is 0pa, in order to maintain the unit operating conditions at the design static pressure and operate normally, the design fan speed range is 0~1000rpm, the unit design condensing pressure is 0~4.3MPa, and the compression ratio design operating range is 1.2~10.

[0064] Assume that the unit is actually operating in a relatively narrow or poorly ventilated space. At this time, the external ambient temperature is t, and the unit is operating according to the factory design parameters. In addition, the ambient temperature corresponds to the condensing pressure P during design. 实际 (0<P<4.3MPa), actual operation compression ratio ε(1.2<P<10), in actual space, under the same external environment temperature condition t, actual operation condensing pressure P'>P, ε'>ε, according to the above principle, the actual static pressure of the unit at this time is greater than 0Pa, that is, the factory design static pressure. At this time, 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>1000rpm at this time, the unit automatically releases the maximum fan speed operation range to N2. Conversely, if the unit determines that the static pressure is negative through the actual operation condensing pressure and compression ratio, the unit will automatically determine to reduce the design fan speed of the same temperature to the required fan speed to maintain the static pressure at the design value to ensure the normal operation of the unit.

[0065] It should be noted that the parameters and the matching of parameters in the above examples are for reference only. The parameters of the units may vary due to various complex reasons such as control logic, capacity, sales range, matching accessories, etc. The examples are only for explaining the control principle of the control scheme of this embodiment. The condensing pressure P value, compressor ε value, and speed N may have multiple possible values ​​due to different situations and needs, and also due to different unit selections.

[0066] Example 3

[0067] Corresponds to Figure 1 The static pressure self-regulating control method described above, this embodiment provides a static pressure self-regulating control device, such as Figure 3 The structural block diagram of the static pressure self-regulating control device shown in FIG. 1 includes:

[0068] The detection module 10 is used to detect the current ambient temperature and the operating parameters of the unit;

[0069] The judging module 20 is connected to the detecting module 10 and is used to judge whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and operating parameters;

[0070] 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 control the wind speed of the fan to adjust to the target wind speed.

[0071] The static pressure self-regulating control device provided in this embodiment can implement the static pressure self-regulating control scheme introduced above, can identify static pressure changes according to the ambient temperature and the unit's own operating parameters, and 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 outlet air reaches the preset static pressure value, and static pressure self-regulation is achieved, so that the outdoor unit can adapt to changing installation conditions, and there is no need to manually adjust the static pressure of the unit according to the installation conditions, which saves manpower. When the installation position of the unit changes, the static pressure self-regulation of the unit can be achieved in real time and in a timely manner to ensure stable operation of the unit.

[0072] This embodiment also provides an air conditioning device, which includes the static pressure self-regulating control device.

[0073] Example 4

[0074] This embodiment provides an electronic device, which is used in a static pressure self-regulation control method. The electronic device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein:

[0075] The memory stores instructions that can be executed by the one processor, and the instructions are executed by the at least one processor so that the at least one processor can: detect the current ambient temperature and the operating parameters of the unit, and determine whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and the operating parameters. If deviated, determine the target wind speed required to restore the static pressure value to the preset static pressure value. If not deviated, there is no need to adjust the static pressure of the outdoor unit outlet. Control the wind speed of the fan to adjust to the target wind speed.

[0076] Example 5

[0077] The embodiment of the present invention provides a software, which is used to execute the technical solutions described in the above embodiment and preferred implementation manner.

[0078] An embodiment of the present invention provides a non-volatile computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the static pressure self-regulating control method in any of the above method embodiments.

[0079] The above-mentioned software is stored in the above-mentioned storage medium, which includes but is not limited to: a CD, a floppy disk, a hard disk, an erasable memory, etc.

[0080] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0081] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, 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 units or modules, which can be electrical or other forms.

[0083] 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 units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0084] In addition, each functional unit in each embodiment of the present invention 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.

[0085] If the integrated 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 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, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0086] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0087] The device embodiments described above are merely illustrative, wherein 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 modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these 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 invention.

Claims

1. A static pressure self-regulating control method, It is characterized in that The method comprises: Detect the current ambient temperature and the operating parameters of the unit; Determine whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and the operating parameters; If deviated, determining a target wind speed required to restore the static pressure value to the preset static pressure value; The wind speed of the fan is controlled to be adjusted to the target wind speed.

2. The method according to claim 1, It is characterized in that Judging whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and the operating parameters includes: According to the current ambient temperature, the operating parameter data corresponding to the ambient temperature in the database are retrieved; wherein the database stores the operating parameter data corresponding to the operation of the unit maintaining the preset static pressure value at different ambient temperatures; According to the detected change of the operating parameter 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.

3. The method according to claim 2, It is characterized in that Judging whether a current static pressure value of the unit deviates from a preset static pressure value according to a change of the detected operating parameter relative to the operating parameter data includes: If the operating parameter is within the preset error range of the operating parameter data, determining that the current static pressure value of the unit does not deviate 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, determining 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, it is determined that the current static pressure value of the unit is less than the preset static pressure value.

4. The method according to claim 1, It is 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; Among them, P (total pressure) is the system pressure, Ps (static pressure) is the preset static pressure value, and V is the target wind speed.

5. The method according to claim 1, It is 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: Comparing the target wind speed with the maximum wind speed currently set for the unit; If the target wind speed is less than or equal to the maximum wind speed currently set for the unit, there is no need to adjust the maximum wind speed currently set for the unit; If the target wind speed is greater than the maximum wind speed currently set for the unit, the maximum wind speed currently set for the unit is updated to the target wind speed.

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

7. A static pressure self-regulating control device, It is characterized in that The device comprises: Detection module, used to detect the current ambient temperature and operating parameters of the unit; A judgment module, used to judge whether the current static pressure value of the unit deviates from the preset static pressure value according to the current ambient temperature and the operating parameters; 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 control the wind speed of the fan to adjust to the target wind speed.

8. An air conditioning device, It is characterized in that The air conditioning equipment includes the static pressure self-regulating control device according to claim 7.

9. A computer-readable storage medium having a computer program stored thereon, It is characterized in that When the program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

10. An electronic device, It is characterized in that include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the method according to any one of claims 1 to 6.

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